我很好奇这样做的正确方法。假设我想通过方法发出成功或失败的信号。这是否可以接受，如果在成功的情况下除了成功之外没有我想说的话？
def fn(): Either[Throwable, Unit]
从这个方法返回Right（）的正确方法是什么？显然只是返回Right（）给出了一个弃用警告（通过插入（）修改参数列表已被弃用。）
我也可以做Option [Throwable]，但这并不符合我如何阅读Option的精神。或者可能返回scala.util.Try的结果并评估成功/失败？
- 在弃用警告上，仅供参考。
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_101).
Type in expressions for evaluation. Or try :help.
scala> def fn:Either[Throwable, Unit] = { Right() }
<console>:11: warning: Adaptation of argument list by inserting () has been deprecated: this is unlikely to be what you want.
signature: Right.apply[A, B](b: B): scala.util.Right[A,B]
given arguments: <none>
after adaptation: Right((): Unit)
def fn:Either[Throwable, Unit] = { Right() }
^
fn: Either[Throwable,Unit]
答案 0 :(得分：5)
您可以使用Unit作为类型并返回()。
def fn(): Either[Throwable, Unit] = Right(())
答案 1 :(得分：1)
我想说这取决于您正在寻找的API类型。
/bin/bash /home/hamid/xhprof-0.9.2/extension/libtool --mode=compile cc -I. -I/home/hamid/xhprof-0.9.2/extension -DPHP_ATOM_INC -I/home/hamid/xhprof-0.9.2/extension/include -I/home/hamid/xhprof-0.9.2/extension/main -I/home/hamid/xhprof-0.9.2/extension -I/usr/include/php/20151012 -I/usr/include/php/20151012/main -I/usr/include/php/20151012/TSRM -I/usr/include/php/20151012/Zend -I/usr/include/php/20151012/ext -I/usr/include/php/20151012/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /home/hamid/xhprof-0.9.2/extension/xhprof.c -o xhprof.lo
libtool: compile: cc -I. -I/home/hamid/xhprof-0.9.2/extension -DPHP_ATOM_INC -I/home/hamid/xhprof-0.9.2/extension/include -I/home/hamid/xhprof-0.9.2/extension/main -I/home/hamid/xhprof-0.9.2/extension -I/usr/include/php/20151012 -I/usr/include/php/20151012/main -I/usr/include/php/20151012/TSRM -I/usr/include/php/20151012/Zend -I/usr/include/php/20151012/ext -I/usr/include/php/20151012/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /home/hamid/xhprof-0.9.2/extension/xhprof.c -fPIC -DPIC -o .libs/xhprof.o
In file included from /usr/include/php/20151012/main/php.h:34:0,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/main/php_config.h:2458:0: warning: "_GNU_SOURCE" redefined
#define _GNU_SOURCE 1
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:24:0: note: this is the location of the previous definition
# define _GNU_SOURCE
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:236:1: warning: ‘visibility’ attribute ignored [-Wattributes]
static ZEND_DLEXPORT void (*_zend_execute) (zend_op_array *ops TSRMLS_DC);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:240:28: warning: ‘visibility’ attribute ignored [-Wattributes]
int ret TSRMLS_DC);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_init_profiler_state’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:625:5: warning: implicit declaration of function ‘FREE_ZVAL’ [-Wimplicit-function-declaration]
FREE_ZVAL(hp_globals.stats_count);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:627:3: warning: implicit declaration of function ‘MAKE_STD_ZVAL’ [-Wimplicit-function-declaration]
MAKE_STD_ZVAL(hp_globals.stats_count);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:635:5: warning: implicit declaration of function ‘restore_cpu_affinity’ [-Wimplicit-function-declaration]
restore_cpu_affinity(&hp_globals.prev_mask);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:639:3: warning: implicit declaration of function ‘bind_to_cpu’ [-Wimplicit-function-declaration]
bind_to_cpu((int) (rand() % hp_globals.cpu_num));
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_get_function_name’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:895:21: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘function_state’
curr_func = data->function_state.function;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:898:10: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
func = curr_func->common.function_name;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:909:13: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
cls = curr_func->common.scope->name;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:910:22: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘object’
} else if (data->object) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:31:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:911:28: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘object’
cls = Z_OBJCE(*data->object)->name;
^
/usr/include/php/20151012/Zend/zend_types.h:530:26: note: in definition of macro ‘Z_OBJ’
#define Z_OBJ(zval) (zval).value.obj
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:911:15: note: in expansion of macro ‘Z_OBJCE’
cls = Z_OBJCE(*data->object)->name;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:930:34: error: ‘znode_op {aka const union _znode_op}’ has no member named ‘u’
curr_op = data->opline->op2.u.constant.value.lval;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:963:41: warning: passing argument 1 of ‘hp_get_base_filename’ from incompatible pointer type [-Wincompatible-pointer-types]
filename = hp_get_base_filename((curr_func->op_array).filename);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:856:14: note: expected ‘char *’ but argument is of type ‘zend_string * {aka struct _zend_string *}’
static char *hp_get_base_filename(char *filename) {
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_inc_count’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1043:26: warning: passing argument 2 of ‘zend_hash_find’ from incompatible pointer type [-Wincompatible-pointer-types]
if (zend_hash_find(ht, name, strlen(name) + 1, &data) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: expected ‘zend_string * {aka struct _zend_string *}’ but argument is of type ‘char *’
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1043:7: error: too many arguments to function ‘zend_hash_find’
if (zend_hash_find(ht, name, strlen(name) + 1, &data) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: declared here
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
In file included from /usr/include/php/20151012/Zend/zend.h:31:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1044:30: warning: implicit declaration of function ‘Z_LVAL_PP’ [-Wimplicit-function-declaration]
ZVAL_LONG(*(zval**)data, Z_LVAL_PP((zval**)data) + count);
^
/usr/include/php/20151012/Zend/zend_types.h:610:19: note: in definition of macro ‘ZVAL_LONG’
Z_LVAL_P(__z) = l; \
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_hash_lookup’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1067:26: warning: passing argument 2 of ‘zend_hash_find’ from incompatible pointer type [-Wincompatible-pointer-types]
if (zend_hash_find(ht, symbol, strlen(symbol) + 1, &data) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: expected ‘zend_string * {aka struct _zend_string *}’ but argument is of type ‘char *’
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1067:7: error: too many arguments to function ‘zend_hash_find’
if (zend_hash_find(ht, symbol, strlen(symbol) + 1, &data) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: declared here
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_sample_stack’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1131:21: error: macro "add_assoc_string" passed 4 arguments, but takes just 3
1);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1128:3: error: ‘add_assoc_string’ undeclared (first use in this function)
add_assoc_string(hp_globals.stats_count,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1128:3: note: each undeclared identifier is reported only once for each function it appears in
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_execute_internal’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1639:43: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘op_array’
func = hp_get_function_name(current_data->op_array TSRMLS_CC);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:21: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1647:23: note: in expansion of macro ‘EX’
zend_op *opline = EX(opline);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:36: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘function_state’
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1648:33: note: in expansion of macro ‘EX’
((zend_internal_function *) EX(function_state).function)->handler(
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1624:25: error: ‘temp_variable’ undeclared (first use in this function)
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1650:24: note: in expansion of macro ‘EX_T’
EX_T(opline->result.u.var).var.ptr,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1624:40: error: expected expression before ‘)’ token
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1650:24: note: in expansion of macro ‘EX_T’
EX_T(opline->result.u.var).var.ptr,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:36: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘Ts’
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1624:51: note: in expansion of macro ‘EX’
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1650:24: note: in expansion of macro ‘EX_T’
EX_T(opline->result.u.var).var.ptr,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:36: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘function_state’
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1651:24: note: in expansion of macro ‘EX’
EX(function_state).function->common.return_reference ?
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1624:40: error: expected expression before ‘)’ token
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1652:25: note: in expansion of macro ‘EX_T’
&EX_T(opline->result.u.var).var.ptr:NULL,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:36: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘Ts’
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1624:51: note: in expansion of macro ‘EX’
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1652:25: note: in expansion of macro ‘EX_T’
&EX_T(opline->result.u.var).var.ptr:NULL,
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1623:36: error: ‘zend_execute_data {aka struct _zend_execute_data}’ has no member named ‘object’
#define EX(element) ((execute_data)->element)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1653:24: note: in expansion of macro ‘EX’
EX(object), ret TSRMLS_CC);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_compile_file’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1683:35: warning: passing argument 1 of ‘hp_get_base_filename’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
filename = hp_get_base_filename(file_handle->filename);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:856:14: note: expected ‘char *’ but argument is of type ‘const char *’
static char *hp_get_base_filename(char *filename) {
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_begin’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1722:19: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
_zend_execute = zend_execute;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1723:19: error: lvalue required as left operand of assignment
zend_execute = hp_execute;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1726:28: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
_zend_execute_internal = zend_execute_internal;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1731:29: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
zend_execute_internal = hp_execute_internal;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_stop’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1796:25: error: lvalue required as left operand of assignment
zend_execute = _zend_execute;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1797:25: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
zend_execute_internal = _zend_execute_internal;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_zval_at_key’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1823:13: error: ‘zval {aka struct _zval_struct}’ has no member named ‘type’
if (values->type == IS_ARRAY) {
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1829:28: warning: passing argument 2 of ‘zend_hash_find’ from incompatible pointer type [-Wincompatible-pointer-types]
if (zend_hash_find(ht, key, len, (void**)&value) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: expected ‘zend_string * {aka struct _zend_string *}’ but argument is of type ‘char *’
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1829:9: error: too many arguments to function ‘zend_hash_find’
if (zend_hash_find(ht, key, len, (void**)&value) == SUCCESS) {
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:154:30: note: declared here
ZEND_API zval* ZEND_FASTCALL zend_hash_find(const HashTable *ht, zend_string *key);
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: In function ‘hp_strings_in_zval’:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1853:13: error: ‘zval {aka struct _zval_struct}’ has no member named ‘type’
if (values->type == IS_ARRAY) {
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1873:47: warning: passing argument 2 of ‘zend_hash_get_current_key_ex’ from incompatible pointer type [-Wincompatible-pointer-types]
type = zend_hash_get_current_key_ex(ht, &str, &len, &idx, 0, NULL);
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:168:30: note: expected ‘zend_string ** {aka struct _zend_string **}’ but argument is of type ‘char **’
ZEND_API int ZEND_FASTCALL zend_hash_get_current_key_ex(const HashTable *ht, zend_string **str_index, zend_ulong *num_index, HashPosi
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1873:53: warning: passing argument 3 of ‘zend_hash_get_current_key_ex’ from incompatible pointer type [-Wincompatible-pointer-types]
type = zend_hash_get_current_key_ex(ht, &str, &len, &idx, 0, NULL);
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:168:30: note: expected ‘zend_ulong * {aka long unsigned int *}’ but argument is of type ‘uint * {aka unsigned int *}’
ZEND_API int ZEND_FASTCALL zend_hash_get_current_key_ex(const HashTable *ht, zend_string **str_index, zend_ulong *num_index, HashPosi
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1873:59: warning: passing argument 4 of ‘zend_hash_get_current_key_ex’ from incompatible pointer type [-Wincompatible-pointer-types]
type = zend_hash_get_current_key_ex(ht, &str, &len, &idx, 0, NULL);
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:168:30: note: expected ‘HashPosition * {aka unsigned int *}’ but argument is of type ‘ulong * {aka long unsigned int *}’
ZEND_API int ZEND_FASTCALL zend_hash_get_current_key_ex(const HashTable *ht, zend_string **str_index, zend_ulong *num_index, HashPosi
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1873:14: error: too many arguments to function ‘zend_hash_get_current_key_ex’
type = zend_hash_get_current_key_ex(ht, &str, &len, &idx, 0, NULL);
^
In file included from /usr/include/php/20151012/Zend/zend.h:36:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_hash.h:168:30: note: declared here
ZEND_API int ZEND_FASTCALL zend_hash_get_current_key_ex(const HashTable *ht, zend_string **str_index, zend_ulong *num_index, HashPosi
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1876:58: error: macro "zend_hash_get_current_data" passed 2 arguments, but takes just 1
if ((zend_hash_get_current_data(ht, (void**)&data) == SUCCESS) &&
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1876:14: error: ‘zend_hash_get_current_data’ undeclared (first use in this function)
if ((zend_hash_get_current_data(ht, (void**)&data) == SUCCESS) &&
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1877:13: warning: implicit declaration of function ‘Z_TYPE_PP’ [-Wimplicit-function-declaration]
Z_TYPE_PP(data) == IS_STRING &&
^
In file included from /usr/include/string.h:630:0,
from /usr/include/php/20151012/main/php_config.h:2517,
from /usr/include/php/20151012/main/php.h:34,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: implicit declaration of function ‘Z_STRVAL_PP’ [-Wimplicit-function-declaration]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strlen’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strcmp’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strlen’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strcmp’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strcmp’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: warning: passing argument 1 of ‘__builtin_strcmp’ makes pointer from integer without a cast [-Wint-conversion]
strcmp(Z_STRVAL_PP(data), ROOT_SYMBOL)) { /* do not ignore "main" */
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1878:20: note: expected ‘const char *’ but argument is of type ‘int’
In file included from /usr/include/php/20151012/Zend/zend.h:33:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_alloc.h:172:35: warning: passing argument 1 of ‘_estrdup’ makes pointer from integer without a cast [-Wint-conversion]
#define estrdup(s) _estrdup((s) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1879:24: note: in expansion of macro ‘estrdup’
result[ix] = estrdup(Z_STRVAL_PP(data));
^
In file included from /usr/include/php/20151012/Zend/zend.h:33:0,
from /usr/include/php/20151012/main/php.h:36,
from /home/hamid/xhprof-0.9.2/extension/xhprof.c:27:
/usr/include/php/20151012/Zend/zend_alloc.h:84:31: note: expected ‘const char *’ but argument is of type ‘int’
ZEND_API char* ZEND_FASTCALL _estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC;
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c:1884:19: error: ‘zval {aka struct _zval_struct}’ has no member named ‘type’
} else if(values->type == IS_STRING) {
^
/home/hamid/xhprof-0.9.2/extension/xhprof.c: At top level:
/home/hamid/xhprof-0.9.2/extension/xhprof.c:789:10: warning: ‘hp_globals’ is static but used in inline function ‘hp_ignore_entry’ which is not static
return hp_globals.ignored_function_names != NULL &&
^
Makefile:193: recipe for target 'xhprof.lo' failed
make: *** [xhprof.lo] Error 1
对我来说听起来非常不恰当。如果您期望该功能的主要结果是副作用，那么在使用def fn(): Either[Throwable, Unit]时似乎没有用处。这是因为它是monadic操作链的终端操作吗？
这些日子变得不那么受欢迎，也不那么惯用了，但我可能会选择Either来处理案件。另一个惯用的选择是，而不是在Try[A]中改变异常，以创建所有错误类型的密封特征层次结构，并从有效函数而不是原始Either实例返回那些。
我在REPL调用Throwable或Right()时没有看到您注意到的错误，您使用的是哪个版本的Right( () )？