Question

假设我的代码更少：

@desktop-min-width:         1024px;
@phone-max-width:           768px;

@desktop:          ~"only screen and (min-width: @{desktop-min-width})";
@tablet:           ~"only screen and (min-width: @{phone-max-width}) and (max-width: @{desktop-min-width})";
@phone:            ~"only screen and (max-width: @{phone-max-width})";

.hola {

  @phone {
    height: 100vh;
    top:    10px;
  }

  @tablet {
    height: 30vh;
    top:    30%;
  }

  @desktop {
    height: 30vh;
    top:    30%;
  }

}

// ...more styles...

我有办法组合@tablet和@desktop并减少重复吗？我正在想像这样的事情：

@tablet or @desktop {
  height: 30vh;
  top:    30%;
}

Answer 1

只需使用逗号即可完成您想要的操作：

    , , , 17:14:03 UTC - mysqld got exception 0xc0000005 ;
, , , This could be because you hit a bug. It is also possible that this binary
, , , or one of the libraries it was linked against is corrupt, improperly built,
, , , or misconfigured. This error can also be caused by malfunctioning hardware.
, , , Attempting to collect some information that could help diagnose the problem.
, , , As this is a crash and something is definitely wrong, the information
, , , collection process might fail.
, , , key_buffer_size=8388608
, , , read_buffer_size=8192
, , , max_used_connections=4
, , , max_threads=151
, , , thread_count=5
, , , connection_count=4
, , , It is possible that mysqld could use up to
, , , key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 49570 K  bytes of memory
, , , Hope that's ok; if not, decrease some variables in the equation.
, , , Thread pointer: 0x22398e95dc0
, , , Attempting backtrace. You can use the following information to find out
, , , where mysqld died. If you see no messages after this, something went
, , , terribly wrong...
, , , 7ff7e4ff764d    mysqld.exe!?this_item@Item_splocal@@UEAAPEAVItem@@XZ()
, , , 7ff7e4ffa256    mysqld.exe!?val_int@Item_sp_variable@@UEAA_JXZ()
, , , 7ff7e50cbcb5    mysqld.exe!?set_limit@SELECT_LEX_UNIT@@QEAA_NPEAVTHD@@PEAVSELECT_LEX@@@Z()
, , , 7ff7e534e258    mysqld.exe!?execute@Sql_cmd_create_table@@UEAA_NPEAVTHD@@@Z()
, , , 7ff7e50f2d38    mysqld.exe!?mysql_execute_command@@YAHPEAVTHD@@_N@Z()
, , , 7ff7e52e7e3a    mysqld.exe!?exec_core@sp_instr_stmt@@UEAA_NPEAVTHD@@PEAI@Z()
, , , 7ff7e52e9e82    mysqld.exe!?reset_lex_and_exec_core@sp_lex_instr@@AEAA_NPEAVTHD@@PEAI_N@Z()
, , , 7ff7e52ea619    mysqld.exe!?validate_lex_and_execute_core@sp_lex_instr@@QEAA_NPEAVTHD@@PEAI_N@Z()
, , , 7ff7e52e82aa    mysqld.exe!?execute@sp_instr_stmt@@UEAA_NPEAVTHD@@PEAI@Z()
, , , 7ff7e50d0193    mysqld.exe!?execute@sp_head@@AEAA_NPEAVTHD@@_N@Z()
, , , 7ff7e50d109b    mysqld.exe!?execute_procedure@sp_head@@QEAA_NPEAVTHD@@PEAV?$List@VItem@@@@@Z()
, , , 7ff7e5376bee    mysqld.exe!?execute_inner@Sql_cmd_call@@MEAA_NPEAVTHD@@@Z()
, , , 7ff7e524c706    mysqld.exe!?execute@Sql_cmd_dml@@UEAA_NPEAVTHD@@@Z()
, , , 7ff7e50f2d38    mysqld.exe!?mysql_execute_command@@YAHPEAVTHD@@_N@Z()
, , , 7ff7e50f3816    mysqld.exe!?mysql_parse@@YAXPEAVTHD@@PEAVParser_state@@@Z()
, , , 7ff7e50ed6b8    mysqld.exe!?dispatch_command@@YA_NPEAVTHD@@PEBTCOM_DATA@@W4enum_server_command@@@Z()
, , , 7ff7e50ee5e5    mysqld.exe!?do_command@@YA_NPEAVTHD@@@Z()
, , , 7ff7e4f847f8    mysqld.exe!?pop_front@?$list@PEAVChannel_info@@V?$allocator@PEAVChannel_info@@@std@@@std@@QEAAXXZ()
, , , 7ff7e6093e87    mysqld.exe!??1?$lock_guard@Vmutex@std@@@std@@QEAA@XZ()
, , , 7ff7e5cab1dc    mysqld.exe!?my_thread_join@@YAHPEAUmy_thread_handle@@PEAPEAX@Z()
, , , 7fff7aaec4ce    ucrtbase.dll!_o_ceil()
, , , 7fff7d453034    KERNEL32.DLL!BaseThreadInitThunk()
, , , 7fff7de11461    ntdll.dll!RtlUserThreadStart()
, , , Trying to get some variables.
, , , Some pointers may be invalid and cause the dump to abort.
, , , Query (223994b4e98): CREATE TEMPORARY TABLE
, , , IF NOT EXISTS topic_ids
, , , SELECT topic_id
, , , FROM topics
, , , WHERE edit_time > v_edit_time
, , , LIMIT v_scraped_topics
, , , OFFSET v_offset
, , , Connection ID (thread ID): 10
, , , Status: NOT_KILLED
, , , The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
, , , information that should help you find out what is causing the crash.

如何将两个较少的@Media查询与“或”条件组合？

1 个答案: