在Powershell中使用方程时,有没有办法调用函数。
我正在尝试类似以下的内容,但最后一行会返回错误You must provide a value expression...
。
function quote($str) {
return """" + $str + """";
};
$a= "abc: " + quote('hi'); # <-- Doesn't Work
我意识到我可以将引用分配给一个中间变量然后进行连接($q=quote('hi'); $a="abc: " + q$
)但是我希望有一个更简单的语法。
答案 0 :(得分:2)
这就是你的意思:
function quote($str) {
return """" + $str + """";
};
$a= "abc: " + $(quote('hi'));
# edit: as per Joey's comment, this will also work:
$a= "abc: " + (quote('hi'));
修改
使用PowerShell语法重写:
# Function name is verb-noun, from approved verbs
# https://msdn.microsoft.com/en-us/library/ms714428(v=vs.85).aspx
Function Add-Quote{
# parameters this function takes
param([string]$str)
# No need for return and semi colon.
# I tend to use return as it makes my code reading easier
"""" + $str + """"
}
$a = "abc: " + (Add-Quote -str 'hi')
答案 1 :(得分:1)
您可以使用格式运算符View#onAttachedToWindow
来插入字符串。
ViewGroup parent = (ViewGroup) getParent();
View target;
while ((target = parent.findViewById(id)) == null) {
parent = (ViewGroup) parent.getParent();
}