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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...ion;condition;update){
But what about:
var myarray = [];
myarray[100] = "foo";
myarray.push("bar");
Try this:
var myarray = [], i;
myarray[100] = "foo";
myarray.push("bar");
myarray[150] = "baz";
myarray.push("qux");
alert(myarray.length);
for(i in myarray){
if(myarray.hasOwnProperty(i)){ ...
Size of character ('a') in C/C++
...s in C++ required to support function overloading. See this example:
void foo(char c)
{
puts("char");
}
void foo(int i)
{
puts("int");
}
int main()
{
foo('i');
return 0;
}
Output:
char
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NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...运行一个有三个参数的程序时，它的工作原理:
./program foo bar 42 栈结构如下:
4
参数数目(argc),包含程序名称
program
程序名称(argv[0])
foo
参数1，第一个实际参数argv[1]
bar
参数2，argv[2]
...
Trim string in JavaScript?
...otype.trim = function() {
return this.replace(/^\s+|\s+$/g, "");
};
" foo bar ".trim(); // "foo bar"
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...
vs in Generics
... for example, works the opposite way. You can use a concrete IComparer<Foo> directly as an IComparer<Bar> if Bar is a subclass of Foo, because the IComparer<in T> interface is contravariant.
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How to loop through an associative array and get the key? [duplicate]
... by roughly a factor of roughly 3.5 (At least on the box I used to test)
$foo = array(
1 => "Value1",
2 => "Value2",
10 => "Value10"
);
while($bar = each($foo)){
echo $bar[0] . " => " . $bar[1];
}
I would imagine that this is due to the fact the foreach copies the enti...
How do I put a variable inside a string?
... string operator with multiple arguments, one can use a tuple as operand: 'foo %d, bar %d' % (foo, bar).
– fiedl
Aug 8 '14 at 15:38
12
...
How do I request a file but not save it with Wget? [closed]
...s assume std out when you leave off the descriptor from a redirect. So >foo is interpreted as 1>foo. When & follows a redirect, it instructs the shell to redirect the former file descriptor to the same output as the later. In this case, 2>&1 says redirect file descriptor 2 (std er...
How to use XPath contains() here?
...r>
<ul id="one">
<li>Model A</li>
<li>Foo</li>
</ul>
<ul id="two">
<li>Foo</li>
<li>Model A</li>
</ul>
</r>
XPaths
//ul[contains(li, 'Model')] selects the one ul element.
Note: The two ul e...
How to remove a field from params[:something]
...do a memo:
def parameters
@parameters ||= params.require(:root).permit(:foo, :bar)
end
Now you can do:
parameteres.delete(:bar)
parameters
=> <ActionController::Parameters {"foo" => "foo"} permitted: true>
...