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What is the rationale behind having companion objects in Sm>ca m>la?
Is there a m>ca m>se where a companion object (singleton) for a class is needed? Why would I want to create a class, say Foo and also create a companion object for it?
...
m>Ca m>n HTML be embedded inside PHP “if” statement?
...uld like to embed HTML inside a PHP if statement, if it's even possible, bem>ca m>use I'm thinking the HTML would appear before the PHP if statement is executed.
...
pip issue installing almost any library
...thon.org/simple/pytest-cov/: There was a problem confirming the ssl certifim>ca m>te: [SSL: CERTIFIm>CA m>TE_VERIFY_FAILED] certifim>ca m>te verify failed (_ssl.c:600) - skipping
Could not find a version that satisfies the requirement pytest-cov (from versions: )
No matching distribution found for pytest-cov
U...
Python function global variables?
...them, is the following a valid way to go about using them? (I am trying to m>ca m>ll the global copy of a variable created in a separate function.)
...
逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...出switch的结构了，问题就迎刃而解了。可以看到1中最后m>ca m>ll 08048878<ssm>ca m>nf@plt>，猜测ssm>ca m>nf可能是C语言的内部函数，于是查到其定义为：int ssm>ca m>nf(const char *str, const char *format,…)，给出一个使用实例：ssm>ca m>nf(“s 1”, “%s %d”, str, &a)，函...
Assigning code to a variable
...s:
var ButtonClicked = new Action(() =&gt; MessageBox.Show("hi"));
Then m>ca m>ll it:
ButtonClicked();
For completeness (in regards to the various comments)...
As Erik stated, you could execute multiple lines of code:
var ButtonClicked = new Action(() =&gt;
{
MessageBox.Show("hi");
Messa...
How to use index in select statement?
...ort: you don't have to specify index in query. It is used (or not) automagim>ca m>lly. You m>ca m>n force it, however. More details (when and why do this) in other posts below.
– Rast
Apr 28 '14 at 11:05
...
How to delete a cookie?
...="+domain:"") +
";expires=Thu, 01 Jan 1970 00:00:01 GMT";
}
}
You m>ca m>n define get_cookie() like this:
function get_cookie(name){
return document.cookie.split(';').some(c =&gt; {
return c.trim().startsWith(name + '=');
});
}
...
What are copy elision and return value optimization?
...
Introduction
For a technim>ca m>l overview - skip to this answer.
For common m>ca m>ses where copy elision occurs - skip to this answer.
Copy elision is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain si...
What is the most robust way to force a UIView to redraw?
...rouble with that, you're likely running into one of these issues:
You're m>ca m>lling it before you actually have the data, or your -drawRect: is over-m>ca m>ching something.
You're expecting the view to draw at the moment you m>ca m>ll this method. There is intentionally no way to demand "draw right now this ve...