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Python exit commands - why so many and when should each be used?
It seems that python supports many different commands to stop script execution. The choices I've found are: quit() , exit() , sys.exit() , os._exit()
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CSS Input Type Selectors - Possible to have an “or” or “not” syntax?
...visibility: hidden;
}
<p>If <code>:not()</code> is supported, you'll only see the checkbox.</p>
<ul>
<li>text: (<input type="text">)</li>
<li>password (<input type="password">)</li> ...
Should I use JSLint or JSHint JavaScript validation? [closed]
...gress on, it's assisting me to write better JavaScript - in particular in working with the Jquery library.
8 Answers
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How do I test a private function or a class that has private methods, fields or inner classes?
... unit test (using xUnit) a class that has internal private methods, fields or nested classes? Or a function that is made private by having internal linkage ( static in C/C++) or is in a private ( anonymous ) namespace?
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Mongoose's find method with $or condition does not work properly
...am' as ObjectId type. To avoid exception,
// the 'param' must consist of more than 12 characters.
User.find( { $or:[ {'_id':objId}, {'name':param}, {'nickname':param} ]},
function(err,docs){
if(!err) res.send(docs);
});
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What does the construct x = x || y mean?
...f you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. With the expression:
a OR b
it evaluates to true if either a or b is true...
In C#, what is the difference between public, private, protected, and having no access modifier?
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Access modifiers
From docs.microsoft.com:
public
The type or member can be accessed by any other code in the same assembly or another assembly that references it.
private
The type or member can only be accessed by code in the same class or struct.
protected
The type or member can on...
How do I use Notepad++ (or other) with msysgit?
How do I use Notepad++ (or any other editor besides vim) with msysgit?
11 Answers
11
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How do you set, clear, and toggle a single bit?
...
Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1UL << n;
That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if you want to set the nth bit.
Use 1ULL if number is wider th...
What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...location of size zero
Using pointers to objects whose lifetime has ended (for instance, stack allocated objects or deleted objects)
Dereferencing a pointer that has not yet been definitely initialized
Performing pointer arithmetic that yields a result outside the boundaries (either above or below) ...