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Convert JavaScript String to be all lower case?
...ivalent to:
var lower = new Date().toString().toLowerCase();
The second form is generally preferred for its simplicity and readability. On earlier versions of IE, the first had the benefit that it could work with a null value. The result of applying toLowerCase or toLocaleLowerCase on null would ...
The difference between sys.stdout.write and print?
...
print is just a thin wrapper that formats the inputs (modifiable, but by default with a space between args and newline at the end) and calls the write function of a given object. By default this object is sys.stdout, but you can pass a file using the "chevron...
Why do we usually use || over |? What is the difference?
...
If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone.
It's a matter of if you want to short-circuit the evaluation or not -- most of the time you want to....
What does asterisk * mean in Python? [duplicate]
...
See Function Definitions in the Language Reference.
If the form *identifier is
present, it is initialized to a tuple
receiving any excess positional
parameters, defaulting to the empty
tuple. If the form **identifier is
present, it is initialized to a new
dictionary recei...
How do you use the ? : (conditional) operator in JavaScript?
...ed Aug 8 '19 at 12:57
CertainPerformance
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answered Jun 7 '11 at 2:13
...
List of ANSI color escape sequences
...looking for are the Select Graphic Rendition subset. All of these have the form
\033[XXXm
where XXX is a series of semicolon-separated parameters.
To say, make text red, bold, and underlined (we'll discuss many other options below) in C you might write:
printf("\033[31;1;4mHello\033[0m");
In C++ y...
Finding a branch point with Git?
...wn when comparing identical branches, and coming up with an alternate diff form which removes the sed form from the mix, and makes this "safer" (i.e. it returns a result (namely, the most recent commit) even when you compare master to master):
As a .git-config line:
[alias]
oldest-ancestor = !...
Why doesn't JUnit provide assertNotEquals methods?
...read it the question was not about historical interest, but about a way to formulate the assertion "these two objects are not equal" in a JUnit test. I answered that. Considering the "why is/was there no assertNotEqual" I'd say that's because it's a specialized assert that's not needed as often as a...
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...ignment Operators. An extract:
A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once.
An example cited from §15.26.2
[...] the following code is correct:
short x = 3;
x += 4.6...
Why are only a few video games written in Java? [closed]
...ory, it makes a lot of sense: you get a productivity boost and a cross-platform application almost for free, among other things, such as the vast amount of Java libraries, and built-in garbage collection (although I admit I'm not sure if the latter is a good thing). So why is it rarely used? I can o...