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When and why to 'return false' in JavaScript?
When and why to return false in JavaScript?
12 Answers
12
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Calling a JavaScript function named in a variable [duplicate]
...Script function. This function exists on the page by having been loaded in and placed using $.ajax, etc.
4 Answers
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Why are Oracle table/column/index names limited to 30 characters?
I can understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
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Is it possible to implement a Python for range loop without an iterator variable?
...range(10): pass
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>>> _
9
>>> 1+2
3
>>> _
9
And according to Python grammar, it is an acceptable variable name:
identifier ::= (letter|"_") (letter | digit | "_")*
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What is the difference between NULL, '\0' and 0?
...e appear to be differences between various values of zero -- NULL , NUL and 0 .
11 Answers
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Simple Getter/Setter comments
What convention do you use to comment getters and setters? This is something I've wondered for quite some time, for instance:
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Linq style “For Each” [duplicate]
...h involves iterating through the original collection twice. I'd prefer a standard foreach loop any day: less typing, more readable and better performance: foreach (var x in someValues) list.Add(x + 1);
– LukeH
Oct 2 '09 at 13:35
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How to combine class and ID in CSS selector?
...* Won't work in IE6, but valid */
div.firstClass.secondClass /* ditto */
and, per your example:
div#content.sectionA
Edit, 4 years later: Since this is super old and people keep finding it: don't use the tagNames in your selectors. #content.myClass is faster than div#content.myClass because the...
What is the Java ?: operator called and what does it do?
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Yes, it is a shorthand form of
int count;
if (isHere)
count = getHereCount(index);
else
count = getAwayCount(index);
It's called the conditional operator. Many people (erroneously) call it the ternary operator, because it's the only te...
Threading in a PyQt application: Use Qt threads or Python threads?
...humb might be to use QThreads if you're going to interact somehow with Qt, and use Python threads otherwise.
And some earlier comment on this subject from PyQt's author: "they are both wrappers around the same native thread implementations". And both implementations use GIL in the same way.
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