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How can I determine if a variable is 'undefined' or 'null'?
...ional JS, it's taken for granted that type equality and the behavior of == vs === is understood. Therefore we use == and only compare to null.
Edit again
The comments suggesting the use of typeof are simply wrong. Yes, my solution above will cause a ReferenceError if the variable doesn't exist. ...
Are tuples more efficient than lists in Python?
... 0 (x)
24 LOAD_CONST 2 (2)
27 BINARY_SUBSCR
28 STORE_FAST 1 (y)
31 LOAD_CONST 0 (None)
34 RETURN_VALUE
>>> dis.dis(b)
2 0 LOAD_CONST 6 ((1, 2, 3, 4, 5...
Matplotlib scatter plot with different text at each data point
...ts with different numbers from a list.
So, for example, I want to plot y vs x and annotate with corresponding numbers from n .
...
HTML text-overflow ellipsis detection
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elem.offsetWdith VS ele.scrollWidth
This work for me!
https://jsfiddle.net/gustavojuan/210to9p1/
$(function() {
$('.endtext').each(function(index, elem) {
debugger;
if(elem.offsetWidth !== elem.scrollWidth){
$(this).css({col...
Can you do this HTML layout without using tables?
...
answered Feb 9 '09 at 0:27
Andrew VitAndrew Vit
18.2k66 gold badges7171 silver badges8383 bronze badges
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What is the difference between #include and #include “filename”?
...rm, they can be built-in.
– aib
Jan 27 '11 at 9:28
10
I've been reading this "standard headers do...
Are C++ enums signed or unsigned?
...ilator also allows typed enums msdn.microsoft.com/en-us/library/2dzy4k6e(v=vs.80).aspx
– teodozjan
Oct 8 '12 at 12:37
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When do you use POST and when do you use GET?
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Why do I need 'b' to encode a string with Base64?
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alfredocamberaalfredocambera
2,5282727 silver badges2626 bronze badges
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What is the purpose of backbone.js?
...udEdit: A Backbone.js Tutorial with Rails:
http://www.jamesyu.org/2011/01/27/cloudedit-a-backbone-js-tutorial-by-example/
http://www.jamesyu.org/2011/02/09/backbone.js-tutorial-with-rails-part-2/
p.s. There is also this wonderful Collection class that lets you deal with collections of models and ...