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jQuery Multiple ID selectors
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rsplakrsplak
10.9k22 gold badges2929 silver badges3030 bronze badges
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What does addChildViewController actually do?
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I was wondering about this question too. I watched Session 102 of the WWDC 2011 videos and Mr. View Controller, Bruce D. Nilo, said this:
viewWillAppear:, viewDidAppear:, etc have nothing to do with addChildViewController:. All that addChildViewController: does is to say "This vie...
What is the difference between an annotated and unannotated tag?
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270
TL;DR
The difference between the commands is that one provides you with a tag message while the...
Embedding SVG into ReactJS
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Update 2016-05-27
As of React v15, support for SVG in React is (close to?) 100% parity with current browser support for SVG (source). You just need to apply some syntax transformations to make it JSX compatible, like you already hav...
Check if an apt-get package is installed and then install it if it's not on Linux
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edited Aug 19 '09 at 6:39
answered Aug 19 '09 at 6:27
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What's the difference between '$(this)' and 'this'?
...f you want jQuery's help to do DOM things just keep this in mind.
$(this)[0] === this
Basically every time you get a set of elements back jQuery turns it into a jQuery object. If you know you only have one result, it's going to be in the first element.
$("#myDiv")[0] === document.getElementById(...
Chrome Developer Tools: How to find out what is overriding a CSS rule?
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answered Dec 13 '12 at 20:03
josh3736josh3736
120k2323 gold badges198198 silver badges245245 bronze badges
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Pandas conditional creation of a series/dataframe column
...here(df['Set']=='Z', 'green', 'red')
print(df)
yields
Set Type color
0 Z A green
1 Z B green
2 X B red
3 Y C red
If you have more than two conditions then use np.select. For example, if you want color to be
yellow when (df['Set'] == 'Z') & (df['Type'] == ...
What is android:weightSum in android, and how does it work?
...tent"
android:layout_weight="1"
android:layout_width="0dp"/>
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weightSum is useful for having the layout rendered correctly for any device, which will not happen if you set width and height directly.
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Booleans, conditional operators and autoboxing
...onditional expression is the result of applying capture conversion (§5.1.10) to lub(T1, T2) (§15.12.2.7).
S1 == <special null type> (see §4.1)
S2 == boolean
T1 == box(S1) == <special null type> (see last item in list of boxing conversions in §5.1.7)
T2 == box(S2) == `Boolean
lub(...