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Replace a value in a data frame based on a conditional (`if`) statement
In the R data frame coded for below, I would like to replace all of the times that B
appears with b .
8 Answers
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What's the difference between '$(this)' and 'this'?
... 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("myDiv");
And so ...
Pros and cons of Java rules engines [closed]
... good. Could you please tell me where to use drool and where to Jess? Basically , I'm expecting the answer more related diff. b/w drool and Jess.
– Tony
Jul 1 '10 at 17:58
7
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Display Animated GIF
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Android actually can decode and display animated GIFs, using android.graphics.Movie class.
This is not too much documented, but is in SDK Reference. Moreover, it is used in Samples in ApiDemos in BitmapDecode example with some animated ...
Is it possible to set UIView border properties from interface builder?
...s, etc...) directly from interface builder or I can only do it programmatically?
10 Answers
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What does “while True” mean in Python?
...e loop body indefinitely. It's an idiom that you'll just get used to eventually! Most languages you're likely to encounter have equivalent idioms.
Note that most languages usually have some mechanism for breaking out of the loop early. In the case of Python it's the break statement in the cmd == 'e...
Run a task every x-minutes with Windows Task Scheduler [closed]
...uler to run a particular .exe every 10 minutes or so, but the options only allow for once a day execution.
8 Answers
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How to get .app file of a xcode application
... friend to use that application. From where do I get this file? How to install this .app file in his Applications folder using an installer package?
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How to turn off the Eclipse code formatter for certain sections of Java code?
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Eclipse 3.6 allows you to turn off formatting by placing a special comment, like
// @formatter:off
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// @formatter:on
The on/off features have to be turned "on" in Eclipse preferences: Java > Code Style > Formatter. Click on ...
css 'pointer-events' property alternative for IE
...mp; there's always a lesson in haste makes waste. Besides, Mozilla said it all "Warning: The use of pointer-events in CSS for non-SVG elements is experimental. The feature used to be part of the CSS3 UI draft specification but, due to many open issues, has been postponed to CSS4."
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