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Repeat each row of data.frame the number of times specified in a column
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For large data.frame more efficient is to replace row.names(df) with seq.int(1,nrow(df)) or seq_len(nrow(df)).
– Marek
May 25 '10 at 11:54
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How to create a button programmatically?
... do action with string instead of using a function (with strings it's even more unsafe than selectors!). Backwards compatibility with Obj-C probably :(
– Ixx
Dec 8 '14 at 21:26
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how to mysqldump remote db from local machine
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No more need to open ssh tunnel before. +1
– Learner
Apr 30 '18 at 14:22
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Understanding Fragment's setRetainInstance(boolean)
...d or AsyncTask, managing its operation. See my blog post on this topic for more information.
In general, I would treat it similarly to using onConfigurationChanged with an Activity... don't use it as a bandaid just because you are too lazy to implement/handle an orientation change correctly. Only u...
event.preventDefault() function not working in IE
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Matching an empty input box using CSS
... border: 1px solid red; /* Red border only if the input is empty */
}
More info and browser support: https://css-tricks.com/almanac/selectors/p/placeholder-shown/
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How to draw polygons on an HTML5 canvas?
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can you replace c2 with ctx? I think it's more common use for canvas context. great answer by the way
– gididaf
Jan 21 '18 at 8:00
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HTML5 Audio stop function
...ou stop an audio you could do one of two things. The second I think is the more appropriate one and I'm not sure why the "gods of javascript standards" have not made this standard.
First method: create a function and pass the audio
function stopAudio(audio) {
audio.pause();
audio.currentTi...
How to split the name string in mysql?
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