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How to get year/month/day from a date object?
alert(dateObj) gives Wed Dec 30 2009 00:00:00 GMT+0800
16 Answers
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How do I calculate square root in Python?
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10 Answers
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Show an image preview before upload
... // read the image file as a data URL.
reader.readAsDataURL(this.files[0]);
};
Here's a good article on using the File APIs in JavaScript.
The code snippet in the HTML example below filters out images from the user's selection and renders selected files into multiple thumbnail previews:
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Get all child views inside LinearLayout at once
...earLayout ll = …
final int childCount = ll.getChildCount();
for (int i = 0; i < childCount; i++) {
View v = ll.getChildAt(i);
// Do something with v.
// …
}
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
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309
I am also looking for an answer to this question, (to clarify, I want to be able to draw an ima...
Algorithm to return all combinations of k elements from n
...me across is of course memory and pretty quickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous...
Chrome: timeouts/interval suspended in background tabs?
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edited Apr 4 '18 at 20:59
GG.
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answered Ma...
Programmatically obtain the Android API level of a device?
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107
You can obtain API level programatically by the system constant (Build.VERSION.SDK_INT). For ex...
How to convert boost path type to string?
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answered Nov 14 '10 at 19:51
icecrimeicecrime
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How to get the unix timestamp in C#
...estamp in C# by using DateTime.UtcNow and subtracting the epoch time of 1970-01-01.
e.g.
Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
DateTime.UtcNow can be replaced with any DateTime object that you would like to get the unix timestamp for.
Th...