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How do I find out if first character of a string is a number?
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Character.isDigit(string.charAt(0))
Note that this will allow any Unicode digit, not just 0-9. You might prefer:
char c = string.charAt(0);
isDigit = (c >= '0' && c <= '9');
Or the slower regex solutions:
s.substring(0, 1).matches("\\d")
// or the equivalent
s.su...
fetch from origin with deleted remote branches?
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thank you very much. I manually deleted those branches before.
– Maksim Dmitriev
Mar 9 '13 at 13:16
4
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SVG fill color transparency / alpha?
...or example:
<rect ... fill="#044B94" fill-opacity="0.4"/>
Additionally you have the following:
stroke-opacity attribute for the stroke
opacity for the entire object
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Can I 'git commit' a file and ignore its content changes?
... local configuration. That configuration information is stored in a file called devtargets.rb which is used in our rake build tasks. I don't want developers to clobber each other's devtargets file, though.
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How to iterate over the keys and values in an object in CoffeeScript?
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Actually, all objects in JS are associative arrays (sans consistent key ordering). So the code jcmoney gave should work, though there's no reason to use [] instead of {} in that case.
– Trevor Burnham
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Run cURL commands from Windows console
...tps://www.example.com/mypage.php?action=hello. In the mypage.php script, $_GET['action'] is empty
– Stephen R
Jun 26 '19 at 0:31
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How to make a phone call using intent in Android?
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You can use Intent.ACTION_DIAL instead of Intent.ACTION_CALL. This shows the dialer with the number already entered, but allows the user to decide whether to actually make the call or not. ACTION_DIAL does not require the CALL_PHONE permission.
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Specify width in *characters*
... than the width. Same holds for ex, which is the height of an x. More generally speaking, these are the heights of uppercase and lowercase letters.
Width is a totally different issue....
Change your example above to
<div>
<span>1</span> 3 5 7 9 1 3 5 7 9 1
</div>
an...
Drag and drop files into WPF
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This is basically what you want to do.
private void ImagePanel_Drop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
// Note that you can have more than one file.
string[] files = (string[...
How to escape apostrophe (') in MySql?
...equences looks pretty similar.)
I think the Postgres note on the backslash_quote (string) parameter is informative:
This controls whether a quote mark can be represented by \' in a string literal. The preferred, SQL-standard way to represent a quote mark is by doubling it ('') but PostgreSQL ha...