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Regex to check whether a string contains only numbers [duplicate]
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This one will allow also for signed and float numbers or empty string:
var reg = /^-?\d*\.?\d*$/
If you don't want allow to empty string use this one:
var reg = /^-?\d+\.?\d*$/
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What is sr-only in Bootstrap 3?
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I don't think it's confusing at all, it clearly says the class is used for information to be hidden, that is only meant to be seen by screen readers.
– Lee
Sep 8 '16 at 14:24
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Trigger a button click with JavaScript on the Enter key in a text box
... This worked for me due to fact that the inline method, instead of calling function with similar code in it, allows you to return false on the call and avoid postback. In my case the "click" method invokes a __doPostback async call and without the "return false;" would just reload the page.
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Named colors in matplotlib
... have been moved under the 'xkcd:' prefix since I posted this answer originally.
I really didn't change much from the matplotlib example, but here is the code for completeness.
import matplotlib.pyplot as plt
from matplotlib import colors as mcolors
colors = dict(mcolors.BASE_COLORS, **mcolors...
Adding values to a C# array
Probably a really simple one this - I'm starting out with C# and need to add values to an array, for example:
23 Answers
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Reading a file line by line in Go
...since the OP asked to scan over a file, it would be trivial to first file, _ := os.Open("/path/to/file.csv") and then scan over the file handle: scanner := bufio.NewScanner(file)
– Evan Plumlee
Aug 18 '13 at 13:28
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What is the difference between precision and scale?
... significant digits.
Reference:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT1832
That page also has some examples that will make you understand precision and scale.
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How to search file text for a pattern and replace it with a given value
...ull. This code is not fit for anything beyond a quick one-off script where all the data is backed up. For that reason, do NOT copy this code into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
ne...
“Connection for controluser as defined in your configuration failed” with phpMyAdmin in XAMPP
I have just installed XAMPP on my Windows XP machine, and I get an error saying:
12 Answers
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Most popular screen sizes/resolutions on Android phones [closed]
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Here is a list of almost all resolutions of tablets, with the most common ones in bold :
2560X1600
1366X768
1920X1200
1280X800
1280X768
1024X800
1024X768
1024X600
960X640
960X540
854X480
800X600
800X480
800X400
Happy designing .. ! :)
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