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How to check if string input is a number? [duplicate]
How do I check if a user's string input is a number (e.g. -1 , 0 , 1 , etc.)?
24 Answers
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Example of Named Pipes
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174
using System;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Text;
us...
How to SSH to a VirtualBox guest externally through a host? [closed]
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15 Answers
15
Active
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Calculate last day of month in JavaScript
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var month = 0; // January
var d = new Date(2008, month + 1, 0);
alert(d); // last day in January
IE 6: Thu Jan 31 00:00:00 CST 2008
IE 7: Thu Jan 31 00:00:00 CST 2008
IE 8: Beta 2: Thu Jan 31 00:00:00 CST 2008
Opera 8.54: ...
Restore LogCat window within Android Studio
I have recently started to use Android Studio v0.1.1, And i can't seem to find LogCat... Is it gone? Or if not, how can I enable it?
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How do I test for an empty string in a Bash case statement?
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127
The case statement uses globs, not regexes, and insists on exact matches.
So the empty string...
matplotlib Legend Markers Only Once
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This should work:
legend(numpoints=1)
BTW, if you add the line
legend.numpoints : 1 # the number of points in the legend line
to your matplotlibrc file, then this will be the new default.
[See also scatterpoints, depending on your plot.]
API: L...
How to wait for all goroutines to finish without using time.Sleep?
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175
You can use sync.WaitGroup. Quoting the linked example:
package main
import (
"net/h...
How to clear the canvas for redrawing
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1338
const context = canvas.getContext('2d');
context.clearRect(0, 0, canvas.width, canvas.height...