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Passing argument to alias in bash [duplicate]
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Just want to add example from my .bashrc mkcd () { mkdir "$@" && cd "$@"; } where i'm creating dir and cd'ing into
– Vova Lando
Dec 30 '13 at 15:06
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ERROR 2006 (HY000): MySQL server has gone away
...ation/options, and I wasn't willing to go down a programmatic solution via PHP or other.
– Richard Sitze
Dec 16 '12 at 21:15
160
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Check if PHP session has already started
I have a PHP file that is sometimes called from a page that has started a session and sometimes from a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
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How to show math equations in general github's markdown(not github's blog)
...e following markdown syntax
it will display the following image
equation http://www.sciweavers.org/tex2img.php?eq=1%2Bsin%28mc%5E2%29&bc=White&fc...
multiprocessing: How do I share a dict among multiple processes?
...ash(k)
while ht[h] != 0xffffffff:
h = (h + 1) & (self.hs - 1)
ht[h] = kvp
kvp += self.kvlen(k) + self.kvlen(v)
kvl.append(k)
kvl.append(v)
self.m = mmap(-1, kvp)
for p in ht:
self.m.write(uin...
How do I execute any command editing its file (argument) “in place” using bash?
...s actually wondering if there is a generic solution to this problem. For example if I want to find all UNIQ lines in a file "in place", I can't do -o
– jm.
Sep 28 '08 at 21:45
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How to generate keyboard events in Python?
...dwFflags, so attempt to map the correct code.
if not self.dwFlags & KEYEVENTF_UNICODE:
self.wScan = user32.MapVirtualKeyExW(self.wVk,
MAPVK_VK_TO_VSC, 0)
class HARDWAREINPUT(ctypes.Structure):
_fields_ = (("uMsg", winty...
Remove not alphanumeric characters from string
... could come up with was:
string.replace(/[^A-Za-z0-9]/g, '');
Here's an example that captures every key I could find on the keyboard:
var string = '123abcABC-_*(!@#$%^&*()_-={}[]:\"<>,.?/~`';
var stripped = string.replace(/[^A-Za-z0-9]/g, '');
console.log(stripped);
Outputs: '123abcABC'....
How do I check if a file exists in Java?
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Using java.io.File:
File f = new File(filePathString);
if(f.exists() && !f.isDirectory()) {
// do something
}
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Capture Image from Camera and Display in Activity
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Here's an example activity that will launch the camera app and then retrieve the image and display it.
package edu.gvsu.cis.masl.camerademo;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
im...