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Reset C int array to zero : the fastest way?
...ee for floating-point or pointer types.)
– Keith Thompson
Jun 16 '13 at 0:17
3
Adding to @KeithTh...
What is the difference between a Docker image and a container?
...with docker images whereas you can see your running containers with docker ps (and you can see all containers with docker ps -a).
So a running instance of an image is a container.
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How can I change the color of my prompt in zsh (different from normal text)?
...
Here's an example of how to set a red prompt:
PS1=$'\e[0;31m$ \e[0m'
The magic is the \e[0;31m (turn on red foreground) and \e[0m (turn off character attributes). These are called escape sequences. Different escape sequences give you different results, from absolute cu...
Is Tomcat running?
...
Why grep ps, when the pid has been written to the $CATALINA_PID file?
I have a cron'd checker script which sends out an email when tomcat is down:
kill -0 `cat $CATALINA_PID` > /dev/null 2>&1
if [ $? -gt 0 ]
then
echo ...
How do you do a ‘Pause’ with PowerShell 2.0?
...ly excludes Shift, Alt, Ctrl modifier keys.
Disadvantage: Does not work in PS-ISE.
<2> ReadKey (RawUI)
Write-Host "Press any key to continue ..."
$x = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
Disadvantage: Does not work in PS-ISE.
Disadvantage: Does not exclude modifier keys.
&l...
How do I get only directories using Get-ChildItem?
...3.0:
The FileInfo object returned by Get-ChildItem has a "base" property, PSIsContainer. You want to select only those items.
Get-ChildItem -Recurse | ?{ $_.PSIsContainer }
If you want the raw string names of the directories, you can do
Get-ChildItem -Recurse | ?{ $_.PSIsContainer } | Select-Ob...
Terminating a script in PowerShell
I've been looking for a way to terminate a PowerShell (PS1) script when an unrecoverable error occurs within a function. For example:
...
Is MATLAB OOP slow or am I doing something wrong?
...of functions and methods. Here are some typical results.
>> call_nops
Computer: PCWIN Release: 2009b
Calling each function/method 100000 times
nop() function: 0.02261 sec 0.23 usec per call
nop1-5() functions: 0.02182 sec 0.22 usec per call
nop() subfunction...
How to Remove ReadOnly Attribute on File Using PowerShell?
... Using PowerShell v2 I'm seeing hard-to-use CmdLet bindngs for sp. PSCX Set-Writable and Set-ReadOnly don't have those problems. I'll blog the problems I'm seeing and link to it later. I recommend Keith's answer for PowerShell v2 (modern PowerShell).
– yzorg
...
How do I get a list of column names from a psycopg2 cursor?
...s directly from the selected column names, and recall seeing that python's psycopg2 module supports this feature.
10 Answer...