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How does a Linux/Unix Bash script know its own PID?
I have a script in Bash called Script.sh , and it needs to know its own PID (i.e. I need to get PID inside the Script.sh )
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
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I was just wrestling with a similar problem myself, but didn't want the overhead of a function. I came up with the following query:
SELECT myfield::integer FROM mytable WHERE myfield ~ E'^\\d+$';
Postgres shortcuts its conditionals, so you shouldn't get any non-integers hitting ...
Using the last-child selector
...ode:
$(function(){
$("#nav li:last-child").css("border-bottom","1px solid #b5b5b5")
})
You can find more info about here : http://api.jquery.com/css/#css2
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How can I count text lines inside an DOM element? Can I?
I'm wondering if there's a way to count lines inside a div for example. Say we have a div like so:
16 Answers
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no acceptable C compiler found in $PATH when installing python
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I'm getting the error "Error accessing file for config file:///etc/yum.conf". I have Bluehost shared hosting.
– Paul Chris Jones
Mar 5 at 16:15
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git: Switch branch and ignore any changes without committing
... The branch checkout will only be allowed if it does not affect the 'dirty files' (as Charles Bailey remarks in the comments).
Otherwise, you should either:
stash your current change or
reset --hard HEAD (if you do not mind losing those minor changes) or
checkout -f (When switching branches, pro...
How to find all the tables in MySQL with specific column names in them?
... play with mysqldump with --skip-extended-insert and then grep through the file... dirty but strangely satifying :)
– Ken
Oct 20 '11 at 17:35
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M_PI works with math.h but not with cmath in Visual Studio
...ine _USE_MATH_DEFINES
#include <cmath>
to be the first thing in my file (I don't use PCHs so if you are you will have to have it after the #include "stdafx.h") and suddenly it compile perfectly.
Try moving it higher up the page. Totally unsure as to why this would cause issues though.
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Android: set view style programmatically
...without extending as the 3 arg constructor is public anyhow developer.android.com/reference/android/widget/…, android.util.AttributeSet, int)
– Dori
Jan 27 '14 at 10:44
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How can I recover a lost commit in Git?
... and you can reset to it (for example:git reset --hard e870e41).
(If you didn't commit your changes... you might be in trouble - commit early, and commit often!)
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