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How do you check if a certain index exists in a table?
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Actually.. be careful! This will fail if the index doesn't already exist! At least in SQL Server 2008.
– Andrey Kaipov
Apr 10 '17 at 19:12
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How to apply shell command to each line of a command output?
...es the input is read properly. From the man page of xargs:
-L number
Call utility for every number non-empty lines read.
A line ending with a space continues to the next non-empty line. [...]
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Git stash pop- needs merge, unable to refresh index
...hor did was:
julita@yulys:~/GNOME/baobab/help/C$ git reset --hard origin/mallard-documentation
HEAD is now at ff2e1e2 Add more steps for optional information for scanning.
I.e aborting the current merge completely, allowing the git stash pop to be applied.
See "Aborting a merge in Git".
Those ar...
Bash Script : what does #!/bin/bash mean? [duplicate]
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That is called a shebang, it tells the shell what program to interpret the script with, when executed.
In your example, the script is to be interpreted and run by the bash shell.
Some other example shebangs are:
(From Wikipedia)
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Bootstrap control with multiple “data-toggle”
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That is actually the best approach because it defers the concern of presentation to the presentation layer.
– LastTribunal
Feb 4 '15 at 16:39
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Regex (grep) for multi-line search needed [duplicate]
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Without the need to install the grep variant pcregrep, you can do multiline search with grep.
$ grep -Pzo "(?s)^(\s*)\N*main.*?{.*?^\1}" *.c
Explanation:
-P activate perl-regexp for grep (a powerful extension of regular expressions)
-z suppress...
scrollIntoView Scrolls just too far
... page where a scroll bar containing table rows with divs in them is dynamically generated from the database. Each table row acts like a link, sort of like you'd see on a YouTube playlist next to the video player.
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UIActionSheet cancel button strange behaviour
...s bug some more, and it seems to be an issue with the tabbar.
If you call UIActionSheet's [sheet showInView:self.view] from a view controller that is a child of a UITabViewController, then the hit testing on the cancel button fails in that portion of the UIActionSheet that lies above the tabbar...
Error 5 : Access Denied when starting windows service
...essage when something faulted the service. Check the Event Viewer (specifically the 'Windows Logs > Application') for the real error message.
In my case, it was a bad service configuration setting in app.config.
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Collections.emptyList() vs. new instance
...ntly.
In addition, emptyList() might not create a new object with each call.
Implementations of this method need not create a separate List object for each call. Using this method is likely to have comparable cost to using the like-named field. (Unlike this method, the field does not provide ...