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What's a concise way to check that environment variables are set in a Unix shell script?
...tive, exits. Otherwise, the value of parameter is substituted.
The Colon Command
I should probably add that the colon command simply has its arguments evaluated and then succeeds. It is the original shell comment notation (before '#' to end of line). For a long time, Bourne shell scripts had a c...
How to fix committing to the wrong Git branch?
I just made a perfectly good commit to the wrong branch.
How do I undo the last commit in my master branch and then take those same changes and get them into my upgrade branch?
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git status shows modifications, git checkout — doesn't remove them
...aviour:
Line ending normalization
I've had these kinds of problems too. It comes down to git automatically converting crlf to lf. This is typically caused by mixed line endings in a single file. The file gets normalized in the index, but when git then denormalizes it again to diff it against the fil...
How to get ID of the last updated row in MySQL?
...LECT @uids;
This will return a string with all the IDs concatenated by a comma.
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How to send an object from one Android Activity to another using Intents?
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community wiki
6 revs, 6 users 71%Jeremy Logan
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boundingRectWithSize for NSAttributedString returning wrong size
...turned in the paragraphRect is almost always a fractional value. So it may come out saying 141.3 as the height. You need use the result from ceilf(paragraphRect.size.height) so that it rounds up. I forget this all the time and wonder why my labels are still clipping.
– jamone
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Get DOS path instead of Windows path
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Randomize a List
...k];
list[k] = list[n];
list[n] = value;
}
}
A simple comparison is available at this blog (WayBack Machine).
Edit: Since writing this answer a couple years back, many people have commented or written to me, to point out the big silly flaw in my comparison. They are of course r...
How to perform better document version control on Excel files and SQL schema files
... them in it. When you get a new version of a file, simply overwrite it and commit, Git will figure out everything for you, and you'll be able to see modification dates, checkout specific versions of this file and compare different versions.
The same is true for .xlsx if you decompress them. .xlsx f...
Configure Log4net to write to multiple files
... similar stuff. Would be glad if you can answer my question: stackoverflow.com/questions/24886364/…
– Ashish Charan
Jul 22 '14 at 11:52
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