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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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How to check if AlarmManager already has an alarm set?
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Following up on the comment ron posted, here is the detailed solution. Let's say you have registered a repeating alarm with a pending intent like this:
Intent intent = new Intent("com.my.package.MY_UNIQUE_ACTION");
PendingIntent pendingIntent ...
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...
Making a UITableView scroll when text field is selected
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community wiki
Sam Ho
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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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How to lose margin/padding in UITextView?
...of the text view on the fly, UITextViewFixed usually does all you need.
(A common example of changing the height on the fly, is changing it as the user types.)
Here is the broken UITextView from Apple...
Here is UITextViewFixed:
Note that of course you must...
...turn off scrollEnabled in the Insp...
Get DOS path instead of Windows path
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