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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?
...uggestion (above), this approach has the advantage of being very clear re: what's going on. (Still has the downside of not letting you pass nil as a value for the local)
– brahn
Jan 18 '10 at 3:59
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Difference in months between two dates
...ur solution may indeed be the best choice. E.g. it's important to consider what happens when two dates span a 31 day month, a 30 day month, a 28 day February or a 29 day February. If the results of your formula deliver what the system requires then it's clearly the right choice. If not, then somethi...
How to create a temporary directory/folder in Java?
...ds including:
File myTempDir = Files.createTempDir();
This does exactly what you asked for in one line. If you read the documentation here you'll see that the proposed adaptation of File.createTempFile("install", "dir") typically introduces security vulnerabilities.
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Add a default value to a column through a migration
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On PostgreSQL, yes, I don't know what will happen on other databases.
– Maurício Linhares
Jan 23 '15 at 13:46
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Convert Iterator to ArrayList
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I don't get it. In what way is the ArrayList returned by, say, Guava any better than a normal ArrayList? Do they do it in a more efficient way? Even if it is more efficient is it really worth adding an extra dependency (and more complexity) to ...
Black transparent overlay on image hover with only CSS?
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Thanks Josh. I like this version best. What would you do if you wanted to display some white text on top of that transparent blackness? Would you add another div and apply opacity to that separately?
– RobVious
Aug 19 '13 at...
How would I extract a single file (or changes to a file) from a git stash?
...ostly I find the git checkout application to be the best way to accomplish what it is I wanted to do. However I was curious and double-checked git checkout's man page. It cannot drop the file into another location. There is a reference to this in: stackoverflow.com/questions/888414/…
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How do I rename the android package name? [duplicate]
...mp.fooapp:
Set the cursor on "foocomp"
Press Shift+F6
Rename Package to whatever you want
Repeat for "fooapp".
Works for me.
Also, replace in Path in Whole Project as it didn't change everything. Then Clean, Rebuild and it works --> In Android Studio / IntelliJ you should unmark "Compact E...
How to pause a YouTube player when hiding the iframe?
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What enhanced readability was changing the ? conditional to if / else but thanks for starting me out on this. I just felt I had something to valid add is all.
– DrewT
Dec 6 '13 at 0:17
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Why does printf not flush after the call unless a newline is in the format string?
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The stdout stream is line buffered by default, so will only display what's in the buffer after it reaches a newline (or when it's told to). You have a few options to print immediately:
Print to stderrinstead using fprintf (stderr is unbuffered by default):
fprintf(stderr, "I will be printed...