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Ruby on Rails: How do I add placeholder text to a f.text_field?
How can I add placeholder text to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text?
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Is gettimeofday() guaranteed to be of microsecond resolution?
I am porting a game, that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux).
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Favorite Django Tips & Features?
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This alleviates you from always type os.path.join() which gets annoying pretty fast: j = lambda filename: os.path.join(PROJECT_DIR, filename). Then you just need to type j("static").
– wr.
Ma...
Bomb dropping algorithm
...to bomb the hollow rectangle of
squares just inside the perimeter. I'll call the perimeter layer 1, and the rectangle inside it layer 2.
An important insight is that there is no point bombing layer 1, because the
"blast radius" you get from doing so is always contained within the blast radius of...
Clang vs GCC for my Linux Development project
...inux-gnu/4.3.4/include/g++-v4/ostream:112: note: candidates are: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>& (*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = char, _Traits...
Get path from open file in Python
If I have an opened file, is there an os call to get the complete path as a string?
4 Answers
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Random row from Linq to Sql
... select row).FirstOrDefault();
Note that this is only suitable for small-to-mid-size tables; for huge tables, it will have a performance impact at the server, and it will be more efficient to find the number of rows (Count), then pick one at random (Skip/First).
for count approach:
var qry...
IE7 Z-Index Layering Issues
...ex bug, but don't know how to fix it.
I have been playing with z-index all day long.
11 Answers
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Difference between
...ts, what type of object could you add to List foo3 that would be legal for all the above possible ArrayList assignments:
You can't add an Integer because foo3 could be pointing at a List<Double>.
You can't add a Double because foo3 could be pointing at a List<Integer>.
You can't add a ...
Delete directory with files in it?
I wonder, what's the easiest way to delete a directory with all its files in it?
33 Answers
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