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MySQL select where column is not empty
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282
Compare value of phone2 with empty string:
select phone, phone2
from jewishyellow.users
wher...
Cordova: start specific iOS emulator image
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csantanaprcsantanapr
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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287
New solution (PostgreSQL 8.4)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION BY...
Mockito: List Matchers with generics
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282
For Java 8 and above, it's easy:
when(mock.process(Matchers.anyList()));
For Java 7 and belo...
How to Iterate over a Set/HashSet without an Iterator?
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8 Answers
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Is [UIScreen mainScreen].bounds.size becoming orientation-dependent in iOS8?
I ran the following code in both iOS 7 and iOS 8:
18 Answers
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Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...(x & 0x0f0f0f0f) << 4));
x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8));
return((x >> 16) | (x << 16));
}
From the famous Bit Twiddling Hacks page:
Fastest (lookup table):
static const unsigned char BitReverseTable256[] =
{
0x00, 0x8...
Write to UTF-8 file in Python
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I believe the problem is that codecs.BOM_UTF8 is a byte string, not a Unicode string. I suspect the file handler is trying to guess what you really mean based on "I'm meant to be writing Unicode as UTF-8-encoded text, but you've given me a byte string!"
Try writing th...
How do I determine if my python shell is executing in 32bit or 64bit?
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18 Answers
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Python and pip, list all versions of a package that's available?
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