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Java regex capturing groups indexes
... | 3---------------3 |
2-----------------------------------------2
The group numbers are used in back-reference \n in pattern and $n in replacement string.
In other regex flavors (PCRE, Perl), they can also be used in sub-routine calls.
You can...
SQL standard to escape column names?
...
|
edited Oct 22 '18 at 3:27
Basil Bourque
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Is there a common Java utility to break a list into batches?
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257
Check out Lists.partition(java.util.List, int) from Google Guava:
Returns consecutive su...
MySQL IF NOT NULL, then display 1, else display 0
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214
Instead of COALESCE(a.addressid,0) AS addressexists, use CASE:
CASE WHEN a.addressid IS NOT N...
Android SDK on a 64-bit linux machine
...n a 64-bit linux machine. The available SDK downloads seem to be just for 32-bit versions of Linux.
15 Answers
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Chmod recursively
... |
edited Nov 14 '12 at 11:30
answered Nov 14 '12 at 11:23
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How do you create nested dict in Python?
I have 2 CSV files: 'Data' and 'Mapping':
4 Answers
4
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Python argparse mutual exclusive group
... | [-b yyy -c zzz]], you'd have:
prog
command 1
-a: ...
command 2
-b: ...
-c: ...
To invoke with the first set of arguments:
prog command_1 -a xxxx
To invoke with the second set of arguments:
prog command_2 -b yyyy -c zzzz
You can also set the sub command arguments as posi...
How to send POST request?
...
>>> r = requests.post("http://bugs.python.org", data={'number': 12524, 'type': 'issue', 'action': 'show'})
>>> print(r.status_code, r.reason)
200 OK
>>> print(r.text[:300] + '...')
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xh...
Is unsigned integer subtraction defined behavior?
...t can be
represented by the resulting type.
(ISO/IEC 9899:1999 (E) §6.2.5/9)
As you can see, (unsigned)0 - (unsigned)1 equals -1 modulo UINT_MAX+1, or in other words, UINT_MAX.
Note that although it does say "A computation involving unsigned operands can never overflow", which might lead ...