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How can we match a^n b^n with Java regex?
...the finalized pattern, with additional test cases, including one that's 10,000 characters long:
$tests = array(
'aaa', 'aaab', 'aaaxb', 'xaaab', 'b', 'abbb', 'aabb', 'aaabbbbb', 'aaaaabbb',
'', 'ab', 'abb', 'aab', 'aaaabb', 'aaabbb', 'bbbaaa', 'ababab', 'abc',
str_repeat('a', 5000).str_repeat(...
How to profile a bash shell script slow startup?
...ay even compute diff time:
paste <(
while read tim ;do
crt=000000000$((${tim//.}-10#0$last))
printf "%12.9f\n" ${crt:0:${#crt}-9}.${crt:${#crt}-9}
last=${tim//.}
done < sample-time.24804.tim
) sample-time.24804.log
1388487534.391309713 + (( i=3 ))...
How can I link to a specific glibc version?
...ifying a symbol version may be necessary still.
– 0xC0000022L
May 4 '17 at 9:10
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When and why are database joins expensive?
...e performance, IME, is caching calculated values instead of reading the 10,000 rows required to calculate them.
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What does do?
...L and about 20 minutes of coding. To get IE to work I had to add another 1,000 lines of code (mostly 3rd party javascript)and 2-3 hours of work! I really hate IE =>
– L84
Mar 28 '13 at 2:02
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How do I print a list of “Build Settings” in Xcode project?
...OT /var/folders/2x/rvb2r9s16mq6r318zxvn0lk80000gn/C/com.apple.Xcode.501
CCHROOT /var/folders/2x/rvb2r9s16mq6r318zxvn0lk80000gn/C/com.apple.Xcode.501
CHMOD /bin/chmod
CHOWN ...
Should I implement __ne__ in terms of __eq__ in Python?
...
ShadowRangerShadowRanger
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Getting the closest string match
...ample, there are currently projects underway to sequence the genomes of 10,000 vertebrate species, each a billion letters long or so. Naturally, we will want to do pairwise inexact string matching on the data...
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Memcached vs. Redis? [closed]
...t has to and will give you back memory it is no longer using.
I stored 100,000 ~2KB strings (~200MB) of random sentences into both. Memcached RAM usage grew to ~225MB. Redis RAM usage grew to ~228MB. After flushing both, redis dropped to ~29MB and memcached stayed at ~225MB. They are similarly effic...
Fastest way to iterate over all the chars in a String
... in multiples of two starting with 0,1,2,4,8,16 etc.
The tests are done 1,000 times per string size
The tests are shuffled into random order each time. In other words, the tests are done in random order every time they are done, over 1000 times over.
The entire test suite is done forwards, and ba...