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How do I uniquely identify computers visiting my web site?
...cted these
fingerprints from a large sample of browsers that visited our test side,
panopticlick.eff.org. We observe that the distribution of our finger-
print contains at least 18.1 bits of entropy, meaning that if we pick a
browser at random, at best we expect that onl...
Why am I getting a “401 Unauthorized” error in Maven?
... false
[DEBUG] (f) packaging = exe
[DEBUG] (f) pomFile = c:\temp\build-test\pom.xml
[DEBUG] (f) project = MavenProject: org.apache.maven:standalone-pom:1 @
[DEBUG] (f) repositoryId = remote-repository
[DEBUG] (f) repositoryLayout = default
[DEBUG] (f) retryFailedDeploymentCount = 1
[DEB...
What is the difference between String.Empty and “” (empty string)?
... to .Empty, but still not as fast as .Length == 0.
.Length == 0 is the fastest option, but .Empty makes for slightly cleaner code.
See the .NET specification for more information.
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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...the "Best One Liner" winner of the 1987 International Obfuscated C Code Contest, by David Korn (yes, the author of the Korn Shell) took advantage of the predefined unix macro:
main() { printf(&unix["\021%six\012\0"],(unix)["have"]+"fun"-0x60);}
It prints "unix", but for reasons that have abso...
Difference between \w and \b regular expression meta characters
...iptkit.com/javatutors/redev2.shtml
http://www.virtuosimedia.com/dev/php/37-tested-php-perl-and-javascript-regular-expressions
http://www.i-programmer.info/programming/javascript/4862-master-javascript-regular-expressions.html
I found this to be a very useful book:
Mastering Regular Expressions b...
Efficiently updating database using SQLAlchemy ORM
...
Withough testing, I'd try:
for c in session.query(Stuff).all():
c.foo = c.foo+1
session.commit()
(IIRC, commit() works without flush()).
I've found that at times doing a large query and then iterating in python can be up to 2...
Does R have an assert statement as in python?
...
stopifnot()
You may also be interested in packages like Runit and testthat for unit testing.
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What are the differences between Autotools, Cmake and Scons?
... ARCANE m4 macro syntax combined with verbose, twisted shell scripting for tests for "compatibility", etc.
If you're not paying attention, you will mess up cross-compilation ability (It
should clearly be noted that Nokia came up with Scratchbox/Scratchbox2 to side-step highly broken Autotools build ...
Regex to check whether a string contains only numbers [duplicate]
...
If you want to test if a string is a parse-able number, including negatives and decimal: /^-?\d+\.?\d*$|^\d*\.?\d+$/
– SpYk3HH
Apr 5 '16 at 18:59
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Programmatically Determine a Duration of a Locked Workstation?
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Tested 100% on Windows 7 x64 and Windows 10 x64.
– Contango
Jan 5 '17 at 17:15
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