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Checking Bash exit status of several commands efficiently
...mmand.
function mytest {
"$@"
local status=$?
if (( status != 0 )); then
echo "error with $1" >&2
fi
return $status
}
mytest "$command1"
mytest "$command2"
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Double Negation in C++
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answered Oct 29 '08 at 22:47
Don NeufeldDon Neufeld
20.8k1010 gold badges4949 silver badges4949 bronze badges
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Why is printing “B” dramatically slower than printing “#”?
I generated two matrices of 1000 x 1000 :
3 Answers
3
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Google Maps v2 - set both my location and zoom in
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205
You cannot animate two things (like zoom in and go to my location) in one google map?
From...
Configuration System Failed to Initialize
... or app.config if windows) in your project starts as:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings"
type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral...
What is the equivalent of the C++ Pair in Java?
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404
In a thread on comp.lang.java.help, Hunter Gratzner gives some arguments against the presence o...
Accurate way to measure execution times of php scripts
...turned does contain the microseconds... Best solution is to times this by 1000... see stackoverflow.com/questions/3656713/… as an example..
– Angry 84
Jun 2 '16 at 2:01
1
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Hashing a file in Python
... break
md5.update(data)
sha1.update(data)
print("MD5: {0}".format(md5.hexdigest()))
print("SHA1: {0}".format(sha1.hexdigest()))
What we've done is we're updating our hashes of this bad boy in 64kb chunks as we go along with hashlib's handy dandy update method. This way we use a...
Obtaining a powerset of a set in Java
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101
Yes, it is O(2^n) indeed, since you need to generate, well, 2^n possible combinations. Here's a...
How do I discover memory usage of my application in Android?
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1013
Note that memory usage on modern operating systems like Linux is an extremely complicated and ...