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Is memcached a dinosaur in comparison to Redis? [closed]
...ould not care too much about performances. Redis is faster per core with small values, but memcached is able to use multiple cores with a single executable and TCP port without help from the client. Also memcached is faster with big values in the order of 100k. Redis recently improved a lot about bi...
Tools for JPEG optimization? [closed]
Do you know of any tools (preferrably command-line) to automatically and losslessly optimize JPEGs that I could integrate into our build environment? For PNGs I'm currently using PNGOUT , and it generally saves around 40% bandwidth/image size.
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How do I execute a command and get the output of the command within C++ using POSIX?
...use the C stdio API, I prefer the iostreams API. popen requires you to manually clean up the FILE handle, pstreams do that automatically. popen only accepts a const char* for the argument, which requires care to avoid shell injection attacks, pstreams allows you to pass a vector of strings similar t...
How can I get list of values from dict?
... std. dev. of 7 runs, 100 loops each)
Done on Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz.
# Name Version Build
ipython 7.5.0 py37h24bf2e0_0
The result
For small dictionaries * operator is quicker
For big dictionaries where it mat...
PHP foreach change original array values
...lt;= 0) {
$fields[$key]['value'] = "Some error";
}
}
So basically use $field when you need the values, and $fields[$key] when you need to change the data.
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Why does this code using random strings print “hello world”?
...gorithms are specified for the class Random. Java implementations must use all the algorithms shown here for the class Random, for the sake of absolute portability of Java code."
– FThompson
Aug 27 '13 at 3:05
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How to stop/terminate a python script from running?
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You can also do it if you use the exit() function in your code. More ideally, you can do sys.exit(). sys.exit() which might terminate Python even if you are running things in parallel through the multiprocessing package.
Note: In order to use the sys.exit(), you must import it: import sys
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What are the -Xms and -Xmx parameters when starting JVM?
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The flag Xmx specifies the maximum memory allocation pool for a Java virtual machine (JVM), while Xms specifies the initial memory allocation pool.
This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of ...
What is the difference between concurrent programming and parallel programming?
What is the difference between concurrent programming and parallel programing? I asked google but didn't find anything that helped me to understand that difference. Could you give me an example for both?
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Checking to see if one array's elements are in another array in PHP
... checked the performance of each. The interesting thing is that the total CPU time, i.e. user time + system time is the same for PHP5.6 and the memory also is the same. The total CPU time under PHP5.4 is less for in_array than array_intersect, albeit marginally so.
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