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How do I check which version of NumPy I'm using?
...t 13 2017, 12:02:49)
[GCC 7.2.0]
Platform: linux-x86_64
AMD/Intel CPU? True
VML available? False
Number of threads used by default: 8 (out of 48 detected cores)
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How can I repeat a character in Bash?
...l of the arguments, this simply prints "=" 100 times.
Using head (printf, etc) and tr:
head -c 100 < /dev/zero | tr '\0' '='
printf %100s | tr " " "="
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Why is lock(this) {…} bad?
...WCF objects, HttpContext.Current, Thread.Current, Singletons (in general), etc. The easiest way to avoid all of this? private [static] object myLock = new object();
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How to decide when to use Node.js?
...votes. There's no simple way to read one record at a time from a CSV file. Etc.
I love NodeJS, it is fast and wild and fun, but I am concerned it has little interest in provable-correctness. Let's hope we can eventually merge the best of both worlds. I am eager to see what will replace Node in t...
Undefined, unspecified and implementation-defined behavior
...many "things" are left
undefined, unspecified,
implementation-defined, etc. However,
that's easy to say and even to give
examples of, but hard to fix. It
should also be noted that it is not
all that difficult to avoid most of
the problems and produce portable
code.
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How does Java handle integer underflows and overflows and how would you check for it?
...r absolute value than the computer can actually represent in memory on its CPU. So underflow does not apply to Java Integers. @BalusC
– Jingguo Yao
Oct 14 '18 at 15:10
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Polymorphism in C++
...hosen at runtime based on config files, command line switches, UI settings etc.,
implementation varied at runtime, such as for a state machine pattern.
When there's not a clear driver for run-time polymorphism, compile-time options are often preferable. Consider:
the compile-what's-called aspec...
How to create an infinite loop in Windows batch file?
...ver reason. It may however be wise to put a small wait in the loop to stop cpu thrashing if my program dies instantly for some reason.
– John Hunt
Jun 17 '15 at 10:27
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How to sum up an array of integers in C#
...= arr.AsParallel().Sum(); a faster version that uses multiple cores of the CPU. To avoid System.OverflowException you can use long sum = arr.AsParallel().Sum(x => (long)x); For even faster versions that avoid overflow exception and support all integer data types and uses data parallel SIMD/SSE in...
How can you do anything useful without mutable state?
...odies which make programming more efficient, such as first-class functions etc.
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