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Is there a performance gain in using single quotes vs double quotes in ruby?
...rsed to a tSTRING_CONTENT (see the source in parse.y). In other words, the CPU will go through the exact same operations when creating 'string' or "string". The exact same bits will flip the exact same way. Benchmarking this will only show differences that are not significant and due to other factor...
Time complexity of Euclid's Algorithm
...rations is linear in the number of input digits. For numbers that fit into cpu registers, it's reasonable to model the iterations as taking constant time and pretend that the total running time of the gcd is linear.
Of course, if you're dealing with big integers, you must account for the fact that ...
String.Replace ignoring case
...nsensitive way to replace all values.
Advantages of this method:
High CPU and MEMORY efficiency;
It is the fastest solution, 2.5 times faster than other's methods
with regular expressions (proof in the end);
Suitable for removing parts from the input string (set newValue to
null), optimized for...
Unable to load SOS in WinDbg
...nging to get both on my system, since the latest installers autodetect the CPU type. Is there an override flag that you know of for the msi? I'm going to install an old 32bit version of WinDbg, but don't know what to expect.
– Dave
Dec 21 '10 at 7:51
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Find size of object instance in bytes in c#
... the memory consumption of a runtime graph of objects. VS2017's memory and CPU profiling are very good, as are ReSharper's and other tools, and that's what I'd use to measure.
– jnm2
Mar 9 '17 at 18:23
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What's the difference between `1L` and `1`?
... large vectors, that's less wasted memory and less to wade through for the CPU (so it's typically faster).
Mostly this applies when working with indices.
Here's an example where adding 1 to an integer vector turns it into a double vector:
x <- 1:100
typeof(x) # integer
y <- x+1
typeof(y) # ...
Difference between API and ABI
...system. The ABI defines the API plus the machine language for a particular CPU family. An API does not ensure runtime compatibility, but an ABI does, because it defines the machine language, or runtime, format.
Courtesy
...
What is the meaning of “__attribute__((packed, aligned(4))) ”
...the word size, which increases the system's performance due to the way the CPU handles memory.
To align the data, it may be necessary to insert some meaningless bytes between the end of the last data structure and the start of the next, which is data structure padding.
gcc provides functionality...
Are GUID collisions possible?
...depend on how the GUID is generated, and some implementations based on the CPU time or milliseconds will (hopefully) exagerate whatever calculation its based off of so two GUID's generated from milliseconds apart will have a vast difference.
– Dalin Seivewright
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Is there a library function for Root mean square error (RMSE) in python?
...i-gigabyte sized libraries; requiring 3 to 20 minute Network download then CPU full-tilt installs, when all you really need is about 3 lines of code that fits in 400 bytes. If you ask for a library for a job that can be compressed into a 1 line of code, that's about 90 characters wide, then you're ...