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What is the best way to compare floats for almost-equality in Python?
...ark Ransom
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27
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
... amount greater than or equal to the number of bits in the number (e.g. int64_t i = 1; i <<= 72 is undefined)
Types, Cast and Const
Casting a numeric value into a value that can't be represented by the target type (either directly or via static_cast)
Using an automatic variable before it has...
vbscript output to console
...
64
This was found on Dragon-IT Scripts and Code Repository.
You can do this with the following an...
How to find and return a duplicate value in array
...y contains 100 elements:
benchmark(100, 0)
0 duplicates
Running each test 64 times. Test will take about 2 seconds.
Cary_set is similar to Cary_diff
Cary_diff is similar to Ryan
Ryan is similar to Sergio
Sergio is faster than Chris by 4x ± 1.0
Chris is faster than Naveed by 2x ± 1.0
benchmark(10...
Why does Clojure have “keywords” in addition to “symbols”?
...
Brian CarperBrian Carper
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...
Correct way to use StringBuilder in SQL
...have been 26 to start with, then doubled to 52, then 104, 208, 416, 832, 1664, 3328, and finally 6656). Only significant if this is a hotspot, but still, if you know in advance... :-)
– T.J. Crowder
Jan 4 '12 at 12:24
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NumPy: function for simultaneous max() and min()
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as of numpy 1.8 min and max are vectorized on amd64 platforms,on my core2duo numpy performs as well as this fortran code. But a single pass would be advantageous if the array exceed the size of the larger cpu caches.
– jtaylor
Mar 7 '1...
With arrays, why is it the case that a[5] == 5[a]?
...t back in the 70's when C was designed, computers didn't have much memory (64KB was a lot), so the C compiler didn't do much syntax checking. Hence "X[Y]" was rather blindly translated into "*(X+Y)"
This also explains the "+=" and "++" syntaxes. Everything in the form "A = B + C" had the same c...
Rails: FATAL - Peer authentication failed for user (PG::Error)
...versions are available
psql=# select VERSION();
PostgreSQL 9.1.13 on x86_64-unk.... # so version is 9.1
Now Open postgres user
vim /etc/postgresql/9.1/main/pg_hba.conf
9.1 is version return form upper command
and replace
local all postgres ...
How to concatenate two MP4 files using FFmpeg?
...ng them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to keep the quality the same or as close to original as possible.
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