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Understanding the main method of python [duplicate]
...proach to "main" is almost unique to the language(*).
The semantics are a bit subtle. The __name__ identifier is bound to the name of any module as it's being imported. However, when a file is being executed then __name__ is set to "__main__" (the literal string: __main__).
This is almost always...
mysql_config not found when installing mysqldb python interface
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answered Oct 10 '12 at 8:01
xtornasol512xtornasol512
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How do I choose grid and block dimensions for CUDA kernels?
.... They can be roughly summarized as:
Each block cannot have more than 512/1024 threads in total (Compute Capability 1.x or 2.x and later respectively)
The maximum dimensions of each block are limited to
[512,512,64]/[1024,1024,64] (Compute 1.x/2.x or later)
Each block cannot consume more than 8k/16...
Why does Java switch on contiguous ints appear to run faster with added cases?
...t of this code involves multiplying double variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but not the fastest possible, see Update 2 below) to get the multiplied value is to switch on the exponent :
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What is the largest Safe UDP Packet Size on the Internet
...s to be a necessary consequence of IPv4: The IPv4 total length field is 16 bits, and that value must include the length of the IP header and the length of the UDP header.
– jtpereyda
Oct 13 '16 at 22:18
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What is Cache-Control: private?
...te proxy, then all 67198 users hitting the same page in the same 15-second window will all get the same contents - all served from close cache. Performance win for everyone.
The virtue of adding Cache-Control: max-age is that the browser doesn't even have to perform a conditional request.
if you ...
Parse a .py file, read the AST, modify it, then write back the modified source code
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You might not need to re-generate source code. That's a bit dangerous for me to say, of course, since you have not actually explained why you think you need to generate a .py file full of code; but:
If you want to generate a .py file that people will actually use, maybe so that ...
Mapping two integers to one, in a unique and deterministic way
... if you plan to implement a pairing function, you may soon find you need arbitrarily large integers (bignums).
If you don't want to make a distinction between the pairs (a, b) and (b, a), then sort a and b before applying the pairing function.
Actually I lied. You are looking for a bijective ZxZ -&g...
Accessing an SQLite Database in Swift
...t which can be implemented as follows:
internal let SQLITE_STATIC = unsafeBitCast(0, to: sqlite3_destructor_type.self)
internal let SQLITE_TRANSIENT = unsafeBitCast(-1, to: sqlite3_destructor_type.self)
Reset SQL to insert another value. In this example, I'll insert a NULL value:
if sqlite3_reset...
Disable messages upon loading a package
...Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-linux-gnu (64-bit)
[...]
R> suppressMessages(library(ROCR))
R> # silently loaded
R> search()
[1] ".GlobalEnv" "package:ROCR" # it's really there
[3] "package:...