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How large should my recv buffer be when calling recv in the socket library
...e) or an end-of-message delimiter (which might just be a newline in a text-based protocol, for example). A third, lesser-used, option is to mandate a fixed size for each message. Combinations of these options are also possible - for example, a fixed-size header that includes a length value.
SOCK_D...
What is the difference between Cygwin and MinGW?
...for Windows.
About Cygwin
The purpose of Cygwin is to make porting Unix-based applications to Windows much easier, by emulating many of the small details that Unix-based operating systems provide, and are documented by the POSIX standards. Your application can use Unix feature such as pipes, Uni...
How to check SQL Server version
...t could be set to a lower compatibility.
IF EXISTS (SELECT * FROM sys.databases WHERE database_id=DB_ID() AND [compatibility_level] < 110)
RAISERROR('Database compatibility level must be SQL2008R2 or later (110)!', 16, 1)
...
Get operating system info
...
Based on the answer by Fred-II I wanted to share my take on the getOS function, it avoids globals, merges both lists and detects the architecture (x32/x64)
/**
* @param $user_agent null
* @return string
*/
function getOS(...
Floating point vs integer calculations on modern hardware
...
@JohannesSchaub-litb: SSE2 (baseline for x86-64) has packed double-precision FP. With only two 64-bit doubles per register, the potential speedup is smaller than float for code that vectorizes well. Scalar float and double use XMM registers on x86-64,...
Unable to execute dex: GC overhead limit exceeded in Eclipse
...s
-Dosgi.requiredJavaVersion=1.6
-XX:MaxPermSize=256m
-Xms512m
-Xmx1024m
based on the answer marked as correct, changing
-XX:MaxPermSize=256m
-Xms512m
-Xmx1024m
and:
--launcher.XXMaxPermSize
1024m
share
|
...
dispatch_after - GCD in Swift?
... with this answer, I had already compensated for its loss by writing a GCD-based cancelable timer (using a dispatch_source_t, because that's something you can cancel).
– matt
Dec 1 '15 at 16:43
...
Browsing Folders in MSYS
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
Why does volatile exist?
... @curiousguy it did not decide wrongly. It made the correct deduction based on the information given. If you fail to mark something volatile, the compiler is free to assume that it is not volatile. That's what the compiler does when optimizing code. If there is more information, namely, that sa...
Generating a SHA-256 hash from the Linux command line
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For the sha256 hash in base64, use:
echo -n foo | openssl dgst -binary -sha1 | openssl base64
Example
echo -n foo | openssl dgst -binary -sha1 | openssl base64
C+7Hteo/D9vJXQ3UfzxbwnXaijM=
...