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Improve INSERT-per-second performance of SQLite
...more memory will be used for your database.
If you have indices, consider calling CREATE INDEX after doing all your inserts. This is significantly faster than creating the index and then doing your inserts.
You have to be quite careful if you have concurrent access to SQLite, as the whole database i...
Why do people say there is modulo bias when using a random number generator?
...AND_MAX is 10 and I decide to generate a random number between 0 and 2 by calling rand()%3. However, rand()%3 does not produce the numbers between 0 and 2 with equal probability!
When rand() returns 0, 3, 6, or 9, rand()%3 == 0. Therefore, P(0) = 4/11
When rand() returns 1, 4, 7, or 10, rand()%3 ...
How to get the current directory in a C program?
...ers just char *buf=getcwd(NULL,0); and when you are done free(buf) (as of POSIX.1-2001)
– bliako
Jan 24 '19 at 20:06
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Is optimisation level -O3 dangerous in g++?
...n undefined behavior, due to relying more strictly on the rules, and especially corner cases, of the language(s).
As a personal note, I am running production software in the financial sector for many years now with -O3 and have not yet encountered a bug that would not have been there if I would hav...
mingw-w64 threads: posix vs win32
I'm installing mingw-w64 on Windows and there are two options: win32 threads and posix threads. I know what is the difference between win32 threads and pthreads but I don't understand what is the difference between these two options. I doubt that if I will choose posix threads it will prevent me fro...
How to set NODE_ENV to production/development in OS X
...the second example (NODE_ENV=production node app.js). That way you potentially save yourself from some future hair-pulling in the event that you forget to set your local NODE_ENV back to development.
– Jon
Feb 15 '14 at 19:52
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Unmount the directory which is mounted by sshfs in Mac [closed]
I've installed OSXFUSE in my mac and used sshfs to mount a remote directory. Now I would like to unmount it, but can't find the way.
My OS is OSX 10.8 Mountain.
Can anyone help?
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Android Studio quick documentation always “fetching documentation”
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The problem is Android Studio does not automatically update the source link of reference even when the documentation is already downloaded.
The default link in jdk.table.xml is http://developer.android.com/reference/ (android studio tries to connect to this online server ...
How can I run an external command asynchronously from Python?
..., or use wait() to wait for it to terminate.
– Adam Rosenfield
Mar 11 '09 at 22:09
Adam, very true, although it could ...
Multiple glibc libraries on a single host
...d to know that glibc consists of many pieces (200+ shared libraries) which all must match. One of the pieces is ld-linux.so.2, and it must match libc.so.6, or you'll see the errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easi...