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Windows batch script launch program and exit console
... I double click on this batch file, notepad starts normally, but the black window of the cmd who launched notepad.exe remains in the background. What do I have to do in order to launch notepad.exe and make the cmd window disappear?
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...). Secondly, the std::mutex is implemented in way that it spin locks for a bit before actually doing system calls when it fails to immediately obtain the lock on a mutex (which no doubt will be extremely slow). So what I have measured here is the absolute most ideal situtation and in practise lockin...
Why is an int in OCaml only 31 bits?
Haven't seen this "feature" anywhere else. I know that the 32nd bit is used for garbage collection. But why is it that way only for ints and not for the other basic types?
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Open directory dialog
...e will be saved. I know that in WPF I should use the OpenFileDialog from Win32, but unfortunately the dialog requires file(s) to be selected - it stays open if I simply click OK without choosing one. I could "hack up" the functionality by letting the user pick a file and then strip the path to fig...
Git Bash is extremely slow on Windows 7 x64
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shoelzershoelzer
10.2k22 gold badges2626 silver badges4646 bronze badges
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How do I choose between Semaphore and SemaphoreSlim?
...states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa?
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Version of Apache installed on a Debian machine
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Worked fine on Red Hat Enterprise Linux 6 (64-bit)
– DemiSheep
Jan 26 '16 at 16:49
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show 6 more comments
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Storing sex (gender) in database
...ro to 255)
INT 4 - 2,147,483,648 to 2,147,483,647
BIT 1 (2 if 9+ columns) 2 (0 and 1)
CHAR(1) 1 26 if case insensitive, 52 otherwise
The BIT data type can be ruled out because it only supports two possible genders which is inadequate. While...
Base64 encoding and decoding in client-side Javascript
...s, adds the &0xff fix from Yaroslav, eliminates trailing nulls, plus a bit of code golf.
decodeBase64 = function(s) {
var e={},i,b=0,c,x,l=0,a,r='',w=String.fromCharCode,L=s.length;
var A="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
for(i=0;i<64;i++){e[A.ch...
What's the difference between deque and list STL containers?
...amortized constant?
– Lazer
Apr 15 '10 at 7:35
16
Operations in the long term behave as described...