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Ternary operator is twice as slow as an if-else block?
...ations; x++)
00000090 FF C1 inc ecx
00000092 41 3B CC cmp ecx,r12d
00000095 7C C9 jl 0000000000000060
X64, ternary
59: foreach (int i in array)
00000044 4C 8B 4F 08 mov r9,qword ptr [rdi+8] ...
VideoRecorder 拓展：前台预览录制 + 后台无预览录制，支持分辨率、码率设...
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ping response “Request timed out.” vs “Destination Host unreachable”
... IP address >: Destination Host Unreachable," then the routing problem occurred at a remote router, whose address is indicated by the "< IP address >" field.
Request Timed Out
This message indicates that no Echo Reply messages were received within the default time of 1 second. This can be...
iOS start Background Thread
...
Enable NSZombieEnabled to know which object is being released and then accessed.
Then check if the getResultSetFromDB: has anything to do with that. Also check if docids has anything inside and if it is being retained.
This way you can be sure there is nothing wrong.
...
How can I see the assembly code for a C++ program?
...isting, and -ah adds "high-level source" listing):
g++ -g -c -Wa,-alh foo.cc
For Visual Studio, use /FAsc.
Peek into the binary
If you have compiled binary,
use objdump -d a.out on UNIX (also works for cygwin),
dumpbin /DISASM foo.exe on Windows.
Use your debugger
Debuggers could also sho...
How to debug Lock wait timeout exceeded on MySQL?
In my production error logs I occasionally see:
11 Answers
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WheelView 拓展：滚轮选择框扩展，滚轮日历选择框和旋转日历扩展 · App In...
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Efficiently replace all accented characters in a string?
...e Unicode standard, taken from here: http://semplicewebsites.com/removing-accents-javascript
var Latinise={};Latinise.latin_map={"Á":"A",
"Ă":"A",
"Ắ":"A",
"Ặ":"A",
"Ằ":"A",
"Ẳ":"A",
"Ẵ":"A",
"Ǎ":"A",
"Â":"A",
"Ấ":"A",
"Ậ":"A",
"Ầ":"A",
"Ẩ":"A",
"Ẫ":"A",
"Ä":"A",
"Ǟ":"A",
...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
..., the empty tree SHA1.
git log --pretty=raw
commit 9ed4ff9ac204f20f826ddacc3f85ef7186d6cc14
tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904 <====
author VonC <vonc@laposte.net> 1381232247 +0200
committer VonC <vonc@laposte.net> 1381232247 +0200
initial empty commit
To show...
How do I change the background color with JavaScript?
...y the server, you would have to poll the server and then change the color accordingly.
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