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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...ABLE `foo` (
`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`u` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `u` (`u`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=latin1
mysql> insert into foo (u) values (10) on duplicate key update u = 20;
mysql> select * from foo;
+-...
How to go to each directory and execute a command?
...
110
You can do the following, when your current directory is parent_directory:
for d in [0-9][0-9...
Removing all non-numeric characters from string in Python
...
11
I like that this approach doesn't require pulling in re, for this simple function.
– triunenature
Ma...
xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false...
...false”(性能警告) 1>C: Program Files (x86) Microsoft Visual Studio 11.0 VC include xtree(1796): warning C4800: int: 将值强制为布尔值true或f...1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
...g literals.
Reference
http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.3
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c++11 Return value optimization or move? [duplicate]
...nguage rules.
– Kerrek SB
Apr 21 at 11:33
GCC documentation on -fno-elide-constructors: "The C++ standard allows an im...
RegEx to parse or validate Base64 data
...nce 9d a9 9e.
– Marten
Jun 9 '16 at 11:50
3
^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z...
Files showing as modified directly after a Git clone
...|
edited Apr 23 '19 at 20:11
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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Adb Devices can't find my phone [closed]
... Pang
8,2181717 gold badges7373 silver badges111111 bronze badges
answered Sep 15 '11 at 19:22
j2emanuej2emanue
47.4k4242 g...
Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
...XXX'
pid: 1658, tid: 13086 >>> system_server <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 64696f7e
r0 00000000 r1 00000001 r2 ad12d1e8 r3 7373654d
r4 64696f72 r5 00000406 r6 00974130 r7 40d14008
r8 4b857b88 r9 4685adb4 10 00974130 fp 4b857ed8
ip 00000000 ...