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Chrome Development Tool: [VM] file from javascript
...kept the answer in its current state to not invalidate the question. The latest codesearch link is: cs.chromium.org/%22VM%5C%22%20+%22 (direct link to search result in case the value changes again: chromium.googlesource.com/chromium/blink/+/…)
– Rob W
Jun 25 ...
Should I declare Jackson's ObjectMapper as a static field?
...
I've faced strange behaviors during unit/integration tests of a large enterprise application. When putting ObjectMapper as static final class attribute I started facing PermGen issues. Would anyone care to explain probable causes? I was using jackson-databind version 2.4.1.
...
How do I find if a string starts with another string in Ruby?
...re several methods presented here, I wanted to figure out which one was fastest. Using Ruby 1.9.3p362:
irb(main):001:0> require 'benchmark'
=> true
irb(main):002:0> Benchmark.realtime { 1.upto(10000000) { "foobar"[/\Afoo/] }}
=> 12.477248
irb(main):003:0> Benchmark.realtime { 1.upto(...
How to initialize log4j properly?
...l" projects you might want a quick-and-dirty solution, e.g. if you're just testing a new library.
If so a call to the static method
org.apache.log4j.BasicConfigurator.configure();
will setup basic logging to the console, and the error messages will be gone.
...
How to compare two strings in dot separated version format in Bash?
...]}))
then
return 2
fi
done
return 0
}
testvercomp () {
vercomp $1 $2
case $? in
0) op='=';;
1) op='>';;
2) op='<';;
esac
if [[ $op != $3 ]]
then
echo "FAIL: Expected '$3', Actual '$op', Arg1 '$1', Arg2 '$2...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...战
首先创建一个测试用的表：
CREATE TABLE IF NOT EXISTS `test`.`t` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`a` varchar(10) NOT NULL,
`b` varchar(10) NOT NULL,
PRIMARY KEY (`id`),
KEY `a_b` (`a`,`b`)
) ENGINE=InnoDB;
注：理论上HandlerSocket支持MyISAM...
access denied for load data infile in MySQL
...cribed by Yamir in his post I couldn't make it work.
The file was in /tmp/test.csv with 777 permissions. The MySQL user had file permissions, LOCAL option was not allowed by my MySQL version, so I was stuck.
Finally I was able to solve the problem by running:
sudo chown mysql:mysql /tmp/test.csv
...
Suppressing “is never used” and “is never assigned to” warnings in C#
...ress unused variables warnings in C# with bitwise operators:
uint test1 = 12345;
test1 |= 0; // test1 is still 12345
bool test2 = true;
test2 &= false; // test2 is now false
Both expressions don't produce unused variable warnings in VS2010 C# 4.0 and Mono 2.10...
How many database indexes is too many?
...t the combinations of searches that we allow. Otherwise you would have to test literally every combination for performance to ensure you did not have a lurking problem that someone will find one day. We have also implemented resource limits to stop this causing issues elsewhere in the application ...
Regex for quoted string with escaping quotes
...:[^"\\]|\\.)*"/
Works in The Regex Coach and PCRE Workbench.
Example of test in JavaScript:
var s = ' function(){ return " Is big \\"problem\\", \\no? "; }';
var m = s.match(/"(?:[^"\\]|\\.)*"/);
if (m != null)
alert(m);
...