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Connection pooling options with JDBC: DBCP vs C3P0
...operties.getProperty("testOnBorrow")));
poolDataSource.setValidationQuery("SELECT 0");
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Check if UIColor is dark or bright?
I need to determine whether a selected UIColor (picked by the user) is dark or bright, so I can change the color of a line of text that sits on top of that color, for better readability.
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Importance of varchar length in MySQL table
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Anytime your select query uses a temporary table (group and order by operations, among other things) it will convert varchar(200) to a char(200) and performance will suffer.
– Jamie
Feb 7 '13 at 20:1...
Eclipse - Unable to install breakpoint due to missing line number attributes
...eferences -> server -> runtime environments
Apache Tomcat -> edit
Select a JDK instead of JRE
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How to prettyprint a JSON file?
... end up with maps whose keys are u"some-key" (python unicode), which makes selecting fields more difficult and doesn't really go in the direction of pretty-printing.
You can also use jq:
jq . some.json
and you get colors as a bonus (and way easier extendability).
Addendum: There is some confusi...
Spring Boot: How can I set the logging level with application.properties?
...gure logging in a fine grained way. The --debug flag just switches on some selected Spring logging channels.
– Dave Syer
Dec 10 '13 at 7:54
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How do I programmatically change file permissions?
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selecting this one as I don't have the ability to use Marty Lamb's answer.
– Roy Rico
Mar 20 '09 at 0:44
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How do I find the .NET version?
...ersion,Release -EA 0 |
where { $_.PSChildName -match '^(?!S)\p{L}'} | select PSChildName, Version, Release
The last command (8) will give you all versions, including .NET 4.5.
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Can't use method return value in write context
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This is a much better answer than the one currently selected.
– SystemParadox
Sep 9 '11 at 14:20
20
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What's the Best Way to Shuffle an NSMutableArray?
...[self count];
for (uint i = 0; i < count - 1; ++i)
{
// Select a random element between i and end of array to swap with.
int nElements = count - i;
int n = arc4random_uniform(nElements) + i;
[self exchangeObjectAtIndex:i withObjectAtIndex:n];
}
}
@end
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