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Retrieve only the queried element in an object array in MongoDB collection
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How do I force Postgres to use a particular index?
...The reasons are basically that it's a performance hack that tends to cause more problems later down the line as your data changes, whereas PostgreSQL's optimizer can re-evaluate the plan based on the statistics. In other words, what might be a good query plan today probably won't be a good query pla...
Installing PIL with pip
...Pillow is based on the PIL code, and has evolved into a better, modern and more friendly version of PIL.
– GiriB
Sep 15 '15 at 14:15
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How to convert java.util.Date to java.sql.Date?
...classes such as java.util.Date, Calendar, & SimpleDateFormat.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
You may exchan...
Installing Apple's Network Link Conditioner Tool
...onal download. Use this menu item:
Xcode > Open Developer Tool > More Developer Tools...
and get "Hardware IO Tools for Xcode".
For Xcode 8+, get "Additional Tools for Xcode [version]".
Double-click on a .prefPane file to install. If you already have an older .prefPane installed, you'l...
Is a Python dictionary an example of a hash table?
...1, in <module>
TypeError: list objects are unhashable
You can read more about hash tables or check how it has been implemented in python and why it is implemented that way.
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What is an optional value in Swift?
...ated value. The type of an optional String isn't String, it's Optional, or more precisely Optional<String>.
Everything Swift does with optionals is magic to make reading and writing code more fluent. Unfortunately this obscures the way it actually works. I'll go through some of the tricks late...
Making an array of integers in iOS
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python exception message capturing
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UILabel - auto-size label to fit text?
... lineBreakMode]];
return expectedLabelSize.width;
}
@end
You could more simply use the sizeToFit method available from the UIView class, but set the number of lines to 1 to be safe.
iOS 6 update
If you are using AutoLayout, then you have a built in solution. By setting the number of line...