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When is it better to use an NSSet over an NSArray?
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When the order of the items in the collection is not important, sets offer better performance for finding items in the collection.
The reason is that a set uses hash values to find items (like a dictionary) while an array has to iterate over its entire contents to f...
What are the best Haskell libraries to operationalize a program? [closed]
If I'm going to put a program into production, there are several things I need that program to do in order to consider it "operationalized" – that is, running and maintainable in a measurable and verifiable way by both engineers and operations staff. For my purposes, an operationalized program mus...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
... configure and troubleshoot <p:fileUpload> depends on PrimeFaces version.
All PrimeFaces versions
The below requirements apply to all PrimeFaces versions:
The enctype attribute of the <h:form> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work,...
#ifdef #ifndef in Java
I doubt if there is a way to make compile-time conditions in Java like #ifdef #ifndef in C++.
8 Answers
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How do I run a spring boot executable jar in a Production environment?
...rtifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
</configuration>
</plugin>
For Gradle add the following snippet to your build.gradle:
springBoot {
executable = true
}
The fully executable ja...
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What's the difference between “ ” and “ ”?
...ce, which is used when you don't want an automatic line break at that position. The regular space has the character code 32, while the non-breaking space has the character code 160.
For example when you display numbers with space as thousands separator: 1 234 567, then you use non-breaking spaces s...
What's the right way to pass form element state to sibling/parent elements?
I've come up with two solutions, but neither of them feels quite right.
10 Answers
10
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Gray out image with CSS?
...ar "grayed out" with CSS (i.e., without loading a separate, grayed out version of the image)?
9 Answers
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Xcode debugging - displaying images
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EDIT:
As of Xcode 5, the debugger can show you the visual representation of UIImage/CGImageRef variables!
Xcode itself can't do it. I don't know about external tools.
What i'm doing to test images while debugging is to convert that raw data into an image-file format, like .png, and then savi...