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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
...oking at the documentation, I hardly see any big difference. Both "value" and "object" are of type id , so can be any object. Key is once a string, and in the other case an id. One of them seems to retain the object, and the other don't. What else? Which one is for what case?
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How do I use the lines of a file as arguments of a command?
...ers), a shortcut for $(cat afile) is $(< afile), so you'd write:
mycommand "$(< file.txt)"
Documented in the bash man page in the 'Command Substitution' section.
Alterately, have your command read from stdin, so: mycommand < file.txt
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CocoaPods - use specific pod version
... app. I have compilation errors with AFNetworking (current version, 1.2.1) and saw that these didn't exist in the previous version (1.2.0).
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Loader lock error
...g -> Exceptions, open the Managed Debugging Assistants, find LoaderLock and uncheck
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How do I run a spring boot executable jar in a Production environment?
...ing Boot 1.3.0.M1, you are able to build fully executable jars using Maven and Gradle.
For Maven, just include the following in your pom.xml:
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<config...
Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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Get notified when UITableView has finished asking for data?
...asking for data?
I've been playing with this problem for a couple of days and think that subclassing UITableView's reloadData is the best approach :
- (void)reloadData {
NSLog(@"BEGIN reloadData");
[super reloadData];
NSLog(@"END reloadData");
}
reloadData doesn't end before the ...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...onnection to be "enlisted" in a transaction? Does it simply mean that commands I execute on the connection will participate in the transaction?
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django templates: include and extends
..., dependent on a parent template. Django will look at your child template and use its content to populate the parent.
Everything that you want to use in a child template should be within blocks, which Django uses to populate the parent. If you want use an include statement in that child template,...
When to make a type non-movable in C++11?
...x objects. If std::mutex contained a native OS mutex type as a data member and the native type's address must stay fixed (because the OS maintains a list of pointers to its mutexes) then either std::mutex would have to store the native mutex type on the heap so it would stay at the same location whe...