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Scala vs. Groovy vs. Clojure [closed]
Can someone please explain the major differences between Scala, Groovy and Clojure. I know each of these compiles to run on the JVM but I'd like a simple comparison between them.
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What is the difference between the HashMap and Map objects in Java?
...ementation was using a HashMap (and that does happen), what I should have done was declare getThings and getMoreThings as just returning Map<String, Object> without being any more specific than that. In fact, barring a good reason to do something else, even within Foo I should probably declare...
Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.
...ng as a zero length file) as /tmp/mysql.sock or /var/mysql/mysql.sock, but one or more apps is looking in the other location for it. Find out with this command:
ls -l /tmp/mysql.sock /var/mysql/mysql.sock
Rather than move the socket, edit config files, and have to remember to keep edited files lo...
Get a filtered list of files in a directory
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Oh, I just noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben...
Understanding Spring @Autowired usage
...e to put this tag in your XML (application context file):
<context:component-scan base-package="com.mycompany.movies" />
This tag will do an auto-scanning. Assuming each class that has to become a bean is annotated with a correct annotation like @Component (for simple bean) or @Controller (...
Emulator error: This AVD's configuration is missing a kernel file
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I have done all possible way but its still there while launching simulator
– VISHNU GARG
Aug 15 '14 at 8:52
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How to get the connection String from a database
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If one uses the tool Linqpad, after one connects to a target database from the connections one can get a connection string to use.
Right click on the database connection.
Select Properties
Select Advanced
Select Copy Full Conn...
Is a GUID unique 100% of the time?
...in the right situation.
https://ericlippert.com/2012/04/24/guid-guide-part-one/
https://ericlippert.com/2012/04/30/guid-guide-part-two/
https://ericlippert.com/2012/05/07/guid-guide-part-three/
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How to run function in AngularJS controller on document ready?
...ope.$watch('$viewContentLoaded', function(){
//do something
});
This one is helpful when you want to manipulate the DOM elements. It will start executing only after all te elements are loaded.
UPD: What is said above works when you want to change css properties. However, sometimes it doesn't ...
How to run a shell script on a Unix console or Mac terminal?
...responsible for figuring out how to execte it. For non-binaries, this is done by looking at the first line of the file. It should contain a hashbang:
#! /usr/bin/env bash
The hashbang tells the kernel what program to run (in this case the command /usr/bin/env is ran with the argument bash). Th...