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Polymorphism vs Overriding vs Overloading
...ften one of its ancestor classes. For example, in Java all classes inherit from Object. Therefore, you can create a variable of type Object and assign to it an instance of any class.
An override is a type of function which occurs in a class which inherits from another class. An override function "r...
How do I convert NSInteger to NSString datatype?
...nk that for some situation this will be also interesting way to get string from NSInteger
NSInteger value = 12;
NSString * string = [NSString stringWithFormat:@"%0.0f", (float)value];
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Is there an equivalent for the Zip function in Clojure Core or Contrib?
...anything. and the inputs do not need to be the same type. map creates seqs from them and then maps the seqs so any seq'able input will work fine.
(map list '(1 2 3) '(4 5 6))
(map list [1 2 3] '(4 5 6))
(map hash-map '(1 2 3) '(4 5 6))
(map hash-set '(1 2 3) '(4 5 6))
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jQuery AJAX submit form
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You can use the ajaxForm/ajaxSubmit functions from Ajax Form Plugin or the jQuery serialize function.
AjaxForm:
$("#theForm").ajaxForm({url: 'server.php', type: 'post'})
or
$("#theForm").ajaxSubmit({url: 'server.php', type: 'post'})
ajaxForm will send when the sub...
What is a wrapper class?
... class or component. These are useful by providing a level of abstraction from the implementation of the underlying class or component; for example, wrapper classes that wrap COM components can manage the process of invoking the COM component without bothering the calling code with it. They can al...
How do you convert an entire directory with ffmpeg?
... would like to replace the string "x265" with "x264" if you're transcoding from H.265 to H.264 which is a common use case. for f in *.mkv; do ffmpeg -i "$f" -map 0 -movflags faststart -c:v libx264 -c:a copy -c:s copy "${f/x265/x264}"; done
– Travis Runyard
De...
java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger for JUnit test case for Java mail
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Good point @GlenPeterson, I didn't realise that from the solution above but when I looked into the com.sun.mail jar the javax.mail api is included in it.
– Peter
Jun 17 '16 at 19:10
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Split string to equal length substrings in Java
...The enclosing lookbehind matches the position that's four characters along from the end of the last match.
Both lookbehind and \G are advanced regex features, not supported by all flavors. Furthermore, \G is not implemented consistently across the flavors that do support it. This trick will work ...
how to check the jdk version used to compile a .class file [duplicate]
...ws:
javap -verbose MyClass | findstr "major"
You want the major version from the results. Here are some example values:
Java 1.2 uses major version 46
Java 1.3 uses major version 47
Java 1.4 uses major version 48
Java 5 uses major version 49
Java 6 uses major version 50
Java 7 uses major versio...
Change MySQL default character set to UTF-8 in my.cnf?
...o long; max key length is 767 bytes.). If possible, reduce the column size from 255 to 191 (because 191 * 4 = 764 < 767 < 192 * 4 = 768). After that, the table can be converted.
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