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How to get first character of string?
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What you want is charAt.
var x = 'so<em>mem>e string';
alert(x.charAt(0)); // alerts 's'
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What is the difference between up-casting and down-casting with respect to class variable
... a type check and can throw a ClassCastException.
In your case, a cast fro<em>mem> a Dog to an Ani<em>mem>al is an upcast, because a Dog is-a Ani<em>mem>al. In general, you can upcast whenever there is an is-a relationship between two classes.
Downcasting would be so<em>mem>ething like this:
Ani<em>mem>al ani<em>mem>al = new Dog();
Dog c...
How do I <em>mem>odify the URL without reloading the page?
Is there a way I can <em>mem>odify the URL of the current page without reloading the page?
18 Answers
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Git Sy<em>mem>links in Windows
Our developers use a <em>mem>ix of Windows and Unix based OS's. Therefore, sy<em>mem>links created on Unix <em>mem>achines beco<em>mem>e a proble<em>mem> for Windows developers. In windows (<em>mem>sysgit), the sy<em>mem>link is converted to a text file with a path to the file it points to. Instead, I'd like to convert the sy<em>mem>link into an actual W...
Prevent double sub<em>mem>ission of for<em>mem>s in jQuery
I have a for<em>mem> that takes a little while for the server to process. I need to ensure that the user waits and does not atte<em>mem>pt to resub<em>mem>it the for<em>mem> by clicking the button again. I tried using the following jQuery code:
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Si<em>mem>ulate delayed and dropped packets on Linux
I would like to si<em>mem>ulate packet delay and loss for UDP and TCP on Linux to <em>mem>easure the perfor<em>mem>ance of an application. Is there a si<em>mem>ple way to do this?
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How do I edit an incorrect co<em>mem><em>mem>it <em>mem>essage in git ( that I've pushed )?
I want to <em>mem>odify a co<em>mem><em>mem>it <em>mem>essage deeper in history and I've pushed <em>mem>any new co<em>mem><em>mem>its.
7 Answers
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Spring JPA @Query with LIKE
I'<em>mem> trying to <em>mem>ake a <em>mem>ethod in CrudRepository that will be able to give <em>mem>e list of users, whose userna<em>mem>es are LIKE the input para<em>mem>eter(not only begin with, but also contains it). I tried to use <em>mem>ethod "findUserByUserna<em>mem>eLike(@Para<em>mem>("userna<em>mem>e") String userna<em>mem>e)" but as it is told in Spring docu<em>mem>ent...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...nstead supports RAII: "Resource Acquisition Is Initialization" -- a poor na<em>mem>e† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has auto<em>mem>atic storage duration, the object's destructor will be called when the block in whi...
How to highlight and color gdb output during interactive debugging?
Please don't reply I should use ddd, ne<em>mem>iver, e<em>mem>acs, vi<em>mem>, or any other front-end, I just prefer gdb as it is, but would like to see its output with so<em>mem>e ter<em>mem>inal colors.
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