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Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...tp://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
>
<!-- Config here. -->
</web-app>
Or, in case you're not on Servlet 3.0+ yet (e.g. Tomcat 6 or older), then remove the @WebServlet annotation.
package com.example;
public cl...
Javascript checkbox onChange
...hen I can suggest the following:
NOTE: I made some assumption here
$('#my_checkbox').click(function(){
if($(this).is(':checked')){
$('input[name="totalCost"]').val(10);
} else {
calculate();
}
});
...
How to go back (ctrl+z) in vi/vim
... Ctrl+R to redo it).
Read more about it at: http://vim.wikia.com/wiki/Undo_and_Redo
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What is RSS and VSZ in Linux memory management
...thods mentioned at: Memory usage of current process in C
main.c
#define _GNU_SOURCE
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
typedef struct {
unsign...
Different types of thread-safe Sets in Java
...e look up time would be O(lg n) and not O(n).
– akhil_mittal
Dec 28 '17 at 4:58
...
How to copy files across computers using SSH and MAC OS X Terminal [closed]
...compression use SCP:
scp username@yourserver.com:~/serverpath/public_html ~/Desktop
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Regular Expression to match only alphabetic characters
...l make sure that nothing but these alphabets will be matched.
Code:
preg_match('/^[A-Z]+$/i', "abcAbc^Xyz", $m);
var_dump($m);
Output:
array(0) {
}
Test case is for OP's comment that he wants to match only if there are 1 or more alphabets present in the input. As you can see in the test case...
Get Image Height and Width as integer values?
...
Try like this:
list($width, $height) = getimagesize('path_to_image');
Make sure that:
You specify the correct image path there
The image has read access
Chmod image dir to 755
Also try to prefix path with $_SERVER["DOCUMENT_ROOT"], this helps sometimes when you are not ab...
warning: incompatible implicit declaration of built-in function ‘xyz’
...an page says this function is a GNU extension and synopsis shows:
#define _GNU_SOURCE
#include <string.h>
When #define is added to my source before the #include, declarations for the GNU extensions are made visible and warnings disappear.
...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...ave private methods/functions and properties:
(function() {
var private_var;
function private_function() {
//code
}
})();
In the first example, you would explicitly invoke globalFunction by name to run it. That is, you would just do globalFunction() to run it. But in the above exam...