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How can I check if a single character appears in a string?
...in B's code. Naturally the API needs to do a loop after all a String is an array of characters wrapped up in a nice class with lots of useful methods.
– mP.
Feb 5 '09 at 2:55
5
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How can I generate an MD5 hash?
...
If you actually want the answer back as a string as opposed to a byte array, you could always do something like this:
String plaintext = "your text here";
MessageDigest m = MessageDigest.getInstance("MD5");
m.reset();
m.update(plaintext.getBytes());
byte[] digest = m.digest();
BigInteger bigIn...
Type List vs type ArrayList in Java [duplicate]
...
Almost always List is preferred over ArrayList because, for instance, List can be translated into a LinkedList without affecting the rest of the codebase.
If one used ArrayList instead of List, it's hard to change the ArrayList implementation into a LinkedList ...
Get list of JSON objects with Spring RestTemplate
...ist<Object> findAllObjects() {
List<Object> objects = new ArrayList<Object>();
return objects;
}
ResponseEntity is an extension of HttpEntity that adds a HttpStatus status code. Used in RestTemplate as well @Controller methods.
In RestTemplate this class is returned by g...
jQuery UI Sortable Position
...ext/javascript">
var sortable = new Object();
sortable.s1 = new Array(1, 2, 3, 4, 5);
sortable.s2 = new Array(1, 2, 3, 4, 5);
sortable.s3 = new Array(1, 2, 3, 4, 5);
sortable.s4 = new Array(1, 2, 3, 4, 5);
sortable.s5 = new Array(1, 2, 3, 4, 5);
sortingExample();
functio...
Download File to server from URL
... using cURL
set_time_limit(0); // unlimited max execution time
$options = array(
CURLOPT_FILE => '/path/to/download/the/file/to.zip',
CURLOPT_TIMEOUT => 28800, // set this to 8 hours so we dont timeout on big files
CURLOPT_URL => 'http://remoteserver.com/path/to/big/file.zip'...
What is the difference between Ruby 1.8 and Ruby 1.9
...(main):001:0> {1,2}
=> {1=>2}
Action: Convert to {1 => 2}
Array.to_s Now Contains Punctuation
Ruby 1.9
irb(main):001:0> [1,2,3].to_s
=> "[1, 2, 3]"
Ruby 1.8.6
irb(main):001:0> [1,2,3].to_s
=> "123"
Action: Use .join instead
Colon No Longer Valid In When Stateme...
How do I obtain the frequencies of each value in an FFT?
I have an FFT result. These are stored in two double arrays: a real part array and an imaginary part array. How do I determine the frequencies that correspond to each element in these arrays?
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How to execute a JavaScript function when I have its name as a string
...on executeFunctionByName(functionName, context /*, args */) {
var args = Array.prototype.slice.call(arguments, 2);
var namespaces = functionName.split(".");
var func = namespaces.pop();
for(var i = 0; i < namespaces.length; i++) {
context = context[namespaces[i]];
}
return context...
Set “this” variable easily?
...slightly different method apply, which takes the function parameters as an array:
myFunction.apply(obj, [arg1, arg2, ...]);
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