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How can I lock a file using java (if possible)
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this one looked good, but it doesn't work. I get the OverlappingFileLockException every time, even when the file didn't even exsist
– Gavriel
Feb 5 '15 at 10:11
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jQuery Validate - Enable validation for hidden fields
...equired that .setDefaults() be within the document.ready function)
OR for one specific form:
$(document).ready(function() {
$('#myform').validate({
ignore: [],
// any other options and/or rules
});
});
EDIT:
See this answer for how to enable validation on some hidden...
MySQL Cannot Add Foreign Key Constraint
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Was caused by a different collation on the tables for me, one was UTF-8 and the other was latin1.
– ug_
Jul 23 '15 at 22:01
7
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Should I put #! (shebang) in Python scripts, and what form should it take?
...in any script determines the script's ability to be executed like a standalone executable without typing python beforehand in the terminal or when double clicking it in a file manager (when configured properly). It isn't necessary but generally put there so when someone sees the file opened in an ed...
Merge 2 arrays of objects
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If you want to merge 2 arrays of objects in JavaScript. You can use this one line trick
Array.prototype.push.apply(arr1,arr2);
For Example
var arr1 = [{name: "lang", value: "English"},{name: "age", value: "18"}];
var arr2 = [{name : "childs", value: '5'}, {name: "lang", value: "German"}];
Ar...
How to create GUID / UUID?
...IDs must be of the form "xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx", where x is one of [0-9, a-f] M is one of [1-5], and N is [8, 9, a, or b]
Use of a low-quality source of randomness (such as Math.random)
Thus, developers writing code for production environments are encouraged to use a rigorous, well-...
Logical Operators, || or OR?
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There is no "better" but the more common one is ||. They have different precedence and || would work like one would expect normally.
See also: Logical operators (the following example is taken from there):
// The result of the expression (false || true) is assigne...
How do you add a Dictionary of items into another Dictionary
Arrays in Swift support the += operator to add the contents of one Array to another. Is there an easy way to do that for a dictionary?
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Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
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I noticed one time in an old script that PHP would maintain the "as" variable as in scope even after my foreach loop. For example,
foreach($users as $user){
$user->doSomething();
}
var_dump($user); // would output the data from t...
Building a fat jar using maven
...After configuring this plug-in, running mvn package will produce two jars: one containing just the project classes, and a second fat jar with all dependencies with the suffix "-jar-with-dependencies".
if you want correct classpath setup at runtime then also add following plugin
<plugin>
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