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How to create a memory leak in Java?
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String str=readString(); // read lengthy string any source db,textbox/jsp etc..
// This will place the string in memory pool from which you can't remove
str.intern();
(Unclosed) open streams ( file , network etc... )
try {
BufferedReader br = new BufferedReader(new FileReader(inputFile));
...
Get the current script file name
...ur url using different filers, like mysql_real_escape_string, stripslashes etc..
– Khandad Niazi
Jan 29 '14 at 15:43
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Match two strings in one line with grep
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To search for files containing all the words in any order anywhere:
grep -ril \'action\' | xargs grep -il \'model\' | xargs grep -il \'view_type\'
The first grep kicks off a recursive search (r), ignoring case (i) and listing (printing out) the name of the files that are ma...
How is an overloaded method chosen when a parameter is the literal null value?
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You can assign a string to a null value so it is valid and the order for java and most programming languages is fit to the closest type and then to object.
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Have the same README both in Markdown and reStructuredText
... on GitHub. For this I have written my README using the Markdown syntax in order to have it nicely formatted on GitHub.
8 A...
How do I generate random integers within a specific range in Java?
...le value in the range [0,1). Notice this range does not include the 1.
In order to get a specific range of values first, you need to multiply by the magnitude of the range of values you want covered.
Math.random() * ( Max - Min )
This returns a value in the range [0,Max-Min), where 'Max-Min' is...
How to merge two arrays in JavaScript and de-duplicate items
...var array3 = array1.concat(array2).unique();
This will also preserve the order of the arrays (i.e, no sorting needed).
Since many people are annoyed about prototype augmentation of Array.prototype and for in loops, here is a less invasive way to use it:
function arrayUnique(array) {
var a = ar...
How to split a sequence into two pieces by predicate?
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Exactly what I was looking for. When the list is ordered by a related criterion, this makes a lot more sense.
– erich2k8
Apr 10 '13 at 3:56
add a com...
How to efficiently build a tree from a flat structure?
...ntID property so they can be arranged in trees. They are in no particular order.
Each ParentID property does not necessarily matches with an ID in the structure. Therefore their could be several trees emerging from these objects.
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How do I get the parent directory in Python?
...h Pathlib.
Navigating inside a directory tree:
>>> p = Path('/etc')
>>> q = p / 'init.d' / 'reboot'
>>> q
PosixPath('/etc/init.d/reboot')
>>> q.resolve()
PosixPath('/etc/rc.d/init.d/halt')
Querying path properties:
>>> q.exists()
True
>>>...