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How to check whether an object is a date?
... numbers. The method in this answer really tells you whether the value is convertible to a Date.
– bdukes
Jun 23 '15 at 20:44
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Difference between fprintf, printf and sprintf?
Can anyone explain in simple English about the differences between printf , fprintf , and sprintf with examples?
8 Ans...
How can I get the last 7 characters of a PHP string?
...$dynamicstring, -7);
From the php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
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Building a complete online payment gateway like Paypal [closed]
...TTPS, VPN or dedicated line. Ultimately the authorisation request will be converted to X25 protocol, which is the protocol used by these acquiring banks when communicating with each other.
In summary then: it all depends on your region.
Contact a major bank and try to get through to their card a...
Escaping HTML strings with jQuery
...
what's the guidance on converting \n to <br>?
– amwinter
Oct 18 '13 at 8:02
2
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Exception 'open failed: EACCES (Permission denied)' on Android
...are already in your manifest.
// Storage Permissions
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
/**
* Checks if the app has permissi...
How to redirect 404 errors to a page in ExpressJS?
...behave the same in your code but using res.json will do some magic in auto-converting objects to strings where .send() won't. Better safe than sorry. expressjs.com/api.html#res.json
– wgp
Dec 12 '14 at 18:54
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How to generate random number in Bash?
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Please see $RANDOM:
$RANDOM is an internal Bash function
(not a constant) that returns a
pseudorandom integer in the range
0 - 32767. It should not be used to
generate an encryption key.
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How to update a value, given a key in a hashmap?
Suppose we have a HashMap<String, Integer> in Java.
17 Answers
17
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Method Overloading for null argument
...sion of a method that's available (see JLS §15.12.2).
Object, char[] and Integer can all take null as a valid value. Therefore all 3 version are applicable, so Java will have to find the most specific one.
Since Object is the super-type of char[], the array version is more specific than the Objec...