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Regex - how to match everything except a particular pattern
...to an error. See this for an example. What the page doesn't say is that it converted /(ac|bd)/ into /(a[^c]?|b[^d]?|[^ab])/. The conversion from a DFA back to a regular expression is not trivial. It is easier if you can use the regular expression unchanged and change the semantics in code, like sugg...
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...
Python (and Python C API): __new__ versus __init__
...xample, say you wanted to create a subclass of tuple that can contain only integral values between 0 and size.
class ModularTuple(tuple):
def __new__(cls, tup, size=100):
tup = (int(x) % size for x in tup)
return super(ModularTuple, cls).__new__(cls, tup)
You simply can't do t...
How Do I Get the Query Builder to Output Its Raw SQL Query as a String?
...actual question into consideration, you could actually do the following to convert the current single query instead of all previous queries:
$sql = $query->toSql();
$bindings = $query->getBindings();
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How to generate random number in Bash?
...
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.
...
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...
git command to move a folder inside another
...
If git converts line endings, this results in the problem described by @Bart. For this to work you have to do the following: git config --global core.autocrlf false
– Mariano Dupont
Dec 16 '16 ...
Node.js get file extension
...pe to an extension will get you the file extension :).
Restify BodyParser converts this header in to a property with name type
File {
domain:
Domain {
domain: null,
_events: { .... },
_eventsCount: 1,
_maxListeners: undefined,
members: [ ... ] },
_events: {},
_ev...
Get the new record primary key ID from MySQL insert query?
... document (Code, Title, Body)
VALUES (
sha1( concat (convert ( now() , char), ' ', getAutoincrementalNextval ('document') ) ),
'Title',
'Body'
);
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