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Matching a space in regex
...preceding or following spaces.
For PHP specifically, this page may help.
From your edit, it appears you want to remove all non valid characters The start of this is (note the space inside the regex):
$newtag = preg_replace ("/[^a-zA-Z0-9 ]/", "", $tag);
# ^ spac...
getActivity() returns null in Fragment function
...s. The onAttach call is where the Fragment is attached to its activity and from this point getActivity() will return non-null (nb there is also an onDetach() call).
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Storing Python dictionaries
...o write to a file:
import json
myfile.write(json.dumps(mydict))
To read from a file:
import json
mydict = json.loads(myfile.read())
myfile is the file object for the file that you stored the dict in.
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node and Error: EMFILE, too many open files
...fs doesn't work... or you just want to understand where the leak is coming from. Follow this process.
(e.g. graceful-fs isn't gonna fix your wagon if your issue is with sockets.)
From My Blog Article: http://www.blakerobertson.com/devlog/2014/1/11/how-to-determine-whats-causing-error-connect-emfile...
How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
..., each instance of a ## preprocessing token
in the replacement list (not from an argument) is deleted and the preceding preprocessing
token is concatenated with the following preprocessing token.
So, the replacement list contains x followed by ## and also ## followed by y; so we have:
mine ##...
Options for initializing a string array [duplicate]
...[] myString = new string[4];
myString[0] = "string1"; // etc.
Advanced:
From a List
list<string> = new list<string>();
//... read this in from somewhere
string[] myString = list.ToArray();
From StringCollection
StringCollection sc = new StringCollection();
/// read in from file o...
Extracting double-digit months and days from a Python date [duplicate]
Is there a way to extract month and day using isoformats? Lets assume today's date is March 8, 2013.
2 Answers
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How to update a mongo record using Rogue with MongoCaseClassField when case class contains a scala E
I am upgrading existing code from Rogue 1.1.8 to 2.0.0 and lift-mongodb-record from 2.4-M5 to 2.5 .
1 Answer
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How to Generate unique file names in C#
...s" is predictable and not thread-safe (as the same 'ticks' can be obtained from multiple threads/processes). This makes it not suitable for temp filename generation. Generating X..1..N may be suitable for user-facing tasks (ie. copy in Explorer), but is dubious for server work.
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Manually adding a Userscript to Google Chrome
...sily manage them. Also it makes it easier to install userscripts directly from sites like OpenUserJS, MonkeyGuts, etc.
Finally, it unlocks most all of the GM functionality that you don't get by installing a GM script directly with Chrome. That is, more of what GM on Firefox can do, is available w...