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How do you access the matched groups in a JavaScript regular expression?
I want to match a portion of a string using a regular expression and then access that parenthesized substring:
22 Answers...
Usage of __slots__?
What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not?
11 A...
How to retrieve POST query parameters?
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Things have changed once again starting Express 4.16.0, you can now use express.json() and express.urlencoded() just like in Express 3.0.
This was different starting Express 4.0 to 4.15:
$ npm install --save body-parser
and...
Failed to locate the winutils binary in the hadoop binary path
I am getting the following error while starting namenode for latest hadoop-2.2 release. I didn't find winutils exe file in hadoop bin folder. I tried below commands
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
I want to be able to connect to a PostgreSQL database and find all of the functions for a particular schema.
9 Answers
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Function to Calculate Median in SQL Server
According to MSDN , Median is not available as an aggregate function in Transact-SQL. However, I would like to find out whether it is possible to create this functionality (using the Create Aggregate function, user defined function, or some other method).
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Replace multiple characters in one replace call
....replace(/[#_]/g,'');
Fiddle
If you want to replace the hash with one thing and the underscore with another, then you will just have to chain. However, you could add a prototype:
String.prototype.allReplace = function(obj) {
var retStr = this;
for (var x in obj) {
retStr = retStr...
PyPy — How can it possibly beat CPython?
...sible?
Manual memory management (which is what CPython does with its counting) can be slower than automatic management in some cases.
Limitations in the implementation of the CPython interpreter preclude certain optimisations that PyPy can do (eg. fine grained locks).
As Marcelo mentioned, the J...
How can I exclude all “permission denied” messages from “find”?
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Note:
* This answer probably goes deeper than the use case warrants, and find 2>/dev/null may be good enough in many situations. It may still be of interest for a cross-platform perspective and for its discussion of some advanced shell techniques in the interest of finding a solution that is as ...
How to make completely transparent navigation bar in iOS 7
I want the UINavigationBar in my app to be completely transparent and flush with the viewcontroller directly under it. However, the only code I could find makes it translucent but not transparent. I know this can be done in iOS 7 because it is used in the notes app. My question is, what is the code ...