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How to duplicate a git repository? (without forking)
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answered May 26 '13 at 18:41
Larry KLarry K
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How to change column datatype from character to numeric in PostgreSQL 8.4
...ending on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presales alter column code type numeric(10,0) using cast(code as numeric);
This will fail if you have anything in code that cannot be cast to nu...
How to determine if Javascript array contains an object with an attribute that equals a given value?
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2018 edit: This answer is from 2011, before browsers had widely supported array filtering methods and arrow functions. Have a look at CAFxX's answer.
There is no "magic" way to check for something in an array without a loop. E...
Why would a post-build step (xcopy) occasionally exit with code 2 in a TeamCity build?
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147
Even if you provide the /Y switch with xcopy, you'll still get an error when xcopy doesn't kno...
Combine two ActiveRecord::Relation objects
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edited Jul 8 '19 at 6:08
answered Mar 2 '12 at 21:55
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Spring: how do I inject an HttpServletRequest into a request-scoped bean?
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115
Request-scoped beans can be autowired with the request object.
private @Autowired HttpServlet...
How to overload std::swap()
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135
The right way to overload swap is to write it in the same namespace as what you're swapping, s...
Set a default parameter value for a JavaScript function
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From ES6/ES2015, default parameters are in the language specification.
function read_file(file, delete_after = false) {
// Code
}
just works.
Reference: Default Parameters - MDN
Default function parameters allow formal parameter...
What is Python buffer type for?
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146
An example usage:
>>> s = 'Hello world'
>>> t = buffer(s, 6, 5)
>>>...
WITH (NOLOCK) vs SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
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106
They are the same thing. If you use the set transaction isolation level statement, it will app...