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Fast way to discover the row count of a table in PostgreSQL
...IN pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = 'mytable'
AND n.nspname = 'myschema'
Or better still
SELECT reltuples::bigint AS estimate
FROM pg_class
WHERE oid = 'myschema.mytable'::regclass;
Faster, simpler, safer, more elegant. See the manual on Object Identifier Type...
Git ignore file for Xcode projects
...iles, potentially corrupting our live projects. This IMHO is unacceptable, and I've now started logging bugs against it each time they do so. I know they don't care, but maybe it'll shame one of them into treating developers more fairly.
If you need to customize, here's a gist you can fork: https...
Is there a limit to the length of HTML attributes?
... So the answer should be "unlimited" then?
– Anders Lindén
Aug 11 '15 at 14:41
2
Thank y...
Conveniently map between enum and int / String
...t(byte num) {
return map.get(num);
}
}
This solution is nice and doesn't require 'fiddling with reflection' because it's based on the fact that all enum types implicitly inherit the Enum interface.
share
...
filters on ng-model in an input
I have a text input and I don't want to allow users to use spaces, and everything typed will be turned into lowercase.
8 An...
When should use Readonly and Get only properties
In a .NET application when should I use "ReadOnly" properties and when should I use just "Get". What is the difference between these two.
...
What is the purpose of XORing a register with itself? [duplicate]
...t is more efficient.
The opcode is shorter than mov eax, 0, only 2 bytes, and the processor recognizes the special case and treats it as a mov eax, 0 without a false read dependency on eax, so the execution time is the same.
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input type=“submit” Vs button tag are they interchangeable?
input type="submit" and button tag are they interchangeable? or if there is any difference then When to use input type="submit" and when button ?
...
Use of Initializers vs Constructors in Java
So I've been brushing up on my Java skills as of late and have found a few bits of functionality that I didn't know about previously. Static and Instance Initializers are two such techniques.
...
Vertically centering Bootstrap modal window
...
This does the job : http://jsfiddle.net/sRmLV/1140/
It uses a helper-div and some custom css. No javascript or jQuery required.
HTML (based on Bootstrap's demo-code)
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
<!-- ...