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Grep only the first match and stop
... two or more matched in the same line, all of them will be displayed.
You can use head -1 to solve this problem:
grep -o -a -m 1 -h -r "Pulsanti Operietur" /path/to/dir | head -1
explanation of each grep option:
-o, --only-matching, print only the matched part of the line (instead of the entire...
What does curly brackets in the `var { … } = …` statements do?
...d. This is unlike the var keyword, which defines a variable globally, or locally to an entire function regardless of block scope.
The second one is called destructuring:
Destructuring assignment makes it possible to extract data from arrays or objects using a syntax that mirrors the constructi...
Dispelling the UIImage imageNamed: FUD
...sister thread on the Apple Dev Forums received some better traffic. Specifically Rincewind added some authority.
There are issues in iPhone OS 2.x where the imageNamed: cache would not be cleared, even after a memory warning. At the same time +imageNamed: has gotten a lot of use not for the cache, ...
PHP foreach change original array values
...<= 0) {
$fields[$key]['value'] = "Some error";
}
}
So basically use $field when you need the values, and $fields[$key] when you need to change the data.
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Eager load polymorphic
...nable to build the join without additional information.
There is no table called reviewable
To solve this issue, you need to explicitly define the relationship between Review and Shop.
class Review < ActiveRecord::Base
belongs_to :user
belongs_to :reviewable, polymorphic: true
# For ...
How to change webservice url endpoint?
...'t understand what this could be). To change the service endpoint, you basically have two options.
Use the Binding Provider to set the endpoint URL
The first option is to change the BindingProvider.ENDPOINT_ADDRESS_PROPERTY property value of the BindingProvider (every proxy implements javax.xml.ws...
What does jQuery.fn mean?
...
Is this guaranteed to be true? Can I assume a call to jQuery.prototype is exactly the same as jQuery.fn? My worry is if jQuery does some magic when you call .fn then they aren't interchangeable
– Brandon
Feb 24 '12 a...
SQL Server SELECT into existing table
...to list them. It is good practice to always list them for readability and scalability purpose.
----Create testable
CREATE TABLE TestTable (FirstName VARCHAR(100), LastName VARCHAR(100))
----INSERT INTO TestTable using SELECT
INSERT INTO TestTable (FirstName, LastName)
SELECT FirstName, LastName
FRO...
How to perform OR condition in django queryset?
...dited Oct 26 '13 at 2:13
Mechanical snail
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answered Jul 4 '11 at 6:15
...
Which is better, number(x) or parseFloat(x)?
...ut starts with a number and then contains other characters, parseFloat truncates the number out of the string, while Number gives NaN (not a number):
parseFloat('1x'); // => 1
Number('1x'); // => NaN
In addition, Number understands hexadecimal input while parseFloat does not:
parseFloat('0...