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How to return dictionary keys as a list in Python?
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Note: in the debugger pdb> list(newdict.keys()) fails because it clashes with pdb's command of the same name. Use pdb> !list(newdict.keys()) to escape pdb commands.
– Riaz Rizvi
Dec 24 '16 at 20:37
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Check if a Postgres JSON array contains a string
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As of PostgreSQL 9.4, you can use the ? operator:
select info->>'name' from rabbits where (info->'food')::jsonb ? 'carrots';
You can even index the ? query on the "food" key if you switch to the jsonb type instead:
alter table rabbits alter info type jsonb using info::jsonb;
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How should a model be structured in MVC? [closed]
...em:
public function postLogin(Request $request)
{
$email = $request->get('email');
$identity = $this->identification->findIdentityByEmailAddress($email);
$this->identification->loginWithPassword(
$identity,
$request->get('password')
);
}
Your con...
Pair/tuple data type in Go
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There is no tuple type in Go, and you are correct, the multiple values returned by functions do not represent a first-class object.
Nick's answer shows how you can do something similar that handles arbitrary types using interface{}. (I might have used an array rather than a struct...
How do you UrlEncode without using System.Web?
...en percent encoded.
Here is the result:
******* Different *******
'#' -> Uri "#" Data "%23"
'$' -> Uri "$" Data "%24"
'&' -> Uri "&" Data "%26"
'+' -> Uri "+" Data "%2B"
',' -> Uri "," Data "%2C"
'/' -> Uri "/" Data "%2F"
':' -> Uri ":" Data "%3A"
';' -> Uri ";" Da...
How assignment works with Python list slice?
...ere you can insert, delete, or replace contents from a list:
Insertion:
>>> a = [1, 2, 3]
>>> a[0:0] = [-3, -2, -1, 0]
>>> a
[-3, -2, -1, 0, 1, 2, 3]
Deletion:
>>> a
[-3, -2, -1, 0, 1, 2, 3]
>>> a[2:4] = []
>>> a
[-3, -2, 1, 2, 3]
Replacem...
Why is division in Ruby returning an integer instead of decimal value?
...vision. You can make one of the numbers a Float by adding .0:
9.0 / 5 #=> 1.8
9 / 5.0 #=> 1.8
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NUnit vs. MbUnit vs. MSTest vs. xUnit.net [closed]
... those attributes decorate should be executed. While xUnit.NET in its default form allows you to write test classes that are similar to NUnit test fixtures with their test methods, you are not confined to this form of unit testing at all. You are free to extend the framework to support BDD-style Con...
How do you remove duplicates from a list whilst preserving order?
...mutations in list comprehensions. This is also the fastest solution too:
>>> from more_itertools import unique_everseen
>>> items = [1, 2, 0, 1, 3, 2]
>>> list(unique_everseen(items))
[1, 2, 0, 3]
Just one simple library import and no hacks.
This comes from an implemen...
How to do multiple arguments to map function where one remains the same in python?
...e first iterable is consumed, so an infinite iterable is perfectly fine:
>>> from operator import add
>>> from itertools import repeat
>>> list(map(add, [1,2,3], repeat(4)))
[5, 6, 7]
In fact, this is equivalent to the example for repeat in the docs:
>>> list(...