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PostgreSQL create table if not exists
...E
CREATE TABLE myschema.mytable (i integer);
END IF;
END
$func$;
Call:
SELECT create_mytable(); -- call as many times as you want.
Notes:
The columns schemaname and tablename in pg_tables are case-sensitive. If you double-quote identifiers in the CREATE TABLE statement, you need...
I need to securely store a username and password in Python, what are my options?
I'm writing a small Python script which will periodically pull information from a 3rd party service using a username and password combo. I don't need to create something that is 100% bulletproof (does 100% even exist?), but I would like to involve a good measure of security so at the very least it w...
ViewModel Best Practices
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I create what I call a "ViewModel" for each view. I put them in a folder called ViewModels in my MVC Web project. I name them after the controller and action (or view) they represent. So if I need to pass data to the SignUp view on the Membe...
“query function not defined for Select2 undefined error”
...dy been initialized by the .select2({}) method. A better solution would be calling the destroy method first. Ex: $("#mySelectControl").select2("destroy").select2({});
– Dmitry S.
Sep 4 '14 at 18:41
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In a django model custom save() method, how should you identify a new object?
...ir warning that it seems to always equal False if you're checking it after calling super(TheModel, self).save(*args, **kwargs): github.com/django/django/blob/stable/1.10.x/django/db/models/…
– agilgur5
Jun 26 '16 at 5:52
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Update MongoDB field using value of another field
...e code for "MongoDB 3.2 or newer". Since forEach is async nothing will typically get written in the last bulkWrite.
– Viktor Hedefalk
Oct 4 '19 at 8:35
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
...lets you to dig in the hash deeper than you could with using direct .try() calls, if you want the code still look nice:
class Hash
def get_deep(*fields)
fields.inject(self) {|acc,e| acc[e] if acc}
end
end
You should be careful with various objects (especially params), because Strings and ...
Sort a list from another list IDs
... thats why I upvoted too, does rely on knowing the document ID property is called Id. Its not specified in the question.
– Jodrell
Mar 7 '13 at 16:13
3
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Find object in list that has attribute equal to some value (that meets any condition)
...## [1, 2, 3, 4, 5, 5, 6] Will Return: ###
# 5
# 5
# Traceback (most recent call last):
# File "C:\Users\mousavin\workspace\Scripts\test.py", line 22, in <module>
# print(next(my_filter_iter).value)
# StopIteration
# You can do that None stuff or whatever at this point, if you don't lik...
How do I implement an Objective-C singleton that is compatible with ARC?
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What about if somebody calls [[MyClass alloc] init]? That would create a new object. How can we avoid this (other than declaring static MyClass *sharedInstance = nil outside the method).
– Ricardo Sanchez-Saez
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