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What is the difference between exit and return? [duplicate]
What is difference between return and exit statement in C programming when called from anywhere in a C program?
4 Answers
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Update or Insert (multiple rows and columns) from subquery in PostgreSQL
... as col2, t3.foobar as col3
FROM table2 t2 INNER JOIN table3 t3 ON t2.id = t3.t2_id
WHERE t2.created_at > '2016-01-01'
) AS subquery
WHERE table1.id = subquery.col1;
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Inherit from a generic base class, apply a constraint, and implement an interface in C#
...s pretty much just a subtle convenience. I suppose it also lets you subtly call out when a type declaration is ending vs say a method body declaration.
– Eric Lippert
Jan 6 '10 at 0:21
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How to filter Pandas dataframe using 'in' and 'not in' like in SQL
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Series.isin accepts various types as inputs. The following are all valid ways of getting what you want:
df['countries'].isin(c1)
0 False
1 True
2 False
3 False
4 True
Name: countries, dtype: bool
# `in` operation
df[df['countries'].isin(c1)]
countries
1 UK
4 Ch...
How do I parse JSON with Objective-C?
...NSClassFromString(@"NSJSONSerialization"))
{
NSError *error = nil;
id object = [NSJSONSerialization
JSONObjectWithData:returnedData
options:0
error:&error];
if(error) { /* JSON was malformed, act appropriately here */...
Pure JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready
...ork that does all the cross-browser compatibility for you is to just put a call to your code at the end of the body. This is faster to execute than an onload handler because this waits only for the DOM to be ready, not for all images to load. And, this works in every browser.
<!doctype html>...
Javascript Equivalent to PHP Explode()
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Downvoter: "How dare you provide a simpler and more performant solution instead of validating my preconceptions??"
– jchook
May 18 '18 at 19:36
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Command line for looking at specific port
... Also worth mentioning the -o flag (i.e. -nao here) to include the PID of the process using the port.
– Steve Chambers
Nov 28 '17 at 10:29
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Python `if x is not None` or `if not x is None`?
... of the if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convention)?*
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PostgreSQL Connection URL
... postgresql://localhost/mydb?user=other&password=secret did the trick
– Karuhanga
Oct 29 '18 at 14:31
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