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How to check if all of the following items are in a list?
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love this solution. is there a way to get an index location or a list value instead of a bool (True:False)?
– Vlad Gulin
Nov 16 '18 at 23:05
add ...
Access-Control-Allow-Origin Multiple Origin Domains?
...Allow-Origin. Something like the result of this - echo http://example.com/index.php/ab/cd | cut -d'/' -f1,2,3 in bash command . Is this possible to do the same in the (apache)conf file? Any Idea?
– 3AK
Jun 16 '16 at 10:02
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Getting one value from a tuple
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You can write
i = 5 + tup()[0]
Tuples can be indexed just like lists.
The main difference between tuples and lists is that tuples are immutable - you can't set the elements of a tuple to different values, or add or remove elements like you can from a list. But other th...
JavaScript function similar to Python range()
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This answer does not account for a starting index and the ability to increase step size.
– Fluous
Aug 24 '19 at 11:36
add a comment
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Ruby optional parameters
... passing an array as the parameter, and then checking if the value at that index was nil or not.
class Array
def ascii_to_text(params)
param_len = params.length
if param_len > 3 or param_len < 2 then raise "Invalid number of arguments #{param_len} for 2 || 3." end
bottom = para...
How do I call a dynamically-named method in Javascript?
...ut you're creating an array, then assigning to the array's properties (not indexes). You might as well do var dyn_functions = {}; so you don't needlessly create an array... this isn't a huge issue though.
– David Sherret
Nov 26 '13 at 16:46
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How to count TRUE values in a logical vector
...# gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm = TRUE) # best way to count TRUE values
(which gives 1). I think that table solution is less efficient (look at the code of table functi...
MySQL InnoDB not releasing disk space after deleting data rows from table
...ma when you introduce the partitioning for your table like - Unique Keys, Indexes to include partition column etc.
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rake db:schema:load vs. migrations
...ema), go through the existing DB structure and add/remove tables, columns, indexes as required.
To me this would be a lot more robust, even if possibly a little slower.
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Postgres: SQL to list table foreign keys
...QL prompt, in addition to showing table column's data types it'll show the indexes and foreign keys.
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