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Pandas aggregate count distinct
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153
How about either of:
>>> df
date duration user_id
0 2013-04-01 30 ...
Custom error pages on asp.net MVC3
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201
Here's an example of how I handle custom errors. I define an ErrorsController with actions handl...
Argparse: Required argument 'y' if 'x' is present
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124
No, there isn't any option in argparse to make mutually inclusive sets of options.
The simple...
Using NSPredicate to filter an NSArray based on NSDictionary keys
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151
It should work - as long as the data variable is actually an array containing a dictionary wit...
Count cells that contain any text
...ts not empty/blank, count it. I believe this is what you want.
=COUNTIF(A1:A10, "<>")
Otherwise you can use CountA as Scott suggests
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Python's json module, converts int dictionary keys to strings
... for the given language, are strings (or "scalars" in Perl). In perl $foo{1}, $foo{1.0}, and $foo{"1"} are all references to the same mapping in %foo --- the key is evaluated as a scalar!
JSON started as a Javascript serialization technology. (JSON stands for JavaScript Object Notation.) Naturall...
How do you enable the escape key close functionality in a Twitter Bootstrap modal?
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301
It looks like this is an issue with how the keyup event is being bound.
You can add the tabinde...
Updating MySQL primary key
...update the primary key.
alter table xx drop primary key, add primary key(k1, k2, k3);
To fix things:
create table fixit (user_2, user_1, type, timestamp, n, primary key( user_2, user_1, type) );
lock table fixit write, user_interactions u write, user_interactions write;
insert into fixit
selec...
How to disable phone number linking in Mobile Safari?
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edited Apr 6 '18 at 0:17
Scott Hoffman
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answered Oct 22...
Inserting multiple rows in mysql
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1206
INSERT statements that use VALUES syntax can insert multiple rows. To do this, include mul...