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Get column index from column name in python pandas
... .get_loc():
In [45]: df = DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
In [46]: df.columns
Out[46]: Index([apple, orange, pear], dtype=object)
In [47]: df.columns.get_loc("pear")
Out[47]: 2
although to be honest I don't often need this myself. Usually access by name does ...
Get Specific Columns Using “With()” Function in Laravel Eloquent
...
User::with(array('post'=>function($query){
$query->select('id','user_id');
}))->get();
Don't forget to include the foreign key (assuming it is user_id in this example) to resolve the relationship, otherwise you'll get zero results for your relation.
...
Linux command or script counting duplicated lines in a text file?
...cal, ordered list:
echo "red apple
> green apple
> green apple
> orange
> orange
> orange
> " | sort -u
?
green apple
orange
red apple
or
sort -u FILE
-u stands for unique, and uniqueness is only reached via sorting.
A solution which preserves the order:
echo "red appl...
Postgresql query between date ranges
...ecome simpler if you use >= start AND < end.
For example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of the month you need, but that should be straight forward in an...
How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
...
Provide the :name option to add_index, e.g.:
add_index :studies,
["user_id", "university_id", "subject_name_id", "subject_type_id"],
:unique => true,
:name => 'my_index'
If using the :index option on references in a create_table block, it takes the same options hash as add_index...
AngularJS passing data to $http.get request
...ams.
$http({
url: user.details_path,
method: "GET",
params: {user_id: user.id}
});
See: http://docs.angularjs.org/api/ng.$http#get and https://docs.angularjs.org/api/ng/service/$http#usage (shows the params param)
...
Why does “split” on an empty string return a non-empty array?
...
If you split an orange zero times, you have exactly one piece - the orange.
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How to automatically generate N “distinct” colors?
... slightly mint green) is imperceptible, while the difference between 30° (orange) and 45° (peach) is quite obvious. You need a non-linear spacing along the hue for best results.
– Phrogz
Feb 21 '12 at 17:05
...
How can I explode and trim whitespace?
..._split ('/(\s*,*\s*)*,+(\s*,*\s*)*/', 'red, green thing ,, ,, blue ,orange');
Result:
Array
(
[0] => red
[1] => green thing
[2] => blue
[3] => orange
)
This
Splits on commas only
Trims white spaces from each item.
Ignores empty items
Does not split an item...
How can I change the table names when using ASP.NET Identity?
...ers" you can also change the field names the default Id column will become User_Id.
modelBuilder.Entity<IdentityUser>()
.ToTable("Users", "dbo").Property(p => p.Id).HasColumnName("User_Id");
or simply the below if you want to keep all the standard column names:
model...