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Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
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edited Feb 15 '18 at 20:12
user664833
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If list index exists, do X
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edited Dec 12 '16 at 0:03
Dimitris Fasarakis Hilliard
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Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
... be null, it may not in fact be a System.Exception.
See CLI spec section 10.5 (specifically CLS rule 40) for more details
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Replacing column values in a pandas DataFrame
... something like this:
w['female'] = w['female'].map({'female': 1, 'male': 0})
(Here I convert the values to numbers instead of strings containing numbers. You can convert them to "1" and "0", if you really want, but I'm not sure why you'd want that.)
The reason your code doesn't work is because...
Assign width to half available screen width declaratively
... android:orientation="horizontal">
<Button android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="somebutton"/>
<TextView android:layout_width="0dp"
android:layout_height="wrap_conte...
Postgresql aggregate array
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Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks
FROM student s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the columns on SELECT to G...
Using OR in SQLAlchemy
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340
From the tutorial:
from sqlalchemy import or_
filter(or_(User.name == 'ed', User.name == 'wendy...
Formatting Decimal places in R
I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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Using awk to print all columns from the nth to the last
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will print all but very first column:
awk '{$1=""; print $0}' somefile
will print all but two first columns:
awk '{$1=$2=""; print $0}' somefile
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