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How to change the docker image installation directory?
... custom path, in /etc/docker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base directory (where container and images go) using the -goption when starting the Docker daemon. (c...
How to send email attachments?
...MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mail(send_from, send_to, subject, text, files=None,
server="127.0.0.1"):
assert isinstance(send_to, list)
msg = MIMEMultipart()
msg['From'] = send_from
msg['To'...
T-SQL Cast versus Convert
...e extended features, use CAST.
EDIT:
As noted by @beruic and @C-F in the comments below, there is possible loss of precision when an implicit conversion is used (that is one where you use neither CAST nor CONVERT). For further information, see CAST and CONVERT and in particular this graphic: SQL S...
Programmer Puzzle: Encoding a chess board state throughout a game
...ing. If you read through this I've determined that the only way to store a complete game state is by storing a complete list of moves. Read on for why. So I use a slightly simplified version of the problem for piece layout.
The Problem
This image illustrates the starting Chess position. Chess oc...
Escape Character in SQL Server
...concatenating SQL into a VARCHAR to execute (i.e. dynamic SQL), then I'd recommend parameterising the SQL. This has the benefit of helping guard against SQL injection plus means you don't have to worry about escaping quotes like this (which you do by doubling up the quotes).
e.g. instead of doing
...
How to create a listbox in HTML without allowing multiple selection?
... the number of elements you want
you may want to check this site
http://www.htmlcodetutorial.com/forms/_SELECT.html
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How to get just one file from another branch
...ile?
Update August 2019, Git 2.23
With the new git switch and git restore commands, that would be:
git switch master
git restore --source experiment -- app.js
By default, only the working tree is restored.
If you want to update the index as well (meaning restore the file content, and add it to the...
Go Error Handling Techniques [closed]
...rinciple is sound, but the syntax leaves a lot to be desired IMHO. However complaining is forbidden, so I'll just drink my kool-aid now ;-)
– Thomas
Jan 1 '14 at 5:28
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Bash history without line numbers
The bash history command is very cool. I understand why it shows the line numbers, but is there a way I can invoke the history command and suppress the line numbers?
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How do I bind a WPF DataGrid to a variable number of columns?
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