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Using the RUN instruction in a Dockerfile with 'source' does not work
...p;& ln -s /bin/bash /bin/sh
This should work for every Ubuntu docker base image. I generally add this line for every Dockerfile I write.
Edit by a concerned bystander
If you want to get the effect of "use bash instead of sh throughout this entire Dockerfile", without altering and possibly da...
Cost of exception handlers in Python
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How can I make pandas dataframe column headers all lowercase?
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Sending files using POST with HttpURLConnection
...on {
this.charset = charset;
// creates a unique boundary based on time stamp
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
Log.e("URL", "URL : " + requestURL.toString());
httpConn = (HttpURLConnection) url.ope...
Getting “bytes.Buffer does not implement io.Writer” error message
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SQL/mysql - Select distinct/UNIQUE but return all columns?
...ery:
SELECT * from table GROUP BY field1;
It will show all your results based on a single instance of field1.
For example, if you have a table with name, address and city. A single person has multiple addresses recorded, but you just want a single address for the person, you can query as follows...
What is polymorphism, what is it for, and how is it used?
...ype().Name, v.Wheels));
}
}
In this example, we create a list of the base class Vehicle, which does not know about how many wheels each of its sub-classes has, but does know that each sub-class is responsible for knowing how many wheels it has.
We then add a Bicycle, Car and Truck to the list...
What does “#pragma comment” mean?
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How exactly does a generator comprehension work?
...narios where you need to take one item at a time, do a lot of calculations based on that item, and then move on to the next item. If you need more than one value, you can also use a generator expression and grab a few at a time. If you need all the values before your program proceeds, use a list com...
Detect encoding and make everything UTF-8
...ng out lots of texts from various RSS feeds and inserting them into my database.
24 Answers
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