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Filter rows which contain a certain string
I have to filter a data frame using as criterion those row in which is contained the string RTB .
4 Answers
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val-mutable versus var-immutable in Scala
Are there any guidelines in Scala on when to use val with a mutable collection versus using var with an immutable collection? Or should you really aim for val with an immutable collection?
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Running multiple commands in one line in shell
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You are using | (pipe) to direct the output of a command into another command. What you are looking for is && operator to execute the next command only if the previous one succeeded:
cp /templates/apple /templates/used...
Subscripts in plots in R
I can't find a way how to write subscripts in the title or the subtitle in R.
How can I write v 1,2 with 1,2 as subscripts?
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Get ffmpeg information in friendly way
Every time I try to get some information about my video files with ffmpeg, it pukes a lot of useless information mixed with good things.
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How to compare if two structs, slices or maps are equal?
I want to check if two structs, slices and maps are equal.
5 Answers
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What is the right way to POST multipart/form-data using curl?
I used this syntax to post a file along with some parameters:
5 Answers
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Convert string to integer type in Go?
I'm trying to convert a string returned from flag.Arg(n) to an int . What is the idiomatic way to do this in Go?
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How does Dijkstra's Algorithm and A-Star compare?
I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm.
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How to determine an interface{} value's “real” type?
I have not found a good resource for using interface{} types. For example
7 Answers
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