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In Python how should I test if a variable is None, True or False
I have a function that can return one of three things:
6 Answers
6
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Android - border for button
...917" />
</shape>
And add button to your XML activity layout and set background android:background="@drawable/button_border".
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/button_border"
android:text="Butto...
What does $@ mean in a shell script?
..., $@ does not necessarily come from paramaters passed to the script... eg; set a b "x y"; printf '(%s)' "$@" outputs (a)(b)(x y)
– Peter.O
Apr 3 '12 at 14:37
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Convert column classes in data.table
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What is the idiomatic way of doing this for a subset of columns (instead of all of them)? I've defined a character vector convcols of columns. dt[,lapply(.SD,as.numeric),.SDcols=convcols] is almost instant while dt[,convcols:=lapply(.SD,as.numeric),.SDcols=convcols] almost ...
Rollback a Git merge
...ou do a fast-forward merge, the second one you describe, you can use git reset to get back to the previous state:
git reset --hard <commit_before_merge>
You can find the <commit_before_merge> with git reflog, git log, or, if you're feeling the moxy (and haven't done anything else): gi...
ssh: The authenticity of host 'hostname' can't be established
...
Depending on your ssh client, you can set the StrictHostKeyChecking option to no on the command line, and/or send the key to a null known_hosts file. You can also set these options in your config file, either for all hosts or for a given set of IP addresses or ho...
Window.open and pass parameters by post method
...;
document.getElementById('TheForm').submit();
</script>
Edit:
To set the values in the form dynamically, you can do like this:
function openWindowWithPost(something, additional, misc) {
var f = document.getElementById('TheForm');
f.something.value = something;
f.more.value = additio...
Printing Lists as Tabular Data
... If the data in the body is larger than the headers, you can set column width based on the first row of data. for t in data[0]: ...
How to get RGB values from UIColor?
I'm creating a color object using the following code.
15 Answers
15
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GitHub clone from pull request?
... a new branch that is on the state of the pull request.
You might want to set up an alias by running
git config --global alias.pro '!f() { git fetch -fu ${2:-origin} refs/pull/$1/head:pr/$1 && git checkout pr/$1; }; f'
Now you can checkout any PR by running git pr <pr_number>, or g...