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Symbol for any number of any characters in regex?
I'm wondering is there a symbol for any number (including zero) of any characters
5 Answers
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How to use a variable to specify column name in ggplot
...an use aes_string:
f <- function( column ) {
...
ggplot( rates.by.groups, aes_string(x="name", y="rate", colour= column,
group=column ) )
}
as long as you pass the column to the function as a string (f("majr") rather than f(majr)). Also note that...
How to push to a non-bare Git repository?
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receive.denyCurrentBranch updateInstead
This options was added in Git 2.3, and it makes the server update its working tree if it is clean.
So if you ensure that you always commit before you pull locally, and keep a clean working tree on the s...
Python `if x is not None` or `if not x is None`?
I've always thought of the if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convent...
Retrieve list of tasks in a queue in Celery
How can I retrieve a list of tasks in a queue that are yet to be processed?
14 Answers
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Does Go have “if x in” construct similar to Python?
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There is no built-in operator to do it in Go. You need to iterate over the array. You can write your own function to do it, like this:
func stringInSlice(a string, list []string) bool {
for _, b := range list {
if b == a {
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Parse a URI String into Name-Value Collection
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If you are looking for a way to achieve it without using an external library, the following code will help you.
public static Map<String, String> splitQuery(URL url) throws UnsupportedEncodingException {
Map<String, String> query_pairs = new LinkedHashMap<String, String>();...
Appending to an empty DataFrame in Pandas?
Is it possible to append to an empty data frame that doesn't contain any indices or columns?
3 Answers
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Image inside div has extra space below the image
Why in the following code the height of the div is bigger than the height of the img ? There is a gap below the image, but it doesn't seems to be a padding/margin.
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How to configure git push to automatically set upstream without -u?
... to automatically set the upstream reference when I push a locally-created branch for the first time.
10 Answers
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