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Select first 4 rows of a data.frame in R
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156
Use head:
dnow <- data.frame(x=rnorm(100), y=runif(100))
head(dnow,4) ## default is 6
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Uses of content-disposition in an HTTP response header
...security concerns.
The authority on the content-disposition header is RFC 1806 and RFC 2183. People have also devised content-disposition hacking. It is important to note that the content-disposition header is not part of the HTTP 1.1 standard.
The HTTP 1.1 Standard (RFC 2616) also mentions the po...
How can I do DNS lookups in Python, including referring to /etc/hosts?
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I'm not really sure if you want to do DNS lookups yourself or if you just want a host's ip. In...
Google Authenticator implementation in Python
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153
I wanted to set a bounty on my question, but I have succeeded in creating solution. My problem...
How to replace captured groups only?
...preceding and following text:
str.replace(/(.*name="\w+)(\d+)(\w+".*)/, "$1!NEW_ID!$3")
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How do I create an array of strings in C?
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Generating a list of which files changed between hg versions
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166
hg status --rev x:y
where x and y are desired revision numbers (or tag or branch names).
If...
YAML mime type?
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edited May 22 '18 at 14:46
Martin Tournoij
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UITableView - change section header color
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31 Answers
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Can someone explain __all__ in Python?
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11 Answers
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