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Read first N lines of a file in python
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249
Python 2
with open("datafile") as myfile:
head = [next(myfile) for x in xrange(N)]
print ...
What does “The APR based Apache Tomcat Native library was not found” mean?
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12 Answers
12
Active
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Convert Float to Int in Swift
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322
You can convert Float to Int in Swift like this:
var myIntValue:Int = Int(myFloatValue)
printl...
Patterns for handling batch operations in REST web services?
...o delete several messages at once.
DELETE /mail?&id=0&id=1&id=2
It's a little more complicated to batch update partial resources, or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each resource, you treat it as...
How to POST raw whole JSON in the body of a Retrofit request?
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22 Answers
22
Active
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Printing everything except the first field with awk
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92
Assigning $1 works but it will leave a leading space: awk '{first = $1; $1 = ""; print $0, first...
Checking the equality of two slices
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Stephen WeinbergStephen Weinberg
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Converting NSString to NSDate (and back again)
How would I convert an NSString like " 01/02/10 " (meaning 1st February 2010) into an NSDate ? And how could I turn the NSDate back into a string?
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How to get row from R data.frame
...is, for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
.Names = c("A", "B", "C"),
class = "da...
Script to get the HTTP status code of a list of urls?
...curl -o /dev/null --silent --head --write-out '%{http_code}\n' <url>
200
-o /dev/null throws away the usual output
--silent throws away the progress meter
--head makes a HEAD HTTP request, instead of GET
--write-out '%{http_code}\n' prints the required status code
To wrap this up in a com...