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WARN Could not determine content-length of response body. Set content-length of the response or set
I just upgraded to rails 3.2.2, and now on rails s, page load, I get all these errors in the log:
3 Answers
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How to calculate the CPU usage of a process by PID in Linux from C?
...time kernel mode jiffies with child's
You're probably after utime and/or stime. You'll also need to read the cpu line from /proc/stat, which looks like:
cpu 192369 7119 480152 122044337 14142 9937 26747 0 0
This tells you the cumulative CPU time that's been used in various categories, ...
Confused by python file mode “w+”
... forget this, the f.read() call will try to read from the end of the file, and will return an empty string.
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Pythonic way to check if a list is sorted or not
... edited Jan 29 '18 at 14:08
Andreas Haferburg
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answered Sep 20 '10 at 20:33
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Difference between dispatch_async and dispatch_sync on serial queue?
...k is finished whereas dispatch_async return after it is added to the queue and may not finished.
for this code
dispatch_async(_serialQueue, ^{ printf("1"); });
printf("2");
dispatch_async(_serialQueue, ^{ printf("3"); });
printf("4");
It may print 2413 or 2143 or 1234 but 1 always before 3
for ...
Disable XML validation in Eclipse
My Eclipse validates XML files every time I save a file and it takes a while to validate them.
The project is created using gwt-maven-plugin.
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Hidden Features of Xcode
...h a huge influx of newbies to Xcode, I'm sure there are lots of Xcode tips and tricks to be shared.
89 Answers
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Is it better to specify source files with GLOB or each file individually in CMake?
...ouch" the CMakeLists.txt that does the glob, either by using the touch command or by writing the file with no changes. This will force CMake to re-run and pick up the new file.
To fix the second problem you can organize your code carefully into directories, which is what you probably do anyway. In ...
Remove an entire column from a data.frame in R
...on't need drop argument cause it always return data.frame from data.frame. And I think this is much better way to localized columns (and only columns) in data.frame (and it's faster). Check: cars[-1] (one col data.frame) or better cars[-(1:2)]: data frame with 0 columns and 50 rows.
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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
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Also, if you want this to be very specific and not "round" the duration, check out Radar's gem: github.com/radar/distance_of_time_in_words. Drop-in replacement for distance_of_time_in_words and you can get the rounded number by passing vague: true as an option.
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