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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
I have looked at this question but still don't understand the difference between Iterable and Traversable traits. Can someone explain ?
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Android: Test Push Notification online (Google Cloud Messaging) [closed]
...ing Google Cloud Messaging in my application. Server code is not ready yet and in my environment due to some firewall restrictions I can not deploy a test sever for push notification. What I am looking for is a online server which would send some test notifications to my device to test my client imp...
Fatal error in launcher: Unable to create process using “”C:\Program Files (x86)\Python33\python.exe
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you save me, I was trying to configure oddo and its need to configure python. I was try 5 6 hrs for the same issue, finally its work from your idea. big thanks. I also add my answer for oddo related work.
– Ajay2707
Nov 27 '15 at ...
MySQL, Check if a column exists in a table with SQL
... query that will check if a specific table in MySQL has a specific column, and if not — create it. Otherwise do nothing. This is really an easy procedure in any enterprise-class database, yet MySQL seems to be an exception.
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Piping both stdout and stderr in bash?
...t newer versions of bash have the &> operator, which (if I understand correctly), redirects both stdout and stderr to a file ( &>> appends to the file instead, as Adrian clarified).
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GitHub: Reopening a merged pull request
I've now fixed the bug and want to resubmit the pull request with 1 extra commit. Is there any way to reopen the pull request or update it, or do I have to create a new pull request, type out the description etc again? Gitorious has this feature and we've recently moved to GitHub.
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How do I find the width & height of a terminal window?
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echo -e "lines\ncols"|tput -S to get both the lines and cols see: linux.about.com/library/cmd/blcmdl1_tput.htm
– nickl-
Jan 26 '13 at 3:49
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How to check if a symlink exists
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-L returns true if the "file" exists and is a symbolic link (the linked file may or may not exist). You want -f (returns true if file exists and is a regular file) or maybe just -e (returns true if file exists regardless of type).
According to the GNU manpage, ...
What does axis in pandas mean?
...r the flattened array) , in which axis=0 along the rows (namely, index in pandas), and axis=1 along the columns. For added clarity, one may choose to specify axis='index' (instead of axis=0) or axis='columns' (instead of axis=1).
+------------+---------+--------+
| | A | B |
+...
Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...tpRequest:
Regular web pages can use the XMLHttpRequest object to send and receive data from remote servers, but they're limited by the same origin policy. Extensions aren't so limited. An extension can talk to remote servers outside of its origin, as long as it first requests cross-origin permi...