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What's the opposite of head? I want all but the first N lines of a file
...swered Aug 18 '10 at 0:31
Joe EnosJoe Enos
35.7k1111 gold badges6969 silver badges126126 bronze badges
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Postgres could not connect to server
After I did brew update and brew upgrade, my postgres got some problem. I tried to uninstall postgres and install again, but it didn't work as well.
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Best way to split string into lines
...ronment.NewLine is a no-go as far as I’m concerned. In fact, of all the possible solutions I prefer the one using regular expressions since only that handles all source platforms correctly.
– Konrad Rudolph
Jan 20 '11 at 17:14
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How to save a dictionary to a file?
...of thing.
These functions are all that you need for saving and loading almost any object:
def save_obj(obj, name ):
with open('obj/'+ name + '.pkl', 'wb') as f:
pickle.dump(obj, f, pickle.HIGHEST_PROTOCOL)
def load_obj(name ):
with open('obj/' + name + '.pkl', 'rb') as f:
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Very large matrices using Python and NumPy
...re efficient data structures for sparse matrices (matrices with lots of zeros), like scipy.sparse.csc_matrix.
Modify your algorithm to work on submatrices. You can read from disk only the matrix blocks that are currently being used in computations. Algorithms designed to run on clusters usually wo...
How to fix Python indentation
...ted Jun 21 '09 at 19:29
SilentGhost
246k5454 gold badges286286 silver badges278278 bronze badges
answered Jun 21 '09 at 18:36
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How do I get PHP errors to display?
...wever, this doesn't make PHP to show parse errors - the only way to show those errors is to modify your php.ini with this line:
display_errors = on
(if you don't have access to php.ini, then putting this line in .htaccess might work too):
php_flag display_errors 1
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How to clear the cache in NetBeans
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Close NetBeans before deleting the cache.
NetBeans 7.2+, Windows 7
Cache is located in C:\Users\<username>\AppData\Local\NetBeans\Cache\.
Clear the cache using the %USERPROFILE% Windows variable:
del /s /q %USERPROFIL...
How to remove files that are listed in the .gitignore but still on the repository?
I have some files in my repository that should be ignored, i added them to the .gitignore but, of course, they are not removed from my repository.
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
...ariable name from M2_HOME to M3_HOME did the trick. I am on a Mac running OSX 10.9 with JDK 1.7. Hope this helps.
Note: Please delete M2_HOME, if already set. Eg: unset M2_HOME
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