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Eager load polymorphic
... Review and Shop since it allows you to eager load in addition to querying by related fields.
The reason that this is necessary is that ActiveRecord cannot build a join based on reviewable alone, since multiple tables represent the other end of the join, and SQL, as far as I know, does not allow yo...
get dictionary value by key
How can I get the dictionary value by key on function
10 Answers
10
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Why does SIGPIPE exist?
...utput pipe has been closed. Sure you can duplicate the behavior of SIGPIPE by explicitly checking for EPIPE and exiting, but the whole purpose of SIGPIPE was to achieve this behavior by default when the programmer is lazy.
s...
Open new Terminal Tab from command line (Mac OS X)
...w* instead.
function newtab {
# If this function was invoked directly by a function named 'newwin', we open a new *window* instead
# of a new tab in the existing window.
local funcName=$FUNCNAME
local targetType='tab'
local targetDesc='new tab in the active Terminal window'
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Nginx 403 forbidden for all files
...answered Jul 22 '11 at 22:11
kolbyjackkolbyjack
14.5k55 gold badges3939 silver badges3333 bronze badges
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]
...you hand it, return the actual image. That way, the image is only viewable by the proper logged in user.
– Captain Hypertext
Apr 20 '15 at 13:08
8
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Get string character by index - Java
....charCount(cp);
// ^^^^^^^^^^^^^^^^^^^^^^^
// Increment pos by 1 of more depending
// the number of Java `char` required to
// encode that particular codepoint.
}
Iterate over code points using the Stream API
The third solution is basically the same as the second, but...
Update a dataframe in pandas while iterating row by row
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You should assign value by df.ix[i, 'exp']=X or df.loc[i, 'exp']=X instead of df.ix[i]['ifor'] = x.
Otherwise you are working on a view, and should get a warming:
-c:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from...
Fastest way to count exact number of rows in a very large table?
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@zerkmsby: For COUNT(key) I meant COUNT(primarykey) which should be non nullable. I'll clarify
– gbn
May 20 '11 at 8:30
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Use space as a delimiter with cut command
...uments before passing them to the command being invoked.
(a) is answered by a quote from the POSIX guidelines for utilities (emphasis mine)
If the SYNOPSIS of a standard utility shows an option with a mandatory option-argument [...] a conforming application shall use separate arguments for tha...