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What are naming conventions for MongoDB?
...fficial documentation mentions you may use underscores, also built-in identifier is named _id (but this may be be to indicate that _id is intended to be private, internal, never displayed or edited.
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How can I manually generate a .pyc file from a .py file
...mething about meta files in Python. This compileall also build some cache? If not, what is the command for that?? Since the end-users doesn't have write permission to the lib directory. And I want to speed up things here... PS. also take a look at the -O flag, for bytecode (.pyo file iso .pyc) compi...
How do I use grep to search the current directory for all files having the a string “hello” yet disp
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You can pass in wildcards in instead of specifying file names or using stdin.
grep hello *.h *.cc
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How do I revert a Git repository to a previous commit?
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This depends a lot on what you mean by "revert".
Temporarily switch to a different commit
If you want to temporarily go back to it, fool around, then come back to where you are, all you have to do is check out the desired commit:
# This will detach your HEAD, that is, leave you with no branch check...
Repeat command automatically in Linux
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Watch every 5 seconds ...
watch -n 5 ls -l
If you wish to have visual confirmation of changes, append --differences prior to the ls command.
According to the OSX man page, there's also
The --cumulative option makes highlighting "sticky", presenting a
running di...
C# Equivalent of SQL Server DataTypes
...ext None None
uniqueidentifier SqlGuid Guid
rowversion None Byte[]
bit SqlBoolean Boolean
tinyint Sq...
How to call another controller Action From a controller in Mvc
... Won't you be missing ControllerContext, Request and friends if you just do this?
– cirrus
Oct 15 '13 at 10:37
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Returning multiple objects in an R function [duplicate]
...ense. The most general way to handle this is to return a list object. So if you have an integer foo and a vector of strings bar in your function, you could create a list that combines these items:
foo <- 12
bar <- c("a", "b", "e")
newList <- list("integer" = foo, "names" = bar)
Then re...
Setting PATH environment variable in OSX permanently
... This is the only solution that works on El Capitan. Better than modifying .bash_profile and .profile.
– IgorGanapolsky
Nov 29 '15 at 21:06
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How to alias 'git checkout' to 'git co'
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