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Extracting the last n characters from a string in R
...tringr had been remade using stringi as a backend, so should work with NAs etc. now.
– m-dz
Jul 11 '16 at 10:09
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How to encode URL parameters?
... this set: +@?=:*#;,$&. This set is used in GET parameters (&, +, etc.), anchor tags (#), wildcard tags (*), email/username parts (@), etc..
For example -- If you use encodeURI(), user@example.com/?email=me@home will not properly send the second @ to the server, except for your browser hand...
What IDE to use for Python? [closed]
...guage Support -. | | | | | | | | | | .- GUI Designer (Qt, Eric, etc)
Auto Code Completion -. | | | | | | | | | | | | .- Integrated DB Support
Commercial/Free -. | | | | | | | | | | | | | | .- Refactoring
Cross Platform -. | | | | | | | | | ...
Do rails rake tasks provide access to ActiveRecord models?
... require your configuration (which should specify all your required models etc)
eg:
require 'config/environment'
alternatively you can just require each seperately, but you might have environment issues AR not set up etc)
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Why do you create a View in a database?
...ant to give all of your sales people access to the name, address, zipcode, etc. fields, but not credit_card_number. You can create a view that only includes the columns they need access to and then grant them access on the view.
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Environment variables in Mac OS X
...redefined in subshells, not for environment variables that are inherited.
/etc/profile: this is loaded before ~/.profile, but is otherwise equivalent. Use it when you want the variable to apply to terminal programs launched by all users on the machine (assuming they use bash).
~/.MacOSX/environment....
How to create a string with format?
I need to create a string with format which can convert int, long, double etc. types into string. Using Obj-C, I can do it via below way.
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Can't connect to MySQL server error 111 [closed]
... to work. I then figured out that the "bind-address" parameter is in the "/etc/mysql/mysql.conf.d/mysqld.cnf" file. Commented it out over there and it worked!
– Yahya
Aug 17 '17 at 7:39
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How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
... Root CA Certificate is obtained by Tomcat from the
# JDK's truststore in /etc/pki/java/cacerts
# The non-APR HTTPS connector (APR uses OpenSSL-like configuration, much
# easier than this) in server.xml looks like this
# (See: https://tomcat.apache.org/tomcat-6.0-doc/ssl-howto.html):
#
# <Conn...
How to remove leading and trailing whitespace in a MySQL field?
... removes regular spaces and not other whitespace characters (tab, newline, etc)
– TM.
Jan 9 '14 at 20:50
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