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Jinja2 template variable if None Object set a default value
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Use the none builtin function (http://jinja.pocoo.org/docs/templates/#none):
{% if p is not none %}
{{ p.User['first_name'] }}
{% else %}
NONE
{%endif %}
or
{{ p.User['first_name'] if p != None else 'NONE' }}
or if you need an empty string...
What are .a and .so files?
... new .so file with ln command.
This will help you to build the .so files.
http://www.yolinux.com/TUTORIALS/LibraryArchives-StaticAndDynamic.html
Hope this helps.
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Escape Character in SQL Server
...to SQL injection attacks if you don't consider it. More info at Google or: http://it.toolbox.com/wiki/index.php/How_do_I_escape_single_quotes_in_SQL_queries%3F
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How to document Ruby code?
...that YARD is still not included in Ruby. (By the way YARD homepage accepts HTTPS.)
– Franklin Yu
Oct 25 '17 at 15:30
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When should I use UNSIGNED and SIGNED INT in MySQL?
...e's a table of the ranges of values each INTEGER type can store:
Source: http://dev.mysql.com/doc/refman/5.6/en/integer-types.html
UNSIGNED ranges from 0 to n, while signed ranges from about -n/2 to n/2.
In this case, you have an AUTO_INCREMENT ID column, so you would not have negatives. Thus, u...
Grouping functions (tapply, by, aggregate) and the *apply family
...se *apply functions (from the intro to plyr document from the plyr webpage http://had.co.nz/plyr/)
Base function Input Output plyr function
---------------------------------------
aggregate d d ddply + colwise
apply a a/l aaply / alply
by ...
What is the Sign Off feature in Git for?
...ff-by: Project Maintainer <project.maintainer@example.com>
Source: http://gerrit.googlecode.com/svn/documentation/2.0/user-signedoffby.html
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Is it possible to open a Windows Explorer window from PowerShell?
...shell prompt. Using this method, you can also pass cmd-line arguments (see http://support.microsoft.com/kb/314853)
The Invoke-Item cmdlet provides a way to run an executable file or to open a file (or set of files) from within Windows PowerShell. Alias: ii
use system.diagnostics.process
Examples:
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How to get the containing form of an input?
...'));
Also, see this MDN link on the form property of HTMLInputElement:
https://developer.mozilla.org/en/DOM/HTMLInputElement#Properties
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How to disable “Save workspace image?” prompt in R?
...k on "Properties", and add --no-save to the command that starts R.
(from http://tolstoy.newcastle.edu.au/R/help/05/03/1115.html)
If you are using a different editor than Rgui, you have to pass --no-save to the R command line when starting R
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