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When to use %r instead of %s in Python? [duplicate]

...mport datetime >>> d = datetime.date.today() >>> str(d) '2011-05-14' >>> repr(d) 'datetime.date(2011, 5, 14)' Types for which repr() doesn't produce Python syntax include those that point to external resources such as a file, which you can't guarantee to recreate in a di...
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Assign output of a program to a variable using a MS batch file

... 20 @Machta the pipe must be escaped with a ^ sign before of it, inside the expression in parens. Example: for /f "tokens=3" %%i in ('route pri...
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Alternate table row color using CSS?

... In 2019: This is no longer the best solution. Use pure CSS. – Chiramisu Jul 8 '19 at 16:14 add a commen...
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PostgreSQL Autoincrement

...OLUMN user_id? – cela May 23 '18 at 20:49 I tried this method but I get an error: ERROR: syntax error at or near "DEF...
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Controlling the screenshot in the iOS 7 multitasking switcher

...as described here. – Charles A. Jan 20 '14 at 22:26 3 You don't need to do it in applicationWillR...
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Initialising an array of fixed size in python [duplicate]

...inked list? – user8773963 Jan 12 at 20:34 add a comment  |  ...
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Can't find the 'libpq-fe.h header when trying to install pg gem

... didn't work for me on ubuntu 11.04 durrantm@castleLinux2011:~/Dropbox_not_syncd/webs/3/linker$ gem install libpq-dev ERROR: Could not find a valid gem 'libpq-dev' (>= 0) in any repository durrantm@castleLinux2011:~/Dropbox_not_syncd/webs/3/linker$ – Mi...
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If statement in aspx page

... To use C# (C# Script was initialized at 2015) on ASPX page you can make use the following syntax. Start Tag:- <% End tag:- %> Please make sure that all the C# code must reside inside this <%%> . Syntax Example:- <%@ Import Namespace="System.Web....
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On design patterns: When should I use the singleton?

...r approach in my book – Rune FS Aug 20 '10 at 12:58 1 What the heck is a printer spooler? ...
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Any reason not to start using the HTML 5 doctype? [closed]

... at this blog post! Not really a fan of HTML5 http://www.webscienceman.com/2009/01/24/html-xhtml-html5-future-html/ share answered Jan 24 '09 at 19:48 ...