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How do I make a column unique and index it in a Ruby on Rails migration?
.... :column_name_n], unique: true, name: 'my_custom_index_name'
More info - http://apidock.com/rails/ActiveRecord/ConnectionAdapters/SchemaStatements/add_index
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Converting an int to std::string
...xample, itoa
It even appears to be faster than stringstream or scanf:
http://www.boost.org/doc/libs/1_53_0/doc/html/boost_lexical_cast/performance.html
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How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?
For example, running wget https://www.dropbox.com results in the following errors:
9 Answers
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如何获取IE (控件)的所有链接（包括Frameset, iframe） - 其他 - 清泛IT社...
...nbsp; }
}iframe 跨域访问(cross frame) zz from : http://codecentrix.blogspot.com/ ... cument-returns.html
由于安全性限制, 为防止跨域脚本攻击, 当frames 跨域的时候, IHTMLWindow2::get_document 调用将返回 E_ACCESSDENIED .
下面函数 HtmlWindowTo...
Git format-patch to be svn compatible?
...r making a diff against the the latest svn changeset and the given commit:
http://www.mail-archive.com/dev@trafficserver.apache.org/msg00864.html
#!/bin/sh
#
# git-svn-diff
# Generate an SVN-compatible diff against the tip of the tracking branch
TRACKING_BRANCH=`git config --get svn-remote.svn.fetc...
How do you round a float to two decimal places in jruby
...mber almost any way you like, and lots more.
Full sprintf documentation: http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-sprintf
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How do you convert a time.struct_time object into a datetime object?
... 0, 0, 1, -1). I have encountered this after parsing the Date header on an HTTP request which returned this tuple.
– user3820547
Jul 9 '14 at 14:20
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Can you Run Xcode in Linux?
...dy suggested Vagrant yet, so here it is, Vagrant box for OSX
vagrant init https://vagrant-osx.nyc3.digitaloceanspaces.com/osx-sierra-0.3.1.box
vagrant up
and you have a MACOS virtual machine. But according to Apple's EULA, you still need to run it on MacOS hardware :D But anywhere, here's one to ...
Detecting if an NSString contains…?
..."is"];
There's an interesting post on how to "retrofit" it to iOS7 here:
http://petersteinberger.com/blog/2014/retrofitting-containsstring-on-ios-7/
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How do you underline a text in Android XML?
...s</a>]]></string>
and you can know compatible tag here :
http://commonsware.com/blog/Android/2010/05/26/html-tags-supported-by-textview.html
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