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The differences between .build, .create, and .create! and when should they be used?

... I'm selected this one as the most correct answer because of the mention on being able to link the associated models with them - that's an interesting and important difference I think over using .new and .save. Which takes a littl...
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How do I activate a virtualenv inside PyCharm's terminal?

... PyCharm 4 now has virtualenvs integrated in the IDE. When selecting your project interpreter, you can create, add, or select a virtualenv. They've added a "Python Console" that runs in the configured project interpreter. More info here. ...
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Where and how is the _ViewStart.cshtml layout file linked?

...wStart.cshtml allows us to write code, we can optionally make our Layout selection logic richer than just a basic property set. For example: we could vary the Layout template that we use depending on what type of device is accessing the site – and have a phone or tablet optimized layout f...
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How can I prevent the “You have mixed tabs and spaces. Fix this?” message?

...ch because of the way things laid out looked just like a space. Of course, selecting that class? Impossible, as it was "classA[tab]classB". – David T. Macknet Feb 9 '16 at 16:57 8 ...
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Using Rails 3.1 assets pipeline to conditionally use certain css

...r the entirety of the stylesheets. I'm not sure if there's another way to selectively include part of the styles unless it's on a separate stylesheet. At least this way we compile to only a handful of CSS files. – gcastro Sep 8 '11 at 17:16 ...
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Checkout one file from Subversion

...ithin the repository containing all the files that you wish to work on and Select Checkout. Step 3: Within new popup window, ensure that the checkout directory points to the correct location on your local PC. There will also be a dropdown menu labeled “checkout depth”. Choose “Only this item...
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How to execute XPath one-liners from shell?

... You should try these tools : xmlstarlet : can edit, select, transform... Not installed by default, xpath1 xmllint : often installed by default with libxml2-utils, xpath1 (check my wrapper to have --xpath switch on very old releases and newlines delimited output (v < 2.9.9) ...
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Scheduling R Script

...g go to **TOOLS -> ADDINS ->BROWSE ADDINS ->taskscheduleR -> Select it and execute it.** share | improve this answer | follow | ...
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How to use a WSDL file to create a WCF service (not make a call)

...for. Try "Contract First" and WCF. or "WSDL First" and WCF. Here is a selection: Basic overview of WSDL-First development with WCF and SvcUtil.exe. WSCF - A free add-in to Visual Studio enabling Contract-First design with WCF Introduction to WSCF A walkthrough of using WSCF The WSCF proje...
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onclick() and onblur() ordering issue

...hat this does have some minor side effects as well, e.g. not being able to select text by clicking within the element. Can't think of too many cases where this would be an issue, just that it feels a little funny. – Rei Miyasaka May 6 at 5:21 ...