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What is the yield keyword used for in C#?
...returns an object that implements the IEnumerable<object> interface. If a calling function starts foreaching over this object, the function is called again until it "yields". This is syntactic sugar introduced in C# 2.0. In earlier versions you had to create your own IEnumerable and IEnumerato...
ActionBarCompat: java.lang.IllegalStateException: You need to use a Theme.AppCompat
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If you are extending ActionBarActivity in your MainActivity, you will have to change the parent theme in values-v11 also.
So the style.xml in values-v11 will be -
<!-- res/values-v11/themes.xml -->
<?xml version=...
How to crop an image using C#?
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Agreed, but note that if the cropArea crosses img boundary, it gives a "Out of memory" exception.
– ChrisJJ
Oct 29 '11 at 14:41
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How to add a margin to a table row [duplicate]
...e containing many rows. Some of these rows are class="highlight" and signify a row that needs to be styled differently and highlighted. What I'm trying to do is add some extra spacing before and after these rows so they appear slightly separated from the other rows.
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Disable browser cache for entire ASP.NET website
... Putting this in Application_BeingRequest can cause some issues. If your images get routed through the .net runtime (which can happen if you're using wildcard mapping for nice urls) then no images will be cached on the browser. This can REALLY slow down your page load times as each page re...
How to get the current user in ASP.NET MVC
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If you need to get the user from within the controller, use the User property of Controller. If you need it from the view, I would populate what you specifically need in the ViewData, or you could just call User as I think it...
Changing default encoding of Python?
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If you get this error when you try to pipe/redirect output of your script
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-5: ordinal not in range(128)
Just export PYTHONIOENCODING in console and then...
How to parse XML to R data frame
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Helpful answer. If anybody else stumbles across it, here's the link to a tutorial by Hadley on using xml2: blog.rstudio.com/2015/04/21/xml2
– Richard Erickson
Feb 1 '18 at 15:30
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POST JSON to API using Rails and HTTParty
...on rails. You just have to mount the engine and go to the url that you specified, i.e. “localhost:3000/api_explorer” to see it. It’s a way of documenting an API also, reading the webservices specification from a file. The gem is named ‘api_explorer’ and the repo is github.com/toptierlabs/a...
Determine if code is running as part of a unit test
...ve a unit test (nUnit). Many layers down the call stack a method will fail if it is running via a unit test.
19 Answers
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