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Is it a good practice to place C++ definitions in header files?
...umental waste of time (and is not the case for libraries that don't change from compile to compile). When you split things between header/source and better yet, use forward declarations to reduce includes, you can save hours of recompiling when added up across a day.
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Collection versus List what should you use on your interfaces?
...mbiguity. Collection<T> and ReadOnlyCollection<T> both derive from ICollection<T> (i.e. there is no IReadOnlyCollection<T>). If you return the interface, it's not obvious which one it is and whether it can be modified. Anyway, thanks for your input. This was a good sanity...
How do you switch pages in Xamarin.Forms?
...thin a NavigationPage you should be able to access the Navigation property from within your page
– Jason
Aug 6 '14 at 21:28
1
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How to modify list entries during for loop?
...i] = s.strip()
print(a) # -> ['a', 'b', 'c', 'd']
Which is different from:
a[:] = [s.strip() for s in a]
in that it doesn't require the creation of a temporary list and an assignment of it to replace the original, although it does require more indexing operations.
Caution: Although you can...
Why always ./configure; make; make install; as 3 separate steps?
Every time you compile something from source, you go through the same 3 steps:
4 Answers
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Best practices for circular shift (rotate) operations in C++
...e branch and AND aren't optimized away). Use the _rotl / _rotr intrinsics from <intrin.h> on x86 (including x86-64).
gcc for ARM uses an and r1, r1, #31 for variable-count rotates, but still does the actual rotate with a single instruction: ror r0, r0, r1. So gcc doesn't realize that rotat...
Android: Scale a Drawable or background image?
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There is an easy way to do this from the drawable:
your_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="@color/bg_color"/>
<...
ASP.NET MVC controller actions that return JSON or partial html
...call the action method using Ajax. You could use one of the helper methods from the ViewPage such as
<%= Ajax.ActionLink("SomeActionMethod", new AjaxOptions {OnSuccess="somemethod"}) %>
SomeMethod would be a javascript method that then evaluates the Json object returned.
If you want to re...
Execute a command line binary with Node.js
I am in the process of porting a CLI library from Ruby over to Node.js. In my code I execute several third party binaries when necessary. I am not sure how best to accomplish this in Node.
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Download file of any type in Asp.Net MVC using FileResult?
...gested to me that I should use FileResult to allow users to download files from my Asp.Net MVC application. But the only examples of this I can find always has to do with image files (specifying content type image/jpeg).
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