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Prompt for user input in PowerShell
... you run the code at the link posted in @Christian's comment, you can find out the return type by piping it to Get-Member (for example, $results | gm). The result is a Dictionary where the key is the name of a FieldDescription object used in the prompt. To access the result for the first prompt in t...
Applicatives compose, monads don't
...to choose between the values of two computations at and af, having carried out both, perhaps to tragic effect.
The monadic version relies essentially on the extra power of (>>=) to choose a computation from a value, and that can be important. However, supporting that power makes monads hard t...
filter items in a python dictionary where keys contain a specific string
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How about a dict comprehension:
filtered_dict = {k:v for k,v in d.iteritems() if filter_string in k}
One you see it, it should be self-explanatory, as it reads like English pretty well.
This syntax requires Python 2.7 or greate...
What is the rationale for all comparisons returning false for IEEE754 NaN values?
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The distributive law does not hold.
There are floating-point numbers without inverses.
I could go on. It is not possible to specify a fixed-size arithmetic type that satisfies all of the properties of real arithmetic that we know and love. The 754 committee has to decide to bend or break some ...
What's an elegant way to conditionally add a class to an HTML element in a view?
...ass to an html element based on a condition. The problem is I can't figure out a clean way of doing it. Here's an example of the stuff I've tried:
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ASP.NET MVC - Should business logic exist in controllers?
...n article a couple of days ago that hit a point that I've been curious about for some time: should business logic exist in controllers?
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How to implement my very own URI scheme on Android
... element. You setup an intent filter with the <data> element filled out, and you'll be able to create your own scheme. (More on intent filters and intent resolution here.)
Here's a short example:
<activity android:name=".MyUriActivity">
<intent-filter>
<action an...
What do single quotes do in C++ when used on multiple characters?
I'm curious about this code:
5 Answers
5
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AES Encryption for an NSString on the iPhone
... it as you see fit. I repaired your code here. Also, you may want to point out that without that adapted code, it won't compile. So, I got it to work on a Cocoa application on El Capitan with XCode7. Now what I'm trying to do is figure out how to Base64Encode/Base64Decode this data so that it's tran...
How much size “Null” value takes in SQL Server
...art of the first article is a bit misleading. The article is not talking about the cost of storing a NULL value, but the cost of having the ability to store a NULL (i.e the cost of making a column nullable). It's true that it costs something in storage space to make a column nullable, but once you h...