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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...table, similar to mathematical tables of old, using adjustments to the low-order bits to save on transistors.)
The reason why it's available is that it is the initial estimate used by the FPU for the "real" square root algorithm.
There's also an approximate reciprocal instruction, rcp. Both of these...
What are the most-used vim commands/keypresses?
...arrow keys to move around, selecting text with the mouse, using the menus, etc. Then when something is slowing you down, you look up the faster way to do it, and gradually add more and more commands. You might learn one new command per day for a while, then it will trickle to one per week. You'll...
What's the cleanest way of applying map() to a dictionary in Swift?
...
With Swift 5, you can use one of the five following snippets in order to solve your problem.
#1. Using Dictionary mapValues(_:) method
let dictionary = ["foo": 1, "bar": 2, "baz": 5]
let newDictionary = dictionary.mapValues { value in
return value + 1
}
//let newDictionary = dict...
How to get div height to auto-adjust to background size?
...ore hand which you usually do. This will let you add overlay text, titles etc. with no negative padding or absolute positioning of the image. They key is to set the padding % to match the image aspect ratio as seen in the example below. I used this answer and essentially just added an image backgr...
How can I get jquery .val() AFTER keypress event?
... This is also great when you need to ignore pressing arrow keys, shift etc. in input field.
– hovado
Nov 19 '15 at 14:02
2
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Scrollview vertical and horizontal in android
... }
return true;
}
});
You can change the order of the scrollviews. Just change their order in layout and in the code. And obviously instead of WateverViewYouWant you put the layout/views you want to scroll both directions.
...
Incrementing in C++ - When to use x++ or ++x?
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@BeowulfOF: The answer implies an order which doesn't exist. There is nothing in the standard to say when the increments take place. The compiler is entitled to implement "x += i++" as: int j = i; i=i+1 ; x += j;" (ie. 'i' incremented before "processing th...
Using multiple let-as within a if-statement in Swift
... 3, you can use optional chaining, switch statement or optional pattern in order to solve your problem.
1. Using if let (optional binding / optional chaining)
The Swift Programming Language states about optional chaining:
Multiple queries can be chained together, and the entire chain fails g...
Compiling/Executing a C# Source File in Command Prompt
...h knowledge of some sort of build tool such as NAnt, MSBuild, FinalBuilder etc. These tools provide a complete build environment, not just the basic compiler.
On a Mac
On a Mac, syntax is similar, only C sharp Compiler is just named csc:
$ csc /target:exe /out:MyApplication.exe MyApplication.cs ...
How to check if IEnumerable is null or empty?
...egil meh - I can't get excited about that. As long as the intent is clear, etc.
– Marc Gravell♦
Feb 18 '11 at 22:55
6
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