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Why is there no Tree class in .NET?
...plications that .NET is usually used for (business apps, data-moving apps, etc.). Still, I agree with you, it is strange that the BCL has no implementation at all.
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How to prevent vim from creating (and leaving) temporary files?
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I added this to my _vimrc file on Windows, and I'm still getting file~ files. Am I not doing something correctly?
– FilBot3
Aug 26 '15 at 14:48
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SQL SELECT speed int vs varchar
...ver see it. Depending upon CPU, implementation (client/server, web/script, etc) you probably will not see it until you hit few hundred comparisons on the DB server (maybe even a couple thousand comparisons before it is noticeable).
To void the incorrect dispute about hash comparisons. Most hashing...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...ith something like map or collect would be built in, and nobody has to see all the hoops the compiler has to go through to make them work smoothly. In Scala, it's all in a library, and therefore out in the open.
In fact the functionality of map that's supported by its complicated type is pretty adv...
How can I create a temp file with a specific extension with .NET?
... for guid clash is 1/2^128. Chance that it would happen 2 times is 1/2^256 etc. Dont bother!
– Migol
Aug 23 '12 at 8:03
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What does the “@” symbol mean in reference to lists in Haskell?
...hout the @, you'd have to choose between (1) or (2):(3).
This syntax actually works for any constructor; if you have data Tree a = Tree a [Tree a], then t@(Tree _ kids) gives you access to both the tree and its children.
s...
Can multiple different HTML elements have the same ID if they're different elements?
...th these elements from JS, pass them as selectors to libraries/APIs/Flash, etc.
– mrooney
May 13 '13 at 20:55
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Apache Spark: map vs mapPartitions?
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I'm seeing the opposite -- even with very small operations, its faster to call mapPartitions and iterate than call map. I am assuming that this is just the overhead of starting the language engine that will process the map task. (I'm in R, which may have more startup...
How to add a new audio (not mixing) into a video using ffmpeg?
...filter allows you to choose the desired channel layout (mono, stereo, 5.1, etc) and the sample rate.
ffmpeg -i video.mp4 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 \
-c:v copy -shortest output.mp4
Also see
Combine two audio streams into one
FFmpeg Wiki: Audio Channel Manipulation...
Array include any value from another array?
....include?(food) }
=> true
Benchmark script:
require "benchmark"
N = 1_000_000
puts "ruby version: #{RUBY_VERSION}"
CHEESES = %w(chedder stilton brie mozzarella feta haloumi).freeze
FOODS = %w(pizza feta foods bread biscuits yoghurt bacon).freeze
Benchmark.bm(15) do |b|
b.report("&, emp...