jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

stuartjmoore

- (void)loadOrResizeOrSometing {
    /*
     *  After creating the text view or resizing the font, set the quoteWidth and contentInset.
     */
    WPTextContainer *textContainer = (WPTextContainer*)paragraphView.textContainer;
    textContainer.spaceWidth = [self widthForCharacter:@" "];
    textContainer.charWidths = @{
                                 @(8220) : @([self widthForCharacter:@"“"]),
                                 @(8216) : @([self widthForCharacter:@"‘"]),
                                 @('"')  : @([self widthForCharacter:@"\""]),

patrickt

A Quick and Dirty Lens primer

Why does Lens exist? Well, Haskell records suck, for a number of reasons. I will enumerate them using this sample record.

data User = User { login    :: Text
                 , password :: ByteString
                 , email    :: Text
                 , created  :: UTCTime
 }

subfuzion

There are certain files created by particular editors, IDEs, operating systems, etc., that do not belong in a repository. But adding system-specific files to the repo's .gitignore is considered a poor practice. This file should only exclude files and directories that are a part of the package that should not be versioned (such as the node_modules directory) as well as files that are generated (and regenerated) as artifacts of a build process.

All other files should be in your own global gitignore file:

• Create a file called .gitignore in your home directory and add any filepath patterns you want to ignore.
• Tell git where your global gitignore file is.

Note: The specific name and path you choose aren't important as long as you configure git to find it, as shown below. You could substitute .config/git/ignore for .gitignore in your home directory, if you prefer.

alexrudy

How to add custom (or system) fonts to matplotlib on OS X

Matplotlib expects to find .ttf fonts on your system. Newer versions of OS X use .dfont files. Converting them is easy, and putting them in a proper font path is also easy. The user font path on OS X is ~/Library/Fonts/, and matplotlib will find fonts here.

1. First, install what you'll need:

• matplotlib
• fondu (port install fondu, or brew install fondu)

2. Then find your desired font file. For system font files, the easiest way to do this is in the FontBook application. You can open FontBook in your utlities folder. Then select your font of choice, right click on it, and select "Show in Finder". You'll need to know where it is. Many system fonts are in places like /System/Library/Fonts/...
3. Move to your user's font directory ~/Library/Fonts/.
4. Use fondu to convert the OS-X specific font file (ends with .dfont) to .ttf.

tiann

<?xml version="1.0"?>
<root>
	<inputsourcedef>
      <name>MY_keylayout_zh_Hans</name>
      <inputsourceid_prefix>com.apple.inputmethod.SCIM.ITABC</inputsourceid_prefix>
  	</inputsourcedef>

  <item>
      <name>markdown</name>
      <identifier>private.quick_dotOfEnglish</identifier>

yrevar

{0: 'tench, Tinca tinca',
 1: 'goldfish, Carassius auratus',
 2: 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias',
 3: 'tiger shark, Galeocerdo cuvieri',
 4: 'hammerhead, hammerhead shark',
 5: 'electric ray, crampfish, numbfish, torpedo',
 6: 'stingray',
 7: 'cock',
 8: 'hen',
 9: 'ostrich, Struthio camelus',

johnfmorton

on openTerminal(location, remoteHost, serverPort)
	
    tell application "System Events"
        -- some versions might identify as "iTerm2" instead of "iTerm"
        set isRunning to (exists (processes where name is "iTerm")) or (exists (processes where name is "iTerm2"))
    end tell

    tell application "iTerm"
        activate
        set targetTab to ""

fgoinai

from functools import partial, reduce
from itertools import chain
from typing import Callable, Any, Sequence, Optional, Mapping


class FnChain:
    """
    FnChain(obj).map(...).filter(...).reduce(...)...

    API LIST:

steipete

        // tl;dr:  FileManager.default.url(for:in:appropriateFor:create:) has unexpected behavior in Simulator and creates temporary folders outside the tmp/ directory.

        let tmpDirClassic = NSTemporaryDirectory()
        print("tmpDirClassic: \(tmpDirClassic)")
        // This is the same code, just syntax sugar for NSTemporaryDirectory()
        // https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/FileManager.swift#L1420-L1422
        let tmpDirClassicNewShim = FileManager.default.temporaryDirectory
        print("tmpDirClassicNewShim: \(tmpDirClassicNewShim)")

        // Simulator: /Users/steipete/Library/Developer/CoreSimulator/Devices/31C05637-B9C9-482C-A6CE-D063A7CECF64/data/Containers/Data/Application/A68D11A4-88BA-4FCF-A8B1-D102945D0740/tmp/