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What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()

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[1, 2, 3, 4].map(val => val + 1).filter((a, b) => a > b);

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let ourValue = [1, 2, 3, 4].map(val => val + 1).sort((a, b) => a > b);

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$('#someElementId').removeClass('hidden').addClass('display');

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class Animal {
  constructor() {
    this.pace = null;
  }
  
  walk() {
    this.pace = "walking";
    
    console.log('our animal is', this.pace);
    

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Idiomatic React Testing Patterns

Testing React components seems simple at first. Then you need to test something that isn't a pure interaction and things seem to break down. These 4 patterns should help you write readable, flexible tests for the type of component you are testing.

Setup

I recommend doing all setup in the most functional way possible. If you can avoid it, don't set variables in a beforeEach. This will help ensure tests are isolated and make things a bit easier to reason about. I use a pattern that gives great defaults for each test example but allows every example to override props when needed:

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STUN implementations

• stund
• Content: server daemon and test client for STUN, RFC-3489 only
• URL does not load, the project seems abandoned
• The code is also available on SourceForge, last update was on January 2012
• TCP and TLS modes not supported
• The server needs two IPs, it’s mandatory and can not be configured
• C++, no extra libraries required, Windows port available
• Version = 0.97 (0.96 package available on Debian, 5 years without updates)

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Here are some tidbits from my Glass Services teardown (not actually an APK teardown, more like a odex teardown)

In summary: nothing groundbreaking; everything in here is known anyways.

Eye Gestures

In GlassGestureService, the service detecting winks, there's this enum:

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Reciprocal Needs in the Employment Relation

We can look at two sides of the management coin: What do the individuals get out of it? And what benefit does the whole system derive from it?

I will disregard any benefits that accrue to managers just by holding the position of managing. Those are just circular logic. Circular logic abounds in discussions of management and hierarchy. For example, consider status reports. It will be said that status reports are necessary so managers know what their employees are working on. It’s

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import sys
import os
import glob

def get_contents(file):
    with open(file, mode='rU') as f:
        for line in f:
            yield line

def write_contents(file, iterable):