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<script> async, defer, async defer, module, nomodule, src, inline - the cheat sheet

With the addition of ES modules, there's now no fewer than 24 ways to load your JS code: (inline|not inline) x (defer|no defer) x (async|no async) x (type=text/javascript | type=module | nomodule) -- and each of them is subtly different.

This document is a comparison of various ways the <script> tags in HTML are processed depending on the attributes set.

If you ever wondered when to use inline <script async type="module"> and when <script nomodule defer src="...">, you're in the good place!

Note that this article is about <script>s inserted in the HTML; the behavior of <script>s inserted at runtime is slightly different - see Deep dive into the murky waters of script loading by Jake Archibald (2013)

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/* Detection:             http://gist.github.com/df3fd4016e632344336f3227a6f159e6
 *  While userAgent sniffing is not ideal, arguably it is best in most cases
 *   throw in some proper feature detection & this will give you vast UI/UX control
 */
var userAgent = navigator.userAgent || navigator.vendor || window.opera || navigator.platform;
this.isMobile = (function (browserUserAgent) { return /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(browserUserAgent) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|n

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def rolling_window(array, window=(0,), asteps=None, wsteps=None, axes=None, toend=True):
    """Create a view of `array` which for every point gives the n-dimensional
    neighbourhood of size window. New dimensions are added at the end of
    `array` or after the corresponding original dimension.
    
    Parameters
    ----------
    array : array_like
        Array to which the rolling window is applied.
    window : int or tuple

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# vim: set fileencoding=utf-8 :
#
# How to store and retrieve gzip-compressed objects in AWS S3
###########################################################################
#
#   Copyright 2015 Vince Veselosky and contributors
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at

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//var tsv is the TSV file with headers
function tsvJSON(tsv){
 
  var lines=tsv.split("\n");
 
  var result = [];
 
  var headers=lines[0].split("\t");
 
  for(var i=1;i<lines.length;i++){

baharev

DTrace Sessions for iOS Development

DTrace is a comprehensive dynamic tracing framework created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time. Originally developed for Solaris, it has since been released to open source community in 2004 and has been ported to several other Unix systems.

Apple ported DTrace for OS X Leopard, including a GUI called Instruments and made it co-exist with the existing legacy stack of performance troubleshooting toolkits.

We are going to tame this beast to help us hunt down and eliminate all sorts of application and system-wide troubles when doing development of iOS and OS X apps.

the chat

baharev

data Lit = Lit Int
data Add l r = Add l r

class Eval x where
  eval :: x -> Int

instance Eval Lit where
  eval (Lit x) = x

instance (Eval l, Eval r) => Eval (Add l r) where