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// I'm tired of extensions that automatically:
// - show welcome pages / walkthroughs
// - show release notes
// - send telemetry
// - recommend things
//
// This disables all of that stuff.
// If you have more config, leave a comment so I can add it!!

{

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macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

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Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

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Search only between uncommented lines (NCLOC - Non-Comment Lines Of Code):

First solution matches "keyWord" which is not commented with single line comment //
^*(?<!\/\/.*)keyWord    // this uses negative lookbehind

or another solution without lookbehind for regex engines, that does not support it:
^[^//]*keyWord

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\n
=============  HOST:  ==========\n
\n
           local_ip:  %{local_ip}\n
         local_port:  %{local_port}\n
          remote_ip:  %{remote_ip}\n
        remote_port:  %{remote_port}\n
\n
=======  CONNECTION:  ==========\n
\n

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Here's a list of mildly interesting things about the C language that I learned mostly by consuming Clang's ASTs. Although surprises are getting sparser, I might continue to update this document over time.

There are many more mildly interesting features of C++, but the language is literally known for being weird, whereas C is usually considered smaller and simpler, so this is (almost) only about C.

1. Combined type and variable/field declaration, inside a struct scope [https://godbolt.org/g/Rh94Go]

struct foo {
   struct bar {
 int x;

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Super Guide to the split-window tmux Subcommand (and Beyond)

Guide overview

tmux, like other great software, is deceptive. On the one hand, it's fairly easy to get set up and start using right away. On the other hand, it's difficult to take advantage of tmux's adanced power features without spending some quality alone time with the manual. But the problem with manuals is that they aren't geared toward beginners. They are geared toward helping seasoned developers and computer enthusiasts quickly obtain the

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Top HN posts

1. Ask HN: What books changed the way you think about almost everything?

2. Ask HN: What are the best MOOCs you've taken?

3. Ask HN: How to self-learn electronics?

4. Ask HN: Successful one-person online businesses?

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Presto Specific

• Don’t SELECT *, Specify explicit column names (columnar store)
• Avoid large JOINs (filter each table first)
  • In PRESTO tables are joined in the order they are listed!!
  • Join small tables earlier in the plan and leave larger fact tables to the end
  • Avoid cross joins or 1 to many joins as these can degrade performance
• Order by and group by take time
  • only use order by in subqueries if it is really necessary
• When using GROUP BY, order the columns by the highest cardinality (that is, most number of unique values) to the lowest.

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Saved HN stories

Generated using the hn2md.py script.

1. Stop Using Std::endl [video]
2. Memory Access Patterns Are Important (2012)
3. Deep Reinforcement Learning Explained