eczn

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

eczn

%GetOptimizationStatus return a set of bitwise flags instead of a single value, to access the value, you need to take the binary representation of the returned value. Now, for example, if 65 is returned, the binary representation is the following:

(65).toString(2).padStart(12, '0');
// 000001000001

Each binary digit acts as a boolean with the following meaning:

eczn

Per https://code.google.com/p/v8/codesearch#v8/trunk/src/runtime.cc


%CreateSymbol
%CreatePrivateSymbol
%CreateGlobalPrivateSymbol
%NewSymbolWrapper
%SymbolDescription
%SymbolRegistry
%SymbolIsPrivate

eczn

;  ___           _        __ ___  __ ___
; / __|_ _  __ _| |_____ / /| __|/  \_  )
; \__ \ ' \/ _` | / / -_) _ \__ \ () / /
; |___/_||_\__,_|_\_\___\___/___/\__/___|

; An annotated version of the snake example from Nick Morgan's 6502 assembly tutorial
; on http://skilldrick.github.io/easy6502/ that I created as an exercise for myself
; to learn a little bit about assembly. I **think** I understood everything, but I may
; also be completely wrong :-)

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/*
  UPDATED for 2023 - Now much simpler. The old tricks are no longer needed.

  The following code makes an 800×600 canvas that is always as sharp as possible for the device.

  You still draw on it as if it's the logical size (800×600 in this case), but everything just
  looks sharper on high-DPI screens. Regular non-sharp screens are not affected.
*/

const width = 800

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/*
 * https://github.com/netnr/workers
 *
 * 2019-10-12 - 2022-05-05
 * netnr
 *
 * https://github.com/Rongronggg9/rsstt-img-relay
 *
 * 2021-09-13 - 2022-05-29
 * modified by Rongronggg9

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#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/slab.h>

struct birthday {
	int day;
	int month;
	int year;

eczn

// my brain decided to ask the question: yknow, i want you to think about the y combinator --
// like, what is it. like what the fuck girl, cmon, you have a comp sci degree, you should know this, and understand it and shit

// and so i was like fiiiiiiiiiiiiiiine gosh, lets see if typescript can handle the typing, and play around with it

// so i looked up a javascript implementation, and played with the type defintion until it
// matched up and then i was like oh: thats what the type definition of the functions in it are.
// i get it now. that's pretty cool. the main interesting thing is a the inner function that takes itself
// and returns the function initially passed to the outer function. neato.

eczn

# 设置
git config --global https.proxy http://127.0.0.1:1080
git config --global http.proxy https://127.0.0.1:1080

# 取消
git config --global --unset http.proxy
git config --global --unset https.proxy

# 删除 npm proxy 配置
npm config delete proxy