Behrang Nevii Chubek

Get-IRR2USD Fish Function

Below is a small, tiny Fish shell function that, when ran, notifies you of the price of IRR against USD. For example:

$ get-irr2usd
> USD <-> IRR XCHG Price: 1036862IRR

It does not have any parameters, but it takes one extra step, and saves the result of your query into a file specified by the GET_IRR2USD_LOG_FILE environment variable. You can set this variable in $XDG_CONFIG_HOME/fish/config.fish. On most distributions, this is equivalent to ‍÷/.config/fish/config.fish.

Understanding Grammar Notations Used in PLT Textbooks ('Cheatsheet')

Chubak Bidpaa (Based on the 3rd edition of TDB, pages 198-199)

PLT textboks often use Greek and Latin letters to denote grammatic notations such as terminal, non-terminals, and other such concepts. For a beginner (like me!) it could be rather overwhelming. So I created this cheatsheet to be used as reference for any curious person or learners, alike.

	\documentclass[12pt,a4paper]{article}

	% --- Packages for General Utilities ---
	\usepackage[utf8]{inputenc}
	\usepackage[T1]{fontenc}
	\usepackage[english]{babel}
	\usepackage{lipsum} % filler text
	\usepackage{microtype} % better typography

	% --- Page and Graphics ---

	#include <ctype.h>
	#include <stdbool.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <uchar.h>

	#define FNV_32_PRIME 0x1000193U
	#define FNV_32_OFFSET_BASIS 0x811c9dc5U

	#include <stdarg.h>
	#include <stdbool.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#define OP_Add 1
	#define OP_And 2
	#define OP_Alloc 3

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <unistd.h>

	#include "object.h"
	#include "symtbl.h"

	symtbl_t *
	symtbl_new (size_t max_buckets)

	package lexer

	import (
	"fmt"
	"patina-lang/internal/token"
	"strings"
	"unicode/utf8"
	)

	const EOF rune = -1

	(* Core Structure *)
	HelpFile = FirstLine, { Section \| FreeContent }, [ Modeline ] ;
	FirstLine = TagDef, Tab, Description, Newline ;
	Section = Heading, SeparatorLine, { Block } ;
	FreeContent = { Block } ;

	(* Headings and Separators *)
	Heading = TextLine ;
	SeparatorLine = "=", "=", "=", { "=" }, Newline ; (* Min 3 '=' *)
	ColumnHeading = Text, " ~", Newline ;

	#define PHI 0x585f14dULL

	static inline uint32_t
	_skiena_hash32 (const uint8_t *msg, size_t msg_len)
	{
	static uint16_t rand_map[UCHAR_MAX] = {
	0x144, 0x1ab, 0x13c, 0x028, 0x1c3, 0x107, 0x193, 0x174, 0x00c, 0x160,
	0x142, 0x0fe, 0x01f, 0x1b0, 0x198, 0x160, 0x10f, 0x185, 0x015, 0x051,
	0x057, 0x138, 0x17e, 0x199, 0x1f5, 0x01e, 0x1f2, 0x01f, 0x174, 0x0b7,
	0x085, 0x0a5, 0x200, 0x14d, 0x188, 0x168, 0x1e4, 0x1ef, 0x15c, 0x14e,

	" Superscript
	iabbrev <buffer> ^0 ⁰
	iabbrev <buffer> ^1 ¹
	iabbrev <buffer> ^2 ²
	iabbrev <buffer> ^3 ³
	iabbrev <buffer> ^4 ⁴
	iabbrev <buffer> ^5 ⁵
	iabbrev <buffer> ^6 ⁶
	iabbrev <buffer> ^7 ⁷
	iabbrev <buffer> ^8 ⁸

Behrang Nevii Chubek

Get-IRR2USD Fish Function

Understanding Grammar Notations Used in PLT Textbooks ('Cheatsheet')

Chubak Bidpaa (Based on the 3rd edition of TDB, pages 198-199)

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