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Computer Sciences

Some notes on computer science, mostly online sources.

Programming Languages

Racket

Load racket package, when #lang sicp is used

  • load a whole package 
    (#%require <racket package name>)

;; e.g.
(#%require racket/base)   ; load racket base
(#%require sicp-pict)     ; load sicp picture package
  • load selected identifiers from package 
    (#%require (only <racket package name>
                 <identifiers, space seperated>))

;; e.g.
; load `provide` and `all-defined-out` from racket base,
; and load these two only
(#%require (racket/base provide all-defined-out))

Load sub file, when #lang sicp is used

  1. export identifiers in the included sub file 
    ;; sub file
; export selected identifiers
(provide <identifiers, space seperated>)

; export all defined identifiers in the current file
(provide (all-defined-out))

;; e.g. 1
(#%require (only racket/base provide))

(provide square double)
(define (square x) (* x x))
(define (double x) (+ x x))

;; e.g. 2
(#%require (only racket/base provide all-defined-out))
(provide (all-defined-out))

(define (square x) (* x x))
(define (double x) (+ x x))
(define (halve x)
  (if (even? x)
      (/ x 2)
      (error "ERROR: invalid input, not even")))
  2. load sub file in the main file 
    ;; main file
(#%require "<path to sub file>")

;; e.g.
; load file with relative path
(#%require "exercise_1.43.rkt")
(#%require "../chapter02/exercise_2.20.rkt")

Run code only when current file is not required as a module

#lang sicp

(#%require (only racket/base module+))
(module+ main
  ...)  ; the body accumulates
        ; and `main` is executed at the end of current module

Scheme

C

Textbook

The C Programming Language, 2nd Edition, by Kernighan and Ritchie (K&R2)

  • Solutions provided by clc-wiki, an offshoot of the comp.lang.c newsgroup

Discussion

Python

Other Languages, mostly markup ones

Markdown

HTML

  • Default link colors (ref to HTML Spec, answer) 
    :link { color: #0000EE; }
:visited { color: #551A8B; }
:link:active, :visited:active { color: #FF0000; }
:link, :visited { text-decoration: underline; cursor: pointer; }

JSON (JavaScript Object Notation)

ABNF (Augmented BNF)

EBNF (Extended BNF)

General Books

Introduction to Computation and Programming Using Python, Second Edition

How to Design Programs (2e)

  • Online full-text, both 1st (with full solutions) and 2nd editions.
  • From slides of talk Matthias Felleisen gave at RacketCon 2011, there is a four-books plan with HtDP and How to Design Components (now called Classes, see webpage of HtDC) the first two.

Structure and Interpretation of Computer Programs (SICP)

Algorithms in a Nutshell (2e)

Category Theory for Programmers, by Bartosz Milewski

Parsing Techniques - A Practical Guide, by Dick Grune and Ceriel J.H. Jacobs

Pattern Recognition and Machine Learning, by Christopher Bishop

Dive into Deep Learning

  • Authors: Aston Zhang, Zack C. Lipton, Mu Li, and Alex J. Smola
  • Introduction: A free and interactive deep learning book for students, engineers, and researchers.
  • Online version: en, zh-cn

Advanced Programming in the UNIX Environment

http://www.apuebook.com/

Tools

SSH

MySql

When SHOW DATABASES; showing

ERROR 1449 (HY000): The user specified as a definer ('mysql.infoschema'@'localhost') does not exist

after updating the mysql, run

mysql_upgrade --force -uroot -p

to upgrade tables.

Related links: