dqpb

personal blog

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war with eof()

(cat myfile -) | ./a.out 

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Lecture 1A | MIT 6.001 Structure and Interpretation, 1986

Overview and Introduction to Lisp Despite the copyright notice on the screen, this course is now offered under a Creative Commons license: BY-NC-SA. Details ...

“Well, similarly, I think in the future, people will look back and say, yes those primitives in the 20th century were fiddling around with these gadgets called computers, but really what they were doing is starting to learn how to formalize intuitions about process, how to do things, starting to develop a way to talk precisely about how-to knowledge, as opposed to geometry that talks about what is true.” - Abeslon

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x86 Assembly Instruction Operands

Three types:

- Immediate

- Register

- Memory

Mov Instruction possibilities:

Immediate -> Register 

Immediate -> Memory

Register -> Register

Register -> Memory

Memory -> Register

Memory <-> Memory (X) - x86 restriction: memory cannot be moved directly to another memory. 

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How to limit template generic types in C++?

specialization

type traits

concepts

thx to utilforever, 커헠

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Ncurses Howto

http://www.ibiblio.org/pub/Linux/docs/HOWTO/NCURSES-Programming-HOWTO

https://wiki.kldp.org/wiki.php/NCURSES-Programming-HOWTO

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EBO

http://en.cppreference.com/w/cpp/language/ebo

https://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Empty_Base_Optimization

https://stackoverflow.com/questions/4325144/when-do-programmers-use-empty-base-optimization-ebo

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Signed and Unsigned arithmetic

Signed is implicitly converted to Unsigned...

https://stackoverflow.com/questions/50605/signed-to-unsigned-conversion-in-c-is-it-always-safe

1 < -1 

lol

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gcc -pedantic option

void pointer arithmetic <- no warning in gcc even though -Wall -Wextra

-pedantic option enabled the warning.

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Printable PDF The proper use of C's volatile keyword is poorly understood by many programmers. This is not surprising, as most C texts dismiss it in a sentence or two. This article will teach you the proper way to do it. Have you experienced any of the following in your C or C++ embedded code?

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https://stackoverflow.com/questions/1143262/what-is-the-difference-between-const-int-const-int-const-and-int-const

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Are typedef and #define the same in c?

I wonder if typedef and #define are the same in c?

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typedef int * int_pointer

is this a good or bad idea?

ref: https://stackoverflow.com/questions/750178/is-it-a-good-idea-to-typedef-pointers

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c printf cannot print negative hex...

Therefore the value of -1 is forced to print ffffffff no matter what...

Even if char c = -1 will be printed out as ffffffff (4 byte), while it’s real bit level representation is just 0xff (1 byte). 

Must use ‘unsigned char’.

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Compiler Design Tutorial for Beginners - Learn Compiler Design in simple and easy steps starting from basic to advanced concepts with examples including Overview, Lexical Analyzer, Syntax Analysis, Semantic Analysis, Run-Time Environment, Symbol Tables, Intermediate Code Generation, Code Generation and Code Optimization.

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dereferencing pointer to integer array

I have a pointer to integer array of 10. What should dereferencing this pointer give me? Eg: #include main() { int var[10] = {1,2,3,4,5,6,7,8,9,10}; int (*ptr) [10] = &amp...

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Buffer Overflow Attack - Computerphile

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How secure is 256 bit security?