City in Japan Updated +Created
Common Table Expression Updated +Created
rm -f tmp.sqlite
sqlite3 tmp.sqlite 'create table t(i integer)'
sqlite3 tmp.sqlite 'insert into t values (1), (2)'
sqlite3 tmp.sqlite 'with mycte as ( select * from t ) delete from mycte where i = 1'
sqlite3 tmp.sqlite 'select * from t'
Digital storage oscilloscope Updated +Created
Korean art Updated +Created
Linear function Updated +Created
The term is not very clear, as it could either mean:
Science and Technology Facilities Council Updated +Created
Computer chess Updated +Created
Crow Updated +Created
Culture of Japan Updated +Created
Dimentionality reduction Updated +Created
Superconductor coil experiment video Updated +Created
TODO!!! Even this is hard to find! A clean and minimal one! Why! All we can find are shittly levitating YBCO samples in liquid nitrogen! Maybe because liquid helium is expensive?
Video 1.
First 10T Tape Coil by Mark Benz
. Source. Dr. Mark Benz describes the first commercially sold superconducting magnet made by him and colleagues in 1965. The 10 Tesla magnet was made at GE Schenectady and they sold magnets to research facilities world wide before the team formed Intermagnetics General. IGC and Carl Rosner went on to pioneer MRI technology.
Super Mario 64 A press challenge Updated +Created
Video 1.
Video outlining the 18 unique A presses missing for 120-stars at the time. This was superseded later. with many other discoveries.
Source. The 23 Remaining A Presses by Pannenkoek2012 (2018)
Video 2.
Watch for Rolling Rocks 0.5x A Presses by Pannenkoek2012 (2016)
Source. This is one of the most elaborate explained videos.
x86 Paging Tutorial / Linux source tree Updated +Created
In v4.2, look under arch/x86/:
  • include/asm/pgtable*
  • include/asm/page*
  • mm/pgtable*
  • mm/page*
There seems to be no structs defined to represent the pages, only macros: include/asm/page_types.h is specially interesting. Excerpt:
#define _PAGE_BIT_PRESENT   0   /* is present */
#define _PAGE_BIT_RW        1   /* writeable */
#define _PAGE_BIT_USER      2   /* userspace addressable */
#define _PAGE_BIT_PWT       3   /* page write through */
arch/x86/include/uapi/asm/processor-flags.h defines CR0, and in particular the PG bit position:
#define X86_CR0_PG_BIT      31 /* Paging */
Chinese thing better known in the West as Japanese Updated +Created
Computer science bibliography Updated +Created
Hund's second rule Updated +Created
Taxation in the United Kingdom Updated +Created

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