XeLabs/asm_book
2
0
Fork 0
mirror of https://github.com/pkivolowitz/asm_book.git synced 2026-06-21 00:26:46 +08:00
Code Issues Projects Releases Packages Wiki Activity

improved text

Browse source
This commit is contained in:
Perry Kivolowitz 2024-02-28 16:12:29 -06:00
parent 7c896ef362
commit 144acfb9d6
1 changed files with 8 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
section_1/structs/this.md
View file

@ -6,18 +6,17 @@ using. The exception to *this*, of course, are methods which are declared
as `static` which do *not* know which specific instance you are
referring to - `static` methods are instance-agnostic.
Like many of the cool features of C++, *this* seemingly magical
self-awareness is accomplished by slight-of-hand. In *this* chapter, we
examine how *this* is done.
In case the italics used up to now where ever the word *this* has been
used, the slight-of-hand involves the `this` pointer.
Like many of the cool features of C++, this seemingly magical
self-awareness of which instance a non-static method is called with, is
accomplished by slight-of-hand.
## `this` pointer
Every non-static method call employs a hidden first parameter. This
parameter is the `this` pointer which points to the specific instance
of the class being used.
Every non-static method call employs a hidden first parameter. That's
it. That's the slight of hand. The hidden argument is the `this`
pointer. It points to the base address of the class or struct. Then, the
particular members of the right instance, are accessed the same way as
any struct basing memory addresses off a pointer.
Here is the [source code](./this.cpp) to our test harness: