Notice that the class has an identical var that is used in several
places. It is unknown if the original programmer intended to use the
member var in this function, but what is actually being done is a new
var being created, changed and returned. This may not respect the
original intention, but it does preserve the original mechanics.
Parameters with the same name as class members are ripe for introducing
bugs. The fact that the "this->" syntax is optional creates confusion
for maintaining programmers who can only guess at the intention.
Casting to void should shut up GCC about
error: statement has no effect [-Werror=unused-value]
static_cast<void>() is possible for all current types. Supposedly an old
C style cast could also be used, but they should not be used in modern
C++ code.
GCC gave error
../src/tabcontrollers/MoveCenterTabController.cpp:57:67: error:
operation on
‘((advsettings::MoveCenterTabController*)this)->advsettings::MoveCenterTabController::lastMoveButtonClick[0]’
may be undefined [-Werror=sequence-point]
Because assigning a value to itself twice is undefined behavior. It is
highly likely that intended behavior was to initialize both array
members to the same value at once.
Mostly casts and unsigned to signed comparisons.
Testing to ensure that the int isn't below 0. If it is, it can't be used
in the array later anyway. After we're sure it isn't below 0 it's safe
to static_cast<size_t>().
The warnings in dummy functions are preventing the project from being
compiled with warnings as errors.
There were two options:
* Using a define to create a noop (chosen option).
* Commenting out the variable name, leaving only the type.
The first option was chosen because the second option would leave out
information from the IDE and compiler, while the first option wouldn't.
The intent is also clearer with the first option, otherwise it would
likely be necessary to leave comments with every single parameter that
was commented out.
Vasily
Robin Appelman
ykeara
Moritz
Meredith
Moritz Ls
matzman