New thing I do in code
Ever since I found out that a GCC C extension causes a code block to return a value if you enclose it in round brackets, I’ve been using it in my code. What do you think?
self.bounds = ({
CGRect bounds = self.bounds;
bounds.size.height = self.currentYPosition + SHEETINSETY;
bounds;
});
I’m also using this for frame. The advantage is that with this construct I never forget to set the frame after altering it, which I did far too often otherwise.
self.helpButton = ({ // helpbutton
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:[UIImage imageNamed:@"ParentalControlQuestionMarkButton"]
forState:UIControlStateNormal];
CGRect buttonRect = innerBounds;
buttonRect.size = [button sizeThatFits:CGSizeMake(400, 400)];
buttonRect.origin.x = CGRectGetMaxX(innerBounds)-CGRectGetWidth(buttonRect);
button.frame = UIEdgeInsetsInsetRect(buttonRect, UIEdgeInsetsMake(0, -10, -20, -10));
[button addTarget:self action:@selector(helpAction:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:button];
button;
});
The major benefits of this one are:
- the instance variable in which I will store the generated object is in the first line, clearly showing what the next part of the code does. Prior to this, the assignment happend at the end.
- the stack variables declared and used don’t pollute other code in the same function/method. I can feel free to use very generic names (view,frame,rect,button) and not get into conflict with other parts.
Update: And it all works with CLANG due to the great design policy of CLANG to support most of the GCC extensions to maximise compatibility.
