Tuesday, October 21, 2014

Why do you need colons for gesture recognizers

Apparently stuff that interacts with Objective C API's needs them..



What does the parenthesis in Swift does..


The completion parameter in animateWithDuration takes a block which takes one boolean parameter. In swift, like in Obj C blocks, you must specify the parameters that a closure takes:
UIView.animateWithDuration(0.2, animations: {
    self.blurBg.alpha = 1
}, completion: {
    (value: Bool) in
    self.blurBg.hidden = true
The important part here is the (value: Bool) in. That tells the compiler that this closure takes a Bool labeled 'value' and returns void.
For reference, if you wanted to write a closure that returned a bool the syntax would be
{(value: Bool) -> bool in
    //your stuff

Thursday, October 16, 2014

pip lxml fails

Not sure when these errors started showing up for lxml, but pip install lxml started failing without disabling these CLANG options:
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments

Friday, October 3, 2014

Internet Explorer 10's new compatibility view list

LinkedIn is listed as Emulate-IE9, which explains why anyone logging in via LinkedIn authentication has a User-Agent string that denotes IE9 even though they may have a later IE version.