Obj-C articles on (a) overview of debugging command-line, and (b) Frustrating 'block' syntax

Articles of the day for Objective-C programmers:

• Super useful, clear, and easy-to-read overview of options with the LLDB-based debugger command-line in Xcode 7:  Dancing in the Debugger — A Waltz with LLDB
• After struggling with the syntax to declare a variable as an Objective-C block, and then assign the block itself, and finally pass the block variable in a method call, I began to think I was too stupid to be a programmer any longer. A DuckDuckGo search showed me the problem is with  the syntax, not my brain: GoshDarnBlockSyntax  (another version of the URL substitutes the words "GoshDarn")