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This is pretty neat, though I found myself doing similar things in small test files when I was first learning C and printing the results. C compile times suck,

This is pretty neat, though I found myself doing similar things in small test files when I was first learning C and printing the results. C compile times suck, but with like a 10 line program or so to toy with a language semantic, it was practically instant (in 2007). But then again I had never used a dynamic language like Ruby/Python before then so I didn't know better. More people should be hopping on this bandwagon though because debuggers are awesome. I typically find myself using `po` the most in LLDB (Xcode, iOS development) but it's insanely useful especially when Xcode refuses to show me the values of something I want in the Variables View, ex. NSDictionary keys/values, objects in an NSArray, etc. I'll also use it sometimes to execute simple commands like `[myArrayObject count]` when the Variables View refuses to show me property values. Sometimes Xcode's GUI bits just don't cut it! There's more info on what you can do with LLDB here: http://lldb.llvm.org/tutorial.html http://lldb.llvm.org/tutorial.html And if you've used GDB, this might be of use: http://lldb.llvm.org/lldb-gdb.html http://lldb.llvm.org/lldb-gdb.html

geoka9 14y ago
> C compile times suck Can I ask you what you're comparing with? I can compare with C++, Scala and Go. The first two are horrible in that department when compared with C. Go's compiles are blazingly fast.
- jparishy 14y ago
  I'm not really comparing it to anything, just speaking from experience of having waited many hours waiting for C programs to compile in the past.
  - ghshephard 14y ago
    Isn't the job of your Makefile to require recompilation of only those source files that have changed? I just did a random google of "how long to compile linux kernel" and came across this: https://plus.google.com/u/0/+LinusTorvalds/posts/6BxnSisp8fU https://plus.google.com/u/0/+LinusTorvalds/posts/6BxnSisp8fU One nice excerpt: "Total build time after make clean is about 1min, give or take 10secs. `touch include/linux/version.h` is 6 seconds to rebuild. Just doing a rebuild without touching anything is 2.7secs. For a defconfig, it does build a godawful amount of modules :^) 'allnoconfig; make' is 16 seconds..."
    - infinite8s 14y ago
      You've probably never tried compiling the linux kernel back in the late 90s with a top of the line machine (hint - gcc was slow, it would take over 35 minutes or so to compile from scratch) ;)

geoka9 14y ago

> C compile times suck Can I ask you what you're comparing with? I can compare with C++, Scala and Go. The first two are horrible in that department when compared with C. Go's compiles are blazingly fast.

jparishy 14y ago
I'm not really comparing it to anything, just speaking from experience of having waited many hours waiting for C programs to compile in the past.
- ghshephard 14y ago
  Isn't the job of your Makefile to require recompilation of only those source files that have changed? I just did a random google of "how long to compile linux kernel" and came across this: https://plus.google.com/u/0/+LinusTorvalds/posts/6BxnSisp8fU https://plus.google.com/u/0/+LinusTorvalds/posts/6BxnSisp8fU One nice excerpt: "Total build time after make clean is about 1min, give or take 10secs. `touch include/linux/version.h` is 6 seconds to rebuild. Just doing a rebuild without touching anything is 2.7secs. For a defconfig, it does build a godawful amount of modules :^) 'allnoconfig; make' is 16 seconds..."
  - infinite8s 14y ago
    You've probably never tried compiling the linux kernel back in the late 90s with a top of the line machine (hint - gcc was slow, it would take over 35 minutes or so to compile from scratch) ;)