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GCC -g vs -g3 GDB Flag: What is the Difference?
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From the docs:
-g
Produce debugging information in the operating system's native format (stabs, COFF, XCOFF, or DWARF 2). GDB can work with this
debugging information. On most systems that use stabs format, -g
enables use of...
Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...on, but that's the only way to partially iterate when using just foreach.
From one perspective, Iterable is the more demanding/powerful trait, as you can easily implement foreach using iterator, but you can't really implement iterator using foreach.
In summary, Iterable provides a way to pause, ...
How does Rails keep track of which migrations have run for a database?
.... If you roll back that migration, Rails will delete the corresponding row from schema_migrations.
For example, running a migration file named 20120620193144_create_users.rb will insert a new row with a version of 20120620193144 into the schema_migrations table.
You are free at any point to introd...
How can I view all historical changes to a file in SVN
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Slightly different from what you described, but I think this might be what you actually need:
svn blame filename
It will print the file with each line prefixed by the time and author of the commit that last changed it.
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What does the '.' (dot or period) in a Go import statement do?
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Here's an analogy for those coming from Python:
Go's import "os" is roughly equivalent to Python's import os
Go's import . "os" is roughly equivalent to Python's from os import *
In both languages, using the latter is generally frowned upon but there can b...
Why are functions in Ocaml/F# not recursive by default?
...s definition inside the body of a new definition. F# inherited this syntax from OCaml.
For example, superceding the function p when computing the Shannon entropy of a sequence in OCaml:
let shannon fold p =
let p x = p x *. log(p x) /. log 2.0 in
let p t x = t +. p x in
-. fold p 0.0
Note ...
Resize a large bitmap file to scaled output file on Android
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Not to my knowledge, but don't let that stop you from exploring this further.
– Justin
Jul 26 '10 at 12:18
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Should Jquery code go in header or footer?
... homepage the use of jQuery with jCarousel. When I moved the script blocks from the head to the end of the file I noticed the images used in the carousel would all be shown at once during page load, whereas when the script files were in the head the page would load more smoothly.
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How do I break a string over multiple lines?
... this is my very very very\nlong string\n
Here's the official definition from the YAML Spec 1.2
Scalar content can be written in block notation, using a literal style (indicated by “|”) where all line breaks are significant. Alternatively, they can be written with the folded style (denoted ...
“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning
...nter to a constant NSString object.
Using a NSString * const prevents you from reassigning kSomeConstantString to point to a different NSString object.
The method isEqualToString: expects an argument of type NSString *. If you pass a pointer to a constant string (const NSString *), you are passing...