On 2015-07-14 9:59 AM, Kyle Huey wrote:
On Tue, Jul 14, 2015 at 6:57 AM, Ehsan Akhgari <[email protected] <mailto:[email protected]>> wrote:On 2015-07-13 3:07 PM, Jeff Gilbert wrote: On Sun, Jul 12, 2015 at 6:45 PM, Thomas Zimmermann <[email protected] <mailto:[email protected]>> wrote: Am 08.07.2015 um 16:36 schrieb smaug: Do you actually have any data how many % of Gecko devs would prefer not using aFoo? I strongly prefer 'aFoo' over 'foo' for the extra context that it gives to the variable. If we want to change anything we should rather introduce a separate prefix for output parameters. Which part of this extra context is useful? Repeating what Kats said elsewhere in the thread which seems to have been completely ignored in the pile of messages here: When debugging in a text based debugger such as gdb, sometimes you have a variable called aFoo which has the wrong value, and with the existing naming convention, you can quickly run "up" in the debugger to go to caller frames looking for the first time the argument is called something without an 'a' prefix, and then you look to see where the value was computed. If we remove this naming convention, you would have to do that work in every frame, which would make debugging the same scenario much more time consuming. Note that if you mostly use a graphical debugger such as Visual Studio, you may not rely on this because the debugger would show you more of the code in each frame, but I believe graphical debuggers are a niche among Mozilla developers. That assumes that the 'Foo' of aFoo is stable across function boundaries, which is not always the case.
No, it doesn't. In the scenario above, all you're looking for is when a value was computed, so you can quickly see an aDuck, aQuack, aFoopyFoo and determine that the value was passed down from the caller, until you get to a call site which passes in something that doesn't start with an 'a'.
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