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Re: what's difference between bless and tie?

by moritz (Cardinal)
on Dec 23, 2012 at 13:32 UTC ( #1010094=note: print w/replies, xml ) Need Help??


in reply to what's difference between bless and tie?

bless allows you to calls methods on the blessed object.

tie allows you to override built-in operations on variables, namely reading from/assigning to scalars, and list and hash operations like indexing, exists, delete etc.

So in some sense, tie works on a variable and bless works on a thing that is stored in a variable.

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Re^2: what's difference between bless and tie?
by anaconda_wly (Scribe) on Jan 07, 2013 at 09:02 UTC
    "bless allows you to calls methods on the blessed object." , and "the blessed object" actually a data structure saying a hash and bless tells Perl how the hash can be used(methods defined in package). I still feel they're hard to distinguish in their very initial goal.

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[stevieb]: well, what happens is the Arduino 'listens' for requests r/w, and does the appropriate thing when it's interrupted based on the 'register' address sent in. It's ugly as it was my first attempt, but I've got great new ideas I'm just sitting.
[stevieb]: ...down to implement now. Here's the sketch as it currently sits
[shmem]: well I use I2C and SPI and stuff, but creating a pseudo chip looks to me like lot of indirection and memory clutter... not?
[choroba]: Are you going to use the device soon? Related to your comment about "not having much time to do a lot of coding"...
[stevieb]: sure, but I'm just learning ;) I consider it practice to get a good understanding of what goes on *after* an I2C/SPI request is made
[shmem]: ah ok. Gonna read that. but now....
shmem compiles himself into his template
[stevieb]: this is my RPi:: distribution overall automation build system physical layout. It doesn't encompass all of my RPi dists yet, ...
[stevieb]: ...but I'm getting close. I've been soldering my own PCBs to gain that experience as well, before I have my own manufactured.
[stevieb]: heh, nice *template* ;) 'night shmem!

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