[go-nuts] What are the reasonable reasons to use pointers?

What are the reasonable reasons to use pointers? Are pointers neseccary? -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com.

Re: [go-nuts] What are the reasonable reasons to use pointers?

On 1/1/19 12:34 PM, 伊藤和也 wrote: > What are the reasonable reasons to use pointers? Are pointers neseccary? "All problems in computer science can be solved by another level of indirection" -- David Wheeler Happy New Year ;-) -- You received this message because you are subscribed to the G

Re: [go-nuts] What are the reasonable reasons to use pointers?

Pointers are useful to pass around shared state. Values are usually copied so changes on one copy are not visible on the other. Pointers on the other hand are an address to some value (and the address is also copied by passing it around) but the value these addresses point to is exactly one same va

Re: [go-nuts] What are the reasonable reasons to use pointers?

On Tue, Jan 1, 2019 at 12:34 PM 伊藤和也 wrote: > What are the reasonable reasons to use pointers? Are pointers neseccary? Yes, they're necessary in non-trivial programs. Without pointers any program can use only (named) variables declared in the program. Pointers allow creating (anonymous) variable

Re: [go-nuts] What are the reasonable reasons to use pointers?

Some languages, like Java, don’t have explicit pointer types. But they do it by making almost everything an implicit pointer. Andy > On Jan 1, 2019, at 9:13 AM, Jan Mercl <0xj...@gmail.com> wrote: > > > On Tue, Jan 1, 2019 at 12:34 PM 伊藤和也 > wrote: > > > Wha

Re: [go-nuts] What are the reasonable reasons to use pointers?

Most of the answers have been shared already. I'll add only the meaning: Basic variables associate names with the value of data, but pointer variables associate names with the location of data. In an array or slice the name and index serve similar purposes, where the 5 in m[5] is a kind of address

Re: [go-nuts] What are the reasonable reasons to use pointers?

On Tuesday, January 1, 2019 at 9:13:44 AM UTC-8, Jan Mercl wrote: > > > On Tue, Jan 1, 2019 at 12:34 PM 伊藤和也 > > wrote: > > > What are the reasonable reasons to use pointers? Are pointers necessary? > > Yes, they're necessary in non-trivial programs. Without pointers any > program can use only

Re: [go-nuts] What are the reasonable reasons to use pointers?

in fact... array indices and fortran's call by address rules make it a pointer language in the sense you mean. when i was a mere boy i had to decode brian kernighan's magical packing of triangular arrays using such a scheme. ;-) On Tue, Jan 1, 2019 at 5:23 PM Drew Derbyshire wrote: > > > On Tue

Re: [go-nuts] What are the reasonable reasons to use pointers?

On Tue, 01 Jan 2019 03:34:34 -0800 =?UTF-8?B?5LyK6Jek5ZKM5Lmf?= wrote: > > What are the reasonable reasons to use pointers? Are pointers neseccary? Pointers are not necessary as a programming language feature but are necessary in implementing a programming language. As an example, Scheme doesn'

Re: [go-nuts] What are the reasonable reasons to use pointers?

On Tue, Jan 1, 2019 at 6:42 PM Bakul Shah wrote: > > On Tue, 01 Jan 2019 03:34:34 -0800 =?UTF-8?B?5LyK6Jek5ZKM5Lmf?= > wrote: > > > > What are the reasonable reasons to use pointers? Are pointers neseccary? > > Pointers are not necessary as a programming language feature > but are necessary in i

Re: [go-nuts] What are the reasonable reasons to use pointers?

On Tue, 01 Jan 2019 22:56:06 -0800 Ian Lance Taylor wrote: > On Tue, Jan 1, 2019 at 6:42 PM Bakul Shah wrote: > > > > On Tue, 01 Jan 2019 03:34:34 -0800 =?UTF-8?B?5LyK6Jek5ZKM5Lmf?= > > wrote: > > > > > > What are the reasonable reasons to use pointers? Are pointers neseccary? > > > > Pointers

Re: [go-nuts] What are the reasonable reasons to use pointers?

Quoting Bakul Shah (2019-01-02 03:07:14) > On Tue, 01 Jan 2019 22:56:06 -0800 Ian Lance Taylor wrote: > > On Tue, Jan 1, 2019 at 6:42 PM Bakul Shah wrote: > > > > > > On Tue, 01 Jan 2019 03:34:34 -0800 =?UTF-8?B?5LyK6Jek5ZKM5Lmf?= > > > wrote: > > > > > > > > What are the reasonable reasons to

Re: [go-nuts] What are the reasonable reasons to use pointers?

"I do consider assignment statements and pointer variables to be among computer science's "most valuable treasures."" Donald Knuth, Structured Programming with go to Statements -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from

Re: [go-nuts] What are the reasonable reasons to use pointers?

And yet Knuth wrote TeX with virtually no pointers, because he didn’t trust the dynamic memory allocators in many Pascal implementations (probably from bitter experience). So he used array indices as s substitute for pointers. Andy > On Jan 2, 2019, at 3:13 AM, Chris FractalBach wrote: > > "I