Re: What is Base64 part in Base64.encode
On Sunday, 14 May 2017 at 21:34:35 UTC, zabruk70 wrote:
On Sunday, 14 May 2017 at 21:22:20 UTC, Moritz Maxeiner wrote:
The full line is `alias Base64 = Base64Impl!('+', '/');`
Yes. When we use it like this:
const(char)[] encoded = Base64.encode(data);
then template instantiated and produce ... what?
Have you read the language specification I linked to?
Base64 refers to a (fully) parametrized template. If you use the
symbol Base64, you will access its instantiation; '.encode' then
accesses the member "encode" in the scope of that template
instance, which happens to be a function. That function then gets
called with "data" as its argument and returns the encoded data.
I don't understand what you're trying to express here.
What kind of symbols (class name, structure name, type)
can be used with dot in D language?
Pretty much any symbol. Any type (or alias to one) will at least
have properties[1] and any variable will be open to UFCS[2].
What produced by template instantiation `Base64Impl!('+', '/')`
then i use alias `Base64`?
I'm sorry, but I have no idea what you're trying to convey here.
You can create a base32 encoder however you like, D has lots
of different ways you could approach this; you can even do it
in a
But i want mimic std.base64 syntax.
I want to write something like
string encoded = Base32.encode(data);
And i don't want to use template.
Then use a struct with static member functions:
struct Base32
{
static [...] encode([...]) { [...] }
static [...] decode([...]) { [...] }
}
[1] https://dlang.org/spec/property.html
[2]
https://tour.dlang.org/tour/en/gems/uniform-function-call-syntax-ufcs
Re: What is Base64 part in Base64.encode
On Sunday, 14 May 2017 at 21:22:20 UTC, Moritz Maxeiner wrote:
The full line is `alias Base64 = Base64Impl!('+', '/');`
Yes. When we use it like this:
const(char)[] encoded = Base64.encode(data);
then template instantiated and produce ... what?
I don't understand what you're trying to express here.
What kind of symbols (class name, structure name, type)
can be used with dot in D language?
What produced by template instantiation `Base64Impl!('+', '/')`
then i use alias `Base64`?
You can create a base32 encoder however you like, D has lots of
different ways you could approach this; you can even do it in a
But i want mimic std.base64 syntax.
I want to write something like
string encoded = Base32.encode(data);
And i don't want to use template.
Re: What is Base64 part in Base64.encode
On Sunday, 14 May 2017 at 20:04:07 UTC, zabruk70 wrote:
I look to std.base64 module source.
And dont unerstand what is the "Base64" part in
"Base64.encode(data)" example.
I see std.base64 module use template Base64Impl.
I see alias Base64 = Base64Impl!...
But down understand.
Base64 not module, not structure, not class?
The full line is `alias Base64 = Base64Impl!('+', '/');`, which
reads as (refer to [1][2]):
The symbol Base64 refers to the Base64Impl template instantiated
with the template parameters '+' and '/'.
Template Base64Impl shoud produce function?
I don't understand what you're trying to express here.
As Base64Impl's documentation states[3], it contains a generic
Base64 implementation for which you can customize some of the
encoding characters at compile time via template parameters.
I want create base32 encoder/decoder for example.
But i dont need template.
So how i can write Base32.encode()?
By creating class Base32 with encode() member.
By creating structute Base32 with encode() member.
Any other options?
You can create a base32 encoder however you like, D has lots of
different ways you could approach this; you can even do it in a C
way with two functions base32_encode / base32_decode. Just pick
whatever you like.
PS: Please spellcheck.
[1] https://dlang.org/spec/declaration.html#alias
[2] https://dlang.org/spec/template.html
[3] https://github.com/dlang/phobos/blob/master/std/base64.d#L108
What is Base64 part in Base64.encode
I look to std.base64 module source. And dont unerstand what is the "Base64" part in "Base64.encode(data)" example. I see std.base64 module use template Base64Impl. I see alias Base64 = Base64Impl!... But down understand. Base64 not module, not structure, not class? Template Base64Impl shoud produce function? I want create base32 encoder/decoder for example. But i dont need template. So how i can write Base32.encode()? By creating class Base32 with encode() member. By creating structute Base32 with encode() member. Any other options? Thanx.
