gaz Heyes :
> Well you better stop doing that since it's a syntax error
The other members pointed out what I meant. Yes, the first RegExp
include "I" as a modifier. I posted first message trough my phone.
Obviously I've leaved "Caps Lock" :( Sorry for the confusion:
/^[A-Z_$][A-Z0-9_$]*$/I
Shou
On 6 September 2011 17:14, gaz Heyes wrote:
> On 6 September 2011 16:55, Nick Morgan wrote:
>>
>> He said "Also when I use `i` modifier I always use upper case letters
>> in RegExp literal because they are easier for reading", i.e. when he
>> uses the `i` modifier he uses uppercase letters in the
On 6 September 2011 16:49, gaz Heyes wrote:
>
> On 6 September 2011 16:32, Poetro wrote
>>
>> Asen means:
>>
>> /^[A-Z_$][\w$]*$/i
>
> Asen shouldn't have said "i" modifier then
>
He said "Also when I use `i` modifier I always use upper case letters
in RegExp literal because they are easier for
2011/9/6 gaz Heyes :
> On 6 September 2011 14:46, Asen Bozhilov wrote:
>>
>> Also when I use
>> `i` modifier I always use upper case letters in RegExp literal because
>> they are easier for reading.
>
> Well you better stop doing that since it's a syntax error
Asen means:
/^[A-Z_$][\w$]*$/i
--
gaz Heyes :
> You could shorten that to:
> /^[a-z_$][\w$]*$/i
>
> Much cleaner :P
You are correct it's shorter, but personally I prefer previous variant
of that RegExp. I think it's more verbose than `\w`. Also when I use
`i` modifier I always use upper case letters in RegExp literal because
they
Yes, thanks everyone for takes on identifier regexps, maybe I replace it
with some even more simpler (seems \w is better).
In general, our identifiers include more complete subset of characters
than identifiers in JS. For example:
+ (addition function name)
- (subtraction function name)
* (mu
Instead of Unicode support, ASCII letters in educational article are
completely enough. You can split identifiers in two parts. First letter and
everything else. So the RegExp would be:
/^[A-Z_$][A-Z0-9_$]*$/I
While this is for checking purposes you don't have to care abou the case of
letters. Al
On Tue, Sep 6, 2011 at 12:46 PM, Pete Otaqui wrote:
> Don't forget "nothing" (or "an empty string"):
>
> https://github.com/micmath/eMptyStringJS/blob/master/src/emptystring.js
Although funny (and I actually did not know about it myself), it's not
a valid identifier :) Just a valid property to us
Don't forget "nothing" (or "an empty string"):
https://github.com/micmath/eMptyStringJS/blob/master/src/emptystring.js
On 5 September 2011 19:43, Peter van der Zee wrote:
> On Thu, Sep 1, 2011 at 6:49 PM, Dmitry A. Soshnikov
> wrote:
> > That's it -- while it perhaps perfectly correct, unf
On Thu, Sep 1, 2011 at 6:49 PM, Dmitry A. Soshnikov
wrote:
> That's it -- while it perhaps perfectly correct, unfortunately it will
> complicate the article which is without it too big :(
If you want to be picky about it (and I know you do ;), any "unicode
letter" is valid as part of an identifie
On 01.09.2011 20:49, Dmitry A. Soshnikov wrote:
On 01.09.2011 20:44, gaz Heyes wrote:
On 1 September 2011 17:25, Dmitry A. Soshnikov
mailto:dmitry.soshni...@gmail.com>> wrote:
Though, you can give me your regexp you think fits better for
education article ;) Only of course it won't com
On 01.09.2011 20:44, gaz Heyes wrote:
On 1 September 2011 17:25, Dmitry A. Soshnikov
mailto:dmitry.soshni...@gmail.com>> wrote:
Though, you can give me your regexp you think fits better for
education article ;) Only of course it won't complicate the things
too much.
Slightly compl
Yep. It's a simplified regexp (as much as possible). The main thing is
not to complicate the explanation with complicated regexps, etc (since
the source of an article is big by itself) -- this is an education
language, not a production.
Though, you can give me your regexp you think fits better
The next part of implementing an interpreter is out.
"Essentials of interpretation" Lesson 5. Simple user-defined functions.
https://github.com/DmitrySoshnikov/Essentials-of-interpretation/blob/master/src/lesson-5.js
Dmitry.
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