If we use the test condition below it will panic. It panics because in this case <

Should it has float64 or just <code class="notranslat

Like this: <div class="snippet-clipboard-content notranslate position-relative ove

Function substring returns boolean about xpath HOT 7 CLOSED

antchfx commented on June 12, 2024

Function substring returns boolean

from xpath.

Comments (7)

lazize commented on June 12, 2024 1

Maybe it worth to put the return value of each function in README.md, like:

* starts-with( string, string ) string
* ends-with( string, string ) string
* normalize-space( string ) string
* substring( string , start : int [, length : int] ) string
* string-length( [string] ) string
* contains( string, string ) boolean
* sum( node-set ) int64

from xpath.

zhengchun commented on June 12, 2024

its a bug,substring should return an empty string, not a false.

from xpath.

zhengchun commented on June 12, 2024

Very good.

the sum() return value type is float64.

from xpath.

lazize commented on June 12, 2024

Should it has float64 or just int or number?
Because the precision here doe not matter so much as we use it inside xpath string.

What do you think?

from xpath.

lazize commented on June 12, 2024

Like this:

    * position() number
    * last() number
    * count( node-set ) number
    * name() string
    * starts-with( string, string ) boolean
    * ends-with( string, string ) boolean
    * normalize-space( string ) string
    * substring( string , start : number [, length : number] ) string
    * not( expression ) boolean
    * string-length( [string] ) number
    * contains( string, string ) boolean
    * sum( node-set ) number
    * concat( string1 , string2 [, stringn]* ) string

from xpath.

zhengchun commented on June 12, 2024

consider a sum(1+1.2), it return a float number, or sum(count(//a)+2.0) etc.

Another reason is Golang no number type and can not perform an expression like this : int + float, float64 can compatibility int, So for simplify, float64 as default type, even position() or count() function.

from xpath.

lazize commented on June 12, 2024

Goo, so lets use the go types.

from xpath.

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