• Jonathan Marler (6/6) Jul 01 2016 How do casts work under the hood? I'm mostly interested in what
• Basile B. (6/12) Jul 01 2016 https://github.com/dlang/druntime/blob/master/src/rt/cast_.d#L62
• Basile B. (2/11) Jul 01 2016 damn, where is the "edit" button ^^
• Jonathan Marler (4/17) Jul 01 2016 You pointed me right to it! Thanks this is exactly what I was

Jonathan Marler <johnnymarler gmail.com> writes:

How do casts work under the hood?  I'm mostly interested in what 
needs to be done in order to cast a class to a subclass.  I'd 
like to know what is being done to determine whether the object 
is a valid instance of the cast type.  If the code is implemented 
in the druntime, a pointer to where it lives would suffice.  
Thanks in advance for any help.

Basile B. <b2.temp gmx.com> writes:

On Friday, 1 July 2016 at 15:45:35 UTC, Jonathan Marler wrote:
 How do casts work under the hood?  I'm mostly interested in 
 what needs to be done in order to cast a class to a subclass.  
 I'd like to know what is being done to determine whether the 
 object is a valid instance of the cast type.  If the code is 
 implemented in the druntime, a pointer to where it lives would 
 suffice.  Thanks in advance for any help.

https://github.com/dlang/druntime/blob/master/src/rt/cast_.d#L62

niptick: on github search then rather look at the results in the 
issues because in the code you'll get a lot of noise due to the 
unittests or like in this case because if the keywords.

https://github.com/dlang/druntime/search?q=cast&type=Issues&utf8=%E2%9C%93

Basile B. <b2.temp gmx.com> writes:

On Friday, 1 July 2016 at 17:32:26 UTC, Basile B. wrote:
 On Friday, 1 July 2016 at 15:45:35 UTC, Jonathan Marler wrote:
 How do casts work under the hood?  I'm mostly interested in 
 what needs to be done in order to cast a class to a subclass.  
 I'd like to know what is being done to determine whether the 
 object is a valid instance of the cast type.  If the code is 
 implemented in the druntime, a pointer to where it lives would 
 suffice.  Thanks in advance for any help.

 https://github.com/dlang/druntime/blob/master/src/rt/cast_.d#L62

 niptick

damn, where is the "edit" button ^^

Jonathan Marler <johnnymarler gmail.com> writes:

On Friday, 1 July 2016 at 17:34:25 UTC, Basile B. wrote:
 On Friday, 1 July 2016 at 17:32:26 UTC, Basile B. wrote:
 On Friday, 1 July 2016 at 15:45:35 UTC, Jonathan Marler wrote:
 How do casts work under the hood?  I'm mostly interested in 
 what needs to be done in order to cast a class to a subclass.
  I'd like to know what is being done to determine whether the 
 object is a valid instance of the cast type.  If the code is 
 implemented in the druntime, a pointer to where it lives 
 would suffice.  Thanks in advance for any help.

 https://github.com/dlang/druntime/blob/master/src/rt/cast_.d#L62

 niptick

 damn, where is the "edit" button ^^

You pointed me right to it! Thanks this is exactly what I was 
looking for.  I figured it was doing something like this but now 
I have confirmation.