rtti

问题 Playing with new RTTI module, I couldn't find a way to set an event handler with the new utilities. Trying something like this: LProp := TRttiContext.Create.GetType(Form1.ClassInfo).AsInstance.GetProperty('OnClick'); LProp.SetValue(Form1, {a TValue!}); SetValue needs a TValue passed but I've yet to find a way to represent a TMethod via a TValue. Any comments? ps. And a side question.. It seems prefixing RTTI variables with "L" is a convention (and a good one IMO, meta code turns into a puzzle

问题 Playing with new RTTI module, I couldn't find a way to set an event handler with the new utilities. Trying something like this: LProp := TRttiContext.Create.GetType(Form1.ClassInfo).AsInstance.GetProperty('OnClick'); LProp.SetValue(Form1, {a TValue!}); SetValue needs a TValue passed but I've yet to find a way to represent a TMethod via a TValue. Any comments? ps. And a side question.. It seems prefixing RTTI variables with "L" is a convention (and a good one IMO, meta code turns into a puzzle

问题 Playing with new RTTI module, I couldn't find a way to set an event handler with the new utilities. Trying something like this: LProp := TRttiContext.Create.GetType(Form1.ClassInfo).AsInstance.GetProperty('OnClick'); LProp.SetValue(Form1, {a TValue!}); SetValue needs a TValue passed but I've yet to find a way to represent a TMethod via a TValue. Any comments? ps. And a side question.. It seems prefixing RTTI variables with "L" is a convention (and a good one IMO, meta code turns into a puzzle

问题 I'm working on an iPhone app that uses C++ and is almost at the 100 MB mark (the point at which Apple won't let people download it via WWAN). I've taken many steps to reduce the binary size, such as removing unneeded third-party dependencies. However, the app, and in particular the binary, is still large because it has a lot of features. I've heard that disabling RTTI can reduce the binary size. Would it be possible to turn off RTTI for some files, e.g. all files without the strings "typeid"

问题 I'm working on an iPhone app that uses C++ and is almost at the 100 MB mark (the point at which Apple won't let people download it via WWAN). I've taken many steps to reduce the binary size, such as removing unneeded third-party dependencies. However, the app, and in particular the binary, is still large because it has a lot of features. I've heard that disabling RTTI can reduce the binary size. Would it be possible to turn off RTTI for some files, e.g. all files without the strings "typeid"

问题 I'm working on an iPhone app that uses C++ and is almost at the 100 MB mark (the point at which Apple won't let people download it via WWAN). I've taken many steps to reduce the binary size, such as removing unneeded third-party dependencies. However, the app, and in particular the binary, is still large because it has a lot of features. I've heard that disabling RTTI can reduce the binary size. Would it be possible to turn off RTTI for some files, e.g. all files without the strings "typeid"

问题 Why are some properties repeated (such as Action and Align ) where others are not ( AlignWithMargins ) when TRttiContext.GetType is called on a VCL Control? uses System.RTTI, System.Generics.Collections, System.Generics.Defaults; //.... procedure TForm11.btnShowPropertiesClick(Sender: TObject); var R: TRttiContext; Props: TArray<TRttiProperty>; Prop : TRttiProperty; begin memo1.Clear; R := TRttiContext.Create; Props := R.GetType(Sender.ClassType).GetProperties; //Sort properties by name

问题 Why are some properties repeated (such as Action and Align ) where others are not ( AlignWithMargins ) when TRttiContext.GetType is called on a VCL Control? uses System.RTTI, System.Generics.Collections, System.Generics.Defaults; //.... procedure TForm11.btnShowPropertiesClick(Sender: TObject); var R: TRttiContext; Props: TArray<TRttiProperty>; Prop : TRttiProperty; begin memo1.Clear; R := TRttiContext.Create; Props := R.GetType(Sender.ClassType).GetProperties; //Sort properties by name

问题 Why are some properties repeated (such as Action and Align ) where others are not ( AlignWithMargins ) when TRttiContext.GetType is called on a VCL Control? uses System.RTTI, System.Generics.Collections, System.Generics.Defaults; //.... procedure TForm11.btnShowPropertiesClick(Sender: TObject); var R: TRttiContext; Props: TArray<TRttiProperty>; Prop : TRttiProperty; begin memo1.Clear; R := TRttiContext.Create; Props := R.GetType(Sender.ClassType).GetProperties; //Sort properties by name

问题 Is it possible to create a key->type map at compile time, with each key-value being added when an instance of a variadic function is called? template <typename T, typename ... Args> void writeToQueue(Args... args) { //Do something with args. // Insert to map. something akin to: // CODEMAP[T] = Args... // T -> Args... mapped when foo<T,Args...> is called. } Or template <int code, typename ... Args> void writeToQueue(Args... args) { //Do something with args. // Insert to map. something akin to: