DA::DADataObjectSwapUndoCommand类 参考

基于py::object的缓存命令 更多...

#include <DADataUndoCommand.h>

类 DA::DADataObjectSwapUndoCommand 继承关系图:

Public 成员函数
	DADataObjectSwapUndoCommand (QUndoCommand *par=nullptr)
void	setOldData (const DAData &data) override
void	setNewData (const DAData &data) override
void	undo () override
void	redo () override
Public 成员函数 继承自 DA::DADataAbstractUndoCommand
	DADataAbstractUndoCommand (QUndoCommand *par=nullptr)
void	setSkipFirstRedo (bool skip=true)
bool	isSkipFirstRedo () const
void	skipFirstRedo ()
Public 成员函数 继承自 DA::DACallBackInterface
void	setCallBack (CallBack fn)
CallBack	getCallBack () const
void	callback ()
bool	hasCallback () const

Protected 属性
DAData	m_data
pybind11::object	m_oldObject
pybind11::object	m_newObject

额外继承的成员函数
Public 类型 继承自 DA::DACallBackInterface
using	CallBack = std::function< void() >

详细描述

基于py::object的缓存命令

使用这个命令要确保内部的py::obj在前后操作不是一个对象，如果是一个对象则没有效果，因为新旧的obj都一样 下面这种操作场景使用DADataObjectSwapUndoCommand

def dropna(dadata:da_data.DAData, col_selected_index:List[int]):
    df = dadata.toDataFrame()
    df = df.dropna(axis=0, subset=subset, thresh=thresh)
    dadata.setPyObject(df)

上面这段代码DAData前后的对象已经不是一样，可以使用此命令把前后对象存起来

成员函数说明

setNewData()

void DA::DADataObjectSwapUndoCommand::setNewData ( const DAData &  data )

overridevirtual

实现了 DA::DADataAbstractUndoCommand.

setOldData()

void DA::DADataObjectSwapUndoCommand::setOldData ( const DAData &  data )

overridevirtual

实现了 DA::DADataAbstractUndoCommand.

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该类的文档由以下文件生成:

• /home/runner/work/data-workbench/data-workbench/src/DAData/DADataUndoCommand.h
• /home/runner/work/data-workbench/data-workbench/src/DAData/DADataUndoCommand.cpp