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寻求多次出现的表达式(Seeking for more than one occurrence of an expression)

 如何在foxpro中搜索多个基于索引键的匹配项？ 我想在ctw和dl表中存在subdir字段匹配的所有行中将表dl的chosen字段更改为T 对于ctw所有行，将重复此匹配搜索。 dl具有相等subdir值的记录不按顺序排序。  
 目前，代码退出第17行的文件结尾遇到消息， do while not eof()嵌套循环，在chosen为T对于仅匹配ctw的第一个subdir值的dl记录。  
select 0
use ctw

select 0
use dl
index on subdir to subdir.idx 

select ctw

do while .not. eof() 

    select dl 
    seek ctw -> subdir

    if found()
        do while not eof() 
            replace chosen with .t. for ctw -> subdir = dl -> subdir
            skip
        enddo
    endif

    select ctw 
    skip 
enddo

How can I search for more than occurrence of index key based matches in foxpro? I want to change the chosen field in table dl to T for all rows where there exists a subdirfield match in ctw and dl tables. This matching search is to be repeated for all rows within ctw. The records in dl with equal subdir values are not ordered sequentially. 
Currently, the code exits with end of file encountered message on line 17 do while not eof() nested loop after changing chosen to T for dl records that match only the first subdir value of ctw. 
select 0
use ctw

select 0
use dl
index on subdir to subdir.idx 

select ctw

do while .not. eof() 

    select dl 
    seek ctw -> subdir

    if found()
        do while not eof() 
            replace chosen with .t. for ctw -> subdir = dl -> subdir
            skip
        enddo
    endif

    select ctw 
    skip 
enddo

原文：https://stackoverflow.com/questions/35093567

更新时间：2024-05-06 12:05

最满意答案

 批次应该是虚拟组件（不应该有任何外部访问）  
export default class Lot extends React.PureComponent {

    render() {
        return (
            <TouchableHighlight
                onPress={this.props.onPress} // <== CHANGED
            >
                <View style={{ flex: 1, height: 150, alignItems: 'center', justifyContent: 'center' }}>
                    <View>
                        {this.props.active && (<Image source={images[this.props.index]} style={[styles.images]} />)}
                    </View>

                 </View>

            </TouchableHighlight>
        );
    }
}
 
 主屏幕  
<FlatList
    data={this.state.lots}
    renderItem={({ item }) => <Lot {...item} onPress={() => this.props.navigate('LotView')} />} //<== CHANGED
/>

Lot should be dummy component (should not have any external access) 
export default class Lot extends React.PureComponent {

    render() {
        return (
            <TouchableHighlight
                onPress={this.props.onPress} // <== CHANGED
            >
                <View style={{ flex: 1, height: 150, alignItems: 'center', justifyContent: 'center' }}>
                    <View>
                        {this.props.active && (<Image source={images[this.props.index]} style={[styles.images]} />)}
                    </View>

                 </View>

            </TouchableHighlight>
        );
    }
}
 
HomeScreen 
<FlatList
    data={this.state.lots}
    renderItem={({ item }) => <Lot {...item} onPress={() => this.props.navigate('LotView')} />} //<== CHANGED
/>

寻求多次出现的表达式(Seeking for more than one occurrence of an expression)

最满意答案

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