typescript for duplicate validation

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Why have to add string before boolean and why they are link together for check duplicate validation

Checkduplicate($name: string) : boolean {

  for (let a of this.dataarray) {

    if (a['haha'].Name === $name) {return true;}

  } 

  return false;

}

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

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up vote
-1
down vote

favorite

Why have to add string before boolean and why they are link together for check duplicate validation

Checkduplicate($name: string) : boolean {

  for (let a of this.dataarray) {

    if (a['haha'].Name === $name) {return true;}

  } 

  return false;

}

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

add a comment |

up vote
-1
down vote

favorite

Why have to add string before boolean and why they are link together for check duplicate validation

Checkduplicate($name: string) : boolean {

  for (let a of this.dataarray) {

    if (a['haha'].Name === $name) {return true;}

  } 

  return false;

}

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

Why have to add string before boolean and why they are link together for check duplicate validation

Checkduplicate($name: string) : boolean {

  for (let a of this.dataarray) {

    if (a['haha'].Name === $name) {return true;}

  } 

  return false;

}

string typescript class boolean

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

edited Nov 17 at 8:59

Nurbol Alpysbayev

2,1751220

asked Nov 17 at 8:48

S. Jenn

asked Nov 17 at 8:48

S. Jenn

asked Nov 17 at 8:48

S. Jenn

add a comment |

1 Answer
1

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up vote
0
down vote

Why have to add string before boolean

string tells us that parameter $name must be of type string

why they are link together for check duplicate validation

Not sure what you mean, but this function checks if the string $name has duplicates in this.dataarray

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

add a comment |

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1 Answer
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1 Answer
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active

oldest

votes

up vote
0
down vote

Why have to add string before boolean

string tells us that parameter $name must be of type string

why they are link together for check duplicate validation

Not sure what you mean, but this function checks if the string $name has duplicates in this.dataarray

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

add a comment |

up vote
0
down vote

Why have to add string before boolean

string tells us that parameter $name must be of type string

why they are link together for check duplicate validation

Not sure what you mean, but this function checks if the string $name has duplicates in this.dataarray

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

add a comment |

up vote
0
down vote

Why have to add string before boolean

string tells us that parameter $name must be of type string

why they are link together for check duplicate validation

Not sure what you mean, but this function checks if the string $name has duplicates in this.dataarray

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

Why have to add string before boolean

string tells us that parameter $name must be of type string

why they are link together for check duplicate validation

Not sure what you mean, but this function checks if the string $name has duplicates in this.dataarray

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

answered Nov 17 at 9:04

Nurbol Alpysbayev

2,1751220

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

add a comment |

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

thanks for your explanation
– S. Jenn
13 hours ago

You are welcome! Consider also upvoting and selecting my answer as best, because this is how you thank people on SO.
– Nurbol Alpysbayev
1 hour ago

add a comment |

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