grepper add on code example

Example 1: add grepper

Ng If and Ng For use together for Ion Select
    <ion-item>
      <ion-label>Member Name 会员名字</ion-label>
      <ion-select [(ngModel)]="invoice.membername"  placeholder="Select One">
        <ng-container *ngFor="let c of members">
        <ion-select-option  *ngIf="c.by == userid" [value]="c.name">
          {{ c.name }}
        </ion-select-option>
      </ng-container>
      </ion-select>
    </ion-item>

Example 2: contribute grepper extension

# Python Program to find the area of triangle

a = 5
b = 6
c = 7

# Uncomment below to take inputs from the user
# a = float(input('Enter first side: '))
# b = float(input('Enter second side: '))
# c = float(input('Enter third side: '))

# calculate the semi-perimeter
s = (a + b + c) /2

# calculate the area
area = (s*(s-a)*(s-b)*(s-c)) ** 0.5
print('The area of the triangle is %0.2f %area')