How to resolve the algorithm Table creation/Postal addresses step by step in the zkl programming language

Published on 12 May 2024 09:40 PM
#Zkl

How to resolve the algorithm Table creation/Postal addresses step by step in the zkl programming language

Table of Contents

Problem Statement

Create a table to store addresses. You may assume that all the addresses to be stored will be located in the USA.   As such, you will need (in addition to a field holding a unique identifier) a field holding the street address, a field holding the city, a field holding the state code, and a field holding the zipcode.   Choose appropriate types for each field. For non-database languages, show how you would open a connection to a database (your choice of which) and create an address table in it. You should follow the existing models here for how you would structure the table.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Table creation/Postal addresses step by step in the zkl programming language

Source code in the zkl programming language

const NM="address.db";
dbExec(NM,"create table address (street, city, state, zip);");

fcn dbExec(db,qry){ dbErrorCheck(dbMakeQuery(db,qry),String(db," : ",qry)) }
fcn dbMakeQuery(db,qry){
   qry=dbEscapeQuery(qry) + ";";
   cmd:=String("echo \"", qry, "\" | sqlite ", db);
   reg r;
   p:=System.popen(cmd,"r");
      try{ r=p.readln(*) }catch(TheEnd){}  // r==Void if sqlite doesn't print
   p.close();
   r
}
fcn dbEscapeQuery(qry){ qry.replace(0'|"|, 0'|\"|) }
fcn dbErrorCheck(listOfStrings){
   if(listOfStrings and listOfStrings[-1].holds("SQL error")) 
      throw(Exception.IOError(listOfStrings.concat().strip()));
   True
}

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