F452 - String manipulation (c#)

MODULUS:

MOD or % 

the remainder when dividing one number by another

e.g 7 MOD 3 = 1

DIV 

the whole number result

e.g 47 DIV 10 = 4

\r end of line.

\n new line.

Concatenation:

string.Concat(string, "part being added");

Replace:
string.Replace(string, "New string.\n");

Format:

string,Format("{0}: {1:0,0} - {2:yyyy}");

Turning stuff into strings:

datatype.ToString();

Turning strings into integers:

//CAUTION; HANDLE WITH CARE 

(characters cannot be converted)//

int.Parse(text);

{ A = 1, B = 1 }

AND

&&

e.g IF ((A==2)&&(B==3))

Returns FALSE or 0

OR

||

e.g IF ((A==2)||(B==3))

Returns False or 0

NOT

!

e.g IF (!(A==2))

Returns True or 1

Concatenation

Means joining one or more strings together.

Replace

Lets you replace a given char in a string with another character.

Extract

Returns part of the strings from between two specified elements.

Length

Returns the number of characters in a string.

charCodeAt

Returns the ASCII value of a given element.

SWAP

Swaps two given chars.

HANDY FACTOID:

In ASCII the char A is given the code 65.

Validation:

Presence check:

Is the data present, has the required field been completed?

Length check:

Is the data a suitable length?

Format check:

Correct format? e.g dd/mm/yyyy

Range check:

Is the data in the correct range.

Existence check:

Does the data match something that already exists in the system?