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String To Number

by Tom Huggens, 3500 days ago
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This function converts a string to a number. It generates a number from a string or combinations of letters and numbers.
The function is called "Num" and it uses the "GetHashCode" method of an object to generate a number.

The "Num" function can be helpful in many situations.

Here is an example using the composite function:
comp(rsi(14) > 60, "count")
The above function calculates the number of stocks whose 14-bar relative strength index (RSI) is higher than 60.
Let us say we want to calculate the same composite but we want to group the results by industry. This means that we want the number of stocks, within the same industry than the current stock, whose 14-bar relative strength index is higher than 60.
We would use the "industry()" function to get the stock's industry. The problem is that the third parameter of the composite (comp) function, which is used to group data, accepts no texts; it only accepts numeric values.
To solve this issue, we must convert the text value, which is the stock's industry, to a numeric value.
comp(rsi(14) > 60, "count", num(industry()))


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