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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html
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@ -419,6 +419,13 @@ of C++ compilers:
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| | 6. 'abc' + '1234567' |
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| | 7. (x + 'a1B2c3D4' + y)[i:2j] |
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+----------+---------------------------------------------------------+
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| += | Append to x the value of y. Where x is a mutable string |
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| | and y is either a string or a string range. eg: |
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| | 1. x += y |
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| | 2. x += 'abc' |
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| | 3. x += y[:i + j] + 'abc' |
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| | 4. x += '0123456789'[2:7] |
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+----------+---------------------------------------------------------+
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| [] | The string size operator returns the size of the string |
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| | being actioned. |
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| | eg: |
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