Concatenating Large Number Of String the Right Way #DartTip

Concatenation of Strings can be done in a variety of ways in Dart. But to glue large number of strings together needs more extra care when you’re looking at performance pertaining saving memory and less execution time.

string1 + string2. This is the most straightforward. This the easiest when it comes to smaller and readability apart from String interpolation.

However, each time you call “+” there is a performance hit and when you concatenate two strings you create a new object which needs to be garbage collected. This create lot of temporary objects, which is inefficient. (Also note, calling the + on null value throws an exception).

Here is an example:

Using the StringBuffer class in the other hand can gather the components quite efficiently and convert them to a string only when needed.

Here is an example:

Happy Coding New Year!!!




Loves clean codes. I build stuff using flutter/dart⚡️

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Paul Edeme’kong

Paul Edeme’kong

Loves clean codes. I build stuff using flutter/dart⚡️

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