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Python map() and lambda() Use Cases and Examples

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 In Python, map() and lambda functions are often used together for functional programming. Here are some examples to illustrate how they work. Python map and lambda top use cases 1. Using map() with lambda The map() function applies a given function to all items in an iterable (like a list) and returns a map object (which can be converted to a list). Example: Doubling Numbers numbers = [ 1 , 2 , 3 , 4 , 5 ] doubled = list ( map ( lambda x: x * 2 , numbers)) print (doubled) # Output: [2, 4, 6, 8, 10] 2. Using map() to Convert Data Types Example: Converting Strings to Integers string_numbers = [ "1" , "2" , "3" , "4" , "5" ] integers = list ( map ( lambda x: int (x), string_numbers)) print (integers) # Output: [1, 2, 3, 4, 5] 3. Using map() with Multiple Iterables You can also use map() with more than one iterable. The lambda function can take multiple arguments. Example: Adding Two Lists Element-wise list1 = [ 1 , 2 , 3 ]
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The Real Command to Wrap Text in Linux

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Fold command in Linux

Here is a command to wrap text in Linux. The wrapping means it prints it in fixed-width column. More importantly, it will not consider spaces between words. The command you need is FOLD.  

Fold command in Linux

Below, you will find two examples on usage of the FOLD command. These are helpful for your project where you need to write a shell script.

Example-1

The following command displays a set of lines with ten characters in each line:

x="aa bb cc d e f g h i j kk ll mm nn" 
echo $x | fold -10

The output of the preceding code snippet is here:

aa bb cc d e f g h i j kk ll m m nn

Example-2

As another example, consider the following code snippet:


x="The quick brown fox jumps over the fat lazy dog. " 
echo $x | fold -10

The output of the preceding code snippet is here:

The quick brown fox jumps over the fat l azy dog.

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