Fix outdated float64 doc comments in helper package (#353)

# Describe Request

Doc comments in the helper package still referenced float64 despite the
functions having been migrated to generics. This PR updates the comments
in all 20 affected files to accurately reflect the generic type
parameters (T, F) used in their signatures.

# Change Type

Documentation fix (no functional changes)

Co-authored-by: Onur Cinar <onur.cinar@gmail.com>

Author: whencanibe

helper/abs.go

@@ -6,7 +6,7 @@ package helper
 
 import "math"
 
-// Abs calculates the absolute value of each value in a channel of float64.
+// Abs calculates the absolute value of each value in a channel of type T.
 //
 // Example:
 //

helper/add.go

@@ -4,7 +4,7 @@
 
 package helper
 
-// Add adds each pair of values from the two input channels of float64
+// Add adds each pair of values from the two input channels of type T
 // and returns a new channel containing the sums.
 //
 // Example:

helper/apply.go

@@ -6,8 +6,8 @@ package helper
 
 // Apply applies the given transformation function to each element in the
 // input channel and returns a new channel containing the transformed
-// values. The transformation function takes a float64 value as input
-// and returns a float64 value as output.
+// values. The transformation function takes a value of type T as input
+// and returns a value of type T as output.
 //
 // Example:
 //

helper/chan_to_slice.go

@@ -4,7 +4,7 @@
 
 package helper
 
-// ChanToSlice converts a channel of float64 to a slice of float64.
+// ChanToSlice converts a channel of type T to a slice of type T.
 //
 // Example:
 //

helper/divide.go

@@ -4,7 +4,7 @@
 
 package helper
 
-// Divide takes two channels of float64 and divides the values
+// Divide takes two channels of type T and divides the values
 // from the first channel with the values from the second one.
 // It returns a new channel containing the results of
 // the division.

helper/divide_by.go

@@ -5,7 +5,7 @@
 package helper
 
 // DivideBy divides each element in the input channel
-// of float64 values by the given divider and returns a
+// of type T values by the given divider and returns a
 // new channel containing the divided values.
 //
 // Example:

helper/filter.go

@@ -6,7 +6,7 @@ package helper
 
 // Filter filters the items from the input channel based on the
 // provided predicate function. The predicate function takes a
-// float64 value as input and returns a boolean value indicating
+// value of type T as input and returns a boolean value indicating
 // whether the value should be included in the output channel.
 //
 // Example:

helper/head.go

@@ -5,7 +5,7 @@
 package helper
 
 // Head retrieves the specified number of elements
-// from the given channel of float64 values and
+// from the given channel of type T values and
 // delivers them through a new channel.
 //
 // Example:

helper/keep_negatives.go

@@ -4,7 +4,7 @@
 
 package helper
 
-// KeepNegatives processes a stream of float64 values, retaining negative
+// KeepNegatives processes a stream of type T values, retaining negative
 // values unchanged and replacing positive values with zero.
 //
 // Example:

helper/keep_positives.go

@@ -4,7 +4,7 @@
 
 package helper
 
-// KeepPositives processes a stream of float64 values, retaining positive
+// KeepPositives processes a stream of type T values, retaining positive
 // values unchanged and replacing negative values with zero.
 //
 // Example: