Go Functions: Difference between revisions
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Built-in functions are available by default, without importing any package. Their names are [[Go_Language#Pre-Declared_Functions|predeclared function identifiers]]. They give access to Go's internal data structures. Their semantics depends on the arguments. | Built-in functions are available by default, without importing any package. Their names are [[Go_Language#Pre-Declared_Functions|predeclared function identifiers]]. They give access to Go's internal data structures. Their semantics depends on the arguments. | ||
:::{|class="wikitable" style="text-align: left;" | |||
| <font face='menlo' size='-2'>[[Go Slices#append.28.29|append]]</font> || <font face='menlo' size='-2'>[[#cap.28.29|cap()]]</font> || <font face='menlo' size='-2'>[[Go Built-In Function close|close]]</font> || <font face='menlo' size='-2'>[[Go Built-In Functions for Manipulating Complex Numbers#complex.28.29|complex]]</font> || <font face='menlo' size='-2'>[[Go Slices#copy.28.29|copy]]</font> | |||
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| <font face='menlo' size='-2'> [[Go Maps#delete.28.29|delete]]</font> || <font face='menlo' size='-2'> [[Go Built-In Functions for Manipulating Complex Numbers#imag.28.29|imag]]</font> || <font face='menlo' size='-2'> [[#len.28.29|len()]]</font> || <font face='menlo' size='-2'> [[Go Built-In Function make|make()]]</font> || <font face='menlo' size='-2'> [[Go Built-In Function new|new]]</font> | |||
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| <font face='menlo' size='-2'> [[Go Concepts - Error Handling#Panics|panic]]</font> || <font face='menlo' size='-2'> [[Go_Printing_to_Stdout_and_Stderr#print.28.29|print]]</font> || <font face='menlo' size='-2'>[[Go_Printing_to_Stdout_and_Stderr#println.28.29|println]]</font> || <font face='menlo' size='-2'> [[Go Built-In Functions for Manipulating Complex Numbers#real.28.29|real]]</font> || <font face='menlo' size='-2'> [[Go Concepts - Error Handling#Panics|recover]]</font> | |||
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==Length and Capacity== | ==Length and Capacity== | ||
Revision as of 20:39, 24 August 2023
External
Internal
Overview
Go functions allow variables to be declared, inside the function, with the short variable declaration.
Pass by Value vs. Pass by Reference
Arrays are passed by value.
Built-in Functions
Built-in functions are available by default, without importing any package. Their names are predeclared function identifiers. They give access to Go's internal data structures. Their semantics depends on the arguments.
Length and Capacity
len()
len() returns string length, array length, slice length and map size.
cap()
cap() returns slice capacity.
Complex Number Manipulation
TO DO: Continue to Distribute These Built-in Functions
Allocation: new()
Making slices, maps and channels: make()
Appending to and copying slices: append(), copy()
Deletion of map elements delete()
Handling panics panic(), recover()
DEPLETE THIS
Built-in functions for type conversions.
deplete this Go Concepts - Functions