Golang Golang Is memory size doubled if passing a slice to a parameter?
Suppose you are one of the people who came from C or similar programming language and started using Golang. In that case...
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Golang Golang Type Switch does not work for a pointer in struct?
I wrote this article because I didn't know the behavior of type switch well especially when the target type is pointer t...
Golang Golang What would be the simplest way to set the default value?
I needed to set the default value if a user did not put the property. There were several ways to set a default value, bu...
Golang Golang Guarantee to process only once by using sync.Once
If a shared resource is needed on multiple goroutines and the initialization must be done only once on one of the gorout...
Golang Golang Use a pointer receiver to define a function for a struct
Do you recognize that there are two ways to define a method for a struct? func (m StructName) FuncName(){ // do somethin...
Golang Golang How/When to use sync.Cond
When should sync.Cond be used instead of channel? Golang provides easy ways for asynchronous processing. As you know, ch...
Golang Golang Set channel direction to prevent usage error
Do you often use a channel? Have you ever considered the channel direction? To use a channel, someone sends data to the ...
Golang Golang Check variable order in Struct if you must reduce memory usage
A recent computer has enough resources and thus we might not have the opportunity to reduce memory usage. However, it's ...
Golang Golang Dynamic access to a property in a struct
I needed dynamic access to all properties in a struct in unit tests. In my case, the struct has only boolean properties....
Golang Golang Is Compiling Regex In Loop Really Expensive?
A regex is a useful feature to check whether a string contains a special format. If we have many formats, we might want ...