When you update "x" with x = 2000, a brand new integer object is produced along with the dictionary is current to stage at the new object. The old a single thousand item is unchanged (and might or might not be alive dependant upon whether or not anything else refers to the object).
In this instance the variable titled var in the method Transform is assigned a reference to self.variable, and you simply instantly assign a string to var.
On the call to strToLower, There's also no need for assignment, you're primarily just passing the memory deal with for cString1. In my expertise, Strings in C are the hardest portion to know for any person coming from Java/C# background again to C.
the input strings) may not be the ideal plan. A non-harmful function could well be of the Significantly higher value in my opinion. Rather than accomplishing as specific conversion from the enter strings to some lower scenario, it is generally a better plan to put into action a custom char-by-char scenario-insensitive string comparison perform and utilize it rather than contacting the regular strcmp.
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Position becoming, I don't concur that it's a hack (which I just take to mean to check with something that will work but for good reasons unknown, untested, or unintended through the implementer).
However, const or not, the parameter maintains the reference to the object and reference can not be assigned to stage to a special item inside the known as functionality.
Think about things becoming handed by assignment rather than by reference/by price. This way, it is always obvious, what is occurring so long as you fully grasp what happens for the duration of the traditional assignment.
three But How will you reassign the reference? I thought you can't alter the tackle of 'var' but that your string "Transformed" was informative post now going to be saved inside the 'var' memory deal with.
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eg; An immutable object form can not be modified inside the identified as function whereas a mutable object could be both up-to-date or re-initialized. An important distinction between updating or re-assigning/re-initializing the mutable variable is the fact that up to date worth will get mirrored back again from the termed function whereas the reinitialized value will not. Scope of any assignment of latest object to some mutable variable is regional to your functionality during the python. Illustrations furnished by @blair-conrad are wonderful to understand this.
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