Is it wrong to use the word "codes" in programming context?
I shall use these codes.
As a programmer, I cringe when hearing this!
In computer science, "code" is used as a mass noun, specifying the collection of instructions in a specific arrangement as a whole and in no specific quantity. Whether it's one line of code or ten pages, it is still referred to as code, not codes.
When "codes" is used in computer science, it typically refers to values or constants used to specify a trait, access or properties, though in my experience, the actual name of those types of items is used over the word "codes". For example, instead of:
You would write/say:
With regard to the use of "code":
Yes, it is wrong to use the word "codes" in the programming world if source code is implied:
Uncountable noun (my emphasis): "a noun that cannot be used freely with numbers or the indefinite article, and which therefore takes no plural form".
The same if code refers to a computer program:
In some other contexts it is all right, for example, access codes.
"Codes" is actually correct usage and is quite common in academia and in descriptions of commercial products in fields that utilize numerical methods, such as topology optimization or finite element analysis. It is never used to designate a random program that Joe Coder implemented.
What is really meant by this is "well-known and well-tested libraries that do the job as fast as possible". The complexity of the numerical methods is very high, and since performance and accuracy are critical, the demand on the programming skills of their coders is huge. For this reason, the number of numerical method programming libraries is relatively small, and every self-respecting software product in the field uses one or another.
That being said, I would consider any usage outside this very specific context to be incorrect.
Update: By request, some examples below, from different sources:
Hopefully that's convincing enough. More examples to be had if one searches for "optimization codes", "finite element codes" or similar.
Generally "code" is a mass noun. At the other end of the spectrum from the "gimme teh codez" crowd, "code" is used as a count noun in some scientific and numerical circles: "I looked at 5 different codes for FFT [Fast Fourier Transform] and didn't like any of them."
No, this is not correct when you refer to programming code.
There is no plural when you refer to programming code since when you say code you do mean the whole chunk of it. Even if you say for example "different sets of programming code" you notice that no plural is used.
It is always wrong to use "codes" when refering to a quantity of "source code". Source code is a mass noun which should never be pluralised.
There are some however some other cases where it is permissible to use "codes" in a programming context:
Hence "I shall use these codes" may or may not be correct depending on the context.
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