what is the difference between unapply and apply when would you use them?
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Whereas the apply method is like a constructor which takes arguments and creates an object, the unapply takes an object and tries to give back the arguments. This is most often used in pattern matching and partial functions. The apply method creates a CustomerID string from a name .
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As you probably already know, “if” is conditional. It is used to describe a possible situation, and what would happen under the conditions of that situation. “Unless” is also conditional, but it is effectively “if” with an extra exclusion or negative qualifier added. Unless basically means “except if” or “if… not”.
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A conditional offer means you still need to meet the requirements – usually exam results. An unconditional offer means you've got a place, although there might still be a few things to arrange. An unsuccessful or withdrawn choice removes that option, but you could add more.
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The main difference between the two types of costs is that implicit costs are opportunity costs, while explicit costs are expenses paid with a company's own tangible assets. This makes implicit costs synonymous with imputed costs, while explicit costs are considered out-of-pocket expenses.
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Answer: Manifest functions are meant to occur and meant to be recognized, while latent functions are unrecognized and unintended. ... By contrast, latent functions are the unintended, unpredicted or unseen consequences that might arise as a result of certain manifest functions that have taken place.
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2 Answers. The most common phrasing is simply using "possible". It isn't a prefix but it is rather clear: This is a possible solution to our bug problem.
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You use but to introduce something which contrasts with what you have just said. You use yet to introduce a fact which is rather surprising after the previous fact you have just mentioned. It is also to be noted that though both these words carry almost the same meaning, yet is a little more formal than but.
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An expression is "undefined" if it's gibberish, i.e., it can't be parsed in the rules of the system we're working in. Something "does not exist" if the expression potentially referring to that something can be parsed but nothing fulfills the criteria that expression establishes.
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Rule. Little refers to non-countable nouns, and is used with the singular form to indicate that something exists only in a small amount or to a slight degree. Few refers to countable nouns, and is used with the plural form to indicate not many persons or things.
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No solution means that there isn't a number which will solve the equation. For example, x=x+1 has no solution. Undefined means there isn't a single solution, so the equation doesn't define a single answer. For example, 0x=0 is undefined because there are an infinite number of possible solutions.
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What is the difference between using forgot and using left? "I forgot" where my keys are is not the same as I left my keys at home. "I forgot" means that I could not remember. "I left" means that I neglected to bring something.
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For uncountable nouns, use “any” after the negative “isn't”, and for plural countable nouns use “any” after “aren't”. Remember: Do not use “any” with singular countable nouns.
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Depends on the context. Generally these are the same concept, but 'provided that' is a bit more formal or business-like than just 'if'. Also, 'provided' does not always need or want to be followed by 'that'.
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what are the differences between unshift() and push() methods in javascript? Both the methods are used to add elements to the array. But the only difference is unshift() method adds the element at the start of the array whereas push() adds the element at the end of the array.
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Unavailable is something never will be available. And not available is something is not available right now, but next with some health will be available.
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As verbs the difference between activate and reactivate is that activate is to put into action, to put to work while reactivate is to activate again.
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Thus, in conditional Statements , a condition is present and based on it's truth value the task is performed or rejected. Whereas in Unconditional statement there is no condition associated, thus the task may get rejected but you won't know the reason because you didn't care at all!