A false positive error, or in short a false positive, commonly called a "false alarm", is a result that indicates a given condition exists, when it does not. For example, in the case of "The Boy Who Cried Wolf", the condition tested for was "is there a wolf near the herd?"; the shepherd at first wrongly indicated there was one, by calling "Wolf, wolf!" A false positive error is a type I error where the test is checking a single condition, and wrongly gives an affirmative (positive) decision.
A false negative error, or in short a false negative, is a test result that indicates that a condition does not hold, while in fact it does. I.e., erroneously no effect has been inferred. An example is a truly guilty prisoner who is acquitted of a crime. The condition "the prisoner is guilty" holds (the prisoner is guilty). But the test (a trial in a court of law) failed to realize this, and wrongly decided the prisoner was not guilty, falsely concluding a negative about the condition. A false negative error is a type II error occurring in a test where a single condition is checked for and the result of the test is erroneously that the condition is absent.
In programming, canonical means "according to the rules." And non-canonical means "not according to the rules." In the early Christian church, the "canon" was the officially chosen text. In The New Hacker's Dictionary , Eric Raymond tells us that the word meant "reed" in its Greek and Latin origin, and a certain length of reed came to be used as a standard measure. In some knowledge areas, such as music and literature, the "canon" is the body of work that everyone studies. The terms are sometimes used to distinguish whether a programming interface follows a particular standard or precedent or whether it departs from it.
Binary Large Object
Without Loss Of Generality(일반성을 잃지 않고)
In computability theory, the halting problem is the problem of determining, from a description of an arbitrary computer program and an input, whether the program will finish running or continue to run forever.
꼭 필요하지만 간단한 기능을 위해서 작성해야 하는 코드, ex) func getCurrentTime()