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Nov 25, 2023 · Floats and integers are comparable as they are numbers but are usually not equal to each other except when the float is basically the integer but with .0 added to the end. When using ==, if the two items are the same, it will return True. Otherwise, it will return False. You can use = to assign values to variables.
Jul 23, 2014 · An ArrowFunction does not define local bindings for arguments, super, this, or new.target. Any reference to arguments , super , this , or new.target within an ArrowFunction must resolve to a binding in a lexically enclosing environment.
Dec 11, 2008 · Reference: JavaScript Tutorial: Comparison Operators. The == operator will compare for equality after doing any necessary type conversions. The === operator will not do the conversion, so if two values are not the same type === will simply return false. Both are equally quick.
Nov 13, 2018 · The symbol is called "becomes" and was introduced with IAL (later called Algol 58) and Algol 60. It is the symbol for assigning a value to a variable. One reads x := y; as "x becomes y". Using ":=" rather than "=" for assignment is mathematical fastidiousness; to such a viewpoint, "x = x + 1" is nonsensical.
Nov 30, 2011 · 92. . means "any character". * means "any number of this". .* therefore means an arbitrary string of arbitrary length. ^ indicates the beginning of the string. $ indicates the end of the string.
Jul 8, 2013 · Definition. The Modulus is the remainder of the euclidean division of one number by another. % is called the modulo operation. For instance, 9 divided by 4 equals 2 but it remains 1. Here, 9 / 4 = 2 and 9 % 4 = 1. In your example: 5 divided by 7 gives 0 but it remains 5 (5 % 7 == 5). Calculation.
Aug 1, 2019 · echo $? # echoes 0. false. echo $? # echoes 1. From the manual: (acessible by calling man bash in your shell) Expands to the exit status of the most recently executed foreground pipeline. By convention an exit status of 0 means success, and non-zero return status means failure.
numpy uses tuples as indexes. In this case, this is a detailed slice assignment. [0] #means line 0 of your matrix [(0,0)] #means cell at 0,0 of your matrix [0:1] #means lines 0 to 1 excluded of your matrix [:1] #excluding the first value means all lines until line 1 excluded [1:] #excluding the last param mean all lines starting form line 1 included [:] #excluding both means all lines [::2] #the addition of a second ':' is the sampling.
Jan 17, 2018 · This is a common technique called a CSS reset. Different browsers use different default margins, causing sites to look different by margins. The * means "all elements" (a universal selector), so we are setting all elements to have zero margins, and zero padding, thus making them look the same in all browsers. answered Jan 3, 2012 at 17:07.
Oct 5, 2009 · A uni-typed language that does this is called dynamically typed. Languages such as JavaScript, Python, and Ruby are all uni-typed. Again, the typeof operator in JavaScript and the type function in Python have misleading names; they return the tags associated with the operands, not their types.
