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How to split a string and assign it to variables

...ort ( "fmt" "strings" ) func main() { s := strings.Split("127.0.0.1:5432", ":") ip, port := s[0], s[1] fmt.Println(ip, port) } Output: 127.0.0.1 5432 One step, for example, package main import ( "fmt" "net" ) func main() { host, port, err := net.SplitHostPort...
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What is the bower (and npm) version syntax?

...ke any subsequent patch-level changes on the 1.2.x tree, starting with 1.2.0, but less than 1.3.0, you could use: "angular": "~1.2" or: "angular": "~1.2.0" This also gets you the same results as using the .x syntax: "angular": "1.2.x" But, you can use the tilde/~ syntax to be even more spec...
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Are members of a C++ struct initialized to 0 by default?

... constructors struct Snapshot { int x; double y; Snapshot():x(0),y(0) { } // other ctors / functions... }; Will initialize both x and y to 0. Note that you can use x(), y() to initialize them disregarding of their type: That's then value initialization, and usually yields a proper...
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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops

...ns: - Range. E.g. a-z matches an lower case letters from a to z E.g. 0-5 matches any number from 0 to 5 [] Match exactly one of the objects inside these brackets. E.g. [a] matches the letter a E.g. [abc] matches a single letter which can be a, b or c E.g. [a-z] matches any single lower cas...
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Finding sum of elements in Swift array

...d. Swift 3 and Swift 4: let multiples = [...] let sum = multiples.reduce(0, +) print("Sum of Array is : ", sum) Swift 2: let multiples = [...] sum = multiples.reduce(0, combine: +) Some more info: This uses Array's reduce method (documentation here), which allows you to "reduce a collectio...
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What's the simplest way to test whether a number is a power of 2 in C++?

... 190 (n & (n - 1)) == 0 is best. However, note that it will incorrectly return true for n=0, so i...
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Why does the order of the loops affect performance when iterating over a 2D array?

... 605 As others have said, the issue is the store to the memory location in the array: x[i][j]. Here'...
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Inline labels in Matplotlib

...e(np.int32) # mask stuff outside plot mask = (xy[:,0] >= 0) & (xy[:,0] < N) & (xy[:,1] >= 0) & (xy[:,1] < N) xy = xy[mask] # add to pop for p in xy: pop[l][tuple(p)] = 1.0 # find whitespace, nice place for label...
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How to find all combinations of coins when given some dollar value

...r any other convenient computer algebra system) to compute the answer for 10^10^6 dollars in a couple seconds in three lines of code. (And this was long enough ago that that’s a couple of seconds on a 75Mhz Pentium...) sh...
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Removing leading zeroes from a field in a SQL statement

...ve the leading zeroes from a particular field, which is a simple VARCHAR(10) field. So, for example, if the field contains '00001A', the SELECT statement needs to return the data as '1A'. ...