Programmers Weekly Newsletter - Thursday, October 29, 2015

Top new questions this week: Does an interpreter produce machine code? I study the topics of compilers and interpreters intensively. I want to check if my base understanding is right, so let's assume the following: I have a language called "Foobish" and its keywords are ... compiler interpreters   asked by GrayFox 37 votes answered by Robert Harvey 72 votes Why is deletion usually much harder to implement than insertion in many data structures? Can you think of any specific reason why deletion is usually significantly harder to implement than insertion for many (most?) data structures? Quick example: linked lists. Insertion is trivial, but ... algorithms data-structures   asked by brito 30 votes answered by Robert Harvey 60 votes Why isn't the minus '-' sign generally not overloaded as the plus sign? The plus sign + is used for addition and for string concatenation, but its companion: the minus sign - is generally not seen for trimming of strings or some other case other than subtraction. I wonder ... coding-standards history operators overload   asked by Digvijay Yadav 23 votes answered by Jon Purdy 37 votes Could an instance be equal to some other instance of a more specific type? I've read this article: https://www.artima.com/lejava/articles/equality.html Basically, it provides a solution for an equals() method that supports inheritance: Point2D twoD = new Point2D(10, 20); ... java c# scala comparison   asked by Abe 22 votes answered by Idan Arye 53 votes Dependency Injection: Field Injection vs Constructor Injection? I know this is a hot debate and the opinions tend to change over time as to the best approach practice. I used to use exclusively field injection for my classes, until I started reading up on ... java dependency-injection java-ee   asked by Eric B. 13 votes answered by Robert Harvey 10 votes Is a function immediately impure if it takes a function as a parameter? Since the purity of an input parameter is an unknown until runtime, is a function immediately considered impure if it takes a function as an input parameter? Related: if a function applies a pure ... functional-programming pure-function   asked by Dancrumb 10 votes answered by Daenyth 15 votes In Scrum, should developers talk directly to customers (bypassing the PO)? How should a product owner in scrum deal with very detailed questions from the team regarding the features they are implementing that he cannot instantly answer himself? When it would clearly be the ... scrum communication product-owner   asked by tizenegy 6 votes answered by Doc Brown 16 votes Greatest hits from previous weeks: Are `break` and `continue` bad programming practices? My boss keeps mentioning nonchalantly that bad programmers use break and continue in loops. I use them all the time because they make sense; let me show you the inspiration: function verify(object) ... coding-style language-agnostic syntax readability control-structures   asked by Mikhail 95 votes answered by Klaim 125 votes Why is 80 characters the 'standard' limit for code width? Why is 80 characters the "standard" limit for code width? Why 80 and not 79, 81 or 100? What is the origin of this particular value? coding-standards history   asked by fredley 347 votes answered by Oded 514 votes Can you answer these? Git Repositories updated I would like to keep two Git Repositories updated. First one, is Github Open Source Project that gets updated frequently. Second one is a private held Git Repo located other than Github. This one ... git github   asked by bobsr 1 vote How does the Python runtime know which object a method is bound to? When defining methods in a class we do have an argument for the object on which the method is invoked i.e self. Say I have a class Foo. class Foo: def m(self): pass now when we have an ... python python-3.x   asked by Amogh Talpallikar 2 votes MVVM viewmodel to view correlation in adaptive UI I am making an mvvm application for the uwp platform and I am looking for advice on the following matter. Take for example the windows 10 e-mail application, which when full screen displays both the ... c# design windows mvvm uwp   asked by Corcus 1 vote

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