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Why does `a == b or c or d` always evaluate to True?
I am writing a security system that denies access to unauthorized users.
3 Answers
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How to find and return a duplicate value in array
... a.count(e) > 1 }
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(array)
map = {}
dup = nil
array.each do |v|
...
With arrays, why is it the case that a[5] == 5[a]?
...e as *(a + 5), and from elementary school math we know those are equal (addition is commutative).
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HTML5 Pre-resize images before uploading
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Yes, use the File API, then you can process the images with the canvas element.
This Mozilla Hacks blog post walks you through most of the process. For reference here's the assembled source code from the blog post:
// from an input element
var filesToUpload = input.files;
var f...
Reading 64bit Registry from a 32bit application
I have a c# unit test project that is compiled for AnyCPU. Our build server is a 64bit machine, and has a 64bit SQL Express instance installed.
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Git: How to remove file from historical commit?
I have commit with id 56f06019 (for example). In that commit i have accidentally commited large file (50Mb). In another commit i add the same file but in the right size (small). Now my repo when i clone is too heavy :( How to remove that large file from repo history to reduce the size of my repo ?
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Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...any different Java terms floating around. I need to install the JDK 1.6. It was my understanding that Java 6 == Java 1.6. However, when I install Java SE 6, I get a JVM that reports as version 11.0! Who can solve the madness?
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Apply CSS style attribute dynamically in Angular JS
.../div>
Here an example on fiddle that use ngStyle, and below the code with the running snippet:
angular.module('myApp', [])
.controller('MyCtrl', function($scope) {
$scope.items = [{
name: 'Misko',
title: 'Angular creator'
}, {
name: 'Igor',
title: 'Meet...
How to write LDAP query to test if user is member of a group?
I want to write an LDAP query which tests whether a user (sAMAccountName) is a member of a particular group. Is it possible to do that so that I get either 0 or 1 result records?
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Automatically add all files in a folder to a target using CMake?
I am considering switching a cross platform project from separate build management systems in Visual C++, XCode and makefiles to CMake.
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