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Difference between Inheritance and Composition
...ance is java.util.Stack, which currently extends java.util.Vector. This is now considered a blunder. A stack "is-NOT-a" vector; you should not be allowed to insert and remove elements arbitrarily. It should've been composition instead.
Unfortunately it's too late to rectify this design mistake, sin...
How do I fix blurry text in my HTML5 canvas?
...is ratio is 2. This essentially means that your 1000px width canvas would now need to fill 2000px to match it's stated width on the iPad display. Fortunately for us, this is done automatically by the browser. On the other hand, this is also the reason why you see less definition on images and can...
Avoiding “resource is out of sync with the filesystem”
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It now seems to be called "Refresh using native hooks or polling" (Indigo SR1).
– Oliver Bock
Aug 14 '12 at 1:21
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Calculate difference between two datetimes in MySQL
...rence between the last login time and the current time (which I get using NOW() ).
3 Answers
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Angular JS: What is the need of the directive’s link function when we already had directive’s contro
... link and controller functions and reading quite a lot about them, I think now I have the answer.
First lets understand,
How do angular directives work in a nutshell:
We begin with a template (as a string or loaded to a string)
var templateString = '<div my-directive>{{5 + 10}}</div>...
Peak detection in a 2D array
...measuring pressure under a dogs paw. I use Python for my data analysis and now I'm stuck trying to divide the paws into (anatomical) subregions.
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Django Rest Framework File Upload
...ood question. Reading RFC-2616 provides a subtlety I wasn't aware of until now. "The fundamental difference between the POST and PUT requests is reflected in the different meaning of the Request-URI. The URI in a POST request identifies the resource that will handle the enclosed entity. That resourc...
When would I need a SecureString in .NET?
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After 11 years, this answer looks now to be the 'new' correct one. The links seem to be going stale but guidance from MS is: SecureString shouldn't be used
– Richard Morgan
Jul 5 '19 at 11:24
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How can I respond to the width of an auto-sized DOM element in React?
...olution is to use a library for this like react-measure.
Update: there is now a custom hook for resize detection (which I have not tried personally): react-resize-aware. Being a custom hook, it looks more convenient to use than react-measure.
import * as React from 'react'
import Measure from 're...
How do I clear stuck/stale Resque workers?
...annoying. But this followed by heroku restart seemed to do the trick. It now shows the correct number of workers.
– Brian Armstrong
Aug 14 '12 at 5:27
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