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Dependency Injection vs Factory Pattern
...f Dependency Injection, we can solve using the factory pattern as well. Looks like when it comes to usage/design the difference between dependency injection and factory is blurred or thin.
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What are the differences between NP, NP-Complete and NP-Hard?
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I assume that you are looking for intuitive definitions, since the technical definitions require quite some time to understand. First of all, let's remember a preliminary needed concept to understand those definitions.
Decision problem: A problem w...
Python name mangling
... languages, a general guideline that helps produce better code is always make everything as hidden as possible. If in doubt about whether a variable should be private or protected, it's better to go with private.
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Change a column type from Date to DateTime during ROR migration
I need to change my column type from date to datetime for an app I am making. I don't care about the data as its still being developed.
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What's the difference between Cache-Control: max-age=0 and no-cache?
...ache-Control header. One side is where it can be sent by the web server (aka. "origin server"). The other side is where it can be sent by the browser (aka. "user agent").
When sent by the origin server
I believe max-age=0 simply tells caches (and user agents) the response is stale from the get...
What is HTML5 ARIA?
...is a spec defining support for accessible web apps. It defines bunch of markup extensions (mostly as attributes on HTML5 elements), which can be used by the web app developer to provide additional information about the semantics of the various elements to assistive technologies like screen readers. ...
How to completely remove borders from HTML table
My goal is to make an HTML page that is similar to a "photo frame". In other words, I want to make a blank page that is surrounded by 4 pictures.
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What does the (unary) * operator do in this Ruby code?
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molfmolf
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Select elements by attribute in CSS
...u can use for various scenarios which are all covered in the document I link to. Note that, despite custom data attributes being a "new HTML5 feature",
browsers typically don't have any problems supporting non-standard attributes, so you should be able to filter them with attribute selectors; and
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Get last field using awk substr
I am trying to use awk to get the name of a file given the absolute path to the file.
For example, when given the input path /home/parent/child/filename I would like to get filename
I have tried:
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