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Encapsulation vs Abstraction?
...fers to the state of objects - objects encapsulate their state and hide it from the outside; outside users of the class interact with it through its methods, but cannot access the classes state directly. So the class abstracts away the implementation details related to its state.
Abstraction is a m...
Why is it possible to recover from a StackOverflowError?
...ck that caught it, any object that may be modified by any method reachable from there is now suspect. Usually it is not worthwhile to find out what happened and try to fix it.
– Simon Richter
Mar 2 '14 at 18:42
...
Bootstrap Modal immediately disappearing
.... Depending on the platform you are using, the modal code could be loaded from a number a sources. Some of the common ones are:
bootstrap.js (the full BootStrap JS suite)
bootstrap.min.js (same as above, just minified)
bootstrap-modal.js (the standalone plugin)
a dependency loader, e.g., require...
When to use a linked list over an array/array list?
...preferable over arrays when:
you need constant-time insertions/deletions from the list (such as in real-time computing where time predictability is absolutely critical)
you don't know how many items will be in the list. With arrays, you may need to re-declare and copy memory if the array grows to...
What is an intuitive explanation of the Expectation Maximization technique? [closed]
...behind this answer can be found here.
Suppose we have some data sampled from two different groups, red and blue:
Here, we can see which data point belongs to the red or blue group. This makes it easy to find the parameters that characterise each group. For example, the mean of the red group is...
How do I git rm a file without deleting it from disk? [duplicate]
... command removes the file in my system. I meant it to remove only the file from Git-repository.
2 Answers
...
FileNotFoundException while getting the InputStream object from HttpURLConnection
...his and it returns status 404. But strangely, it's also saving in DB! Also from what you mention, does it mean any REST service will only return a status code ? What if i want to return back more information such as a xml validation error message or a url if the post is successful ?
...
Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
... the highest compression level (assuming gzip -9).
You're serving the file from a CDN.
Assuming that your CSS/JavaScript files are (a) minified and (b) large enough to justify the CPU required to decompress on the user's machine, you can get significant performance gains here.
Just remember: If y...
Best design for a changelog / auditing database table? [closed]
...
In the project I'm working on, audit log also started from the very minimalistic design, like the one you described:
event ID
event date/time
event type
user ID
description
The idea was the same: to keep things simple.
However, it quickly became obvious that this minimalist...
How do I remove objects from a JavaScript associative array?
...ciative arrays, mapping keys (properties) to values.
To remove a property from an object in JavaScript you use the delete operator:
const o = { lastName: 'foo' }
o.hasOwnProperty('lastName') // true
delete o['lastName']
o.hasOwnProperty('lastName') // false
Note that when delete is applied to an...