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Align button at the bottom of div using CSS
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When using position:absolute; the element will be positioned absolutely from the first positioned parent div, if it can't find one it will position absolutely from the window so you will need to make sure the content div is positioned.
To make the content div positioned, all position values that...
How can I combine two HashMap objects containing the same types?
... don't have duplicate keys, or you want values in map2 to overwrite values from map1 for duplicate keys, you can just write
map3 = new HashMap<>(map1);
map3.putAll(map2);
If you need more control over how values are combined, you can use Map.merge, added in Java 8, which uses a user-provide...
How to prevent browser page caching in Rails
...gured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_action :set_cache_headers
private
def set_cache_headers
response.headers[...
Difference between a Postback and a Callback
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A Postback occurs when the data (the whole page) on the page is posted from the client to the server..ie the data is posted-back to the server, and thus the page is refreshed (redrawn)...think of it as 'sending the server the whole page (asp.net) full of data'.
On the other hand, a callback is ...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
...ould not attempt to request the original location but use the new location from now on.
Status 302 means that the resource is temporarily located somewhere else, and the client/browser should continue requesting the original url.
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How do you determine the ideal buffer size when using FileInputStream?
I have a method that creates a MessageDigest (a hash) from a file, and I need to do this to a lot of files (>= 100,000). How big should I make the buffer used to read from the files to maximize performance?
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avoid page break inside row of table
...ide: avoid !important;
margin: 4px 0 4px 0; /* to keep the page break from cutting too close to the text in the div */
}
</style>
Even though Chrome supposedly does not recognize the 'page-break-inside: avoid;' property, this seems to keep the row content from being split in half by a...
What is the most efficient way to concatenate N arrays?
...isting of elements to add to the array can be used instead to add elements from one array to the end of another without producing a new array. With slice() it can also be used instead of concat() but there appears to be no performance advantage from doing this.
var a = [1, 2], b = ["x", "y"];
a.pus...
Express-js can't GET my static files, why?
...;
Look at the examples on this page:
//Serve static content for the app from the "public" directory in the application directory.
// GET /style.css etc
app.use(express.static(__dirname + '/public'));
// Mount the middleware at "/static" to serve static content only when their request pa...
What's so great about Lisp? [closed]
...sed Lisp loves it, yet the most popular languages these days are descended from C.
7 Answers
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