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What is object serialization?
...when you want to transmit one object data across the network, for instance from one JVM to another.
In Java, the serialization mechanism is built into the platform, but you need to implement the Serializable interface to make an object serializable.
You can also prevent some data in your object fr...
Why is Multiple Inheritance not allowed in Java or C#?
...can read this article:
The reasons for omitting multiple
inheritance from the Java language
mostly stem from the "simple, object
oriented, and familiar" goal. As a
simple language, Java's creators
wanted a language that most developers
could grasp without extensive
training. To tha...
Chrome extension: accessing localStorage in content script
...tml
It is pretty easy to use like the other Chrome APIs and you can use it from any page context within Chrome.
// Save it using the Chrome extension storage API.
chrome.storage.sync.set({'foo': 'hello', 'bar': 'hi'}, function() {
console.log('Settings saved');
});
// Read it ...
How to create a new java.io.File in memory?
How can I create new File (from java.io ) in memory, not on the hard disk?
3 Answers
...
Is there anyway to exclude artifacts inherited from a parent POM?
Artifacts from dependencies can be excluded by declaring an <exclusions> element inside a <dependency> But in this case it's needed to exclude an artifact inherited from a parent project. An excerpt of the POM under discussion follows:
...
Sending email in .NET through Gmail
...s mess of hacky extensions.
using System.Net;
using System.Net.Mail;
var fromAddress = new MailAddress("from@gmail.com", "From Name");
var toAddress = new MailAddress("to@example.com", "To Name");
const string fromPassword = "fromPassword";
const string subject = "Subject";
const string body = "Bo...
Using curl POST with variables defined in bash script functions
...ite a function that generates the post data of your script. This saves you from all sort of headaches concerning shell quoting and makes it easier to read an maintain the script than feeding the post data on curl's invocation line as in your attempt:
generate_post_data()
{
cat <<EOF
{
"ac...
How do I profile memory usage in Python?
... here: Python memory profiler
Basically you do something like that (cited from Guppy-PE):
>>> from guppy import hpy; h=hpy()
>>> h.heap()
Partition of a set of 48477 objects. Total size = 3265516 bytes.
Index Count % Size % Cumulative % Kind (class / dict of class)
...
Pairs from single list
...
My favorite way to do it:
from itertools import izip
def pairwise(t):
it = iter(t)
return izip(it,it)
# for "pairs" of any length
def chunkwise(t, size=2):
it = iter(t)
return izip(*[it]*size)
When you want to pair all elements you...
What are dictionary view objects?
...dow on the keys and values (or items) of a dictionary. Here is an excerpt from the official documentation for Python 3:
>>> dishes = {'eggs': 2, 'sausage': 1, 'bacon': 1, 'spam': 500}
>>> keys = dishes.keys()
>>> values = dishes.values()
>>> # view objects are...