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How to get a string after a specific substring?
...ajii's. Other than that, I think @arshajii's is the best for being the fastest -- it does not create any unnecessary copies/substrings.
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What is the difference between “def” and “val” to define a function
...n
//Boolean = true
With def you can get new function on every call:
val test: () => Int = {
val r = util.Random.nextInt
() => r
}
test()
// Int = -1049057402
test()
// Int = -1049057402 - same result
def test: () => Int = {
val r = util.Random.nextInt
() => r
}
test()
// In...
How do I read / convert an InputStream into a String in Java?
... I found 11 main ways to do this (see below). And I wrote some performance tests (see results below):
Ways to convert an InputStream to a String:
Using IOUtils.toString (Apache Utils)
String result = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
Using CharStreams (Guava)
String resu...
Can you change what a symlink points to after it is created?
... a symlink and thus update the pathname referenced by it:
$ ln -s .bashrc test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 7 2009-09-23 17:12 test -> .bashrc
$ ln -s .profile test
ln: creating symbolic link `test': File exists
$ ln -s -f .profile test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 8 2009...
How can I mock requests and the response?
...w you can do it (you can run this file as-is):
import requests
import unittest
from unittest import mock
# This is the class we want to test
class MyGreatClass:
def fetch_json(self, url):
response = requests.get(url)
return response.json()
# This method will be used by the moc...
Is a LINQ statement faster than a 'foreach' loop?
...
I was interested in this question, so I did a test just now. Using .NET Framework 4.5.2 on an Intel(R) Core(TM) i3-2328M CPU @ 2.20GHz, 2200 Mhz, 2 Core(s) with 8GB ram running Microsoft Windows 7 Ultimate.
It looks like LINQ might be faster than for each loop. Here are...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...ens in your second case is that you are calling a method, defined in class testing from inside the map function. Spark sees that and since methods cannot be serialized on their own, Spark tries to serialize the whole testing class, so that the code will still work when executed in another JVM. You h...
How do I create a slug in Django?
...;
You can call slugify automatically by overriding the save method:
class Test(models.Model):
q = models.CharField(max_length=30)
s = models.SlugField()
def save(self, *args, **kwargs):
self.s = slugify(self.q)
super(Test, self).save(*args, **kwargs)
Be aware that ...
Selecting element by data attribute
...nd want more general rules about selecting with data-attributes:
$("[data-test]") will select any element that merely has the data attribute (no matter the value of the attribute). Including:
<div data-test=value>attributes with values</div>
<div data-test>attributes without val...
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
28 Answers
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