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How to hash some string with sha256 in Java?
...nvert the string into bytes (e.g. using text.getBytes(StandardCharsets.UTF_8)) and then hash the bytes. Note that the result of the hash would also be arbitrary binary data, and if you want to represent that in a string, you should use base64 or hex... don't try to use the String(byte[], String) con...
Extracting the last n characters from a ruby string
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8 Answers
8
Active
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How to raise a ValueError?
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178
raise ValueError('could not find %c in %s' % (ch,str))
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Static function variables in Swift
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158
I don't think Swift supports static variable without having it attached to a class/struct. Try d...
How to make maven build platform independent?
...ur pom.xml
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
Absence of this means you are using platform specific encoding and that's why the warning.
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How do you find the sum of all the numbers in an array in Java?
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In java-8 you can use streams:
int[] a = {10,20,30,40,50};
int sum = IntStream.of(a).sum();
System.out.println("The sum is " + sum);
Output:
The sum is 150.
It's in the package java.util.stream
import java.util.stream.*;
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Does a favicon have to be 32x32 or 16x16?
... as the smallest baseline.
For IE, Microsoft recommends 16x16, 32x32 and 48x48 packed in the favicon.ico file.
For iOS, Apple recommends specific file names and resolutions, at most 180x180 for latest devices running iOS 8.
Android Chrome primarily uses a manifest and also relies on the Apple touch...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
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edited Mar 29 '18 at 14:02
cori
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answer...
What does -fPIC mean when building a shared library?
...e size of the global offset table. This option makes a difference on the m68k, PowerPC and SPARC. Position-independent code requires special support, and therefore works only on certain machines.
use this when building shared objects (*.so) on those mentioned architectures.
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How to rename items in values() in Django?
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From django>=1.8 you can use annotate and F object
from django.db.models import F
MyModel.objects.annotate(renamed_value=F('cryptic_value_name')).values('renamed_value')
Also extra() is going to be deprecated, from the django docs:
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