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How to convert Strings to and from UTF8 byte arrays in Java
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Convert from String to byte[]:
String s = "some text here";
byte[] b = s.getBytes(StandardCharsets.UTF_8);
Convert from byte[] to String:
byte[] b = {(byte) 99, (byte)97, (byte)116};
String s = new String(b, StandardCharsets.US_A...
How to convert OutputStream to InputStream?
I am on the stage of development, where I have two modules and from one I got output as a OutputStream and second one, which accepts only InputStream . Do you know how to convert OutputStream to InputStream (not vice versa, I mean really this way) that I will be able to connect these two part...
ReactJS - Does render get called any time “setState” is called?
...date (run render function)?" every time you change state or pass new props from parent component.
You can write your own implementation of shouldComponentUpdate method for your component, but default implementation always returns true - meaning always re-run render function.
Quote from official do...
Difference between TCP and UDP?
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From the Skullbox article:
TCP (Transmission Control Protocol) is the most commonly used protocol on the Internet.
The reason for this is because TCP offers error correction. When the TCP protocol is used there is a "guarant...
Scanner vs. StringTokenizer vs. String.Split
... regular expressions API, of which String.split() is a part.
You'll note from my timings that String.split() can still tokenize thousands of strings in a few milliseconds on a typical machine. In addition, it has the advantage over StringTokenizer that it gives you the output as a string array, wh...
Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...; data
array([[5.8, 2.8],
[6. , 2.2]])
# Creating pandas dataframe from numpy array
>>> dataset = pd.DataFrame({'Column1': data[:, 0], 'Column2': data[:, 1]})
>>> print(dataset)
Column1 Column2
0 5.8 2.8
1 6.0 2.2
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Why do I get “'property cannot be assigned” when sending an SMTP email?
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mail.To and mail.From are readonly. Move them to the constructor.
using System.Net.Mail;
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MailMessage mail = new MailMessage("you@yourcompany.com", "user@hotmail.com");
SmtpClient client = new SmtpClient();
client.Port = 25;
client.Del...
What are the differences and similarities between ffmpeg, libav, and avconv?
...mmunity. It is worth noting that the maintainer for Debian/Ubuntu switched from FFmpeg to Libav on his own accord due to being involved with the Libav fork.
The real ffmpeg vs the fake one
For a while both Libav and FFmpeg separately developed their own version of ffmpeg.
Libav then renamed thei...
Prevent direct access to a php include file
...called ".htaccess" in the directory you don't want to be accessible:
Deny from all
If you actually have full control of the server (more common these days even for little apps than when I first wrote this answer), the best approach is to stick the files you want to protect outside of the director...
How do I execute a string containing Python code in Python?
...re concerned with using exec at all (unless you know the code string comes from a trusted source).
– bruno desthuilliers
Dec 2 '19 at 17:00
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