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Load RSA public key from file
...
Below is the relevant information from the link which Zaki provided.
Generate a 2048-bit RSA private key
$ openssl genrsa -out private_key.pem 2048
Convert private Key to PKCS#8 format (so Java can read it)
$ openssl pkcs8 -topk8 -inform PEM -outform DER -in private_...
How to access command line arguments of the caller inside a function?
...e command-line arguments, you must pass them in. Otherwise, you're clearly calling a function without arguments.
That said, you could if you like store the command-line arguments in a global array to use within other functions:
my_function() {
echo "stored arguments:"
for arg in "${command...
What is the difference between a thread and a fiber?
...o get right.
With a fiber, control only switches when you tell it to, typically with a function call named something like yield(). This makes concurrent data access easier, since you don't have to worry about atomicity of data structures or mutexes. As long as you don't yield, there's no danger o...
Is there a good reason to use upper case for SQL keywords? [closed]
...t's just a matter of style, probably originating in the days when editors didn't do code colouring.
I used to prefer all upper case, but I'm now leaning towards all lower.
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Hiding elements in responsive layout?
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Extra small devices
Phones (<768px) (Class names : .visible-xs-block, hidden-xs)
Small devices
Tablets (≥768px) (Class names : .visible-sm-block, hidden-sm)
Medium devices
Desktops (≥992px) (Class names : .visible-md-block, hidden-md)
Large devices
Desktops (≥1200px) (Class names : .vis...
typeof for RegExp
...ethods or properties, or by its internal class value (by using {}.toString.call(instaceOfMyObject)).
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bodyParser is deprecated express 4
... of 2014-06-19.
app.use(bodyParser()); //Now deprecated
You now need to call the methods separately
app.use(bodyParser.urlencoded());
app.use(bodyParser.json());
And so on.
If you're still getting a warning with urlencoded you need to use
app.use(bodyParser.urlencoded({
extended: true
}))...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
... does is it establishes a transparent bidirectional connection between the caller and the sub-generator:
The connection is "transparent" in the sense that it will propagate everything correctly too, not just the elements being generated (e.g. exceptions are propagated).
The connection is "bidirect...
Reduce left and right margins in matplotlib plot
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One way to automatically do this is the bbox_inches='tight' kwarg to plt.savefig.
E.g.
import matplotlib.pyplot as plt
import numpy as np
data = np.arange(3000).reshape((100,30))
plt.imshow(data)
plt.savefig('test.png', bbox_inches='tight')
...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎 ...
...：
cn.fun123.SQLite.aix
SQLite
SQLite 是 Android 内置的小型、快速、独立的 SQL（结构化查询语言）数据库引擎。
SQL 语句用于创建、选择、更新和删除一个或多个表中的数据。SQL 允许表之间建立复杂的关系，并提供...