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How to generate a random alpha-numeric string?
... cause encoding problems if identifiers are included in URLs or re-entered by hand.
The underlying source of randomness, or entropy, for session identifiers should come from a random number generator designed for cryptography. However, initializing these generators can sometimes be computationally ...
Given final block not properly padded
...ypt PKCS5-padded data with the wrong key, and then unpad it (which is done by the Cipher class automatically), you most likely will get the BadPaddingException (with probably of slightly less than 255/256, around 99.61%), because the padding has a special structure which is validated during unpad an...
How to start nginx via different port(other than 80)
...led/ and if this is the default configuration, then there should be a file by name: default.
Edit that file by defining your desired port; in the snippet below, we are serving the Nginx instance on port 81.
server {
listen 81;
}
To start the server, run the command line below;
sudo service ...
How to send an email with Gmail as provider using Python?
...e From:, To: and Subject: message headers, separated from the message body by a blank line and use CRLF as EOL markers.
E.g.
msg = "\r\n".join([
"From: user_me@gmail.com",
"To: user_you@gmail.com",
"Subject: Just a message",
"",
"Why, oh why"
])
...
Shortcut to create properties in Visual Studio?
...
In addition to Amra's answer, you can find other snippets by typing
Ctrl + K, Ctrl + X
Which is mapped to Edit.InsertSnippet in my Visual Studio and shows you the full list of snippets available.
Also remember that you can configure your own snippets by using the Snippets Manager...
@synthesize vs @dynamic, what are the differences?
... tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else (like the superclass or will be provided at runtime).
Uses for @dynamic are e.g. with subclasses of NSManagedObject (CoreData) or when you want to create an outlet for a property define...
Centering a div block without the width
...ner. Lastly, you relatively position the inner div the opposite direction by half of its own width (actually the outer div's width, but they are the same). Ultimately that centers the content in whatever container it's in.
You may need that empty div at the end if you depend on your "product" con...
Available text color classes in Bootstrap
I'm developing a sign up page, by putting some text as the title at the navigation bar. I want to give those texts different colors. For this purpose I'm using a separate CSS file, but I want to do this using bootstrap's CSS file.
...
Explain Python entry points?
...which is "console_scripts". Compare this answer to the more general answer by Petri. You'll see that setuptools must be using this pkg_resources mechanism to get the console_scripts and then create a shell wrapper around them. Inspiring? Use these. They are good for more than just console_scripts.
...
Reducing the space between sections of the UITableView
...et the footer/header/cell heights in Interface Builder under the size tab. By default the header/footer are set at 10.0.
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