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Determine whether JSON is a JSONObject or JSONArray
I am going to receive either a JSON Object or Array from server, but I have no idea which it will be. I need to work with the JSON, but to do so, I need to know if it is an Object or an Array.
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background function in Python
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I prefer to use gevent for this sort of thing:
import gevent
from gevent import monkey; monkey.patch_all()
greenlet = gevent.spawn( function_to_download_image )
display_message()
# ... perhaps interaction with the user here
# this will wait for the operation to complete (optional)
gr...
Color in git-log
...13), you can use %C(auto) to decorate %d in the format string of git log.
From the release notes:
* "git log --format" specifier learned %C(auto) token that tells Git
to use color when interpolating %d (decoration), %h (short commit
object name), etc. for terminal output.)
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How do sessions work in Express.js with Node.js?
...e like a placeholder for the session than a holder of actual session data.
From here, it looks like this session data on the server is by default held in memory, although that could be altered to whatever storage form implements the appropriate API.
So if you want to check things without a specifi...
Enum ToString with user friendly strings
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I use the Description attribute from the System.ComponentModel namespace. Simply decorate the enum:
private enum PublishStatusValue
{
[Description("Not Completed")]
NotCompleted,
Completed,
Error
};
Then use this code to retrieve it:
pub...
How do I prevent the modification of a private field in a class?
... @Svish I should’ve been more drastic: if you return an array from an API function you’re doing it wrong. In private functions inside a library it might be right. In an API (where protection against modifiability plays a role), it never is.
– Konrad Rudolph
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pip installing in global site-packages instead of virtualenv
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I had this problem too. Calling pip install <package_name> from the /bin directory within my Python 3.3 virtual environment on my Mavericks Mac caused the Python package to be installed in the Python 2.7 global site packages directory. This was despite the fact that my $PATH started...
Prompt for user input in PowerShell
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Read-Host is a simple option for getting string input from a user.
$name = Read-Host 'What is your username?'
To hide passwords you can use:
$pass = Read-Host 'What is your password?' -AsSecureString
To convert the password to plain text:
[Runtime.InteropServices.Marshal]...
Typedef function pointer?
...sion about the entanglement of the alias and name. I learned something new from reading this post.
– Mad Physicist
Apr 7 '15 at 20:51
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How to properly compare two Integers in Java?
...ividual operator's documentation to see whether it's applied. For example, from the docs for == and != (JLS 15.21.1):
If the operands of an equality
operator are both of numeric type, or
one is of numeric type and the other
is convertible (§5.1.8) to numeric
type, binary numeric promoti...