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Check if an apt-get package is installed and then install it if it's not on Linux
...hello package the second dpkg after apt remove shows that he package has already been removed without --purge:
dpkg-query: package 'hello' is not installed and no information is available
The documentations are also very unclear, e.g.:
sudo apt dselect-upgrade
did not remove certbot when it wa...
How does a Breadth-First Search work when looking for Shortest Path?
...I seem to be missing one small part of this algorithm. I understand how a Breadth-First Search works, but I don't understand how exactly it will get me to a specific path, as opposed to just telling me where each individual node can go. I guess the easiest way to explain my confusion is to provide a...
What is the difference between C# and .NET?
...ool "ildasm.exe", which is freely available in Microsoft SDKs (and might already be on your computer), you can see how C# code is converted into meta data and IL. I've included a sample at the bottom of this answer as an example.
When you run execute .net code, what is commonly happening is the .ne...
How do I get currency exchange rates via an API such as Google Finance? [closed]
...2018. For more information please visit: https://github.com/fixerAPI/fixer#readme)
Website : http://fixer.io/
Example request :
[http://api.fixer.io/latest?base=USD][7]
Only collects one value per each day
European Central Bank Feed
Docs:
http://www.ecb.int/stats/exchange/eurofxref/html/...
Is there a way to force ASP.NET Web API to return plain text?
...
return type == typeof(string);
}
public override bool CanReadType(Type type)
{
return type == typeof(string);
}
public override Task WriteToStreamAsync(Type type, object value, Stream stream, HttpContentHeaders contentHeaders, TransportContext transportContext)...
Difference between attr_accessor and attr_accessible
...
Many people on this thread and on google explain very well that attr_accessible specifies a whitelist of attributes that are allowed to be updated in bulk (all the attributes of an object model together at the same time)
This is mainly (and only) ...
Why does this code segfault on 64-bit architecture but work fine on 32-bit?
...ion returns int (since you opted not to tell it otherwise), so it tries to read the return value according to the calling convention for an int. Hence p does not necessarily point to the allocated memory. It just so happened to work for IA32 because an int and a void* are the same size, and returned...
How do I make an attributed string using Swift?
...or something else. There are many standard attributes in Swift that have already been predefined. For example:
key name: NSAttributedString.Key.font, value: a UIFont
key name: NSAttributedString.Key.foregroundColor, value: a UIColor
key name: NSAttributedString.Key.link, value: an NSURL or NSStrin...
Does Java have something like C#'s ref and out keywords?
...
@user311130 Your code is hard to read, but you could create a new question saying something like: "I found this answer <link to my answer> but the following doesn't work <your code here>
– OscarRyz
Dec 31 '1...
How to organize a node app that uses sequelize?
...g/2012/10/30/EXPRESS-WITH-SEQUELIZE.html
EDIT: This is a very old answer! (read down for info)
It's old and limited in many ways!
First, as @jinglesthula mentioned in comments (and I experienced it too) - there are problems with requiring those files. It's because require doesn't work the same way ...