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How to work around the lack of transactions in MongoDB?
...g my project to perform atomic operations. I don't know whether this comes from my limited viewpoint (I have only worked with SQL databases so far), or whether it actually can't be done.
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Can I load a .NET assembly at runtime and instantiate a type knowing only the name?
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Yes. You need to use Assembly.LoadFrom to load the assembly into memory, then you can use Activator.CreateInstance to create an instance of your preferred type. You'll need to look the type up first using reflection. Here is a simple example:
Assembly assemb...
Convert UTF-8 encoded NSData to NSString
I have UTF-8 encoded NSData from windows server and I want to convert it to NSString for iPhone. Since data contains characters (like a degree symbol) which have different values on both platforms, how do I convert data to string?
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How to override Backbone.sync?
... create the model on the server
"read" : expected that you read this model from the server and return it
"update" : expected that you update the model on the server with the argument
"delete" : expected that you delete the model from the server.
You need to implement those 4 methods and define wha...
What are differences between AssemblyVersion, AssemblyFileVersion and AssemblyInformationalVersion?
...t to mark assemblies that have the same AssemblyVersion, but are generated from different builds.
In Windows, it can be viewed in the file properties.
The AssemblyFileVersion is optional. If not given, the AssemblyVersion is used.
I use the format: major.minor.patch.build, where I follow SemVer f...
WARNING: UNPROTECTED PRIVATE KEY FILE! when trying to SSH into Amazon EC2 Instance
...rsonal instance last night,
And this is the way it is supposed to be.
From the EC2 documentation we have "If you're using OpenSSH (or any reasonably paranoid SSH client) then you'll probably need to set the permissions of this file so that it's only readable by you." The Panda documentation yo...
Python : List of dict, if exists increment a dict value, if not append a new dict
...ecial data structure, defaultdict, created just to make this even easier:
from collections import defaultdict # available in Python 2.5 and newer
urls_d = defaultdict(int)
for url in list_of_urls:
urls_d[url] += 1
If you access the defaultdict using a key, and the key is not already in the ...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
...t:self] == NSNotFound) {
// View is disappearing because it was popped from the stack
NSLog(@"View controller was popped");
}
}
This is, of course, possible because the UINavigationController's view controller stack (exposed through the viewControllers property) has been updated by the t...
How to disable back swipe gesture in UINavigationController on iOS 7
In iOS 7 Apple added a new default navigation behavior. You can swipe from the left edge of the screen to go back on the navigation stack. But in my app, this behavior conflicts with my custom left menu. So, is it possible to disable this new gesture in UINavigationController?
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What's the difference between deadlock and livelock?
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Taken from http://en.wikipedia.org/wiki/Deadlock:
In concurrent computing, a deadlock is a state in which each member of a group of actions, is waiting for some other member to release a lock
A livelock is similar to a deadlock,
e...