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How to download a file from a URL in C#?
...did mention to use HttpClient now instead: docs.microsoft.com/en-us/dotnet/api/…
– StormsEngineering
Oct 1 '19 at 21:33
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How to manage REST API versioning with spring?
...the evaluation in the method body?
As described in this SO answer you actually can have the same @RequestMapping and use a different annotation to differentiate during the actual routing that happens during runtime. To do so, you will have to:
Create a new annotation VersionRange.
Implement a Req...
Why do Java programmers like to name a variable “clazz”? [closed]
...nvention ? I think 'clazz' is not even an English word , has no meaning at all , how can so many programmers name a wrong name coincidentally ?
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JSON serialization of Google App Engine models
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There is a small mistake in the code: Where you have "output[key] = to_dict(model)" it should be: "output[key] = to_dict(value)". Besides that it's perfect. Thanks!
– arikfr
Nov 7 '09 at 22:02
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How to return a value from __init__ in Python?
...lised subclasses. But your library's users are already using your existing API. To preserve it, you override __new__ to return instances of your specialised subclasses.
– Mark Amery
Jan 13 '14 at 22:13
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What exactly is RESTful programming?
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An architectural style called REST (Representational State Transfer) advocates that web applications should use HTTP as it was originally envisioned. Lookups should use GET requests. PUT, POST, and DELETE requests should be used for mutation, creati...
Adding :default => true to boolean in existing Rails column
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change_column is a method of ActiveRecord::Migration, so you can't call it like that in the console.
If you want to add a default value for this column, create a new migration:
rails g migration add_default_value_to_show_attribute
Then in the migration created:
# That's the more generic way t...
How to get the list of all printers in computer
I need to get the list of all printers that connect to computer?
6 Answers
6
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How can i tell if an object has a key value observer attached
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Put a try catch around your removeObserver call
@try{
[someObject removeObserver:someObserver forKeyPath:somePath];
}@catch(id anException){
//do nothing, obviously it wasn't attached because an exception was thrown
}
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How to delete all datastore in Google App Engine?
Does anyone know how to delete all datastore in Google App Engine ?
28 Answers
28
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