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Populating a razor dropdownlist from a List in MVC
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You can separate out your business logic into a viewmodel, so your view has cleaner separation.
First create a viewmodel to store the Id the user will select along with a list of items that will appear in the DropDown.
ViewModel:
public cl...
how to convert an RGB image to numpy array?
... np.asarray( img, dtype="int32" )
return data
def save_image( npdata, outfilename ) :
img = Image.fromarray( np.asarray( np.clip(npdata,0,255), dtype="uint8"), "L" )
img.save( outfilename )
The 'Image.fromarray' is a little ugly because I clip incoming data to [0,255], convert to byte...
What's the difference between a Future and a Promise?
...e<String> f = ...;
f.thenApply(this::modifyString).thenAccept(System.out::println);
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How can I create a copy of an Oracle table without copying the data?
... nor will the new table have any indexes - don't get caught out trying to do a big query on the new table :-)
– hamishmcn
Nov 1 '08 at 18:09
8
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Node.js getaddrinfo ENOTFOUND
...his clear to me. Now I understand why I got strange failures when I filled out the options {...} block.
– Michael Shopsin
May 4 '15 at 15:40
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What exception classes are in the standard C++ library
...the program executes
std::domain_error <stdexcept> parameter outside the valid range
std::future_error <future> violated a std::promise/std::future condition
std::invalid_argument <stdexcept> invalid argument
std::length_error <stdexcept> lengt...
static const vs #define
...advantage that it has no type, so it can be used for any integer value without generating warnings.
Advantages of "const"s are that they can be scoped, and they can be used in situations where a pointer to an object needs to be passed.
I don't know exactly what you are getting at with the "static"...
How do I convert uint to int in C#?
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@Greg: That's true, but the default out-of-the-box setting is unchecked.
– LukeH
Jul 15 '09 at 15:03
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How to enable NSZombie in Xcode?
...r tracing. I can see part of what is going on if I debug, but can't figure out which object is "zombie-ing".
15 Answers
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Disable Automatic Reference Counting for Some Files
... in a non-ARC class (because ARC adds syntax elements that are invalid without ARC).
The same document is a bit clearer on whether you can integrate non-ARC libraries/frameworks into an ARC program: Yes. It doesn't mention whether you can use ARC libraries/frameworks in a program where all your cod...