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Can an ASP.NET MVC controller return an Image?
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536
Use the base controllers File method.
public ActionResult Image(string id)
{
var dir = Ser...
How can I sort a dictionary by key?
What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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List of all index & index columns in SQL Server DB
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30 Answers
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How to check for valid email address? [duplicate]
...e
if not re.match(r"... regex here ...", email):
# whatever
Python ≥3.4 has re.fullmatch which is preferable to re.match.
Note the r in front of the string; this way, you won't need to escape things twice.
If you have a large number of regexes to check, it might be faster to compile the reg...
How do I get the key at a specific index from a Dictionary in Swift?
...ulian Onofrei
6,77988 gold badges5252 silver badges9393 bronze badges
answered Jul 8 '14 at 20:20
Mick MacCallumMick MacCallum
122...
Convert a List into an ObservableCollection
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3 Answers
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...去编译和调试，我把代码列在下面：
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#include <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** arg...
Generate a random alphanumeric string in Cocoa
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Here's a quick and dirty implementation. Hasn't been tested.
NSString *letters = @"abcdefghi...
There is already an open DataReader associated with this Command which must be closed first
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This can happen if you execute a query while iterating over the results from another query. It...
What is Weak Head Normal Form?
...re not in normal form:
1 + 2 -- we could evaluate this to 3
(\x -> x + 1) 2 -- we could apply the function
"he" ++ "llo" -- we could apply the (++)
(1 + 1, 2 + 2) -- we could evaluate 1 + 1 and 2 + 2
Weak head normal form
An expression in weak head normal ...