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Export database schema into SQL file
...erate scripts) option in SQL Management Studio? Does that produce what you mean by a "SQL File"?
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Is there a way to iterate over a dictionary?
...alue);
}];
Even though NSDictionary is implemented as a hashtable (which means that the cost of looking up an element is O(1)), lookups still slow down your iteration by a constant factor.
My measurements show that for a dictionary d of numbers ...
NSMutableDictionary* dict = [NSMutableDictionar...
Can an ASP.NET MVC controller return an Image?
...h.Combine(dir, id + ".jpg"); //validate the path for security or use other means to generate the path.
return base.File(path, "image/jpeg");
}
As a note, this seems to be fairly efficient. I did a test where I requested the image through the controller (http://localhost/MyController/Image/MyIm...
PHP Redirect with POST data
...
no, i mean not compared to javascript. Just in general $_SESSION alone can be a little less secure than say $_SESSION + cookie, although $_SESSION is pretty secure by itself. More info here: stackoverflow.com/questions/17413480/ses...
Show an image preview before upload
...to create applications that let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. Part of the File API is the FileReader interface which lets web applications asynchronously read the contents of files .
He...
Query for documents where array size is greater than 1
... {$exists: false}},
{name: {$size: 0}},
{name: {$size: 1}}
]}
It means "all documents except those without a name (either non existant or empty array) or with just one name."
Test:
> db.test.save({})
> db.test.save({name: []})
> db.test.save({name: ['George']})
> db.test.save...
How do I use a file grep comparison inside a bash if/else statement?
... uses the return value of that command to decide how to proceed, with zero meaning true and non-zero meaning false—the same as how other return codes are interpreted by the shell, and the opposite of a language like C.
sha...
Struct Constructor in C++?
...ve created an anonymous struct and assigned it the alias "foo". This also means you will not be able to use "foo" with a scoping operator in a cpp file:
foo.h:
typedef struct{
int x;
void myFunc(int y);
} foo;
foo.cpp:
//<-- This will not work because the struct "foo" was never declared.
vo...
Parsing JSON giving “unexpected token o” error [duplicate]
... There's no such thing as a "JSON object". JSON is a string. What you mean is a "JS object".
– Joseph
Mar 25 '13 at 14:19
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Why are global variables evil? [closed]
...odules don't start with defining globals except constants. Globals are bad means variables / global state not constants.
– BlackJack
Jul 30 '17 at 14:40
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