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Create instance of generic type whose constructor requires a parameter?
...: Activator.CreateInstance(typeof(T), new object[] {...}) where the object array contains the arguments for the constructor.
– Rob Vermeulen
Dec 11 '18 at 11:48
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Can one do a for each loop in java in reverse order?
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This approach may be fine for array based lists (such as ArrayList) but it would be sub-optimal for Linked Lists as each get would have to traverse the list from beginning to end (or possibly end to beginning) for each get. It is better to use a smarter i...
Remove characters from C# string
...eSpace(c) || char.IsLetterOrDigit(c)
select c
).ToArray());
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Can I specify a custom location to “search for views” in ASP.NET MVC?
... existingPaths.Add(paths);
ViewLocationFormats = existingPaths.ToArray();
}
public void AddPartialViewLocationFormat(string paths)
{
List<string> existingPaths = new List<string>(PartialViewLocationFormats);
existingPaths.Add(paths);
Partia...
How to make input type= file Should accept only pdf and xls
...fileReader.onload = function(e) {
var int32View = new Uint8Array(e.target.result);
//verify the magic number
// for JPG is 0xFF 0xD8 0xFF 0xE0 (see https://en.wikipedia.org/wiki/List_of_file_signatures)
if(int32View.length>4 &&am...
Why is isNaN(null) == false in JS?
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This is indeed disturbing. Here is an array of values that I tested:
var x = [undefined, NaN, 'blah', 0/0, null, 0, '0', 1, 1/0, -1/0, Number(5)]
It evaluates (in the Firebug console) to:
,NaN,blah,NaN,,0,0,1,Infinity,-Infinity,5
When I call x.map(isNaN) (t...
How to disable scrolling temporarily?
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You can add 32 (space) to the disabled keys array (show in the code comments).
– gblazex
Jun 30 '13 at 13:28
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Difference between id and name attributes in HTML
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Name tag for fields - This is unique per form -- unless you are doing an array which you want to pass to PHP/server-side processing. You can access it via Javascript by name, but I think that it does not appear as a node in the DOM or some restrictions may apply (you cannot use .innerHTML, for exa...
“Comparison method violates its general contract!”
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Introduced in Java 7's java.util.Arrays.sort stackoverflow.com/questions/7849539/…
– leonbloy
Jun 22 '16 at 17:28
46
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Large, persistent DataFrame in pandas
...s one: you could transcribe the file row-by-row into a pre-allocated NumPy array or memory-mapped file--np.mmap), but it's one I'll be working on in the near future. Another solution is to read the file in smaller pieces (use iterator=True, chunksize=1000) then concatenate then with pd.concat. The p...