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Is there any kind of hash code function in JavaScript?
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JavaScript objects can only use strings as keys (anything else is converted to a string).
You could, alternatively, maintain an array which indexes the objects in question, and use its index string as a reference to the object. Something like this:
var Ob...
insert a NOT NULL column to an existing table
... supplied into the existing rows (i.e. 0.0 for float, 0 for integer, empty string for string, etc).
– Michael Tsang
Sep 18 '19 at 15:17
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Difference between ref and out parameters in .NET [duplicate]
...nction. It's like if you could write this:
// This is not C#
public (bool, string) GetWebThing(string name, ref Buffer paramBuffer);
// This is C#
public bool GetWebThing(string name, ref Buffer paramBuffer, out string actualUrl);
Here's a more detailed list of the effects of each alternative:
Bef...
Hiding elements in responsive layout?
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New visible classes added to Bootstrap
Extra small devices
Phones (<768px) (Class names : .visible-xs-block, hidden-xs)
Small devices
Tablets (≥768px) (Class names : .visible-sm-block, hidden-sm)
Medium devices
Desktops (≥992px) (Class names : .visible-md...
What does the @ symbol represent in objective-c?
...@ symbol. It is used in different scenarios, for example at the start of a string or to synthesise accessor methods.
4 Ans...
RandomForestClassifier vs ExtraTreesClassifier in scikit learn
Can anyone explain the difference between the RandomForestClassifier and ExtraTreesClassifier in scikit learn. I've spent a good bit of time reading the paper:
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What exactly is a C pointer if not a memory address?
...y a real memory address. This ID could be anything, even a fixed-size text string. Non-address representations may be especially useful for a C interpreter.
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How to format a string as a telephone number in C#
I have a string "1112224444' it is a telephone number. I want to format as 111-222-4444 before I store it in a file. It is on a datarecord and I would prefer to be able to do this without assigning a new variable.
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Cooler ASCII Spinners? [closed]
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you get extra points if you can make a popping sound with they system speaker!
– RCIX
Apr 22 '10 at 1:51
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'AND' vs '&&' as operator
...r. For instance,
$predA && $predB ? "foo" : "bar"
will return a string whereas
$predA and $predB ? "foo" : "bar"
will return a boolean.
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