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Check if a value is an object in JavaScript
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@Tresdin The best way is to run Object.prototype.toString.call(yourVar), being yourVar what you need to inspect. In case of arrays, Object.prototype.toString.call([1,2]) returns [object Array]
– Jose Rui Santos
Feb 25 '16 at 9:48
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Any reason not to use '+' to concatenate two strings?
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@martineau I think he means dynamically generating and append()ing strings to a list.
– Peter C
Apr 6 '12 at 16:17
5
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Javascript what is property in hasOwnProperty?
...rty returns a boolean value indicating whether the object on which you are calling it has a property with the name of the argument. For example:
var x = {
y: 10
};
console.log(x.hasOwnProperty("y")); //true
console.log(x.hasOwnProperty("z")); //false
However, it does not look at the prototype...
Why not infer template parameter from constructor?
...rs would require allowing non-specialized declarations without constructor calls, as in your second line. I.e., MyClass *pm here would be invalid for the same reason that a function declared template <typename T> void foo(); can't be called without explicit specialization.
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How to find SQL Server running port?
...N'Server is listening on'
GO
http://www.mssqltips.com/sqlservertip/2495/identify-sql-server-tcp-ip-port-being-used/
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How to Correctly handle Weak Self in Swift Blocks with Arguments
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Apple called blocks "closures" in their very first document for a C language extension. (Blocks or closures are an extension of C at the very first. Only MM is related to Objective-C.) Even I prefer the term "closure", too, because...
Appropriate datatype for holding percent values?
...The OP showed 2 decimal places so I assumed that 99.99% and 100.00% are valid values. If you want percents with 0 decimal places, then you can use decimal(3,2) to store them as fractions or a tinyint if you are going to store whole numbers.
– Thomas
Apr 14 '18 ...
How to know user has clicked “X” or the “Close” button?
...n is the same as not setting its .DialogResult property at all, and if you call form.Close() from your button's event handler, form.DialogResult will contain Cancel. Only assigning a value other than None or Cancel to all your form-closing buttons will allow you to make the desired distinction.
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How to clone an InputStream?
... will need to track this external close() method and prevent it from being called somehow.
UPDATE (2019):
Since Java 9 the the middle bits can be replaced with InputStream.transferTo:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
input.transferTo(baos);
InputStream firstClone = new B...
How/when to use ng-click to call a route?
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Routes monitor the $location service and respond to changes in URL (typically through the hash). To "activate" a route, you simply change the URL. The easiest way to do that is with anchor tags.
<a href="#/home">Go Home</a>
<a href="#/about">Go to About</a>
Nothing more...