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Why does ++[[]][+[]]+[+[]] return the string “10”?
...needs to be coerced into a string first, which is "", again. Finally, 1 is added, which results in 1.
(+[] + 1) === (+"" + 1)
(+"" + 1) === (0 + 1)
(0 + 1) === 1
Let's simplify it even more:
1
+
[0]
Also, this is true in JavaScript: [0] == "0", because it's joining an array with one element. ...
How to check if an object is nullable?
...eturn false; // value-type
}
But this won't work so well if you have already boxed the value to an object variable.
Microsoft documentation: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/nullable-types/how-to-identify-a-nullable-type
...
Trying to fix line-endings with git filter-branch, but having no luck
...ct. Here's the gist of it:
$ echo "* text=auto" >.gitattributes
$ git add --renormalize .
$ git status # Show files that will be normalized
$ git commit -m "Introduce end-of-line normalization"
If any files that should not be
normalized show up in git status,
unset their text at...
Firefox Add-on RESTclient - How to input POST parameters?
I've installed Firefox RESTclient add-on but , I'm having hard time figuring out how to pass POST parameters. Is there a specific format to do this? Or is there any other tool which can be used to debug an REST API on Mac OS X ?
...
What is the 'new' keyword in JavaScript?
...ull object reference. In this case, that object reference is returned instead.
Note: constructor function refers to the function after the new keyword, as in
new ConstructorFunction(arg1, arg2)
Once this is done, if an undefined property of the new object is requested, the script will check th...
What do 3 dots next to a parameter type mean in Java?
...
M. Justin
3,11611 gold badge2121 silver badges4343 bronze badges
answered Jul 1 '10 at 14:32
kiswakiswa
...
What's the difference between “Solutions Architect” and “Applications Architect”? [closed]
... is nothing more or less than the sum of all the decisions that have been made about your application/solution/portfolio. So the title "architect" really means "decider". That says a lot, also by what it doesn't say. It doesn't say "builder". Creating a career path / hierarchy that implicitly tells ...
float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...ou asked about:
float:left;
I dislike floats because of the need to have additional markup to clear the float. As far as I'm concerned, the whole float concept was poorly designed in the CSS specs. Nothing we can do about that now though. But the important thing is it does work, and it works in al...
SQLite table constraint - unique on multiple columns
...ave other tables with unique constraints on a single column, but I want to add a constraint to the table on two columns. This is what I have that is causing an SQLiteException with the message "syntax error".
...
Difference between InvariantCulture and Ordinal string comparison
...
Liam
21.3k1717 gold badges8989 silver badges146146 bronze badges
answered Jan 29 '09 at 18:44
JaredReisingerJaredReisinger...