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JavaScript curry: what are the practical applications?
...tself—is useful in JavaScript; it is a technique for converting function calls with multiple arguments into chains of function calls with a single argument for each call, but JavaScript supports multiple arguments in a single function call.
In JavaScript—and I assume most other actual language...
Difference between __str__ and __repr__?
...yClass(3) and MyClass("3").
The goal of __str__ is to be readable
Specifically, it is not intended to be unambiguous — notice that str(3)==str("3"). Likewise, if you implement an IP abstraction, having the str of it look like 192.168.1.1 is just fine. When implementing a date/time abstraction, t...
Get index of element as child relative to parent
... lists so as a rule I try to use the above where possible rather than individual handlers on each element. One article that goes deeper is briancrescimanno.com/2008/05/19/… - also google 'javascript event delegation'
– redsquare
Feb 14 '11 at 18:55
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
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SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actually opened, for example by a call to getWritableDatabase(). The database is not opened when the database helper object itself is created.
SQLiteOpenHelper versions the database...
What is the difference between a static and a non-static initialization code block
...java class, and run only one time before the constructor or main method is called.
OK! Tell me more...
is a block of code static { ... } inside any java class. and executed by virtual machine when class is called.
No return statements are supported.
No arguments are supported.
No this or super ar...
The builds tools for v120 (Platform Toolset = 'v120') cannot be found
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Did you get this resolved? I'm having similar issue. If I build from TFS Team Build, I get the same error. However, I can build fine from VS 2013 IDE and from a VS 2013 command prompt.
– Ike Starnes
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How can you profile a Python script?
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Python includes a profiler called cProfile. It not only gives the total running time, but also times each function separately, and tells you how many times each function was called, making it easy to determine where you should make optimizations.
You ...
jQuery deferreds and promises - .then() vs .done()
...an't see the difference between using .then() & .done() for successful callbacks. I know Eric Hynds mentions that .done() and .success() map to the same functionality but I'm guessing so does .then() as all the callbacks are all invoked on a completion of a successful operation.
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Optional query string parameters in ASP.NET Web API
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Yes, null is considered a constant expression, and therefore a valid default value.
– JDawg
Nov 1 '16 at 23:06
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Send response to all clients except sender
...ude sender
io.of('myNamespace').emit('message', 'gg');
// sending to individual socketid
socket.broadcast.to(socketid).emit('message', 'for your eyes only');
// list socketid
for (var socketid in io.sockets.sockets) {}
OR
Object.keys(io.sockets.sockets).forEach((socketid) => {});
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