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Why do x86-64 systems have only a 48 bit virtual address space?
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Because that's all that's needed. 48 bits give you an address space of 256 terabyte. That's a lot. You're not going to see a system which needs more than that any time soon.
So CPU manufacturers took a shortcut. They use an instruction set...
Where can I find my .emacs file for Emacs running on Windows?
I tried looking for the .emacs file for my Windows installation for Emacs, but I could not find it. Does it have the same filename under Windows as in Unix?
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LINQ - Full Outer Join
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I don't know if this covers all cases, logically it seems correct. The idea is to take a left outer join and right outer join then take the union of the results.
var firstNames = new[]
{
new { ID = 1, Name = "John" },
new { ID = 2, Name = "Sue"...
Python JSON serialize a Decimal object
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edited Feb 23 '17 at 16:36
Jonah Bishop
11.2k44 gold badges3636 silver badges6565 bronze badges
ans...
How do I animate constraint changes?
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Two important notes:
You need to call layoutIfNeeded within the animation block. Apple actually recommends you call it once before the animation block to ensure that all pending layout operations have been completed
You need to call it specifically on the ...
How do you test functions and closures for equality?
...s Lattner wrote on the developer forums:
This is a feature we intentionally do not want to support. There are
a variety of things that will cause pointer equality of functions (in
the swift type system sense, which includes several kinds of closures)
to fail or change depending on optimiz...
How to detect if a function is called as constructor?
...oking at the ECMAScript 3rd edition spec, the steps taken when new x() is called are essentially:
Create a new object
Assign its internal [[Prototype]] property to the prototype property of x
Call x as normal, passing it the new object as this
If the call to x returned an object, return it, otherw...
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Catch All Bugs with BugTrap! - 开源 & Github - 清泛网移动版 - 专注IT技能提升
Catch All Bugs with BugTrap!Catch-All-Bugs-with-BugTrapBugTrapA tool that can catch unhandled errors and exceptions, and deliver error reports to remote support serversDownload...A tool that can catch unhandled errors and exceptions, and deliver error reports to remote support servers
Download ...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网移动版 - 专注IT技能提升
Catch All Bugs with BugTrap!Catch-All-Bugs-with-BugTrapBugTrapA tool that can catch unhandled errors and exceptions, and deliver error reports to remote support serversDownload...A tool that can catch unhandled errors and exceptions, and deliver error reports to remote support servers
Download ...