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Why does sizeof(x++) not increment x?
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From the C99 Standard (the emphasis is mine)
6.5.3.4/2
The sizeof operator yields the size (in bytes) of its operand, which may be an expression or the parenthesized name of a type. The size is determined from the ty...
Assign one struct to another in C
...instruction in assembly, the assignment operator simply means moving data from one memory location to another memory location.
The assignment will only do it for immediate members of a structures and will fail to copy when you have Complex datatypes in a structure. Here COMPLEX means that you cant...
How to make graphics with transparent background in R using ggplot2?
I need to output ggplot2 graphics from R to PNG files with transparent background. Everything is ok with basic R graphics, but no transparency with ggplot2:
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Cleaning up sinon stubs easily
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An update to @keithjgrant answer.
From version v2.0.0 onwards, the sinon.test method has been moved to a separate sinon-test module. To make the old tests pass you need to configure this extra dependency in each test:
var sinonTest = require('sinon-test');
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What are the Ruby Gotchas a newbie should be warned about? [closed]
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Wikipedia Ruby gotchas
From the article:
Names which begin with a capital letter are treated as constants, so local variables should begin with a lowercase letter.
The characters $ and @ do not indicate variable data type as in Perl, but rather f...
Unable to verify leaf signature
...he necessary certificates to the chain. First install ssl-root-cas package from npm:
npm install ssl-root-cas
This package contains many intermediary certificates that browsers trust but node doesn't.
var sslRootCAs = require('ssl-root-cas/latest')
sslRootCAs.inject()
Will add the missing cert...
Does the APNS device token ever change, once created?
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From [Apple Documentation ApplePushService]2
The form of this phase of token trust ensures that only APNs generates
the token which it will later honor, and it can assure itself that a
token handed to it by a device i...
Performance surprise with “as” and nullable types
...isn't isinst in this case, but the additional unbox.any. This wasn't clear from Hans' answer, as he looked at the JITed code only. In general, the C# compiler will emit an unbox.any after a isinst T? (but will omit it in case you do isinst T, when T is a reference type).
Why does it do that? isinst...
Difference between await and ContinueWith
...re looking for, you update the value of some counter on the UI, and return from the method. Otherwise, you continue processing more items from LoadNextItem.
First idea for the asynchronous version: just use continuations! And let's ignore the looping part for the time being. I mean, what could poss...
In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...utoreleased at that time. The declaration of the save function prevents us from sending it anything other than an autoreleasing variable because that is what it needs - which is why the compiler creates a temporary variable if we try.
– Colin
Sep 20 '12 at 21:1...