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Can anyone explain IEnumerable and IEnumerator to me? [closed]
...t property of any type. This "duck typing" approach was implemented in C# 1.0 as a way to avoid boxing when enumerating value-type collections.
– phoog
Jan 9 '12 at 15:08
3
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Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail
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@jpp not for XHTML 1.0 and HTML 4.01
– BenjaminRH
May 1 '13 at 15:18
5
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What's the difference between text/xml vs application/xml for webservice response
...encoding declared in XML processing instructions, like:
<?xml version="1.0" encoding="UTF-8"?>
can be ignored when text/xml media type is used.
They support the thesis with the definition of text/* MIME type family specification in RFC 2046, specifically the following fragment:
4.1.2. Ch...
Circle line-segment collision detection algorithm?
...lized. Thus "if (t-dt >=0.0)" first intersection exists "if (t+dt <= 1.0)" second intersection exists. This worked with testing.
– punchcard
May 12 '15 at 14:15
2
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Once upon a time, when > was faster than < … Wait, what?
...range of [0, 0.5]. Next frame, you render with GL_GREATER with a range of [1.0, 0.5]. You go back and forth, literally "flipping the sign of Z and the depth test" every frame.
This loses one bit of depth precision, but you didn't have to clear the depth buffer, which once upon a time was a rather s...
How to create the perfect OOP application [closed]
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@Jordão: In decimal, adding 0.10 ten times does give 1.00. But adding 1.0/333.0 three hundred and thirty three times does not necessarily give one in either decimal or double. In decimal, fractions that have powers of ten in the denominator are exactly represented; in doubles, ...
Should composer.lock be committed to version control?
...es then you have a lack of confidence in your versioning scheme. Versions (1.0, 1.1, 1.2, etc) should be immutable and you should avoid "dev-" and "X.*" wildcards outside of initial feature development.
Committing the lock file is a regression for your dependency management system as the dependency...
In C#, why is String a reference type that behaves like a value type?
... decided to cut out the middleman (struct handling was inefficient in .NET 1.0, and it was natural to follow Java, in which strings were already defined as a reference, rather than primitive, type. Plus, if string were a value type then converting it to object would require it to be boxed, a needles...
What is the difference between “px”, “dip”, “dp” and “sp”?
... 240 360
Density (factor of baseline 160) 1.0 1.5
Density-independent pixels 240 240
(“dip” or “dp” or “dps”)
Scale-independent pixels
(“sip” or “sp”) Depend...
Performance surprise with “as” and nullable types
...out a dozen instructions. This needed to be really efficient back in .NET 1.0 when boxing was common.
Casting to int? takes a lot more work. The value representation of the boxed integer is not compatible with the memory layout of Nullable<int>. A conversion is required and the code is tri...