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Get the distance between two geo points
...t exceed 4 decimal degrees.
The standard formula (Haversine) is the exact one (that is, it works for any couple of longitude/latitude on earth) but is much slower as it needs 7 trigonometric and 2 square roots. If your couple of points are not too far apart, and absolute precision is not paramount,...
How to change time and timezone in iPhone simulator?
How do I change time and time zone in the iPhone simulator?
11 Answers
11
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Can I have multiple :before pseudo-elements for the same element?
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In CSS2.1, an element can only have at most one of any kind of pseudo-element at any time. (This means an element can have both a :before and an :after pseudo-element — it just cannot have more than one of each kind.)
As a result, when you have multiple :before rule...
Split value from one field to two
...tion. However you can create a user defined function for this, such as the one described in the following article:
MySQL Split String Function by Federico Cargnelutti
With that function:
DELIMITER $$
CREATE FUNCTION SPLIT_STR(
x VARCHAR(255),
delim VARCHAR(12),
pos INT
)
RETURNS VARCHAR...
Should enums in C# have their own file? [closed]
...does an extra file cost?), but it is often inconventient. Usually there's one class that's most closely associtated with the enum, and I put them in the same file.
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setTimeout or setInterval?
...s (or a lot more if your function takes a long time to execute).
Although one might think that setInterval will execute exactly every 1000ms, it is important to note that setInterval will also delay, since JavaScript isn't a multi-threaded language, which means that - if there are other parts of th...
Why are private fields private to the type, not the instance?
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I think one reason it works this way is because access modifiers work at compile time. As such, determining whether or not a given object is also the current object isn't easy to do. For example, consider this code:
public class Foo...
Delete all tags from a Git repository
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It may be more efficient to push delete all the tags in one command. Especially if you have several hundred.
In a suitable non-windows shell, delete all remote tags:
git tag | xargs -L 1 | xargs git push origin --delete
Then delete all local tags:
git tag | xargs -L 1 | xargs...
Why is Java's boolean primitive size not defined?
... question of how
much a boolean consumes, yes it does
consume at least one byte, but due to
alignment rules it may consume much
more. IMHO it is more interesting to
know that a boolean[] will consume one
byte per entry and not one bit,plus
some overhead due to alignment and for
the s...
Visual Studio: Is there a way to collapse all items of Solution Explorer?
I know that I can use Arrow Keys to collapse items of solution explorer one by one, but I would like to know if there is a way to collapse all items with only one operation. I want to know it because, today I have a solution with 6 projects that have at least two hundred files and if I try to coll...