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Calculating distance between two points, using latitude longitude?
...ct results but the small errors add up if you are processing say a GPS track. Here is an implementation of the Haversine method in Java which also takes into account height differences between two points.
/**
* Calculate distance between two points in latitude and longitude taking
* into account ...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
... if (condition(data[c]))
sum += data[c];
wouldn't. It's kosher here, since the condition ensures all data[c] that are added have the same sign, so if one overflows, both do.
I wouldn't be too sure that the compiler took that into account, though (@Mysticial, could you try with a ...
Formatting Decimal places in R
I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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How to check if a variable is a dictionary in Python?
How would you check if a variable is a dictionary in python?
4 Answers
4
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Selecting a row in DataGridView programmatically
...
Not tested, but I think you can do the following:
dataGrid.Rows[index].Selected = true;
or you could do the following (but again: not tested):
dataGrid.SelectedRows.Clear();
foreach(DataGridViewRow row in dataGrid.Rows)
{
if(YOUR CONDITION...
Efficient way to remove keys with empty strings from a dict
I have a dict and would like to remove all the keys for which there are empty value strings.
17 Answers
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Twitter's typeahead.js suggestions are not styled (have no border, transparent background, etc.)
...
So looking into the docs I now see:
By default, the dropdown menu created by typeahead.js is going to look
ugly and you'll want to style it to ensure it fits into the theme of
your web page.
My solution was thus to copy t...
Elastic search, multiple indexes vs one index and types for different data sets?
I have an application developed using the MVC pattern and I would like to index now multiple models of it, this means each model has a different data structure.
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Finding out whether a string is numeric or not
How can we check if a string is made up of numbers only. I am taking out a substring from a string and want to check if it is a numeric substring or not.
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pythonic way to do something N times without an index variable?
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Alex MartelliAlex Martelli
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