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Get a list of distinct values in List
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Not before the Distinct() but after, if you are trying to convert to a list. Ex: Notes.Select(x => x.Author).Distinct().ToList();
– MTwiford
Apr 4 '17 at 20:03
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Select rows of a matrix that meet a condition
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This is easier to do if you convert your matrix to a data frame using as.data.frame(). In that case the previous answers (using subset or m$three) will work, otherwise they will not.
To perform the operation on a matrix, you can define a column by nam...
Why does Node.js' fs.readFile() return a buffer instead of string?
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It is returning a Buffer object.
If you want it in a string, you can convert it with data.toString():
var fs = require("fs");
fs.readFile("test.txt", function (err, data) {
if (err) throw err;
console.log(data.toString());
});
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Measuring the distance between two coordinates in PHP
... $longitudeFrom, $latitudeTo, $longitudeTo, $earthRadius = 6371000)
{
// convert from degrees to radians
$latFrom = deg2rad($latitudeFrom);
$lonFrom = deg2rad($longitudeFrom);
$latTo = deg2rad($latitudeTo);
$lonTo = deg2rad($longitudeTo);
$latDelta = $latTo - $latFrom;
$lonDelta = $lo...
How to decide font color in white or black depending on background color?
...rked like a charm for me. Thank you very much! Did it in php though simply converting the syntax and functions.
– CezarBastos
Mar 23 '18 at 17:24
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Manually adding a Userscript to Google Chrome
... ],
"run_at": "document_end"
} ],
"converted_from_user_script": true,
"description": "My first sensibly named script!",
"name": "Hello World",
"version": "1"
}
The manifest.json file is automatically generated from the meta-block by...
Is there XNOR (Logical biconditional) operator in C#?
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In C, ! operator can be used to convert int's to "well-behaved" booleans: !a==!b.
– ivan_pozdeev
Sep 11 '14 at 14:02
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Remove unwanted parts from strings in a column
...2
3 11:00 44
4 12:00 30
5 13:00 110
If you need the result converted to an integer, you can use Series.astype,
df['result'] = df['result'].str.replace(r'\D', '').astype(int)
df.dtypes
time object
result int64
dtype: object
If you don't want to modify df in-place, use Dat...
Best way to test if a generic type is a string? (C#)
...de enumeration. Call the GetTypeCode method on classes that implement the IConvertible interface to obtain the type code for an instance of that class. IConvertible is implemented by Boolean, SByte, Byte, Int16, UInt16, Int32, UInt32, Int64, UInt64, Single, Double, Decimal, DateTime, Char, and Strin...
How can I custom-format the Autocomplete plug-in results?
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//grab user input from the search box
var val = $('#s').val()
//convert
re = new RegExp(val, "ig")
//match with the converted value
matchNew = text1.match(re);
//Find the reg expression, replace it with blue coloring/
text = text1.replace(matchNew, ("<span style='font-weight:bol...