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Combine two data frames by rows (rbind) when they have different sets of columns
... column names When I try this I get an error Error: Column ABC can't be converted from character to numeric. Is there a way to convert the columns first?
– sar
Mar 24 at 16:57
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How to use UTF-8 in resource properties with ResourceBundle
...to save the file as UTF-8, then you'd need to use the native2ascii tool to convert an UTF-8 saved properties file to an ISO-8859-1 saved properties file wherein all uncovered characters are converted into \uXXXX format. The below example converts a UTF-8 encoded properties file text_utf8.properties ...
Objective-C: Reading a file line by line
...hunks of N bytes (very similar to java.io.BufferedReader), but you have to convert it to an NSString on your own, then scan for newlines (or whatever other delimiter) and save any remaining characters for the next read, or read more characters if a newline hasn't been read yet. (NSFileHandle lets yo...
Array extension to remove object by value
... implement this using extensions.
The reason you get the error 'T' is not convertible to 'T' is that you are actually defining a new T in your method that is not related at all to the original T. If you wanted to use T in your method, you can do so without specifying it on your method.
The reason ...
What exactly is nullptr?
...a null pointer constant, and that an integral null pointer constant can be converted to std::nullptr_t. The opposite direction is not allowed. This allows overloading a function for both pointers and integers, and passing nullptr to select the pointer version. Passing NULL or 0 would confusingly sel...
Given an RGB value, how do I create a tint (or shade)?
... the Lightness
To tint: increase the Lightness
There exists formulas to convert from one color model to another. As per your initial question, if you are in RGB and want to use the HSV model to shade for example, you can just convert to HSV, do the shading and convert back to RGB. Formula to conv...
boolean in an if statement
...pare favorably to true, but that isn't how the type coercion works. It is converting the right hand value to match the type of the left hand value so its converting true to the number 1 so it's comparing 2 == 1 which is certainly not what you likely intended.
So, buyer beware. It's likely best to...
How do you log content of a JSON object in Node.js?
...y this one:
console.log("Session: %j", session);
If the object could be converted into JSON, that will work.
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How do I format a Microsoft JSON date?
...s JSON has a loose DateTime implementation, you need to use the IsoDateTimeConverter(). Note that since Json.NET 4.5 the default date format is ISO so the code below isn't needed.
string jsonText = JsonConvert.SerializeObject(p, new IsoDateTimeConverter());
The JSON will come through as
"fieldNa...
Excel to CSV with UTF8 encoding [closed]
... Excel file that has some Spanish characters (tildes, etc.) that I need to convert to a CSV file to use as an import file. However, when I do Save As CSV it mangles the "special" Spanish characters that aren't ASCII characters. It also seems to do this with the left and right quotes and long dashe...