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Remove all special characters from a string in R?
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Instead of using regex to remove those "crazy" characters, just convert them to ASCII, which will remove accents, but will keep the letters.
astr <- "Ábcdêãçoàúü"
iconv(astr, from = 'UTF-8', to = 'ASCII//TRANSLIT')
which results in
[1] "Abcdeacoauu"
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How to achieve function overloading in C?
... No. printf is not function overloading. it uses vararg !!! And C doesn't support Function Overloading.
– hqt
Jul 29 '12 at 9:49
53
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MySQL date format DD/MM/YYYY select query?
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You can use STR_TO_DATE() to convert your strings to MySQL date values and ORDER BY the result:
ORDER BY STR_TO_DATE(datestring, '%d/%m/%Y')
However, you would be wise to convert the column to the DATE data type instead of using strings.
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Separating class code into a header and cpp file
I am confused on how to separate implementation and declarations code of a simple class into a new header and cpp file. For example, how would I separate the code for the following class?
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How can I pass a member function where a free function is expected?
...unction static in which case it doesn't require any object to be called on and you can use it with the type void (*)(int, int).
If you need to access any non-static member of your class and you need to stick with function pointers, e.g., because the function is part of a C interface, your best opt...
How to adjust text font size to fit textview
Is there any way in android to adjust the textsize in a textview to fit the space it occupies?
22 Answers
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rails i18n - translating text with links inside
... can dry it a bit more.
I made one helper in my application_helper.rb:
# Converts
# "string with __link__ in the middle." to
# "string with #{link_to('link', link_url, link_options)} in the middle."
def string_with_link(str, link_url, link_options = {})
match = str.match(/__([^_]{2,30})__/)
if...
Read/write to Windows registry using Java
...n = " + value);
Here is the original class. Just copy paste it and it should work:
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.ArrayList;
import java.util.List;
import java.util.pre...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...ty as to the usage.
Example:
You want to generate random() colors. You convert three floating-point values to unsigned 8-bit values to generate a 24-bit pixel with red, green, and blue channels respectively. Depending on the interval output by random() you may end up with near-white (254,254,254...
Are typedef and #define the same in c?
I wonder if typedef and #define are the same in c ?
10 Answers
10
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