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Why am I getting “undefined reference to sqrt” error even though I include math.h header? [duplicate
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This is a likely a linker error.
Add the -lm switch to specify that you want to link against the standard C math library (libm) which has the definition for those functions (the header just has the declaration for them - worth looking up the differenc...
Search for executable files using find command
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Error find: invalid mode ‘+111’ on findutils 4.5.11 4.fc20.
– sourcejedi
Jul 17 '14 at 10:31
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Set every cell in matrix to 0 if that row or column contains a 0
... row and column are both 1s.
Coding it will be tricky to avoid off-by-one errors etc but it should work in one pass.
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Get type of all variables
...character
typeof(3 + 四) #R pukes on unicode error
typeof(iconv("a", "latin1", "UTF-8")) #UTF-8 characters character
typeof(5 == 5) #result of a comparison: logical
How to get the class of a variable you have in R
The R function class ...
Understanding the map function
...your function should look for None and handle them, otherwise you will get errors. In Python 3 map() will stop after finishing with the shortest list. Also, in Python 3, map() returns an iterator, not a list.
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How to add hyperlink in JLabel?
...Desktop.getDesktop().browse(uri);
} catch (IOException e) { /* TODO: error handling */ }
} else { /* TODO: error handling */ }
}
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Reading binary file and looping over each byte
...ions).
– martineau
Feb 14 '16 at 19:05
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Hmm seems unlikely, link?
– codeap...
Find index of last occurrence of a substring in a string
... recent call last):
File "<stdin>", line 1, in <module>
ValueError: substring not found
The difference is when the substring is not found, rfind() returns -1 while rindex() raises an exception ValueError (Python2 link: ValueError).
If you do not want to check the rfind() return cod...
How to convert currentTimeMillis to a date in Java?
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answered Jun 12 '14 at 11:05
Faisal AshrafFaisal Ashraf
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How can I give the Intellij compiler more heap space?
...hen I make an Intellij project, I keep getting the following out of memory error.
8 Answers
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