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Getting a File's MD5 Checksum in Java
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try (InputStream is = Files.newInputStream(Paths.get("file.zip"))) {
String md5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(is);
}
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Fastest way to iterate over all the chars in a String
In Java, what would the fastest way to iterate over all the chars in a String, this:
8 Answers
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How to negate specific word in regex? [duplicate]
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Nicely done - matches a line that has the specified string and the string is not preceded by anything and the string is followed by anything.This is by definition the absence of the string! because if present it will always be preceded by something even if its a line anchor ^
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Writing Unicode text to a text file?
...you first get them and encoding them as necessary on the way out.
If your string is actually a unicode object, you'll need to convert it to a unicode-encoded string object before writing it to a file:
foo = u'Δ, Й, ק, م, ๗, あ, 叶, 葉, and 말.'
f = open('test', 'w')
f.write(foo.encod...
Best way to specify whitespace in a String.Split operation
I am splitting a string based on whitespace as follows:
11 Answers
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Converting any string into camel case
How can I convert a string into camel case using javascript regex?
33 Answers
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Counting Chars in EditText Changed Listener
...d in one of the answers, but its very inefficient
textMessage.getText().toString().length()
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generating GUID without hyphen
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Note that you are talking about the (canonical) string representation of a Guid. The Guid itself is actually a 128-bit integer value.
You can use the "N" specifier with the Guid.ToString(String) overload.
Guid.NewGuid().ToString("N");
By default letters are lowercase. ...
Will strlen be calculated multiple times if used in a loop condition?
...i < n; ++i)
or possibly
for (int i = 0; ss[i]; ++i)
as long as the string isn't going to change length during the iteration. If it might, then you'll need to either call strlen() each time, or handle it through more complicated logic.
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How to convert a number to string and vice versa in C++
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Update for C++11
As of the C++11 standard, string-to-number conversion and vice-versa are built in into the standard library. All the following functions are present in <string> (as per paragraph 21.5).
string to numeric
float stof(const string&am...