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How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
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What does string::npos mean in this code?
What does the phrase std::string::npos mean in the following snippet of code?
12 Answers
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How to get the first element of the List or Set? [duplicate]
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In Java >=8 you could also use the Streaming API:
Optional<String> first = set.stream().findFirst();
(Useful if the Set/List may be empty.)
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Convert PHP closing tag into comment
One of the lines in my script contains a PHP closing tag inside a string. Under normal operation this does not cause a problem, but I need to comment out the line.
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
...= 4.0 Use the TimeSpan class.
TimeSpan t = TimeSpan.FromSeconds( secs );
string answer = string.Format("{0:D2}h:{1:D2}m:{2:D2}s:{3:D3}ms",
t.Hours,
t.Minutes,
t.Seconds,
t.Milliseconds);
(As noted by Inder Kumar Rathore) For .NE...
Difference between ProcessBuilder and Runtime.exec()
...arious overloads of Runtime.getRuntime().exec(...) take either an array of strings or a single string. The single-string overloads of exec() will tokenise the string into an array of arguments, before passing the string array onto one of the exec() overloads that takes a string array. The ProcessB...
js中int和string互换（js int转string，js string转int） - 更多技术 - 清...
js中int和string互换（js int转string，js string转int）js-int-string-interchangeJavascript 本身就是弱类型的语言，通常情况下，不用自己刻意去转。若需要转换的话，可以使用toString()、parseInt()函数等。Javascript 本身就是弱类型的语言，通常情...
Is there a performance gain in using single quotes vs double quotes in ruby?
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Benchmark.bm(15) do |x|
x.report("assign single") { n.times do; c = 'a string'; end}
x.report("assign double") { n.times do; c = "a string"; end}
x.report("concat single") { n.times do; 'a string ' + 'b string'; end}
x.report("concat double") { n.times do; "a string " + "b string"; end}
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StringBuilder vs String concatenation in toString() in Java
Given the 2 toString() implementations below, which one is preferred:
18 Answers
18
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how to convert java string to Date object [duplicate]
I have a string
5 Answers
5
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