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Remote debugging a Java application

... Edit: I noticed that some people are cutting and pasting the invocation here. The answer I originally gave was relevant for the OP only. Here's a more modern invocation style (including using the more conventional port of 8000): java -agentlib:jdwp=transport=dt_socket,...
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Can I multiply strings in Java to repeat sequences? [duplicate]

...tion]).replace("\0", "-") Replace generation with number of repetitions, and the "-" with the string (or char) you want repeated. All this does is create an empty string containing n number of 0x00 characters, and the built-in String#replace method does the rest. Here's a sample to copy and past...
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Choosing between std::map and std::unordered_map [duplicate]

... It is very important to understand that for some applications, worst case performance is crucial to know and is the deciding factor. For some hard real-time systems, having a linear worst case like the hashtable is not acceptable. std::map is always O(lg N...
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How to initialize std::vector from C-style array?

...you just need a one time initialization, you can put it in the constructor and use the two iterator vector constructor: Foo::Foo(double* w, int len) : w_(w, w + len) { } Otherwise use assign as previously suggested: void set_data(double* w, int len) { w_.assign(w, w + len); } ...
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What is the colon operator in Ruby?

...ifferent objects, even if they are equal content. == compares the content, and the equivalent checks with symbols are much faster. user system total real string 0.370000 0.000000 0.370000 ( 0.371700) str == str 0.330000 0.000000 0.330000 ( 0.326368...
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PHP 5: const vs static

In PHP 5, what is the difference between using const and static ? 7 Answers 7 ...
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How to change the output color of echo in Linux

I am trying to print a text in the terminal using echo command. 30 Answers 30 ...
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Is there a way to detect if an image is blurry?

... Yes, it is. Compute the Fast Fourier Transform and analyse the result. The Fourier transform tells you which frequencies are present in the image. If there is a low amount of high frequencies, then the image is blurry. Defining the terms 'low' and 'high' is up to you. E...
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PHP function to make slug (URL string)

...t to have a function to create slugs from Unicode strings, e.g. gen_slug('Andrés Cortez') should return andres-cortez . How should I do that? ...
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Notepad++ - How can I replace blank lines [duplicate]

I have a text file with a thousand lines of numbers like so: 6 Answers 6 ...