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Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa

...an do: String[] tests = { " x ", // [x] " 1 2 3 ", // [1 2 3] "", // [] " ", // [] }; for (String test : tests) { System.out.format("[%s]%n", test.replaceAll("^ +| +$|( )+", "$1") );...
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Logical operators (“and”, “or”) in DOS batch

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What is the difference between parseInt() and Number()?

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Replace a value in a data frame based on a conditional (`if`) statement

... 221 Easier to convert nm to characters and then make the change: junk$nm <- as.character(junk$nm...
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Reload .profile in bash shell script (in unix)?

... 196 Try this to reload your current shell: source ~/.profile ...
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How to split a string in Java

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Write to .txt file?

...txt", "w"); if (f == NULL) { printf("Error opening file!\n"); exit(1); } /* print some text */ const char *text = "Write this to the file"; fprintf(f, "Some text: %s\n", text); /* print integers and floats */ int i = 1; float py = 3.1415927; fprintf(f, "Integer: %d, float: %f\n", i, py); ...
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Tooltips for cells in HTML table (no Javascript)

... 172 have you tried? <td title="This is Title"> its working fine here on Firefox v 18 (Aur...
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Overflow:hidden dots at the end

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Swift make method parameter mutable?

... 195 As stated in other answers, as of Swift 3 placing var before a variable has been deprecated. T...