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Two-dimensional array in Swift

...[0] += [345, 678] If you had 3x2 array of 0(zeros) before these changes, now you have: [ [0, 0, 234, 345, 678], // 5 elements! [123, 456, 789], [0, 0] ] So be aware that sub arrays are mutable and you can redefine initial array that represented matrix. Examine size/bounds before access...
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Javascript : natural sort of alphanumerical strings

... This is now possible in modern browsers using localeCompare. By passing the numeric: true option, it will smartly recognize numbers. You can do case-insensitive using sensitivity: 'base'. Tested in Chrome, Firefox, and IE11. Here's ...
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What is “2's Complement”?

...ition and subtraction remains difficult. So along comes two's complement. Now you can store positive and negative integers and perform arithmetic with relative ease. There are a number of methods to convert a number into two's complement. Here's one. Convert Decimal to Two's Complement Convert t...
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Best ways to teach a beginner to program? [closed]

...cts: Hello World! Take the year of my birth, and calculate my age (just (now - then) no month corrections). (simple math, input, output) Ask for a direction(Up, down, left, right), then tell the user their fate (fall in a hole, find a cake, ect). (Boolean logic) FizzBuzz, but count once every seco...
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PostgreSQL: Show tables in PostgreSQL

... list all databases and users by \l command, (list other commands by \?). Now if you want to see other databases you can change user/database by \c command like \c template1, \c postgres postgres and use \d, \dt or \dS to see tables/views/etc. ...
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How to add external library in IntelliJ IDEA?

...e today are most probably using an IDE that supports this simple method by now – German Jun 23 '15 at 13:47 4 ...
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What is the difference between bottom-up and top-down?

...tree may be infinitely large. Furthermore, in some problems you might not know what the full tree looks like ahead of time. Thus, you might need a strategy/algorithm to decide which subproblems to reveal.) Memoization, Tabulation There are at least two main techniques of dynamic programming whic...
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What does the `forall` keyword in Haskell/GHC do?

... OK, I got my six hours and can now decode your answer. :) Between you and Norman I got exactly the kind of answer I was looking for. Thanks. – JUST MY correct OPINION Jun 19 '10 at 0:37 ...
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Static Initialization Blocks

...ould be executed once per constructed instance rather than once in total. Now in this particular case, you could use a static method instead: public class Foo { private static final int widgets = getWidgets(); static int getWidgets() { int first = Widgets.getFirstCount(); ...
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vbscript output to console

...lly switches to CSCript if required Dim CONS: Set CONS = New cCONSOLE '// Now we can use the Consol object to write to and read from the console With CONS '// Simply write a line .print "CSCRIPT Console demo script" '// Arguments are passed through correctly, if present .Print ...