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Using do block vs braces {}

... is a bit old question but I would like to try explain a bit more about {} and do .. end like it is said before bracket syntax has higher precedence order than do..end but how this one makes difference: method1 method2 do puts "hi" end in this case, method1 will be called with the bloc...
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setResult does not work when BACK button pressed

... You need to overide the onBackPressed() method and set the result before the call to superclass, i.e @Override public void onBackPressed() { Bundle bundle = new Bundle(); bundle.putString(FIELD_A, mA.getText().toString()); Intent mIntent = new Intent(); ...
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Two inline-block, width 50% elements wrap to second line [duplicate]

I would like to have two columns of 50% width space, and avoid floats. So i thought using display:inline-block . 5 Answers...
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Standard deviation of a list

I want to find mean and standard deviation of 1st, 2nd,... digits of several (Z) lists. For example, I have 8 Answers ...
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How to change Navigation Bar color in iOS 7?

... you set the translucent property to NO. Availability Available in iOS 7.0 and later. Declared In UINavigationBar.h Code NSArray *ver = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."]; if ([[ver objectAtIndex:0] intValue] >= 7) { // iOS 7.0 or later self.navig...
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How can I initialise a static Map?

...ght? I don't see why you need an extra anonymous class just to initialize. And it won't work if the class being created is final. You can create an immutable map using a static initialiser too: public class Test { private static final Map<Integer, String> myMap; static { Map&...
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jQuery .data() does not work, but .attr() does

...e doc loads, I loop some elements that originally have data-itemname="" , and I set those values using .attr("data-itemname", "someValue") . ...
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Logging levels - Logback - rule-of-thumb to assign log levels

..., so my answer is biased towards looking at it from a production support standpoint; that said, we assign roughly as follows: error: the system is in distress, customers are probably being affected (or will soon be) and the fix probably requires human intervention. The "2AM rule" applies here- if...
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What's the difference between :: (double colon) and -> (arrow) in PHP?

...to access instance members). In general, :: is used for scope resolution, and it may have either a class name, parent, self, or (in PHP 5.3) static to its left. parent refers to the scope of the superclass of the class where it's used; self refers to the scope of the class where it's used; static r...
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How to concatenate text from multiple rows into a single text string in SQL server?

...h one-to-many relationships. In SQL 2005 I found that XML PATH method can handle the concatenation of the rows very easily. If there is a table called STUDENTS SubjectID StudentName ---------- ------------- 1 Mary 1 John 1 Sam 2 Al...