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Or versus OrElse
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OrElse is a short-circuiting operator, Or is not.
By the definition of the boolean 'or' operator, if the first term is True then the whole is definitely true - so we don't need to evaluate the second term.
OrElse knows this, so doesn't try and ev...
How do I set up a simple delegate to communicate between two view controllers?
I have two UITableViewControllers and need to pass the value from the child view controller to the parent using a delegate. I know what delegates are and just wanted to see a simple to follow example.
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Remove spaces from std::string in C++
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The best thing to do is to use the algorithm remove_if and isspace:
remove_if(str.begin(), str.end(), isspace);
Now the algorithm itself can't change the container(only modify the values), so it actually shuffles the values around and returns a pointer to where ...
Android and setting alpha for (image) view alpha
...ive is to use View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
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Eclipse / Android : “Errors running builder 'Android Pre Compiler' on project…”
... "Files and folders", "All children". In the text entry box input ".svn" (without quotes).
Restart Eclipse.
I had the same problem with .git folder, it worked like a charm.
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Are Java static calls more or less expensive than non-static calls?
Is there any performance benefit one way or another? Is it compiler/VM specific? I am using Hotspot.
12 Answers
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Format a Go string without printing?
Is there a simple way to format a string in Go without printing the string?
7 Answers
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display: inline-block extra margin [duplicate]
I'm working with a few div s that are set to display: inline-block and have a set height and width . In the HTML, if there is a line break after each div there is an automatic 5px margin add to the right and bottom of the div.
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Why does the arrow (->) operator in C exist?
... language (which I will refer as CRM for "C Reference Manual", which came with 6th Edition Unix in May 1975), operator -> had very exclusive meaning, not synonymous with * and . combination
The C language described by CRM was very different from the modern C in many respects. In CRM struct membe...
index.php not loading by default
I have just installed CentOS, Apache and PHP. When I visit my site http://example.com/myapp/ , it says "forbidden". By default it's not loading the index.php file.
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