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Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy
Just started using Xcode 4.5 and I got this error in the console:
33 Answers
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Passing a std::array of unknown size to a function
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Is there a simple way to make this work, as one would with plain C-style arrays?
No. You really cannot do that unless you make your function a function template (or use another sort of container, like an std::vector, as sug...
Can I use non existing CSS classes?
...e where I show/hide a full column by jQuery via a CSS class that doesn't exist:
13 Answers
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How is set() implemented?
...e O(1) membership-checking. How are they implemented internally to allow this? What sort of data structure does it use? What other implications does that implementation have?
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Converting a string to int in Groovy
...that represents an integer value and would like to convert it to an int . Is there a groovy equivalent of Java's Integer.parseInt(String) ?
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How to use java.net.URLConnection to fire and handle HTTP requests?
Use of java.net.URLConnection is asked about pretty often here, and the Oracle tutorial is too concise about it.
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Elegant way to check for missing packages and install them?
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Yes. If you have your list of packages, compare it to the output from installed.packages()[,"Package"] and install the missing packages. Something like this:
list.of.packages <- c("ggplot2", "Rcpp")
new.packages <- list.of.packages[!(list.o...
Check if event is triggered by a human
...e a handler attached to an event and I would like it to execute only if it is triggered by a human, and not by a trigger() method. How do I tell the difference?
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How can I check if a view is visible or not in Android? [duplicate]
I set visibility to invisible like this on Android:
4 Answers
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Generating Random Passwords
When a user on our site loses his password and heads off to the Lost Password page we need to give him a new temporary password. I don't really mind how random this is, or if it matches all the "needed" strong password rules, all I want to do is give them a password that they can change later.
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