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How do I show/hide a UIBarButtonItem?
I created a toolbar in IB with several buttons. I would like to be able to hide/show one of the buttons depending on the state of the data in the main window.
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How to implement the activity stream in a social network
I'm developing my own social network, and I haven't found on the web examples of implementation the stream of users' actions... For example, how to filter actions for each users? How to store the action events? Which data model and object model can I use for the actions stream and for the actions it...
Converting a UNIX Timestamp to Formatted Date String
Using PHP, I want to convert UNIX timestamps to date strings similar to this: 2008-07-17T09:24:17Z
9 Answers
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release Selenium chromedriver.exe from memory
I set up a python code to run Selenium chromedriver.exe . At the end of the run I have browser.close() to close the instance. ( browser = webdriver.Chrome() ) I believe it should release chromedriver.exe from memory (I'm on Windows 7). However after each run there is one chromedriver.exe inst...
Declaring variables inside a switch statement [duplicate]
I saw a few answers to this issue, and I get it — you can't declare and assign variables inside a switch . But I'm wondering if the following is correct at throwing an error saying
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Generate all permutations of a list without adjacent equal elements
When we sort a list, like
12 Answers
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Using braces with dynamic variable names in PHP
I'm trying to use dynamic variable names (I'm not sure what they're actually called) But pretty much like this:
8 Answers
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Why and when to use Node.js? [duplicate]
Sorry if I'm a bit ambiguous, but I'm trying to understand the real advantages of using Node.js instead of other server-side language.
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How can I iterate over an enum?
I just noticed that you can not use standard math operators on an enum such as ++ or +=
21 Answers
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How to prevent a background process from being stopped after closing SSH client in Linux
I'm working on a Linux machine through SSH (Putty). I need to leave a process running during the night, so I thought I could do that by starting the process in background (with an ampersand at the end of the command) and redirecting stdout to a file.
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