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What is the best way to clear a session variable in rails?
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In general, session variable is SessionHash object, which is inherited from hash.
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Access to Modified Closure
...ariable is extended at least until the delegate or expression tree created from the anonymous function becomes eligible for garbage collection.
Outer Variables on MSDN
When a local variable or a value parameter is captured by an anonymous function, the local variable or parameter is no longer ...
Getting “unixtime” in Java
...t system time. With getEpochSecond() you get the epoch seconds (unix time) from the Instant.
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Are static fields inherited?
...and Cat::MaxHP -- in this case the subclass is "not inheriting" the static from the base class, since, so to speak, it's "hiding" it with its own homonymous one.
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Remote Connections Mysql Ubuntu
... MySQL Server, But still you need to configure MySQL users to allow access from any host.
User must be 'username'@'%' with all the required grants
To make sure that, MySQL server listens on all interfaces, run the netstat command as follows.
netstat -tulnp | grep mysql
Hope this works !
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Can I use complex HTML with Twitter Bootstrap's Tooltip?
...d for html titles using {html: true} in the function attributes, but going from 2.2.2 > 2.3.1, I had to add data-html="true" to my elements and just scrapped the {html: true} part. I really wish they would try to get things right more often the first time and not inflict breaking changes constant...
How to append text to an existing file in Java?
...rintWriter gives you access to println syntax that you're probably used to from System.out.
But the BufferedWriter and PrintWriter wrappers are not strictly necessary.
Older Java
try {
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("myfile.txt", true)));
out.println...
Chmod recursively
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Give 0777 to all files and directories starting from the current path :
chmod -R 0777 ./
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How do you test functions and closures for equality?
...s feature I, like many developers, also can't let go of my feelings coming from other languages where this is a trivial task. There are plenty of unsafeBitCast examples, most of them don't show the full picture, here's a more detailed one:
typealias SwfBlock = () -> ()
typealias ObjBlock = @conv...
Checking for empty arrays: count vs empty
...s set.
In other words, if the variable is not set, you will get a notice from PHP saying it's undefined. Therefore, before using count, it would be preferable to check the variable with isset. This is not necessary with empty.
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