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What's the best/easiest GUI Library for Ruby? [closed]
... while "gem install shoes" installs "3.0.1". What's up with the versoning pandemonium? Is this because _why disappeared?
– Alexander
Jan 2 '12 at 0:28
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Format bytes to kilobytes, megabytes, gigabytes
...ytes. What's the best way to format this size info to kilobytes, megabytes and gigabytes? For instance I have an MP3 that Ubuntu displays as "5.2 MB (5445632 bytes)". How would I display this on a web page as "5.2 MB" AND have files less than one megabyte display as KB and files one gigabyte and abo...
How do I use extern to share variables between source files?
...ferenced in other source files, such as file2.c.
It is important to understand the difference between defining a
variable and declaring a
variable:
A variable is declared when the compiler is informed that a
variable exists (and this is its type); it does not allocate the
storage for the variable a...
Are non-synchronised static methods thread safe if they don't modify static class variables?
...lity, etc.
This method only operates on parameters, which reside on stack and references to immutable objects on heap. Stack is inherently local to the thread, so no sharing of data occurs, ever.
Immutable objects (String in this case) are also thread-safe because once created they can't be change...
How do you make lettered lists using markdown?
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It doesn't appear that standard Markdown has this capability. You can:
Use CSS, by putting this somewhere in your markdown document (note, this will effect all ordered lists in the document)
<style type="text/css">
ol { list-style-type: u...
NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that method:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDi...
HTML text input field with currency symbol
... to have a text input field containing the "$" sign in the very beginning, and no matter what editing occurs to the field, for the sign to be persistent.
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Add object to ArrayList at specified index
... position3 all the time I'd suggest you use a HashMap with position as key and object as a value.
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What does the function then() mean in JavaScript?
...guration. Then based on that, we fetch
information about the current user, and then finally get the list of items for the current
user. Each xhrGET call takes a callback function that is executed when the server
responds.
Now of course the more levels of nesting we have, the harder the code is to r...
How to convert image to byte array
Can anybody suggest how I can convert an image to a byte array and vice versa?
12 Answers
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