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iOS 7 - How to display a date picker in place in a table view?
...uggests displaying picker in place in a table view in iOS 7. How to insert and animate a view between table view cells?
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Java8 Lambdas vs Anonymous classes
Since Java8 has been recently released and its brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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Node.js and CPU intensive requests
I've started tinkering with Node.js HTTP server and really like to write server side Javascript but something is keeping me from starting to use Node.js for my web application.
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Git mergetool with Meld on Windows
In Linux, my favorite merge tool is Meld, and I've had no problems using or configuring it to work with Git. However, in Windows it has been a different story.
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jQuery date/time picker [closed]
I've been looking around for a decent jQuery plugin that can handle both dates and times. The core UI DatePicker is great, but unfortunately I need to be able to take time in as well.
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Declaring an unsigned int in Java
...on is that most operations (such as addition, subtraction, multiplication, and left shift) are identical on a binary level for signed and unsigned integers. A few operations (division, right shift, comparison, and casting), however, are different. As of Java SE 8, new methods in the Integer class al...
What is an efficient way to implement a singleton pattern in Java? [closed]
...pt that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is the bes...
How to exit an if clause
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(This method works for ifs, multiple nested loops and other constructs that you can't break from easily.)
Wrap the code in its own function. Instead of break, use return.
Example:
def some_function():
if condition_a:
# do something and return early
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What is the difference between a heuristic and an algorithm?
What is the difference between a heuristic and an algorithm?
12 Answers
12
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Linux: compute a single hash for a given folder & contents?
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If there is a whole directory tree, you're probably better off using find and xargs. One possible command would be
find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum
And, finally, if you also need to take account of permissions and empty directories:
(find path/to/folde...