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Unix shell script to truncate a large file
I am trying to write a Unix script which will truncate/empty a file which is continuously being written/open by an application when it reaches say 3GB of space. I know that the below command would do it :
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How does '20 seconds' work in Scala?
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There are a few things going on.
First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*.
Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler sear...
Android: TextView automatically truncate and replace last 3 char of String
If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...
Ruby on Rails form_for select field with class
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You can also add prompt option like this.
<%= f.select(:object_field, ['Item 1', 'Item 2'], {include_blank: "Select something"}, { :class => 'my_style_class' }) %>
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How to make a class conform to a protocol in Swift?
...ver an error... You might not need to implement the entire protocol in all cases and might want to build prior to doing so... it's not a big deal, but feels a bit unnecessary.
– Magoo
Mar 31 '16 at 11:52
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How to create directories recursively in ruby?
...se directories exist and need to recursively create them if necessary.
How can one do this in ruby?
6 Answers
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Create module variables in Ruby
...able to be accessed without initializing an instance of the module, but it can be changed (unlike constants in modules).
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Set custom attribute using JavaScript
...de.google.com/p/dynatree) but I am having some problems and hoping someone can help..
3 Answers
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Permanently adding a file path to sys.path in Python
I had a file called example_file.py , which I wanted to use from various other files, so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython.
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Java: int array initializes with nonzero elements
...are faced with a bug in the JIT-compiler. Compiler determines that the allocated array is filled after allocation in Arrays.fill(...), but the check for uses between the allocation and the fill is faulty. So, compiler performs an illegal optimization - it skips zeroing of allocated array.
This bug ...