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How can I check the extension of a file?
...o values (the filename without extension + just the extension). The second index ([1]) will therefor give you just the extension. The cool thing is, that this way you can also access the filename pretty easily, if needed!
sh...
How to hash some string with sha256 in Java?
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SHA-256 isn't an "encoding" - it's a one-way hash.
You'd basically convert the string into bytes (e.g. using text.getBytes(StandardCharsets.UTF_8)) and then hash the bytes. Note that the result of the hash would also be arbitrary binary data, and if you want to represent that in a strin...
How to fully remove Xcode 4
I want to remove all existing SDK versions as well as Xcode 4.
7 Answers
7
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Entity Framework - Invalid Column Name '*_ID"
...ne for you to try to make the connection between the tables. This specifically happens with ICollection and has driven me "batty" trying to figure it out.
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Proper use of errors
...g what the standard is for the use of Error s. For example, say I hand an index out of bounds exception in Java:
4 Answers...
Rails check if yield :area is defined in content_for
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not really necessary to create a helper method:
<% if @content_for_sidebar %>
<div id="sidebar">
<%= yield :sidebar %>
</div>
<% end %>
then of course in your view:
<% content_for :sideb...
Python memory usage of numpy arrays
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The field nbytes will give you the size in bytes of all the elements of the array in a numpy.array:
size_in_bytes = my_numpy_array.nbytes
Notice that this does not measures "non-element attributes of the array object" so the actual size in bytes can be a few bytes larger th...
How do I get the time of day in javascript/Node.js?
...n called its for a time check of when hours of operation.
Below is from my index.js
global.globalDay = new Date().getDay();
global.globalHours = new Date().getHours();
To call the global's value from another file
/*
Days of the Week.
Sunday = 0, Monday = 1, Tuesday = 2, Wensday = 3,...
Output array to CSV in Ruby
...e current documentation on CSV: http://ruby-doc.org/stdlib/libdoc/csv/rdoc/index.html
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How to use Morgan logger?
...mote ip, request method, http version, response status, user agent etc. It allows you to modify the log using tokens or add color to them by defining 'dev' or even logging out to an output stream, like a file.
For the purpose we thought we can use it, as in this case, we still have to use:
console...