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New lines inside paragraph in README.md
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According to Github API two empty lines are a new paragraph (same as here in stackoverflow)
You can test it with http://prose.io
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impro...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
...se JAXB, which contains DatatypeConverter, you'll need to install the JAXB API and JAXB Runtime from Maven.
Example usage:
byte bytes[] = {(byte)0, (byte)0, (byte)134, (byte)0, (byte)61};
String hex = javax.xml.bind.DatatypeConverter.printHexBinary(bytes);
Will result in:
000086003D
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Picking a random element from a set
... set would have to be copied to a new array? docs.oracle.com/javase/7/docs/api/java/util/… "this method must allocate a new array even if this collection is backed by an array"
– anton1980
Nov 22 '14 at 3:19
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Changing every value in a hash in Ruby
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There is a new 'Rails way' method for this task :)
http://api.rubyonrails.org/classes/Hash.html#method-i-transform_values
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follo...
NullPointerException in Java with no StackTrace
...ortunate part of this is that it doesn't behave as you expect. The logger API actually takes Object as the first argument, not a string - and then it calls toString() on the argument. So instead of getting the nice pretty stack trace, it just prints out the toString - which in the case of NPE is p...
Python list of dictionaries search
... suggested in his comment and provide a default using a slightly different API:
next((item for item in dicts if item["name"] == "Pam"), None)
And to find the index of the item, rather than the item itself, you can enumerate() the list:
next((i for i, item in enumerate(dicts) if item["name"] == "...
Injecting a mock into an AngularJS service
...g the server for data, that's what $httpBackend is for (docs.angularjs.org/api/ngMock.$httpBackend). I'm not sure what else would be a concern in the factory of the service that would require mocking the whole service.
– dnc253
Jun 13 '13 at 16:33
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Setting default values for columns in JPA
...hat in a complex application, sooner or later you will need a non-standard API anyway. And @ColumnDefault is an example when it outweigts the negatives of using a non-standard solution.
2) It's nice how everyone waves @PrePersist or constructor member initialization. But that's NOT the same. How ab...
Safely limiting Ansible playbooks to a single machine?
...h works with etc/ansible/hosts (which is populated using the EC2 discovery API), but sometimes I really just need a single machine. Thank you!
– Vic
May 2 '14 at 2:17
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String replacement in java, similar to a velocity template
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Javadoc for StrSubstitutor commons.apache.org/lang/api-release/org/apache/commons/lang/…
– Paul
May 18 '11 at 5:17
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