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What is the difference between XML and XSD?
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145
Actually the XSD is XML itself. Its purpose is to validate the structure of another XML docume...
What is the difference between MySQL Server and MySQL Client
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117
The mysql server package will install the mysql database server which you can interact with us...
No empty constructor when create a service
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221
You need to add an empty constructor to your class i.e. one that takes no arguments:
public Rem...
CSS center display inline block?
...lay: inline-block to be both horizontally and vertically centered within a 100% width parent.
I used Flexbox's justify-content and align-items properties, which respectively allow you to center elements horizontally and vertically. By setting both to center on the parent, the child element (or eve...
find() with nil when there are no records
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173
Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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Likelihood of collision using most significant bits of a UUID in Java
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213
According to the documentation, the static method UUID.randomUUID() generates a type 4 UUID.
T...
How to auto-reload files in Node.js?
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edited Aug 31 '15 at 15:56
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answered Jan 18 '13 at 19:17
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Firefox 'Cross-Origin Request Blocked' despite headers
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15 Answers
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Writing your own STL Container
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212
Here's a sequence pseudo-container I pieced together from § 23.2.1\4 Note that the iterator_...
Can we omit parentheses when creating an object using the “new” operator?
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Quoting David Flanagan1:
As a special case, for the new operator only, JavaScript simplifies the grammar by allowing the parenthesis to be omitted if there are no arguments in the function call. Here are some examples using the new operator:
o = ...