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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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How to auto-reload files in Node.js?
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edited Aug 31 '15 at 15:56
Community♦
111 silver badge
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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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 = ...
Tool to Unminify / Decompress JavaScript [closed]
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What does the keyword Set actually do in VBA?
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edited Feb 9 '17 at 20:42
TylerH
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
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16 Answers
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