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Create a devise user from Ruby console
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197
You can add false to the save method to skip the validations if you want.
User.new({:email =&...
in entity framework code first, how to use KeyAttribute on multiple columns
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155
You can specify the column order in the attributes, for instance:
public class MyEntity
{
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Is there a more elegant way of adding an item to a Dictionary safely?
...= new Dictionary<string, object>();
currentViews["Customers"] = "view1";
currentViews["Customers"] = "view2";
currentViews["Employees"] = "view1";
currentViews["Reports"] = "view1";
Basically use Add if the existence of the key indicates a bug (so you want it to throw) and the indexer otherw...
How do I catch a numpy warning like it's an exception (not just for testing)?
... for numpy.seterr:
>>> import numpy as np
>>> np.array([1])/0 #'warn' mode
__main__:1: RuntimeWarning: divide by zero encountered in divide
array([0])
>>> np.seterr(all='print')
{'over': 'warn', 'divide': 'warn', 'invalid': 'warn', 'under': 'ignore'}
>>> np.arr...
How to remove array element in mongodb?
...ollection.update(
{ _id: id },
{ $pull: { 'contact.phone': { number: '+1786543589455' } } }
);
It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value in the array (set it to null), but not to remove it c...
Outputting data from unit test in python
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14 Answers
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Greenlet Vs. Threads
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edited May 23 '17 at 12:34
Community♦
111 silver badge
answered Mar 24 '13 at 7:47
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string.Format() giving “Input string is not in correct format”
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1 Answer
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Active
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Does ARC support dispatch queues?
...ng answer…
If your deployment target is lower than iOS 6.0 or Mac OS X 10.8
You need to use dispatch_retain and dispatch_release on your queue. ARC does not manage them.
If your deployment target is iOS 6.0 or Mac OS X 10.8 or later
ARC will manage your queue for you. You do not need to (an...
Stack vs heap allocation of structs in Go, and how they relate to garbage collection
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172
It's worth noting that the words "stack" and "heap" do not appear anywhere in the language spe...