大约有 43,000 项符合查询结果（耗时：0.0687秒） [XML]
E11000 duplicate key error index in mongodb mongoose
...xes
From comments:
Your error says that the key is named mydb.users.$email_1 which makes me suspect that you have an index on both users.email and users.local.email (The former being old and unused at the moment). Removing a field from a Mongoose model doesn't affect the database. Check with mydb.u...
How to create a private class method?
...ng a method on an explicit object (in your case self). You can use private_class_method to define class methods as private (or like you described).
class Person
def self.get_name
persons_name
end
def self.persons_name
"Sam"
end
private_class_method :persons_name
end
puts "Hey,...
Editing Javascript using Chrome Developer Tools
...nder the Sources tab of the Developer tools?
– techie_28
Jun 27 '16 at 8:44
@techie_28 not sure, open another question...
Embedding SVG into ReactJS
...rHTML:
render: function() {
return <span dangerouslySetInnerHTML={{__html: "<svg>...</svg>"}} />;
}
and React will include the markup directly without processing it at all.
share
|
...
Test parameterization in xUnit.net similar to NUnit
...]
[InlineData("Foo")]
[InlineData(9)]
[InlineData(true)]
public void Should_be_assigned_different_values(object value)
{
Assert.NotNull(value);
}
In this example xUnit will run the Should_format_the_currency_value_correctly test once for every InlineDataAttribute each time passing the specifie...
How to hide output of subprocess in Python 2.7
... use os.devnull if subprocess.DEVNULL is not available (<3.3), use check_call() instead of call() if you don't check its returned code, open files in binary mode for stdin/stdout/stderr, usage of os.system() should be discouraged, &> doesn't work for sh on Ubuntu an explicit >/dev/null ...
Split list into multiple lists with fixed number of elements
...st[List[X]] =
if (xs.size <= n) xs :: Nil
else (xs.splitAt(n)._1) :: split(n,xs.splitAt(n)._2)
share
|
improve this answer
|
follow
|
...
If I revoke an existing distribution certificate, will it mess up anything with existing apps?
...ore after it is revoked. Anyone else see this?
– Matt__C
Jan 6 '17 at 20:21
|
show 1 more comment
...
How to Get the Title of a HTML Page Displayed in UIWebView?
...
WKWebView has 'title' property, just do it like this,
func webView(_ wv: WKWebView, didFinish navigation: WKNavigation!) {
title = wv.title
}
I don't think UIWebView is suitable right now.
share
|
...
Hash and salt passwords in C#
...onfirmPassword(string password)
{
byte[] passwordHash = Hash(password, _passwordSalt);
return _passwordHash.SequenceEqual(passwordHash);
}
Before implementing any of this however, check out this post. For password hashing you may want a slow hash algorithm, not a fast one.
To that end th...