大约有 40,000 项符合查询结果(耗时:0.0515秒) [XML]
Node.js Mongoose.js string to ObjectId function
...those who are attempting to do this, this is a much better answer than the selected answer because it will not transform the id if you are already using a mongo id.
– ed209
May 19 '15 at 13:34
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Jquery live() vs delegate() [duplicate]
...ple, every single click on the entire document has to be compared with the selector a.myClass to see if it matches. With delegate, that is only the elements within #containerElement. This will obviously improve performance.
Finally, live requires that your browser looks for a.myClass whether or n...
Eclipse: have the same file open in two editors?
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Right click on your editor tab and select "New Editor".
... unless you have a newer version of eclipse, in which case do Window -> New Editor.
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How Big can a Python List Get?
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This should be selected answer.
– Lokesh
Jan 18 '19 at 6:57
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Explicit specialization in non-namespace scope [duplicate]
... a lot. I was looking for this also as I need to access this. Wish I could select 2 answers.
– Mark
Jun 18 '10 at 3:20
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How do I restore a missing IIS Express SSL Certificate?
...es).
So, if you're using IIS Express in Visual Studio, make sure the port selected is in the required range:
vs setting for iis express
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pandas: filter rows of DataFrame with operator chaining
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Since version 0.18.1 the .loc method accepts a callable for selection. Together with lambda functions you can create very flexible chainable filters:
import numpy as np
import pandas as pd
df = pd.DataFrame(np.random.randint(0,100,size=(100, 4)), columns=list('ABCD'))
df.loc[lambda ...
How to find issues that at some point has been assigned to you?
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You can find issues by worklog entries directly in the database:
select distinct ji.pkey from jiraissue ji inner join worklog wl on ji.id=wl.issueid where wl.author='some_username';
I agree this should be implemented in the UI though.
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Check if UIColor is dark or bright?
I need to determine whether a selected UIColor (picked by the user) is dark or bright, so I can change the color of a line of text that sits on top of that color, for better readability.
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Pick a random element from an array
...low
Just to answer your question, you can do this to achieve random array selection:
let array = ["Frodo", "sam", "wise", "gamgee"]
let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
print(array[randomIndex])
The castings are ugly, but I believe they're required unless someone else h...