大约有 47,000 项符合查询结果(耗时:0.0755秒) [XML]
Get the length of a String
...d 3.0, use test1.characters.count. But, there are a few things you should know. So, read on.
Counting characters in Swift
Before Swift 2.0, count was a global function. As of Swift 2.0, it can be called as a member function.
test1.characters.count
It will return the actual number of Unicode cha...
How to deal with page breaks when printing a large HTML table
...eherrera and Chrisbloom7. I applied the combination of your answers and it now works!
– Nurhak Kaya
Aug 3 '16 at 8:31
...
What is the difference between and ?
... are also, yes, grouping them together. At least the way I do it, I don't know about you guys.
– trysis
Aug 5 '14 at 19:11
...
Creating an empty Pandas DataFrame, then filling it?
...me
import pandas as pd
import numpy as np
todays_date = datetime.datetime.now().date()
index = pd.date_range(todays_date-datetime.timedelta(10), periods=10, freq='D')
columns = ['A','B', 'C']
Note: we could create an empty DataFrame (with NaNs) simply by writing:
df_ = pd.DataFrame(index=index,...
Lambda function in list comprehensions
...gnostic discussion this is enough.
So much for the job interview question.
Now, how to make a list of multiplier lambdas, which really multiply by consecutive integers? Well, similarly to the accepted answer, we need to break the direct tie to i by wrapping it in another lambda, which is getting cal...
form_for with nested resources
...s way works, but you can end up with extra routes that you probably don't know about. It's better to be explicit.
– cdunn2001
Jun 28 '14 at 19:13
...
What are the differences between various threading synchronization options in C#?
..."Using Other .Net synchronization classes"- some of the others you should know about:
ReaderWriterLock - allows multiple readers or a single writer (not at the same time)
ReaderWriterLockSlim - like above, lower overhead
ManualResetEvent - a gate that allows code past when open
AutoResetEvent - as...
Does PowerShell support constants?
...the Set-Variable cmdlet:
Set-Variable myvar -option Constant -value 100
Now $myvar has a constant value of 100 and cannot be modified.
share
|
improve this answer
|
follow...
Threads vs Processes in Linux
...rsion ran about 9x faster (17.38 seconds for processes, 1.93 for threads). Now this does only test creation time, but for short-lived tasks, creation time can be key.
– user17918
May 19 '09 at 15:37
...
Filename too long in Git for Windows
I'm using Git-1.9.0-preview20140217 for Windows. As I know, this release should fix the issue with too long filenames. But not for me.
...
