大约有 40,000 项符合查询结果(耗时:0.0439秒) [XML]

https://stackoverflow.com/ques... 

How can I force Powershell to return an array when a call only returns one object?

...ve a Count property. Single objects (scalar) do not have a Count property. Strings have a length property so you might get false results, use the Count property: if (@($serverIps).Count -le 1)... By the way, instead of using a wildcard that can also match strings, use the -as operator: [array]$s...
https://stackoverflow.com/ques... 

Automatic vertical scroll bar in WPF TextBlock?

...cyProperty.RegisterAttached( "AppendText", typeof (string), typeof (TextBoxApppendBehaviors), new UIPropertyMetadata(null, OnAppendTextChanged)); public static string GetAppendText(TextBox textBox) { return (string)textBox.GetValue(App...
https://stackoverflow.com/ques... 

Error: Can't set headers after they are sent to the client

...eader gets sent, but then further headers (like a 30X redirect) try to add extra headers, but it's too late since the response header has already been transmitted. I'm not sure exactly what's causing your error, but look at any callbacks as potential areas to investigate. One easy tip to simplify ...
https://stackoverflow.com/ques... 

Alphabet range in Python

... >>> import string >>> string.ascii_lowercase 'abcdefghijklmnopqrstuvwxyz' If you really need a list: >>> list(string.ascii_lowercase) ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', ...
https://stackoverflow.com/ques... 

Error - trustAnchors parameter must be non-empty

...karounds as well, but those have their own side effects which will require extra future maintenance, for no payoff whatsoever. The next-best workaround is to add the row javax.net.ssl.trustStorePassword=changeit to the files /etc/java-9-openjdk/management/management.properties /etc/java-11-open...
https://stackoverflow.com/ques... 

How to recursively download a folder via FTP on Linux [closed]

...rectory Note the double slash after the server name. If you don't put an extra slash the path is relative to the home directory of user. -nH avoids the creation of a directory named after the server name -nc avoids creating a new file if it already exists on the destination (it is just skipped) ...
https://stackoverflow.com/ques... 

How can I convert JSON to CSV?

... is as easy as using two commands! pandas.read_json() To convert a JSON string to a pandas object (either a series or dataframe). Then, assuming the results were stored as df: df.to_csv() Which can either return a string or write directly to a csv-file. Based on the verbosity of previous ans...
https://stackoverflow.com/ques... 

When to use ref and when it is not necessary in C#

...ltiple return values create structs'). Take for example IPAddress.TryParse(string, out IPAddress). – Swen Kooij Dec 6 '13 at 21:47 ...
https://stackoverflow.com/ques... 

jQuery Ajax calls and the Html.AntiForgeryToken()

... it from the hidden input literal that the MVC Helper generates. The Magic string that is the header name is defined as a constant in the attribute class. <script type="text/javascript"> $(document).ready(function () { var isAbsoluteURI = new RegExp('^(?:[a-z]+:)?//', 'i'); ...
https://stackoverflow.com/ques... 

Selectors in Objective-C?

...l about the method names. In this case, the method name is just "lowercaseString", not "lowercaseString:" (note the absence of the colon). That's why you're getting NO returned, because NSString objects respond to the lowercaseString message but not the lowercaseString: message. How do you know wh...