大约有 42,000 项符合查询结果（耗时：0.0297秒） [XML]
Using the RUN instruction in a Dockerfile with 'source' does not work
... Eh? If you source a script inside a shell that only exists for the command, it's not able to have a lasting effect on any future commands run, assuming that the sum total of its action is setting environment variables. So why would you use source at all, vs just bash /usr/local/bin/virtualenvwra...
File.separator vs FileSystem.getSeparator() vs System.getProperty(“file.separator”)?
...idden by calls to System.setProperty(String key, String value) or with command line parameters -Dfile.separator=/
File.separator gets the separator for the default filesystem.
FileSystems.getDefault() gets you the default filesystem.
FileSystem.getSeparator() gets you the separator character for ...
What is the difference between Cloud, Grid and Cluster? [closed]
What is the difference between Cloud, Cluster and Grid? Please give some examples of each as the definition of cloud is very broad. As answered in another question , can I call Dropbox, Gmail, Facebook, Youtube, Rapidshare etc. a Cloud?
...
Write string to output stream
...
Streams (InputStream and OutputStream) transfer binary data. If you want to write a string to a stream, you must first convert it to bytes, or in other words encode it. You can do that manually (as you suggest) using the String.getBytes(Charset) ...
Is there a unique Android device ID?
Do Android devices have a unique ID, and if so, what is a simple way to access it using Java?
52 Answers
...
pull/push from multiple remote locations
The short: is there a way to have a git repo push to and pull from a list of remote repos (rather than a single "origin")?
...
Query EC2 tags from within instance
... use a combination of the AWS metadata tool (to retrieve your instance ID) and the new Tag API to retrieve the tags for the current instance.
share
|
improve this answer
|
fo...
download file using an ajax request
...
Update April 27, 2015
Up and coming to the HTML5 scene is the download attribute. It's supported in Firefox and Chrome, and soon to come to IE11. Depending on your needs, you could use it instead of an AJAX request (or using window.location) so long ...
CSS transition shorthand with multiple properties?
I can't seem to find the correct syntax for the CSS transition shorthand with multiple properties. This doesn't do anything:
...
How can I get a precise time, for example in milliseconds in Objective-C?
...
NSDate and the timeIntervalSince* methods will return a NSTimeInterval which is a double with sub-millisecond accuracy. NSTimeInterval is in seconds, but it uses the double to give you greater precision.
In order to calculate milli...