大约有 41,000 项符合查询结果（耗时：0.0694秒） [XML]
Show and hide a View with a slide up/down animation
I have a LinearLayout that I want to show or hide with an Animation that pushes the layout upwards or downwards whenever I change its visibility.
...
Assigning default value while creating migration file
...
Default migration generator does not handle default values (column modifiers are supported but do not include default or null), but you could create your own generator.
You can also manually update the migration file prior to running rake db:migrate...
How to map atan2() to degrees 0-360
...
Probably also want x >= 0 for the x = 0 case.
– bpw1621
Nov 19 '11 at 16:14
13
...
python: how to send mail with TO, CC and BCC?
I need for testing purposes to populate few hundred email boxes with various messages, and was going to use smtplib for that. But among other things I need to be able to send messages not only TO specific mailboxes, but CC and BCC them as well. It does not look like smtplib supports CC-ing and B...
Specify format for input arguments argparse python
...hon script that requires some command line inputs and I am using argparse for parsing them. I found the documentation a bit confusing and couldn't find a way to check for a format in the input parameters. What I mean by checking format is explained with this example script:
...
Transfer-Encoding: gzip vs. Content-Encoding: gzip
...
Quoting Roy T. Fielding, one of the authors of RFC 2616:
changing content-encoding on the fly in an inconsistent manner
(neither "never" nor "always) makes it impossible for later requests
regarding that content (e.g., PUT or conditional GET) to be handled
...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
...d all the instance method be defined using the => ("fat arrow") operator and all the static methods being defined using the -> operator?
...
Make: how to continue after a command fails?
The command $ make all gives errors such as rm: cannot remove '.lambda': No such file or directory so it stops. I want it to ignore the rm-not-found-errors. How can I force-make?
...
How to check if type of a variable is string?
...nd unicode. It can be used to test whether an object is an instance of str or unicode.
In Python 3.x, the correct test is
isinstance(s, str)
The bytes class isn't considered a string type in Python 3.
share
|
...
Useful example of a shutdown hook in Java?
...ou could do the following:
Let the shutdown hook set some AtomicBoolean (or volatile boolean) "keepRunning" to false
(Optionally, .interrupt the working threads if they wait for data in some blocking call)
Wait for the working threads (executing writeBatch in your case) to finish, by calling the T...