大约有 42,000 项符合查询结果（耗时：0.0689秒） [XML]
How to detect a textbox's content has changed
...
The only downfall of 'input' is that it is not compatible with IE < 9.
– Catfish
Mar 21 '13 at 20:02
...
Which terminal command to get just IP address and nothing else?
...
This will give you all IPv4 interfaces, including the loopback 127.0.0.1:
ip -4 addr | grep -oP '(?<=inet\s)\d+(\.\d+){3}'
This will only show eth0:
ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}'
And this way you can get...
How does one write code that best utilizes the CPU cache to improve performance?
...
The cache is there to reduce the number of times the CPU would stall waiting for a memory request to be fulfilled (avoiding the memory latency), and as a second effect, possibly to reduce the overall amount of data that needs to be transfered (preserving memory bandwidth).
Techniques for ...
Remove the bottom divider of an android ListView
... This seems to no longer work starting with 4.4.2. I can run literally the same app across my many test devices (ranging from 2.3.7 all the way up until 4.4.2) and KitKat is the only one where this seems to have no effect... Any ideas? I'm not adding a footer or header to my ListView and I'...
onActivityResult is not being called in Fragment
The activity hosting this fragment has its onActivityResult called when the camera activity returns.
39 Answers
...
vim - How to delete a large block of text without counting the lines?
...pe V (capital). Then move up/down to highlight the block you want deleted (all the usual movement commands work). Then remove it with x or d.
share
|
improve this answer
|
fo...
Does IE9 support console.log, and is it a real function?
...native ECMAScript functions and objects do. This is the reason apply and call are undefined on those methods. In IE 9, most DOM objects were improved to inherit from native ECMAScript types. As the developer tools are considered an extension to IE (albeit, a built-in extension), they clearly didn...
What is this 'Waiting for Background operation' in Visual Studio 2012?
...
I was having the same problem, especially in cshtml pages. I found this page: https://devblogs.microsoft.com/aspnet/visual-studio-11-beta-razor-editor-issue-workaround that suggests changing the indent option in Tools > Options > Text Editor > HTML >...
Images can't contain alpha channels or transparencies
...
AFAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches.
...
How do I modify fields inside the new PostgreSQL JSON datatype?
...a":[null,{"b":[1,2,3]}]}'
For inserting into JSON array (while preserving all of the original values), the jsonb_insert() function can be used (in 9.6+; this function only, in this section):
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b,0}', jsonb '2')
-- will yield jsonb '{"a":[null,{"b":[...