大约有 2,000 项符合查询结果（耗时：0.0254秒） [XML]
Rails: Default sort order for a rails model?
...7 separate queries.
You can use a passed in parameter such as a date or a user_id (something that will change at run-time and so will need that 'lazy evaluation', with a lambda, like this:
scope :recent_books, lambda
{ |since_when| where("created_at >= ?", since_when) }
# Note the `where` ...
How to disassemble one single function using objdump?
... If you use column -ts$'\t' to filter the GDB output, you'll have the raw bytes and source columns nicely aligned. Also, -ex 'set disassembly-flavor intel' before other -exs will result in Intel assembly syntax.
– Ruslan
Oct 4 '18 at 12:39
...
Plotting two variables as lines using ggplot2 on the same graph
... nice example, but how to customize my own colours (E.g. black and orange)?, because it seems that you are using colour= as the variable name.
– Darwin PC
Oct 27 '15 at 14:23
...
Scroll to a div using jquery
...iv id="element" style="position:absolute;top:200%;left:0%;background-color:orange;height:100px;width:200px;">
The DIV element.
</div>
</body>
</html>
share
|...
What is the difference between :focus and :active?
...</div>
div:focus {
background: green;
}
div:active {
color: orange;
}
div:focus:active {
font-weight: bold;
}
When the page loads both are in case 1. When you press tab you will focus the second div and see it exhibit case 2. When you click on the first div you see case 3. When y...
How to delete from a text file, all lines that contain a specific string?
...ext file contents without that string.
– A Clockwork Orange
Mar 23 '11 at 20:03
115
@A Clockwork:...
Convert Python dictionary to JSON array
...sr/lib/python2.7/json/decoder.py", line 365, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.7/json/decoder.py", line 381, in raw_decode
obj, end = self.scan_once(s, idx)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xff in position 0: invalid start...
Git fails when pushing commit to github
... I got similar troubles behind a ADSL wireless router (French Orange Livebox): impossible to publish my SSH key at github.com, push stuck over https... until I use an alternate internet access.
– Yves Martin
Sep 17 '12 at 20:11
...
What is the difference between Reader and InputStream?
...
An InputStream is the raw method of getting information from a resource. It grabs the data byte by byte without performing any kind of translation. If you are reading image data, or any binary file, this is the stream to use.
A Reader is design...
How To Set Text In An EditText
...his the most upvoted & accepted answer?
– Hendy Irawan
Jan 29 '18 at 5:23
|
show 2 more comments
...