大约有 15,000 项符合查询结果（耗时：0.0450秒） [XML]
The shortest possible output from git log containing author and date
...
git log --pretty=format:"%h%x09%an%x09%ad%x09%s"
did the job. This outputs:
fbc3503 mads Thu Dec 4 07:43:27 2008 +0000 show mobile if phone is null...
ec36490 jesper Wed Nov 26 05:41:37 2008 +0000 Cleanup after [942]: Using timezon
ae6...
Maximum size of an Array in Javascript
Context: I'm building a little site that reads an rss feed, and updates/checks the feed in the background. I have one array to store data to display, and another which stores ID's of records that have been shown.
...
How are virtual functions and vtable implemented?
... that is how most compilers implement virtual functions.
Does the vtable exist for all objects, or only those that have at least one virtual function?
I believe the answer here is "it depends on the implementation" since the spec doesn't require vtables in the first place. However, in practice, I ...
How to import multiple .csv files at once?
...-your current working directory--and that all of them have the lower-case extension .csv.
If you then want to combine those data frames into a single data frame, see the solutions in other answers using things like do.call(rbind,...), dplyr::bind_rows() or data.table::rbindlist().
If you really wa...
Python function as a function argument?
...ion be an argument
of another function?
Yes.
def myfunc(anotherfunc, extraArgs):
anotherfunc(*extraArgs)
To be more specific ... with various arguments ...
>>> def x(a,b):
... print "param 1 %s param 2 %s"%(a,b)
...
>>> def y(z,t):
... z(*t)
...
>>> y(x...
Is object empty? [duplicate]
...(hasOwnProperty.call(obj, key)) return false;
}
return true;
}
Examples:
isEmpty(""), // true
isEmpty(33), // true (arguably could be a TypeError)
isEmpty([]), // true
isEmpty({}), // true
isEmpty({length: 0, custom_property: []}), // true
isEmpty("Hello"), // false
isEmpty([1,2,3]), //...
Can you supply arguments to the map(&:method) syntax in Ruby?
..., [12, 14, 16, 18, 20]]
Here is a conversation I had with @ArupRakshit explaining it further:
Can you supply arguments to the map(&:method) syntax in Ruby?
As @amcaplan suggested in the comment below, you could create a shorter syntax, if you rename the with method to call. In this case, r...
Getting a list of values from a list of dicts
...> map(lambda d: d['value'], l)
where l is the list.
I see this way "sexiest", but I would do it using the list comprehension.
Update:
In case that 'value' might be missing as a key use:
>>> map(lambda d: d.get('value', 'default value'), l)
Update: I'm also not a big fan of lambdas,...
“No such file or directory” error when executing a binary
I was installing a binary Linux application on Ubuntu 9.10 x86_64. The app shipped with an old version of gzip (1.2.4), that was compiled for a much older kernel:
...
How to set transform origin in SVG
...
To rotate use transform="rotate(deg, cx, cy)", where deg is the degree you want to rotate and (cx, cy) define the centre of rotation.
For scaling/resizing, you have to translate by (-cx, -cy), then scale and then translate back to (cx, cy). You can do this with ...