大约有 30,000 项符合查询结果（耗时：0.0314秒） [XML]
awk without printing newline
...
awk '{sum+=$3}; END {printf "%f",sum/NR}' ${file}_${f}_v1.xls >> to-plot-p.xls
print will insert a newline by default. You dont want that to happen, hence use printf instead.
share
...
How to duplicate a whole line in Vim?
...fter line 7,
:,+t0 will copy current and next line at the beginning of the file (,+ is a synonym for the range .,.+1),
:1,t$ will copy lines from beginning till cursor position to the end (1, is a synonym for the range 1,.).
If you need to move instead of copying, use :m instead of :t.
This can b...
Java Runtime.getRuntime(): getting output from executing a command line program
... @AlbertChen pwd && ls is not just executing a single file, when you do that in a shell it executes both the /bin/pwd and /bin/ls executables. If you want to do stuff like that within java you'll need to do something like {"/bin/bash","-c", "pwd && ls"}. You probably don...
How to make a edittext box in a dialog
...
Simplest of all would be.
Create xml layout file for dialog . Add whatever view you want like
EditText , ListView , Spinner etc.
Inflate this view and set this to AlertDialog
Lets start with Layout file first.
<?xml version="1.0" encoding="utf-8"?>
<Linear...
Saving an Object (Data persistence)
...could also define your own simple utility like the following which opens a file and writes a single object to it:
def save_object(obj, filename):
with open(filename, 'wb') as output: # Overwrites any existing file.
pickle.dump(obj, output, pickle.HIGHEST_PROTOCOL)
# sample usage
save_...
Various ways to remove local Git changes
...hard [HEAD]
completely remove all staged and unstaged changes to tracked files.
I find myself often using hard resetting, when I'm like "just undo everything like if I had done a complete re-clone from the remote". In your case, where you just want your repo pristine, this would work.
Clean
git...
Get Character value from KeyCode in JavaScript… then trim
...l 128 ASCII characters in the same place. This was intentional so that any file originally encoded as ASCII can masquerade as (and be converted to) Unicode with no work required. Extended ASCII characters are not in the same place though, so if you used those characters you're out of luck.
...
How to edit log message already committed in Subversion?
...essage of a certain revision in Subversion? I accidentally wrote the wrong filename in my commit message which could be confusing later.
...
Visual Studio jump to next error shortcut?
...hift+F8 to go backwards).
Or at least that's what it is in my keyboard profile - you can go to tools\options\environment\keyboard and check out Edit.GoToNextLocation.
Note If you configured Visual Studio using VB keyboard settings, no key has been assigned to this function. You need to pick your o...
JVM option -Xss - What does it do exactly?
... @AndrewNorman: You don't compile Java runtime options into the class file, that's more an environment-specific thing. If you really need to do it in code, you can write a tiny main class whose sole job is to launch your real application with the options you need.
– T.J. C...