大约有 43,000 项符合查询结果（耗时：0.0647秒） [XML]
Calculating how many minutes there are between two times
...casionally get downvotes for this answer, probably because most people are reading the answer 5 years after the original un-edited question was asked.
– Kane
Mar 26 '18 at 22:20
...
Does Notepad++ show all hidden characters?
...nly turns on or off things like tabs, spaces, EOL, etc. So if you want to read some obscure coding with text in it - you actually need to look elsewhere. I also looked at changing the coding, ASCII is not listed, and that would not make the mess invisible anyway.
...
Ruby on Rails Callback, what is difference between :before_save and :before_create?
...er_create
after_save
Update operations have exactly the same set, except read update instead of create everywhere (and UPDATE instead of INSERT).
From this, you can see that validation is carried out before the before_save and before_create callbacks.
The before_save occurs slightly before the ...
Piping both stdout and stderr in bash?
...tdout and grep sees both strings on stdin, thus filters out both.
You can read more about redirection here.
Regarding your example (POSIX):
cmd-doesnt-respect-difference-between-stdout-and-stderr 2>&1 | grep -i SomeError
or, using >=bash-4:
cmd-doesnt-respect-difference-between-stdou...
What is the convention for word separator in Java package names?
...e considered bad. Does it break tooling? Create confusion? Is it harder to read or type? For the examples given I think we can answer yes to many of those. But I can't understand an absolute ban on capital letters. A package name LikeThis (like a class name) is obviously confusing, but likeThis isn'...
Ruby on Rails: Where to define global constants?
...ass variables might act kind of surprising with inheritance and in multi-thread environments.
class Card < ActiveRecord::Base
@@colours = ['white', 'blue']
cattr_reader :colours
end
# accessible the same as above
The two options above allow you to change the returned array on each invocat...
How to find out which fonts are referenced and which are embedded in a PDF document
...e file that actually seems to have fonts embedded.
Using the normal Adobe Reader (or Foxit if you prefer). Select File->Properties on the resulting Dialog choose the Font tab. You will see a list of fonts. The ones that are embedded will state this fact in ( ) behind the font name.
...
Usage of __slots__?
... have a '__dict__' entry.
There are a lot of details if you wish to keep reading.
Why use __slots__: Faster attribute access.
The creator of Python, Guido van Rossum, states that he actually created __slots__ for faster attribute access.
It is trivial to demonstrate measurably significant faster a...
What's the difference between emulation and simulation? [duplicate]
...ate the cheaper thermometer using an expensive thermometer by rounding the reading to the nearest 0.5 C and running tests that rely on the temperature values.
share
|
improve this answer
|
...
Indentation in Go: tabs or spaces?
...e with
go fmt
or using the gofmt command directly
gofmt -w .
You can read more about it here on the golang.org blog, or from the Effective go document:
Indentation
We use tabs for indentation and gofmt emits them by default. Use spaces only if you must.
...