大约有 44,000 项符合查询结果（耗时：0.0661秒） [XML]
Remove the last line from a file in Bash
...sed.
MacOS:
On Mac OS X (as of 10.7.4), the equivalent of the sed -i command above is
sed -i '' -e '$ d' foo.txt
share
|
improve this answer
|
follow
|
...
How to delete the contents of a folder?
...
If you're working with a very large directory, and particularly a network directory on windows, and you can control the environment in which this program runs, it might be worth using Py3.5's "os.scandir(folder)" function instead of listdir. The syntax is quite different ...
How to make sure that string is valid JSON using JSON.NET
...
Through Code:
Your best bet is to use parse inside a try-catch and catch exception in case of failed parsing. (I am not aware of any TryParse method).
(Using JSON.Net)
Simplest way would be to Parse the string using JToken.Parse, and also to check if the string starts with { or [ and end...
Test if a variable is set in bash when using “set -o nounset”
...
I tried this and I'm surprised this works... Everything is correct except according to "info bash", "${WHATEVER-}" should have a ":" (colon) before the "-" (dash) like: "${WHATEVER:-}", and "${WHATEVER+defined}" should have a colon before...
Go Error Handling Techniques [closed]
...
Your code is idiomatic and in my opinion it is the best practice available. Some would disagree for sure, but I would argue that this is the style seen all over the standard libraries in Golang. In other words, Go authors write error handling in th...
Are single quotes allowed in HTML?
...es in HTML become so popular?. Single quotes around attributes in HTML are and always have been permitted by the specification. I don't think any browsers wouldn't understand them.
share
|
improve t...
MyISAM versus InnoDB [closed]
... a projects which involves a lot of database writes, I'd say ( 70% inserts and 30% reads ). This ratio would also include updates which I consider to be one read and one write. The reads can be dirty (e.g. I don't need 100% accurate information at the time of read).
The task in question will be ...
Renaming a branch in GitHub
...
As mentioned, delete the old one on GitHub and re-push, though the commands used are a bit more verbose than necessary:
git push origin :name_of_the_old_branch_on_github
git push origin new_name_of_the_branch_that_is_local
Dissecting the commands a bit, the git push ...
Can I see changes before I save my file in Vim?
I use Vim.
I open a file. I edit it and I want to see what I've edited before I save it.
14 Answers
...
Linux command (like cat) to read a specified quantity of characters
Is there a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
...