大约有 8,300 项符合查询结果（耗时：0.0194秒） [XML]
Read file data without saving it in Flask
I am writing my first flask application. I am dealing with file uploads, and basically what I want is to read the data/content of the uploaded file without saving it and then print it on the resulting page. Yes, I am assuming that the user uploads a text file always.
...
How can I check the syntax of Python script without executing it?
I used to use perl -c programfile to check the syntax of a Perl program and then exit without executing it. Is there an equivalent way to do this for a Python script?
...
How to revert a merge commit that's already pushed to remote branch?
git revert <commit_hash> alone won't work. -m must be specified, and I'm pretty confused about it.
16 Answers
...
Rename all files in directory from $filename_h to $filename_half?
...
Just use bash, no need to call external commands.
for file in *_h.png
do
mv "$file" "${file/_h.png/_half.png}"
done
Do not add #!/bin/sh
For those that need that one-liner:
for file in *.png; do mv "$file" "${file/_h.png/_half.png}"; done
...
C++ cout hex values?
...; std::hex << a;
There are many other options to control the exact formatting of the output number, such as leading zeros and upper/lower case.
share
|
improve this answer
|
...
Inline comments for Bash?
I'd like to be able to comment out a single flag in a one-line command. Bash only seems to have from # till end-of-line comments. I'm looking at tricks like:
...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...布者B] --> C
C --> D[订阅者X]
C --> E[订阅者Y]
C --> F[订阅者Z]
核心组件说明：
发布者（Publisher）：消息发送方，向特定主题发布消息
订阅者（Subscriber）：消息接收方，订阅感兴趣的主题
代理服务器（Broker）：消息...
How do you hide the Address bar in Google Chrome for Chrome Apps?
I want to increase the screen real estate for my Chrome app. The Address Bar is useless in a Chrome App and I was wondering if there was a way to disable it.
...
Android Fragment lifecycle over orientation changes
Using the compatibility package to target 2.2 using Fragments.
7 Answers
7
...
How to get arguments with flags in Bash
...do
case "$1" in
-h|--help)
echo "$package - attempt to capture frames"
echo " "
echo "$package [options] application [arguments]"
echo " "
echo "options:"
echo "-h, --help show brief help"
echo "-a, --action=ACTION specify an actio...