大约有 13,071 项符合查询结果（耗时：0.0219秒） [XML]
Folder structure for a Node.js project
I notice that Node.js projects often include folders like these:
6 Answers
6
...
Looping over arrays, printing both index and value
...
You would find the array keys with "${!foo[@]}" (reference), so:
for i in "${!foo[@]}"; do
printf "%s\t%s\n" "$i" "${foo[$i]}"
done
Which means that indices will be in $i while the elements themselves have to be accessed ...
MySQL - Make an existing Field Unique
I have an already existing table with a field that should be unique but is not. I only know this because an entry was made into the table that had the same value as another, already existing, entry and this caused problems.
...
How to printf “unsigned long” in C?
I can never understand how to print unsigned long datatype in C.
8 Answers
8
...
How do I merge my local uncommitted changes into another Git branch?
...
Since your files are not yet committed in branch1:
git stash
git checkout branch2
git stash pop
or
git stash
git checkout branch2
git stash list # to check the various stash made in different branch
git stash apply x # t...
When to use Task.Delay, when to use Thread.Sleep?
Are there good rule(s) for when to use Task.Delay versus Thread.Sleep ?
5 Answers
5...
How can you encode a string to Base64 in JavaScript?
...
You can use btoa() and atob() to convert to and from base64 encoding.
There appears to be some confusion in the comments regarding what these functions accept/return, so…
btoa() accepts a “string” where each character ...
How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
...
How to update attributes without validation
I've got a model with its validations, and I found out that I can't update an attribute without validating the object before.
...
Test if a variable is set in bash when using “set -o nounset”
The following code exits with a unbound variable error. How to fix this, while still using the set -o nounset option?
6 A...