大约有 48,000 项符合查询结果（耗时：0.0825秒） [XML]
Why are Oracle table/column/index names limited to 30 characters?
I can understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
...
Java String new line
...t's better to use %n as an OS independent new-line character instead of \n and it's easier than using System.lineSeparator()
Why to use %n, because on each OS, new line refers to a different set of character(s);
Unix and modern Mac's : LF (\n)
Windows : CR LF (\r\n)
Olde...
Read user input inside a loop
...;0
BTW, if you really are using cat this way, replace it with a redirect and things become even easier:
while read line; do
read -u 3 input
echo "$input"
done 3<&0 <notify-finished
Or, you can swap stdin and unit 3 in that version -- read the file with unit 3, and just leave s...
Sending message through WhatsApp
...at whatsapp doesn't support this, I was wondering if something had changed and if there is a way to open a whatsapp 'chat' with a number that I'm sending through an intent?
...
How do you automate Javascript minification for your Java web applications?
...
minify-maven and maven yui compressor didn't play nice with ES6 features for me as of the time of this comment
– DPM
Dec 5 '17 at 16:17
...
What is an index in SQL?
What is an index in SQL? Can you explain or reference to understand clearly?
11 Answers
...
Unbalanced calls to begin/end appearance transitions for
...the real view controller, but you must have the tab bar controller present and dismiss.
share
|
improve this answer
|
follow
|
...
How can I generate a list of files with their absolute path in Linux?
...he current directory:
find "$(pwd)" -name .htaccess
or if your shell expands $PWD to the current directory:
find "$PWD" -name .htaccess
find simply prepends the path it was given to a relative path to the file from that path.
Greg Hewgill also suggested using pwd -P if you want to resolve sy...
What package naming convention do you use for personal/hobby projects in Java?
I'm already familiar with the standard Java package naming convention of using a domain name to create a unique package name (i.e. package com.stackoverflow.widgets ). However, I've never seen any recommendations for how to choose package names for personal projects. I assume because this is becaus...
How do I skip an iteration of a `foreach` loop?
In Perl I can skip a foreach (or any loop) iteration with a next; command.
8 Answers
...