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Validating parameters to a Bash script
... as a commentar). i did "$#" to fix it. second, the regex also matches "foo123bar". i fixed it by doing ^[0-9]+$. you may also fix it by using grep's -x option
– Johannes Schaub - litb
Mar 31 '09 at 1:21
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In Node.js, how do I “include” functions from my other files?
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Create two js files
// File cal.js
module.exports = {
sum: function(a,b) {
return...
App Inventor 2 向心力实验App - 探究向心力F与角速度ω、半径r、质量m的关...
...档
文档版本：2026.05 | 作者：App Inventor 2 中文网 www.fun123.cn
原文来源：MIT App Inventor 官方文档 | MIT App Inventor GitHub
MIT App Inventor 官方文档采用 CC BY-SA 4.0 授权。本文档由 ai2claw 整理，仅供学习参考。
NoSql vs Relational database
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123
Not all data is relational. For those situations, NoSQL can be helpful.
With that said, NoSQ...
Android 4.2: back stack behaviour with nested fragments
...re are multiple levels of nested fragments
– splinter123
Nov 28 '14 at 17:40
Cloud you give me your architecture of ne...
How to click first link in list of items after upgrading to Capybara 2.0?
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123
Try the following:
within ".item" do
click_link("Agree", :match => :first)
end
Sources...
How to efficiently build a tree from a flat structure?
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123
Store IDs of the objects in a hash table mapping to the specific object. Enumerate through all...
What is resource-ref in web.xml used for?
...endor specific deployment descriptor file
– abhihello123
Aug 1 '16 at 11:48
1
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Returning http status code from Web Api controller
... Brilliant. Saved me a ton of time.
– gls123
Apr 9 '18 at 9:23
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Creating Multifield Indexes in Mongoose / MongoDB
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Mongo json structure is like :
{"_id":"648738"
"account": {
"id": "123",
"customerId": 7879,
"name": "test"
..
..
}
}
I have tested with sample data it is perfectly working as expected.
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