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How to prevent browser page caching in Rails
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Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_a...
How to change the default GCC compiler in Ubuntu?
I have installed gcc-3.3/g++-3.3 on ubuntu 11.04 which already has gcc/g++-4.4. So in my system both gcc-3.3 and 4.4 are available. I am able to call both compilers as I want. If I just call the command gcc then gcc-4.4 will get called. To call gcc-3.3, I have to use the command gcc-3.3 .
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BLE数据收发 20个字节的限制问题 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...ntor.mi ... o-128bytes/48330/12App Inventor 2 发表于 2024-11-10 10:45
谷歌上找到了答案：WriteStrings 固定为 23 个字节，而 WriteBytes 使用 MTU。
来源：https://community.ap ...
好的明白了，感谢{:8_411:}
Postgresql SELECT if string contains
... Frans van BuulFrans van Buul
1,65911 gold badge1010 silver badges66 bronze badges
5
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PHP/MySQL insert row then get 'id'
...ithin its own isolated session, which is where the ID comes from when you call mysql_insert_id() from your PHP (or LAST_INSERT_ID() in MySQL)
– rodrigo-silveira
Sep 26 '12 at 18:22
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Detect if a NumPy array contains at least one non-numeric value?
...the input could be a single float or numpy.float64 or even something oddball like a zero-dimensional array.
5 Answers
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What do ellipsis […] mean in a list?
... an infinite loop of references, so it decided to cut it short, it's not really infinite. And no, it's not really useful besides a thought experiment :)
– Óscar López
Jun 18 '13 at 3:44
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Test if string is a number in Ruby on Rails
...def is_number? string
true if Float(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string instead of passing it as a param to your helper function, t...
what is the unsigned datatype?
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Martin v. LöwisMartin v. Löwis
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a...
linq where list contains any in list
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answered May 19 '12 at 18:10
Jon SkeetJon Skeet
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