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How to get a random number in Ruby
...6). A roll in craps could be simulated with 2 + rand(6) + rand(6).
Finally, if you just need a random float, just call rand with no arguments.
As Marc-André Lafortune mentions in his answer below (go upvote it), Ruby 1.9.2 has its own Random class (that Marc-André himself helped to debug,...
How to access property of anonymous type in C#?
...null in three different situations!
o is null, so there is no object at all
o is non-null but doesn't have a property Foo
o has a property Foo but its real value happens to be null.
So this is not equivalent to the earlier examples, but may make sense if you want to treat all three cases the sa...
Access-control-allow-origin with multiple domains
...onfig I would like to specify more than one domain for the access-control-allow-origin directive. I don't want to use * . I've tried this syntax:
...
How do you sort a list in Jinja2?
...ilter allows you to specify an attribute to sort by:
{% for movie in movie_list|sort(attribute='rating') %}
See http://jinja.pocoo.org/docs/templates/#sort
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Count number of occurrences of a pattern in a file (even on same line)
When searching for number of occurrences of a string in a file, I generally use:
5 Answers
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What is the purpose of Rank2Types?
I am not really proficient in Haskell, so this might be a very easy question.
6 Answers
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Make a Bash alias that takes a parameter?
...reate a function.
alias does not accept parameters but a function can be called just like an alias. For example:
myfunction() {
#do things with parameters like $1 such as
mv "$1" "$1.bak"
cp "$2" "$1"
}
myfunction old.conf new.conf #calls `myfunction`
By the way, Bash functions def...
What's the purpose of using braces (i.e. {}) for a single-line if or loop?
...le is editor-agnostic beyond what you need, but not beyond what people actually use to edit C++. Hence "defensive".
– Steve Jessop
Aug 30 '12 at 10:11
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How do I delete all messages from a single queue using the CLI?
How do I delete all messages from a single queue using the cli?
I have the queue name and I want to clean it.
9 Answers
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micro:bit 实验05 - 用 P0 引脚读一个自己接的按钮 · App Inventor 2 中文网
... 宽度充满、高度 250
图像精灵
图像精灵_蜜蜂
30×30
标签
标签_引脚值
文本「引脚值：–」
Microbit_Io_Pin_Simple
Microbit_Io_Pin_Simple1
不可见，BluetoothDevice = BluetoothLE1
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