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What does the (unary) * operator do in this Ruby code?
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The * is the splat operator.
It expands an Array into a list of argu<em>mem>ents, in this case a list of argu<em>mem>ents to the Hash.[] <em>mem>ethod. (To be <em>mem>ore precise, it expands any object that responds to to_ary/to_a, or to_a in Ruby 1.9.)
To illustrate, the following two state<em>mem>ents are equal:
<em>mem>ethod arg...
Why does 0.ToString(“#.##”) return an e<em>mem>pty string instead of 0.00 or at least 0?
Why does 0.ToString("#.##") return an e<em>mem>pty string? Shouldn't it be 0.00 or at least 0 ?
5 Answers
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Array.Add vs +=
I've found so<em>mem>e interesting behaviour in PowerShell Arrays, na<em>mem>ely, if I declare an array as:
3 Answers
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Understanding Linux /proc/id/<em>mem>aps
I a<em>mem> trying to understand <em>mem>y e<em>mem>bedded Linux application's <em>mem>e<em>mem>ory use. The /proc/pid/<em>mem>aps utility/file see<em>mem>s to be a good resource for seeing the details. Unfortunately I don't understand all the colu<em>mem>ns and entries.
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How to differentiate between ti<em>mem>e to live and ti<em>mem>e to idle in ehcache
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ti<em>mem>eToIdleSeconds enables cached object to be kept in as long as it is requested in periods shorter than ti<em>mem>eToIdleSeconds. ti<em>mem>eToLiveSeconds will <em>mem>ake the cached object be invalidated after that <em>mem>any seconds regardless of how ...
How to keep/exclude a particular package path when using proguard?
I want to exclude so<em>mem>e file paths fro<em>mem> ProGuard. Exa<em>mem>ple co<em>mem>.<em>mem>yapp.custo<em>mem>co<em>mem>ponents
4 Answers
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Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails
I want <em>mem>y urls to use dash - instead of underscore _ as word separators. For exa<em>mem>ple controller/<em>mem>y-action instead of controller/<em>mem>y_action .
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Ruby, Difference between exec, syste<em>mem> and %x() or Backticks
What is the difference between the following Ruby <em>mem>ethods?
3 Answers
3
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What is the full path to the Packages folder for Subli<em>mem>e text 2 on <em>Mem>ac OS Lion
I'<em>mem> not seeing this question anywhere so I can only assu<em>mem>e I'<em>mem> doing so<em>mem>ething really stupid but...
5 Answers
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How can I rotate an HT<em>Mem>L 90 degrees?
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You need CSS to achieve this, e.g.:
#container_2 {
-webkit-transfor<em>mem>: rotate(90deg);
-<em>mem>oz-transfor<em>mem>: rotate(90deg);
-o-transfor<em>mem>: rotate(90deg);
-<em>mem>s-transfor<em>mem>: rotate(90deg);
transfor<em>mem>: rotate(90deg);
}
De<em>mem>o:
#container_2 {
width: 100px;
height: 100px;
border...