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How do I check if a number evaluates to infinity?
... answered Jan 18 '11 at 13:27
LukeHLukeH
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Why do we usually use || over |? What is the difference?
...l OR || between two booleans not bitwise OR | , though they are both working well.
28 Answers
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How to center a button within a div?
... answered Sep 26 '11 at 20:23
LoktarLoktar
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Remove duplicate elements from array in Ruby
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the Tin Man
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answered Dec 3 '11 at 5:24
Mithun Sasidhara...
optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?
I've been a bad kid and used the following syntax in my partial templates to set default values for local variables if a value wasn't explicitly defined in the :locals hash when rendering the partial --
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How to replace strings containing slashes with sed?
...imiter that's not part of either string. Or, you could escape it with a backslash:
s/\//foo/
Which would replace / with foo. You'd want to use the escaped backslash in cases where you don't know what characters might occur in the replacement strings (if they are shell variables, for example).
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When to use a key/value store such as Redis instead/along side of a SQL database?
I have read great things about key/value stores such as Redis but I can't seem to figure out when it's time to use it in an application.
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Deep copying an NSArray
...if you need to deeply copy an entire nested data structure — what the linked Apple docs call a true deep copy — then this approach will not suffice. Please see the other answers here for that.
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Debugging “Element is not clickable at point” error
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This is caused by following 3 types:
1.The element is not visible to click.
Use Actions or JavascriptExecutor for making it to click.
By Actions:
WebElement element = driver.findElement(By("element_path"));
Actions actions = new Actions(driver);
actions.moveToElement(element).click().perform(...
AWS MySQL RDS vs AWS DynamoDB [closed]
...u can read AWS explanation about it here.
In short, if you have mainly Lookup queries (and not Join queries), DynamoDB (and other NoSQL DB) is better. If you need to handle a lot of data, you will be limited when using MySQL (and other RDBMS).
You can't reuse your MySQL queries nor your data sche...