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Align image in center and middle within div

I have following div 33 Answers 33 ...
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How to solve PHP error 'Notice: Array to string conversion in…'

I have a PHP file that tries to echo a $_POST and I get an error, here is the code: 5 Answers ...
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Install parent POM without building Child modules

... editor after snippets, if snippets enabled if (StackExchange.settings.snippets.snippetsEnabled) { StackExchange.using("snippets", function() { createEditor(); }); } else { createEditor(); ...
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Disabling and enabling a html input button

... Since you are disabling it in the first place, the way to enable it is to set its disabled property as false. To change its disabled property in Javascript, you use this: var btn = document.getElementById("Button"); btn.disabled = false; And obviously to disable it again, you'd use true instead...
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What is the idiomatic Go equivalent of C's ternary operator?

In C/C++ (and many languages of that family), a common idiom to declare and initialize a variable depending on a condition uses the ternary conditional operator : ...
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Pad a string with leading zeros so it's 3 characters long in SQL Server 2008

I have a string that is up to 3 characters long when it's first created in SQL Server 2008 R2. 17 Answers ...
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Why must we define both == and != in C#?

...= 0 member this.Prop with get () = myInternalValue and set (value) = myInternalValue <- value static member op_Equality (left : Foo, right : Foo) = left.Prop = right.Prop //static member op_Inequality (left : Foo, right : Foo) = left.Prop <> right.Prop This do...
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How to change Git log date formats

...dable format, such as when using "--pretty". log.date config variable sets a default value for log command’s --date option. --date=relative shows dates relative to the current time, e.g. "2 hours ago". --date=local shows timestamps in user’s local timezone. --date=iso (or --date=iso8601)...
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Why should hash functions use a prime number modulus?

A long time ago, I bought a data structures book off the bargain table for $1.25. In it, the explanation for a hashing function said that it should ultimately mod by a prime number because of "the nature of math". ...
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CSS background opacity with rgba not working in IE 8

I am using this CSS for background opacity of a <div> : 15 Answers 15 ...