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How to apply multiple styles in WPF

...post here WPF and Silverlight both offer the ability to derive a Style from another Style through the “BasedOn” property. This feature enables developers to organize their styles using a hierarchy similar to class inheritance. Consider the following styles: <Style TargetType="Button" x:K...
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Converting a Java Keystore into PEM Format

I am trying to convert from a Java keystore file into a PEM file using keytool and openssl applicactions. But I could not find a good way to do the conversion. Any ideas? ...
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What part of Hindley-Milner do you not understand?

...ype τ, proves that e has type τ'. As requested: operator precedence, from highest to lowest: Language-specific infix and mixfix operators, such as λ x . e, ∀ α . σ, and τ → τ', let x = e0 in e1, and whitespace for function application. : ∈ and ∉ , (left-associative) ⊢ whitespa...
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How to delete all data from solr and hbase

How do I delete all data from solr by command? We are using solr with lily and hbase . 18 Answers ...
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How to compare two colors for similarity/difference

...b of telling you how different they will be PERCEIVED. Human eyes are far from perfect: we're more sensitive to green than red or blue, our brightness perception is logrithmic, etc. OP never specified which s/he wants; but see here for an algorithm specially-tailored for human sight. ...
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What is the difference between JSON and Object Literal Notation?

...ny syntax for functions). But most importantly, to repeat my explanation from the beginning: You are in a JavaScript context. You define a JavaScript object. If any, a "JSON object" can only be contained in a string: var obj = {foo: 42}; // creates a JavaScript object (this is *not* JSON) var j...
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How can I get the domain name of my site within a Django template?

How do I get the domain name of my current site from within a Django template? I've tried looking in the tag and filters but nothing there. ...
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How to remove all null elements from a ArrayList or String Array?

...use of brevity, but because it's more expressive. You can almost read it: "From tourists, remove if object is null". Also, the old way is creating a new collection with a single null object, and then asking to remove the contents of a collection from the other. Seems a bit of a hack, don't you think...
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Can I export a variable to the environment from a bash script without sourcing it?

... variable: . ./export.bash or source ./export.bash Now when echoing from main shell it works echo $VAR HELLO, VARABLE We will now reset VAR export VAR="" echo $VAR Now we will execute a script to source the variable then unset it : ./test-export.sh HELLO, VARABLE -- . the code: cat...
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Bash: infinite sleep (infinite blocking)

... documented in a separate answer. To summarize: infinity is converted in C from "string" to a double. Then that double is truncated to the maximum values allowed timespec, which means a very large amount of seconds (architecture-dependant) but, in theory, finite. – jp48 ...