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What are commit-ish and tree-ish in Git?

...-------------------------------------------------- Identifiers #1-14 are all "commit-ish", because they all lead to commits, but because commits also point to directory trees, they all ultimately lead to (sub)directory tree objects, and can therefore also be used as "tree-ish". #15 can also be us...
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Can't install nuget package because of “Failed to initialize the PowerShell host”

All of a sudden, I am getting this error when upgrading Nuget packages. None of the fixes that I have come across work. I am using Visual Studio 2013. ...
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Am I immoral for using a variable name that differs from its type only by case?

... What is the reasoning of those telling you this is bad? I do this all the time. It is the simplest, expressive way to name a single variable of a type. If you needed two Person objects then you could prefix person with meaningful adjectives like fastPerson slowPerson otherwise just pe...
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How to test valid UUID/GUID?

...9a-f]{3}-[089ab][0-9a-f]{3}-[0-9a-f]{12}$/i ...ensures you have a canonically formatted UUID that is Version 1 through 5 and is the appropriate Variant as per RFC4122. NOTE: Braces { and } are not canonical. They are an artifact of some systems and usages. Easy to modify the above regex to meet ...
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JS: iterating over result of getElementsByClassName using Array.forEach

...on (in modern browsers, at least. Older browsers returned a NodeList). In all modern browsers (pretty much anything other IE <= 8), you can call Array's forEach method, passing it the list of elements (be it HTMLCollection or NodeList) as the this value: var els = document.getElementsByClassNam...
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Pass a JavaScript function as parameter

... executing it first. Here is an example: function addContact(id, refreshCallback) { refreshCallback(); // You can also pass arguments if you need to // refreshCallback(id); } function refreshContactList() { alert('Hello World'); } addContact(1, refreshContactList); ...
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Why is exception.printStackTrace() considered bad practice?

...archiving the existing contents of the file/device. or the file/device actually discards all data written to it, as is the case of /dev/null. Inferring from the above, invoking Throwable.printStackTrace() constitutes valid (not good/great) exception handling behavior, only if you do not have Sy...
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How to echo shell commands as they are executed

In a shell script, how do I echo all shell commands called and expand any variable names? 13 Answers ...
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Find when a file was deleted in Git

... forgot the whole name of the file =( maybe it is possible to get a log of all deletions? – wutzebaer Jun 27 '14 at 8:15 ...
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How to send a stacktrace to log4j?

... I never know what to stuff into the first String, usually I just end up doing log.error(e.getLocalizedMessage(), e) which is totally redundant. Does it handle a null for the first argument? – Mark Peters Dec 3 '10 at 16:52 ...