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When to use nil, blank, empty? [duplicate]
... and you need to include blank? only, here is how to cherry-pick just this one bit: require 'active_support/core_ext/object/blank (source)
– driftcatcher
Oct 11 '16 at 4:44
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Why did my Git repo enter a detached HEAD state?
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Any checkout of a commit that is not the name of one of your branches will get you a detached HEAD. A SHA1 which represents the tip of a branch still gives a detached HEAD. Only a checkout of a local branch name avoids that mode.
See committing with a detached HEAD
Whe...
Get properties and values from unknown object
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@clone that's a completely different way of doing it. You should post an answer if you think it's a valid approach
– Cocowalla
Jul 22 '17 at 7:31
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Who is “us” and who is “them” according to Git?
... "ours" branch being the upstream branch and the "theirs" branch being the one being rebased. But I agree it's, well, "extremely unhelpful" seems like a polite way to put it. I'd much rather have the branches labeled by some other words than "us/ours" and "them/theirs", perhaps by branch-name for ...
How is Docker different from a virtual machine?
... you can have a read only part and a write part which are merged together. One could have the common parts of the operating system as read only (and shared amongst all of your containers) and then give each container its own mount for writing.
So, let's say you have a 1 GB container image; if you ...
What's the difference between SoftReference and WeakReference in Java?
...renced by a SoftReference if there isn't pressure on the available memory. One detail: the policy for the "-client" and "-server" JRE's are different: the -client JRE tries to keep your footprint small by preferring to clear SoftReferences rather than expand the heap, whereas the -server JRE tries t...
How to Truncate a string in PHP to the word closest to a certain number of characters?
.... It splits the texts in multiple lines such that the maximum width is the one you specified, breaking at word boundaries. After splitting, you simply take the first line:
substr($string, 0, strpos(wordwrap($string, $your_desired_width), "\n"));
One thing this oneliner doesn't handle is the case ...
How does the compilation/linking process work?
...of the syntax of C++, which is why it must be used with care.
It works on one C++ source file at a time by replacing #include directives with the content of the respective files (which is usually just declarations), doing replacement of macros (#define), and selecting different portions of text dep...
CSS3 transition events
...sent at the end of a transition. The event is an instance of WebKitTransitionEvent, and its type is webkitTransitionEnd.
box.addEventListener( 'webkitTransitionEnd',
function( event ) { alert( "Finished transition!" ); }, false );
Mozilla
There is a single event that is fired when trans...
How can I add an item to a SelectList in ASP.net MVC
...a SelectList with the default value of 0 and the Text Value of " -- Select One --"
13 Answers
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