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How do you fix a bad merge, and replay your good commits onto a fixed merge?
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I did this but a new commit was reapplied on top of the amended one, with the same message. Apparently git did a 3 way merge between the old, unamended commit containing the unwanted file, and the fixed commit from the other branch, and so it created a new commit...
What's the difference between utf8_general_ci and utf8_unicode_ci?
...s accurately in a wide range of languages.
utf8mb4_general_ci is a simplified set of sorting rules which aims to do as well as it can while taking many short-cuts designed to improve speed. It does not follow the Unicode rules and will result in undesirable sorting or comparison in some situations...
Single Page Application: advantages and disadvantages [closed]
...l every time you open a mail a special hash tag is added to the URL. If copied and pasted to other browser window can open the exact same mail (provided they can authenticate). This approach maps directly to a more traditional query string, the difference is merely in the execution. With HTML5 push...
How do I tell git to always select my local version for conflicted merges on a specific file?
... not speaking of a "config" file, since it is a bad example), you would achieve that with a custom script called through merges.
Git will call that script because you will have define a gitattributes value, which defines a custom merge driver.
The "custom merge driver" is, in this case, a very simp...
How to modify a global variable within a function in bash?
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When you use a command substitution (ie the $(...) construct), you are creating a subshell. Subshells inherit variables from their parent shells, but this only works one way - a subshell cannot modify the environment of its parent shell. Your variable e is set w...
How do I uniquely identify computers visiting my web site?
...sits the web site I am creating. Does anybody have any advice on how to achieve this?
21 Answers
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Algorithm to compare two images
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These are simply ideas I've had thinking about the problem, never tried it but I like thinking about problems like this!
Before you begin
Consider normalising the pictures, if one is a higher resolution than the other, consider the option that one of them is a compressed version of the othe...
Is it possible to cache POST methods in HTTP?
...nless the response
includes appropriate Cache-Control or Expires header fields. However,
the 303 (See Other) response can be used to direct the user agent to
retrieve a cacheable resource.
Note that the same RFC states explicitly in section 13 (Caching in HTTP) that a cache must invalidate ...
List of Big-O for PHP functions
...a benchmark or code-skimming to characterize the array_* functions. I've tried to put the more interesting Big-O near the top. This list is not complete.
Note: All the Big-O where calculated assuming a hash lookup is O(1) even though it's really O(n). The coefficient of the n is so low, the ram ove...
What's the difference between equal?, eql?, ===, and ==?
... will add my own compact answer:
==, ===, eql?, equal?
are 4 comparators, ie. 4 ways to compare 2 objects, in Ruby.
As, in Ruby, all comparators (and most operators) are actually method-calls, you can change, overwrite, and define the semantics of these comparing methods yourself. However, it is im...