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Cannot create an array of LinkedLists in Java…?
...e the row map type a TreeMap, and same for traversing the columns in index order, but if you don't need those cases, HashMap is quicker than TreeMap. Helper methods to get and set an arbitrary cell, handling unset null values, would be useful, of course.
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Most efficient way to reverse a numpy array
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In order to have it working with negative numbers and a long list you can do the following:
b = numpy.flipud(numpy.array(a.split(),float))
Where flipud is for 1d arra
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Xcode suddenly stopped running project on hardware: “Could not launch xxx.app: .. No such file..” [c
...tried some of the above with info.plists and deleting derived data, clean, etc.
My solution: quit XCode, reopen project. Go to derived data in Finder. Deleted data for all projects (was all trashable, but I would try deleting your troubled projectdata first). And then it worked again. Deleting deri...
Git command to show which specific files are ignored by .gitignore
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As mentioned in the ls-files man page, --others is the important part, in order to show you non-cached, non-committed, normally-ignored files.
--exclude_standard is not just a shortcut, but a way to include all standard "ignored patterns" settings.
exclude-standard
Add the standard git excl...
How do I replace a character at a particular index in JavaScript?
...T1: 195ms
TEST2: 6ms
It seems that array conversion beats substring by 2 orders of magnitude! So - what the hell happened here???
What actually happens is that all operations in TEST2 are done on array itself, using assignment expression like strarr2[p] = n. Assignment is really fast compared to ...
Defining a variable with or without export
... process. You would use this for (say) loop variables, temporary variables etc.
It's important to note that exporting a variable doesn't make it available to parent processes. That is, specifying and exporting a variable in a spawned process doesn't make it available in the process that launched it...
What is the difference between README and README.md in GitHub projects?
... see at the bottom of projects. Github has their own flavor of Markdown.
Order of Preference: If you have two files named README and README.md, the file named README.md is preferred, and it will be used to generate github's html summary.
FWIW, Stack Overflow uses local Markdown modifications as...
Cloning a MySQL database on the same MySql instance
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How can we also copy functions, events etc. created in the original database? This looks only copies tables.
– Dogan Askan
Apr 9 '18 at 23:20
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invalid_grant trying to get oAuth token from google
...st users but for some users I still get invalid_grant, invalid_credentials etc. for no particular reasons.
– Allen King
Dec 29 '15 at 19:32
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Disable/enable an input with jQuery?
... to disable ALL form input controls - incl. checkboxes, radios, textareas, etc. - you have to select ':input', not just 'input'. The latter selects only actual <input> elements.
– Cornel Masson
Aug 16 '12 at 8:10
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