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How do I declare a 2d array in C++ using new?
...tiguous block is the way to go (less impact on allocator, better locality, etc). But you don't have to sacrifice clean subscripting. See stackoverflow.com/a/29375830/103167
– Ben Voigt
Mar 31 '15 at 19:43
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Inheritance and Overriding __init__ in python
...wing:
We can directly subclass built-in classes, like dict, list, tuple, etc.
The super function handles tracking down this class's superclasses and calling functions in them appropriately.
share
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Downloading all maven dependencies to a directory NOT in repository?
... @ses A standard maven build (e.g. compile, test, package, install, etc.; not sure about validate) already copies all dependencies to your local repo by default. This is not for that. Instead it's for situations where you need your app's dependencies for whatever reason. I'm using it right no...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...hat your lock isn't automatically released on kill -9, reboot, power loss, etc.
– Charles Duffy
May 26 '17 at 14:50
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What's the difference between hard and soft floating point numbers?
...s in integer registers. You can still compile your code with a -mfpu=vfp, etc but you should use -mfloat-abi=softfp so that if the libc needs a float it is passed in a way the library understands.
The Linux kernel can support emulation of the VFP instructions. Obviously, you are better off to com...
Push Notifications in Android Platform
...s not SMS but data driven, almost immediate message delivery, not polling, etc.)
I have a blog post with background information on this in case it's helpful
http://dalelane.co.uk/blog/?p=938
(Note: MQTT is an IBM technology, and I should point out that I work for IBM.)
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Git: How to remove file from historical commit?
...ociated with them. This means that stuff like signed commits, commit notes etc. are preserved
filter-branch keeps backups too, so the size of the repo won't decrease immediately unless you expire the reflogs and garbage collect:
rm -Rf .git/refs/original # careful
git gc --aggressive --prun...
CSS selector for a checked radio button's label
...;/label>
... and it will work for any structure, with or without divs etc as long as the label follows the radio input.
Example:
input[type="radio"]:checked+label { font-weight: bold; }
<input id="rad1" type="radio" name="rad"/><label for="rad1">Radio 1</label>
<inp...
Android: upgrading DB version and adding new table
... //alter existing tables(add column, add/remove constraint)
//etc.
}
}
Using Migration classes
onCreate: Since onCreate will be called when application freshly installed, we also need to execute all migrations(database version updates). So onCreate will looks like this:
pu...
General suggestions for debugging in R
...nce errors often occur with unstable/wonky data sets (complete separation, etc.), and the window between 'converges just fine' and 'non-convergent but can't be fixed by increasing number of iterations -- needs some more drastic change' is often narrow
– Ben Bolker
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