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mysql - how many columns is too many?
I'm setting up a table that might have upwards of 70 columns. I'm now thinking about splitting it up as some of the data in the columns won't be needed every time the table is accessed. Then again, if I do this I'm left with having to use joins.
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How to: Define theme (style) item for custom widget
...ble.CustomImageButton_customAttr, "" );
array.recycle();
}
}
Now you have to apply Theme.Custom to all activities that use CustomImageButton (in AndroidManifest.xml):
<activity android:name=".MyActivity" android:theme="@style/Theme.Custom"/>
That's all. Now CustomImageButton t...
Allow CORS REST request to a Express/Node.js application on Heroku
...at works for requests from the js console in Chrome, and URL bar, etc. I'm now trying to get it working for requests from another app, on a different domain (CORS).
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Identifying the dependency relationship for python packages installed with pip
...:|Requires:)' | sed s/Name:/\\\nName:/ -- but it seems that pipdeptree is now a better solution.
– Mark Chackerian
Aug 3 '17 at 15:26
add a comment
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brew update: The following untracked working tree files would be overwritten by merge:
...ntually run brew doctor again to ensure yourself that the warning is gone.
Now, you should have a
Warning: You have uncommitted modifications to Homebrew
that may bey solved by
cd /usr/local/Library && git stash && git clean -d -f
as suggested by Dr.Brew itself. The command sta...
Why wasn't PyPy included in standard Python?
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It is worth noting that PyPy now comes with an incremental GC, and is potentially more suitable for games as a consequence.
– porgarmingduod
Oct 23 '13 at 11:55
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Convert List to List
... covariant conversions on interfaces and delegates when the conversion is known to be always safe. See my blog articles on covariance and contravariance for details. (There will be a fresh one on this topic on both Monday and Thursday of this week.)
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Execute and get the output of a shell command in node.js
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Thats the way I do it in a project I am working now.
var exec = require('child_process').exec;
function execute(command, callback){
exec(command, function(error, stdout, stderr){ callback(stdout); });
};
Example: Retrieving git user
module.exports.getGitUser = func...
Assign multiple columns using := in data.table, by group
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This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, b = 1:6)
f <- function(x) {list("hi", "hello")}
x[ , c("col1", "col2") := f(), by = a][]
# a b col1 col2
# 1: 1 1 hi hello
# ...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
...T projects is again AnyCPU, but there is more than
one meaning to AnyCPU now. There is an additional sub-type of AnyCPU,
“Any CPU 32-bit preferred”, which is the new default (overall, there
are now five options for the /platform C# compiler switch: x86,
Itanium, x64, anycpu, and anycpu32...