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When to use ko.utils.unwrapObservable?
I've written a few custom bindings using KnockoutJS. I'm still unsure when to use ko.utils.unwrapObservable(item) Looking at the code, that call basically checks to see if item is an observable. If it is, return the value(), if it's not, just return the value. Looking at the section on Knockout ...
What is the difference between map and flatMap and a good use case for each?
Can someone explain to me the difference between map and flatMap and what is a good use case for each?
16 Answers
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
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The recast function (also from reshape2) integrates the melt and dcast function in one go for tasks like this: recast(df1, year + month ~ variable, sum, id.var = c("date", "year", "month"))
– Jaap
May 13 '16 at 6:17
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How to programmatically create and read WEP/EAP WiFi configurations in Android?
How to programmatically create and read WEP/EAP WiFi configurations in Android?
5 Answers
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Using String Format to show decimal up to 2 places or simple integer
... can be either 100 or 100.99 or 100.9, What I want is to display the price in 2 decimal places only if the decimals are entered for that price , for instance if its 100 so it should only show 100 not 100.00 and if the price is 100.2 it should display 100.20 similarly for 100.22 should be same .
I go...
iOS 5 fixed positioning and virtual keyboard
I have a mobile website which has a div pinned to the bottom of the screen via position:fixed. All works fine in iOS 5 (I'm testing on an iPod Touch) until I'm on a page with a form. When I tap into an input field and the virtual keyboard appears, suddenly the fixed position of my div is lost. The d...
how to get GET and POST variables with JQuery?
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function decode(s) {
return decodeURIComponent(s.split("+").join(" "));
}
$_GET[decode(arguments[1])] = decode(arguments[2]);
});
document.write($_GET["test"]);
For POST parameters, you can serialize the $_POST object in JSON format into a <script> tag:
<script typ...
execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile
I'm getting this error:
18 Answers
18
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How to add NERDTree to your .vimrc
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Okay, the previous version was a bit terse, but the answer you're looking for is to add the line below into your ~/.vimrc file. It tells Vim that you want to setup a command to run when Vim starts, but since it depends on various plugins to be loaded, you don't want to run it until all initial...
How do you use “git --bare init” repository?
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Firstly, just to check, you need to change into the directory you've created before running git init --bare. Also, it's conventional to give bare repositories the extension .git. So you can do
git init --bare test_repo.git
For Git versions < 1.8 you would do
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