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Get the index of the object inside an array, matching a condition
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As of 2016, you're supposed to use Array.findIndex (an ES2015/ES6 standard) for this:
a = [
{prop1:"abc",prop2:"qwe"},
{prop1:"bnmb",prop2:"yutu"},
{prop1:"zxvz",prop2:"qwrq"}];
index = a.findIndex(x => x.prop2 ==="yutu");
console.log(index);
It's supported i...
How to check if mysql database exists
... OK, apparently PHPMyAdmin just displays all database names in lower case, and your query works using both anyway
– Hubro
Jun 15 '12 at 13:21
1
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Is there a command for formatting HTML in the Atom editor?
I would like to format my HTML with a command, as I do in Visual Studio, using Ctrl + K + D . Is this possible in Atom ? If not, are there other options?
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How can I build XML in C#?
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It depends on the scenario. XmlSerializer is certainly one way and has the advantage of mapping directly to an object model. In .NET 3.5, XDocument, etc. are also very friendly. If the size is very large, then XmlWriter is your friend.
For an XDocument example:
Console.WriteLine(
n...
How to get IP address of the device from code?
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This is my helper util to read IP and MAC addresses. Implementation is pure-java, but I have a comment block in getMACAddress() which could read the value from the special Linux(Android) file. I've run this code only on few devices and Emulator but let me kno...
Django - filtering on foreign key properties
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This has been possible since the queryset-refactor branch landed pre-1.0. Ticket 4088 exposed the problem. This should work:
Asset.objects.filter(
desc__contains=filter,
project__name__contains="Foo").order_by("desc")
The Django Many-to-one documentation has this and oth...
Require returns an empty object
I have a folder, that has index.js and a couple of models (classes)
index.js
1 Answer
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How to change package name of Android Project in Eclipse?
I have an Android project created in Eclipse . I want to modify the package name and application of the project. How do I do that in Eclipse?
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Selecting only numeric columns from a data frame
...list-apply functions:
nums <- unlist(lapply(x, is.numeric))
Then standard subsetting
x[ , nums]
## don't use sapply, even though it's less code
## nums <- sapply(x, is.numeric)
For a more idiomatic modern R I'd now recommend
x[ , purrr::map_lgl(x, is.numeric)]
Less codey, less ref...
Rebase feature branch onto another feature branch
... the branch is not fully merged. I assume I can safely ignore this message and force the delete?
– Arjen
Feb 15 '13 at 11:28
13
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