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How to extract a substring using regex
... modifier, so that for this 'is' my 'data' with quotes it would stop early and return is instead of matching as many characters as possible and return is' my 'data, which is the default behavior.
– Timekiller
Sep 12 '16 at 14:08
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Using Regular Expressions to Extract a Value in Java
...blic static void main(String[] args) {
// create matcher for pattern p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.prin...
Count number of objects in list [closed]
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length(x)
Get or set the length of vectors (including lists) and factors, and of any other R object for which a method has been defined.
lengths(x)
Get the length of each element of a list or atomic vector (is.atomic) as an integer or numeric vector.
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How to list containers in Docker
There's a command to list images, docker images , but there doesn't seem to be a corresponding docker containers .
14 Ans...
What's the best practice for primary keys in tables?
...signing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
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What is the difference between List (of T) and Collection(of T)?
I've seen them used in a lot of the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
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Why am I seeing “TypeError: string indices must be integers”?
I'm playing with both learning python and trying to get github issues into a readable form. Using the advice on How can I convert JSON to CSV? I came up with this:
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np.mean() vs np.average() in Python NumPy?
...just offer np.average since weights is already optional. Seems unnecessary and only serves to confuse users.
– Geoff
Nov 30 '15 at 22:03
7
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What happened to console.log in IE8?
...available after you have opened the Developer Tools (F12 to toggle it open and closed).
Funny thing is that after you've opened it, you can close it, then still post to it via console.log calls, and those will be seen when you reopen it.
I'm thinking that is a bug of sorts, and may be fixed, but we ...
Scala Programming for Android
I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of mem...