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Test if a vector contains a given element
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I will group the options based on output. Assume the following vector for all the examples.
v <- c('z', 'a','b','a','e')
For checking presence:
%in%
> 'a' %in% v
[1] TRUE
any()
> any('a'==v)
[1] TRUE
is.element()
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In which language are the Java compiler and JVM written?
... not C.
Take a look at the HotSpot JVM code here: http://openjdk.java.net/groups/hotspot/
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How to delete a certain row from mysql table with same column values?
...BLE `orders` TO `orders2`;
CREATE TABLE `orders`
SELECT * FROM `orders2` GROUP BY id_users, id_product;
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Auto-indent in Notepad++
...ISC (tab)
lower-left checkbox list
"Auto-indent" is the 2nd option in this group
[EDIT] Though, I don't think it's had the best implementation of Auto-indent. So, check to make sure you have version 5.1 -- auto-indent got an overhaul recently, so it auto-corrects your indenting.
Do also note th...
What's the best Django search app? [closed]
...nd that django-sphinx was a nice wrapper on top of the sphinx client.
The group by aggregation is particularly nice, if for example you want to display how many documents with a certain tag or by a certain author (or both) matched a search. In memory attribute updates were convenient too, especial...
What is the reason for a red exclamation mark next to my project in Eclipse?
...n be seen in the Problems view, and if you open
the view menu and select Group By > Java Problem Type, they all show
up in the Build Path category:
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Is the primary key automatically indexed in MySQL?
...'re telling people to make sure that any other columns used for filtering, grouping or sorting also have indices.
– Emil H
Mar 12 '13 at 23:31
15
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How can we generate getters and setters in Visual Studio?
...vate field, which bugs me, because I usually have all of my private fields grouped together, and this Visual Studio feature breaks my class' formatting.
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how to check if a form is valid programmatically using jQuery Validation Plugin
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For a group of inputs you can use an improved version based in @mikemaccana's answer
$.fn.isValid = function(){
var validate = true;
this.each(function(){
if(this.checkValidity()==false){
validate = fal...
How to check if an element does NOT have a specific class?
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Select element (or group of elements) having class "abc", not having class "xyz":
$('.abc:not(".xyz")')
When selecting regular CSS you can use .abc:not(.xyz).
sh...