大约有 40,000 项符合查询结果（耗时：0.0523秒） [XML]
Changing every value in a hash in Ruby
...:
# Two ways to achieve the same result (any Ruby version)
my_hash.each{ |key,str| my_hash[key] = "%#{str}%" }
my_hash.inject(my_hash){ |h,(k,str)| h[k]="%#{str}%"; h }
If you want a new hash:
# Ruby 1.8.6+
new_hash = Hash[*my_hash.map{|k,str| [k,"%#{str}%"] }.flatten]
# Ruby 1.8.7+
new_hash = ...
What is the difference between required and ng-required?
...
AngularJS form elements look for the required attribute to perform validation functions. ng-required allows you to set the required attribute depending on a boolean test (for instance, only require field B - say, a student number - if the field A has a...
How to use wait and notify in Java without IllegalMonitorStateException?
... [2][0] is ready first. So I need to print it by order.
So my idea is to make the printer thread wait until the multiplyThread notifies it that the correct cell is ready to be printed and then the printerThread will print the cell and go back to waiting and so on..
...
How to get current formatted date dd/mm/yyyy in Javascript and append it to an input [duplicate]
I would like to add a current date to a hidden HTML tag so that it can be sent to the server:
7 Answers
...
jQuery selectors on custom data attributes using HTML5
I would like to know what selectors are available for these data attributes that come with HTML5.
4 Answers
...
javascript set a variable if undefined
I know that I can test for a javascript variable and then define it if it is undefined, but is there not some way of saying
...
Change Active Menu Item on Page Scroll?
...one by binding to the scroll event of the container (usually window).
Quick example:
// Cache selectors
var topMenu = $("#top-menu"),
topMenuHeight = topMenu.outerHeight()+15,
// All list items
menuItems = topMenu.find("a"),
// Anchors corresponding to menu items
scrollItems = ...
MySQL - Get row number on select
...
Take a look at this.
Change your query to:
SET @rank=0;
SELECT @rank:=@rank+1 AS rank, itemID, COUNT(*) as ordercount
FROM orders
GROUP BY itemID
ORDER BY ordercount DESC;
SELECT @rank;
The last select is your count.
...
Shell script “for” loop syntax
I have gotten the following to work:
11 Answers
11
...
Run Command Prompt Commands
...IT: 2
Important is that the argument begins with /C otherwise it won't work. How Scott Ferguson said: it "Carries out the command specified by the string and then terminates."
share
|
improve this ...