Make jQuery throw error when it doesn't match an element解答1You could make a plugin to use to ensure that the jQuery object is not empty:$.fn.ensure = function() { if (this.length === 0) throw "Empt...
120down voteacceptedI would say, it depends on kind of dev team you are and your application needs.For example if there are more querying required, it mostly means more work in R...
Let's see following code:
println(colors.reduce {
acc, curr -> "$acc, $curr"
}) // red, blue, green, black
val myMap = mapOf(1 to "one", 2 to "two", 3 to "three")
myMap.f...
SELECT mechanism.organizeName, sum(case when storageVehicles_status=1 then 1 else 0 end )as storageVehiclesSum, sum(case when storageVehicles_status=2 then 1 else 0 end )as outbou...
SELECT mechanism.organizeName,sum(case when storageVehicles_status=1 then 1 else 0 end )as storageVehiclesSum,sum(case when storageVehicles_status=2 then 1 else 0 end )as outboundVehicleSum,sum(case w...
https://stackoverflow.com/questions/22156664/what-does-the-dot-after-dollar-sign-mean-in-jquery-when-declaring-variables
I see variables declared as:
$.root = $("body");
and
$root = $("body");
What ...
CASE WHEN case when x = y then a else b endcase when x < y then a when x = y then b else c endcase XYZ when 'foo' then 'moo' else 'bar' endThe following little SQL script d...
Case具有两种格式。简单Case函数和Case搜索函数。简单Case函数CASE sexWHEN '1' THEN '男'WHEN '2' THEN '女'ELSE '其他' END --Case搜索函数
CASE WHEN sex = '1' THEN '男'
WHEN sex = '2' THEN ...
Case具有两种格式。简单Case函数和Case搜索函数。简单Case函数CASE sexWHEN '1' THEN '男'WHEN '2' THEN '女'ELSE '其他' END --Case搜索函数
CASE WHEN sex = '1' THEN '男'
WHEN sex = '2' THEN ...
