大约有 30,000 项符合查询结果（耗时：0.0400秒） [XML]
What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...
Technically, the first raises a RuntimeError with the message set to "foo", and the second raises an Exception with the message set to "foo".
Practically, there is a significant difference between when you would want to use the former and when you want to use the...
jQuery Validate - require at least one field in a group to be filled
...te div instead of after all every field.
put in form validate script
showErrors: function(errorMap, errorList){
$("#form_error").html("Please fill out at least 1 field before submitting.");
this.defaultShowErrors();
},
add this somewhere in the page
<div class...
how to edit .csproj file
... my .csproj file using .NET framework 4.0 MSBUILD.EXE file I am getting an error "lable01" not found in the current context of "website01.csproj"
...
How to convert int to char with leading zeros?
... |
edited Sep 25 '12 at 5:05
community wiki
2 r...
MongoDB drop every database
...le.
– Vivek Pandey
May 19 '15 at 14:05
2
This droped my system databases (Mongo Version 2.4.3). I...
Getting “Lock wait timeout exceeded; try restarting transaction” even though I'm not using a transac
...ime, so you have to wait some process to be idle. If so you could get this error. Am I right?
– zhuguowei
Aug 4 '16 at 9:36
6
...
using gitlab token to clone without authentication
...
answered Apr 10 '15 at 21:05
Roshan GautamRoshan Gautam
2,30011 gold badge99 silver badges1111 bronze badges
...
What is an optional value in Swift?
...can be nil
If you try to set a non-optional variable to nil, you'll get an error.
var red: String = "Red"
red = nil // error: nil cannot be assigned to type 'String'
Another way of looking at optionals is as a complement to normal Swift variables. They are a counterpart to a variable which is guara...
Count number of records returned by group by
...´s answer
– Bjinse
Dec 13 '12 at 8:05
How would I echo that counted number?
– McDan Garrett
...
Error :Request header field Content-Type is not allowed by Access-Control-Allow-Headers
...
As hinted at by this post Error in chrome: Content-Type is not allowed by Access-Control-Allow-Headers just add the additional header to your web.config like so...
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow...