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MongoDB: Is it possible to make a case-insensitive query?
...a cost every time you find it. Obviously this wont work for people's names and such, but maybe use-cases like tags.
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Insert picture into Excel cell [closed]
...aded (grey area) on outside of comment box > Format Comment > Colors and Lines > Fill > Color > Fill Effects > Picture > (Browse to picture) > Click OK
Image will appear on hover over.
Microsoft Office 365 (2019) introduced new things called comments and renamed the old co...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...设备 ASG 425 支持OSPF BGP PIM路由协议
第二台设备SSG 520
支持BGP OSPF PIM RIP 路由协议
第一种方法
说明：两个防火墙属于不同品牌HA 等技术想都不用想了，想通过VRRP实现主备切换， juniper 我只发现了NSRP 的选项 Astarto 根本...
nodeJs callbacks simple example
...have already searched for the same on many websites but not able to understand it properly, Please give me a simple example.
...
How to find the type of an object in Go?
... following snippet will print out the reflection type of a string, integer and float.
package main
import (
"fmt"
"reflect"
)
func main() {
tst := "string"
tst2 := 10
tst3 := 1.2
fmt.Println(reflect.TypeOf(tst))
fmt.Println(reflect.TypeOf(tst2))
fmt.Println(refle...
What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...ody provide some examples to know the difference in terms of functionality and performance?
6 Answers
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How can I get the button that caused the submit from the form submit event?
...hat this element was clicked:", $btn);
/* access $btn.attr("name") and $btn.val() for data */
}
});
I take advantage of the fact, that the button is always the focused element after clicking it. This will not work, if you do a blur() right after the click.
@Doin has spotted another dr...
How to make a phone call using intent in Android?
I'm using the following code to make a call in Android but it is giving me security exception please help.
20 Answers
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How to change a nullable column to not nullable in a Rails migration?
I created a date column in a previous migration and set it to be nullable. Now I want to change it to be not nullable. How do I go about doing this assuming there are null rows in that database? I'm ok with setting those columns to Time.now if they're currently null.
...
What is the (function() { } )() construct in JavaScript?
...es immediately after it’s created.
It has nothing to do with any event-handler for any events (such as document.onload).
Consider the part within the first pair of parentheses: (function(){})();....it is a regular function expression. Then look at the last pair (function(){})();, this is normally...