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javascript - How to show the "Are you sure you want to navigate away from this page?" when changes committed?

Here in stackoverflow, if you started to make changes then you attempt to navigate away from the page, a javascript ... > </html> Can anyone post an example? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - How to use wait and notify in Java without IllegalMonitorStateException?

I have 2 matrices and I need to multiply them and then print the results of each cell. As soon as one cell ... this code to work I will really appreciate it. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - How to do the Recursive SELECT query in MySQL?

I got a following table: col1 | col2 | col3 -----+------+------- 1 | a | 5 5 | d | 3 3 | k | 7 6 | o ... o | 2 2 | 0 | 8 How to build a SELECT query to do that? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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.net - In C#, why can't a List<string> object be stored in a List<object> variable

It seems that a List object cannot be stored in a List variable in C#, and can't even be explicitly cast ... a time, but it is a rather convoluted solution. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How does exec work with locals?

I thought this would print 3, but it prints 1: def f(): a = 1 exec("a = 3") print(a) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Is floating point arbitrary precision available?

Just for fun and because it was really easy, I've written a short program to generate Grafting numbers, but because ... to move to C and use GMP or something? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - JS li tag onclick not working on IE8

Am using Below JS,but li onclick is not working on IE8 browser. jsfiddle link : http://jsfiddle.net/sudheera ... ; changeLocation(_anchor); } }); please suggest Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How can I generate random alphanumeric strings?

How can I generate a random 8 character alphanumeric string in C#? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Most efficient way to concatenate strings?

What's the most efficient way to concatenate strings? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Simple regular expression for a decimal with a precision of 2

What is the regular expression for a decimal with a precision of 2? Valid examples: 123.12 2 56754 ... optional, and integers may also be included. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What installation product to use? InstallShield, WiX, Wise, Advanced Installer, etc

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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100 views

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How can I trigger a JavaScript event click

I have a hyperlink in my page. I am trying to automate a number of clicks on the hyperlink for ... looking for onClick event trigger from the JavaScript. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Nullable types and the ternary operator: why is `? 10 : null` forbidden?

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Whats the best way to update an object in an array in ReactJS?

If you have an array as part of your state, and that array contains objects, whats an easy way to update ... this this.setState({data: updatedComments}); } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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484 views

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http - Escaping ampersand in URL

I am trying to send a GET message that contains strings with ampersands and can't figure how to escape the ampersand ... use any libraries. How can it be done? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to remove duplicate values from an array in PHP

How can I remove duplicate values from an array in PHP? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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295 views

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excel - How can I find last row that contains data in a specific column?

How can I find the last row that contains data in a specific column and on a specific sheet? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

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tsql - Retrieving last record in each group from database - SQL Server 2005/2008

I have done some seaching by can't seem to get the results I am looking for. Basically we have four different ... located on a SQL Server 2005 server. Thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Download Excel file via AJAX MVC

I have a large(ish) form in MVC. I need to be able to generate an excel file containing data from a subset of that ... I can't get it working with AJAX in mvc. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

1 answer

Linear Regression and group by in R

I want to do a linear regression in R using the lm() function. My data is an annual time series with one field for ... by'. What's the R way of doing this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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256 views

1 answer

reflection - How do I programmatically compile and instantiate a Java class?

I have the class name stored in a property file. I know that the classes store will implement IDynamicLoad. How do ... I load a Java Class that is not compiled? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Getting hold of the outer class object from the inner class object

I have the following code. I want to get hold of the outer class object using which I created the inner ... outer class object from the inner class object? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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162 views

1 answer

javascript - Cache busting via params

We want to cache bust on production deploys, but not waste a bunch of time off the bat figuring out a ... the param indicates that this is dynamic content? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Finding length of array inside a function

This question already has answers here: Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How do I pass command line arguments to a Node.js program?

I have a web server written in Node.js and I would like to launch with a specific folder. I'm not sure how ... was not able to find this information on the web. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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objective c - NSString property: copy or retain?

Let's say I have a class called SomeClass with a string property name: @interface SomeClass : NSObject { ... efficient than such a "retain-ed" property? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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96 views

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html - How to add some non-standard font to a website?

Is there a way to add some custom font on a website without using images, Flash or some other graphics? For ... HTML? Is this possible to do without graphics? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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191 views

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java - Difference between Statement and PreparedStatement

The Prepared Statement is a slightly more powerful version of a Statement, and should always be at least ... any other advantage of using Prepared Statement?" Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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