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c - Correct format specifier to print pointer or address?

Which format specifier should I be using to print the address of a variable? I am confused between the below lot ... be the optimum format to print an address? Question&Answers:os...

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

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parsing - Parse query string in JavaScript

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

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352 views

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jquery - $(this) inside of AJAX success not working

I am trying to change some old code which uses onclick so that I an use the $(this). The problem is that $(this) is ... $(this).addClass("test"); } } }); }); Question&Answers:os...

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

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java - "Non-static method cannot be referenced from a static context" error

I have a class named Media which has a method named setLoanItem: public void setLoanItem(String loan) { this ... the same error message but nothing is clicking! Question&Answers:os...

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

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eclipse - How to solve "Plugin execution not covered by lifecycle configuration" for Spring Data Maven Builds

I am trying to work with Spring Data and Neo4j. I started by trying to follow this guide linked to by the ... this update site and still get the same error. Question&Answers:os...

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

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javascript - How to check if a string "StartsWith" another string?

How would I write the equivalent of C#'s String.StartsWith in JavaScript? var haystack = 'hello world'; var ... (2015) browser support is far from complete. Question&Answers:os...

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

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loops - How to iterate over a JavaScript object?

I have an object in JavaScript: { abc: '...', bca: '...', zzz: '...', xxx: '...', ccc: '...', // ... } ... i++) { ... } // last But how to do it with objects? Question&Answers:os...

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

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intellij idea - Android Studio shows wrong file contents

I have an odd problem with Android Studio. Here is how my class file looks like on Android Studio And here is ... opening in AS but looks fine on text editors. Question&Answers:os...

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

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android - How to avoid reverse engineering of an APK file

I am developing a payment processing app for Android, and I want to prevent a hacker from accessing any resources, ... protect the source code in my APK file? Question&Answers:os...

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

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mysql - How to get UTF-8 working in Java webapps?

I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support ??? etc. for ... are used to access the site. How to achieve this? Question&Answers:os...

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

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MySQL: Insert record if not exists in table

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

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php - How to access object properties with names like integers or invalid property names?

I am using json_decode() something like: $myVar = json_decode($data) Which gives me output like this: [ ... numerals/integers there seems to be problem. Question&Answers:os...

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

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email - mailto link with HTML body

I have a couple of mailto links in a HTML document. <a href="mailto:etc..."> Can I insert HTML formatted ... and <b> tags for simple italic, bold formatting. Question&Answers:os...

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

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sql server - Optimistic vs. Pessimistic locking

I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would ... means "lock the table while reading." Question&Answers:os...

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

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How to get all properties values of a JavaScript Object (without knowing the keys)?

If there is a JavaScript object: var objects={...}; Suppose, it has more than 50 properties, without knowing the ... how to get each property value in a loop? Question&Answers:os...

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

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python - Remove all occurrences of a value from a list?

In Python remove() will remove the first occurrence of value in a list. How to remove all occurrences of a value from a list? This ... 2, 3], 2) [1, 3, 4, 3] Question&Answers:os...

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

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291 views

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rdbms - Normalization in database management system

I have a relation in a database: Emp_project(SSN,PNum,Hours,Ename,PName,Plocs) I have been asked to normalize the relation Emp_project. How do I normalize it? Question&Answers:os...

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

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groovy - How to access java-classes in the default-package?

I'm working now together with others in a grails project. I have to write some Java-classes. But I need access ... package from a Java-class in a named package? Question&Answers:os...

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

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161 views

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The need for parentheses in macros in C

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

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98 views

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java - Using context in a fragment

How can I get the context in a fragment? I need to use my database whose constructor takes in the context, ... = ctx; DBHelper = new DatabaseHelper(context); } Question&Answers:os...

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

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200 views

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Android Kotlin: Getting a FileNotFoundException with filename chosen from file picker?

I'm working on an Android application where one of the features is to let the user choose a file to open ( ... puzzles/hard001.txt (No such file or directory) Question&Answers:os...

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

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performance - Why does C++ code for testing the Collatz conjecture run faster than hand-written assembly?

I wrote these two solutions for Project Euler Q14, in assembly and in C++. They implement identical brute force approach for ... NASM): avg 501?ms. @hidefromkgb asm: avg 200?ms....

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

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performance - How to measure elapsed time in Python?

What I want is to start counting time somewhere in my code and then get the passed time, to measure the time it ... ) end = timeit.timeit() print(end - start) Question&Answers:os...

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

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120 views

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Redirect from an HTML page

Is it possible to set up a basic HTML page to redirect to another page on load? Question&Answers:os...

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

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282 views

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php - Split a comma-delimited string into an array?

I need to split my string input into an array at the commas. Is there a way to explode a comma-separated string into ... ,8 Output: ['9', 'admin@example', '8'] Question&Answers:os...

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

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391 views

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css selectors - What do commas and spaces in multiple classes mean in CSS?

Here is an example that I do not understand: .container_12 .grid_6, .container_16 .grid_8 { width: 460px; ... class='container_12'>. Is this assumption correct? Question&Answers:os...

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

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193 views

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python 3.x - How can I reconnect to the browser opened by webdriver with selenium?

For some unknown reasons ,my browser open test pages of my remote server very slowly. So I am thinking if I ... whether the question can be solved or not. Question&Answers:os...

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

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1.4k views

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gradle - How to enable multidexing with the new Android Multidex support library

I want to use the new Multidex support library to break the method limit for one of my apps. With Android ... and to build my app with multidex support? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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