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java - Why are integer literals with leading zeroes interpreted strangely?

This prints 83 System.out.println(0123) However this prints 123 System.out.println(123) Why does it work that way? Question&Answers:os...

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

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224 views

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How can I generate an MD5 hash in Java?

Is there any method to generate MD5 hash of a string in Java? Question&Answers:os...

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

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101 views

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javascript - What is the "right" JSON date format?

I've seen so many different standards for the JSON date format: ""\/Date(1335205592410)\/"" .NET ... Is there any sort of standard on this? Question&Answers:os...

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

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115 views

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python - How to save/restore a model after training?

After you train a model in Tensorflow: How do you save the trained model? How do you later restore this saved model? Question&Answers:os...

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

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67 views

1 answer

Iterate a list as pair (current, next) in Python

I sometimes need to iterate a list in Python looking at the "current" element and the "next" element. I ... idiomatic or efficient way to do the same thing? Question&Answers:os...

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

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186 views

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android - How can I make my custom objects Parcelable?

I'm trying to make my objects Parcelable. However, I have custom objects and those objects have ArrayList attributes of ... would be the best way to do this? Question&Answers:os...

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

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python - pip install failing with: OSError: [Errno 13] Permission denied on directory

pip install -r requirements.txt fails with the exception below OSError: [Errno 13] Permission denied: '/usr/local/lib/ ... 7/dist-packages/amqp-1.4.6.dist-info' Question&Answers:os...

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

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99 views

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javascript - Should all jquery events be bound to $(document)?

Where this is coming from When I first learned jQuery, I normally attached events like this: $('.my-widget a'). ... /speed/speed.html http://api.jquery.com/on/ Question&Answers:os...

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

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200 views

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c# - Create Generic method constraining T to an Enum

I'm building a function to extend the Enum.Parse concept that Allows a default value to be parsed in case that ... it for academic, and historical, interest :) Question&Answers:os...

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

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83 views

1 answer

javascript - Call child method from parent

I have two components: Parent component Child component I was trying to call Child's method from Parent, I ... and Parent components are in two different files. Question&Answers:os...

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

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370 views

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c++ - "unpacking" a tuple to call a matching function pointer

I'm trying to store in a std::tuple a varying number of values, which will later be used as arguments ... a function pointer until an arbitrary future point? Question&Answers:os...

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

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89 views

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javascript - load and execute order of scripts

There are so many different ways to include JavaScript in a html page. I know about the following options: inline ... other having been executed (and why :-)? Question&Answers:os...

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

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116 views

1 answer

python - urllib and "SSL: CERTIFICATE_VERIFY_FAILED" Error

I am getting the following error: Exception in thread Thread-3: Traceback (most recent call last): File "/ ... How can I make it bypass the verification? Question&Answers:os...

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

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installation - Homebrew install specific version of formula?

How do I install a specific version of a formula in homebrew? For example, postgresql-8.4.4 instead of the latest 9.0. Question&Answers:os...

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

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259 views

1 answer

How can I take a screenshot with Selenium WebDriver?

Is it possible to take a screenshot using Selenium WebDriver? (Note: Not Selenium Remote Control) Question&Answers:os...

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

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346 views

1 answer

git - How do you fix a bad merge, and replay your good commits onto a fixed merge?

I accidentally committed an unwanted file (filename.orig while resolving a merge) to my repository several commits ago ... to the repository in the first place? Question&Answers:os...

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

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45 views

1 answer

How can I explicitly free memory in Python?

I wrote a Python program that acts on a large input file to create a few million objects representing triangles. The ... of the data, and it can be freed? Question&Answers:os...

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

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149 views

1 answer

Why is January month 0 in Java Calendar?

In java.util.Calendar, January is defined as month 0, not month 1. Is there any specific reason to that ? I have seen many people getting confused about that... Question&Answers:os...

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

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126 views

1 answer

php - What are the "standard" timezone abbreviations?

I am storing time zone by offset-from-UTC for an application using this dropdown: <select id="timezone" name="timezone" ... ; } } $count++; } print_r($new); Question&Answers:os...

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

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312 views

1 answer

How do I connect to a specific Wi-Fi network in Android programmatically?

I want to design an app which shows a list of Wi-Fi networks available and connect to whichever network is selected by ... of scan results. How do I do this? Question&Answers:os...

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

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112 views

1 answer

php - JSON encode MySQL results

How do I use the json_encode() function with MySQL query results? Do I need to iterate through the rows or can I just apply it to the entire results object? Question&Answers:os...

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

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97 views

1 answer

android - How to pass values between Fragments

I am just trying to build a simple sample application that uses Fragments. My scenario is, I have two ... in SecondActivity.java to the Fragment_2.Java file? Question&Answers:os...

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

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266 views

1 answer

JavaScript get clipboard data on paste event (Cross browser)

How can a web application detect a paste event and retrieve the data to be pasted? I would like to ... could not find similar functionality for other browsers. Question&Answers:os...

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

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115 views

1 answer

String comparison technique used by Python

I'm wondering how Python does string comparison, more specifically how it determines the outcome when a less than ... b in the second string (second position). Question&Answers:os...

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

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261 views

1 answer

jQuery find events handlers registered with an object

I need to find which event handlers are registered over an object. For example: $("#el").click(function() {.. ... methods, is it possible on a plain DOM object? Question&Answers:os...

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

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305 views

1 answer

git - How do I update or sync a forked repository on GitHub?

I forked a project, applied several fixes and created a pull request which was accepted. A few days later, ... to contribute? Or is there an update button? Question&Answers:os...

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

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687 views

1 answer

angular2 changedetection - Triggering change detection manually in Angular

I'm writing an Angular component that has a property Mode(): string. I would like to be able to set ... there a way to trigger this change detection manually? Question&Answers:os...

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

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827 views

1 answer

python - Split / Explode a column of dictionaries into separate columns with pandas

I have data saved in a postgreSQL database. I am querying this data using Python2.7 and turning it into a Pandas ... ? is there a way to convert the Unicode? Question&Answers:os...

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

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