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I have a char in c#: char foo = '2'; Now I want to get the 2 into an int. I find that ... odd that there's nothing native to directly make the conversion. Question&Answers:os...

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

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javascript - What values can a constructor return to avoid returning this?

What are the exact circumstances for which a return statement in Javascript can return a value other than this when a ... Foo () instanceof Foo) === false? Question&Answers:os...

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

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json - What is "406-Not Acceptable Response" in HTTP?

In my Ruby on Rails application I tried to upload an image through the POSTMAN REST client in Base64 format. When I POST the ... "******base64 Format*******" } Question&Answers:os...

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

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Vertical (rotated) label in Android

I need 2 ways of showing vertical label in Android: Horizontal label turned 90 degrees counterclockwise (letters on the ... if I need to go completely custom? Question&Answers:os...

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

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256 views

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c# - How do I use reflection to invoke a private method?

There are a group of private methods in my class, and I need to call one dynamically based on an input ... GetMethod() so that it can locate private methods? Question&Answers:os...

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

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c# - Can constructors be async?

I have a project where I'm trying to populate some data in a constructor: public class ViewModel { public ... explanation, but can't seem to find any. Question&Answers:os...

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

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javascript - How to run a function when the page is loaded?

I want to run a function when the page is loaded, but I don't want to use it in the <body> tag. I have a ... . So how do I run it when the page is loaded? Question&Answers:os...

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

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Struct padding in C++

If I have a struct in C++, is there no way to safely read/write it to a file that is cross- ... every compiler 'pads' differently based on the target platform. Question&Answers:os...

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

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c++ - Undefined reference to a static member

I'm using a cross compiler. My code is: class WindowsTimer{ public: WindowsTimer(){ _frequency.QuadPart = 0ull; ... I'm still getting errors. anyone knows why? Question&Answers:os...

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

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How do I convert a date/time string to a DateTime object in Dart?

Say I have a string "1974-03-20 00:00:00.000" It is created using DateTime.now(), how do I convert the string back to a DateTime object? Question&Answers:os...

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

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html - Why are flex items not wrapping?

I am attempting to make multiple rows of squares (3 per line) which have the same height. I have written some HTML and CSS ... alt="image two" /> </div> </div> Question&Answers:os...

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

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wpf - How to deal with cross-thread access exceptions?

A common exception one can get when working with multiple threads in WPF is: The calling thread cannot access ... are the options to deal with this properly? Question&Answers:os...

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

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powershell - How do I pass a local variable to a remote `Invoke-Command`?

This question already has an answer here: Question&Answers:os...

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

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git diff - Viewing unpushed Git commits

How can I view any local commits I've made, that haven't yet been pushed to the remote repository? Occasionally, ... install of Git, or am I missing something? Question&Answers:os...

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

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How can I write a heredoc to a file in Bash script?

How can I write a here document to a file in Bash script? Question&Answers:os...

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

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122 views

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c++ - Which is faster: Stack allocation or Heap allocation

This question may sound fairly elementary, but this is a debate I had with another developer I work with ... so minute it becomes pointless micro-optimization. Question&Answers:os...

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

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725 views

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javascript - Logical operator in a handlebars.js {{#if}} conditional

Is there a way in handlebars JS to incorporate logical operators into the standard handlebars.js conditional operator? ... sure I'm not reinventing the wheel. 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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batch file - How do I measure execution time of a command on the Windows command line?

Is there a built-in way to measure execution time of a command on the Windows command line? Question&Answers:os...

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

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93 views

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javascript - HTML form readonly SELECT tag/input

According to HTML specs, the select tag in HTML doesn't have a readonly attribute, only a disabled attribute. So ... select tag, and still get the POST data? Question&Answers:os...

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

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322 views

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CSS @font-face not working with Firefox, but working with Chrome and IE

The following code works in Google Chrome beta as well as IE 7. However, Firefox seems to have a problem with this ... How is this possible? What am I missing? Question&Answers:os...

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

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464 views

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sql - Oracle: how to UPSERT (update or insert into a table?)

The UPSERT operation either updates or inserts a row in a table, depending if the table already has a row that matches ... , what's the best way to do this? Question&Answers:os...

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

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c# - Kill child process when parent process is killed

I'm creating new processes using System.Diagnostics.Process class from my application. I want this processes ... child processes dependent on parent process? Question&Answers:os...

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

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136 views

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python - What's the difference between globals(), locals(), and vars()?

What is the difference between globals(), locals(), and vars()? What do they return? Are updates to the results useful? Question&Answers:os...

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

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79 views

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java - Android: How to use AlarmManager

I need to trigger a block of code after 20 minutes from the AlarmManager being set. Can someone show me sample code on ... a few days and it just won't work. Question&Answers:os...

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

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87 views

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How do I remove duplicates from a C# array?

I have been working with a string[] array in C# that gets returned from a function call. I could possibly ... best way to remove duplicates from a C# array? Question&Answers:os...

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

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c# - Parsing JSON using Json.net

I'm trying to parse some JSON using the JSon.Net library. The documentation seems a little sparse and I'm ... luck. Hopefully this all makes sense, any ideas? Question&Answers:os...

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

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Generating random results by weight in PHP?

I know how to generate a random number in PHP but lets say I want a random number between 1-10 but I want more ... honestly, I don't even know where to start. Question&Answers:os...

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

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129 views

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sql - Auto Increment after delete in MySQL

I have a MySQL table with a primary key field that has AUTO_INCREMENT on. After reading other posts on here I' ... to look neat and have a bit more consistency. Question&Answers:os...

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

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