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java - Difference Between Object Type and Reference Type

I was studying Polymorphism from "Head First Java" and came to this concept. Can anyone explain it please ... Reference Type and Object Type? See Question&Answers more detail:os...

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

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Limiting Python input strings to certain characters and lengths

I just started learning my first real programming language, Python. I'd like to know how to constrain user input ... it. Can anyone help? See Question&Answers more detail:os...

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

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javascript - Adding Google Translate to a web site

Looking here Google Translate I get the following code. <meta name="google-translate-customization" content=" ... using the later markup? See Question&Answers more detail:os...

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

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Sending mail in android without intents using SMTP

Hi I am developing an android app which will send mail on click of a button. Code worked at first but due to some ... ); } return null; } } } See Question&Answers more detail:os...

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

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Get Android Google Analytics referrer tag

We're planning to use Google Analytics to track ad click-through referrals, through the Android Market, to our ... have experience with this? See Question&Answers more detail:os...

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

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Angularjs JSONP not working

I might be missing something here but I can't make this JSONP request work, here is the code: var url = 'http:// ... the one I set ('error'). See Question&Answers more detail:os...

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

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How do I subtract minutes from a date in JavaScript?

How can I translate this pseudo code into working JS [don't worry about where the end date comes from ... " + myStartDate.toTimeString()); See Question&Answers more detail:os...

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

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typescript - What is target in tsconfig.json for?

What does target in tsconfig.json signify? { "compilerOptions": { "sourceMap": true, "target": "es5", "module": " ... "dom", "es2017" ] } } See Question&Answers more detail:os...

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

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ajax - Jquery and HTML FormData returns "Uncaught TypeError: Illegal invocation"

I'm using this script to upload my image files: http://jsfiddle.net/eHmSr/ $('.uploader input:file').on ... Illegal invocation Can you help me? See Question&Answers more detail:os...

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

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r - Control point border thickness in ggplot

When using ggplot, I can set shape to 21-25 to get shapes that have independent setting for the internal ( ... I control the border thickness? See Question&Answers more detail:os...

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

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date - Datetime in C# add days

I want to add days in some date. I have a code like this: DateTime endDate = Convert.ToDateTime(this.txtStartDate ... stupid mistake I'm doing? See Question&Answers more detail:os...

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

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How do I pause an Azure App Service Plan?

I thought one of the advantages of Azure was that I could turn services on and off depending on when I want them ... use. So how does that work? See Question&Answers more detail:os...

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

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html - What is the difference between readonly="true" & readonly="readonly"?

What is the difference between: <input name="TextBox1" type="text" id="TextBox1" readonly="true" /> ... functionality than readonly='readonly'? See Question&Answers more detail:os...

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

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r - Adding greek character to axis title

I want to add a greek character to the y-axis of my barplot in R. The problem is that I need this character ... . I hope I was clear enough. See Question&Answers more detail:os...

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

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python - Making a POST call instead of GET using urllib2

There's a lot of stuff out there on urllib2 and POST calls, but I'm stuck on a problem. I'm trying to do a ... with a POST within a HTML form). See Question&Answers more detail:os...

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

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html - text-align: right; only for placeholder?

how can active text-align: right; only for placeholder? <input type="text" name="airline_search" style=" ... align: right; for placeholder. See Question&Answers more detail:os...

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

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uitextfield - How to disable pasting in a TextField in Swift?

I've got a TextField with a numberPad and the function runs only if it contains numbers. The user will ... disable pasting in the TextField? See Question&Answers more detail:os...

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

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tsql - How to convert a "dd/mm/yyyy" string to datetime in SQL Server?

I tried this SELECT convert(datetime, '23/07/2009', 111) but got this error The conversion of a varchar data type ... How to fix the 1st one ? See Question&Answers more detail:os...

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

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xcodebuild - Xcode : Adding a project as a build dependency

Im playing around with the soundcloud api, in its instructions it says to drag SoundCloudAPI.xcodeproj into your ... accomplish the next step? See Question&Answers more detail:os...

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

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Python: Get URL path sections

How do I get specific path sections from a url? For example, I want a function which operates on this: http:// ... only a section of the path. See Question&Answers more detail:os...

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

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windows - While loop in batch

Here is what I want, inside the BACKUPDIR, I want to execute cscript /nologo c:deletefile.vbs %BACKUPDIR% ... /a countfiles-=%countfiles% ) See Question&Answers more detail:os...

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

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reactjs - When specified, "proxy" in package.json must be a string

I would like to have proxy in my react client, my package.json contains: ... "scripts": { "start": "react- ... Google</a> </header> </div> See Question&Answers more detail:os...

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

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cocoa touch - What are the default attributes for Objective-C properties?

What are the default attributes for a properpty when you do not list any in objective C? Such as for example if I ... , does it retain...etc.? See Question&Answers more detail:os...

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

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string - Python, print delimited list

Consider this Python code for printing a list of comma separated values for element in list: print element + ",", What ... ,2,3, desired 1,2,3 See Question&Answers more detail:os...

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

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android listview get selected item

I am new to android, I have a code in which I have placed buttons in list view. My list is as.. Number ... on buttons in getView(...) function. See Question&Answers more detail:os...

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

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c# - How to return 401 instead of 302 in ASP.NET Core?

I'm trying to get ASP.NET Core Identity to return 401 when a user isn't logged in. I've added an ... LoginPath to null or PathString.Empty. See Question&Answers more detail:os...

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

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327 views

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sql - Anonymous TABLE or VARRAY type in Oracle

In Oracle, I would sometimes like to create constructs such as these ones SELECT * FROM TABLE(STRINGS('a', 'b', ... at all, the answer is NO See Question&Answers more detail:os...

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

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count - Iterating through the Alphabet - C# a-caz

I have a question about iterate through the Alphabet. I would like to have a loop that begins with "a" and ... the function must return "bnd" See Question&Answers more detail:os...

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

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