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I'm getting the above error on the ToList() line of the code below if (emailReplyTo != null) { System. ... /questions/5538377/system-array-does-not-contain-a-definition-for-tolist...

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javascript - Why is this an invalid assignment left hand side?

Why can I do the following operations: var b1, b2; b1 = b2 = true; document.write(b1," ", b2); ... .com/questions/40581507/why-is-this-an-invalid-assignment-left-hand-side...

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Laravel Eloquent Compare Column Values

Eloquent's where() seems not working when comparing two column values. How to fix it? Sample code: ... //stackoverflow.com/questions/30331437/laravel-eloquent-compare-column-values...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Python.h: No such file or directory

I recently installed KDevelop 4 for C++ development on my Macbook Pro running Ubuntu 12.04 LTS. I want ... stackoverflow.com/questions/11041299/python-h-no-such-file-or-directory...

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I feel silly having to ask what seems like a basic question. I've Googled plenty, and I've examined the Default(OSX ... sublime-text-2-how-to-position-cursor-at-begin-end-of-buffer...

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windows - Android NDK Default location

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java - Apache Commons Net FTPClient and listFiles()

Can anyone explain me what's wrong with the following code? I tried different hosts, FTPClientConfigs, it' ... .com/questions/2712967/apache-commons-net-ftpclient-and-listfiles...

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linux - scp gives "not a regular file"

I have a problem when using scp on Linux, it says "not a regular file". I looked at other questions/answers ... ://stackoverflow.com/questions/29547087/scp-gives-not-a-regular-file...

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php - Laravel - last login date and time timestamp

I know there are fields automatically inserted (e.g. updated_at and created_at) but I was wondering if there ... .com/questions/22460066/laravel-last-login-date-and-time-timestamp...

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php - Call to undefined method IlluminateDatabaseQueryBuilder::lists() when seeding after updating to Laravel 5.3

I'm updating to laravel 5.3, and I get this message: [2016-08-23 23:12:39] local.ERROR: ... /39114249/call-to-undefined-method-illuminate-database-query-builderlists-when-seeding...

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vb.net - Is it possible to do a For...Each Loop Backwards?

I don't believe this is possible by conventional methods, but something like this verbose code: For Each s As String In ... /952136/is-it-possible-to-do-a-for-each-loop-backwards...

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Randomly change the prompt in the Python interpreter

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asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Setting a UITextField into editing mode programmatically

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python - Django formsets: make first required?

These formsets are exhibiting exactly the opposite behavior that I want. My view is set up like this: ... //stackoverflow.com/questions/2406537/django-formsets-make-first-required...

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c++ - VC++ fatal error LNK1168: cannot open filename.exe for writing

Suddenly, my Visual Studio Express 2010 C++ stopped rebuilding my project. When I first hit F7 the project builds ... /vc-fatal-error-lnk1168-cannot-open-filename-exe-for-writing...

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debugging - What are the top JavaScript pitfalls?

question from:https://stackoverflow.com/questions/2749952/what-are-the-top-javascript-pitfalls...

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php - TCPDF Save file to folder?

I'm using TCPDF to print a receipt and then send it to customer with phpMailer, but I have a problem: I ... :https://stackoverflow.com/questions/12304553/tcpdf-save-file-to-folder...

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Sorting Descending order: Java Map

What I want to do is sort a map by value. I went over many questions that are available on the ... :https://stackoverflow.com/questions/18923167/sorting-descending-order-java-map...

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javascript - Dynamically resizing Image-maps and images

I'm currently trying to make an Image-Map on my site that will resize depending on the size of ... /stackoverflow.com/questions/13321067/dynamically-resizing-image-maps-and-images...

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c# - How can I bind a background color in WPF/XAML?

What do I have to change to the following code so that the background is red, neither of the 2 ways I tried ... /questions/1962149/how-can-i-bind-a-background-color-in-wpf-xaml...

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c# - How to write a code with expiration date?

I just had this idea for something that I'd love to be able to use: Let's say I have to fix a bug ... //stackoverflow.com/questions/5222015/how-to-write-a-code-with-expiration-date...

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Angular/CLI -- auto reload doesn't happen

I recently started working with Angular/CLI tool, I'm facing a problem while executing the file, that ... stackoverflow.com/questions/44335456/angular-cli-auto-reload-doesnt-happen...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Is there any way to have one and only one instance of each activity?

I'm finding that in my application, the user can get quite 'nested' in the various activities that are opened while ... any-way-to-have-one-and-only-one-instance-of-each-activity...

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python - Slicing a list into a list of sub-lists

(This question already has answers here): question from:https://stackoverflow.com/questions/2231663/slicing-a-list-into-a-list-of-sub-lists...

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javascript - Get the number of rows in a HTML table

(This question already has answers here): question from:https://stackoverflow.com/questions/11742946/get-the-number-of-rows-in-a-html-table...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Get Bitmap from ImageView in Android L

I want to get Bitmap from ImageView. I have used following code, but getDrawable() returns null. How to ... .com/questions/26865787/get-bitmap-from-imageview-in-android-l...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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