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When talking about data models and databases, the term Cardinality is often used to describe the number ... https://stackoverflow.com/questions/17877582/multiplicity-vs-cardinality...

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python - Django Query using .order_by() and .latest()

I have a model: class MyModel(models.Model): creation_date = models.DateTimeField(auto_now_add = True, editable=False ... /questions/3736964/django-query-using-order-by-and-latest...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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forms - Jquery toggle event is messing with checkbox value

I'm using Jquery's toggle event to do some stuff when a user clicks a checkbox, like this: $(' ... .com/questions/355638/jquery-toggle-event-is-messing-with-checkbox-value...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Instruments > device grayed out

I'm running an app on my iOS device but, in Instruments, that device is greyed out. This also ... from:https://stackoverflow.com/questions/28913801/instruments-device-grayed-out...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios7 - iOS 7: MPMusicPlayerController volume deprecated. How to change device volume now?

MPMusicPlayerController setVolume is deprecated since iOS 7 Is there any other way to change system music volume ... -volume-deprecated-how-to-change-device-volume-no...

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command line - Copy to clipboard using Bash for Windows

How do I copy results from the commandline directly to the clipboard? On Windows's cmd.exe I can do ... .com/questions/43144008/copy-to-clipboard-using-bash-for-windows...

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html - How can I force two elements to always stay on the same line in a <td>

The code is pretty simple: <table id="tabel_user" style="width: 100%; border: 0; background-color: white;" cellpadding="0" ... -two-elements-to-always-stay-on-the-same-line-in-a-td...

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c# - Why is ConcurrentBag<T> so slow in .Net (4.0)? Am I doing it wrong?

Before I started a project, I wrote a simple test to compare the performance of ConcurrentBag from (System.Collections.Concurrent) ... -so-slow-in-net-4-0-am-i-doing-it-wrong...

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dom - HTML Placeholder browser compatibility

What browsers support the placeholder html tag for text inputs? Does Internet Explorer support it? ( ... /stackoverflow.com/questions/4004087/html-placeholder-browser-compatibility...

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syntax - What does "options = options || {}" mean in Javascript?

(This question already has answers here): question from:https://stackoverflow.com/questions/2851404/what-does-options-options-mean-in-javascript...

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c++ - With C++11, is it undefined behavior to write f(x++), g(x++)?

I was reading this question: Undefined behavior and sequence points and, specifically, the C++11 answer, and I ... 45815301/with-c11-is-it-undefined-behavior-to-write-fx-gx...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vb.net - Casting a boolean to an integer returns -1 for true?

I am working with some VB.NET code that seems to be casting a boolean value to an integer using CInt(myBoolean). ... /3621037/casting-a-boolean-to-an-integer-returns-1-for-true...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vb.net - Casting a boolean to an integer returns -1 for true?

I am working with some VB.NET code that seems to be casting a boolean value to an integer using CInt(myBoolean). ... /3621037/casting-a-boolean-to-an-integer-returns-1-for-true...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Getting XML Node text value with Java DOM

I can't fetch text value with Node.getNodeValue(), Node.getFirstChild().getNodeValue() or with Node.getTextContent() ... /questions/773012/getting-xml-node-text-value-with-java-dom...

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scala - View SQL query in Slick

Is there a way to observe an SQL statement that will be generated by Query? For example, I have this: val ... :https://stackoverflow.com/questions/23434286/view-sql-query-in-slick...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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webforms - Page_Load is firing twice in ASP.NET page

Asp.net page_load function is loading twice.. hence it affects my page performance. Does anyone know the reason it ... questions/4785825/page-load-is-firing-twice-in-asp-net-page...

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javascript - Google Chrome Customize Developer Tools Theme / Color Schema

How to change color schema on Developer Tools, JavaScript Console in Google Chrome ? Like this: question ... /20777454/google-chrome-customize-developer-tools-theme-color-schema...

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sql - Multiple FULL OUTER JOIN on multiple tables

I have multiple outer joins SELECT A.column2 , B.column2 , C.column2 FROM ( (SELECT month, column2 FROM ... .com/questions/16167902/multiple-full-outer-join-on-multiple-tables...

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bash - Node.js Shell Script And Arguments

I need to execute a bash script in node.js. Basically, the script will create user account on the system ... /stackoverflow.com/questions/7464036/node-js-shell-script-and-arguments...

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Unix shell file copy flattening folder structure

On the UNIX bash shell (specifically Mac OS X Leopard) what would be the simplest way to copy every file ... .com/questions/27621/unix-shell-file-copy-flattening-folder-structure...

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typescript - Cannot find control with name: formControlName in angular reactive form

I found this problem in many questions in stackoverflow but no luck. Please help me for figuring out what I ... @ zone.js:649 drainMicroTaskQueue @ zone.js:582 Zone...

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android - Navigation Drawer item background colour for selected item

I used Android Studio to implement the Navigation Drawer and I can't get the blue colour that is ... questions/22374660/navigation-drawer-item-background-colour-for-selected-item...

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Xcode: Delete applications in Organizer/Archives?

I've been getting the "there was internal api error" message in Xcode and I've finally figured ... .com/questions/7926804/xcode-delete-applications-in-organizer-archives...

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jquery - Avoid stepping through javascript file in Chrome Developer Tools?

I am wondering, is there any way to omit a javascript file from Chrome Developer Tools debugger, so it ... /7827882/avoid-stepping-through-javascript-file-in-chrome-developer-tools...

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python csv unicode 'ascii' codec can't encode character u'xf6' in position 1: ordinal not in range(128)

I have copied this script from [python web site][1] This is another question but now problem with encoding: import ... -ascii-codec-cant-encode-character-u-xf6-in-position-1-o...

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delphi - Why variables are declared as TStrings and created as TStringList?

Why variables are declared as TStrings and created as TStringList? eg: the var sl is declared as TStrings but ... /why-variables-are-declared-as-tstrings-and-created-as-tstringlist...

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javascript - How do I connect bower components with sails.js?

I'd like to be able to install Javascript dependencies through bower and use them in a sails.js app, but I ... /questions/18139290/how-do-i-connect-bower-components-with-sails-js...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Why does {} + [] return 0 in Javascript?

(This question already has answers here): question from:https://stackoverflow.com/questions/11939044/why-does-return-0-in-javascript...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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