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javascript - Spam Prevention/Reduction - Contact Form?

I want to add a simple Contact form to my web site so that customers can contact me easily. <form> NAME < ... could use for my Contact 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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c# - Get All Web Controls of a Specific Type on a Page

I have been pondering how I can get all controls on a page and then perform a task on them in this related ... each control to preform my task. 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 - How to retry a statement on error?

How can I simply tell R to retry a statement a few times if it errors? E.g. I was hoping to do something like ... { # Handle other errors } } ) See Question&Answers more detail:os...

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

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java - Getting events from a database

I am not very familiar with databases and what they offer outside of the CRUD operations. My research has led me ... the data at some interval. See Question&Answers more detail:os...

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

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coding style - What kind of prefix do you use for member variables?

No doubt, it's essential for understanding code to give member variables a prefix so that they can easily be ... . What about other languages? See Question&Answers more detail:os...

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

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Angular 2. How to use array of objects for controls in Reactive Forms

I need to dynamic create textarea for forms. I have the following model: this.fields = { isRequired: true, type ... of objects? This is Plunkr See Question&Answers more detail:os...

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

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SQL server join tables and pivot

I have two tables with data TABLE 1 --------------------------------------------------- | ... not sure if pivot is way to go for this or not. See Question&Answers more detail:os...

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

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What is the benefit of import in a namespace in R?

The namespace mechanism of R allows one to export functions which then are visible to the user. Furthermore, it ... plot, optim or qchisq? See Question&Answers more detail:os...

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

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Randomly shuffling lines in Linux / Bash

I have some files in linux. For example 2 and i need shuffling the files in one file. For example $cat file1 line ... 7 linea six line 1 line 6 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 to convert letters to numbers with Javascript?

How could I convert a letter to its corresponding number in JavaScript? For example: a = 0 b = 1 c = 2 d = ... to do this without a huge array? 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# - SqlBulkCopy - The given value of type String from the data source cannot be converted to type money of the specified target column

I'm getting this exception when trying to do an SqlBulkCopy from a DataTable. Error Message: The given value of ... ideas to get more info? See Question&Answers more detail:os...

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

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iteration - Python: Adding element to list while iterating

I know that it is not allowed to remove elements while iterating a list, but is it allowed to add elements to ... small it will return "false" 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# - OrderedDictionary and Dictionary

I was looking for a way to have my Dictionary enumerate its KeyValuePair in the same order that they were added. ... I have to use the index? 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 - return false the same as return?

Is return false the same as: return See Question&Answers more detail:os...

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

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Scala Sets contain the same elements, but sameElements() returns false

Whilst working through the Scala exercises on Iterables, I encountered the following strange behaviour: val xs = Set(5 ... for the larger set? See Question&Answers more detail:os...

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

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xcode - iOS error "Embedded binary is not signed with the same certificate as the parent app"

Those are my first steps in IOS applications development and I'm facing some problem that I can't figure out. ... know how it could be fixed? 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++ - C++11 - declaring non-static data members as 'auto'

Does C++11 allow declaring non-static data members as 'auto' if they are initialized in the declaration? ... as declaring local variables auto. See Question&Answers more detail:os...

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

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jqxhr - jQuery.post( ) .done( ) and success:

jQuery documentation on jQuery.post( ) // Assign handlers immediately after making the request, // and remember the ... jqXHR.done( ) method? See Question&Answers more detail:os...

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

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434 views

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html - Display Adobe pdf inside a div

I have a pdf file that the user has to see and click on the "I agree" button. How do you display a pdf inside a 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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angularjs - Use filter on ng-options to change the value displayed

I have an array of prices (0, 0.99, 1.99... etc) that I want to display in <select>. I want to use ... . I there a way to do that? Thanks 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# 4.0 - HttpClient vs HttpWebRequest

I have a large file which I have to send to a web api client...The data is multi part. The issue ... Httpclient that makes the upload faster? See Question&Answers more detail:os...

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

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677 views

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git clone can't resolve proxy

When I try to clone from git git clone "http://github.com/symfony/symfony.git" "d:/www/a/vendor/symfony" ... name = xxxx email = [email protected] 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++ - Problems using member function as custom deleter with std::shared_ptr

I'm trying to work out how to use std::shared_ptr with a custom deleter. Specifically, I'm using it ... Game class that is causing problems? See Question&Answers more detail:os...

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

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386 views

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android - Why is FusedLocationApi.getLastLocation null

I am trying to get location by using FusedLocationApi.getLastLocation and I've got the location permissions in the ... card, if it helps. 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 - JQuery $.ajax() post - data in a java servlet

I want to send data to a java servlet for processing. The data will have a variable length and be in key/value ... wrong or what am I missing? See Question&Answers more detail:os...

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

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httpurlconnection - Android HttpsUrlConnection eofexception

I have a problem where my HttpsURLConnection will throw an EOFException when i try to read any input. The code works ... close"); } Thanks! Rick See Question&Answers more detail:os...

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

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367 views

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Get n-th element of an array in MongoDB

As part of my document in MongoDB I'm storing an array of objects. How can I query it for only the 4th ... array out, just the 4th element. See Question&Answers more detail:os...

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

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284 views

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android - INSTALL_FAILED_CPU_ABI_INCOMPATIBLE on device using intellij

I've seen some questions about this, but none with real answers nor details. Here is my case: I have ... same thing happens with Android Studio See Question&Answers more detail:os...

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

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