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oop - How do I make JavaScript Object using a variable String to define the class name?

Here's what I'm trying to do -- this is pseudo code and doesn't work. Does anyone know how to ... class name string var myObject = new classNameString(); Question&Answers:os...

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

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visual studio - Microsoft.ACE.OLEDB.12.0 provider is not registered

I have a Visual Studio 2008 solution with two projects (a Word-Template project and a VB.Net console application for ... but I don't know what. Any ideas? Question&Answers:os...

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

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109 views

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Best way to add a "nothing selected" option to a selectOneMenu in JSF

I was wondering what would be the best or easiest way to allow a user to select nothing in a selectOneMenu. My ... don't think that this is the best solution. Question&Answers:os...

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

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python - Prepend line to beginning of a file

I can do this using a separate file, but how do I append a line to the beginning of a file? f=open('log. ... the file since the file is opened in append mode. Question&Answers:os...

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

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html - How does jQuery work when there are multiple elements with the same ID value?

I fetch data from Google's AdWords website which has multiple elements with the same id. Could you please explain why the ... #a", w).length); // 2 }); Question&Answers:os...

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

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regex - Extracting a string between other two strings in R

I am trying to find a simple way to extract an unknown substring (could be anything) that appear between two ... do it by using a correct regular expression. Question&Answers:os...

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

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c++ - strptime() equivalent on Windows?

Is there a good equivalent implementation of strptime() available for Windows? Unfortunately, this POSIX function does ... struct, the opposite of strftime(). Question&Answers:os...

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

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excel - VBA code doesn't run when cell is changed by a formula

Worksheet A has ranges of data that are collected from Worksheet B. Worksheet A has a macro that calculates ... Application.EnableEvents = True End If End Sub Question&Answers:os...

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

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Javascript RegEx Not Working

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

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google play - Android app is supported by 0 devices

I'm having trouble with the Google Play store that insists that my app is supported by 0 devices. I've tried all ... looked at our FAQs?" replies to e-mails. Question&Answers:os...

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

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c - How does concatenation of two string literals work?

char* a="dsa" "qwe"; printf("%s", a); output: dsaqwe My question is why does this thing work. If ... it concatenates the string literals. How is this working? Question&Answers:os...

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

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java generics covariance

I am having trouble understanding the following article: http://www.ibm.com/developerworks/java/library/j-jtp01255. ... with an example. Thanks in advance. Question&Answers:os...

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

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java - Swing HTML drawString

I'm trying to create some special component for a specific purpose, on that component I need to draw a HTML string, ... is. Is there any way to make that work? Question&Answers:os...

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

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213 views

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angularjs - Angular UI Router - Nested States with multiple layouts

I want to have multiple layouts (1-col, 2-col, 3-col) which I want to switch out for different routes based on ... / page footer --> </div> Appreciate the help Question&Answers:os...

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

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python - Keras Dense layer's input is not flattened

This is my test code: from keras import layers input1 = layers.Input((2,3)) output = layers.Dense(4)( ... dot product with kernel. While the output is reshaped? Question&Answers:os...

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

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flutter - "The operator can’t be unconditionally invoked because the receiver can be null" error after migrating to Dart null-safety

I'm upgrading a personal package that is based on the Flutter framework. I noticed here in the Flutter Text widget ... GitHub so I'm posting an answer below. Question&Answers:os...

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

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regex - My regular expression matches too much. How can I tell it to match the smallest possible pattern?

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

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1 answer

regex - How to match multiple occurrences of a substring

If I have an HTML string such as: <div><p>￡20<span class="abc" /><span class="def">56</span></p>< ... leading or trailing the first / last digit in the string. Question&Answers:os...

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

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c - Return value range of the main function

What does standard say about main return values range? Say only up to 255? Because int main(void){ return 256; } echo $? ; # out 0 Question&Answers:os...

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

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sql - Create unique constraint with null columns

I have a table with this layout: CREATE TABLE Favorites ( FavoriteId uuid NOT NULL PRIMARY KEY, UserId uuid NOT NULL ... 0. Is there any method I'm overlooking? Question&Answers:os...

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

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173 views

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python - How to generate keyboard events?

short summary: I am trying to create a program that will send keyboard events to the computer that for all purposes ... well, but have yet to find a solution. Question&Answers:os...

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

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518 views

1 answer

python - Split cell into multiple rows in pandas dataframe

I have a dataframe contains orders data, each order has multiple packages stored as comma separated string [package & ... : How can I do that with pandas? Question&Answers:os...

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

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270 views

1 answer

php exec command (or similar) to not wait for result

I have a command I want to run, but I do not want PHP to sit and wait for the result. <?php echo " ... was someone making a CRON job to start in a minute. Question&Answers:os...

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

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352 views

1 answer

sd card - Android how to use Environment.getExternalStorageDirectory()

How can i use Environment.getExternalStorageDirectory() to read a a stored image from the SD card or is there a better way to do it? Question&Answers:os...

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

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267 views

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html - How can I simulate an anchor click via jquery?

I have a problem with faking an anchor click via jQuery: Why does my thickbox appear the first time I click on ... it seems to work every time. Any hints? Question&Answers:os...

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

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239 views

1 answer

Page scroll up or down in Selenium WebDriver (Selenium 2) using java

I have written the following code in Selenium 1 (a.k.a Selenium RC) for page scrolling using java: selenium. ... the equivalent code in Selenium 2 (WebDriver)? Question&Answers:os...

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

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151 views

1 answer

c# - How to change row color in datagridview?

I would like to change the color of a particular row in my datagridview. The row should be changed to red ... 10. Any suggestions on how to accomplish this? Question&Answers:os...

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

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913 views

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this - Why is JavaScript bind() necessary?

The problem in example 1 is 'this' referring to the global name instead of the myName object. I understand the use ... ("example 3: " + storeMyName3); // works Question&Answers:os...

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

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