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r - Error in <my code> : target of assignment expands to non-language object

I received the error Error in <my code> : target of assignment expands to non-language object or Error in <my code> ... does it mean, and how do I prevent it? Question&Answers:os...

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

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git - Does github remember commit IDs?

For a few days I was re-writing install.sh file for Scrollback project and since I was the only one working on ... some ideas to dig deep into this. Thanks! Question&Answers:os...

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

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python - How to print variables without spaces between values

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

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java - why equals() method when we have == operator?

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

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simpledateformat - Java date parsing with microsecond or nanosecond accuracy

According to the SimpleDateFormat class documentation, Java does not support time granularity above milliseconds ... code modifications or string manipulation? Question&Answers:os...

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

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598 views

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How to get out of while loop in java with Scanner method "hasNext" as condition?

I am a beginner at java programming and has run into a strange issue. Below is my code, which asks user for input ... ); // This somehow never get printed. } } Question&Answers:os...

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

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635 views

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templates - How to realize website with hundreds of pages in Angular2

I am preparing SPA website containing hundreds of article-like pages (apart from eCommerce, login etc.). Every ... I believe that there must exist some trick. Question&Answers:os...

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

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Accessing C# Anonymous Type Objects

How do i access objects of an anonymous type outside the scope where its declared? for e.g. void FuncB() { var obj ... = e.Name}).FirstOrDefault(); return a; } Question&Answers:os...

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

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javascript - ES6 promise settled callback?

I want to run the same action whether my Promise resolved successfully or not. I don't want to bind the same function ... has? If not, how do I achieve this? Question&Answers:os...

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

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How to flush the input stream in python?

I'm writing a simple alarm utility in Python. #!/usr/bin/python import time import subprocess import sys alarm1 = int ... EDIT: I'm running this on windows xp. Question&Answers:os...

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

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sql - How to simulate UNPIVOT in Access?

UNPIVOT is available in MS SQL-Server 2005, but AFAIK not in MS Access 2010. How can it be implemented ... most efficient SQL statement for Access 2010 here? Question&Answers:os...

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

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php - mysqli_query() expects parameter 1 to be mysqli, object given

I'm trying to create a class which can be used for connecting to MySQL database. This is my code: The ... in C:wampwwwuppgift 1 kompleteringest.php on line 13 Question&Answers:os...

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

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How to compare strings in C conditional preprocessor-directives

I have to do something like this in C. It works only if I use a char, but I need a string. How can I ... " #elif USER == "queen" #define USER_VS "jack" #endif Question&Answers:os...

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

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r - Create sequence of repeated values, in sequence?

I need a sequence of repeated numbers, i.e. 1 1 ... 1 2 2 ... 2 3 3 ... 3 etc. The way I ... do this, but there should be an intrinsic way to do this! Question&Answers:os...

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

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python - What's the best way to return multiple values from a function?

I have a function where I need to do something to a string. I need the function to return a boolean ... it pythonic for a function to return multiple values? Question&Answers:os...

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

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xml - Can Chrome be made to perform an XSL transform on a local file?

I was looking into xslt and started testing with the examples on w3schools. However, when I save the xml and ... .xml. Domains, protocols and ports must match. Question&Answers:os...

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

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python - How to add an image in Tkinter?

How do I add an image in Tkinter? This gave me a syntax error: root = tk.Tk() img = ImageTk.PhotoImage(Image.open ... = "both", expand = "yes") root.mainloop() Question&Answers:os...

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

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278 views

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asp.net mvc - Proper usage of .net MVC Html.CheckBoxFor

All I want to know is the proper syntax for the Html.CheckBoxFor HTML helper in ASP.NET MVC. What I'm trying ... .LabelFor(model => item.TemplateName) </td> } Question&Answers:os...

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

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318 views

1 answer

Conditional $sum in MongoDB

My collection in mongodb is similar to the following table in SQL: Sentiments(Company,Sentiment) Now, I need to execute a ... , SumNegSenti: {$sum: ? } } } ); Question&Answers:os...

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

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688 views

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css - Get element -moz-transform:rotate value in jQuery

I have CSS style for a layer: .element { -webkit-transform: rotate(7.5deg); -moz-transform: rotate(7.5deg); -ms- ... lot. What I'm looking to get is 7.5. Question&Answers:os...

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

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110 views

1 answer

How to get input field value using PHP

I have a input field as follows: <input type="text" name="subject" id="subject" value="Car Loan"> I would ... session. How do I do this using PHP or jQuery? Question&Answers:os...

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

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1.1k views

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python - Reversing 'one-hot' encoding in Pandas

I want to go from this data frame which is basically one hot encoded. In [2]: pd.DataFrame({"monkey":[0 ... using indexing etc to try to solve this problem. Question&Answers:os...

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

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234 views

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css - Changing Background Image with CSS3 Animations

Why this isn't working? What am I doing wrong? CSS @-webkit-keyframes test { 0% { background-image: url(' ... DEMO http://jsfiddle.net/hAGKv/ Thanks in advance! Question&Answers:os...

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

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346 views

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python - Subclassing tuple with multiple __init__ arguments

The following code works: class Foo(tuple): def __init__(self, b): super(Foo, self).__init__(tuple(b)) if __name__ ... ) takes at most 1 argument (2 given) Why? Question&Answers:os...

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

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219 views

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c - sprintf() with automatic memory allocation?

I'm searching for a sprintf()-like implementation of a function that automatically allocates required memory. So I want ... get it myself done. Thanks a lot! Question&Answers:os...

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

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355 views

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rust - Why do I need to import a trait to use the methods it defines for a type?

I have a very simple example of Rust code which fails to compile: extern crate rustc_serialize; use ... to use rustc_serialize::base64::ToBase64;? Question&Answers:os...

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

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686 views

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regex - MySQL Split Comma Separated String Into Temp Table

Can you parse a comma separated string into a temp table in MySQL using RegEx? '1|2|5|6' into temp table with 4 rows. Question&Answers:os...

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

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229 views

1 answer

html - Masonry-style Layout ONLY with CSS

As you can see in the image every box has a different height and there are some boxes with double width. Is ... to create a masonry-style layout only with CSS? Question&Answers:os...

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

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