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Is python's sorted() function guaranteed to be stable?

The documentation doesn't guarantee that. Is there any other place that it is documented? I'm guessing it ... relative order of elements that compare equal". Question&Answers:os...

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

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html - Creating anchor tag inside anchor tag

During my random testing I saw a behavior where I put an anchor tag inside another anchor tag. I made a ... should not be allowed. Is my assumption correct? Question&Answers:os...

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

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What do you call the &: operator in Ruby?

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

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class - Is it possible to overload Python assignment?

Is there a magic method that can overload the assignment operator, like __assign__(self, new_value)? I'd like to ... Is it insane? Should I be on medicine? Question&Answers:os...

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

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python - Limit number of threads in numpy

It seems that my numpy library is using 4 threads, and setting OMP_NUM_THREADS=1 does not stop this. numpy. ... make it use 1 thread for matrix multiplication. 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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javascript - Is useState synchronous?

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

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java - javax.net.ssl.SSLException: Received fatal alert: protocol_version

Has anyone encountered this error before? I'm new to SSL, is there anything obviously wrong with my ClientHello ... .create(JSSESocketFactory.java:186) at ... Question&Answers:os...

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

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How to wrap text around an image using HTML/CSS

I want to design a block of text like the following picture: Question whether this is possible? Question&Answers:os...

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

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javascript - Download pdf file using jquery ajax

I want to download a pdf file for jquery ajax response. Ajax response contains pdf file data. I tried this solution. My ... Sample.pdf"; link.click(); }); }); Question&Answers:os...

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

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c# - How to get the size of the current screen in WPF?

I know I can get the size of the primary screen by using System.Windows.SystemParameters.PrimaryScreenWidth; System. ... so from code (C#) would suffice. Question&Answers:os...

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

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c - What does this GCC error "... relocation truncated to fit..." mean?

I am programming the host side of a host-accelerator system. The host runs on the PC under Ubuntu Linux and ... , while it is OK with the older project? Question&Answers:os...

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

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Javascript Closures and 'this'

I have a problem with an object I have created that looks something like this: var myObject = { AddChildRowEvents: ... to 'myObject' what am I doing wrong? Question&Answers:os...

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

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253 views

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java - How to run TestNG from command line

How exactly do I run a .java TestNG project from a command line? I have read through the TestNG documentation, ... . Does anyone know how to get this working? Question&Answers:os...

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

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javascript - Why Array.indexOf doesn't find identical looking objects

I have array with objects. Something Like this: var arr = new Array( {x:1, y:2}, {x:3, y:4} ); ... making string hash keys for objects and give it to array... Question&Answers:os...

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

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391 views

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internet explorer - jQuery's .load() not working in IE - but fine in Firefox, Chrome and Safari

I'm hitting my head on the wall against this one ... I have the following code: $("#home").click(function(e) ... the live site at http://www.brick-n-mortar.com Question&Answers: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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types - How do I define Lisp’s apply in Haskell?

Shouldn't this definition be allowed in a lazy language like Haskell in which functions are curried? apply f [ ... Lisp for example. Are there any workarounds? Question&Answers:os...

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

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217 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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157 views

1 answer

windows - How to test if a file is a directory in a batch script?

Is there any way to find out if a file is a directory? I have the file name in a variable. In Perl I can do this: if(-d $var) { print "it's a directory " } Question&Answers:os...

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

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322 views

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java - How to use the legacy Apache HTTP client on Android Marshmallow?

Background On Android Marshmallow, Google has completely removed the support of Apache HTTP client (link here) ... .com/p/android/issues/detail?id=181474 Question&Answers:os...

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

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java - How to map a PostgreSQL array with Hibernate

has anyone successfully mapped a numeric array in PostgreSQL to a numeric array in java via Hibernate? sql: ... get an exception when querying the table. Question&Answers:os...

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

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120 views

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c++ - How does ifstream's eof() work?

#include <iostream> #include <fstream> int main() { std::fstream inf( "ex.txt", std::ios::in ); while( ! ... which was 'abc'? Can anyone help me explain this? Question&Answers:os...

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

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225 views

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c# - string.split - by multiple character delimiter

i am having trouble splitting a string in c# with a delimiter of "][". For example the string "abc][rfd][ ... am glad to be able to resolve this split question. Question&Answers:os...

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

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220 views

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r - dplyr::select function clashes with MASS::select

If I load the MASS package: library(MASS) then load try to run dplyr::select, I get a error: library(dplyr ... I use dplyr::select with the MASS package loaded? Question&Answers:os...

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

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98 views

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javascript - Retrieving the text of the selected <option> in <select> element

In the following: <select id="test"> <option value="1">Test One</option> <option value="2">Test Two< ... what property returns the text of the selected option? Question&Answers:os...

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

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307 views

1 answer

Can Python pickle lambda functions?

I have read in a number of threads that Python pickle/cPickle cannot pickle lambda functions. However the ... provides a way to pickle function bodies. Question&Answers:os...

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

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174 views

1 answer

sql - How can I import a JSON file into PostgreSQL?

For example I have a file customers.json which is an array of objects (strictly formed) and it's pretty plain ... json to postgres with no touching of sql? Question&Answers:os...

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

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268 views

1 answer

c# - LINQ to Entities does not recognize the method 'Double Parse(System.String)' method, and this method cannot be translated into a store expression

I get the error when i try to run report. The problem is here: model.Referring = Math.Round(_newSurveyResult ... .OverallScore = Math.Round(overAllScore); } } Question&Answers:os...

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

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