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ssl - CFNetwork SSLHandshake failed iOS 9

has anyone with the iOS 9 beta 1 had this issue? I use standard NSURLConnection to ... :urlRequest returningResponse:&response error:&error]; Question&Answers:os...

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

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c++ - Pure virtual function with implementation

My basic understanding is that there is no implementation for a pure virtual function, however, I was told ... a pure virtual function with an implementation? Question&Answers:os...

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

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pandas - How to split data into 3 sets (train, validation and test)?

I have a pandas dataframe and I wish to divide it to 3 separate sets. I know that using train_test_split from ... split the data into 3 sets instead of 2? Question&Answers:os...

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

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javascript - How to implement "select all" check box in HTML?

I have an HTML page with multiple checkboxes. I need one more checkbox by the name "select all". When I select ... page must be selected. How can I do this? Question&Answers:os...

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

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angular - ExpressionChangedAfterItHasBeenCheckedError Explained

Please explain to me why I keep getting this error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after ... hacky fixes in the future. Question&Answers:os...

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

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html - Why does the jquery change event not trigger when I set the value of a select using val()?

The logic in the change() event handler is not being run when the value is set by val(), but it does run when user ... ); $("#single").val("Single2"); </script> Question&Answers:os...

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

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c# - Why would you use String.Equals over ==?

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

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javascript - jQuery: Get height of hidden element in jQuery

I need to get height of an element that is within a div that is hidden. Right now I show the div, get the ... can only get height if its visible $select.hide(); Question&Answers:os...

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

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apache - How to Set AllowOverride all

I want to set the AllowOverride all But I don't know how to do it. I have found the following code by searching the ... where to put this code or how to do it? Question&Answers:os...

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

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c# - SQL Data Reader - handling Null column values

I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null ... way to handle null values in this situation? Question&Answers:os...

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

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jquery - How to Use slideDown (or show) function on a table row?

I'm trying to add a row to a table and have that row slide into view, however the slidedown function seems to be ... row.html(data); row.slideDown(1000); } ); Question&Answers:os...

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

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events - How do I monitor clipboard changes in C#?

Is there a clipboard changed or updated event that i can access through C#? Question&Answers:os...

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

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c# - Catch an exception thrown by an async void method

Using the async CTP from Microsoft for .NET, is it possible to catch an exception thrown by an async method in ... calling code if that is even possible at all. Question&Answers:os...

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

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Fitting a density curve to a histogram in R

Is there a function in R that fits a curve to a histogram? Let's say you had the following histogram hist(c( ... seem to find the answer for R on the internet. Question&Answers:os...

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

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python - Removing duplicates from a list of lists

I have a list of lists in Python: k = [[1, 2], [4], [5, 6, 2], [1, 2], [3], [ ... .43799996376 [groupby] Elapsed: 1.03099989891 [loop in] Elapsed: 1.85900020599 Question&Answers:os...

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

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bash - Shell script read missing last line

I have an ... odd issue with a bash shell script that I was hoping to get some insight on. My team ... especially the first one, would be very much appreciated. Question&Answers:os...

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

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101 views

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c++ - WChars, Encodings, Standards and Portability

The following may not qualify as a SO question; if it is out of bounds, please feel free to tell me to go ... of "character" in the first place. Caveat emptor. Question&Answers:os...

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

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288 views

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excel - How do I declare a global variable in VBA?

I wrote the following code: Function find_results_idle() Public iRaw As Integer Public iColumn As Integer iRaw = 1 ... to do to create the global variable? Question&Answers:os...

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

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138 views

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How to hook into the Power button in Android?

On an Android device, where the only buttons are the volume buttons and a power button, I want to make the app ... button (long and short). How is this done? Question&Answers:os...

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

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header - C++ #include guards

SOLVED What really helped me was that I could #include headers in the .cpp file with out causing the redefined error. ... fine. I'm very grateful for any help. Question&Answers:os...

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

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136 views

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sql - How to split the name string in mysql?

How to split the name string in mysql ? E.g.: name ----- Sachin ramesh tendulkar Rahul dravid Split the name ... ---------- sachin ramesh tendulkar rahul dravid Question&Answers:os...

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

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110 views

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javascript - How to sort 2 dimensional array by column value?

Can any one help me sort a 2 dimensional Array in JavaScript? It will have data in the following format: [ ... So basically, sorting by the first column. Cheers Question&Answers:os...

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

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371 views

1 answer

c# - What is the difference between a regular string and a verbatim string?

I have a trial version of ReSharper and it always suggests that I switch regular strings to verbatim strings. What is the difference? Question&Answers:os...

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

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457 views

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r - Error: unexpected symbol/input/string constant/numeric constant/SPECIAL in my code

I received one of these errors. Error: unexpected symbol in "<my code>" Error: unexpected input in "<my code>" ... " else ## Error: unexpected 'else' in "else" Question&Answers:os...

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

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floating point - How to deal with big numbers in javascript

This question already has answers here: Question&Answers:os...

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

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202 views

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Python subprocess get children's output to file and terminal?

I'm running a script that executes a number of executables by using subprocess.call(cmdArgs,stdout=outf, stderr ... written to the files and terminal together? Question&Answers:os...

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

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94 views

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javascript - Selecting null: what is the reason behind selectAll(null) in D3?

I've seen some D3 codes with a pattern like this for appending elements: var circles = svg.selectAll( ... I wrote in the extinct StackOverflow Documentation. Question&Answers:os...

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

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239 views

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python - pip how to remove incorrectly installed package with a leading dash: "-pkgname"

typing pip freeze I noticed the following warning on top of the list: WARNING: Could not parse requirement: - ... it safe (and sufficient) to remove them? Question&Answers:os...

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

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