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python - How to create a large pandas dataframe from an sql query without running out of memory?

I have trouble querying a table of > 5 million records from MS SQL Server database. I want to select all of ... * query. Surely there is a simpler approach. Question&Answers:os...

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

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.net - Custom cursor in WPF?

I want to use an image or icon as a custom cursor in WPF app. What's the best 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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class - How to return a value from __init__ in Python?

I have a class with an __init__ function. How can I return an integer value from this function when an object ... function doesn't reflect in other function ?? Question&Answers:os...

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

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python - Replacing Numpy elements if condition is met

I have a large numpy array that I need to manipulate so that each element is changed to either a 1 or 0 if ... there a numpy function that would speed this up? Question&Answers:os...

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

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Authenticated HTTP proxy with Java

How can I configure the username and password to authenticate a http proxy server using Java? I just found the ... configure my app to use the proxy server? Question&Answers:os...

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

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constants - Can I get CONST's defined on a PHP class?

I have several CONST's defined on some classes, and want to get a list of them. For example: class ... Last Name', 'Profile::LABEL_COMPANY_NAME'=>'Company') Question&Answers:os...

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

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Deleting an object in java?

I want to delete an object I created, (a oval which follows you), but how would I do this? delete follower1; didn ... ; player.health = player.health - 10; } } Question&Answers:os...

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

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ios - UIButton action in table view cell

I am trying to run an action for a button being pressed within a table view cell. The following code is in my table ... "] = "yes" gameScore.save() } } } Question&Answers:os...

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

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Read file line by line in PowerShell

I want to read a file line by line in PowerShell. Specifically, I want to loop through the file, store ... file.txt Not much documentation on PowerShell loops. Question&Answers:os...

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

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python - Translate every element in numpy array according to key

I am trying to translate every element of a numpy.array according to a given key: For example: a = np.array ... loop In [22]: %timeit loop_translate(a, my_dict) Question&Answers:os...

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

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MySQL find_in_set with multiple search string

I find that find_in_set only search by a single string :- find_in_set('a', 'a,b,c,d') In the above example, 'a' ... ,b,c,d') Is there any other way than this? Question&Answers:os...

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

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Check if a process is running or not on Windows with Python

I am trying to create a python script which I will later run as a service. Now I want to run a particular ... I am using python 2.7 and iTunes COM interface. Question&Answers:os...

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

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scripting - How do I run git rebase --interactive in non-interactive manner?

Is it possible to do following? Make git rebase --interactive to just output standard boilerplate to a file, ... commits in Git non-interactively for example. Question&Answers:os...

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

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c# - Casting a result to float in method returning float changes result

Why does this code print False in .NET 4? It seems some unexpected behavior is being caused by the explicit cast. ... now fails after the upgrade to .NET 4. Question&Answers:os...

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

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.net - Calling 32bit Code from 64bit Process

I have an application that we're trying to migrate to 64bit from 32bit. It's .NET, compiled using the x64 ... call the 32bit DLLs from a 64bit CLR process? Question&Answers:os...

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

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python - Get class that defined method

How can I get the class that defined a method in Python? I'd want the following example to ... = BarClass() print get_class_that_defined_method(bar.foo_method) Question&Answers:os...

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

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How to add a TextView to a LinearLayout dynamically in Android?

I try to add a TextView to a LinearLayout dynamically such as in the following code, but it doesn't appear ... .m_vwJokeLayout.addView(tv); What's the problem? Question&Answers:os...

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

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python - Split a generator into chunks without pre-walking it

(This question is related to this one and this one, but those are pre-walking the generator, which is ... exhausted in the chunks function, without walking it? Question&Answers:os...

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

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257 views

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visual studio 2010 - Cannot find vcvarsall.bat when running a Python script

I am working on Vista, and using Python 2.6.4. I am using a software that utilizes a Python script, but ... the registry or in the script? Or somewhere else? Question&Answers:os...

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

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c# - Why implement interface explicitly?

So, what exactly is a good use case for implementing an interface explicitly? Is it only so that people ... at all those methods/properties in intellisense? Question&Answers:os...

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

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271 views

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asp.net - How to pass multiple parameters in a querystring

I have three values which I have to pass as parameters for e.g., strID, strName and strDate. I want ... ).Can anybody provide me with the correct querystring? Question&Answers:os...

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

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html - When is localStorage cleared?

How long can I expect data to be kept in localStorage. How long will an average user's localStorage data ... re-install? Is this consistent across browsers? Question&Answers:os...

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

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javascript - How to copy text from a div to clipboard

Here is my code for when the user clicks on this button: <button id="button1">Click to copy</button> How do I copy ... div? <div id="div1">Text To Copy</div> Question&Answers:os...

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

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rdd - What does "Stage Skipped" mean in Apache Spark web UI?

From my Spark UI. What does it mean by skipped? Question&Answers:os...

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

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android - Change Locale not work after migrate to Androidx

I have an old project that supports multi-languages. I want to upgrade support library and target platform, ... .getIdentifier not work and always return 0! Question&Answers:os...

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

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193 views

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java - Invoking a static method using reflection

I want to invoke the main method which is static. I got the object of type Class, but I am not able to ... and also not able to invoke the static method main. Question&Answers:os...

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

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185 views

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Calling PHP functions within HEREDOC strings

In PHP, the HEREDOC string declarations are really useful for outputting a block of html. You can have it parse ... though, so I'm looking into templates now. Question&Answers:os...

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

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412 views

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c# - How to Count Duplicates in List with LINQ

I have a list of items John ID Matt ID John ID Scott ID Matt ID John ID Lucas ID I want to shove them ... : 6 hello world times 234234 2 Hello World. 23432432 Question&Answers:os...

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

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