Categories
Python

clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9

Normal,You will encounter this error when installing a Python package,This package must be a package containing C ++ code。

This is due to incompatibility after macOS update,In General,The maintainer of this package should already be compatible with this particular situation:

So on macOS[……]

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Categories
Python

Python detects its own memory footprint in real time

Recently doing text statistics,Implemented in Python,Encountered an interesting problem-how to save statistical results。

Writing directly into memory is really impossible,Memory exhausted after ten hours,The program was forced to close。If you write directly to the database,Each write is too slow,It's been more than ten hours,If you go on like this, you will have to count on the week,Not a solution。

At last,I thought of a solution that does both[……]

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Categories
Swift

iOS correctly set the status bar style color

When developing iOS apps,Many applications need to set the color of the iOS system status bar according to the current App content color,Black or white-especially on iOS 13 After the system supports the black mode。

Normal,Others will tell you to do this:

But this triggers a warning:[crayon[……]

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Categories
Python Swift

Swift Python Json data exchange signature

It has been a very popular self-signed certificate for HTTPS decryption,Then there are a lot of people realize crack of App by modifying Apple's internal purchase receipt。In fact Verified Purchase should be connected to the server App,Server to communicate with Apple's servers,The results are then sent to the App - but a lot of developers (including individual developers and corporate developers) do not bother to go to a special server maintenance,Therefore, the direct use of App and Apple[……]

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Categories
Swift

Swift Debug EXC_BAD_ACCESS in AppDelegate

 

Many people will encounter in the development EXC_BAD_ACCESS ,I'm sorry,This time, Xcode does not give any detailed solutions。

usually,This is due to a memory error caused。In simple terms it is that you create an object A,But in the later time of the visit,A memory in this area have been moved to do the system he used,For example, put the object B here - your[……]

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Categories
Swift

Swift strftime use quick format date and time

Processing time and date software development is a very common operation,Almost all programming languages ​​provide a corresponding API to facilitate the development of the date and time to process,Swift is no exception,such as DateFormatter ,You can use it any Date

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Categories
Python

Proper use PIP to install Python package to avoid TypeError: ‘module’ object is not callable

Before,I have been so install and use pip on the macOS:

later,This method is ineffective,Become such:

Finally one day,I need to update it prompted pip,then:
[cray[……]

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Categories
Swift

String.count vs NSString.length

generally speaking,Swift inner String And it is NSString Bridged,For example, I have written String NSString and what difference?,In short we are here to discuss major,String[……]

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Python R0uter Input Tool

Changjei generation and accelerated code table from cns11643 Chinese official standard full flash

Has long been,I'm rightCJandExpressThis is useful advice ...... circulated on the Internet version of the code table many fellow sufferers,But the name called "CJ",By contrast and Wubi,Anyhow, also points a stroke 86 and 98,Then there is little new in the new century, and so on,But no Changjei,No matter what version of the CJ,Called "CJ"。

This is very embarrassing,Changjei code table is different for each person with,But not the same where,He did not know。

total[……]

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