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[……]
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
Before，I have been so install and use pip on the macOS：
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sudo easy_install pip3 pip3 install my_package |
later，This method is ineffective，Become such：
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curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py python get-pip.py pip install my_package |
Finally one day，I need to update it prompted pip，then：
[cray[……]
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[……]
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[……]
Do the soft keyboard on a mobile device，So how to handle user clicks position，It is the first problem you encounter，in this problem，I have come a long way。
I touch a logical development since input method pocketed roughly classified into three stages，Now were Laijiangjiang design ideas，I hope this can help you。
Obviously，For a beginner，There's nothing better use of the control system，Full-featured[……]
In the development off the grid when the input method macOS，I encountered a problem of a more wonderful，This problem has plagued me now - the time when some places need to display a row of vertically centered text，How to make these characters real "center"?
At first glance this seems to make much sense，Well ...... like vertical center，On macOS [crayon-662c2974d42819[……]
When developed using Swift input pocketed，I met a very interesting question -Deduplication。
All to known，Candidate input method in the calculation will always be out there may be a duplicate options (such as code table and have a word in the lexicon，They may be different coding，But the word is the same and the like)，This time you need to re，But while keeping the same order of candidates。
If you go online to find，Then[……]
Two years ago，I wrote an article entitled "ios VoiceOver support for visually impaired users"Articles，Inside describes how iOS end of the necessary support for VoiceOver，Then I developed a macOS input terminal pocketed，But unfortunately due macOS own system bug，Third-party input method can not obtain focus VoiceOver (mainly[……]