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Find files that contain BOM headers under Linux and clear BOM header commands 2014-08-16 12:30:50Classification: System operation and MaintenanceLocate the file that contains the BOM header, as follows:Click ( here) to collapse or open Grep-r-i-l $ ' ^\xef\xbb\xbf '. \XEF\XBB\XBF is a 16 binary representation of the UTF8 BOMThis command removes the BOM header from the current directory and all subdi

Now I am using Kotlin to develop Android for 12 reasons (KAD 30) and kotlinandroid By Antonio Leiva Time: Jul, 11,201 7 Link: https://antonioleiva.com/reasons-kotlin-android/ This group of articles has reached the end, and they are very practical. Today I want to talk about why I think it is very interesting to learn Kotlin. Although Kotlin is now an officially supported programming language for develop

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More than 30 mysql database optimization methods, with 10 million-level database records easily solved, mysql database 1. To optimize the query, try to avoid full table scanning. First, consider creating an index on the columns involved in where and order. 2. Try to avoid null value determination on the field in the where clause. Otherwise, the engine will discard the index and perform full table scan, SQL

less than the arguments of the times)The length of the arguments generated internally by the 3 function declaration refers to the number of actual arguments. Not the number of formal parameters4 variable elevation explains the reason for the left: variables in the function scope override the upper scope Variable. But: only the promotion variable declaration does not raise the Assignment. This means: the following var a= "3" will overwrite var a = 2; But only var A is placed at the top of the fu

memory into trunk blocks of several specific lengths according to a predefined size, and to classify trunk blocks of the same length into slab groups, and the size of the slab groupIncrement according to the argument of a growth factor. When Memcached accepts a key-value pair storage request sent to the front-end client application, it first calculates if the data block has enough size to accommodate the record, if it is not enough to apply to the system, if the application limit is reached, us

0 reply content: read the description and the work. On the phone. Come on, Lucky 13 k, bad luck 8 k. Beijing. Of course, you are not very good at big companies unless you build jobs. Refer to other questions for self-testing on the front-end interview questions. I am building 8-12 k js 10-13 k pre-tax primary level. ------------- I changed my computer and looked at the code link .. Well .. Let me modif

. Don't work for money, but let the money work for you;5. blindly follow the trend, and the cloud is everywhere. People do what I do;6. Xiaofu is safe, not enterprising, and is always happy;7. admit errors rather than conceal them;8. be down-to-earth, rather than thinking about it;9. too ambitious, not confident;10. Repeated job hopping is not advisable;11. Easy-to-use. Chapter 2: 12-minute effort

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