大约有 15,220 项符合查询结果（耗时：0.0176秒） [XML]
MongoDB Many-to-Many Association
...ns using MongoDB, Redis, and other NoSQL data stores by optimizing for the read use cases, while being considerate of the atomic write operations that need to be supported by the write use cases.
For instance, the uses of a "Users in Roles" domain follow:
Role - Create, Read, Update, Delete, List...
Hash and salt passwords in C#
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I've been reading that hashing functions like SHA256 weren't really intended for use with storing passwords:
https://patrickmn.com/security/storing-passwords-securely/#notpasswordhashes
Instead adaptive key derivation functions like P...
What is the meaning of the term “thread-safe”?
Does it mean that two threads can't change the underlying data simultaneously? Or does it mean that the given code segment will run with predictable results when multiple threads are executing that code segment?
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svn cleanup: sqlite: database disk image is malformed
...natively
You may be able to dump the contents of the database that can be read to a backup file, then slurp it back into an new database file:
sqlite3 .svn/wc.db
sqlite> .mode insert
sqlite> .output dump_all.sql
sqlite> .dump
sqlite> .exit
mv .svn/wc.db .svn/wc-corrupt.db
sqlite3 .sv...
How to erase the file contents of text file in Python?
...n python:
open('file.txt', 'w').close()
Or alternatively, if you have already an opened file:
f = open('file.txt', 'r+')
f.truncate(0) # need '0' when using r+
In C++, you could use something similar.
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Design patterns to avoid [closed]
...solutions. However it is instead much more interesting for a programmer to read up on design techniques and principles that lay the foundation for most of the patterns. In fact one of my favorite books on 'design patterns' stresses this by reiterating on what principles are applicable on the pattern...
Open and write data to text file using Bash?
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Explanation is never necessary when you already know the answer. To me the above code is not helpful due to lack of details.
– Søren Ullidtz
Jan 3 at 8:53
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What is the difference between a thread and a fiber?
What is the difference between a thread and a fiber? I've heard of fibers from ruby and I've read heard they're available in other languages, could somebody explain to me in simple terms what is the difference between a thread and a fiber.
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Pythonic way to check if a file exists? [duplicate]
...en(fd, 'w')
This should open your file for writing if it doesn't exist already, and return a file-object. If it does exists, it will print "Ooops" and return None (untested, and based solely on reading the python documentation, so might not be 100% correct).
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How to see query history in SQL Server Management Studio
...e queries executed in SSMS by default. There are several options though.
Reading transaction log – this is not an easy thing to do because its in proprietary format. However if you need to see queries that were executed historically (except SELECT) this is the only way.
You can use third party...