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Windows x64编程中寄存器的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t;
LPTSTR lpFileTextW;
WORD wSignature;
DWORD dwReadSize;
hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
... ...
}
CreateFile() 的参数有 7 个,那么看看 VC 是怎样安排...
What is the difference between Google App Engine and Google Compute Engine?
... will automatically create more instances to handle the increased volume.
Read more about App Engine
Compute Engine is an Infrastructure-as-a-Service. You have to create and configure your own virtual machine instances. It gives you more flexibility and generally costs much less than App Engine. T...
Typedef function pointer?
...n given above.
The difficulty lies in the pointer to functions syntax and readability in C and C++, and the typedef can improve the readability of such declarations. However, the syntax is appropriate, since functions - unlike other simpler types - may have a return value and parameters, thus the s...
What is meant with “const” at end of function declaration? [duplicate]
...or this class function to change a member variable of the class. However, reading of a class variables is okay inside of the function, but writing inside of this function will generate a compiler error.
Another way of thinking about such "const function" is by viewing a class function as a norma...
Importing a CSV file into a sqlite3 database table using Python
...'data.csv','r') as fin: # `with` statement available in 2.5+
# csv.DictReader uses first line in file for column headings by default
dr = csv.DictReader(fin) # comma is default delimiter
to_db = [(i['col1'], i['col2']) for i in dr]
cur.executemany("INSERT INTO t (col1, col2) VALUES (?, ...
Is it possible to read the value of a annotation in java?
this is my code:
9 Answers
9
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How to read environment variables in Scala
In Java, reading environment variables is done with System.getenv() .
6 Answers
6
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...stribution across the sets, because each memory address is as likely to be read (I said ideally).
It's clear that overlaps can occur. In case of a cache miss, the memory is read in the cache and the old value is replaced. Remember each set has a number of lines, out of which the least recently used...
Accessing inactive union member and undefined behavior?
...11
6.5.2.3 Structure and union members
95) If the member used to read the contents of a union object is not the same as the member last used to
store a value in the object, the appropriate part of the object representation of the value is reinterpreted
as an object representation in th...
How get integer value from a enum in Rails?
...
Rails < 5
Another way would be to use read_attribute():
model = Model.find(123)
model.read_attribute('sale_info')
Rails >= 5
You can use read_attribute_before_type_cast
model.read_attribute_before_type_cast(:sale_info)
=> 1
...
