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Fastest way to reset every value of std::vector to 0
...ATIONS = 100000;
const size_t TEST_ARRAY_SIZE = 10000;
int main(int argc, char** argv) {
std::vector<int> v(TEST_ARRAY_SIZE, 0);
for(size_t i = 0; i < TEST_ITERATIONS; ++i) {
#if TEST_METHOD == 1
memset(&v[0], 0, v.size() * sizeof v[0]);
#elif TEST_METHOD == 2
...
Best way to convert string to bytes in Python 3?
There appear to be two different ways to convert a string to bytes, as seen in the answers to TypeError: 'str' does not support the buffer interface
...
Difference between local and global indexes in DynamoDB
...OBAL_RANGE_US_TS)
@DynamoDBAttribute(attributeName = PROPERTY_USER)
public String getUser() {
return user;
}
For range index associated to the global index:
@DynamoDBIndexRangeKey(globalSecondaryIndexName = INDEX_GLOBAL_RANGE_US_TS)
@DynamoDBAttribute(attributeName = PROPERTY_TIMESTAMP)
public...
How to list the contents of a package using YUM?
...s taken with spacing):
Loaded plugins: fastestmirror
base | 3.6 kB 00:00
extras | 3.4 kB 00:00
updates | 3.4 kB 00:00
(1/4): extras/7/x86_64/primary_db | 166 kB 00:00
(2/4): base/7/x86_64/group_gz | 155 kB 00:00
(3/4): updates/7/x86_64/primary_db | 9.1 MB 00:04
(4/4): base/7/x86_64/primary_db...
What characters are allowed in an email address?
...cters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a backslash or double-quote must be preceded by a backslash);
comments are allowed with parentheses at either end of the local-part; e.g. john.smith(comment)@exa...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
... 得到easy_request_t中成员request_list_node的指针
(type *)( (char *)__mptr - offsetof(type,member) );}) // 指针减去 request_list_node成员在easy_request_t中的偏移就得到了easy_request_t的首地址
其中offsetof(type,member)是得到member这个这个...
Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
... is a history in C of doing things like:
while (*a++ = *b++);
to copy a string, perhaps this is the source of the excessive trickery he is referring to.
And there's always the question of what
++i = i++;
or
i = i++ + ++i;
actually do. It's defined in some languages, and in other's ther...
Extracting an attribute value with beautifulsoup
... Would you mind if I edit this to follow PEP 8 and use the more modern string formatting methods?
– AMC
Mar 9 at 19:35
...
How do I parse a string to a float or int?
In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
...
Difference between getAttribute() and getParameter()
...erver. For example http://example.com/servlet?parameter=1. Can only return String
getAttribute() is for server-side usage only - you fill the request with attributes that you can use within the same request. For example - you set an attribute in a servlet, and read it from a JSP. Can be used for any...