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How to compare times in Python?
...use for comparison without taking the date into account:
>>> this_morning = datetime.datetime(2009, 12, 2, 9, 30)
>>> last_night = datetime.datetime(2009, 12, 1, 20, 0)
>>> this_morning.time() < last_night.time()
True
...
Initializing a static std::map in C++
...namespace std;
using namespace boost::assign;
map<int, char> m = map_list_of (1, 'a') (3, 'b') (5, 'c') (7, 'd');
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Get the (last part of) current directory name in C#
...the last part of current directory, for example from /Users/smcho/filegen_from_directory/AIRPassthrough , I need to get AIRPassthrough .
...
Getting the name of a variable as a string
...alue == {}
foo.value['bar'] = 2
For list comprehension part, you can do:
n_jobs = Wrapper(<original_value>)
users = Wrapper(<original_value>)
queues = Wrapper(<original_value>)
priorities = Wrapper(<original_value>)
list_of_dicts = [n_jobs, users, queues, priorities]
co...
iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...机器（intel已经可以装lion了，此处不再讨论），应用darwin_snow_legacy.iso，进行引导，之后一路安装直至成功；
（2）安装完成后，装VMTools实现共享，以及声卡驱动；（3）之后要对系统进行升级（我是从10.6升级至10.6.7），升...
How to check if object (variable) is defined in R?
...:(which(search() == "tools:rstudio") - 1L),
function(pp) exists(_object_name_, where = pp, inherits = FALSE)))
Compare replacing _object_name_ with "data.table" (TRUE) vs. "var" (FALSE)
(of course, if you're not on RStudio, I think the first automatically attached environment is "packa...
Increasing client_max_body_size in Nginx conf on AWS Elastic Beanstalk
...y.conf setting the max body size to whatever size you would prefer:
client_max_body_size 50M;
Create the Nginx config file directly
After much research and hours of working with the wonderful AWS support team, I created a config file inside of .ebextensions to supplement the nginx config. This c...
How to check if an element is in an array
...ed and work with the first such element,
Then an alternative to contains(_:) as blueprinted Sequence is to first(where:) of Sequence:
let elements = [1, 2, 3, 4, 5]
if let firstSuchElement = elements.first(where: { $0 == 4 }) {
print(firstSuchElement) // 4
// ...
}
In this contrived ex...
get size of json object
... check the size i.e. like that:
var data = {one : 1, two : 2, three : 3};
_.size(data);
//=> 3
_.keys(data);
//=> ["one", "two", "three"]
_.keys(data).length;
//=> 3
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Deleting rows with MySQL LEFT JOIN
...g "table as", then specify it to delete.
In the example i delete all table_1 rows which are do not exists in table_2.
DELETE t1 FROM `table_1` t1 LEFT JOIN `table_2` t2 ON t1.`id` = t2.`id` WHERE t2.`id` IS NULL
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