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Accessing bash command line args $@ vs $*
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Scientifically speaking, tomatoes are fruits.
– Randy
Mar 18 '19 at 19:17
1
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What is the difference between old style and new style classes in Python?
...(x) is always <type
'instance'>.
This reflects the fact that all old-style instances, independently of
their class, are implemented with a single built-in type, called
instance.
New-style classes were introduced in Python 2.2 to unify the concepts of class and type.
A new-s...
What are the lesser known but useful data structures?
There are some data structures around that are really useful but are unknown to most programmers. Which ones are they?
83 A...
How to access session variables from any class in ASP.NET?
... }
}
This class stores one instance of itself in the ASP.NET session and allows you to access your session properties in a type-safe way from any class, e.g like this:
int loginId = MySession.Current.LoginId;
string property1 = MySession.Current.Property1;
MySession.Current.Property1 = newValue;...
How to check if a variable exists in a FreeMarker template?
...ich values are supplied when the template is processed. I want to conditionally include part of the template if the userName variable is supplied, something like:
...
Should I use the Reply-To header when sending emails as a service to others?
Suppose we have an application that acts as a middleman, allowing Company A to send reports to their customers.
3 Answers
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Assign multiple columns using := in data.table, by group
...t(dim(get(objectName))),by=objectName]. Trouble is that as.list has call overhead and also copies the small vector. If efficiency is a problem as number of groups rises then please let us know.
– Matt Dowle
May 21 '14 at 11:49
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Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的tag可定制的地方很少。
Rule：
加载规则，默认的是，All pages规则，可以自己添加，以和Tag关联，决定在什么条件下，加载指定的tag。
Macro：
宏，预定义的名称键值对，默认有：event，referrer，url三个宏，宏可以应用在rule和ta...
What is the difference between object keys with quotes and without quotes?
...xchange format does require double quotes around identifiers (and does not allow single quotes).
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Django URL Redirect
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You can try the Class Based View called RedirectView
from django.views.generic.base import RedirectView
urlpatterns = patterns('',
url(r'^$', 'macmonster.views.home'),
#url(r'^macmon_home$', 'macmonster.views.home'),
url(r'^macmon_output/$', 'ma...