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Vim delete blank lines
... Thanks soulmerge. This is my favorite answer, since it actually explains what the :g command does.
– Tim Swast
Aug 15 '11 at 19:03
4
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How do I run two commands in one line in Windows CMD?
...XP Professional Product Documentation, Command shell overview
Also: An A-Z Index of Windows CMD commands
Using multiple commands and conditional processing symbols
You can run multiple commands from a single command line or script using conditional processing symbols. When you run multiple...
How do I install cygwin components from the command line?
... the Cygwin package similar to apt-get on Debian or yum on redhat that allows me to install components from the command line?
...
Django rest framework, use different serializers in the same ModelViewSet
... like to provide two different serializers and yet be able to benefit from all the facilities of ModelViewSet :
6 Answers
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How can I keep Bootstrap popovers alive while being hovered?
...
Test with code snippet below:
Small modification (From the solution provided by vikas) to suit my use case.
Open popover on hover event for the popover button
Keep popover open when hovering over the popover box
Close popover on mouseleave for either the ...
Javascript “this” pointer within nested function
...
In JavaScript the this object is really based on how you make your function calls.
In general there are three ways to setup the this object:
someThing.someFunction(arg1, arg2, argN)
someFunction.call(someThing, arg1, arg2, argN)
someFunction.apply(someThing...
Append value to empty vector in R?
... vector every time it appends.
The most efficient way to append is to use index. Note that this time I let it iterate 1e7 times, but it's still much faster than c.
a=numeric(0)
system.time(
{
while(length(a)<1e7){
a[length(a)+1]=pi
}
}
)
# user system elapsed
# 5.71 0.39 ...
Calculate last day of month in JavaScript
...wing binary logic.
A quick lesson in binary months:
If you interpret the index of the desired months (Jan = 1) in binary you will notice that months with 31 days either have bit 3 clear and bit 0 set, or bit 3 set and bit 0 clear.
Jan = 1 = 0001 : 31 days
Feb = 2 = 0010
Mar = 3 = 0011 : 31 day...
Python element-wise tuple operations like sum
...
Using all built-ins..
tuple(map(sum, zip(a, b)))
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Linq to Sql: Multiple left outer joins
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This may be cleaner (you dont need all the into statements):
var query =
from order in dc.Orders
from vendor
in dc.Vendors
.Where(v => v.Id == order.VendorId)
.DefaultIfEmpty()
from status
in dc.Status
.Where(...