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C# 4.0: Can I use a TimeSpan as an optional parameter with a default value?
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Slight nit-pick: Calling a static method doesn't fit in any of the list. TimeSpan can fit the last one on this list default(TimeSpan) is valid.
– CodesInChaos
Aug 8 '11 at 21:43
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Import file size limit in PHPMyAdmin
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Find the file called: php.ini on your server and follow below steps
With apache2 and php5 installed you need to make three changes in the php.ini file. First open the file for editing, e.g.:
sudo gedit /etc/php5/apache2/php.ini
OR
sud...
How to convert string representation of list to a list?
... as it simply runs whatever python is in the string. So if someone puts a call to delete everything in there, it happily will.
– Paul Kenjora
Nov 18 '17 at 21:15
17
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Why doesn't indexOf work on an array IE8?
...her cases such as IE, it'll add .indexOf() in the case it's missing... basically IE8 or below at this point.
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How to run Unix shell script from Java code?
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Is it good practice to call scripts from JAVA? Any performance issues?
– kautuksahni
Sep 18 '17 at 5:59
1
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what is the difference between a portlet and a servlet?
...only through the portal page
which holds the portlet.
Portlets can be provided with controls to manipulate its window states
or portlet modes.
Multiple instances of a single portlet can be placed onto the same
page.
Portlets support persistent configuration and customization, profile
information....
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...pecially since your data are already factored, you can use complete from "tidyr" to get what you might be looking for:
library(tidyr)
df %>%
group_by(b) %>%
summarise(count_a=length(a)) %>%
complete(b)
# Source: local data frame [3 x 2]
#
# b count_a
# (fctr) (int)
# 1 ...
How to version control a record in a database
...rrent record, you select the one where endDate is null.
This is sometimes called a type 2 Slowly Changing Dimension.
See also TupleVersioning
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How do I parse a string to a float or int?
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@Emile: I wouldn't call "2e-3" an "extreme case". This answer is just broken.
– jchl
How to explain dependency injection to a 5-year-old? [closed]
... knows, rather the object is configured by higher level logic, and then it calls components that it didn't have built-in foreknowledge of. The idea is to make the object more of a component and less of an application, relocating configuration tasks at a higher level. This makes the object more likel...