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How can I delete all Git branches which have been merged?
...n merged? Is there an easy way to delete them all instead of deleting them one by one?
45 Answers
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Convert a Git folder to a submodule retrospectively?
...g a project of some kind, and after a while it becomes clear that some component of the project is actually useful as a standalone component (a library, perhaps). If you've had that idea from early on, then there's a fair chance that most of that code is in its own folder.
...
How to write a switch statement in Ruby
...
It is done using case in Ruby. Also see "Switch statement" on Wikipedia.
Quoted:
case n
when 0
puts 'You typed zero'
when 1, 9
puts 'n is a perfect square'
when 2
puts 'n is a prime number'
puts 'n is an even number'
when ...
static constructors in C++? I need to initialize private static objects
... thanks! though that's very annoying to have to do all that. One of the many "mistakes" C# and java learned from.
– Gordon Gustafson
Jul 28 '09 at 22:59
110
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AngularJs: How to check for changes in file input fields?
...our File</button>
<input type="file" style="display:none"
id="file" name='file' onchange="angular.element(this).scope().fileNameChanged(this)" />
</form>
</div>
instead of
<input type="file" style="display:none"
id="fil...
What are static factory methods?
...s to provide a "spare" connection, failing with an exception if there are none.
public class DbConnection{
private static final int MAX_CONNS = 100;
private static int totalConnections = 0;
private static Set<DbConnection> availableConnections = new HashSet<DbConnection>();
...
How to compare objects by multiple fields
...a of using a single Comparator. I don't think this answer is wrong, but anyone reading it should definitely check Steve Kuo answer below.
– Felipe Leão
Nov 13 '14 at 12:15
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Renaming a virtualenv folder without breaking it
...e | grep -v "^Binary file" | grep -i venv-name. In fact, I noticed that in one of my Django instances, a lot of the packages had the "path to Python sh-bang" in them.
– Kevin
May 23 '16 at 14:01
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Group by multiple columns in dplyr, using string vector input
...= names(data)[-3]
library(dplyr)
df1 <- data %>%
group_by_at(vars(one_of(columns))) %>%
summarize(Value = mean(value))
#compare plyr for reference
df2 <- plyr::ddply(data, columns, plyr::summarize, value=mean(value))
table(df1 == df2, useNA = 'ifany')
## TRUE
## 27
The output ...
What's the significance of Oct 12 1999? [closed]
...le on the ASP.NET Team. The dev who wrote THAT line of code, we think, is gone. We asked The Gu, and he wasn't sure.
Stefan Schackow, from the team, said, after speaking with Manu Vasandani:
"The ASP.NET developers were being
chased by a pack of feral ninjas on
fire and thus were under int...