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Garbage collector in Android
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@ThomasPornin - On the other hand, as an application programmer, you know something that the OS does not know: times at which your app is now going to make a major change in how it uses memory, and that it would be less disruptive to the user experience to take a pause ...
What is the easiest way to duplicate an activerecord record?
... suppose you have a task scheduled for a certain date and you want to duplicate it to another date. The actual attributes of the task aren't important, so:
old_task = Task.find(task_id)
new_task = Task.new(old_task.attributes.merge({:scheduled_on => some_new_date}))
will create a new task wit...
Homebrew: List only installed top level formulas
...ive us a list of formulae which are not dependencies of other formulae:
$ cat brew-root-formulae.sh
#!/bin/sh
brew deps --installed | \
awk -F'[: ]+' \
'{
packages[$1]++
for (i = 2; i <= NF; i++)
dependencies[$i]++
}
END {
for (package in pack...
External VS2013 build error “error MSB4019: The imported project was not found”
...>
</PropertyGroup>
...
<Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
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Calling startActivity() from outside of an Activity?
... Beware, you need this on Android 9+ also, see this answer for clarifications
– Vadim Kotov
Jan 22 at 9:15
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Sorting multiple keys with Unix sort
...2,2,b,22,Ga
2,2,c,19,Ga
2,2,c,19,Gb,hi
2,2,c,19,Gb,hj
2,3,a,9,C
~/test>cat sort.csv
2,3,a,9,C
2,2,b,20,F
2,2,c,19,Gb,hj
2,2,c,19,Gb,hi
2,2,c,19,Ga
2,2,b,22,Ga
1,10,b,22,Ga
Note the -k1,1n means numeric starting at column 1 and ending at column 1.
If I had done below, it would have concatenated...
contenteditable change events
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what is this delete event?
– James Cat
Nov 10 '17 at 11:30
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How to delete a stash created with git stash create?
... is 2 weeks later).
Older stashes are saved in the refs/stash reflog (try cat .git/logs/refs/stash), and can be deleted with git stash drop stash@{n}, where n is the number shown by git stash list.
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How to get the parents of a merge commit in git?
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git cat-file -p 3706454 is the same but even shorter :)
– sabgenton
Nov 13 '13 at 4:58
1
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How do I fetch lines before/after the grep result in bash?
... trailing output context.
grep -i "my_regex" -C 10
Example
user@box:~$ cat out
line 1
line 2
line 3
line 4
line 5 my_regex
line 6
line 7
line 8
line 9
user@box:~$
Normal grep
user@box:~$ grep my_regex out
line 5 my_regex
user@box:~$
Grep exact matching lines and 2 lines after
user@box:~...