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What is the maximum length of a Push Notification alert text?
...ms above that they were able to send messages with 1400 characters. My own testing with the new notification format showed that a message just 1 byte over the 256 byte limit was rejected. Given that the docs are very explicit on this point I suggest it is safer to use 256 regardless of what you may...
C++ - passing references to std::shared_ptr or boost::shared_ptr
...d is complete we can store the new previous message. All good. Here's some test code:
send_message(std::shared_ptr<std::string>(new std::string("Hi")));
send_message(previous_message);
And as expected, this prints Hi! twice.
Now along comes Mr Maintainer, who looks at the code and thinks: ...
How to get overall CPU usage (e.g. 57%) on Linux [closed]
...ts before copy-paste this or using this for any serious work. This was not tested nor used, it's an idea for people who do not want to install a utility or for something that works in any distribution. Some people think you can "apt-get install" anything.
NOTE: this is not the current CPU usage, b...
How to delete from a text file, all lines that contain a specific string?
...temp && mv temp file
Ruby (1.9+)
ruby -i.bak -ne 'print if not /test/' file
Perl
perl -ni.bak -e "print unless /pattern/" file
Shell (bash 3.2 and later)
while read -r line
do
[[ ! $line =~ pattern ]] && echo "$line"
done <file > o
mv o file
GNU grep
grep -v "patt...
How to detect which one of the defined font was used in a web page?
...tch
Gecko.
I took a pass at this problem and created Font Unstack, which tests each font in a stack and returns the first installed one only. It uses the trick that @MojoFilter mentions, but only returns the first one if multiple are installed. Though it does suffer from the weakness that @tlrobin...
Break a previous commit into multiple commits
...eset a8c4ab.
Here's a series of commands to show how it works:
mkdir git-test; cd git-test; git init
now add a file A
vi A
add this line:
one
git commit -am one
then add this line to A:
two
git commit -am two
then add this line to A:
three
git commit -am three
now the file A looks like...
Google Play on Android 4.0 emulator
...
Note: Vending.apk is called Phonesky.apk in latest releases
– Catalin Morosan
Sep 11 '12 at 8:44
9
...
Add new methods to a resource controller in Laravel
...why the custom route should go above the resource route ??? I've done some tests and seems to have no diference between putting above or below...
– Ricardo Vigatti
Jun 16 '16 at 14:21
...
How do I use a PriorityQueue?
...ounded.
Here's an example of a priority queue sorting by string length:
// Test.java
import java.util.Comparator;
import java.util.PriorityQueue;
public class Test {
public static void main(String[] args) {
Comparator<String> comparator = new StringLengthComparator();
Prio...
How to count TRUE values in a logical vector
...ome context on the "which is faster question", it's always easiest just to test yourself. I made the vector much larger for comparison:
z <- sample(c(TRUE,FALSE),1000000,rep=TRUE)
system.time(sum(z))
user system elapsed
0.03 0.00 0.03
system.time(length(z[z==TRUE]))
user syste...