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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
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The ContentList's Set method will not get called when you change a value inside the collection, instead you should be looking out for the CollectionChanged event firing.
public class CollectionViewModel : ViewModelBase
{
public ObservableCollection<E...
Negative matching using grep (match lines that do not contain foo)
...g foo:
awk '!/foo/'
Lines containing neither foo nor bar:
awk '!/foo/ && !/bar/'
Lines containing neither foo nor bar which contain either foo2 or bar2:
awk '!/foo/ && !/bar/ && (/foo2/ || /bar2/)'
And so on.
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Check whether a value is a number in JavaScript or jQuery [duplicate]
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function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
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Error in if/while (condition) {: missing Value where TRUE/FALSE needed
...d
This can happen accidentally as the results of calculations:
if(TRUE && sqrt(-1)) {}
## Error in if (TRUE && sqrt(-1)) { : missing value where TRUE/FALSE needed
To test whether an object is missing use is.na(x) rather than x == NA.
See also the related errors:
Error in i...
How can I put the current running linux process in background? [closed]
...cess with CTRL+Z then use the command bg to resume it in background. For example:
sleep 60
^Z #Suspend character shown after hitting CTRL+Z
[1]+ Stopped sleep 60 #Message showing stopped process info
bg #Resume current job (last job stopped)
More about job control and bg usage in bash manual p...
IoT & MQTT中文平台： [url]https://iot.dfrobot.com.cn/[/url] befa云...
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MCU&物联网:
就用这个函数，serviceuuid怎么填都不对，就是获取个广播数据不知道为什么还需要uuid
MCU&物联网:
你看看能搞定这一块吗？要是可以的话我就先买个离线版的，在...
How do I iterate through the files in a directory in Java?
I need to get a list of all the files in a directory, including files in all the sub-directories. What is the standard way to accomplish directory iteration with Java?
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How to specify more spaces for the delimiter using cut?
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Actually awk is exactly the tool you should be looking into:
ps axu | grep '[j]boss' | awk '{print $5}'
or you can ditch the grep altogether since awk knows about regular expressions:
ps axu | awk '/[j]boss/ {print $5}'
But...
Git Remote: Error: fatal: protocol error: bad line length character: Unab
...cting the output of that command from stdout to stderr (some_command 1>&2). After that, git pull worked again.
– Teemu Leisti
Mar 17 '14 at 21:01
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