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How do I get the list of keys in a Dictionary?
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@MartinCapodici then you should usually expect the iterator to break and refuse to continue
– Marc Gravell♦
Mar 10 '16 at 22:32
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Change SQLite database mode to read-write
...e/she want to compress files in order to obtain space if the user says yes then the read-only database issue might arise.
– Nandostyle
Jan 16 '19 at 2:41
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What does the property “Nonatomic” mean?
...y, if you say nonatomic, and you generate the accessors using @synthesize, then if multiple threads try to change/read the property at once, badness can happen. You can get partially-written values or over-released/retained objects, which can easily lead to crashes. (This is potentially a lot faster...
Conversion of System.Array to List
...t an Array.
You have to cast the Array to what it actually is, an int[], then you can use ToList:
List<int> intList = ((int[])ints).ToList();
Note that Enumerable.ToList calls the list constructor that first checks if the argument can be casted to ICollection<T>(which an array impl...
How to change time in DateTime?
...inutes,
seconds,
milliseconds,
dateTime.Kind);
}
Then call:
DateTime myDate = DateTime.Now.ChangeTime(10,10,10,0);
It's important to note that this extension returns a new date object, so you can't do this:
DateTime myDate = DateTime.Now;
myDate.ChangeTime(10,10,10,0);
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How to check if string input is a number? [duplicate]
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Simply try converting it to an int and then bailing out if it doesn't work.
try:
val = int(userInput)
except ValueError:
print("That's not an int!")
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Can't update Macports (with Mac OS X Mavericks)
...ing to the license is sometimes necessary via "sudo xcodebuild -license")
Then upgrade the ports:
sudo port -v selfupdate
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“Diff” an image using ImageMagick
...for some reason, need a higher resolution than the default one (72 dpi) -- then just add an appropriate -density parameter:
compare -density 300 image1 image2 -compose src diff.jpeg
Illustrated examples
Here are a few illustrations of results for variations of the above command. Note: the two...
Restore LogCat window within Android Studio
...eme top right of the log cat section; select floating mode. Confusingly it then "appears to be docked" still ... just grab the bar and move it around. (If you're used to Mac, it's a little confusing.) (Android Studio is awesome on Mac eh??)
– Fattie
May 20 '14...
Installing PG gem on OS X - failure to build native extension
...tu try to install following lib file
sudo apt-get install libpq-dev
and then
gem install pg
worked for me.
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