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Is null check needed before calling instanceof?
...B b) {
// Overloaded version. Would cause reference ambiguity (compile error)
// if Test.test(null) was called without casting.
// So you need to call Test.test((A)null) or Test.test((B)null).
}
}
So Test.test((A)null) will print a instanceof A: false.)
P.S.: If you are hiring, pl...
Undefined reference to `sin` [duplicate]
...the answer you're looking for? Browse other questions tagged c math linker-errors undefined-reference or ask your own question.
How to undo a git pull?
... reset --hard develop@{"10 Minutes ago"}
if you are on windows cmd and get error: unknown switch `e
try adding quotes like this
git reset --hard 'develop@{"10 Minutes ago"}'
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Is there a way to auto expand objects in Chrome Dev Tools?
...
this gives the Uncaught ReferenceError: _ is not defined error
– MagePsycho
Nov 2 '15 at 7:41
5
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PHP: How to check if image file exists?
...he image does not exist (in which case the function would usually throw an error: getimagesize(http://www.mydomain.com/images/filename.png) [function.getimagesize]: failed) it will return false.
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Rails migration for change column
...n actions, as change_column is an irreversible migration and will raise an error should you need to roll back.
– DaveStephens
Apr 6 '15 at 17:09
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How can I test what my readme.md file will look like before committing to github?
...ub doesn't. There are other differences. The only safe bet is to trial and error with a gist and delete it when you are done.
– Bruno Bronosky
Apr 7 '18 at 2:18
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How to use SharedPreferences in Android to store, fetch and edit values [closed]
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this.getSharedPreferences gives me the following error: The method getSharedPreferences(String, int) is undefined for the type MyActivity
– Si8
Jul 29 '13 at 19:14
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minimize app to system tray
...lTipIcon.Info; //Shows the info icon so the user doesn't think there is an error.
this.notifyIcon.BalloonTipText = "[Balloon Text when Minimized]";
this.notifyIcon.BalloonTipTitle = "[Balloon Title when Minimized]";
this.notifyIcon.Icon = ((System.Drawing.Icon)(resources.GetObject("notifyIcon.Icon")...
How do I mount a remote Linux folder in Windows through SSH? [closed]
...salovic: Since longer, don't know the exact date. Just that it didn't work error free on x64 until about something like half a year ago. The better question is how do you create an RSA key on windows, but there, gitbash @ google-code to the rescue.
– Stefan Steiger
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