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iOS: Use a boolean in NSUserDefaults

... You can set your boolean by using: [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"logged_in"]; [[NSUserDefaults standardUserDefaults] synchronize]; and read it by using this code: if(![[NSUserDefaults standardUserDefaults] boolForKey:@"logged_in"]) { [self d...
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cancelling a handler.postdelayed process

I am using handler.postDelayed() to create a waiting period before the next stage of my app takes place. During the wait period I am displaying a dialog with progress bar and cancel button. ...
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Android JSONObject - How can I loop through a flat JSON object to get each key and value

How I can get each item's key and value without knowing the key nor value beforehand? 5 Answers ...
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Select objects based on value of variable in object using jq

...f you meant the keys after the filter, giving "FOO" "BAR", use this answer and use .key instead of [.key, .value.name]. – ggorlen Sep 12 at 4:26 ...
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Test if remote TCP port is open from a shell script

I'm looking for a quick and simple method for properly testing if a given TCP port is open on a remote server, from inside a Shell script. ...
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git -> show list of files changed in recent commits in a specific directory

In Subversion svn log is the command to display commit log messages -- for details see the online manual at http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.log.html ...
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Inject errors into already validated form?

... Form._errors can be treated like a standard dictionary. It's considered good form to use the ErrorList class, and to append errors to the existing list: from django.forms.utils import ErrorList errors = form._errors.setdefault("myfield", ErrorList()) errors.app...
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Python call function within class

... What happens if we dont use self? and directly call distToPoint(p)? – Marlon Abeykoon Aug 16 '16 at 4:30 4 ...
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Devise - How do I forbid certain users from signing in?

... determine "active" state using #our own "is_active" column super and self.is_active? end end UPDATE As Matt Huggins notes, the method is now called active_for_authentication? (Documentation) share | ...
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Parse date without timezone javascript

...// "Fri Jul 08 2005 13:22:33 GMT+0200 (Central European Summer Time)" // and something else for you console.log(d.toString()) // this logs // Fri, 08 Jul 2005 11:22:33 GMT // for everyone console.log(d.toUTCString()) Javascript Date object are timestamps - they merely contain a ...