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How to retrieve the current value of an oracle sequence without increment it?
... ALTER SEQUENCE seq INCREMENT BY -1; is going to be a problem unless one can guarantee that that no other session will call seq.nextval. Otherwise the sequence will be handing out duplicate values, which is usually not what one want.
– Shannon Severance
A...
Differences between Intent and PendingIntent
...nt
An Android Intent is an object carrying an intent, i.e. a message from one component to another component either inside or outside of the application. Intents can communicate messages among any of the three core components of an application -- Activities, Services, and BroadcastReceivers.
The i...
Git push won't do anything (everything up-to-date)
...ut I could push to master without worrying about all this!
When you git clone, by default it sets up your local master branch to push to the remote's master branch (locally referred to as origin/master), so if you only commit on master, then a simple git push will always push your changes back.
Ho...
Does a foreign key automatically create an index?
...tomatically for the referencing end, though it's often a good idea to make one yourself. See stackoverflow.com/questions/970562/…
– Craig Ringer
Aug 23 '12 at 4:56
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Get JavaScript object from array of objects by value of property [duplicate]
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which one is the fastest one?
– SalmanShariati
Jul 9 '15 at 14:20
5
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'id' is a bad variable name in Python
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@Caramdir: Good catch, id was slated for removal at one time, but eventually they decided not to remove it. I'm no longer able to edit my original comment, so I'll delete it to avoid confusing people in the future.
– Eli Courtwright
Mar ...
What is the difference between a field and a property?
...and oddly-upvoted incorrect comments. A property should always encapsulate one or more fields, and should never do any heavy lifting or validation. If you need a property such a UserName or Password to have validation, change their type from strings to Value Objects. There is an unspoken contract b...
Detect application heap size in Android
...VM Heap Size set to 16MB:
maxMemory: 16777216
getMemoryClass: 24
Nexus One:
With VM Heap size set to 32MB:
maxMemory: 33554432
getMemoryClass: 32
With VM Heap size set to 24MB:
maxMemory: 25165824
getMemoryClass: 32
Viewsonic GTab:
With VM Heap Size set to 32:
maxMemory: 33554432
ge...
How to count total number of watches on a page?
...been trying to do something similar, and found this snippet very helpful. One thing I that I think is worth clarifying is that 'root' should be set to whatever element has the 'ng-app' attribute, as that is where the $rootScope is kept. In my app its on the 'html' tag. Running your script as is m...
Open firewall port on CentOS 7
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Use this command to find your active zone(s):
firewall-cmd --get-active-zones
It will say either public, dmz, or something else. You should only apply to the zones required.
In the case of public try:
firewall-cmd --zone=public --add-port=2888/tcp --permane...