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Use tnsnames.ora in Oracle SQL Developer
...ra available at Drive:\oracle\product\10x.x.x\client_x\NETWORK\ADMIN
Now you can connect via the TNSnames options.
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What's the @ in front of a string in C#?
... Oh my, that sounds annoying... even more glad I'm using C# now :p
– Svish
Feb 17 '09 at 11:15
You cann...
Manually adding a Userscript to Google Chrome
...t": true is required if you want to use any of the supported GM_* methods.
Now, in Chrome's Extension manager (URL = chrome://extensions/), Expand "Developer mode".
Click the Load unpacked extension... button.
For the folder, paste in the folder for your script, In this example it is: C:\MyChromeScr...
Integrating the ZXing library directly into my Android application
...ed folder and open the core directory and select core.jar ... hit enter!
Now you just have to correct a few errors in the translations and the AndroidManifest.xml file :) Now you can happily compile, and you will now have a working standalone barcode scanner app, based on the ZXing source ;)
Happ...
Checking if an Android application is running in the background
... activity state is briefly locked down to do the switch) that we actually know for sure what the next thing will be.
And the implementation and global behavior here is not guaranteed to remain the same in the future.
I wish I had read this before I posted an answer on the SO, but hopefully it...
Is it a good idea to index datetime field in mysql?
...it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY) and you have no other index in the condition, MySQL will have to do a full table scan on every query. I'm not sure how many rows are generated in 30 days, but as long as it's less t...
Add a reference column migration in Rails 4
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Now, if you use the special generator syntax for migrations, Rails 4.2 will automatically create the correct migration with foreign key constraints included. rails g migration AddUserToUploads user:references produces add_ref...
How do you serialize a model instance in Django?
... assuming obj is your model instance
dict_obj = model_to_dict( obj )
You now just need one straight json.dumps call to serialize it to json:
import json
serialized = json.dumps(dict_obj)
That's it! :)
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Javascript reduce on array of objects
...: 2 }, { age: 8 }]
.reduce((total, thing) => total + thing.age, 0);
Now we're giving a starting value to the aggregator. The starting value should be the type that you expect the aggregator to be (the type you expect to come out as the final value), in the vast majority of cases.
While you ar...
In Python, how do you convert a `datetime` object to seconds?
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Python now warns me: "TypeError: can't subtract offset-naive and offset-aware datetimes" What's the best solution to fix that?
– Aaron Ash
Apr 13 '13 at 0:47
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