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Ball to Ball Collision - Detection and Handling
...re and work with it that way. There's no reason for that expensive square root operation.
Also, once you have found a collision you have to continue to evaluate collisions until no more remain. The problem is that the first one might cause others that have to be resolved before you get an accurat...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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For MySQL, MariaDB
ALTER TABLE [table name] MODIFY COLUMN [column name] [data type] NULL
Use MODIFY COLUMN instead of ALTER COLUMN.
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How to redirect to a 404 in Rails?
... to do it yourself. If your application hijacks all of the routes from the root. It's bad design, but sometimes un-avoidable.
– ablemike
Oct 3 '11 at 13:54
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MongoDb query condition on comparing 2 fields
...t those with condition Grade1 > Grade2 , how can I get a query like in MySQL?
4 Answers
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Alternative for PHP_excel
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@RZB - You use whichever library works for you, though MySQL doesn't (as far as I'm aware) have any native import function for .xls files, only for .csv using LOAD DATA INFILE. As the developer of PHPExcel, I will certainly promote it and recommend it where appropriate, but I don...
EC2 Can't resize volume after increasing size
...s Change Everything"
The process works even if the volume to extend is the root volume of running instance!
Say we want to increase boot drive of Ubuntu from 8G up to 16G "on-the-fly".
step-1) login into AWS web console -> EBS -> right mouse click on the one you wish to resize -> "Modify ...
View contents of database file in Android Studio
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You may have to root your avd, and/or start adb as root at step 3 'root adb -s emulator-xxxx shell'
– Distwo
Apr 10 '14 at 17:18
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Why does sudo change the PATH?
...d env_check
lists are displayed when sudo is run by root with the
-V option. If sudo was compiled with the SECURE_PATH
option, its value will be used for the PATH environment
variable. This flag is on by de...
Converting Epoch time into the datetime
...-%m-%d %H:%M:%S", time.gmtime(1347517119))
'2012-09-12 23:18:39'
Also in MySQL, you can FROM_UNIXTIME like:
INSERT INTO tblname VALUES (FROM_UNIXTIME(1347517119))
For your 2nd question, it is probably because getbbb_class.end_time is a string. You can convert it to numeric like: float(getbbb_c...
In node.JS how can I get the path of a module I have loaded via require that is *not* mine (i.e. in
...in() calls), then resolve the package.json — which must always be in the root of the project — and pass to path.dirname():
let packagePath = path.dirname(require.resolve("moduleName/package.json"));
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