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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...o being compared to true and is thus also considered to be equal to true.
Now, the "WHY?!?!" question is explained by the fact that Javascript has its roots in the C-family of languages. In which any number, other than 0 is considered to be a valid true boolean. :-/
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undefined method `source_index' for Gem:Module (NoMethodError)
...gems version prior to 2.0.0, like 1.8.25 to get the functionality back for now. You can get a compatible version using gem update --system 1.8.25.
As a very important aside, Rails 2.3.5 needs to be updated to a minimum of 2.3.17. There are critical security vulnerabilities that open you up to some ...
psql: could not connect to server: No such file or directory (Mac OS X)
...nstall postgresql
Start server : brew services start postgresql
You should now have to create your databases... (createdb)
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Is there a common Java utility to break a list into batches?
...lf a utility to break a list into batches of given size. I just wanted to know if there is already any apache commons util for this.
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How to get a list of MySQL views?
...db_name';
is better work directly with information_schema.VIEWS (observe now is VIEWS and not TABLES anymore), thus you can retrieve more data, use DESC VIEWS for more details:
+----------------------+---------------------------------+------+-----+---------+-------+
| Field | Type ...
Run Java Code Online [closed]
...restrictions", maybe in the future i will add warnings or something. Right now "while(true){}" is working as expected. no prob.
– Sergio
Apr 27 '16 at 16:57
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quick random row selection in Postgres
...e optimal solution if you want only one row selected, because you need to know the COUNT of the table to calculate the exact percentage.
To avoid a slow COUNT and use fast TABLESAMPLE for tables from 1 row to billions of rows, you can do:
SELECT * FROM my_table TABLESAMPLE SYSTEM(0.000001) LIMI...
“An attempt was made to load a program with an incorrect format” even when the platforms are the sam
... Thanks a lot. This got me too. Checked build in Configuration Manager and now it works (WPF desktop application).
– Dan Gøran Lunde
May 24 '13 at 10:30
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Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
... -S DBServerName -U DBLogin -P DBPassword -A all -d DBName
If you don't know where to run above command then you can simply run 'aspnet_regsql.exe' executable file.
In order to locate this file open your RUN Command Box by pressing Windows Key + r and put below command in that %windir%\Microsoft....
The most efficient way to implement an integer based power function pow(int, int)
...eral the most optimal method. There are no efficient algorithms currently known for finding the minimal sequence of multiplications.
– Eric Postpischil
Dec 27 '13 at 21:32
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