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How to configure Ruby on Rails with no database?
It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database?
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Trying to embed newline in a variable in bash [duplicate]
...ar ) # Do not use double quotes "$var"
echo "$p"
Output is the same for all
a
b
c
Special thanks to contributors of this answer: kevinf, Gordon Davisson, l0b0, Dolda2000 and tripleee.
EDIT
See also BinaryZebra's answer providing many details.
Abhijeet Rastogi's answer and Dimitry's answer...
Can I concatenate multiple MySQL rows into one field?
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My need was to get ALL the data from one column. Don't use the GROUP BY clause to do this. Example : SELECT GROUP_CONCAT(emails SEPARATOR ', ') FROM users;
– Jonathan Bergeron
Jan 17 '14 at 14:04
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How to prevent custom views from losing state across screen orientation changes
...ublic Parcelable onSaveInstanceState() {
//begin boilerplate code that allows parent classes to save state
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
//end
ss.stateToSave = this.stateToSave;
return ss;
}
@Override
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What exactly is OAuth (Open Authorization)?
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What exactly is OAuth (Open Authorization)?
OAuth allows notifying a resource provider (e.g. Facebook) that the resource owner (e.g. you) grants permission to a third-party (e.g. a Facebook Application) access to their information (e.g. the list of your friends).
If you rea...
Fixed Table Cell Width
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You could try using the <col> tag manage table styling for all rows but you will need to set the table-layout:fixed style on the <table> or the tables css class and set the overflow style for the cells
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/col
<table cl...
Need a simple explanation of the inject method
...otal and then stores the result back into the accumulator. The next block call has this new value, adds to it, stores it again, and repeats.
At the end of the process, inject returns the accumulator, which in this case is the sum of all the values in the array, or 10.
Here's another simple example...
Why are elementwise additions much faster in separate loops than in a combined loop?
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Upon further analysis of this, I believe this is (at least partially) caused by the data alignment of the four-pointers. This will cause some level of cache bank/way conflicts.
If I've guessed correctly on how you are allocating your arrays, they are likely to be aligned to the page line....
How to delete all records from table in sqlite with Android?
...is for deleting record on user input and the second button is for deleting all records. But when I want to delete data it shows the message
"Your application has been forcefully stopped".
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How do you calculate log base 2 in Java for integers?
...ting-point to help with integer arithmetics, you have to be careful.
I usually try to avoid FP calculations whenever possible.
Floating-point operations are not exact. You can never know for sure what will (int)(Math.log(65536)/Math.log(2)) evaluate to. For example, Math.ceil(Math.log(1<<29...