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When to use symbols instead of strings in Ruby?
...ols allow you to call the method in a different order
def write(file:, data:, mode: "ascii")
# removed for brevity
end
write(data: 123, file: "test.txt")
freeze to keep as a string and save memory
label = 'My Label'.freeze
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rsync: difference between --size-only and --ignore-times
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There are several ways rsync compares files -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync co...
Storing Image Data for offline web application (client-side storage database)
...0MB of data that it will save (client-side) consisting mainly of PNG image files. The operation is as follows:
4 Answers
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How to access cookies in AngularJS?
...y want to use one or the other.
In addition to adding reference to the js file you need to inject ngCookies into your app definition such as:
angular.module('myApp', ['ngCookies']);
you should then be good to go.
Here is a functional minimal example, where I show that cookieStore is a thin wra...
What text editor is available in Heroku bash shell? [closed]
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Even if you could edit the files with vi it probably wouldn't solve your problem because the file system is ephemeral. Meaning... If you edit a file via heroku run bash you aren't actually changing the file for other dynos. To change a file for all d...
What is the EAFP principle in Python?
...er advantage is the avoidance of race conditions... eg, just try opening a file and if you get it, you got it. Instead of seeing if you can get it, then trying to get it afterwards and realise that in the miniscule amount of time between the check and access attemp, you can longer get it.
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How to re-sync the Mysql DB if Master and slave have different database incase of Mysql replication?
...following command in the MySQL client:
UNLOCK TABLES;
Now copy the dump file to the slave using scp or your preferred tool.
At the slave:
Open a connection to mysql and type:
STOP SLAVE;
Load master's data dump with this console command:
mysql -uroot -p < mysqldump.sql
Sync slave and m...
EF Code First foreign key without navigation property
...t references everything by obvious reasons.
Solution is C-style:
"copy" file with target class to migration project via link (drag-n-drop with alt key in VS)
disable nagivation property (and FK attribute) via #if _MIGRATION
set that preprocessor definition in migration app and don't set in model ...
Load dimension value from res/values/dimension.xml from source code
I'd like to load the value as it is.
I have two dimension.xml files, one in /res/values/dimension.xml and the other one in /res/values-sw360dp/dimension.xml .
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How can you diff two pipelines in Bash?
How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines:
3 Answers
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