Writing Mathematical Expressions with LaTeX
Writing Mathematical Expressions with LaTeX
https://link.springer.com/content/pdf/bbm%3A978-1-4842-3913-1%2F1.pdf
TensorFlow
Convolutional Neural Network
A Guide to TF Layers: Building a Convolutional Neural Network
TensorFlow + MNIST
TensorFlow
Confluence
Confluence does not start due to Spring Application context has not been set
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chown -R confluence.confluence /opt/atlassian/confluence/ chown -R confluence.confluence /var/atlassian/application-data/confluence/ chmod -R u=rwx,go-rwx /opt/atlassian/confluence/ chmod -R u=rwx,go-rwx /var/atlassian/application-data/confluence/ sudo find / -type f -size +10M -exec ls -lh {} \; df -h df -i $ sudo /etc/init.d/confluence start $ sudo /etc/init.d/confluence stop $ sudo /etc/init.d/confluence restart #For starting Confluence as a service [Not Used] #/opt/atlassian/confluence/bin/start-confluence.sh #/opt/atlassian/confluence/bin/stop-confluence.sh $ ping `cat /etc/hostname` service mysql stop service mysql start service mysql restart service mysql reload |
MySQL
On macOS Sierra & OS to start/stop/restart MySQL post 5.7 from the command line:
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sudo launchctl load -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist sudo launchctl unload -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist mysqladmin ping systemctl status mysql.service mysqladmin -p -u root version |
Comparing Pointers to References
Comparing Pointers to References
P=Pointers, R=References
What is stored
P&R: Memory address
Can be re-assigned (to another address)
P: Yes
R: No
Can be null
P: Yes (use nullptr)
R: No (must be initialized)
Accessing contents
P: *ActorPtr
R: ActorRef
Accessing address
P: ActorPtr
R: &ActorRef
Changing the address
P: ActorPtr = &Actor
R: Not allowed
Changing the value
P: *ActorPtr = Actor
P: ActorRef = Actor
The & and * Symbols in Context
CopyOfActor = *ActorPtr;
ActorAddress = &Actor;
Symbol: * (dereference)
Syntax: *ActorPtr
Meaning: Contents at ActorPtr
Symbol: &
Syntax: &Actor, &ActorRef
Meaning: Address of Actor or ActroRef
Pointers or References?
Golden Rule: Use references unless you can’t.
– References are newer and safer.
– Pointers are older and provide back-compatibility.
– Pointers are more powerful but also dangerous.
