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How to create a template function within a class? (C++)
...mplate definition (in addition to the declaration) should be in the header file, not the cpp, though it does not have to be in the body of the class declaration itself.
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Why would you use Expression rather than Func?
...voke' is not supported in LINQ to Entities.' and had to use ForEach after fetching the results.
– tymtam
Apr 29 '13 at 4:52
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Purpose of Django setting ‘SECRET_KEY’
...ents).
Unique tokens for a user session, password reset request, messages, etc.
Prevention of cross-site or replay attacks by adding (and then expecting) unique values for the request.
Generating a unique salt for hash functions.
So, the general answer is: There are many things in a Django app whi...
Setting the MySQL root user password on OS X
...te is so clear, than the above mentioned
$ sudo /usr/local/mysql/support-files/mysql.server stop
$ sudo /usr/local/mysql/support-files/mysql.server start --skip-grant-tables
/usr/local/mysql/bin/mysql
mysql> FLUSH PRIVILEGES;
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
my...
Read environment variables in Node.js
... convert the value to a string.
Avoid Boolean Logic
Even if your .env file defines a variable like SHOULD_SEND=false or SHOULD_SEND=0, the values will be converted to strings (“false” and “0” respectively) and not interpreted as booleans.
if (process.env.SHOULD_SEND) {
mailer.send();...
pdftk compression option
...tibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -dQUIET -sOutputFile=output.pdf input.pdf
Edit: I just discovered another option (for lossless compression), which avoids the nasty gs command. qpdf is a neat tool that converts PDFs (compression/decompression, encryption/decryption), and...
Downloading MySQL dump from command line
...ddress] -u [uname] -p db_name > db_backup.sql
It should drop the .sql file in the folder you run the command-line from.
EDIT: Updated to avoid inclusion of passwords in CLI commands, use the -p option without the password. It will prompt you for it and not record it.
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What is the best way to compare floats for almost-equality in Python?
...t's worth noting that the documentation also says: "Modulo error checking, etc, the function will return the result of..." In other words, the isclose function (above) is not a complete implementation.
– rkersh
Jul 14 '16 at 19:50
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What exactly is Heroku?
...ing your build scripts
Plenty of Add-on resources (applications, databases etc.)
Processes scaling - independent scaling for each component of your app without affecting functionality and performance
Isolation - each process (aka dyno) is completely isolated from each other
Full Logging and Visibili...
AngularJS: Basic example to use authentication in Single Page Application
...eartbeats for status checks, stores the session token in a cookie, events, etc.
You could either:
Modify the module and attach it to your own API, or
Use the module together with UserApp (a cloud-based user management API)
https://github.com/userapp-io/userapp-angular
If you use UserApp, you ...