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Coalesce function for PHP?
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What about multiple ternary shortcuts, would something like "echo $a ?: $b ?: $c ?: $d;" work?
– ChrisR
Mar 26 '10 at 13:55
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How to duplicate sys.stdout to a log file?
...g so non-standard that nobody knows - I'll revise my question to also ask: What is the best way to accomplish logging when a python app is making a lot of system calls?
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Saving an Object (Data persistence)
...o longer necessary since the pickle module now does it automatically—see What difference between pickle and _pickle in python 3?.
The rundown is you could use something like the following to ensure that your code will always use the C version when it's available in both Python 2 and 3:
try:
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Why can tuples contain mutable items?
...ost. Either way, objects only know their reference count; they don't know what those references are (variables, containers, or the Python internals).
Together, these two insights explain your mystery (why an immutable tuple "containing" a list seems to change when the underlying list changes). In...
How to find out the MySQL root password
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Awesome. I am comprehending what worked in RHEL 7: Terminal 1: sudo service mysql stop sudo mysqld_safe --skip-grant-tables --skip-syslog --skip-networking Terminal 2: mysql -u root UPDATE mysql.user SET Password=PASSWORD('new password') WHERE User=...
What is a .h.gch file?
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Other answers are completely accurate with regard to what a gch file is. However, context (in this case, a beginner using g++) is everything. In this context, there are two rules:
Never, ever, ever put a .h file on a g++ compile line. Only .cpp files. If a .h file is ever com...
What is the --save option for npm install?
I saw some tutorial where the command was:
11 Answers
11
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jsonify a SQLAlchemy result set in Flask [duplicate]
...bjects cannot be jsonified automatically. Even Python's datetime fails ;)
What I have done in the past, is adding an extra property (like serialize) to classes that need to be serialized.
def dump_datetime(value):
"""Deserialize datetime object into string form for JSON processing."""
if v...
var self = this?
...s for event handlers changes the scope of this from "My instance" to "Whatever just called the callback" . So my code looks like this
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How do you create a static class in C++?
...ly static methods and members.
Using static methods will only limit you.
What you want is, expressed in C++ semantics, to put your function (for it is a function) in a namespace.
Edit 2011-11-11
There is no "static class" in C++. The nearest concept would be a class with only static methods. For...