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What is the LD_PRELOAD trick?
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@Joshua: what are ruid and euid?
– heinrich5991
Nov 4 '12 at 10:27
20
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Best way to check for nullable bool in a condition expression (if …)
I was wondering what was the most clean and understandable syntax for doing condition checks on nullable bools.
12 Answers...
How to remove a key from a Python dictionary?
...other easier to read, which is fine. Both are idiomatic Python, so choose whatever you prefer. But claiming that this answer is more complex or inefficient simply makes no sense.
– Sven Marnach
Jun 15 '17 at 18:44
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SVG gradient using CSS
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Just use in the CSS whatever you would use in a fill attribute.
Of course, this requires that you have defined the linear gradient somewhere in your SVG.
Here is a complete example:
rect {
cursor: pointer;
shape-rendering: crispE...
NodeJS - What does “socket hang up” actually mean?
...e, the client decides to cancel/abort the request.
This stack trace shows what happens when a client cancels the request.
Trace: { [Error: socket hang up] code: 'ECONNRESET' }
at ClientRequest.proxyError (your_server_code_error_handler.js:137:15)
at ClientRequest.emit (events.js:117:20)
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How to decorate a class?
...ch you've outlined. However, not knowing your specific scenario, YMMV :-)
What you're thinking of is a metaclass. The __new__ function in a metaclass is passed the full proposed definition of the class, which it can then rewrite before the class is created. You can, at that time, sub out the constr...
What is the difference between a generative and a discriminative algorithm?
...A generative algorithm models how the data was "generated", so you ask it "what's the likelihood this or that class generated this instance?" and pick the one with the better probability. A discriminative algorithm uses the data to create a decision boundary, so you ask it "what side of the decision...
Remove characters except digits from string using Python?
...ng (with ordinals, not characters directly, as keys) that returns None for what you want to delete. Here's a convenient way to express this for deletion of "everything but" a few characters:
import string
class Del:
def __init__(self, keep=string.digits):
self.comp = dict((ord(c),c) for c in...
Is there a format code shortcut for Visual Studio?
...eys are displayed to the right of the menu items, so it's easy to discover what they are on your system.
(Please do not edit this answer to change the key bindings above to what your system has!)
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how can I see what ports mongo is listening on from mongo shell?
If I have a mongo instance running, how can I check what port numbers it is listening on from the shell? I thought that db.serverStatus() would do it but I don't see it. I see this
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