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What are the advantages of using a schema-free database like MongoDB compared to a relational databa
...ic unit of storage is analogous to JSON, Python dictionaries, Ruby hashes, etc. This is a rich data structure capable of holding arrays and other documents. This means you can often represent in a single entity a construct that would require several tables to properly represent in a relational db. T...
How do I create a random alpha-numeric string in C++?
...+ to learn (consider how it carries over to std::chrono, std::string_view, etc).
– jeremyong
Jul 27 '17 at 6:07
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python: How do I know what type of exception occurred?
...ir!")
If you want to dig deeper and examine the stack, look at variables etc., use the post_mortem function of the pdb module inside the except block:
import pdb
pdb.post_mortem()
I've found this last method to be invaluable when hunting down bugs.
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Progress indicator during pandas operations
... a new `tqdm` instance with `pandas`
# (can use tqdm_gui, optional kwargs, etc.)
tqdm.pandas()
# Now you can use `progress_apply` instead of `apply`
df.groupby(0).progress_apply(lambda x: x**2)
In case you're interested in how this works (and how to modify it for your own callbacks), see the examp...
smart pointers (boost) explained
...ou believe that Java uses the same idea with References ? Soft, Hard, Weak etc ?
– gansub
Apr 10 '19 at 3:34
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Cosmic Rays: what is the probability they will affect a program?
... Makers go to huge lengths to make sure the silicon, solder, encapsulation etc doesn't contain any alpha or beta emitters.
– Martin Beckett
Apr 6 '10 at 3:12
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Unable to set data attribute using jQuery Data() API
...HTML (along with attributes) are just text. The data, functions, objects, etc that are used by JavaScript exist on a separate plane. Only when JavaScript is instructed to do so, it will read or update the HTML text, but all the data and functionality you create with JavaScript are acting completely...
What is the difference between user variables and system variables?
What is the difference between user variables such as PATH , TMP , etc. and system variables?
5 Answers
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Why isn't textarea an input[type=“textarea”]?
...fined as containing CDATA, you still need to use entities for <, &, etc. It is just so it can handle whitespace.
– Quentin
Apr 12 '11 at 15:04
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Using SSH keys inside docker container
...ct. You need to add
RUN echo " IdentityFile ~/.ssh/id_rsa" >> /etc/ssh/ssh_config
to your Dockerfile in order to get it to recognize your ssh key.
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