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Is it possible to declare two variables of different types in a for loop?
...o declare two variables of different types in the initialization body of a for loop in C++?
8 Answers
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Convert a String In C++ To Upper Case
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This appears to perform extremely badly with g++ 5.2 -O3, and Boost 1.58 (like 30x worse than calling glibc's toupper in a loop.) There's a dynamic_cast of the locale that doesn't get hoisted out of the per-char loop. See my answer. On the p...
Why do people use __(double underscore) so much in C++
...dations :
The use of two underscores (`__') in identifiers is reserved for the compiler's internal use according to the ANSI-C standard.
Underscores (`_') are often used in names of library functions (such as "_main" and "_exit"). In order to avoid collisions, do not begin an identifier wit...
What is the preferred/idiomatic way to insert into a map?
...r functions are not functionally equivalent :
The operator[] will search for the key, insert a default constructed value if not found, and return a reference to which you assign a value. Obviously, this can be inefficient if the mapped_type can benefit from being directly initialized instead of de...
How do you do a limit query in JPQL or HQL?
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This was posted on the Hibernate forum a few years back when asked about why this worked in Hibernate 2 but not in Hibernate 3:
Limit was never a supported clause
in HQL. You are meant to use
setMaxResults().
So if it worked in Hibernate 2, it seem...
Calling a class function inside of __init__
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Yes! This was exactly what I was looking for. Thank you!
– PythonJin
Sep 28 '12 at 19:56
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How to disable GCC warnings for a few lines of code
... that in GCC you can override per file compiler flags . How can I do this for "next line", or with push/pop semantics around areas of code using GCC?
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Add a prefix to all Flask routes
...TION_ROOT"] = "/abc/123"
@app.route("/")
def index():
return "The URL for this page is {}".format(url_for("index"))
# Will return "The URL for this page is /abc/123/"
Setting the APPLICATION_ROOT config value simply limit Flask's session cookie to that URL prefix. Everything else will be au...
Save classifier to disk in scikit-learn
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0.9526989426822482
Edit: in Python 3.8+ it's now possible to use pickle for efficient pickling of object with large numerical arrays as attributes if you use pickle protocol 5 (which is not the default).
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Split Python Flask app into multiple files
...s"
If this is an option, you might consider using different URL prefixes for the different APIs/Blueprints in order to cleanly separate them. This can be done with a slight modification to the above register_blueprint call:
app.register_blueprint(account_api, url_prefix='/accounts')
For further...