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How to find memory leak in a C++ code/project?
...ndy tool with a neat integration into visual studio. I could save a lot of time using it. pointed me to the lines where I allocated memory and did not free it. Great. And it is cheap, compared with other memory leak finders I found.
– this.myself
Jan 14 '15 at ...
Why do we need tuples in Python (or any immutable data type)?
... are also immutable in Java, developed quite separately but about the same time as Python, and just about everything is immutable in truly-functional languages.
in Python in particular, only immutables can be hashable (and, therefore, members of sets, or keys in dictionaries). Again, this afford opt...
Django: Why do some model fields clash with each other?
...actly the same values
for the attributes (including
related_name) each time.
More info here.
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How do you add a Dictionary of items into another Dictionary
...meter '(key: _, value: _)' does not support destructuring (at least at the time of this writing). One would need to restructure the closure according to [this stackoverflow answer] (stackoverflow.com/questions/44945967/…):
– JonnyB
Dec 4 '17 at 22:11
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What is %2C in a URL?
...ill decode and return the symbol (or symbols).
Hope this saves you some time.
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reStructuredText tool support
...e and/or outdated, and can be updated only via commit privileges. For some time there was a comprehensive list at the Wikipedia reStructuredText page , but this apparently " did not meet the notability guideline for web content " and was removed .
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Automatic vertical scroll bar in WPF TextBlock?
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Sometimes a MaxHeight on the Scrollviewer is needed to force the scoll to appear if the enclosing element doesn't enforce any height.
– HackerBaloo
Feb 7 '17 at 16:48
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Relational Database Design Patterns? [closed]
...ign Patterns." The first 2 show sample data models which was common in the time frame the books were written. Volume 3 though actually has multiple design patterns for a given problem scenario. E.g., chapter 4 covers hierarchies/aggregations/peer-to-peer scenarios, and then offers multiple designs t...
Counting the number of True Booleans in a Python List
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In [2]: x = [random.choice([True, False]) for i in range(100)]
In [3]: %timeit x.count(True)
970 ns ± 41.1 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
In [4]: %timeit sum(x)
1.72 µs ± 161 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
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How do I uniquely identify computers visiting my web site?
...g visitors, we estimate how rapidly browser fingerprints might change over time. In our sample, fingerprints changed quite
rapidly, but even a simple heuristic was usually able to guess when a fingerprint was an “upgraded” version of a previously observed browser’s
fingerprint, with 99.1% ...