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What does `m_` variable prefix mean?
.../was commonly used in the C++ world and propagated to other languages too, including Java.
In a modern IDE it is completely redundant as the syntax highlighting makes it evident which variables are local and which ones are members. However, by the time syntax highlighting appeared in the late 90s,...
Find a private field with Reflection?
...y to do in Visual Studio. Set breakpoint at the variable, view its fields (including the private, usually started with m_fieldname). Replace that m_fieldname in to the command above.
– Hao Nguyen
Nov 24 '17 at 7:54
...
Filtering for empty or NULL names in a queryset
...empty (alias="") and NULL (alias=None) aliases from the query. Yours would include instances with Name(alias=None).
– damon
Apr 12 '19 at 22:16
...
How do I download a file over HTTP using Python?
...gress bar. It's cool, sure. There are several off-the-shelf solutions now, including tqdm:
from tqdm import tqdm
import requests
url = "http://download.thinkbroadband.com/10MB.zip"
response = requests.get(url, stream=True)
with open("10MB", "wb") as handle:
for data in tqdm(response.iter_cont...
How do I generate a stream from a string?
...coding.UTF8.GetBytes("\ufeff" + (value ?? "")) if you need to have the BOM included at the beginning of the stream
– robert4
Dec 17 '15 at 10:42
...
Detect when an HTML5 video finishes
...er, the if(!e) { e = window.event; } statement that this answer originally included is IE-specific code for getting the latest event from within an event handler attached with attachEvent on early versions of IE. Since in this case, the handler is being attached with addEventListener (and those earl...
How do I tell CPAN to install all dependencies?
...
Here is the one-liner making these changes permanent including automatic first-time CPAN configuration:
perl -MCPAN -e 'my $c = "CPAN::HandleConfig"; $c->load(doit => 1, autoconfig => 1); $c->edit(prerequisites_policy => "follow"); $c->edit(build_requires_ins...
Logical XOR operator in C++?
...return (a + b) % 2;
}
Which obviously can be demonstrated to work via:
#include <iostream>
bool XOR(bool a, bool b)
{
return (a + b) % 2;
}
int main()
{
using namespace std;
cout << "XOR(true, true):\t" << XOR(true, true) << endl
<< "XOR(true, ...
Add a properties file to IntelliJ's classpath
...Now select the folder that contains the property file(s). (I haven't tried including an individual file)
Intellij will now ask you what the "category" of the selected file is. Choose "classes" (even though they are not).
Now you must add the properties files to the artifact. Intellij will give you t...
Pandas count(distinct) equivalent
... reflect the DISTINCT requirement from the question! Moreover, it does not include counts of NaN!
– Corey Levinson
Jan 23 '19 at 20:03
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