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Default value to a parameter while passing by reference in C++
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104
You can do it for a const reference, but not for a non-const one. This is because C++ does not ...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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170
pandas.isnull() (also pd.isna(), in newer versions) checks for missing values in both numeric an...
Can I assume (bool)true == (int)1 for any C++ compiler?
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edited Apr 27 '10 at 21:14
Joe
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ans...
Populate data table from data reader
I'm doing a basic thing in C# (MS VS2008) and have a question more about proper design than specific code.
5 Answers
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How I can I lazily read multiple JSON values from a file/stream in Python?
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20
Here's a much, much simpler solution. The secret is to try, fail, and use the information in th...
How to change column datatype from character to numeric in PostgreSQL 8.4
...nding on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presales alter column code type numeric(10,0) using cast(code as numeric);
This will fail if you have anything in code that cannot be cast to num...
Postgresql SELECT if string contains
... Frans van BuulFrans van Buul
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ValueError: numpy.dtype has the wrong size, try recompiling
...ABI backward compatibility. This happened (unintentionally) with numpy 1.4.0.
As a consequence, users that updated numpy to 1.4.0, had binary incompatibilities with all other compiled packages, that were compiled against a previous version of numpy. This requires that all packages with binary extens...
Pull to refresh UITableView without UITableViewController
...ction: #selector(refresh(_:)), for: .valueChanged)
if #available(iOS 10.0, *) {
tableView.refreshControl = refreshControl
} else {
tableView.backgroundView = refreshControl
}
}
@objc func refresh(_ refreshControl: UIRefreshControl) {
// Do your job, when done:
r...
How to differentiate between time to live and time to idle in ehcache
...idated if it hasn't been requested for 4 seconds.
If timeToLiveSeconds = 90, then the object will be removed from cache after 90 seconds, even if it has been requested few milliseconds in the 90th second of its short life.
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