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C++ Structure Initialization
... don't get C++ programmers when it comes to being consistent and writing maintainable code, they seem to always want to do something different to make their code stand out, the code is meant to reflect the problem being solved it shouldn't be an idiom on its own, aim for reliability and ease of main...
Swift class introspection & generics
...based type using generics, however I am encountering difficulty with class introspection.
7 Answers
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&& (AND) and || (OR) in IF statements
...
If we didn't have 'short-circuits' in Java, we'd receive a lot of NullPointerExceptions in the above lines of code.
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How to make a great R reproducible example
...r for grouped tbl_df (class grouped_df) from dplyr. In these cases you can convert back to a regular data frame before sharing, dput(as.data.frame(my_data)).
Worst case scenario, you can give a text representation that can be read in using the text parameter of read.table :
zz <- "Sepal.Length ...
How to set cornerRadius for only top-left and top-right corner of a UIView?
...
Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:
override func layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)
}
If you don't do tha...
Django : How can I see a list of urlpatterns?
...om list_urls(lis[1:], acc)
for p in list_urls(urlconf.urlpatterns):
print(''.join(p))
This code prints all URLs, unlike some other solutions it will print the full path and not only the last node. e.g.:
admin/
admin/login/
admin/logout/
admin/password_change/
admin/password_change/done/
admi...
How to recursively list all the files in a directory in C#?
...need. Except as opposed to searching the files and comparing names, just print out the names.
It can be modified like so:
static void DirSearch(string sDir)
{
try
{
foreach (string d in Directory.GetDirectories(sDir))
{
foreach (string f in Directory.GetFiles(d)...
How do I read CSV data into a record array in NumPy?
I wonder if there is a direct way to import the contents of a CSV file into a record array, much in the way that R's read.table() , read.delim() , and read.csv() family imports data to R's data frame?
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How do I check in SQLite whether a table exists?
...veToFirst())
{
cursor.close();
return false;
}
int count = cursor.getInt(0);
cursor.close();
return count > 0;
}
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Select datatype of the field in postgres
...r example
I have the following table,
student_details (
stu_id integer,
stu_name varchar(30 ),
joined_date timestamp
);
...