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Why can't C# interfaces contain fields?
...ntain the get and set methods of a property, the get and set methods of an indexer, and the add and remove methods of an event. But a field is not a method. There's no "slot" associated with a field that you can then "fill in" with a reference to the field location. And therefore, interfaces can de...
pandas: filter rows of DataFrame with operator chaining
...y , etc), but the only way I've found to filter rows is via normal bracket indexing
14 Answers
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Git: How to return from 'detached HEAD' state
...
warning: unable to unlink web/sites/default/default.settings.php: Permission denied
... other warnings ...
Note: checking out '1.87.1'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
st...
Difference between java.lang.RuntimeException and java.lang.Exception
...ns that can be prevented programmatically. E.g NullPointerException, ArrayIndexOutOfBoundException. If you check for null before calling any method, NullPointerException would never occur. Similarly ArrayIndexOutOfBoundException would never occur if you check the index first. RuntimeException are n...
string.Join on a List or other type
...eone is still on 2.0. However, intArray is unnecessary. List<int> is indexable and has a Count property, making the conversion to an array superfluous. You also might want to make the joining character a parameter rather than hardcoding it into the method.
– Anthony Pegra...
git diff between two different files
...tterns that are supported for two files is git diff [<options>] --no-index [--] <path> <path>. git diff a b only matches commit patterns, not files.
– Doug
Jul 8 at 5:34
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Dump a NumPy array into a csv file
...Frame(np_array).to_csv("path/to/file.csv")
if you don't want a header or index, use to_csv("/path/to/file.csv", header=None, index=None)
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Where can I find documentation on formatting a date in JavaScript?
...t, show only the date.
http://www.ecma-international.org/ecma-262/7.0/index.html#sec-date.prototype.todatestring
new Date().toDateString(); // e.g. "Fri Nov 11 2016"
toISOString: Show ISO 8601 date and time.
http://www.ecma-international.org/ecma-262/7.0/index.html#sec-date.protot...
How to get the filename without the extension in Java?
...urn null;
// Get position of last '.'.
int pos = str.lastIndexOf(".");
// If there wasn't any '.' just return the string as is.
if (pos == -1) return str;
// Otherwise return the string, up to the dot.
return str.substring(0, pos);
}
pub...
Test whether a list contains a specific value in Clojure
...se the keys here are indices and the vector in question does "contain" the index 0!).
To add to the confusion, in cases where it doesn't make sense to call contains?, it simply return false; this is what happens in (contains? :foo 1) and also (contains? '(100 101 102) 101). Update: In Clojure ≥ 1...