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How to capture no file for fs.readFileSync()?
... an immediately invoked lambda for these scenarios:
const config = (() => {
try {
return JSON.parse(fs.readFileSync('config.json'));
} catch (error) {
return {};
}
})();
async version:
const config = await (async () => {
try {
return JSON.parse(await fs.readFileAsync(...
What is the pythonic way to avoid default parameters that are empty lists?
... Mohit Ranka: beware that not working_list is True if its length is 0. This leads to a inconsistent behaviour : if the functions receives a list with some element in it, its caller will have his list updated, and if the list is empty, it won't be touched.
– vincen...
How do I make Git ignore file mode (chmod) changes?
... in working tree:
git diff --summary | grep --color 'mode change 100755 => 100644' | cut -d' ' -f7- | xargs -d'\n' chmod +x
git diff --summary | grep --color 'mode change 100644 => 100755' | cut -d' ' -f7- | xargs -d'\n' chmod -x
Or in mingw-git
git diff --summary | grep 'mode change 1007...
Remove leading and trailing spaces?
...
You can use the strip() to remove trailing and leading spaces.
>>> s = ' abd cde '
>>> s.strip()
'abd cde'
Note: the internal spaces are preserved
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How to escape indicator characters (i.e. : or - ) in YAML
...text indented on the next line, after a pipe or greater-than sign:
text: >
Op dit plein stond het hoofdkantoor van de NIROM: Nederlands Indische
Radio Omroep
A pipe preserves newlines, a gt-sign turns all the following lines into one long string.
...
Getting a random value from a JavaScript array
... one-liner
const randomElement = array[Math.floor(Math.random() * array.length)];
Example
const months = ["January", "February", "March", "April", "May", "June", "July"];
const random = Math.floor(Math.random() * months.length);
console.log(random, months[random]);
...
What is BSON and exactly how is it different from JSON?
...: traversability. BSON adds some "extra" information to documents, like length of strings and subobjects. This makes traversal faster.
BSON is also designed to be fast to encode and decode. For example, integers are stored as 32 (or 64) bit integers, so they don't need to be parsed to and from ...
How is this fibonacci-function memoized?
...ng point about your rewrite: if you give them monomorphic type (i.e. Int -> Integer), then fib2 runs in exponential time, fib1 and fib3 both run in linear time but fib1 is also memoized - again because for fib3 the local definitions are redefined for every n.
– Vitus
...
How can you set class attributes from variable arguments (kwargs) in python
...__(self, **kwargs):
self.__dict__.update(kwargs)
then you can:
>>> bar = Bar(a=1, b=2)
>>> bar.a
1
and with something like:
allowed_keys = {'a', 'b', 'c'}
self.__dict__.update((k, v) for k, v in kwargs.items() if k in allowed_keys)
you could filter the keys beforeha...
Subqueries vs joins
... is true. The SQL engine should run the subquery only once and use the result as a list.
– dacracot
Sep 26 '08 at 19:05
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