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How to check if object property exists with a variable holding the property name?
...with "in"' operator the left expression must be a string or value that can converts into a string. Yes, you cannot write 'length' in 'qqq' but you cannot write 'qqq'.hasOwnProperty('length') either
– Wachburn
Jul 21 '15 at 17:18
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Node.js check if path is file or directory
.../ Very few fs allow this. But still. Don't trust the filesystem alone!
// Converts the non-standard "path-ends-in-slash" to the standard "path-is-identified-by current "." or previous ".." directory symbol.
function tryGetPath(pathItem) {
const isPosix = pathItem.includes("/");
if ((isPosix...
Get first day of week in PHP?
...date("Y-m-d", strtotime('sunday this week', strtotime($date))), "\n";
Againt it differs a bit across PHP versions:
Output for 5.3.0 - 5.6.6, php7@20140507 - 20150301, hhvm-3.3.1 - 3.5.1
2015-03-16
2015-03-22
2015-03-23
2015-03-29
Output for 4.3.5 - 5.0.5, 5.2.0 - 5.2.17
2015-03-16
2015-03-22
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How can I remove all text after a character in bash?
...rrectly, this would work:
echo "Hello: world" | cut -f1 -d":"
This will convert "hello: world" into "hello".
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Why doesn't list have safe “get” method like dictionary?
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The best thing you can do is to convert the list into a dict and then access it with the get method:
>>> my_list = ['a', 'b', 'c', 'd', 'e']
>>> my_dict = dict(enumerate(my_list))
>>> print my_dict
{0: 'a', 1: 'b', 2: 'c', 3: 'd'...
Python: One Try Multiple Except
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If for example you have to convert multiple versions of a data structure to a new structure, when updating versions of code for example, you can nest the try..excepts.
– Rolf of Saxony
Dec 4 '15 at 14:00
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How to create dictionary and add key–value pairs dynamically?
...es will be coerced to a string when used as a key. E.g. a Date object gets converted to its string representation:
dict[new Date] = "today's value";
console.log(dict);
// => {
// "Sat Nov 04 2016 16:15:31 GMT-0700 (PDT)": "today's value"
// }
Note however that this doesn't necessarily...
Unable to find specific subclass of NSManagedObject
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Seems like Apple forgot to fully convert it to the swift .. dont know why but this fixed it for me pretty gently
– Jiří Zahálka
Nov 30 '14 at 0:32
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Reading/parsing Excel (xls) files with Python
...er of caveats is huge and the documentation is lacking and annoying. I ran into many weird bugs and gotchas, some of which took many hours to figure out.
UPDATE: For newer .xlsx files, the recommended library for reading and writing appears to be openpyxl (thanks, Ikar Pohorský).
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Should I store entire objects, or pointers to objects in containers?
...ntire program all at once if you decide that an object container should be converted to a pointer container. This might be the case under some designs. In that case, it is a fragile design. In that case, don't blame your problem on "weakness" of object containers.
– allyourcode...