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Computed read-only property vs function in Swift
...can get and/or set. I use functions (or methods) when actual work is being done. Maybe something has to be computed or read from disk or from a database: In this case I use a function, even when only a simple value is returned. That way I can easily see whether a call is cheap (properties) or possib...
Why does ++[[]][+[]]+[+[]] return the string “10”?
...] === 0. + converts something into a number, and in this case it will come down to +"" or 0 (see specification details below).
Therefore, we can simplify it (++ has precendence over +):
++[[]][0]
+
[0]
Because [[]][0] means: get the first element from [[]], it is true that:
[[]][0] returns the ...
How can I open a cmd window in a specific location?
How can I open a cmd window in a specific location without having to navigate all the way to the directory I want?
40 Answe...
How to use ELMAH to manually log errors
Is it possible to do the following using ELMAH?
10 Answers
10
...
Test if something is not undefined in JavaScript
...== 'undefined' && typeof response[0].title !== 'undefined'){
//Do something
}
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How to check if an object is nullable?
How do I check if a given object is nullable in other words how to implement the following method...
14 Answers
...
Get nth character of a string in Swift programming language
....upperBound)] }
}
To convert the Substring into a String, you can simply
do String(string[0..2]), but you should only do that if
you plan to keep the substring around. Otherwise, it's more
efficient to keep it a Substring.
It would be great if someone could figure out a good way to merge
these tw...
How to “EXPIRE” the “HSET” child key in redis?
...
Redis does not support having TTL on hashes other than the top key, which would expire the whole hash. If you are using a sharded cluster, there is another approach you could use. This approach could not be useful in all scenarios ...
What is the Python equivalent of Matlab's tic and toc functions?
...
Apart from timeit which ThiefMaster mentioned, a simple way to do it is just (after importing time):
t = time.time()
# do stuff
elapsed = time.time() - t
I have a helper class I like to use:
class Timer(object):
def __init__(self, name=None):
self.name = name
def __e...
Java: how to initialize String[]?
...ive type in java ) to use them as according to their specifications if you don't then its just like an empty reference variable (much like a pointer in the context of C++).
public class StringTest {
public static void main(String[] args) {
String[] errorSoon = new String[100];
e...