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Python string class like StringBuilder in C#?
... Note that this article was written based on Python 2.2. The tests would likely come out somewhat differently in a modern version of Python (CPython usually successfully optimizes concatenation, but you don't want to depend on this in important code) and a generator expression where he...
Smooth scrolling when clicking an anchor link
...e too much, for instance a javascript link like <a href="javascript:$('#test').css('background-color', '#000')">Test</a>. You should rather use $('a[href^=#]') to match all urls that start with a hash character.
– Martin Braun
Apr 3 '16 at 17:58
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How to return a string value from a Bash function
...n_a_string_message+=$(date)
ret=$MYLIB_return_a_string_message
}
and testing this example:
$ return_a_string result; echo $result
The date is 20160817
Note that the bash "declare" builtin, when used in a function, makes the declared variable "local" by default, and "-n" can also be used wit...
MongoDB: Combine data from multiple collections into one..how?
...regations along with lookups, in a single query. Here is an example I have tested that works with MongoDB 4.0:
// Create employees data for testing the union.
db.getCollection('employees').insert({ name: "John", type: "employee", department: "sales" });
db.getCollection('employees').insert({ name: ...
iOS 7 parallax effect in my view controller
...S 7).
DVParallaxView (requires iOS 5.0 or higher and ARC).
MKParallaxView (tested with iOS 6.0, requires ARC).
UIView-MWParallax (tested with iOS 6.1, requires ARC).
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Python list of dictionaries search
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I tested various methods to go through a list of dictionaries and return the dictionaries where key x has a certain value.
Results:
Speed: list comprehension > generator expression >> normal list iteration >...
Get list of JSON objects with Spring RestTemplate
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After multiple tests, this is the best way I found :)
Set<User> test = httpService.get(url).toResponseSet(User[].class);
All you need there
public <T> Set<T> toResponseSet(Class<T[]> setType) {
HttpEntity<...
Most efficient T-SQL way to pad a varchar on the left to a certain length?
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+1 Just tested a load of different methods and this was the fastest. You might need to RTRIM(@str) though if that can contain trailing spaces.
– Martin Smith
Apr 3 '11 at 10:54
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C++ Best way to get integer division and remainder
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I tried a quick test. With g++ 4.3.2 using -O2, the assembler output clearly shows it using one idivl instruction and using the results in eax and edx. I'd have been shocked if it didn't.
– Fred Larson
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Easy way to turn JavaScript array into comma-separated list?
...ar csv = new csvWriter();
csv.del = '\t';
csv.enc = "'";
var nullVar;
var testStr = "The comma (,) pipe (|) single quote (') double quote (\") and tab (\t) are commonly used to tabulate data in plain-text formats.";
var testArr = [
false,
0,
nullVar,
// undefinedVar,
'',
{ke...