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Lists: Count vs Count() [duplicate]
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Count() is an extension method introduced by LINQ while the Count property is part of the List itself (derived from ICollection). Internally though, LINQ checks if your IEnumerable implements ICollection and if it does it uses the Count property. So at the end of the...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...e to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothered to override it).
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junit & java : testing non-public methods [duplicate]
...methods, because you should only be unit-testing your public API, and that by doing so, you should be covering the code in your non-public methods. Your mileage may vary; I find that this is sometimes the case and sometimes not.
With that said, there are a couple of ways to test non-public methods...
In Python, when to use a Dictionary, List or Set?
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Note that Python 3.7 has dict ordered by default
– Gigi Bayte 2
Oct 7 '18 at 5:05
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The Concept of 'Hold space' and 'Pattern space' in sed
I'm confused by the two concepts in sed: hold space and pattern space. Can someone help explain them?
3 Answers
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:: (double colon) operator in Java 8
...eference methods:
reduce(Math::max);
Note that this will be interpreted by the compiler, not by the JVM at runtime! Although it produces different bytecodes for all three code snippets, they are semantically equal, so the last two can be considered to be short (and probably more efficient) versio...
Why don't C++ compilers define operator== and operator!=?
...t to provide a compiler-generated default for this operator can be guessed by what Stroustrup said about the default copy constructor in "The Design and Evolution of C++" (Section 11.4.1 - Control of Copying):
I personally consider it unfortunate
that copy operations are defined by
default a...
How do I pass the value (not the reference) of a JS variable to a function? [duplicate]
...ed to create a separate scope that saves the variable in its current state by passing it as a function parameter:
for (var i = 0; i < results.length; i++) {
(function (i) {
marker = results[i];
google.maps.event.addListener(marker, 'click', function() {
change_selection(i);
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Sort a text file by line length including spaces
...rt -n | cut -d" " -f2-
In both cases, we have solved your stated problem by moving away from awk for your final cut.
Lines of matching length - what to do in the case of a tie:
The question did not specify whether or not further sorting was wanted for lines of matching length. I've assumed that...
Behaviour for significant change location API when terminated/suspended?
...ionManagerDelegate. You can detect that you are running in the background by checking the applicationState, and do limited work for the case where you are woken from a suspended state to do location processing.
[UIApplication sharedApplication].applicationState == UIApplicationStateBackground
I ...