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BestPractice - Transform first character of a string into lower case
...ution is not optimized because string.Format is slow and you don't need it if you have a format that will never change. It also generates an extra string to covert the letter to lowercase, which is not needed.
The approach with "+ 32" is ugly / not maintainable as it requires knowledge of ASCII cha...
Python: split a list based on a condition?
...
good = [x for x in mylist if x in goodvals]
bad = [x for x in mylist if x not in goodvals]
is there a more elegant way to do this?
That code is perfectly readable, and extremely clear!
# files looks like: [ ('file1.jpg', 33L, '.jpg'), ('file...
How do you check if a selector matches something in jQuery? [duplicate]
In Mootools, I'd just run if ($('target')) { ... } . Does if ($('#target')) { ... } in jQuery work the same way?
11 Ans...
How can I convert a comma-separated string to an array?
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While split will work fine if you are sure you have elements in array, if you're expecting data from a server / database you will run into trouble since ''.split(',') has a length === 1 IE: ''.split(',') === ['']
– oportocala
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How to wait until an element exists?
...ionObserver((mutations) => {
mutations.forEach((mutation) => {
if (!mutation.addedNodes) return
for (let i = 0; i < mutation.addedNodes.length; i++) {
// do things to your newly added nodes here
let node = mutation.addedNodes[i]
}
})
})
observer.observe(documen...
htmlentities() vs. htmlspecialchars()
What are the differences between htmlspecialchars() and htmlentities() . When should I use one or the other?
12 Answers
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How to use random in BATCH script?
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Given the specific problem, you will very likely be using some kind of loop? Then you should indeed be using delayed expansion e.g. via SETLOCAL ENABLEDELAYEDEXPANSION and using !RANDOM! instead of %RANDOM%, like Eugene posted.
...
C# Sortable collection which allows duplicate keys
...ompare(TKey x, TKey y)
{
int result = x.CompareTo(y);
if (result == 0)
return 1; // Handle equality as beeing greater
else
return result;
}
#endregion
}
You will use it when instancing a new SortedList, SortedDictionary etc:
SortedLi...
How to check if a variable is not null?
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They are not equivalent. The first will execute the block following the if statement if myVar is truthy (i.e. evaluates to true in a conditional), while the second will execute the block if myVar is any value other than null.
The only values that are not truthy in JavaScript are the following (a...
Assign variable value inside if-statement [duplicate]
...can be assigned but not declared inside the conditional statement:
int v;
if((v = someMethod()) != 0) return true;
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