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What is the best way to conditionally apply a class?
... an li for each element and a property on the controller called selectedIndex . What would be the best way to add a class to the li with the index selectedIndex in AngularJS?
...
Converting String to Int with Swift
...ed to check if the collection is not empty.
text!.remove(at: text!.index(before: text!.endIndex))
// sends an editingChanged action to force the textfield to be updated
sendActions(for: .editingChanged)
}
@objc func editingChanged() {
guard value <= maxValu...
Pass Variables by Reference in Javascript
...lo world"
You can iterate over the properties of an array with a numeric index and modify each cell of the array, if you want.
var arr = [1, 2, 3];
for (var i = 0; i < arr.length; i++) {
arr[i] = arr[i] + 1;
}
It's important to note that "pass-by-reference" is a very specific term. It...
How can I make git ignore future revisions to a file?
...
As many others have mentioned, a good modern solution is:
git update-index --skip-worktree default_values.txt
That will ignore changes to that file, both local and upstream, until you decide to allow them again with:
git update-index --no-skip-worktree default_values.txt
You can get a lis...
boost::flat_map and its performance compared to map and unordered_map
... flat land, whereas a standard unordered map just has to recreate the hash index, while the allocated data stays where it is. The disadvantage of course is that the memory is fragmented like hell.
The criterion of a rehash in an open address hash map is when the capacity exceeds the size of the buc...
What are the most common SQL anti-patterns? [closed]
...Human readable password fields, egad. Self explanatory.
Using LIKE against indexed
columns, and I'm almost tempted to
just say LIKE in general.
Recycling SQL-generated PK values.
Surprise nobody mentioned the
god-table yet. Nothing says
"organic" like 100 columns of bit
flags, large strings and inte...
Django - how to create a file and save it to a model's FileField?
...7.3
#Model
class MonthEnd(models.Model):
report = models.FileField(db_index=True, upload_to='not_used')
import csv
from os.path import join
#build and store the file
def write_csv():
path = join(settings.MEDIA_ROOT, 'files', 'month_end', 'report.csv')
f = open(path, "w+b")
#wipe ...
How can I split up a Git commit buried in history?
...use git stash to hide away the part you haven't committed (or stash --keep-index before you even commit it), test, then git stash pop to return the rest to the work tree. Keep making commits until you get all modifications committed, i.e. have a clean work tree.
Run git rebase --continue to proceed ...
Different types of thread-safe Sets in Java
...
1) The CopyOnWriteArraySet is a quite simple implementation - it basically has a list of elements in an array, and when changing the list, it copies the array. Iterations and other accesses which are running at this time continue with the old array, avoiding necessity of synchronization between...
Better techniques for trimming leading zeros in SQL Server?
...
SUBSTRING(str_col, PATINDEX('%[^0]%', str_col+'.'), LEN(str_col))
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