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EF Migrations: Rollback last applied migration?
...some clarification to this thread:
Update-Database -TargetMigration:"name_of_migration"
What you are doing above is saying that you want to rollback all migrations UNTIL you're left with the migration specified. Thus, if you use GET-MIGRATIONS and you find that you have A, B, C, D, and E, then u...
Identify if a string is a number
...you can discard the out parameter
var isNumeric = int.TryParse("123", out _);
The var s can be replaced by their respective types!
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...URLSession sharedSession] dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if (data) {
UIImage *image = [UIImage imageWithData:data];
if (image) {
dispatch_async(dispatch_...
Change name of folder when cloning from GitHub?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Deleting multiple elements from a list
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As a function:
def multi_delete(list_, *args):
indexes = sorted(list(args), reverse=True)
for index in indexes:
del list_[index]
return list_
Runs in n log(n) time, which should make it the fastest correct solution yet.
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Using PowerShell to write a file in UTF-8 without the BOM
...:
For convenience, here's advanced function Out-FileUtf8NoBom, a pipeline-based alternative that mimics Out-File, which means:
you can use it just like Out-File in a pipeline.
input objects that aren't strings are formatted as they would be if you sent them to the console, just like with Out-File...
How to clear APC cache entries?
... apc_clear.php to the web directory, accesses it, then deletes it. This is based off of a Symfony task. In the Symfony version, calls are made to the Symfony form of copy and unlink, which handle errors. You may want to add checks that they succeed.
copy($apcPaths['data'], $apcPaths['web']); //'dat...
How to get body of a POST in php?
...dy of a POST or PUT request (or any other HTTP method):
$entityBody = file_get_contents('php://input');
Also, the STDIN constant is an already-open stream to php://input, so you can alternatively do:
$entityBody = stream_get_contents(STDIN);
From the PHP manual entry on I/O streamsdocs:
ph...
How does zip(*[iter(s)]*n) work in Python?
... ^
And since you ask for a more verbose code sample:
chunk_size = 3
L = [1,2,3,4,5,6,7,8,9]
# iterate over L in steps of 3
for start in range(0,len(L),chunk_size): # xrange() in 2.x; range() in 3.x
end = start + chunk_size
print L[start:end] # three-item chunks
Following ...
.gitignore all the .DS_Store files in every folder and subfolder
I've added .DS_Store to the .gitignore file, but it seems that it is only ignoring .DS_Store in the root directory, not in every folder and subfolder.
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