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What is the smallest possible valid PDF?
...iler<</Size 4/Root 1 0 R>>
Acrobat complains, but opens it. Now we're at 178 bytes.
Turns out that you don't need that /Size in the trailer. Now we're at 172:
%PDF-1.0
1 0 obj<</Type/Catalog/Pages 2 0 R>>endobj 2 0 obj<</Type/Pages/Kids[3 0 R]/Count 1>>endobj...
How can I truncate a datetime in SQL Server?
...rect way (old):
dateadd(dd, datediff(dd,0, getDate()), 0)
This is older now, but it's still worth knowing because it can also easily adapt for other time points, like the first moment of the month, minute, hour, or year.
This correct way uses documented functions that are part of the ansi standa...
What's the difference between Spring Data's MongoTemplate and MongoRepository?
...<User> yourCustomMethod() {
// custom implementation here
}
}
Now let your base repository interface extend the custom one and the infrastructure will automatically use your custom implementation:
interface UserRepository extends CrudRepository<User, Long>, CustomUserRepository {...
Convert an image to grayscale in HTML/CSS
...
Support for CSS filters has landed in Webkit. So we now have a cross-browser solution.
img {
filter: gray; /* IE6-9 */
-webkit-filter: grayscale(1); /* Google Chrome, Safari 6+ & Opera 15+ */
filter: grayscale(1); /* Microsoft Edge and Firefox 35+ */
}
/*...
How to pass an object into a state using UI-router?
... here for convenience:
christopherthielen: Yes, this should be working now in 0.2.13.
.state('foo', { url: '/foo/:param1?param2', params: { param3:
null } // null is the default value });
$state.go('foo', { param1: 'bar', param2: 'baz', param3: { id: 35,
name: 'what' } });
...
What is a good pattern for using a Global Mutex in C#?
...owEveryoneRule =
new MutexAccessRule( new SecurityIdentifier( WellKnownSidType.WorldSid
, null)
, MutexRights.FullControl
, AccessControlType.Allow
);
var s...
In git, is there a simple way of introducing an unrelated branch to a repository?
...tle more high-level than what's in any of the other answers.
git checkout now supports the --orphan option. From the man page:
git checkout [-q] [-f] [-m] --orphan <new_branch> [<start_point>]
Create a new orphan branch, named
<new_branch>, started from
<start_point>...
What does “hashable” mean in Python?
...
if it has hash value now what is hash value. can you give some example
– user1755071
Jan 26 '13 at 9:56
...
Do login forms need tokens against CSRF attacks?
...e they may not notice they are logged in via the host account
The attacker now has access to any data or metadata the victim "created" (intentionally or unintentionally) while their browser was logged in with the host account
As a pertinent example, consider YouTube. YouTube allowed users to see a...
How to create a trie in Python
... I'd stick with dict.setdefault() (it's underutilised and not nearly well-known enough), in part because it helps prevent bugs that are too easy to create with a defaultdict (where you'd not get a KeyError for non-existing keys on indexing). The only thing now that would make it useable for producti...