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Difference between filter and filter_by in SQLAlchemy
... filter on users.id. Instead, it will evaluate id == id as True and return all users. You need to use .filter(users.id == id) (as demoed above). I made this mistake earlier today.
– Nico Cernek
Feb 22 '19 at 23:00
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Generate a random date between two other dates
... asking about specifying two dates, and in my opinion that's a more useful API.
– Boris
Aug 30 '19 at 7:12
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What exactly does the post method do?
...() : Starts executing the active part of the class' code. This method is called when a thread is started that has been created with a class which implements Runnable.
getView().post(new Runnable() {
@Override
public void run() {
getView().startAnimation(a);
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Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test
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Locate the dependencies you're missing with mvn dependency:tree, then install them manually, and build your project with the -o (offline) option.
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What does it mean to “program to an interface”?
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There are some wonderful answers on here to this questions that get into all sorts of great detail about interfaces and loosely coupling code, inversion of control and so on. There are some fairly heady discussions, so I'd like to take the opportunity to break things down a bit for understanding ...
UICollectionView inside a UITableViewCell — dynamic height?
...mic number of items, resulting in a height which must be calculated dynamically as well. However, I am running into problems trying to calculate the height of the embedded UICollectionView .
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Is there a documented way to set the iPhone orientation?
...s even your account removed. I wouldn't risk that just to use undocumented API.
– Ivan Vučica
Dec 8 '11 at 18:07
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Static implicit operator
...sion, it can also cause strange/surprising bugs, and can confuse a (human) API user. By way of example, there are very few usages of implicit conversions in the BCL. Use with discretion!
– Drew Noakes
Aug 25 '15 at 12:49
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Regex empty string or email
...hing an email address (that is, if you want wrong code that happens to (usually) work), use the regular-expressions.info link someone else submitted.
As for the empty string, ^$ is mentioned by multiple people and will work fine.
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What exactly can cause an “HIERARCHY_REQUEST_ERR: DOM Exception 3”-Error?
... type of response somehow (e.g. res.setContentType("text/html") in Servlet API).
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