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What is the best way to implement nested dictionaries?
... requires a new instance whether it is used or not. However, Python (or at least CPython) is rather smart about handling unused and unreferenced new instances, for example, it reuses the location in memory:
>>> id({}), id({}), id({})
(523575344, 523575344, 523575344)
An auto-vivified defau...
Why all the Active Record hate? [closed]
...ed architecture (you sooner or later do divide your software in layers, at least in medium- to large-sized projects):
A1) the database itself, tables, relations, even some logic if the DBMS allows it (MySQL is also grown-up now)
A2) very often, there is more than a data store: file system (blobs i...
Open another application from your own (intent)
... activities, services, content providers and/or broadcast listeners. If at least one of them is running, the application is up and running (the process).
So, what you have to identify is how do you want to "start the application".
Ok... here's what you can try out:
Create an intent with action=M...
What's the key difference between HTML 4 and HTML 5?
...lay correctly (estimates place roughly 90% of pages on the net as being at least somewhat malformed).
So, HTML5 is attempting to discover and codify this error handling, so that browser developers can all standardize and greatly reduce the time and money required to display things consistently. As...
How can I have two fixed width columns with one flexible column in the center?
...
In the current implementation (at least in Chrome), you also need to ensure that the middle column has flex-grow defined (as say 1). Updated fiddle.
– baseten
Oct 2 '15 at 9:54
...
How to do stateless (session-less) & cookie-less authentication?
... the token itself might be some sort of a CSRF defense.
Last, but not the least, make sure you have some mechanism in the backend to purge expired tokens. This has been the bane of many applications in the past - a rapidly growing database of authentication tokens which never seems to go away. If y...
What is Normalisation (or Normalization)?
...gn, you can be guaranteed that the design will conform to 3NF at the very least. In many cases, the design will be fully normalized.
Where you may really want to apply the concepts taught under normalization is when you are given legacy data, out of a legacy database or out of files made up
How to implement a secure REST API with node.js
...Tful Authentication
Basically you need to choose between using API keys (least secure as the key may be discovered by an unauthorized user), an app key and token combo (medium), or a full OAuth implementation (most secure).
...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...ifference between Hash.new{[]} and Hash.new{|hash, key| hash[key]=[];}. At least on ruby 2.1.2 .
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What is the difference between display: inline and display: inline-block?
...ralization that seems wrong.
It is possible to set width and height to at least one inline element (that I can think of) – the <img> element.
Both accepted answers here and on this duplicate state that this is not possible but this doesn’t seem like a valid general rule.
Example:
i...