silly | Silly is a filesystem based Object Document Mapper | File Utils library
kandi X-RAY | silly Summary
kandi X-RAY | silly Summary
Silly is a filesystem based Object Document Mapper. Use it to query a directory like you would a database -- useful for static websites.
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Top functions reviewed by kandi - BETA
- Convert files to sort order .
- Finds files in given directory
- Create a cache from cache
- Fetches data from date
- Perform a filter
- Create a new Page instance .
- returns a list of directories
- Render the page content .
- Merge metadata data
- Parses the datetime datetime
silly Key Features
silly Examples and Code Snippets
Community Discussions
Trending Discussions on silly
QUESTION
In Python, is there a way to distinguish between strings and other iterables of strings?
A str
is valid as an Iterable[str]
type, but that may not be the correct input for a function. For example, in this trivial example that is intended to operate on sequences of filenames:
ANSWER
Answered 2022-Mar-29 at 06:36This issue has been discussed since at least July 2016. On a proposal to distinguish between str
and Iterable[str]
, Guido van Rossum writes:
Since
str
is a valid iterable ofstr
this is tricky. Various proposals have been made but they don't fit easily in the type system.
You'll need to list out all of the types that you want your functions to accept explicitly, using Union
(pre-3.10) or |
(3.10 and higher).
e.g. For pre-3.10, use:
QUESTION
This may be a silly question, but... I tried to implement printf
, but for some reason the output I get is not exactly what I expected. any idea what it could be? I would appreciate some help.
ANSWER
Answered 2022-Mar-23 at 23:19Seems that gcvt()
don't do exactly what printf()
do, at least with your compiler. Check it with a "real" printf
with the same value.
Since you didn't gave the numbers you used for the test (avoid getfloat()
and initialize directly i1
, i2
, noi1
and noi2
with required constants in your question), I can't run it and tell you why exactly - or if it even happens with my own compiler.
Usually, the source code for printf
is at least two times bigger than yours, so you may have missed some vicious subcases. If I remember well, printf
has code to decode an IEEE-754 directly and don't rely on gcvt
.
QUESTION
Since upgrading to version 2.14.5 of the Cosmos DB emulator, I'm seeing high CPU usage by what appears to be the tray icon process (Microsoft.Azure.Cosmos.Emulator.exe). See below, using up most of a CPU core constantly on an Intel i9-12900K. This was an upgrade from 2.14.4 on Windows 11.
Anyone from the emulator team know what might be going on? Seems like the process is doing something silly, given the system is otherwise quiet and the process is not actually doing anything related to serving requests.
Also worth noting is that opening the "About Azure Cosmos Emulator" dialog immediately drops the CPU usage to 0. When closing the dialog, usage jumps back.
...ANSWER
Answered 2022-Mar-21 at 13:30This appears to have been fixed with release of version 2.14.6
QUESTION
Recently I face an issues to install my dependencies using latest Node and NPM on my MacBook Air M1 machine. Then I found out M1 is not supported latest Node version. So my solution, to using NVM and change them to Node v14.16
Everything works well, but when our team apply new eslint configuration. Yet, I still not sure whether eslint was causes the error or not.
.eslintrc ...ANSWER
Answered 2022-Mar-17 at 00:11I had a similar problem with another module.
The solution I found was to update both node (to v16) and npm (to v8).
For Node, I used brew (but nvm should be OK).
For npm, I used what the official doc says :
npm install -g npm@latest
QUESTION
I was looking for the canonical implementation of MergeSort on Haskell to port to HOVM, and I found this StackOverflow answer. When porting the algorithm, I realized something looked silly: the algorithm has a "halve" function that does nothing but split a list in two, using half of the length, before recursing and merging. So I thought: why not make a better use of this pass, and use a pivot, to make each half respectively smaller and bigger than that pivot? That would increase the odds that recursive merge calls are applied to already-sorted lists, which might speed up the algorithm!
I've done this change, resulting in the following code:
...ANSWER
Answered 2022-Jan-27 at 19:15Your split
splits the list in two ordered halves, so merge
consumes its first argument first and then just produces the second half in full. In other words it is equivalent to ++
, doing redundant comparisons on the first half which always turn out to be True
.
In the true mergesort the merge actually does twice the work on random data because the two parts are not ordered.
The split
though spends some work on the partitioning whereas an online bottom-up mergesort would spend no work there at all. But the built-in sort tries to detect ordered runs in the input, and apparently that extra work is not negligible.
QUESTION
I have a vanilla Javascript class that builds a bunch of HTML, essentially a collection of related HTMLElement objects that form the user interface for a component, and appends them to the HTML document. The class implements controller logic, responding to events, mutating some of the HTMLElements etc.
My gut instinct (coming from more backend development experience) is to store those HTMLElement objects inside my class, whether inside a key/value object or in an array, so my class can just access them directly through native properties whenever it's doing something with them. But everything I look at seems to follow the pattern of relying on document selectors (document.getElementById
, getElementsByClassName
, etc etc). I understand the general utility of that approach but it feels weird to have a class that creates objects, discards its own references to them, and then just looks them back up again when needed.
A simplified example would look like this:
...ANSWER
Answered 2022-Jan-22 at 09:00In general, you should always cache DOM elements when they're needed later, were you using OOP or not. DOM is huge, and fetching elements continuously from it is really time-consuming. This stands for the properties of the elements too. Creating a JS variable or a property to an object is cheap, and accessing it later is lightning-fast compared to DOM queries.
Many of the properties of the elements are deep in the prototype chain, they're often getters, which might execute a lot of hidden DOM traversing, and reading specific DOM values forces layout recalculation in the middle of JS execution. All this makes DOM usage slow. Instead, create a simplified JavaScript model of the page, and store all the needed elements and values to the model whenever possible.
A big part of OOP is just keeping up states, that's the key of the model too. In the model you keep up the state of the view, and access the DOM only when you need to change the view. Such a model will prevent a lot of "layout trashing", and it allows you to bind data to elements without actually revealing it in the global namespace (ex. Map object is a great tool for this). Nothing beats good encapsulation when you've security concerns, it's an effective way ex. to prevent self-XSS. Additionally, a good model is reusable, you can use it where ever the functionality is needed, the end-user just parametrizes the model when taken into use. That way the model is almost independent from the used markup too, and can also be developed independently (see also Separation of concerns).
A caveat of storing DOM elements into object properties (or into JS variables in general) is, that it's an easy way to create memory leaks. Such model objects are usually having long life-time, and if elements are removed from the DOM, the references from the object have to be deleted as well in order to get the removed elements being garbage-collected.
In practice this means, that you've to provide methods for removing elements, and only those methods should be used to delete elements. Additionally to the element removal, the methods should update the model object, and remove all the unused element references from the object.
It's notable, that when having methods handling existing elements, and specifically when creating new elements, it's easy to create variables which are stored in closures. When such a stored variable contains references to elements, they can't be removed from the memory even with the aforementioned removing methods. The only way is to avoid creating these closures from the beginning, which might be a bit easier with OOP compared to other paradigms (by avoiding variables and creating the elements directly to the properties of the objects).
As a sidenote, document.getElementsBy*
methods are the worst possible way to get references to DOM elements. The idea of the live collection of the elements sounds nice, but the way how those are implemented, ruins the good idea.
QUESTION
I have two enums:
Main Menu Options ...ANSWER
Answered 2022-Jan-03 at 19:57This is probably one of the cases where you need to pick one between being DRY and using enums.
Enums don't go very far as far as code reuse is concerned, in Java at least; and the main reason for this is that primary benefits of using enums are reaped in static code - I mean static as in "not dynamic"/"runtime", rather than static
:). Although you can "reduce" code duplication, you can hardly do much of that without introducing dependency (yes, that applies to adding a common API/interface, extracting the implementation of asListString
to a utility class). And that's still an undesirable trade-off.
Furthermore, if you must use an enum (for such reasons as built-in support for serialization, database mapping, JSON binding, or, well, because it's data enumeration, etc.), you have no choice but to duplicate method declarations to an extent, even if you can share the implementation: static methods just can't be inherited, and interface methods (of which getMessage
would be one) shall need an implementation everywhere. I mean this way of being "DRY" will have many ways of being inelegant.
If I were you, I would simply make this data completely dynamic
QUESTION
I want to be able to pass a function an undefined number of arguments via ...
but also to be able to pass it a vector
. Here is a silly example:
ANSWER
Answered 2021-Dec-30 at 17:38How about testing if ...
is of length 1 and if the only argument passed through is a vector? If not so, then consider ...
a list of scalers and capture them with lst(...)
.
QUESTION
Today I was using a stream that was performing a parallel()
operation after a map, however; the underlying source is an iterator which is not thread safe which is similar to the BufferedReader.lines implementation.
I originally thought that trySplit would be called on the created thread, however; I observed that the accesses to the iterator have come from multiple threads.
By example, the following silly iterator implementation is just setup with enough elements to cause splitting and also keeps track of the unique threads that accessed the hasNext
method.
ANSWER
Answered 2021-Dec-13 at 17:33Thread safety does not necessarily imply being accessed by only one thread. The important aspect is that there is no concurrent access, i.e. no access by more than one thread at the same time. If the access by different threads is temporally ordered and this ordering also ensures the necessary memory visibility, which is the responsibility of the caller, it still is a thread safe usage.
The Spliterator
documentation says:
Despite their obvious utility in parallel algorithms, spliterators are not expected to be thread-safe; instead, implementations of parallel algorithms using spliterators should ensure that the spliterator is only used by one thread at a time. This is generally easy to attain via serial thread-confinement, which often is a natural consequence of typical parallel algorithms that work by recursive decomposition.
The spliterator doesn’t need to be confined to the same thread throughout its lifetime, but there should be a clear handover at the caller’s side ensuring that the old thread stops using it before the new thread starts using it.
But the important takeaway is, the spliterator doesn’t need to be thread safe, hence, the iterator wrapped by a spliterator also doesn’t need to be thread safe.
Note that a typical behavior is splitting and handing over before starting traversal, but since an ordinary Iterator
doesn’t support splitting, the wrapping spliterator has to iterate and buffer elements to implement splitting. Therefore, the Iterator
experiences traversal by different threads (but one at a time) when the traversal has not been started from the Stream
implementation’s perspective.
That said, the lines()
implementation of BufferedReader
is a bad example which you should not follow. Since it’s centered around a single readLine()
call, it would be natural to implement Spliterator
directly instead of implementing a more complicated Iterator
and have it wrapped via spliteratorUnknownSize(…)
.
Since your example is likewise centered around a single poll()
call, it’s also straight-forward to implement Spliterator
directly:
QUESTION
I've got a MVVM-ish application which ended up with a model with way too many property change notifications. Specifically, I'm sometimes missing some notifications because there's too many of them.
For example I end up with properties like this:
...ANSWER
Answered 2021-Sep-28 at 10:26You may write a NotifyPropertyChanged method that accepts multiple property names. It does not really reduce the amount of code, but at least allows to make only one method call.
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