parameters

问题 How to achieve want I want below? The paramater pack I want to unpack is not in a function argument list but template argument list. #include <iostream> #include <array> const std::size_t SIZE = 10; template <int...ARGS> std::array<bool, SIZE> func() { std::array<bool, SIZE> b; // I want to set b[n] = true, where n takes on all values from ARGS... // what to put in here??? return b; } // Example of what I want to achieve: int main() { const std::array<bool, SIZE> b = func<1,3,7>(); // I want

问题 I'm facing a strange thing today. I used to use URLSearchParams() to extract the search params out of the URL. However, today, in my React app, it stopped working altogether when I used it as follows. Why params is an empty object here? any helpful advise is highly appreciated. // url of the web page is **http://localhost:3000/reset-password/?token=sks-4e5r-sklks-io** useEffect(() => { console.log(window.location.search) // output -> ?token=sks-4e5r-sklks-io const params = new URLSearchParams

问题 I'm facing a strange thing today. I used to use URLSearchParams() to extract the search params out of the URL. However, today, in my React app, it stopped working altogether when I used it as follows. Why params is an empty object here? any helpful advise is highly appreciated. // url of the web page is **http://localhost:3000/reset-password/?token=sks-4e5r-sklks-io** useEffect(() => { console.log(window.location.search) // output -> ?token=sks-4e5r-sklks-io const params = new URLSearchParams

问题 I have the powershell function below Function Test { Param ( [Parameter()] [string]$Text = "default text" ) Write-Host "Text : $($Text)" } And I would like to be able to call this function like below : Test -Text : should display the default text on the host Test -Text "another text" : should display the provided text on the host My issue is that the first syntax is not allowed in powershell .. Any ideas of how I can achieve this goal ? I would like a kind of 'switch' parameter that can take

问题 I want to parametrize an insert query with node.js for SQL Server. Unfortunately it will not work and I don't really know if it's a Node module issue or a syntax failure. Code: server.route({ method: 'POST', path: '/', handler: async (request, h) => { try { await pool.query("INSERT INTO sigfoxmessages(device,data,station,rssi,unix_timestamp) VALUES($1,$2,$3,$4,$5))" [request.payload.device, request.payload.data, request.payload.station, request.payload.rssi, request.payload.time]); return h

问题 I am not sure if this thing has a name, so I couldn't find any information online so far, although surely there is! Imagine my MWE: def PlotElementsDict(dictionary1, dictionary2, itemToPlot, title): # dictionary 1 and dictionary 2 are collections.OrderedDict with 'key':[1,2,3] # i.e. there values of the keys are lists of numbers list1 = [dictionary1[key][itemToPlot] for key in dictionary1.keys()] list2 = [dictoinary2[key][itemToPlot] for key in dictionary2.keys()] plt.plot(list1, label='l1, {

问题 Having problems passing parameters to an external bash script from a BashOperator. When I run a local command, the params are substituted correctly: log_cleanup = """ echo "{{ params.BASE_LOG_FOLDER }}" """ log_cleanup_task = BashOperator( task_id='log_cleanup_task', provide_context=True, bash_command = log_cleanup, params = {'BASE_LOG_FOLDER': "/var/opt"}, dag=dagInstance, ) prints: "/var/opt" (without the double quotes) But if I call an external bash script, the params don't substitute in.

问题 I am copying records from an Azure Storage Table (source) to Azure Storage Table (sink) everyday. So if I am executing the query on December 24th 2019 (UTC) for instance, then I want to copy records for December 23rd 2019 (UTC). The query works and is doing what I intend it to do. Here is the query: Timestamp ge datetime'2019-12-23T00:00Z' and Timestamp lt datetime'2019-12-24T00:00Z' In the query above, the Timestamp column is automatically stamped in the Azure Storage Table when a new record

问题 I am using gensim.models.ldamodel.LdaModel to perform LDA, but I do not understand some of the parameters and cannot find explanations in the documentation. If someone has experience working with this, I would love further details of what these parameters signify. Specifically, I do not understand: random_state update_every chunksize passes alpha per_word_topics I am working with a corpus of 500 documents which are roughly around 3-5 pages each (I unfortunately cannot share a snapshot of the

问题 Is it possible to cast out param arguments in C#? I have: Dictionary<string,object> dict; // but I know all values are strings string key, value; Roughly speaking (and if I didn't have static typing) I want to do: dict.TryGetValue(key, out value); but this obviously won't compile because it "cannot convert from 'out string' to 'out object'". The workaround I'm using is: object valueAsObject; dict.TryGetValue(key, out valueAsObject); value = (string) valueAsObject; but that seems rather