As hash library is moved seperate. so how should i change this code
to work.
var Hash = require('traverse/hash');
Hash({ a : 1, b : 2 })
.map(function (v) {
return v + 1
})
.update({ b : 30, c : 42 })
.filter(function (v) {
return v % 2 == 0
})
.tap(function () {
var anyC = this.some(function (value, key) {
return key == 'c'
}); // or just this.keys.some, but anyways
console.log(anyC ? "There's a C key this far." : "There's no C key this far." );
})
.items ;
var Hash = require('hashish');
Related
In lit/lit-html/lit-element, a standard component is the TemplateResult (usually HTMLTemplateResult), created like:
function renderMe(msg) {
return html`<div>Hello ${msg}!</div>`;
}
and of course the power and efficiency of the library is that subsequent calls will reuse the same <div> Element and only replace the changed fragments.
For testing the renderMe() function above, however, it would be helpful to be able to see the return value as a standard string, like:
assert.equal(RENDER_AS_STRING(renderMe('kimiko')), '<div>Hello kimiko!</div>');
and fix any bugs in the function before testing how it renders into the browser itself.
Is there a function like RENDER_AS_STRING either in lit itself or in a testing library? I have searched and not found one.
The result of execution contains html strings and values that alternate:
We can combine them in the same order:
function renderMe(msg) {
return html`<div>Hello ${msg}!</div>`;
}
const getRenderString = (data) => {
const {strings, values} = data;
const v = [...values, ''] // + last emtpty part
return strings.reduce((acc,s, i) => acc + s + v[i], '')
}
console.log(getRenderString(renderMe('SO')))
You can test it in the playground
And the recursive version
import {html, css, LitElement} from 'lit';
function renderMe(msg) {
return html`<p>Hello ${msg}!</p>`;
}
function renderBlock(msg) {
return html`<div>${renderMe(msg)}</div>`;
}
const getRenderString = (data) => {
const {strings, values} = data;
const v = [...values, ''].map(e => typeof e === 'object' ? getRenderString(e) : e )
return strings.reduce((acc,s, i) => acc + s + v[i], '')
}
document.getElementById('output').textContent = getRenderString(renderBlock('SO'))
#Daniil Loban's answer works great if the arguments are strings, but if they might themselves be TemplateResults or arrays of TemplateResults (which are all allowed by spec), it needs a more complex answer:
export function template_as_string(data) {
const {strings, values} = data;
const value_list = [...values, '']; // + last empty part
let output = '';
for (let i = 0; i < strings.length; i++) {
let v = value_list[i];
if (v._$litType$ !== undefined) {
v = template_as_string(v); // embedded Template
} else if (v instanceof Array) {
// array of strings or templates.
let new_v = '';
for (const inner_v of [...v]) {
new_v += template_as_string(inner_v);
}
v = new_v;
}
output += strings[i] + v;
}
return output;
}
does anyone have some bad experience with saving float via executeRaw batch operation? Or at least an idea of how to solve my problem: ExecuteRaw is saving numbers like 7.76e-322. Input is 157 and saved value is 7.76e-322.
const items = [{uniqueId: 1, price: 100},{uniqueId: 2, price: 200}];
const completeKeys: string[] = Object.keys(items[0]);
const updateFieldsMapper = (item: any) => {
return Prisma.sql`(${Prisma.join(
completeKeys.map((key: string) => item[key])
)})`;
};
const insertKeys = completeKeys.map((key) =>
key.toLocaleLowerCase() !== key ? `"${key}"` : `${key}`
);
let insertValues = completeKeys.map((item) => updateFieldsMapper(item));
const updateSet = completeKeys.reduce((updateSet: string[], key: string) => {
if (!ingnoredKeys.includes(key)) {
updateSet.push(`"${key}" = EXCLUDED."${key}"`);
}
return updateSet;
}, []);
try {
await prisma.$executeRaw`
INSERT INTO "Product" (${Prisma.raw(insertKeys.join(","))})
VALUES ${Prisma.join(insertValues)}
ON CONFLICT (uniqueId)
DO UPDATE SET ${Prisma.raw(updateSet.join(","))};`;
} catch (error) {
console.error(util.inspect(error, false, null, true));
Sentry.captureException(error);
}
Thank you very much
I have a Map to which I would like add elements only if they meet a condition.
For example, if for keys a and b, is there something that works like this?
Map myMap = {
if a is not null "a" : a,
if b is not null and be is not empty "b": b,
}
So a and b would not be in the map unless the condition is met
For example for react is goes something like this
const myMap = {
...(a != null && { a: a }),
...(b != null && b.length > 0 && { b: b }),
};
Try this in dartpad:
void main() {
for (var a in [null, 15]) {
for (var b in [null, '', 'hello']) {
var myMap = {
if (a != null) 'a': a,
if (b != null && b.isNotEmpty) 'b': b,
};
print('a = $a, b = $b, myMap = $myMap');
}
}
}
You can do absolutely the same in Dart!
return {
if (true) ...{'key': value},
};
Dartpad is very useful
void main() {
Map<String, String> myMap = new Map();
Map<String,String> array = {"a":"apple","b":"g"};
array.forEach((key,value){
value.length> 0 ? myMap.addAll({key: value}): "";
});
print(myMap);
}
It appears sap.ui.model.Sorter doesn't sort ISO-8859-1 characters correctly.
Below is an example where we create a list with one item pr character in the Norwegian alfabet. The output of this is not in the correct order, instead the order is "AÅÆBCDEFGHIJKLMNOØPQRSTUVWXYZ".
The expected results is the same order as when the alfabet variable is declared: "ABCDEFGHIJKLMOPQRSTUVWXYZÆØÅ"
How can we sort the model correctly?
JSBIN: https://jsbin.com/xuyafu/
var alfabet = "ABCDEFGHIJKLMOPQRSTUVWXYZÆØÅ"
var data = [];
for(var i=0; i< alfabet.length; i++){
data.push ({value:alfabet.charAt(i)});
}
var modelList = new sap.ui.model.json.JSONModel(data);
sap.ui.getCore().setModel(modelList);
var oSorter = new sap.ui.model.Sorter("value", null, null);
// Simple List in a Page
new sap.m.App({
pages: [
new sap.m.Page({
title: "Sorting with norwegian characters",
content: [
new sap.m.List("list", {
items: {
path: '/',
template: new sap.m.StandardListItem({
title: '{value}'
}),
sorter: oSorter
}
})
]
})
]
}).placeAt("content");
Based on the input from the comments on the question, it is straight forward to override the sorting function fnCompare to get the right order
var oSorter = new sap.ui.model.Sorter("value", null, null);
oSorter.fnCompare = function (a, b) {
if (a == b) {
return 0;
}
if (b == null) {
return -1;
}
if (a == null) {
return 1;
}
if (typeof a == "string" && typeof b == "string") {
return a.localeCompare(b, "nb");
}
if (a < b) {
return -1;
}
if (a > b) {
return 1;
}
return 0;
}
Here "nb" is the locale the sort is done with
If I have a doc which has an array which contains a items which represents counts for a day, perhaps like :-
{
data : [ {'20141102' : 2 },{'20141103' : 4 } ]
}
when I do an update, and I have a string '20141103' and then later a '20141104' I want to either inc the array entry or add a new array entry. Is this possible with an update?
Yes, it's feasible. I tried like this:
(run on mongo shell; both client and server are V2.6.4)
function tryAndFine(coll, key, value) {
var entry = {};
entry[key] = value;
var parent = 'data';
var prefix = parent + '.';
function incrementOnly() {
var criteria = {};
criteria[prefix + key] = {$exists : true};
var update = {};
update[prefix + "$." + key] = value;
var result = coll.update(criteria, {$inc : update});
// if increment fails, try to add a new one
if (result.nModified == 0) {
addNewElement();
}
}
function addNewElement() {
var criteria = {};
criteria[prefix + key] = {$exists : false};
var update = {};
update[parent] = entry;
var result = coll.update(criteria, {$push : update}, {upsert : true});
// if exists, try to increment the count
if (result.upserted == 0 && result.nModified == 0) {
incrementOnly();
}
}
// run entry
incrementOnly();
}
// test
var c = db.c;
c.drop();
tryAndFine(c, '20141103', 1);
tryAndFine(c, '20141103', 1);
tryAndFine(c, '20141104', 1);
tryAndFine(c, '20141105', 1);
tryAndFine(c, '20141104', 1);
// output
{
"_id" : ObjectId("54577e1a3502852bd4ad2395"),
"data" : [ {
"20141103" : 2
}, {
"20141104" : 2
}, {
"20141105" : 1
} ]
}