text stringlengths 525 43.7k | meta dict |
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Q:
How to have the json output sorted in my case
This is the command I am using on Ubuntu to extract data from the original json file:
cat results.json | jq -s -c 'sort_by(.name) | .[]'
And these are the output I got:
{"name":"I-1","node_id":"458d3d44-9d70-473d-87ae-9cd419277c92","console":5005}
{"name":"I-10"... | {
"pile_set_name": "StackExchange"
} |
Q:
Duplicates returned in query on child object
I have a data structure in my document like this (note this is simplified for brevity):
{
"id": "c1c1c1c1-c1c1-c1c1-c1c1-c1c1c1c1c1c1",
"name": "Bruce Banner",
"accountId": "a1a1a1a1-a1a1-a1a1-a1a1-a1a1a1a1a1a1",
"contributors": [{
"accountId": "... | {
"pile_set_name": "StackExchange"
} |
Q:
cocoa - screen not refreshing after CGEventPost mouse click
I am programatically generating mouse clicks when a user clicks a certain keyboard key (CapsLock).
So I do a left mouse down when CapsLock is switched on, then a left mouse up when CapsLock is switched off.
This behaves correctly in that if I for example ... | {
"pile_set_name": "StackExchange"
} |
Q:
Why are there so many errors (missing \right or extra \right)?
I've counted and checked but can't seem to find the problem.
\begin{flalign*}
u_0(x,\ t)\ =&\ x\left[t\ +\ \frac{t^3}{3}\right],\\
u_1(x,\ t)\ =&\ x\left[t\ -\ \frac{2t^5}{15}\ -\ \frac{t^7}{63}\ -\ \frac{t^{2-\alpha}}{\Gamma(3\ -\ \alpha)}\ -\ \frac{2... | {
"pile_set_name": "StackExchange"
} |
Q:
TreeTableView cells does not get updated when underlying data changes
I am writing a Market Watch program which displays live quotes in a JFXTreeTableView, but when I update the data in the ObservableList, it doesn't get updated in the JFXTreeTableView. The changeDataDemo() method is actually tracking changes in t... | {
"pile_set_name": "StackExchange"
} |
Q:
How to test whether $e^{3x^{2}} + \frac {1}{1+3x^2} - 2\cos(x^2)$ is $o(x^3)$?
From what I learned, $\lim_{x \rightarrow 0} \frac {f(x)}{x^3} = 0$ tells $f(x) = o(x^3)$
In this case, I have tried to compute $\lim_{x \rightarrow 0} \frac {e^{3x^{2}}}{x^3}$, but the limit seems not to exist.
Then I tried to combine ... | {
"pile_set_name": "StackExchange"
} |
Q:
Cache list size seems limited to 128 items
It looks like the CD object cache in our implementation is only allowed to contain 128 items. The logging below suggests that as soon the broker tries to cache #129, an old item is removed before the new item is added.
This is confirmed by other things we see: if we start... | {
"pile_set_name": "StackExchange"
} |
Q:
$ \lim\limits_{x \rightarrow \ + \infty}(\sqrt{x^2 + 2x} - \sqrt{x^2 - 7x})$
Find the limit: $$ \lim_{x \rightarrow \ + \infty}(\sqrt{x^2 + 2x} - \sqrt{x^2 - 7x})$$
I did the following:
\begin{align}
(\sqrt{x^2 + 2x} - \sqrt{x^2 - 7x}) = \frac{(\sqrt{x^2 + 2x} - \sqrt{x^2 - 7x})}{1} \cdot \frac{(\sqrt{x^2 + 2x} + ... | {
"pile_set_name": "StackExchange"
} |
Q:
How do I make a solution developed in Visual C++ 2010 work in Visual C++ 2012?
How can I make a .cpp solution developed in Visual C++ 2010 work in Visual C++ 2012, I get the error below everytime I try to build,
1>DinaPhysics-vc10-md-32-d.lib(smPrinter.obj) : error LNK2038: mismatch detected for '_MSC_VER': ... | {
"pile_set_name": "StackExchange"
} |
Q:
Prove $\frac{a}{b+c}+\frac{b}{c+d}+\frac{c}{d+a}+\frac{d}{a+b} \ge \frac{1}{2}$ where $a,b,c,d \ge 0$
Prove $\frac{a}{b+c}+\frac{b}{c+d}+\frac{c}{d+a}+\frac{d}{a+b} \ge \frac{1}{2}$ where $a,b,c,d \ge 0$
My attempt:I used two ways but I get to a wrong answer.
My first way:We know that $\frac{a}{b}+\frac{b}{a} \ge ... | {
"pile_set_name": "StackExchange"
} |
Q:
Why cudaMemcpy cost so much time?
I am writing cuda programs and after profiling one function like doing dot product on large matrix cost most of the time:
==27530== API calls:
Time(%) Time Calls Avg Min Max Name
64.90% 2.25369s 23 97.986ms 9.5590us 1.79533s cudaMemcpy
21.... | {
"pile_set_name": "StackExchange"
} |
Q:
Derivatives from the value to the power of $1/\rho$
I know from check information in the task that $$\frac 1 \rho\cdot {\frac{\partial}{\partial \phi}}(\cos^2\phi\cdot \tanh z) - \frac \partial {\partial z} \left( \sin2\phi \cdot \ln \sqrt[{\Large\,\rho\,}] \frac{\cosh\rho}{\cosh z} \right)=0$$
After calculation... | {
"pile_set_name": "StackExchange"
} |
Q:
Seasonal weather data
I have some twenty years of weather data with daily average temperature. I would like to make a histogram with aggregated monthly average for the whole period. I tried to do something like this https://www.wolfram.com/language/11/time-series-processing/trends-and-seasonalities.html?product=la... | {
"pile_set_name": "StackExchange"
} |
Q:
Parse JSON to store in ruby on rails database
The string is of the form
{"session":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110,"prettyTime":"Wed Feb 19 2014 21:08:13 GMT-0500 (EST)","timeDrift":0,"event":"Started session"},{"session":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392844105595,"pret... | {
"pile_set_name": "StackExchange"
} |
Q:
Find all possible two-way associations/relations between four numbers
Given four numbers {1,2,3,4}, how to find all possible two-way associations/relations between them? I calculate them manually as in below (50 in total) but I would like to know whether a mathematical formula exists to find them? And how about g... | {
"pile_set_name": "StackExchange"
} |
Q:
Como obter múltiplos JSONObject com a mesma key?
Basicamente, eu tenho este JSON:
{"gameId":467366059,"mapId":11,"gameMode":"CLASSIC","gameType":"MATCHED_GAME","gameQueueConfigId":4,"participants":[{"teamId":100,"spell1Id":4,"spell2Id":14,"championId":157,"profileIconId":588,"summonerName":"MEDAUMASKINCOPY","bot":... | {
"pile_set_name": "StackExchange"
} |
Q:
Create a function to manually calculate VIF values in R
I need a little help, I'm a newbie in R.
I am using the plspm package to generate a PLS-SEM (PLS-PM) model.
The package does not provide a VIF function to assess collinearity of the indicators (variables) of the Latent Variables (constructs)
I want to create ... | {
"pile_set_name": "StackExchange"
} |
Q:
Local Storage edit not working
localStorage.setItem('gameState', '{"
grid ":{"
size ":4,"
cells ":[[{"
position ":{"
x ":0,"
y ":0},"
value ":1024},{"
position ":{"
x ":0,"
y ":1},"
value ":1024},{"
position ":{"
x ":0,"
y ":2},"
value ":1024},{"
position ":{"
x ":0,"
y ":3},"
value ":1024}],[{"
position ":{"
x ":... | {
"pile_set_name": "StackExchange"
} |
Q:
Aggregating across multiple fields
I thought I had this figured out, but it's eluding me. There's a MySQL database backending a web app that collects user surveys of various theme parks. There's a series of 30 questions, some have radio-button style multiple choice and some are checkbox-style. The responses are al... | {
"pile_set_name": "StackExchange"
} |
Q:
Simpler way of computing the first homology group of $\Delta^4$ (without the interior)?
Here's my attempt. The first part (computing $Z_1$) feels like it's far too complicated. First of all - is my work correct? And second, is there a simpler way of doing this?
Let's label the $0$-simplices $(v_1,...,v_5)$, $1$-si... | {
"pile_set_name": "StackExchange"
} |
Q:
integrals with error function
Can anyone help me to compute these integrals?
\begin{equation}
\int_0^t\frac{1}{x}\exp\left(-\frac{a^2}{x}\right)
\operatorname{erf}\left(\frac{b}{\sqrt{x}}\right)\,dx
\end{equation}
here $\operatorname{erf}(\cdot)$ is error function.
I have already tried to take this integral by a ... | {
"pile_set_name": "StackExchange"
} |
Q:
Calculate $\sum_{k=1}^{n} \frac{1}{1+k^2}$
Calculate the sum: $$\sum_{k=1}^{n} \frac{1}{1+k^2}$$
I'm supposed to calculate it without using functions like Gamma, Zeta, Digamma, etc...
What I tried:
$$\sum_{k=1}^{n} \frac{1}{1+k^2}=\sum_{k=1}^{n} \frac{1}{(k+i)(k-i)}=\frac{1}{2i}\sum_{k=1}^{n}\bigg( \frac{1}{k-i}... | {
"pile_set_name": "StackExchange"
} |
Q:
AspNet Categorize the messages by UserName when asking for Query
My database is structured as below
public partial class AspNetUserMessage
{
public string From { get; set; }
public string To { get; set; }
public string Text { get; set; }
public System.DateTime SentDate { get; se... | {
"pile_set_name": "StackExchange"
} |
Q:
Deploying ember-rails to Heroku - TypeError: Cannot read property 'typeKey' of undefined
Part of the page loads then blank and I get the following error.
TypeError: Cannot read property 'typeKey' of undefined
at Ember.Object.extend.modelFor (http://my-app.herokuapp.com/assets/manifest-docs-cbb67138a1a7e2bbc15f... | {
"pile_set_name": "StackExchange"
} |
Q:
When and how is collectionView:viewForSupplementaryElementOfKind:atIndexPath: called?
I'm trying to implement a native-Calendar-app-like timeline view with UICollectionView and custom layout. And I'm new to it.
Here is where my problem come from.
I'm using Decoration View to implement those background gridlines, a... | {
"pile_set_name": "StackExchange"
} |
Q:
Showing $\det(aM+bN)-\det(aM)-\det(bN)=ab\left[\det(M+N)-\det(M)-\det(N)\right]$
Why is $\det(aM+bN)-\det(aM)-\det(bN)=ab\left[\det(M+N)-\det(M)-\det(N)\right]$
$M,N$ are $2\times 2$ matrices, $a,b\in K$ for some field $K$. If I write $M=(m_{ij})_{i,j}$ for $\ 1\le i,j\le2$ then it is true, but a a long computati... | {
"pile_set_name": "StackExchange"
} |
Q:
cells in collection view are not visible
Here is the code of the collection view:
- (void)viewDidLoad
{
[super viewDidLoad];
...
[_teamsCollection registerClass:[MWTeamCollectionCell class] forCellWithReuseIdentifier:@"Cell"];
}
#pragma mark data source and delegate methods of collection view
-(NSInte... | {
"pile_set_name": "StackExchange"
} |
Q:
PDF Creation in Cocoa
Here with below code PDF gets created but i am able to write in PDF.But i am not able to render NSView in PDF
CGContextRef aCgPDFContextRef = [self createPDFContext:CGRectMake(0, 0, 612, 892) path:(CFStringRef)filepath];
CGContextBeginPage(aCgPDFContextRef,nil);
//Draw view into PDF
NSView ... | {
"pile_set_name": "StackExchange"
} |
Q:
Return rows that contain at least one element satisfying a condition -- Using dplyr::filter iterating on multiple columns -- filter and apply
I have this dataset:
dat <- structure(list(Date.1 = c(NA, NA, NA, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7), Date.2 = c(NA, NA, NA, 7, 7, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6), Date.3 =... | {
"pile_set_name": "StackExchange"
} |
Q:
Can't stop navigation bar covering pushed view - why is it happening?
That eureka moment has well and truly eluded me with this problem. I have created a NavigationController in code. Attached a rootviewcontroller, which creates a tableview (also in code). This is all working as expected. The tableview presents, s... | {
"pile_set_name": "StackExchange"
} |
Q:
How do I find the term of a recursive sequence?
I have $\{a_n\}$ the following sequence:
$a_1 =-1$
$a_k a_{k+1} = - a_k - \frac{1}{4}$
How can I find $a_1 a_2 \cdots a_n$?
A:
$a_{k+1} = -\frac{4a_k+1}{4a_{k}}$
$a_2 = -3/4$
$a_3 = -2/3=-4/6$
$a_4 = -5/8$
$a_5 = -3/5 = -6/10$
$a_6 = -7/12$
So, we prove that $a_n =... | {
"pile_set_name": "StackExchange"
} |
Q:
Correct regex for matching the string with max number value
I am trying to figure out a way to match all the strings using regular expressions like below
Input String:
https://subdomain.domain.com/e8cf09b4763e03d208dfd21121baacd4/domain_p6amv8xJVr1qto1_500.txt
https://subdomain.domain.com/e8cf09b4763e03d20... | {
"pile_set_name": "StackExchange"
} |
Q:
php mongo aggregate project to date field
In php I have the following mongo aggregate funnction:
array(
array(
'$match' => array(
"i" => array('$in' => $valRefId),
"date" => array('$gt'=> $mongotimestart , '$lte'=> $mongotimeend),
),
),
array(
'$project'... | {
"pile_set_name": "StackExchange"
} |
Q:
analysis complex
I need to show that the function $z^n$ with $n \in \mathbb{Z}$, is entire, using the conditions of Cauchy-Riemann. My problem is to calculate the partial derivatives of this function.
Can someone help me?
Thank you.
A:
Entire function.
if $f(z) = u + iv$ then $\frac {\partial u}{\partial x} = \... | {
"pile_set_name": "StackExchange"
} |
Q:
error while starting jboss 7.1
Unable to set property fileName on class org.jboss.logmanager.handlers.FileHandler: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
... | {
"pile_set_name": "StackExchange"
} |
Q:
Calculate: $\lim _{x\to \infty }\left(\frac{\sqrt{x^3+4}+\sin \left(x\right)}{\sqrt{x^3+2x^2+7x+11}}\right)$.
Calculate:
$$\lim _{x\to \infty }\left(\frac{\sqrt{x^3+4}+\sin \left(x\right)}{\sqrt{x^3+2x^2+7x+11}}\right)$$
Here's my attempt:
I first tried to the statement up. I first let $f(x)=\left(\frac{\sqrt{x^3... | {
"pile_set_name": "StackExchange"
} |
Q:
Show $ \int_0^\infty\left(1-x\sin\frac 1 x\right)dx = \frac\pi 4 $
How to show that
$$
\int_0^\infty\left(1-x\sin\frac{1}{x}\right)dx=\frac{\pi}{4}
$$
?
A:
Use
$$
\int \left(1-x \sin\left(\frac{1}{x}\right)\right) \mathrm{d} x = x - \int \sin\left(\frac{1}{x}\right) \mathrm{d} \frac{x^2}{2} = x - \frac{x^2}{2... | {
"pile_set_name": "StackExchange"
} |
Q:
Java 8 streams maintain specific map key order return from group by operation
I have a list with collections of TitleIsbnBean objects. I wrote the following code snippet to group by this collection by learning area type as below.
titleListByLearningArea = nonPackageIsbnList.stream()
.collect(groupingBy(Title... | {
"pile_set_name": "StackExchange"
} |
Q:
Gerar todas as trocas de letras possíveis em uma palavra
Preciso criar uma função que gere todas as possiveis trocas de letras que gerem palavras com o mesmo som:
Palavra: Feijoada
Possibilidades: Feigoada, Feyjoada, Feijoada, Feygoada
Porém não estou conseguindo fazer isso, minha função retorna apenas uma palav... | {
"pile_set_name": "StackExchange"
} |
Q:
DynamoDb scan not working properly
I am trying to fetch items from the dynamoDb. However when I fetch single item using partiton key everything works fine but when I try to fetch all the items in dynamo db using scan I encouter an error. Following is the code what I am trying to do:
public List<PageCmsDomain> ... | {
"pile_set_name": "StackExchange"
} |
Q:
Switching the order of differential operators
A function $f(x,y)$ is transformed to variables $(u,v)$ with $x=uv$ and $y=\dfrac{u}{v}$ so the first partial derivative with respect to $u$ is $$\frac{\partial f}{\partial u}=v\frac{\partial f}{\partial x}+\frac1v\frac{\partial f}{\partial y}\tag{1}$$ Show that the se... | {
"pile_set_name": "StackExchange"
} |
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