At first it seems as if JNZ means jump if not Zero (0), as in jump if zero flag is 1/set.
But in reality it means Jump (if) not Zero (is set).
If 0 = not set and 1 = set then just remember:
JNZ Jumps if the zero flag is not set (0)
Are you trying do a cross-domain AJAX call? Meaning, your service is not hosted in your same web application path? Your web-service must support method injection in order to do JSONP.
Your code seems fine and it should work if your web services and your web application hosted in the same domain.
When you do a $.ajax
with dataType: 'jsonp'
meaning that jQuery is actually adding a new parameter to the query URL.
For instance, if your URL is http://10.211.2.219:8080/SampleWebService/sample.do
then jQuery will add ?callback={some_random_dynamically_generated_method}
.
This method is more kind of a proxy actually attached in window
object. This is nothing specific but does look something like this:
window.some_random_dynamically_generated_method = function(actualJsonpData) {
//here actually has reference to the success function mentioned with $.ajax
//so it just calls the success method like this:
successCallback(actualJsonData);
}
Summary
Your client code seems just fine. However, you have to modify your server-code to wrap your JSON data with a function name that passed with query string. i.e.
If you have reqested with query string
?callback=my_callback_method
then, your server must response data wrapped like this:
my_callback_method({your json serialized data});
Galen Gidman has posted a really good solution to the problem of a responsive sticky footer that does not have a fixed height. You can find his full solution on his blog: http://galengidman.com/2014/03/25/responsive-flexible-height-sticky-footers-in-css/
HTML
<header class="page-row">
<h1>Site Title</h1>
</header>
<main class="page-row page-row-expanded">
<p>Page content goes here.</p>
</main>
<footer class="page-row">
<p>Copyright, blah blah blah.</p>
</footer>
CSS
html,
body { height: 100%; }
body {
display: table;
width: 100%;
}
.page-row {
display: table-row;
height: 1px;
}
.page-row-expanded { height: 100%; }
Primary key is a subset of super key. Which is uniquely define and other field are depend on it. In a table their can be just one primary key and rest sub set are candidate key or alternate keys.
Taking the value from Command line and showing THE INPUT IS DECIMAL/NON-DECIMAL and NUMBER or not:
NUMBER=$1
IsDecimal=`echo "$NUMBER" | grep "\."`
if [ -n "$IsDecimal" ]
then
echo "$NUMBER is Decimal"
var1=`echo "$NUMBER" | cut -d"." -f1`
var2=`echo "$NUMBER" | cut -d"." -f2`
Digit1=`echo "$var1" | egrep '^-[0-9]+$'`
Digit2=`echo "$var1" | egrep '^[0-9]+$'`
Digit3=`echo "$var2" | egrep '^[0-9]+$'`
if [ -n "$Digit1" ] && [ -n "$Digit3" ]
then
echo "$NUMBER is a number"
elif [ -n "$Digit2" ] && [ -n "$Digit3" ]
then
echo "$NUMBER is a number"
else
echo "$NUMBER is not a number"
fi
else
echo "$NUMBER is not Decimal"
Digit1=`echo "$NUMBER" | egrep '^-[0-9]+$'`
Digit2=`echo "$NUMBER" | egrep '^[0-9]+$'`
if [ -n "$Digit1" ] || [ -n "$Digit2" ]; then
echo "$NUMBER is a number"
else
echo "$NUMBER is not a number"
fi
fi
How to execute Python scripts in Windows?
You could install pylauncher. It is used to launch .py, .pyw, .pyc, .pyo files and supports multiple Python installations:
T\:> blah.py argument
You can run your Python script without specifying .py extension if you have .py, .pyw in PATHEXT environment variable:
T:\> blah argument
It adds support for shebang (#!
header line) to select desired Python version on Windows if you have multiple versions installed. You could use *nix-compatible syntax #! /usr/bin/env python
.
You can specify version explicitly e.g., to run using the latest installed Python 3 version:
T:\> py -3 blah.py argument
It should also fix your sys.argv
issue as a side-effect.
var array = string.split(',');
MDN reference, mostly helpful for the possibly unexpected behavior of the limit
parameter. (Hint: "a,b,c".split(",", 2)
comes out to ["a", "b"]
, not ["a", "b,c"]
.)
An arguable sanitized version of Craig McQueen's answer.
import sys, codecs
class EncodedOut:
def __init__(self, enc):
self.enc = enc
self.stdout = sys.stdout
def __enter__(self):
if sys.stdout.encoding is None:
w = codecs.getwriter(self.enc)
sys.stdout = w(sys.stdout)
def __exit__(self, exc_ty, exc_val, tb):
sys.stdout = self.stdout
Usage:
with EncodedOut('utf-8'):
print u'ÅÄÖåäö'
A beautiful hack.
You have two ways of making the image responsive.
- When an image is a background image.
#container{
width: 300px;
height: 300px;
background-image: url(http://images.fonearena.com/blog/wp-content/uploads/2013/11/Lenovo-p780-camera-sample-10.jpg);
background-size: cover;
background-repeat: no-repeat;
background-position: center;
}
<div id="container"><div>
Run it here
img
tag to put images as it is better than background-image
in terms of SEO as you can write keyword in the alt
of the img
tag. So here is you can make the image responsive.
- When image is in
img
tag.
#container{
max-width: 400px;
overflow: hidden;
}
img{
width: 100%;
object-fit: contain;
}
<div id="container">
<img src="http://images.fonearena.com/blog/wp-content/uploads/2013/11/Lenovo-p780-camera-sample-10.jpg" alt="your_keyword"/>
<div>
Run it here
You can use IPython.display.clear_output
to clear the output of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!
.
Without a code example it's not easy to give you working code. Probably buffering the latest n events is a good strategy. Whenever the buffer changes you can clear the cell's output and print the buffer again.
UPDATE 2020
Database Inspector (for Android Studio version 4.1). Read the Medium article
For older versions of Android Studio I recommend these 3 options:
In build.gradle:
dependencies {
// Stetho core
compile 'com.facebook.stetho:stetho:1.5.1'
//If you want to add a network helper
compile 'com.facebook.stetho:stetho-okhttp:1.5.1'
}
Initialize the library in the application object:
Stetho.initializeWithDefaults(this);
And you can view you database in Chrome from chrome://inspect
Thanks to the efforts of Vincent and work by Joey Hayes, I have this codepen working on android mobile that supports multiple fixed backgrounds
HTML:
<html>
<body>
<nav>Nav to nowhere</nav>
<article>
<section class="bg-img bg-img1">
<div class="content">
<h1>Fixed backgrounds on a mobile browser</h1>
</div>
</section>
<section class="solid">
<h3>Scrolling Foreground Here</h3>
</section>
<section>
<div class="content">
<p>Quid securi etiam tamquam eu fugiat nulla pariatur. Cum ceteris in veneratione tui montes, nascetur mus. Quisque placerat facilisis egestas cillum dolore. Ambitioni dedisse scripsisse iudicaretur. Quisque ut dolor gravida, placerat libero vel,
euismod.
</p>
</div>
</section>
<section class="solid">
<h3>Scrolling Foreground Here</h3>
</section>
<section class="footer">
<div class="content">
<h3>The end is nigh.</h3>
</div>
</section>
</article>
</body>
CSS:
* {
box-sizing: border-box;
}
body {
font-family: "source sans pro";
font-weight: 400;
color: #fdfdfd;
}
body > section >.footer {
overflow: hidden;
}
nav {
position: fixed;
top: 0;
left: 0;
height: 70px;
width: 100%;
background-color: silver;
z-index: 999;
text-align: center;
font-size: 2em;
opacity: 0.8;
}
article {
position: relative;
font-size: 1em;
}
section {
height: 100vh;
padding-top: 5em;
}
.bg-img::before {
position: fixed;
content: ' ';
display: block;
width: 100vw;
min-height: 100vh;
top: 0;
bottom: 0;
left: 0;
right: 0;
background-position: center;
background-size: cover;
z-index: -10;
}
.bg-img1:before {
background-image: url('https://res.cloudinary.com/djhkdplck/image/upload/v1491326836/3balls_1280.jpg');
}
.bg-img2::before {
background-image: url('https://res.cloudinary.com/djhkdplck/image/upload/v1491326840/icebubble-1280.jpg');
}
.bg-img3::before {
background-image: url('https://res.cloudinary.com/djhkdplck/image/upload/v1491326844/soap-bubbles_1280.jpg');
}
h1, h2, h3 {
font-family: lato;
font-weight: 300;
text-transform: uppercase;
letter-spacing: 1px;
}
.content {
max-width: 50rem;
margin: 0 auto;
}
.solid {
min-height: 100vh;
width: 100%;
margin: auto;
border: 1px solid white;
background: rgba(255, 255, 255, 0.6);
}
.footer {
background: rgba(2, 2, 2, 0.5);
}
JS/JQUERY
window.onload = function() {
// Alternate Background Page with scrolling content (Bg Pages are odd#s)
var $bgImg = $('.bg-img');
var $nav = $('nav');
var winh = window.innerHeight;
var scrollPos = 0;
var page = 1;
var page1Bottom = winh;
var page3Top = winh;
var page3Bottom = winh * 3;
var page5Top = winh * 3;
var page5Bottom = winh * 5;
$(window).on('scroll', function() {
scrollPos = Number($(window).scrollTop().toFixed(2));
page = Math.floor(Number(scrollPos / winh) +1);
if (scrollPos >= 0 && scrollPos < page1Bottom ) {
if (! $bgImg.hasClass('bg-img1')) {
removeBg( $bgImg, 2, 3, 1 ); // element, low, high, current
$bgImg.addClass('bg-img1');
}
} else if (scrollPos >= page3Top && scrollPos <= page3Bottom) {
if (! $bgImg.hasClass('bg-img2')) {
removeBg( $bgImg, 1, 3, 2 ); // element, low, high, current
$bgImg.addClass('bg-img2');
}
} else if (scrollPos >= page5Top && scrollPos <= page5Bottom) {
if (! $bgImg.hasClass('bg-img3')) {
removeBg( $bgImg, 1, 2, 3 ); // element, low, high, current
$bgImg.addClass('bg-img3');
}
}
$nav.html("Page# " + page + " window position: " + scrollPos);
});
}
// This function was created to fix a problem where the mouse moves off the
// screen, this results in improper removal of background image class. Fix
// by removing any background class not applicable to current page.
function removeBg( el, low, high, current ) {
if (low > high || low <= 0 || high <= 0) {
console.log ("bad low/high parameters in removeBg");
}
for (var i=low; i<=high; i++) {
if ( i != current ) { // avoid removing class we are trying to add
if (el.hasClass('bg-img' +i )) {
el.removeClass('bg-img' +i );
}
}
}
} // removeBg()
Thanks @Enrico for the answer.
Note if you're using virtualenv you will have several more .pyc
files within the directory you're currently in, which will be captured by his find command.
For example:
./app.pyc
./lib/python2.7/_weakrefset.pyc
./lib/python2.7/abc.pyc
./lib/python2.7/codecs.pyc
./lib/python2.7/copy_reg.pyc
./lib/python2.7/site-packages/alembic/__init__.pyc
./lib/python2.7/site-packages/alembic/autogenerate/__init__.pyc
./lib/python2.7/site-packages/alembic/autogenerate/api.pyc
I suppose it's harmless to remove all the files, but if you only want to remove the .pyc
files in your main directory, then just do
find "*.pyc" -exec git rm -f "{}" \;
This will remove just the app.pyc
file from the git repository.
I use rake db:reset
which drops and then recreates the database and includes your seeds.rb file.
http://guides.rubyonrails.org/migrations.html#resetting-the-database
a = (b = 'string is truthy'); // b gets string; a gets b, which is a primitive (copy)
a = (b = { c: 'yes' }); // they point to the same object; a === b (not a copy)
(a && b)
is logically (a ? b : a)
and behaves like multiplication (eg. !!a * !!b
)
(a || b)
is logically (a ? a : b)
and behaves like addition (eg. !!a + !!b
)
(a = 0, b)
is short for not caring if a
is truthy, implicitly return b
a = (b = 0) && "nope, but a is 0 and b is 0"; // b is falsey + order of operations
a = (b = "b is this string") && "a gets this string"; // b is truthy + order of ops
JavaScript Operator Precedence (Order of Operations)
Note that the comma operator is actually the least privileged operator, but parenthesis are the most privileged, and they go hand-in-hand when constructing one-line expressions.
Eventually, you may need 'thunks' rather than hardcoded values, and to me, a thunk is both the function and the resultant value (the same 'thing').
const windowInnerHeight = () => 0.8 * window.innerHeight; // a thunk
windowInnerHeight(); // a thunk
You could wrap your h1
tags in another div
and then the first one would be the first-child
. That div
doesn't even need styles. It's just a way to segregate those children.
<div class="h1-holder">
<h1>Title 1</h1>
<h1>Title 2</h1>
</div>
For no particular reason, arrays cannot be assigned to one another. Use std::copy
instead:
#include <algorithm>
// ...
int a[8] = {2, 3, 5, 7, 11, 13, 17, 19};
int b[8];
std::copy(a + 0, a + 8, b);
This is more flexible than what true array assignment could provide because it is possible to copy slices of larger arrays into smaller arrays.
std::copy
is usually specialized for primitive types to give maximum performance. It is unlikely that std::memcpy
performs better. If in doubt, measure.
Although you cannot assign arrays directly, you can assign structs and classes which contain array members. That is because array members are copied memberwise by the assignment operator which is provided as a default by the compiler. If you define the assignment operator manually for your own struct or class types, you must fall back to manual copying for the array members.
Arrays cannot be passed by value. You can either pass them by pointer or by reference.
Since arrays themselves cannot be passed by value, usually a pointer to their first element is passed by value instead. This is often called "pass by pointer". Since the size of the array is not retrievable via that pointer, you have to pass a second parameter indicating the size of the array (the classic C solution) or a second pointer pointing after the last element of the array (the C++ iterator solution):
#include <numeric>
#include <cstddef>
int sum(const int* p, std::size_t n)
{
return std::accumulate(p, p + n, 0);
}
int sum(const int* p, const int* q)
{
return std::accumulate(p, q, 0);
}
As a syntactic alternative, you can also declare parameters as T p[]
, and it means the exact same thing as T* p
in the context of parameter lists only:
int sum(const int p[], std::size_t n)
{
return std::accumulate(p, p + n, 0);
}
You can think of the compiler as rewriting T p[]
to T *p
in the context of parameter lists only. This special rule is partly responsible for the whole confusion about arrays and pointers. In every other context, declaring something as an array or as a pointer makes a huge difference.
Unfortunately, you can also provide a size in an array parameter which is silently ignored by the compiler. That is, the following three signatures are exactly equivalent, as indicated by the compiler errors:
int sum(const int* p, std::size_t n)
// error: redefinition of 'int sum(const int*, size_t)'
int sum(const int p[], std::size_t n)
// error: redefinition of 'int sum(const int*, size_t)'
int sum(const int p[8], std::size_t n) // the 8 has no meaning here
Arrays can also be passed by reference:
int sum(const int (&a)[8])
{
return std::accumulate(a + 0, a + 8, 0);
}
In this case, the array size is significant. Since writing a function that only accepts arrays of exactly 8 elements is of little use, programmers usually write such functions as templates:
template <std::size_t n>
int sum(const int (&a)[n])
{
return std::accumulate(a + 0, a + n, 0);
}
Note that you can only call such a function template with an actual array of integers, not with a pointer to an integer. The size of the array is automatically inferred, and for every size n
, a different function is instantiated from the template. You can also write quite useful function templates that abstract from both the element type and from the size.
If you mean the screen where you have that interpreter prompt >>>
you can do CTRL+L on Bash shell can help. Windows does not have equivalent. You can do
import os
os.system('cls') # on windows
or
os.system('clear') # on linux / os x
void method(boolean u,int max)
{
uu=u;
maxi=max;
if (uu==true)
{
CountDownTimer uy = new CountDownTimer(maxi, 1000)
{
public void onFinish()
{
text.setText("Finish");
}
@Override
public void onTick(long l) {
String currentTimeString=DateFormat.getTimeInstance().format(new Date());
text.setText(currentTimeString);
}
}.start();
}
else{text.setText("Stop ");
}
If you want to do it typed:
class Something {
areas: Area[][];
constructor() {
this.areas = new Array<Array<Area>>();
for (let y = 0; y <= 100; y++) {
let row:Area[] = new Array<Area>();
for (let x = 0; x <=100; x++){
row.push(new Area(x, y));
}
this.areas.push(row);
}
}
}
for the example above the solution would look like this:
import PILasOPENCV as Image
import PILasOPENCV as ImageDraw
import PILasOPENCV as ImageFont
# from PIL import ImageFont, ImageDraw, Image
import numpy as np
import cv2
image = cv2.imread("lena.jpg")
# Convert to PIL Image
cv2_im_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
pil_im = Image.fromarray(cv2_im_rgb)
draw = ImageDraw.Draw(pil_im)
# Choose a font
font = ImageFont.truetype("Roboto-Regular.ttf", 40)
# Draw the text
draw.text((0, 0), "Your Text Here", font=font)
# Save the image
cv2_im_processed = pil_im.getim()
cv2.imshow("cv2_im_processed", cv2_im_processed)
cv2.waitKey()
You have a good example here (Array of Function pointers), with the syntax detailed.
int sum(int a, int b);
int subtract(int a, int b);
int mul(int a, int b);
int div(int a, int b);
int (*p[4]) (int x, int y);
int main(void)
{
int result;
int i, j, op;
p[0] = sum; /* address of sum() */
p[1] = subtract; /* address of subtract() */
p[2] = mul; /* address of mul() */
p[3] = div; /* address of div() */
[...]
To call one of those function pointers:
result = (*p[op]) (i, j); // op being the index of one of the four functions
You can just do that too, it seems to work well too.
sc create "Servicename" binPath= "Path\To\your\App.exe" DisplayName= "My Custom Service"
You can open the registry and add a string named Description in your service's registry key to add a little more descriptive information about it. It will be shown in services.msc.
$array[0] = array('key_a' => 'z', 'key_b' => 'c');
$array[1] = array('key_a' => 'x', 'key_b' => 'b');
$array[2] = array('key_a' => 'y', 'key_b' => 'a');
function build_sorter($key) {
return function ($a, $b) use ($key) {
return strnatcmp($a[$key], $b[$key]);
};
}
usort($array, build_sorter('key_b'));
Mac OS X 10.12 with Java 1.8:
$JAVA_HOME/jre/lib/security
cd $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home
From there it's in:
./jre/lib/security
I have a cacerts keystore in there.
To specify this as a VM option:
-Djavax.net.ssl.trustStore=/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/jre/lib/security/cacerts -Djavax.net.ssl.trustStorePassword=changeit
I'm not saying this is the correct way (Why doesn't java know to look within JAVA_HOME?), but this is what I had to do to get it working.
JavaScript's dates can be compared using the same comparison operators the rest of the data types use: >, <, <=, >=, ==, !=, ===, !==.
If you have two dates A and B, then A < B if A is further back into the past than B.
But it sounds like what you're having trouble with is turning a string into a date. You do that by simply passing the string as an argument for a new Date:
var someDate = new Date("12/03/2008");
or, if the string you want is the value of a form field, as it seems it might be:
var someDate = new Date(document.form1.Textbox2.value);
Should that string not be something that JavaScript recognizes as a date, you will still get a Date object, but it will be "invalid". Any comparison with another date will return false. When converted to a string it will become "Invalid Date". Its getTime() function will return NaN, and calling isNaN() on the date itself will return true; that's the easy way to check if a string is a valid date.
I suggest you to use AWS CLI. As it is very easy using command line and awscli
aws s3 cp SOURCE_DIR s3://DEST_BUCKET/ --recursive
or you can use sync by
aws s3 sync SOURCE_DIR s3://DEST_BUCKET/
Remember that you have to install aws cli and configure it by using your Access Key ID and Secrect Access Key ID
pip install --upgrade --user awscli
aws configure
>>> dic0 = {'dic0':0}
>>> dic1 = {'dic1':1}
>>> ndic = dict(dic0.items() + dic1.items())
>>> ndic
{'dic0': 0, 'dic1': 1}
>>>
I'm using UAParser https://github.com/faisalman/ua-parser-js
var a = new UAParser();
var name = a.getResult().browser.name;
var version = a.getResult().browser.version;
If you are specifically looking for getting the difference between two files, then this might help:
with open('first_file', 'r') as file1:
with open('second_file', 'r') as file2:
difference = set(file1).difference(file2)
difference.discard('\n')
with open('diff.txt', 'w') as file_out:
for line in difference:
file_out.write(line)
The Groovy script you provided is formatting the first line as a blank line in the resultant script. The shebang, telling the script to run with /bin/bash instead of /bin/sh, needs to be on the first line of the file or it will be ignored.
So instead, you should format your Groovy like this:
stage('Setting the variables values') {
steps {
sh '''#!/bin/bash
echo "hello world"
'''
}
}
And it will execute with /bin/bash.
A solution supporting all possible notations, including the scientific notation with both uppercase and lowercase exponents (e.g., 12.00e4
):
if (( $(bc -l <<< "${value1/e/E} < ${value2/e/E}") ))
then
echo "$value1 is below $value2"
fi
You mention the most commonly implemented, which is Adjacency List: https://blogs.msdn.microsoft.com/mvpawardprogram/2012/06/25/hierarchies-convert-adjacency-list-to-nested-sets
There are other models as well, including materialized path and nested sets: http://communities.bmc.com/communities/docs/DOC-9902
Joe Celko has written a book on this subject, which is a good reference from a general SQL perspective (it is mentioned in the nested set article link above).
Also, Itzik Ben-Gann has a good overview of the most common options in his book "Inside Microsoft SQL Server 2005: T-SQL Querying".
The main things to consider when choosing a model are:
1) Frequency of structure change - how frequently does the actual structure of the tree change. Some models provide better structure update characteristics. It is important to separate structure changes from other data changes however. For example, you may want to model a company's organizational chart. Some people will model this as an adjacency list, using the employee ID to link an employee to their supervisor. This is usually a sub-optimal approach. An approach that often works better is to model the org structure separate from employees themselves, and maintain the employee as an attribute of the structure. This way, when an employee leaves the company, the organizational structure itself does not need to be changes, just the association with the employee that left.
2) Is the tree write-heavy or read-heavy - some structures work very well when reading the structure, but incur additional overhead when writing to the structure.
3) What types of information do you need to obtain from the structure - some structures excel at providing certain kinds of information about the structure. Examples include finding a node and all its children, finding a node and all its parents, finding the count of child nodes meeting certain conditions, etc. You need to know what information will be needed from the structure to determine the structure that will best fit your needs.
It is simple. Use trim-redux package and write like this in componentDidMount
or other place and kill it in componentWillUnmount
.
componentDidMount() {
this.tm = setTimeout(function() {
setStore({ age: 20 });
}, 3000);
}
componentWillUnmount() {
clearTimeout(this.tm);
}
Java and Javascript are similar like Car and Carpet are similar.
String expression = "^[a-zA-Z]*$";
CharSequence inputStr = str;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputStr);
if(matcher.matches())
{
//if pattern matches
}
else
{
//if pattern does not matches
}
var context = new DatabaseEntities();
var t = new test //Make sure you have a table called test in DB
{
ID = Guid.NewGuid(),
name = "blah",
};
context.test.Add(t);
context.SaveChanges();
Should do it
I have this function for this case ..
Function GetValue(r As Range, Tag As String) As Integer
Dim c, nRet As String
Dim n, x As Integer
Dim bNum As Boolean
c = r.Value
n = InStr(c, Tag)
For x = n + 1 To Len(c)
Select Case Mid(c, x, 1)
Case ":": bNum = True
Case " ": Exit For
Case Else: If bNum Then nRet = nRet & Mid(c, x, 1)
End Select
Next
GetValue = val(nRet)
End Function
To fill cell BC .. (assumed that you check cell A1)
Worksheets("Übersicht_2013").Cells(i, "BC") = GetValue(range("A1"),"S")
You can use Object.assign()
to merge them into a new object:
const response = {_x000D_
lat: -51.3303,_x000D_
lng: 0.39440_x000D_
}_x000D_
_x000D_
const item = {_x000D_
id: 'qwenhee-9763ae-lenfya',_x000D_
address: '14-22 Elder St, London, E1 6BT, UK'_x000D_
}_x000D_
_x000D_
const newItem = Object.assign({}, item, { location: response });_x000D_
_x000D_
console.log(newItem );
_x000D_
You can also use object spread, which is a Stage 4 proposal for ECMAScript:
const response = {_x000D_
lat: -51.3303,_x000D_
lng: 0.39440_x000D_
}_x000D_
_x000D_
const item = {_x000D_
id: 'qwenhee-9763ae-lenfya',_x000D_
address: '14-22 Elder St, London, E1 6BT, UK'_x000D_
}_x000D_
_x000D_
const newItem = { ...item, location: response }; // or { ...response } if you want to clone response as well_x000D_
_x000D_
console.log(newItem );
_x000D_
filter_by
is used for simple queries on the column names using regular kwargs, like
db.users.filter_by(name='Joe')
The same can be accomplished with filter
, not using kwargs, but instead using the '==' equality operator, which has been overloaded on the db.users.name object:
db.users.filter(db.users.name=='Joe')
You can also write more powerful queries using filter
, such as expressions like:
db.users.filter(or_(db.users.name=='Ryan', db.users.country=='England'))
In my case I had wrong package imported:
import org.testng.annotations.Test;
instead of
import org.junit.Test;
Beware of your ide autocomplete.
finally I got the solution:
Only put this line
@RequestMapping(value = "/YOUR_URL_Name",method = RequestMethod.POST,produces = "application/json; charset=utf-8")
this will definitely help.
You can use something like this.
$ cat test_file.txt
54 68 69 73 20 69 73 20 74 65 78 74 20 64 61 74 61 2e 0a 4f 6e 65 20 6d 6f 72 65 20 6c 69 6e 65 20 6f 66 20 74 65 73 74 20 64 61 74 61 2e
$ for c in `cat test_file.txt`; do printf "\x$c"; done;
This is text data.
One more line of test data.
Get the names and default values of a function’s arguments. A tuple of four things is returned: (args, varargs, varkw, defaults). args is a list of the argument names (it may contain nested lists). varargs and varkw are the names of the * and ** arguments or None. defaults is a tuple of default argument values or None if there are no default arguments; if this tuple has n elements, they correspond to the last n elements listed in args.
Changed in version 2.6: Returns a named tuple ArgSpec(args, varargs, keywords, defaults).
See can-you-list-the-keyword-arguments-a-python-function-receives.
To answer the underlying question of how to use a CASE expression in the WHERE clause:
First remember that the value of a CASE expression has to have a normal data type value, not a boolean value. It has to be a varchar, or an int, or something. It's the same reason you can't say SELECT Name, 76 = Age FROM [...]
and expect to get 'Frank', FALSE
in the result set.
Additionally, all expressions in a WHERE clause need to have a boolean value. They can't have a value of a varchar or an int. You can't say WHERE Name;
or WHERE 'Frank';
. You have to use a comparison operator to make it a boolean expression, so WHERE Name = 'Frank';
That means that the CASE expression must be on one side of a boolean expression. You have to compare the CASE expression to something. It can't stand by itself!
Here:
WHERE
DateDropped = 0
AND CASE
WHEN @JobsOnHold = 1 AND DateAppr >= 0 THEN 'True'
WHEN DateAppr != 0 THEN 'True'
ELSE 'False'
END = 'True'
Notice how in the end the CASE expression on the left will turn the boolean expression into either 'True' = 'True'
or 'False' = 'True'
.
Note that there's nothing special about 'False'
and 'True'
. You can use 0
and 1
if you'd rather, too.
You can typically rewrite the CASE expression into boolean expressions we're more familiar with, and that's generally better for performance. However, sometimes is easier or more maintainable to use an existing expression than it is to convert the logic.
If you are passing functional component as props to anyother component use following:
import React from 'react';
type RenderGreetingProps = {
element: React.FunctionComponent<any>
};
function RenderGreeting(props: RenderGreetingProps) {
const {element: Element} = props;
return <span>Hello, <Element />!</span>;
}
There's always the hardware route. Purchase two USB to serial converters, and connect them via a NULL modem.
Pro tips: 1) Windows may assign new COM ports to the adapters after every device sleep or reboot. 2) The market leaders in chips for USB to serial are Prolific and FTDI. Both companies are battling knockoffs, and may be blocked in future official Windows drivers. The Linux drivers however work fine with the clones.
I also ran into this all of a sudden, after it had previously worked, and it was because I was inside a virtualenv, and wheel
wasn’t installed in the virtualenv.
But still, the memory address for each letter in this address is different.
Memory address is different but as its array of characters they are sequential. When you pass address of first element and use %s
, printf
will print all characters starting from given address until it finds '\0'
.
Example Usage:
objs.sort(sortBy('last_nom'));
Script:
/**
* @description
* Returns a function which will sort an
* array of objects by the given key.
*
* @param {String} key
* @param {Boolean} reverse
* @return {Function}
*/
const sortBy = (key, reverse) => {
// Move smaller items towards the front
// or back of the array depending on if
// we want to sort the array in reverse
// order or not.
const moveSmaller = reverse ? 1 : -1;
// Move larger items towards the front
// or back of the array depending on if
// we want to sort the array in reverse
// order or not.
const moveLarger = reverse ? -1 : 1;
/**
* @param {*} a
* @param {*} b
* @return {Number}
*/
return (a, b) => {
if (a[key] < b[key]) {
return moveSmaller;
}
if (a[key] > b[key]) {
return moveLarger;
}
return 0;
};
};
You can try this code :
int columnIndex = dataGridView.CurrentCell.ColumnIndex;
int rowIndex = dataGridView.CurrentCell.RowIndex;
I found this tool most useful.
Done
This can also happen in Intellij Ultimate, which has PyCharm integrated. The issue is as diagnosed above, you have the wrong interpreter selected.
The exact method to fix this for any given project is to go to Project Settings...Project and adjust the Project SDK. You can add a New Project SDK if you don't have Python 3 added by navigating to the python3 binary. This will fix the errors listed above. A shortcut to Project Settings is the blue checkerboard-type icon.
You can also add Python 3 as the default interpreter for Python projects. On OSX this is in File..Other Settings...Default Project Structure. There you can set the Project SDK which will now apply on each new project. It can be different on other platforms, but still similar.
x="Alpha_beta_Gamma"
is_uppercase_letter = True in map(lambda l: l.isupper(), x)
print is_uppercase_letter
>>>>True
So you can write it in 1 string
I wrote a library that extends EditText which supports natively some validation methods and is actually very flexible.
Current, as I write, natively supported (through xml attributes) validation methods are:
You can check it out here: https://github.com/vekexasia/android-form-edittext
Hope you enjoy it :)
In the page I linked you'll be able to find also an example for email validation. I'll copy the relative snippet here:
<com.andreabaccega.widget.FormEditText
style="@android:style/Widget.EditText"
whatever:test="email"
android:id="@+id/et_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hint_email"
android:inputType="textEmailAddress"
/>
There is also a test app showcasing the library possibilities.
This is a screenshot of the app validating the email field.
Total cursors open, by session:
select a.value, s.username, s.sid, s.serial#
from v$sesstat a, v$statname b, v$session s
where a.statistic# = b.statistic# and s.sid=a.sid
and b.name = 'opened cursors current';
Source: http://www.orafaq.com/node/758
As far as I know queries on v$ views are based on pseudo-tables ("x$" tables) that point directly to the relevant portions of the SGA, so you can't get more accurate than that; however this also means that it is point-in-time (i.e. dirty read).
in my case, the problem was the configuration of pydev on Eclipse
You need to get the HLS m3u8 playlist files from the video's manifest. There are ways to do this by hand, but for simplicity I'll be using the youtube-dl tool to get this information. I'll be using this live stream as an example: https://www.youtube.com/watch?v=_Gtc-GtLlTk
First, get the formats of the video:
? ~ youtube-dl --list-formats https://www.youtube.com/watch\?v\=_Gtc-GtLlTk
[youtube] _Gtc-GtLlTk: Downloading webpage
[youtube] _Gtc-GtLlTk: Downloading video info webpage
[youtube] Downloading multifeed video (_Gtc-GtLlTk, aflWCT1tYL0) - add --no-playlist to just download video _Gtc-GtLlTk
[download] Downloading playlist: Southwest Florida Eagle Cam
[youtube] playlist Southwest Florida Eagle Cam: Collected 2 video ids (downloading 2 of them)
[download] Downloading video 1 of 2
[youtube] _Gtc-GtLlTk: Downloading webpage
[youtube] _Gtc-GtLlTk: Downloading video info webpage
[youtube] _Gtc-GtLlTk: Extracting video information
[youtube] _Gtc-GtLlTk: Downloading formats manifest
[youtube] _Gtc-GtLlTk: Downloading DASH manifest
[info] Available formats for _Gtc-GtLlTk:
format code extension resolution note
140 m4a audio only DASH audio 144k , m4a_dash container, mp4a.40.2@128k (48000Hz)
160 mp4 256x144 DASH video 124k , avc1.42c00b, 30fps, video only
133 mp4 426x240 DASH video 258k , avc1.4d4015, 30fps, video only
134 mp4 640x360 DASH video 646k , avc1.4d401e, 30fps, video only
135 mp4 854x480 DASH video 1171k , avc1.4d401f, 30fps, video only
136 mp4 1280x720 DASH video 2326k , avc1.4d401f, 30fps, video only
137 mp4 1920x1080 DASH video 4347k , avc1.640028, 30fps, video only
151 mp4 72p HLS , h264, aac @ 24k
132 mp4 240p HLS , h264, aac @ 48k
92 mp4 240p HLS , h264, aac @ 48k
93 mp4 360p HLS , h264, aac @128k
94 mp4 480p HLS , h264, aac @128k
95 mp4 720p HLS , h264, aac @256k
96 mp4 1080p HLS , h264, aac @256k (best)
[download] Downloading video 2 of 2
[youtube] aflWCT1tYL0: Downloading webpage
[youtube] aflWCT1tYL0: Downloading video info webpage
[youtube] aflWCT1tYL0: Extracting video information
[youtube] aflWCT1tYL0: Downloading formats manifest
[youtube] aflWCT1tYL0: Downloading DASH manifest
[info] Available formats for aflWCT1tYL0:
format code extension resolution note
140 m4a audio only DASH audio 144k , m4a_dash container, mp4a.40.2@128k (48000Hz)
160 mp4 256x144 DASH video 124k , avc1.42c00b, 30fps, video only
133 mp4 426x240 DASH video 258k , avc1.4d4015, 30fps, video only
134 mp4 640x360 DASH video 646k , avc1.4d401e, 30fps, video only
135 mp4 854x480 DASH video 1171k , avc1.4d401f, 30fps, video only
136 mp4 1280x720 DASH video 2326k , avc1.4d401f, 30fps, video only
151 mp4 72p HLS , h264, aac @ 24k
132 mp4 240p HLS , h264, aac @ 48k
92 mp4 240p HLS , h264, aac @ 48k
93 mp4 360p HLS , h264, aac @128k
94 mp4 480p HLS , h264, aac @128k
95 mp4 720p HLS , h264, aac @256k (best)
[download] Finished downloading playlist: Southwest Florida Eagle Cam
In this case, there are two videos because the live stream contains two cameras. From here, we need to get the HLS URL for a specific stream. Use -f
to pass in the format you would like to watch, and -g
to get that stream's URL:
? ~ youtube-dl -f 95 -g https://www.youtube.com/watch\?v\=_Gtc-GtLlTk
https://manifest.googlevideo.com/api/manifest/hls_playlist/id/_Gtc-GtLlTk.2/itag/95/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/gir/yes/dg_shard/X0d0Yy1HdExsVGsuMg.95/hls_chunk_host/r1---sn-ab5l6ne6.googlevideo.com/playlist_type/LIVE/gcr/us/pmbypass/yes/mm/32/mn/sn-ab5l6ne6/ms/lv/mv/m/pl/20/dover/3/sver/3/fexp/9408495,9410706,9416126,9418581,9420452,9422596,9422780,9423059,9423661,9423662,9425349,9425959,9426661,9426720,9427325,9428422,9429306/upn/xmL7zNht848/mt/1456412649/ip/64.125.177.124/ipbits/0/expire/1456434315/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,gir,dg_shard,hls_chunk_host,playlist_type,gcr,pmbypass,mm,mn,ms,mv,pl/signature/7E48A727654105FF82E158154FCBA7569D52521B.1FA117183C664F00B7508DDB81274644F520C27F/key/dg_yt0/playlist/index.m3u8
https://manifest.googlevideo.com/api/manifest/hls_playlist/id/aflWCT1tYL0.2/itag/95/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/gir/yes/dg_shard/YWZsV0NUMXRZTDAuMg.95/hls_chunk_host/r13---sn-ab5l6n7y.googlevideo.com/pmbypass/yes/playlist_type/LIVE/gcr/us/mm/32/mn/sn-ab5l6n7y/ms/lv/mv/m/pl/20/dover/3/sver/3/upn/vdBkD9lrq8Q/fexp/9408495,9410706,9416126,9418581,9420452,9422596,9422780,9423059,9423661,9423662,9425349,9425959,9426661,9426720,9427325,9428422,9429306/mt/1456412649/ip/64.125.177.124/ipbits/0/expire/1456434316/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,gir,dg_shard,hls_chunk_host,pmbypass,playlist_type,gcr,mm,mn,ms,mv,pl/signature/4E83CD2DB23C2331CE349CE9AFE806C8293A01ED.880FD2E253FAC8FA56FAA304C78BD1D62F9D22B4/key/dg_yt0/playlist/index.m3u8
These are your HLS m3u8 playlists, one for each camera associated with the live stream.
Without youtube-dl, your flow might look like this:
Take your video id and make a GET request to the get_video_info
endpoint:
HTTP GET: https://www.youtube.com/get_video_info?&video_id=_Gtc-GtLlTk&el=info&ps=default&eurl=&gl=US&hl=en
In the response, the hlsvp
value will be the link to the m3u8 HLS playlist:
https://manifest.googlevideo.com/api/manifest/hls_variant/maudio/1/ipbits/0/key/yt6/ip/64.125.177.124/gcr/us/source/yt_live_broadcast/upn/BYS1YGuQtYI/id/_Gtc-GtLlTk.2/fexp/9416126%2C9416984%2C9417367%2C9420452%2C9422596%2C9423039%2C9423661%2C9423662%2C9423923%2C9425346%2C9427672%2C9428946%2C9429162/sparams/gcr%2Cid%2Cip%2Cipbits%2Citag%2Cmaudio%2Cplaylist_type%2Cpmbypass%2Csource%2Cexpire/sver/3/expire/1456449859/pmbypass/yes/playlist_type/LIVE/itag/0/signature/1E6874232CCAC397B601051699A03DC5A32F66D9.1CABCD9BFC87A2A886A29B86CF877077DD1AEEAA/file/index.m3u8
import datetime
datetime.datetime.now().strftime ("%Y%m%d")
20151015
For the time
from time import gmtime, strftime
showtime = strftime("%Y-%m-%d %H:%M:%S", gmtime())
print showtime
2015-10-15 07:49:18
You need to either provide a body for both the getter and setter, or neither. Since you have non-trivial logic in your setter, you need a manually-implemented getter like so:
get { return _hour; }
If you decide you don't need the logic in the setter, you could go with an automatically-implemented property like so:
public int Hour { get; set; }
Thanks guys the proxy pattern really helped.....Actually I wanted to call a global function foo.. In certain pages i need do to some checks. So I did the following.
//Saving the original func
var org_foo = window.foo;
//Assigning proxy fucnc
window.foo = function(args){
//Performing checks
if(checkCondition(args)){
//Calling original funcs
org_foo(args);
}
};
Thnx this really helped me out
When a user connects, it should send a message to the server with a username which has to be unique, like an email.
A pair of username and socket should be stored in an object like this:
var users = {
'[email protected]': [socket object],
'[email protected]': [socket object],
'[email protected]': [socket object]
}
On the client, emit an object to the server with the following data:
{
to:[the other receiver's username as a string],
from:[the person who sent the message as string],
message:[the message to be sent as string]
}
On the server, listen for messages. When a message is received, emit the data to the receiver.
users[data.to].emit('receivedMessage', data)
On the client, listen for emits from the server called 'receivedMessage', and by reading the data you can handle who it came from and the message that was sent.
IMHO, this looks better:
Chess *array = malloc(size * sizeof(Chess)); // array of pointers of size `size`
for ( int i =0; i < SOME_VALUE; ++i )
{
array[i] = (Chess) malloc(sizeof(Chess));
}
JFrame.setVisible(true);
You can either use setVisible(false)
or dispose()
method to disappear current form.
This table might be helpful for you:
Going down the first column, you will see how the log works in each level. i.e for WARN, (FATAL, ERROR and WARN) will be visible. For OFF, nothing will be visible.
Here is a more complete answer with regard to InnoDB. It is a bit of a lengthy process, but can be worth the effort.
Keep in mind that /var/lib/mysql/ibdata1
is the busiest file in the InnoDB infrastructure. It normally houses six types of information:
Pictorial Representation of ibdata1
Many people create multiple ibdata
files hoping for better disk-space management and performance, however that belief is mistaken.
OPTIMIZE TABLE
?Unfortunately, running OPTIMIZE TABLE
against an InnoDB table stored in the shared table-space file ibdata1
does two things:
ibdata1
ibdata1
grow because the contiguous data and index pages are appended to ibdata1
You can however, segregate Table Data and Table Indexes from ibdata1
and manage them independently.
OPTIMIZE TABLE
with innodb_file_per_table
?Suppose you were to add innodb_file_per_table
to /etc/my.cnf (my.ini)
. Can you then just run OPTIMIZE TABLE
on all the InnoDB Tables?
Good News : When you run OPTIMIZE TABLE
with innodb_file_per_table
enabled, this will produce a .ibd
file for that table. For example, if you have table mydb.mytable
witha datadir of /var/lib/mysql
, it will produce the following:
/var/lib/mysql/mydb/mytable.frm
/var/lib/mysql/mydb/mytable.ibd
The .ibd
will contain the Data Pages and Index Pages for that table. Great.
Bad News : All you have done is extract the Data Pages and Index Pages of mydb.mytable
from living in ibdata
. The data dictionary entry for every table, including mydb.mytable
, still remains in the data dictionary (See the Pictorial Representation of ibdata1). YOU CANNOT JUST SIMPLY DELETE ibdata1
AT THIS POINT !!! Please note that ibdata1
has not shrunk at all.
To shrink ibdata1
once and for all you must do the following:
Dump (e.g., with mysqldump
) all databases into a .sql
text file (SQLData.sql
is used below)
Drop all databases (except for mysql
and information_schema
) CAVEAT : As a precaution, please run this script to make absolutely sure you have all user grants in place:
mkdir /var/lib/mysql_grants
cp /var/lib/mysql/mysql/* /var/lib/mysql_grants/.
chown -R mysql:mysql /var/lib/mysql_grants
Login to mysql and run SET GLOBAL innodb_fast_shutdown = 0;
(This will completely flush all remaining transactional changes from ib_logfile0
and ib_logfile1
)
Shutdown MySQL
Add the following lines to /etc/my.cnf
(or my.ini
on Windows)
[mysqld]
innodb_file_per_table
innodb_flush_method=O_DIRECT
innodb_log_file_size=1G
innodb_buffer_pool_size=4G
(Sidenote: Whatever your set for innodb_buffer_pool_size
, make sure innodb_log_file_size
is 25% of innodb_buffer_pool_size
.
Also: innodb_flush_method=O_DIRECT
is not available on Windows)
Delete ibdata*
and ib_logfile*
, Optionally, you can remove all folders in /var/lib/mysql
, except /var/lib/mysql/mysql
.
Start MySQL (This will recreate ibdata1
[10MB by default] and ib_logfile0
and ib_logfile1
at 1G each).
Import SQLData.sql
Now, ibdata1
will still grow but only contain table metadata because each InnoDB table will exist outside of ibdata1
. ibdata1
will no longer contain InnoDB data and indexes for other tables.
For example, suppose you have an InnoDB table named mydb.mytable
. If you look in /var/lib/mysql/mydb
, you will see two files representing the table:
mytable.frm
(Storage Engine Header)mytable.ibd
(Table Data and Indexes)With the innodb_file_per_table
option in /etc/my.cnf
, you can run OPTIMIZE TABLE mydb.mytable
and the file /var/lib/mysql/mydb/mytable.ibd
will actually shrink.
I have done this many times in my career as a MySQL DBA. In fact, the first time I did this, I shrank a 50GB ibdata1
file down to only 500MB!
Give it a try. If you have further questions on this, just ask. Trust me; this will work in the short term as well as over the long haul.
At Step 6, if mysql cannot restart because of the mysql
schema begin dropped, look back at Step 2. You made the physical copy of the mysql
schema. You can restore it as follows:
mkdir /var/lib/mysql/mysql
cp /var/lib/mysql_grants/* /var/lib/mysql/mysql
chown -R mysql:mysql /var/lib/mysql/mysql
Go back to Step 6 and continue
With regard to setting innodb_log_file_size to 25% of innodb_buffer_pool_size in Step 5, that's blanket rule is rather old school.
Back on July 03, 2006
, Percona had a nice article why to choose a proper innodb_log_file_size. Later, on Nov 21, 2008
, Percona followed up with another article on how to calculate the proper size based on peak workload keeping one hour's worth of changes.
I have since written posts in the DBA StackExchange about calculating the log size and where I referenced those two Percona articles.
Aug 27, 2012
: Proper tuning for 30GB InnoDB table on server with 48GB RAMJan 17, 2013
: MySQL 5.5 - Innodb - innodb_log_file_size higher than 4GB combined?Personally, I would still go with the 25% rule for an initial setup. Then, as the workload can more accurate be determined over time in production, you could resize the logs during a maintenance cycle in just minutes.
str = "Tue, 10 Aug 2010 01:20:19 -0400 (EDT)"
str.to_date
=> Tue, 10 Aug 2010
You are calling DoDownloadAsync() but you don't wait it. So your program going to the next line. But there is another problem, Async methods should return Task
or Task<T>
, if you return nothing and you want your method will be run asyncronously you should define your method like this:
private static async Task DoDownloadAsync() { WebClient w = new WebClient(); string txt = await w.DownloadStringTaskAsync("http://www.google.com/"); Debug.WriteLine(txt); }
And in Main method you can't await for DoDownloadAsync
, because you can't use await keyword in non-async function, and you can't make Main
async. So consider this:
var result = DoDownloadAsync(); Debug.WriteLine("DoDownload done"); result.Wait();
Specify a 'display-image' and 'full-size-image' as described here: http://www.informit.com/articles/article.aspx?p=1829415&seqNum=16
iOS8 requires these images
Actually it is possible in JPA, although a little bit of a hack using the columnDefinition
property of the @Column
annotation, for example:
@Column(name="Price", columnDefinition="Decimal(10,2) default '100.00'")
To fix the issue:
protected void Application_PostAuthorizeRequest()
{
System.Web.HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required);
}
in Global.asax.cs
You could use position: sticky
#navbar {
position: sticky;
top: 0px;
}
The #navbar should be a direct child of the body though.
It is probably the h1
tag causing the problem. Applying margin: 0;
should fix the problem.
But you should use a CSS reset for every new project to eliminate browser consistencies and problems like yours. Probably the most famous one is Eric Meyer's: http://meyerweb.com/eric/tools/css/reset/
AStyle can be customized in great detail for C++ and Java (and others too)
This is a source code formatting tool.
clang-format is a powerful command line tool bundled with the clang compiler which handles even the most obscure language constructs in a coherent way.
It can be integrated with Visual Studio, Emacs, Vim (and others) and can format just the selected lines (or with git/svn to format some diff).
It can be configured with a variety of options listed here.
When using config files (named .clang-format
) styles can be per directory - the closest such file in parent directories shall be used for a particular file.
Styles can be inherited from a preset (say LLVM or Google) and can later override different options
It is used by Google and others and is production ready.
Also look at the project UniversalIndentGUI. You can experiment with several indenters using it: AStyle, Uncrustify, GreatCode, ... and select the best for you. Any of them can be run later from a command line.
Uncrustify has a lot of configurable options. You'll probably need Universal Indent GUI (in Konstantin's reply) as well to configure it.
I also had this problem. To sort out the problem of spaces in the middle of the string this line of code always works:
String field = field.replaceAll("\\s+", "");
G'day,
Vim's regexp processing is not too brilliant. I've found that the regexp syntax for sed is about the right match for vim's capabilities.
I usually set the search highlighting on (:set hlsearch) and then play with the regexp after entering a slash to enter search mode.
Edit: Mark, that trick to minimise greedy matching is also covered in Dale Dougherty's excellent book "Sed & Awk" (sanitised Amazon link).
Chapter Three "Understanding Regular Expression Syntax" is an excellent intro to the more primitive regexp capabilities involved with sed and awk. Only a short read and highly recommended.
HTH
cheers,
How about?
function callHttpService(url, params){
// Assume params contains key/value request params
let queryStrings = '';
for(let key in params){
queryStrings += `${key}=${params[key]}&`
}
const fullUrl = `${url}?queryStrings`
//make http request with fullUrl
}
You can also search the Visual Studio project files for the XML tag RequiredTargetFramework. This tag seems to exist on .NET 3.5 and higher.
For example: <RequiredTargetFramework>3.5</RequiredTargetFramework>
gcc
can use an assembly file as input, and invoke the assembler as needed. There is a subtlety, though:
.s
" (lowercase 's'), then gcc
calls the assembler..S
" (uppercase 'S'), then gcc
applies the C preprocessor on the source file (i.e. it recognizes directives such as #if
and replaces macros), and then calls the assembler on the result.So, on a general basis, you want to do things like this:
gcc -S file.c -o file.s
gcc -c file.s
<a href="#" class="btnTest">Test</a>
.btnTest{
background:url('images/icon.png') no-repeat left center;
padding-left:20px;
}
Although hashcode does nothing with your business logic, we have to take care of it in most cases. Because when your object is put into a hash based container(HashSet
, HashMap
...), the container puts/gets the element's hashcode.
After a lot of experimentation, I can recommend the following, which shows commits that introduce or remove lines containing a given regexp, and displays the text changes in each, with colours showing words added and removed.
git log --pickaxe-regex -p --color-words -S "<regexp to search for>"
Takes a while to run though... ;-)
I had the same question and I finally found the answer:
You need to handle BOTH the SelectionChanged event and the DropDownClosed like this:
In XAML:
<ComboBox Name="cmbSelect" SelectionChanged="ComboBox_SelectionChanged" DropDownClosed="ComboBox_DropDownClosed">
<ComboBoxItem>1</ComboBoxItem>
<ComboBoxItem>2</ComboBoxItem>
<ComboBoxItem>3</ComboBoxItem>
</ComboBox>
In C#:
private bool handle = true;
private void ComboBox_DropDownClosed(object sender, EventArgs e) {
if(handle)Handle();
handle = true;
}
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) {
ComboBox cmb = sender as ComboBox;
handle = !cmb.IsDropDownOpen;
Handle();
}
private void Handle() {
switch (cmbSelect.SelectedItem.ToString().Split(new string[] { ": " }, StringSplitOptions.None).Last())
{
case "1":
//Handle for the first combobox
break;
case "2":
//Handle for the second combobox
break;
case "3":
//Handle for the third combobox
break;
}
}
yum -y remove php*
to remove all php packages then you can install the 5.6 ones.
There is actually a way to fix that. First you delete the auto_incremented primary key column, and then you add it again, like this:
ALTER TABLE table_name DROP column_name;
ALTER TABLE table_name ADD column_name int not null auto_increment primary key first;
Indexing a list is done using double bracket, i.e. hypo_list[[1]]
(e.g. have a look here: http://www.r-tutor.com/r-introduction/list). BTW: read.table
does not return a table but a dataframe (see value section in ?read.table
). So you will have a list of dataframes, rather than a list of table objects. The principal mechanism is identical for tables and dataframes though.
Note: In R, the index for the first entry is a 1
(not 0
like in some other languages).
Dataframes
l <- list(anscombe, iris) # put dfs in list
l[[1]] # returns anscombe dataframe
anscombe[1:2, 2] # access first two rows and second column of dataset
[1] 10 8
l[[1]][1:2, 2] # the same but selecting the dataframe from the list first
[1] 10 8
Table objects
tbl1 <- table(sample(1:5, 50, rep=T))
tbl2 <- table(sample(1:5, 50, rep=T))
l <- list(tbl1, tbl2) # put tables in a list
tbl1[1:2] # access first two elements of table 1
Now with the list
l[[1]] # access first table from the list
1 2 3 4 5
9 11 12 9 9
l[[1]][1:2] # access first two elements in first table
1 2
9 11
Do not use css3 variables due to support.
I would do the following if you want a pure css solution.
Use color classes with semenatic names.
.bg-primary { background: #880000; }
.bg-secondary { background: #008800; }
.bg-accent { background: #F5F5F5; }
Separate the structure from the skin (OOCSS)
/* Instead of */
h1 {
font-size: 2rem;
line-height: 1.5rem;
color: #8000;
}
/* use this */
h1 {
font-size: 2rem;
line-height: 1.5rem;
}
.bg-primary {
background: #880000;
}
/* This will allow you to reuse colors in your design */
Put these inside a separate css file to change as needed.
You can use the sprintf
method, however the arg
method is preferred as it supports unicode.
QString str;
str.sprintf("%s %d", "string", 213);
Use:
BEGIN
PACKAGE_NAME.PROCEDURE_NAME(parameter_value, ...);
END;
Replace "PACKAGE_NAME", "PROCEDURE_NAME", and "parameter_value" with what you need. OUT parameters will need to be declared prior to.
Easy with perl! If you want to get line 1, 3 and 5 from a file, say /etc/passwd:
perl -e 'while(<>){if(++$l~~[1,3,5]){print}}' < /etc/passwd
The dat file has some lines of extra information before the actual data. Skip them with the skip
argument:
read.table("http://www.nilu.no/projects/ccc/onlinedata/ozone/CZ03_2009.dat",
header=TRUE, skip=3)
An easy way to check this if you are unfamiliar with the dataset is to first use readLines
to check a few lines, as below:
readLines("http://www.nilu.no/projects/ccc/onlinedata/ozone/CZ03_2009.dat",
n=10)
# [1] "Ozone data from CZ03 2009" "Local time: GMT + 0"
# [3] "" "Date Hour Value"
# [5] "01.01.2009 00:00 34.3" "01.01.2009 01:00 31.9"
# [7] "01.01.2009 02:00 29.9" "01.01.2009 03:00 28.5"
# [9] "01.01.2009 04:00 32.9" "01.01.2009 05:00 20.5"
Here, we can see that the actual data starts at [4]
, so we know to skip the first three lines.
If you really only wanted the Value
column, you could do that by:
as.vector(
read.table("http://www.nilu.no/projects/ccc/onlinedata/ozone/CZ03_2009.dat",
header=TRUE, skip=3)$Value)
Again, readLines
is useful for helping us figure out the actual name of the columns we will be importing.
But I don't see much advantage to doing that over reading the whole dataset in and extracting later.
Neither one of the solutions worked form me. The only one that worked for me in Spring form is:
action="./upload?${_csrf.parameterName}=${_csrf.token}"
REPLACED WITH:
action="./upload?_csrf=${_csrf.token}"
(Spring 5 with enabled csrf in java configuration)
I have made it working...
Please follow the highlighted mark in the attached image.
Just for punctuality purpose and extend a bit Tim answer.
From official documentation:
The app returned by express() is in fact a JavaScript Function, DESIGNED TO BE PASSED to Node’s HTTP servers as a callback to handle requests.
This makes it easy to provide both HTTP and HTTPS versions of your app with the same code base, as the app does not inherit from these (it is simply a callback):
http.createServer(app).listen(80);
https.createServer(options, app).listen(443);
The app.listen() method returns an http.Server object and (for HTTP) is a convenience method for the following:
app.listen = function() {
var server = http.createServer(this);
return server.listen.apply(server, arguments);
};
DirBuster is such a hacking script that guesses a bunch of common names as nsanders had mentioned. It literally brute forces lists of common words and file endings (.html, .php) and over time figures out the directory structure of such sites, this could discover the page as you described but would also discover many others.
When you assign a variable to empty curly braces {} eg: new_set = {}
, it becomes a dictionary.
To create an empty set, assign the variable to a 'set()' ie: new_set = set()
The KeyDown event only triggered at the standard TextBox or MaskedTextBox by "normal" input keys, not ENTER or TAB and so on.
One can get special keys like ENTER by overriding the IsInputKey method:
public class CustomTextBox : System.Windows.Forms.TextBox
{
protected override bool IsInputKey(Keys keyData)
{
if (keyData == Keys.Return)
return true;
return base.IsInputKey(keyData);
}
}
Then one can use the KeyDown event in the following way:
CustomTextBox ctb = new CustomTextBox();
ctb.KeyDown += new KeyEventHandler(tb_KeyDown);
private void tb_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
//Enter key is down
//Capture the text
if (sender is TextBox)
{
TextBox txb = (TextBox)sender;
MessageBox.Show(txb.Text);
}
}
}
Your going to need CURL for that task I'm afraid. Nice easy way to do it here: http://davidwalsh.name/execute-http-post-php-curl
Hope that helps
You simply want the File.GetLastWriteTime
static method.
Example:
var lastModified = System.IO.File.GetLastWriteTime("C:\foo.bar");
Console.WriteLine(lastModified.ToString("dd/MM/yy HH:mm:ss"));
Note however that in the rare case the last-modified time is not updated by the system when writing to the file (this can happen intentionally as an optimisation for high-frequency writing, e.g. logging, or as a bug), then this approach will fail, and you will instead need to subscribe to file write notifications from the system, constantly listening.
Why it is hard
Popular font formats like TrueType and OpenType are vector outline formats: they use Bezier curves to define the boundary of the letter.
Transforming those formats into arrays of pixels (rasterization) is too specific and out of OpenGL's scope, specially because OpenGl does not have non-straight primitives (e.g. see Why is there no circle or ellipse primitive in OpenGL?)
The easiest approach is to first raster fonts ourselves on the CPU, and then give the array of pixels to OpenGL as a texture.
OpenGL then knows how to deal with arrays of pixels through textures very well.
Texture atlas
We could raster characters for every frame and re-create the textures, but that is not very efficient, specially if characters have a fixed size.
The more efficient approach is to raster all characters you plan on using and cram them on a single texture.
And then transfer that to the GPU once, and use it texture with custom uv coordinates to choose the right character.
This approach is called a texture atlas and it can be used not only for textures but also other repeatedly used textures, like tiles in a 2D game or web UI icons.
The Wikipedia picture of the full texture, which is itself taken from freetype-gl, illustrates this well:
I suspect that optimizing character placement to the smallest texture problem is an NP-hard problem, see: What algorithm can be used for packing rectangles of different sizes into the smallest rectangle possible in a fairly optimal way?
The same technique is used in web development to transmit several small images (like icons) at once, but there it is called "CSS Sprites": https://css-tricks.com/css-sprites/ and are used to hide the latency of the network instead of that of the CPU / GPU communication.
Non-CPU raster methods
There also exist methods which don't use the CPU raster to textures.
CPU rastering is simple because it uses the GPU as little as possible, but we also start thinking if it would be possible to use the GPU efficiency further.
This FOSDEM 2014 video explains other existing techniques:
Fonts inside of the 3D geometry with perspective
Rendering fonts inside of the 3D geometry with perspective (compared to an orthogonal HUD) is much more complicated, because perspective could make one part of the character much closer to the screen and larger than the other, making an uniform CPU discretization (e.g. raster, tesselation) look bad on the close part. This is actually an active research topic:
Distance fields are one of the popular techniques now.
The examples that follow were all tested on Ubuntu 15.10.
Because this is a complex problem as discussed previously, most examples are large, and would blow up the 30k char limit of this answer, so just clone the respective Git repositories to compile.
They are all fully open source however, so you can just RTFS.
FreeType solutions
FreeType looks like the dominant open source font rasterization library, so it would allow us to use TrueType and OpenType fonts, making it the most elegant solution.
https://github.com/rougier/freetype-gl
Was a set of examples OpenGL and freetype, but is more or less evolving into a library that does it and exposes a decent API.
In any case, it should already be possible to integrate it on your project by copy pasting some source code.
It provides both texture atlas and distance field techniques out of the box.
Demos under: https://github.com/rougier/freetype-gl/tree/master/demos
Does not have a Debian package, and it a pain to compile on Ubuntu 15.10: https://github.com/rougier/freetype-gl/issues/82#issuecomment-216025527 (packaging issues, some upstream), but it got better as of 16.10.
Does not have a nice installation method: https://github.com/rougier/freetype-gl/issues/115
Generates beautiful outputs like this demo:
libdgx https://github.com/libgdx/libgdx/tree/1.9.2/extensions/gdx-freetype
Examples / tutorials:
Other font rasterizers
Those seem less good than FreeType, but may be more lightweight:
Anton's OpenGL 4 Tutorials example 26 "Bitmap fonts"
The font was created by the author manually and stored in a single .png
file. Letters are stored in an array form inside the image.
This method is of course not very general, and you would have difficulties with internationalization.
Build with:
make -f Makefile.linux64
Output preview:
opengl-tutorial chapter 11 "2D fonts"
Textures are generated from DDS files.
The tutorial explains how the DDS files were created, using CBFG and Paint.Net.
Output preview:
For some reason Suzanne is missing for me, but the time counter works fine: https://github.com/opengl-tutorials/ogl/issues/15
FreeGLUT
GLUT has glutStrokeCharacter
and FreeGLUT is open source...
https://github.com/dcnieho/FreeGLUT/blob/FG_3_0_0/src/fg_font.c#L255
OpenGLText
https://github.com/tlorach/OpenGLText
TrueType raster. By NVIDIA employee. Aims for reusability. Haven't tried it yet.
ARM Mali GLES SDK Sample
http://malideveloper.arm.com/resources/sample-code/simple-text-rendering/ seems to encode all characters on a PNG, and cut them from there.
SDL_ttf
Source: https://github.com/cirosantilli/cpp-cheat/blob/d36527fe4977bb9ef4b885b1ec92bd0cd3444a98/sdl/ttf.c
Lives in a separate tree to SDL, and integrates easily.
Does not provide a texture atlas implementation however, so performance will be limited: How to render fonts and text with SDL2 efficiently?
Related threads
a very clean solution working in all browsers and without any framework is to asign a new Array and simply return it without the item you want to delete:
/**
* @param {Array} array the original array with all items
* @param {any} item the time you want to remove
* @returns {Array} a new Array without the item
*/
var removeItemFromArray = function(array, item){
/* assign a empty array */
var tmp = [];
/* loop over all array items */
for(var index in array){
if(array[index] !== item){
/* push to temporary array if not like item */
tmp.push(array[index]);
}
}
/* return the temporary array */
return tmp;
}
@SolutionYogi's answer works like a charm, but it seems that using $.each is less straightforward and efficient than directly appending listitems :
var mylist = $('#list');
var listitems = mylist.children('li').get();
listitems.sort(function(a, b) {
return $(a).text().toUpperCase().localeCompare($(b).text().toUpperCase());
})
mylist.empty().append(listitems);
I only use MicrosoftAdvertising.Mobile and Microsoft.Advertising.Mobile.UI and I am served ads. The SDK should only add the DLLs not reference itself.
Note: You need to explicitly set width and height Make sure the phone dialer, and web browser capabilities are enabled
Followup note: Make sure that after you've removed the SDK DLL, that the xmlns references are not still pointing to it. The best route to take here is
Here is the xmlns reference:
xmlns:AdNamepace="clr-namespace:Microsoft.Advertising.Mobile.UI;assembly=Microsoft.Advertising.Mobile.UI"
Then the ad itself:
<AdNamespace:AdControl x:Name="myAd" Height="80" Width="480" AdUnitId="yourAdUnitIdHere" ApplicationId="yourIdHere"/>
Here's the quote on AssemblyInfo.cs from MSDN:
You can specify all the values or you can accept the default build number, revision number, or both by using an asterisk (). For example, [assembly:AssemblyVersion("2.3.25.1")] indicates 2 as the major version, 3 as the minor version, 25 as the build number, and 1 as the revision number. A version number such as [assembly:AssemblyVersion("1.2.")] specifies 1 as the major version, 2 as the minor version, and accepts the default build and revision numbers. A version number such as [assembly:AssemblyVersion("1.2.15.*")] specifies 1 as the major version, 2 as the minor version, 15 as the build number, and accepts the default revision number. The default build number increments daily. The default revision number is random
This effectively says, if you put a 1.1.* into assembly info, only build number will autoincrement, and it will happen not after every build, but daily. Revision number will change every build, but randomly, rather than in an incrementing fashion.
This is probably enough for most use cases. If that's not what you're looking for, you're stuck with having to write a script which will autoincrement version # on pre-build step
I had to have new lines in a tooltip. I had to add this CSS on my :after :
.tooltip:after {
width: 500px;
white-space: pre;
word-wrap: break-word;
}
The word-wrap seems necessary.
In addition, the \A didn't work in the middle of the text to display, to force a new line.
worked. I was then able to get such a tooltip :
In docker-compose.yml you can use this format:
volumes:
- host directory:container directory
according to their documentation
Run given below command on terminal ( for linux only )
ps aux | grep rails
and then
kill -9 [pid]
Another way
lsof -wni tcp:3000
and then
kill -9 [PID]
With the new (Android 6.0) fingerprint hardware and API you can do it as in this github sample application.
USE This Assembly Referance in your Project
Add a reference to System.Net.Http.Formatting.dll
Long story short: you set some dimensions and let NumPy set the remaining(s).
(userDim1, userDim2, ..., -1) -->>
(userDim1, userDim1, ..., TOTAL_DIMENSION - (userDim1 + userDim2 + ...))
We get the runtime for the heap build by figuring out the maximum move each node can take. So we need to know how many nodes are in each row and how far from their can each node go.
Starting from the root node each next row has double the nodes than the previous row has, so by answering how often can we double the number of nodes until we don't have any nodes left we get the height of the tree. Or in mathematical terms the height of the tree is log2(n), n being the length of the array.
To calculate the nodes in one row we start from the back, we know n/2 nodes are at the bottom, so by dividing by 2 we get the previous row and so on.
Based on this we get this formula for the Siftdown approach: (0 * n/2) + (1 * n/4) + (2 * n/8) + ... + (log2(n) * 1)
The term in the last paranthesis is the height of the tree multiplied by the one node that is at the root, the term in the first paranthesis are all the nodes in the bottom row multiplied by the length they can travel,0. Same formula in smart:
Bringing the n back in we have 2 * n, 2 can be discarded because its a constant and tada we have the worst case runtime of the Siftdown approach: n.
I posted an answer to this already when someone else asked the same question (see How to bring back "Browser mode" in IE11?).
Read my answer there for a fuller explaination, but in short:
They removed it deliberately, because compat mode is not actually really very good for testing compatibility.
If you really want to test for compatibility with any given version of IE, you need to test in a real copy of that IE version. MS provide free VMs on http://modern.ie/ for you to use for this purpose.
The only way to get compat mode in IE11 is to set the X-UA-Compatible
header. When you have this and the site defaults to compat mode, you will be able to set the mode in dev tools, but only between edge or the specified compat mode; other modes will still not be available.
First, check that you have class="fa" as well as whatever the icon's class is. So, not just
<i class="fa-pencil" title="Edit"></i>
But also
<i class="fa fa-pencil" title="Edit"></i>
Then it works as expected. This solved my issue.
The simplest make file can be
all : test
test : test.o
gcc -o test test.o
test.o : test.c
gcc -c test.c
clean :
rm test *.o
In my case, I found that a computed column had been added to the "included columns" of an index. Later, when an item in that table was updated, the merge
statement failed with that message. The merge was in a trigger, so this was hard to track down! Removing the computed column from the index fixed it.
So there 2 ways to create a dict :
my_dict = dict()
my_dict = {}
But out of these two options {}
is more efficient than dict()
plus its readable.
CHECK HERE
Have a look at File > Preferences > Keyboard Shortcuts (or Ctrl+K Ctrl+S)
Search for cursorColumnSelectDown
or cursorColumnSelectUp
which will give you the relevent keyboard shortcut. For me it is Shift+Alt+Down/Up Arrow
The problem is already in the language:
the idea to differentiate the output based on limited placeholder like '[name]' defines limitations.
I like the core functionality of webpack, but the usage requires a rewrite with abstract definitions which are based on logic and simplicity... the hardest thing in software-development... logic and simplicity.
All this could be solved by just providing a list of input/output definitions... A LIST INPUT/OUTPUT DEFINITIONS.
Although this comment doesn't help much but we can learn from our mistakes by pointing at them.
Vinod Kumar: Good workaround, its:
module.exports = {
plugins: [
new FileManagerPlugin({
events: {
onEnd: {
copy: [
{source: 'www', destination: './vinod test 1/'},
{source: 'www', destination: './vinod testing 2/'},
{source: 'www', destination: './vinod testing 3/'},
],
},
}
}),
],
};
BTW. this is my first comment on stackoverflow (after 10 years as a programmer) and stackoverflow sucks in usability, like why is there so much text everywhere ? my eyes are bleeding.
The neatest solution I've found is to create your own JsonResult that extends the original implementation and allows you to specify a HttpStatusCode:
public class JsonHttpStatusResult : JsonResult
{
private readonly HttpStatusCode _httpStatus;
public JsonHttpStatusResult(object data, HttpStatusCode httpStatus)
{
Data = data;
_httpStatus = httpStatus;
}
public override void ExecuteResult(ControllerContext context)
{
context.RequestContext.HttpContext.Response.StatusCode = (int)_httpStatus;
base.ExecuteResult(context);
}
}
You can then use this in your controller action like so:
if(thereWereErrors)
{
var errorModel = new { error = "There was an error" };
return new JsonHttpStatusResult(errorModel, HttpStatusCode.InternalServerError);
}
As per the comment by Cody, this has nothing to do with Linux, but is a hint to the compiler. What happens will depend on the architecture and compiler version.
This particular feature in Linux is somewhat mis-used in drivers. As osgx points out in semantics of hot attribute, any hot
or cold
function called with in a block can automatically hint that the condition is likely or not. For instance, dump_stack()
is marked cold
so this is redundant,
if(unlikely(err)) {
printk("Driver error found. %d\n", err);
dump_stack();
}
Future versions of gcc
may selectively inline a function based on these hints. There have also been suggestions that it is not boolean
, but a score as in most likely, etc. Generally, it should be preferred to use some alternate mechanism like cold
. There is no reason to use it in any place but hot paths. What a compiler will do on one architecture can be completely different on another.
sudo apt install adb
in your pc adb not installed.
Try this, working for me
I faced the same problem on my mac and solved it, by following the following tutorials
https://mariadb.com/resources/blog/installing-mariadb-10116-mac-os-x-homebrew
But don't forget to kill or uninstall the old version before continuing.
Commands:
brew uninstall mariadb
xcode-select --install
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" - See more at: https://mariadb.com/resources/blog/installing-mariadb-10116-mac-os-x-homebrew#sthash.XQoxRoJp.dpuf
brew doctor
brew update
brew info mariadb
brew install mariadb
mysql_install_db
mysql.server start
This solution works for Integer length size =1.
Integer input = 9;
Character.valueOf((char) input.toString().charAt(0))
if size >1 we need to use for loop and iterate through.
Create index.html
or index.php
file in root directory (in your case - /var/www/html
, as @jabaldonedo mentioned)
The RequestContext
is deprecated from Primefaces 6.2. From this version use the following:
if (componentID != null && PrimeFaces.current().isAjaxRequest()) {
PrimeFaces.current().ajax().update(componentID);
}
And to execute javascript from the backbean use this way:
PrimeFaces.current().executeScript(jsCommand);
Also, in addition to torek's answer: one thing that stands out is that you're using a lazily-evaluated macro assignment.
If you're on GNU Make, use the :=
assignment instead of =
. This assignment causes the right hand side to be expanded immediately, and stored in the left hand variable.
FILES := $(shell ...) # expand now; FILES is now the result of $(shell ...)
FILES = $(shell ...) # expand later: FILES holds the syntax $(shell ...)
If you use the =
assignment, it means that every single occurrence of $(FILES)
will be expanding the $(shell ...)
syntax and thus invoking the shell command. This will make your make job run slower, or even have some surprising consequences.
By using new version of jquery (1.8.2), I amend the current code like in this links http://jsfiddle.net/q5EXG/97/
By using the same code, I just change from jQuery to '$'
<a id="send-thoughts" href="">Click</a>
<textarea id="message"></textarea>
$('#send-thoughts').click(function()
{ var thought = $('#message').val();
alert(thought);
});
You'll find the junit launch commands in .metadata/.plugins/org.eclipse.debug.core/.launches, assuming your Eclipse works like mine does. The files are named {TestClass}.launch.
You will probably also need the .classpath file in the project directory that contains the test class.
Like the run configurations, they're XML files (even if they don't have an xml extension).
Class methods can't change or know the value of any instance variable. That should be the criteria for knowing if an instance method can be a class method.
Here i'm adding sample code for http post print response and parsing as JSON if possible, it will handle everything async so your GUI will be refreshing just fine and will not freeze at all - which is important to notice.
//POST DATA
NSString *theBody = [NSString stringWithFormat:@"parameter=%@",YOUR_VAR_HERE];
NSData *bodyData = [theBody dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
//URL CONFIG
NSString *serverURL = @"https://your-website-here.com";
NSString *downloadUrl = [NSString stringWithFormat:@"%@/your-friendly-url-here/json",serverURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString: downloadUrl]];
//POST DATA SETUP
[request setHTTPMethod:@"POST"];
[request setHTTPBody:bodyData];
//DEBUG MESSAGE
NSLog(@"Trying to call ws %@",downloadUrl);
//EXEC CALL
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(@"Download Error:%@",error.description);
}
if (data) {
//
// THIS CODE IS FOR PRINTING THE RESPONSE
//
NSString *returnString = [[NSString alloc] initWithData:data encoding: NSUTF8StringEncoding];
NSLog(@"Response:%@",returnString);
//PARSE JSON RESPONSE
NSDictionary *json_response = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];
if ( json_response ) {
if ( [json_response isKindOfClass:[NSDictionary class]] ) {
// do dictionary things
for ( NSString *key in [json_response allKeys] ) {
NSLog(@"%@: %@", key, json_response[key]);
}
}
else if ( [json_response isKindOfClass:[NSArray class]] ) {
NSLog(@"%@",json_response);
}
}
else {
NSLog(@"Error serializing JSON: %@", error);
NSLog(@"RAW RESPONSE: %@",data);
NSString *returnString2 = [[NSString alloc] initWithData:data encoding: NSUTF8StringEncoding];
NSLog(@"Response:%@",returnString2);
}
}
}];
Hope this helps!
From the jQuery.each() documentation:
.each( function(index, Element) )
function(index, Element)A function to execute for each matched element.
So you'll want to use:
$('#list option').each(function(i,e){
//do stuff
});
...where index will be the index and element will be the option element in list
There is actually a way to do this with html only. Just sets:
<img src="#" width height="50%">
Like this:
#include <string>
#include <vector>
struct user
{
std::string username;
std::vector<unsigned char> userpassword;
};
int main()
{
user r; // r.username is "" and r.userpassword is empty
// ...
}
In your example one and two are char pointers, pointing to char constants. You cannot change the char constants pointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead you should have a separate variable(char array) to hold the result. Something like this:
char result[100]; // array to hold the result.
strcpy(result,one); // copy string one into the result.
strcat(result,two); // append string two to the result.
I thought about this simple regex matching pattern for IP address matching \d+[.]\d+[.]\d+[.]\d+
Did you mean "Complex" as in complex number with real and imaginary parts? This seems unlikely, so if not you'd have to give an example since "complex" means nothing specific in terms of the C language.
You will get a direct memory copy of the structure; whether that is what you want depends on the structure. For example if the structure contains a pointer, both copies will point to the same data. This may or may not be what you want; that is down to your program design.
To perform a 'smart' copy (or a 'deep' copy), you will need to implement a function to perform the copy. This can be very difficult to achieve if the structure itself contains pointers and structures that also contain pointers, and perhaps pointers to such structures (perhaps that's what you mean by "complex"), and it is hard to maintain. The simple solution is to use C++ and implement copy constructors and assignment operators for each structure or class, then each one becomes responsible for its own copy semantics, you can use assignment syntax, and it is more easily maintained.
Depends on what SQL implementation you are using. Both MySQL and SQLite, for example, have ways to get last insert id. In fact, if you're using PHP, there's even a nifty function for exactly that mysql_insert_id().
You should probably look to use this MySQL feature instead of looking at all the rows just to get the biggest insert ID. If your table gets big, that could become very inefficient.
str.contains("!=") ^ str.startsWith("not(")
looks better for me than
str.contains("!=") != str.startsWith("not(")
This works for me on all devices [ iOS, Android and Window Mobile 8.1 ].
Does not look like the best way by any means... but cannot be more simpler :)
<a href="bingmaps:?cp=18.551464~73.951399">
<a href="http://maps.apple.com/maps?q=18.551464, 73.951399">
Open Maps
</a>
</a>
You can use:
<asp:textbox id="textBox1" style="text-align:center"></asp:textbox>
Or this:
textbox.Style["text-align"] = "center"; //right, left
In terms of speed: #1 and #4, but not by much in most instances.
You could write a benchmark to confirm, but I suspect you'll find #1 and #4 to be slightly faster because the iteration work is done in C instead of Perl, and no needless copying of the array elements occurs. ($_
is aliased to the element in #1, but #2 and #3 actually copy the scalars from the array.)
#5 might be similar.
In terms memory usage: They're all the same except for #5.
for (@a)
is special-cased to avoid flattening the array. The loop iterates over the indexes of the array.
In terms of readability: #1.
In terms of flexibility: #1/#4 and #5.
#2 does not support elements that are false. #2 and #3 are destructive.
To disable inputting password:
sudo visudo
Then add a new line like below and save then:
# The user can run installer as root without inputting password
yourusername ALL=(root) NOPASSWD: /usr/sbin/installer
Then you run installer without password:
sudo installer -pkg ...
There are a number of ways to do this, but the cleanest approach has been lost among the top answers and loads of arguments over val()
. Also some methods changed as of jQuery 1.6, so this needs an update.
For the following examples I will assume the variable $select
is a jQuery object pointing at the desired <select>
tag, e.g. via the following:
var $select = $('.selDiv .opts');
For value matching, using val()
is far simpler than using an attribute selector: https://jsfiddle.net/yz7tu49b/6/
$select.val("SEL2");
The setter version of .val()
is implemented on select
tags by setting the selected
property of a matching option
with the same value
, so works just fine on all modern browsers.
If you want to set the selected state of an option directly, you can use prop
(not attr
) with a boolean
parameter (rather than the text value selected
):
e.g. https://jsfiddle.net/yz7tu49b/
$option.prop('selected', true); // Will add selected="selected" to the tag
If you use val()
to select an <option>
, but the val is not matched (might happen depending on the source of the values), then "nothing" is selected and $select.val()
will return null
.
So, for the example shown, and for the sake of robustness, you could use something like this https://jsfiddle.net/1250Ldqn/:
var $select = $('.selDiv .opts');
$select.val("SEL2");
if ($select.val() == null) {
$select.val("DEFAULT");
}
If you want to match by exact text, you can use a filter
with function. e.g. https://jsfiddle.net/yz7tu49b/2/:
var $select = $('.selDiv .opts');
$select.children().filter(function(){
return this.text == "Selection 2";
}).prop('selected', true);
although if you may have extra whitespace you may want to add a trim to the check as in
return $.trim(this.text) == "some value to match";
If you want to match by index just index the children of the select e.g. https://jsfiddle.net/yz7tu49b/3/
var $select = $('.selDiv .opts');
var index = 2;
$select.children()[index].selected = true;
Although I tend to avoid direct DOM properties in favour of jQuery nowadays, to future-proof code, so that could also be done as https://jsfiddle.net/yz7tu49b/5/:
var $select = $('.selDiv .opts');
var index = 2;
$select.children().eq(index).prop('selected', true);
In all the above cases, the change event does not fire. This is by design so that you do not wind up with recursive change events.
To generate the change event, if required, just add a call to .change()
to the jQuery select
object. e.g. the very first simplest example becomes https://jsfiddle.net/yz7tu49b/7/
var $select = $('.selDiv .opts');
$select.val("SEL2").change();
There are also plenty of other ways to find the elements using attribute selectors, like [value="SEL2"]
, but you have to remember attribute selectors are relatively slow compared to all these other options.
ln -s . someProject
If you have someDirectory/someProjectDir and two files, file1.py and file2.py, and file1.py tries to import with this line
from someProjectDir import file2
It won't work, even if you have designated the someProjectDir as a source directory, and even if it shows in preferences, project, project structure menu as a content root. The only way it will work is by linking the project as show above (unix command, works in mac, not sure of use or syntax for Windows). There seems some mechanism where Pycharm does this automatically either in checkout from version control or adding as context root, since the soft link was created by Pycharm in a dependent project. Hence, just copying the same, although the weird replication of directory is annoying and necessity is perplexing. Also in the dependency where auto created, it doesn't show as new directory under version control. Perhaps comparison of .idea files will reveal more.
Hope this code helps for creating Thumbnail for JPG, PNG & GIF formats.
<?php
$file = "D:/server/sites/Sourcefol/high/bucket/kath23.png"; /*Your Original Source Image */
$pathToSave = "D:/server/sites/Sourcefol/high/bucket/New/"; /*Your Destination Folder */
$sourceWidth =60;
$sourceHeight = 60;
$what = getimagesize($file);
$file_name = basename($file);/* Name of the Image File*/
$ext = pathinfo($file_name, PATHINFO_EXTENSION);
/* Adding image name _thumb for thumbnail image */
$file_name = basename($file_name, ".$ext") . '_thumb.' . $ext;
switch(strtolower($what['mime']))
{
case 'image/png':
$img = imagecreatefrompng($file);
$new = imagecreatetruecolor($what[0],$what[1]);
imagecopy($new,$img,0,0,0,0,$what[0],$what[1]);
header('Content-Type: image/png');
break;
case 'image/jpeg':
$img = imagecreatefromjpeg($file);
$new = imagecreatetruecolor($what[0],$what[1]);
imagecopy($new,$img,0,0,0,0,$what[0],$what[1]);
header('Content-Type: image/jpeg');
break;
case 'image/gif':
$img = imagecreatefromgif($file);
$new = imagecreatetruecolor($what[0],$what[1]);
imagecopy($new,$img,0,0,0,0,$what[0],$what[1]);
header('Content-Type: image/gif');
break;
default: die();
}
imagejpeg($new,$pathToSave.$file_name);
imagedestroy($new);
?>
To permanently set the language syntax:
open settings.json
file
*) format all txt files with javascript formatting
"files.associations": {
"*.txt": "javascript"
}
*) format all unsaved files (untitled-1 etc) to javascript:
"files.associations": {
"untitled-*": "javascript"
}
In windows 7, you may have to edit this file
C:\Users\<UserName>\AppData\Roaming\Subversion\servers
[global]
http-proxy-host = ip.add.re.ss
http-proxy-port = 3128
Briefly, no.
You can import all of the functions in the script into your environment with source
(help source
for details), which will then allow you to call them. This also has the effect of executing the script, so take care.
There is no way to call a function from a shell script as if it were a shared library.
As long as there are no identity columns you can just
INSERT INTO TableNew
SELECT * FROM TableOld
WHERE [Conditions]
The most efficient way I have found to get to the javascript debugger is by running this:
chrome://inspect
If you have the input stream (see Joe's answer) also consider ioutils.toString( inputstream ).
http://commons.apache.org/io/api-1.4/org/apache/commons/io/IOUtils.html#toString(java.io.InputStream)
How about accepting complex roots as solutions?
import math
# User inserting the values of a, b and c
a = float(input("Insert coefficient a: "))
b = float(input("Insert coefficient b: "))
c = float(input("Insert coefficient c: "))
discriminant = b**2 - 4 * a * c
if discriminant >= 0:
x_1=(-b+math.sqrt(discriminant))/2*a
x_2=(-b-math.sqrt(discriminant))/2*a
else:
x_1= complex((-b/(2*a)),math.sqrt(-discriminant)/(2*a))
x_2= complex((-b/(2*a)),-math.sqrt(-discriminant)/(2*a))
if discriminant > 0:
print("The function has two distinct real roots: ", x_1, " and ", x_2)
elif discriminant == 0:
print("The function has one double root: ", x_1)
else:
print("The function has two complex (conjugate) roots: ", x_1, " and ", x_2)
If you are not sure, Given path is directory or file then you can use this function to delete path
function deletePath($path) {
if(is_file($path)){
unlink($path);
} elseif(is_dir($path)){
$path = (substr($path, -1) !== DIRECTORY_SEPARATOR) ? $path . DIRECTORY_SEPARATOR : $path;
$files = glob($path . '*');
foreach ($files as $file) {
deleteDirPath($file);
}
rmdir($path);
} else {
return false;
}
}
I believe sideshowbarker 's answer here has all the info you need to fix this. If your problem is just No 'Access-Control-Allow-Origin' header is present on the response you're getting, you can set up a CORS proxy to get around this. Way more info on it in the linked answer
I believe Twitter Bootstrap has a class called clearfix
that you can use to clear the floating.
<ul class="nav nav-tabs span2 clearfix">
I found a pretty simple way to handle "one copy of script per system". It doesn't allow me to run multiple copies of the script from many accounts though (on standard Linux that is).
Solution:
At the beginning of script, I gave:
pidof -s -o '%PPID' -x $( basename $0 ) > /dev/null 2>&1 && exit
Apparently pidof works great in a way that:
ps -C ...
grep -v grep
( or anything similar )And it doesn't rely on lockfiles, which for me is a big win, because relaying on them means you have to add handling of stale lockfiles - which is not really complicated, but if it can be avoided - why not?
As for checking with "one copy of script per running user", i wrote this, but I'm not overly happy with it:
(
pidof -s -o '%PPID' -x $( basename $0 ) | tr ' ' '\n'
ps xo pid= | tr -cd '[0-9\n]'
) | sort | uniq -d
and then I check its output - if it's empty - there are no copies of the script from same user.
16 bit installer will not work on windows 7 it's no longer supported by win 7 the most recent supported version of windows that can run 16 bit installer is vista 32-bit even vista 64-bit doesn't support 16-bit installer.... reference http://support.microsoft.com/kb/946765
<p style="text-indent: 5em;">
The first line of this paragraph will be indented about five characters, similar to a tabbed indent.
</p>
The first line of this paragraph will be indented about five characters, similar to a tabbed indent.
See How to Use HTML and CSS to Create Tabs and Spacing for more information.
The middle one writes to the pipeline. Write-Host
and Out-Host
writes to the console. 'echo' is an alias for Write-Output
which writes to the pipeline as well. The best way to write to the console would be using the Write-Host
cmdlet.
When an object is written to the pipeline it can be consumed by other commands in the chain. For example:
"hello world" | Do-Something
but this won't work since Write-Host
writes to the console, not to the pipeline (Do-Something will not get the string):
Write-Host "hello world" | Do-Something
You can add all pages with this code:
JS code:
/* Top btn */
$(window).scroll(function() {
if ($(this).scrollTop()) {
$('#toTop').fadeIn();
} else {
$('#toTop').fadeOut();
}
});
var top_btn_html="<topbtn id='toTop' onclick='gotoTop()'>↑</topbtn>";
$('document').ready(function(){
$("body").append(top_btn_html);
});
function gotoTop(){
$("html, body").animate({scrollTop: 0}, 500);
}
/* Top btn */
CSS CODE
/*Scrool top btn*/
#toTop{
position: fixed;
z-index: 10000;
opacity: 0.5;
right: 5px;
bottom: 10px;
background-color: #ccc;
border: 1px solid black;
width: 40px;
height: 40px;
border-radius: 20px;
color: black;
font-size: 22px;
font-weight: bolder;
text-align: center;
vertical-align: middle;
}
Your code rounds to three decimal places due to the ".3" before the f
printf("%1.3f", 359.01335);
printf("%1.3f", 359.00999);
Thus if you the second line rounded to two decimal places, you should change it to this:
printf("%1.3f", 359.01335);
printf("%1.2f", 359.00999);
That code will output your desired results:
359.013
359.01
*Note this is assuming you already have it printing on separate lines, if not then the following will prevent it from printing on the same line:
printf("%1.3f\n", 359.01335);
printf("%1.2f\n", 359.00999);
The Following program source code was my test for this answer
#include <cstdio>
int main()
{
printf("%1.3f\n", 359.01335);
printf("%1.2f\n", 359.00999);
while (true){}
return 0;
}
In addition to the answers above, for those who want to process CSV and then export to csv, parquet or SQL, d6tstack is another good option. You can load multiple files and it deals with data schema changes (added/removed columns). Chunked out of core support is already built in.
def apply(dfg):
# do stuff
return dfg
c = d6tstack.combine_csv.CombinerCSV([bigfile.csv], apply_after_read=apply, sep=',', chunksize=1e6)
# or
c = d6tstack.combine_csv.CombinerCSV(glob.glob('*.csv'), apply_after_read=apply, chunksize=1e6)
# output to various formats, automatically chunked to reduce memory consumption
c.to_csv_combine(filename='out.csv')
c.to_parquet_combine(filename='out.pq')
c.to_psql_combine('postgresql+psycopg2://usr:pwd@localhost/db', 'tablename') # fast for postgres
c.to_mysql_combine('mysql+mysqlconnector://usr:pwd@localhost/db', 'tablename') # fast for mysql
c.to_sql_combine('postgresql+psycopg2://usr:pwd@localhost/db', 'tablename') # slow but flexible
Yesterday I made this class. Take it, it's for all API Levels
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import android.annotation.SuppressLint;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.net.Uri;
import android.util.Log;
import de.lochmann.nsafirewall.R;
public class MyClipboardManager {
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
public boolean copyToClipboard(Context context, String text) {
try {
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context
.getSystemService(context.CLIPBOARD_SERVICE);
clipboard.setText(text);
} else {
android.content.ClipboardManager clipboard = (android.content.ClipboardManager) context
.getSystemService(context.CLIPBOARD_SERVICE);
android.content.ClipData clip = android.content.ClipData
.newPlainText(
context.getResources().getString(
R.string.message), text);
clipboard.setPrimaryClip(clip);
}
return true;
} catch (Exception e) {
return false;
}
}
@SuppressLint("NewApi")
public String readFromClipboard(Context context) {
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context
.getSystemService(context.CLIPBOARD_SERVICE);
return clipboard.getText().toString();
} else {
ClipboardManager clipboard = (ClipboardManager) context
.getSystemService(Context.CLIPBOARD_SERVICE);
// Gets a content resolver instance
ContentResolver cr = context.getContentResolver();
// Gets the clipboard data from the clipboard
ClipData clip = clipboard.getPrimaryClip();
if (clip != null) {
String text = null;
String title = null;
// Gets the first item from the clipboard data
ClipData.Item item = clip.getItemAt(0);
// Tries to get the item's contents as a URI pointing to a note
Uri uri = item.getUri();
// If the contents of the clipboard wasn't a reference to a
// note, then
// this converts whatever it is to text.
if (text == null) {
text = coerceToText(context, item).toString();
}
return text;
}
}
return "";
}
@SuppressLint("NewApi")
public CharSequence coerceToText(Context context, ClipData.Item item) {
// If this Item has an explicit textual value, simply return that.
CharSequence text = item.getText();
if (text != null) {
return text;
}
// If this Item has a URI value, try using that.
Uri uri = item.getUri();
if (uri != null) {
// First see if the URI can be opened as a plain text stream
// (of any sub-type). If so, this is the best textual
// representation for it.
FileInputStream stream = null;
try {
// Ask for a stream of the desired type.
AssetFileDescriptor descr = context.getContentResolver()
.openTypedAssetFileDescriptor(uri, "text/*", null);
stream = descr.createInputStream();
InputStreamReader reader = new InputStreamReader(stream,
"UTF-8");
// Got it... copy the stream into a local string and return it.
StringBuilder builder = new StringBuilder(128);
char[] buffer = new char[8192];
int len;
while ((len = reader.read(buffer)) > 0) {
builder.append(buffer, 0, len);
}
return builder.toString();
} catch (FileNotFoundException e) {
// Unable to open content URI as text... not really an
// error, just something to ignore.
} catch (IOException e) {
// Something bad has happened.
Log.w("ClippedData", "Failure loading text", e);
return e.toString();
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
// If we couldn't open the URI as a stream, then the URI itself
// probably serves fairly well as a textual representation.
return uri.toString();
}
// Finally, if all we have is an Intent, then we can just turn that
// into text. Not the most user-friendly thing, but it's something.
Intent intent = item.getIntent();
if (intent != null) {
return intent.toUri(Intent.URI_INTENT_SCHEME);
}
// Shouldn't get here, but just in case...
return "";
}
}
Vlookup
is good if the reference values (column A, sheet 1) are in ascending order. Another option is Index and Match, which can be used no matter the order (As long as the values in column a, sheet 1 are unique)
This is what you would put in column B on sheet 2
=INDEX(Sheet1!A$1:B$6,MATCH(A1,Sheet1!A$1:A$6),2)
Setting Sheet1!A$1:B$6
and Sheet1!A$1:A$6
as named ranges makes it a little more user friendly.
use this JavaScript code:
<script>
setTimeout(function(){
window.location.href = 'form2.html';
}, 5000);
</script>
React Native Dimensions is only a partial answer to this question, I came here looking for the actual pixel size of the screen, and the Dimensions actually gives you density independent layout size.
You can use React Native Pixel Ratio to get the actual pixel size of the screen.
You need the import statement for both Dimenions and PixelRatio
import { Dimensions, PixelRatio } from 'react-native';
You can use object destructuring to create width and height globals or put it in stylesheets as others suggest, but beware this won't update on device reorientation.
const { width, height } = Dimensions.get('window');
From React Native Dimension Docs:
Note: Although dimensions are available immediately, they may change (e.g due to >device rotation) so any rendering logic or styles that depend on these constants >should try to call this function on every render, rather than caching the value >(for example, using inline styles rather than setting a value in a StyleSheet).
PixelRatio Docs link for those who are curious, but not much more there.
To actually get the screen size use:
PixelRatio.getPixelSizeForLayoutSize(width);
or if you don't want width and height to be globals you can use it anywhere like this
PixelRatio.getPixelSizeForLayoutSize(Dimensions.get('window').width);
To change the panel's background color, use the following code:
myplot + theme(panel.background = element_rect(fill = 'green', colour = 'red'))
To change the color of the plot (but not the color of the panel), you can do:
myplot + theme(plot.background = element_rect(fill = 'green', colour = 'red'))
See here for more theme details Quick reference sheet for legends, axes and themes.
I have stopped using ORMs.
The reason is not any great flaw in the concept. Hibernate works well. Instead, I have found that queries have low overhead and I can fit lots of complex logic into large SQL queries, and shift a lot of my processing into the database.
So consider just using the JDBC package.
Other than that open the "View" menu at the top of the screen and un-check "Print Layout." Page breaks will now only be shown as a dashed line.
Either:
Foo[] array = list.toArray(new Foo[0]);
or:
Foo[] array = new Foo[list.size()];
list.toArray(array); // fill the array
Note that this works only for arrays of reference types. For arrays of primitive types, use the traditional way:
List<Integer> list = ...;
int[] array = new int[list.size()];
for(int i = 0; i < list.size(); i++) array[i] = list.get(i);
It is recommended now to use list.toArray(new Foo[0]);
, not list.toArray(new Foo[list.size()]);
.
From JetBrains Intellij Idea inspection:
There are two styles to convert a collection to an array: either using a pre-sized array (like c.toArray(new String[c.size()])) or using an empty array (like c.toArray(new String[0]).
In older Java versions using pre-sized array was recommended, as the reflection call which is necessary to create an array of proper size was quite slow. However since late updates of OpenJDK 6 this call was intrinsified, making the performance of the empty array version the same and sometimes even better, compared to the pre-sized version. Also passing pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the size and toArray call which may result in extra nulls at the end of the array, if the collection was concurrently shrunk during the operation.
This inspection allows to follow the uniform style: either using an empty array (which is recommended in modern Java) or using a pre-sized array (which might be faster in older Java versions or non-HotSpot based JVMs).
Like so:
filtered_list = [i for (i, v) in zip(list_a, filter) if v]
Using zip
is the pythonic way to iterate over multiple sequences in parallel, without needing any indexing. This assumes both sequences have the same length (zip stops after the shortest runs out). Using itertools
for such a simple case is a bit overkill ...
One thing you do in your example you should really stop doing is comparing things to True, this is usually not necessary. Instead of if filter[idx]==True: ...
, you can simply write if filter[idx]: ...
.
4294967295 is the answer, because int(11) shows maximum of 11 digits IMO
According to PostgreSQL documentation (4.1.2.1. String Constants):
To include a single-quote character within a string constant, write two
adjacent single quotes, e.g. 'Dianne''s horse'.
See also the standard_conforming_strings parameter, which controls whether escaping with backslashes works.
If you are in home page ("/Home/Index") and you would like to call Index action of Admin controller, following would work for you.
<li><a href="/Admin/Index">Admin</a></li>
The "X" button registers as DialogResult.Cancel
so another option is to evaluate the DialogResult
.
If you have multiple buttons on your form, you're probably already associating different DialogResult
s to each and this will provide you with the means to tell the difference between each button.
(Example: btnSubmit.DialogResult = DialogResult.OK
, btnClose.DialogResult = Dialogresult.Abort
)
public Form1()
{
InitializeComponent();
this.FormClosing += Form1_FormClosing;
}
/// <summary>
/// Override the Close Form event
/// Do something
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_FormClosing(Object sender, FormClosingEventArgs e)
{
//In case windows is trying to shut down, don't hold the process up
if (e.CloseReason == CloseReason.WindowsShutDown) return;
if (this.DialogResult == DialogResult.Cancel)
{
// Assume that X has been clicked and act accordingly.
// Confirm user wants to close
switch (MessageBox.Show(this, "Are you sure?", "Do you still want ... ?", MessageBoxButtons.YesNo, MessageBoxIcon.Question))
{
//Stay on this form
case DialogResult.No:
e.Cancel = true;
break;
default:
break;
}
}
}
I had the same issue and the following has fixed it (using node 12.13.1):
more info: https://nodejs.org/api/esm.html
>>> text=u'abcd'
>>> str(text)
'abcd'
If the string only contains ascii characters.
Have a look at this article: Tracing python memory leaks
Also, note that the garbage collection module actually can have debug flags set. Look at the set_debug
function. Additionally, look at this code by Gnibbler for determining the types of objects that have been created after a call.
If you are using this path to access parts of the projects which are not code (for example an upload directory, or a SQLite database) then it might be better to turn the path into a parameter, like this:
parameters:
database_path: '%kernel.root_dir%/../var/sqlite3.db'
This parameter can be injected everywhere you need it, so you don't have to mess around with paths in your code any more. Also, the parameter can be overridden at deployment time. Finally, every maintaining programmer will have a better idea what you are using it for.
Update: Fixed kernel.root_dir constant usage.
Simple and easy way to get File name
File file = new File("/storage/sdcard0/DCIM/Camera/1414240995236.jpg");
String strFileName = file.getName();
After add this code and print strFileName you will get strFileName = 1414240995236.jpg
I felt the Task.Delay()
task and CancellationTokenSource
in the other answers a bit much for my use case in a tight-ish networking loop.
And although Joe Hoag's Crafting a Task.TimeoutAfter Method on MSDN blogs was inspiring, I was a little weary of using TimeoutException
for flow control for the same reason as above, because timeouts are expected more frequently than not.
So I went with this, which also handles the optimizations mentioned in the blog:
public static async Task<bool> BeforeTimeout(this Task task, int millisecondsTimeout)
{
if (task.IsCompleted) return true;
if (millisecondsTimeout == 0) return false;
if (millisecondsTimeout == Timeout.Infinite)
{
await Task.WhenAll(task);
return true;
}
var tcs = new TaskCompletionSource<object>();
using (var timer = new Timer(state => ((TaskCompletionSource<object>)state).TrySetCanceled(), tcs,
millisecondsTimeout, Timeout.Infinite))
{
return await Task.WhenAny(task, tcs.Task) == task;
}
}
An example use case is as such:
var receivingTask = conn.ReceiveAsync(ct);
while (!await receivingTask.BeforeTimeout(keepAliveMilliseconds))
{
// Send keep-alive
}
// Read and do something with data
var data = await receivingTask;
Sending data from formfields back to the server (php) is usualy done by the POST method which can be found back in the superglobal array $_POST inside PHP. There is no need to transform it to JSON before you send it to the server. Little example:
<?php
if($_SERVER['REQUEST_METHOD'] == 'POST')
{
echo '<pre>';
print_r($_POST);
}
?>
<form action="" method="post">
<input type="text" name="email" value="[email protected]" />
<button type="submit">Send!</button>
With AJAX you are able to do exactly the same thing, only without page refresh.
Use Runtime to call Curl. This code works for both Ubuntu and Windows.
String[] commands = new String {"curl", "-X", "GET", "http://checkip.amazonaws.com"};
Process process = Runtime.getRuntime().exec(commands);
BufferedReader reader = new BufferedReader(new
InputStreamReader(process.getInputStream()));
String line;
String response;
while ((line = reader.readLine()) != null) {
response.append(line);
}
Normally, mutt sets the From:
header based on the from
configuration variable you set in ~/.muttrc
:
set from="Fubar <foo@bar>"
If this is not set, mutt
uses the EMAIL
environment variable by default. In which case, you can get away with calling mutt like this on the command line (as opposed to how you showed it in your comment):
EMAIL="foo@bar" mutt -s '$MailSubject' -c "abc@def"
However, if you want to be able to edit the From:
header while composing, you need to configure mutt
to allow you to edit headers first. This involves adding the following line in your ~/.muttrc
:
set edit_headers=yes
After that, next time you open up mutt and are composing an E-mail, your chosen text editor will pop up containing the headers as well, so you can edit them. This includes the From:
header.
Another solution is to use output buffering, you can collect everything that is being outputted/echoed and store it in a variable.
<?php
ob_start();
?>line1
line2
line3<?php
$xml = ob_get_clean();
Please note that output buffering might not be the best solution in terms of performance and code cleanliness for this exact case but worth leaving it here for reference.
The question is clear but the title is not as precise as it could be. My answer is for those who came looking to change the axis label, as opposed to the tick labels, which is what the accepted answer is about. (The title has now been corrected).
for ax in plt.gcf().axes:
plt.sca(ax)
plt.xlabel(ax.get_xlabel(), rotation=90)
As the other answers stated, dependency injection is a way to create your dependencies outside of the class that uses it. You inject them from the outside, and take control about their creation away from the inside of your class. This is also why dependency injection is a realization of the Inversion of control (IoC) principle.
IoC is the principle, where DI is the pattern. The reason that you might "need more than one logger" is never actually met, as far as my experience goes, but the actualy reason is, that you really need it, whenever you test something. An example:
My Feature:
When I look at an offer, I want to mark that I looked at it automatically, so that I don't forget to do so.
You might test this like this:
[Test]
public void ShouldUpdateTimeStamp
{
// Arrange
var formdata = { . . . }
// System under Test
var weasel = new OfferWeasel();
// Act
var offer = weasel.Create(formdata)
// Assert
offer.LastUpdated.Should().Be(new DateTime(2013,01,13,13,01,0,0));
}
So somewhere in the OfferWeasel
, it builds you an offer Object like this:
public class OfferWeasel
{
public Offer Create(Formdata formdata)
{
var offer = new Offer();
offer.LastUpdated = DateTime.Now;
return offer;
}
}
The problem here is, that this test will most likely always fail, since the date that is being set will differ from the date being asserted, even if you just put DateTime.Now
in the test code it might be off by a couple of milliseconds and will therefore always fail. A better solution now would be to create an interface for this, that allows you to control what time will be set:
public interface IGotTheTime
{
DateTime Now {get;}
}
public class CannedTime : IGotTheTime
{
public DateTime Now {get; set;}
}
public class ActualTime : IGotTheTime
{
public DateTime Now {get { return DateTime.Now; }}
}
public class OfferWeasel
{
private readonly IGotTheTime _time;
public OfferWeasel(IGotTheTime time)
{
_time = time;
}
public Offer Create(Formdata formdata)
{
var offer = new Offer();
offer.LastUpdated = _time.Now;
return offer;
}
}
The Interface is the abstraction. One is the REAL thing, and the other one allows you to fake some time where it is needed. The test can then be changed like this:
[Test]
public void ShouldUpdateTimeStamp
{
// Arrange
var date = new DateTime(2013, 01, 13, 13, 01, 0, 0);
var formdata = { . . . }
var time = new CannedTime { Now = date };
// System under test
var weasel= new OfferWeasel(time);
// Act
var offer = weasel.Create(formdata)
// Assert
offer.LastUpdated.Should().Be(date);
}
Like this, you applied the "inversion of control" principle, by injecting a dependency (getting the current time). The main reason to do this is for easier isolated unit testing, there are other ways of doing it. For example, an interface and a class here is unnecessary since in C# functions can be passed around as variables, so instead of an interface you could use a Func<DateTime>
to achieve the same. Or, if you take a dynamic approach, you just pass any object that has the equivalent method (duck typing), and you don't need an interface at all.
You will hardly ever need more than one logger. Nonetheless, dependency injection is essential for statically typed code such as Java or C#.
And... It should also be noted that an object can only properly fulfill its purpose at runtime, if all its dependencies are available, so there is not much use in setting up property injection. In my opinion, all dependencies should be satisfied when the constructor is being called, so constructor-injection is the thing to go with.
I hope that helped.
I'm surprised nobody mentioned partition
.
def substring_after(s, delim):
return s.partition(delim)[2]
IMHO, this solution is more readable than @arshajii's. Other than that, I think @arshajii's is the best for being the fastest -- it does not create any unnecessary copies/substrings.
First, the right place to mess with rendering are directives. My advice would be to wrap DOM manipulating jQuery plugins by directives like this one.
I had the same problem and came up with this snippet. It uses $watch
and $evalAsync
to ensure your code runs after directives like ng-repeat
have been resolved and templates like {{ value }}
got rendered.
app.directive('name', function() {
return {
link: function($scope, element, attrs) {
// Trigger when number of children changes,
// including by directives like ng-repeat
var watch = $scope.$watch(function() {
return element.children().length;
}, function() {
// Wait for templates to render
$scope.$evalAsync(function() {
// Finally, directives are evaluated
// and templates are renderer here
var children = element.children();
console.log(children);
});
});
},
};
});
Hope this can help you prevent some struggle.
You can use the str_replace
when you declare your variable $b like that :
$b = str_replace(" ", "", '88 8888');
echo (int)$b;
Or the most beautiful solution is to use intval :
$b = intval(str_replace(" ", "", '88 8888');
echo $b;
If your value '88 888' is from an other variable, just replace the '88 888' by the variable who contains your String.
As @Quartz mentioned, you can do something like
stage('Tests') {
parallel(
'Unit Tests': {
container('node') {
sh("npm test --cat=unit")
}
},
'API Tests': {
container('node') {
sh("npm test --cat=acceptance")
}
}
)
}
In previous replies are drawbacks. Offers its own version with the selection in the drop down list the desired item:
private ConnectSqlForm()
{
InitializeComponent();
cmbDatabases.TextChanged += UpdateAutoCompleteComboBox;
cmbDatabases.KeyDown += AutoCompleteComboBoxKeyPress;
}
private void UpdateAutoCompleteComboBox(object sender, EventArgs e)
{
var comboBox = sender as ComboBox;
if(comboBox == null)
return;
string txt = comboBox.Text;
string foundItem = String.Empty;
foreach(string item in comboBox.Items)
if (!String.IsNullOrEmpty(txt) && item.ToLower().StartsWith(txt.ToLower()))
{
foundItem = item;
break;
}
if (!String.IsNullOrEmpty(foundItem))
{
if (String.IsNullOrEmpty(txt) || !txt.Equals(foundItem))
{
comboBox.TextChanged -= UpdateAutoCompleteComboBox;
comboBox.Text = foundItem;
comboBox.DroppedDown = true;
Cursor.Current = Cursors.Default;
comboBox.TextChanged += UpdateAutoCompleteComboBox;
}
comboBox.SelectionStart = txt.Length;
comboBox.SelectionLength = foundItem.Length - txt.Length;
}
else
comboBox.DroppedDown = false;
}
private void AutoCompleteComboBoxKeyPress(object sender, KeyEventArgs e)
{
var comboBox = sender as ComboBox;
if (comboBox != null && comboBox.DroppedDown)
{
switch (e.KeyCode)
{
case Keys.Back:
int sStart = comboBox.SelectionStart;
if (sStart > 0)
{
sStart--;
comboBox.Text = sStart == 0 ? "" : comboBox.Text.Substring(0, sStart);
}
e.SuppressKeyPress = true;
break;
}
}
}
My two cents:
bool endsWith(std::string str, std::string suffix)
{
return str.find(suffix, str.size() - suffix.size()) != string::npos;
}
If you're on the Model Overview page you get a tab with the schema. If you rightclick on that tab you get an option to "edit schema". From there you can rename the schema by adding a new name, then click outside the field. This goes for MySQL Workbench 5.2.30 CE
Edit: On the model overview it's under Physical Schemata
Screenshot:
Figuring out dependencies for small projects is not hard. But once you start dealing with a dependency tree with hundreds of dependencies, things can easily get out of hand. (I'm speaking from experience here ...)
The other point is that if you use an IDE with incremental compilation and Maven support (like Eclipse + m2eclipse), then you should be able to set up edit/compile/hot deploy and test.
I personally don't do this because I've come to distrust this mode of development due to bad experiences in the past (pre Maven). Perhaps someone can comment on whether this actually works with Eclipse + m2eclipse.
Oh, I hate % design for this too....
You may convert dividend to unsigned in a way like:
unsigned int offset = (-INT_MIN) - (-INT_MIN)%divider
result = (offset + dividend) % divider
where offset is closest to (-INT_MIN) multiple of module, so adding and subtracting it will not change modulo. Note that it have unsigned type and result will be integer. Unfortunately it cannot correctly convert values INT_MIN...(-offset-1) as they cause arifmetic overflow. But this method have advandage of only single additional arithmetic per operation (and no conditionals) when working with constant divider, so it is usable in DSP-like applications.
There's special case, where divider is 2N (integer power of two), for which modulo can be calculated using simple arithmetic and bitwise logic as
dividend&(divider-1)
for example
x mod 2 = x & 1
x mod 4 = x & 3
x mod 8 = x & 7
x mod 16 = x & 15
More common and less tricky way is to get modulo using this function (works only with positive divider):
int mod(int x, int y) {
int r = x%y;
return r<0?r+y:r;
}
This just correct result if it is negative.
Also you may trick:
(p%q + q)%q
It is very short but use two %-s which are commonly slow.
You can also do it using netrw
The explore command opens up netrw in the directory of the open file
:E
Move the cursor over the file you want to rename:
R
Type in the new name, press enter, press y.
Free read-only viewers:
tail
." It's really a log file analyzer, not a large file viewer, and in one test it required 10 seconds and 700 MB of RAM to load a 250 MB file. But its killer features are the columnizer (parse logs that are in CSV, JSONL, etc. and display in a spreadsheet format) and the highlighter (show lines with certain words in certain colors). Also supports file following, tabs, multifiles, bookmarks, search, plugins, and external tools.Free editors:
Builtin programs (no installation required):
MORE
, not the Unix more
. A console program that allows you to view a file, one screen at a time.Web viewers:
Paid editors:
Update : link for TWBS 3 getbootstrap.com/customize/#grid-system
Twitter Bootstrap offers a customize form to download all or some components with custom configuration.
You can use this form to download a grid without gutters, and it will be responsive - you only need the grid component and the responsive ones concerning the width.
If you know a little about LESS, then you can include the generated CSS in a selector of your choice.
/* LESS */
.some-thing {
/* The custom grid
...
*/
}
If not, you should add this selector in front of each rule (not that much anyway).
If you know LESS and use the LESS scripts to manage your styles, you might want to use directly the Grid mixins v2 (github)
You could define a mapping of air pressure to servo angle, for example:
def calc_angle(pressure, min_p=1000, max_p=1200): return 360 * ((pressure - min_p) / float(max_p - min_p)) angle = calc_angle(pressure)
This will linearly convert pressure
values between min_p
and max_p
to angles between 0 and 360 (you could include min_a
and max_a
to constrain the angle, too).
To pick a data structure, I wouldn't use a list but you could look up values in a dictionary:
d = {1000:0, 1001: 1.8, ...} angle = d[pressure]
but this would be rather time-consuming to type out!