In this case, they are the same. None
is a singleton object (there only ever exists one None
).
is
checks to see if the object is the same object, while == just checks if they are equivalent.
For example:
p = [1]
q = [1]
p is q # False because they are not the same actual object
p == q # True because they are equivalent
But since there is only one None
, they will always be the same, and is
will return True.
p = None
q = None
p is q # True because they are both pointing to the same "None"
keep sqljdbc_auth.dll
in your windows/system32 folder and it will work.Download sqljdbc driver from this link Unzip it and you will find sqljdbc_auth.dll
.Now keep the sqljdbc_auth.dll
inside system32 folder and run your program
<html>
<head >
<title>Welcome</title>
<style type="text/css">
#maincontainer
{
top:0px;
padding-top:0;
margin:auto; position:relative;
width:950px;
height:100%;
}
</style>
</head>
<body>
<div id="maincontainer ">
</div>
</body>
</html>
Have you included the statement include ("fileName.php");
?
Are you sure that file is in the correct directory?
When your code does the following:
You run the risk that the permissions change between 1 and 2 because you can't predict what else will be happening on the system at runtime. Therefore, your code should handle the situation where an UnauthorisedAccessException is thrown even if you have previously checked permissions.
Note that the SecurityManager class is used to check CAS permissions and doesn't actually check with the OS whether the current user has write access to the specified location (through ACLs and ACEs). As such, IsGranted will always return true for locally running applications.
Example (derived from Josh's example):
//1. Provide early notification that the user does not have permission to write.
FileIOPermission writePermission = new FileIOPermission(FileIOPermissionAccess.Write, filename);
if(!SecurityManager.IsGranted(writePermission))
{
//No permission.
//Either throw an exception so this can be handled by a calling function
//or inform the user that they do not have permission to write to the folder and return.
}
//2. Attempt the action but handle permission changes.
try
{
using (FileStream fstream = new FileStream(filename, FileMode.Create))
using (TextWriter writer = new StreamWriter(fstream))
{
writer.WriteLine("sometext");
}
}
catch (UnauthorizedAccessException ex)
{
//No permission.
//Either throw an exception so this can be handled by a calling function
//or inform the user that they do not have permission to write to the folder and return.
}
It's tricky and not recommended to try to programatically calculate the effective permissions from the folder based on the raw ACLs (which are all that are available through the System.Security.AccessControl classes). Other answers on Stack Overflow and the wider web recommend trying to carry out the action to know whether permission is allowed. This post sums up what's required to implement the permission calculation and should be enough to put you off from doing this.
If I understood what you want:
dictionary.Add("key", new List<string>());
later...
dictionary["key"].Add("string to your list");
You can get clean and clear solutions by building the appropriate predicates as helper functions. In other words, use the Python set-builder notation the same way you would write the answer with regular mathematics set-notation.
The whole idea behind set comprehensions is to let us write and reason in code the same way we do mathematics by hand.
With an appropriate predicate in hand, problem 1 simplifies to:
low_primes = {x for x in range(1, 100) if is_prime(x)}
And problem 2 simplifies to:
low_prime_pairs = {(x, x+2) for x in range(1,100,2) if is_prime(x) and is_prime(x+2)}
Note how this code is a direct translation of the problem specification, "A Prime Pair is a pair of consecutive odd numbers that are both prime."
P.S. I'm trying to give you the correct problem solving technique without actually giving away the answer to the homework problem.
If you just want to read an image in Python using the specified libraries only, I will go with
matplotlib
In matplotlib :
import matplotlib.image
read_img = matplotlib.image.imread('your_image.png')
first, create a class to hold your parameters:
public class PkRk {
public int pk { get; set; }
public int rk { get; set; }
}
then, use the Html.Action
passing the parameters:
Html.Action("PkRkAction", new { pkrk = new PkRk { pk=400, rk=500} })
and use in Controller:
public ActionResult PkRkAction(PkRk pkrk) {
return PartialView(pkrk);
}
I constantly forget the names of the colors I want to use and keep coming back to this question =)
The previous answers are great, but I find it a bit difficult to get an overview of the available colors from the posted image. I prefer the colors to be grouped with similar colors, so I slightly tweaked the matplotlib answer that was mentioned in a comment above to get a color list sorted in columns. The order is not identical to how I would sort by eye, but I think it gives a good overview.
I updated the image and code to reflect that 'rebeccapurple' has been added and the three sage colors have been moved under the 'xkcd:' prefix since I posted this answer originally.
I really didn't change much from the matplotlib example, but here is the code for completeness.
import matplotlib.pyplot as plt
from matplotlib import colors as mcolors
colors = dict(mcolors.BASE_COLORS, **mcolors.CSS4_COLORS)
# Sort colors by hue, saturation, value and name.
by_hsv = sorted((tuple(mcolors.rgb_to_hsv(mcolors.to_rgba(color)[:3])), name)
for name, color in colors.items())
sorted_names = [name for hsv, name in by_hsv]
n = len(sorted_names)
ncols = 4
nrows = n // ncols
fig, ax = plt.subplots(figsize=(12, 10))
# Get height and width
X, Y = fig.get_dpi() * fig.get_size_inches()
h = Y / (nrows + 1)
w = X / ncols
for i, name in enumerate(sorted_names):
row = i % nrows
col = i // nrows
y = Y - (row * h) - h
xi_line = w * (col + 0.05)
xf_line = w * (col + 0.25)
xi_text = w * (col + 0.3)
ax.text(xi_text, y, name, fontsize=(h * 0.8),
horizontalalignment='left',
verticalalignment='center')
ax.hlines(y + h * 0.1, xi_line, xf_line,
color=colors[name], linewidth=(h * 0.8))
ax.set_xlim(0, X)
ax.set_ylim(0, Y)
ax.set_axis_off()
fig.subplots_adjust(left=0, right=1,
top=1, bottom=0,
hspace=0, wspace=0)
plt.show()
Updated 2017-10-25. I merged my previous updates into this section.
If you would like to use additional named colors when plotting with matplotlib, you can use the xkcd crowdsourced color names, via the 'xkcd:' prefix:
plt.plot([1,2], lw=4, c='xkcd:baby poop green')
Now you have access to a plethora of named colors!
The default Tableau colors are available in matplotlib via the 'tab:' prefix:
plt.plot([1,2], lw=4, c='tab:green')
There are ten distinct colors:
You can also plot colors by their HTML hex code:
plt.plot([1,2], lw=4, c='#8f9805')
This is more similar to specifying and RGB tuple rather than a named color (apart from the fact that the hex code is passed as a string), and I will not include an image of the 16 million colors you can choose from...
For more details, please refer to the matplotlib colors documentation and the source file specifying the available colors, _color_data.py
.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Validation</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
var tags = document.getElementsByTagName("input");
var radiotags = document.getElementsByName("gender");
var compareValidator = ['compare'];
var formtag = document.getElementsByTagName("form");
function validation(){
for(var i=0;i<tags.length;i++){
var tagid = tags[i].id;
var tagval = tags[i].value;
var tagtit = tags[i].title;
var tagclass = tags[i].className;
//Validation for Textbox Start
if(tags[i].type == "text"){
if(tagval == "" || tagval == null){
var lbl = $(tags[i]).prev().text();
lbl = lbl.replace(/ : /g,'')
//alert("Please Enter "+lbl);
$(".span"+tagid).remove();
$("#"+tagid).after("<span style='color:red;' class='span"+tagid+"'>Please Enter "+lbl+"</span>");
$("#"+tagid).focus();
//return false;
}
else if(tagval != "" || tagval != null){
$(".span"+tagid).remove();
}
//Validation for compare text in two text boxes Start
//put two tags with same class name and put class name in compareValidator.
for(var j=0;j<compareValidator.length;j++){
if((tagval != "") && (tagclass.indexOf(compareValidator[j]) != -1)){
if(($('.'+compareValidator[j]).first().val()) != ($('.'+compareValidator[j]).last().val())){
$("."+compareValidator[j]+":last").after("<span style='color:red;' class='span"+tagid+"'>Invalid Text</span>");
$("span").prev("span").remove();
$("."+compareValidator[j]+":last").focus();
//return false;
}
}
}
//Validation for compare text in two text boxes End
//Validation for Email Start
if((tagval != "") && (tagclass.indexOf('email') != -1)){
//enter class = email where you want to use email validator
var reg = /^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/
if (reg.test(tagval)){
$(".span"+tagid).remove();
return true;
}
else{
$(".span"+tagid).remove();
$("#"+tagid).after("<span style='color:red;' class='span"+tagid+"'>Email is Invalid</span>");
$("#"+tagid).focus();
return false;
}
}
//Validation for Email End
}
//Validation for Textbox End
//Validation for Radio Start
else if(tags[i].type == "radio"){
//enter class = gender where you want to use gender validator
if((radiotags[0].checked == false) && (radiotags[1].checked == false)){
$(".span"+tagid).remove();
//$("#"+tagid").after("<span style='color:red;' class='span"+tagid+"'>Please Select Your Gender </span>");
$(".gender:last").next().after("<span style='color:red;' class='span"+tagid+"'> Please Select Your Gender</span>");
$("#"+tagid).focus();
i += 1;
}
else{
$(".span"+tagid).remove();
}
}
//Validation for Radio End
else{
}
}
//return false;
}
function Validate(){
if(!validation()){
return false;
}
return true;
}
function onloadevents(){
tags[tags.length -1].onclick = function(){
//return Validate();
}
for(var j=0;j<formtag.length;j++){
formtag[j].onsubmit = function(){
return Validate();
}
}
for(var i=0;i<tags.length;i++){
var tagid = tags[i].id;
var tagval = tags[i].value;
var tagtit = tags[i].title;
var tagclass = tags[i].className;
if((tags[i].type == "text") && (tagclass.indexOf('numeric') != -1)){
//enter class = numeric where you want to use numeric validator
document.getElementById(tagid).onkeypress = function(){
numeric(event);
}
}
}
}
function numeric(event){
var KeyBoardCode = (event.which) ? event.which : event.keyCode;
if (KeyBoardCode > 31 && (KeyBoardCode < 48 || KeyBoardCode > 57)){
event.preventDefault();
$(".spannum").remove();
//$(".numeric").after("<span class='spannum'>Numeric Keys Please</span>");
//$(".numeric").focus();
return false;
}
$(".spannum").remove();
return true;
}
if (document.addEventListener) {
document.addEventListener("DOMContentLoaded", onloadevents, false);
}
//window.onload = onloadevents;
</script>
</head>
<body>
<form method="post">
<label for="fname">Test 1 : </label><input type="text" title="Test 1" id="fname" class="form1"><br>
<label for="fname1">Test 2 : </label><input type="text" title="Test 2" id="fname1" class="form1 compare"><br>
<label for="fname2">Test 3 : </label><input type="text" title="Test 3" id="fname2" class="form1 compare"><br>
<label for="gender">Gender : </label>
<input type="radio" title="Male" id="fname3" class="gender" name="gender" value="Male"><label for="gender">Male</label>
<input type="radio" title="Female" id="fname4" class="gender" name="gender" value="Female"><label for="gender">Female</label><br>
<label for="fname5">Mobile : </label><input type="text" title="Mobile" id="fname5" class="numeric"><br>
<label for="fname6">Email : </label><input type="text" title="Email" id="fname6" class="email"><br>
<input type="submit" id="sub" value="Submit">
</form>
</body>
</html>
Recently ran into a problem with this and a Chrome extension that was corrupting a JSON stream when the response header labeled the content-type as 'text/html' apparently extensions can and will use the response header to alter the content prior to further processing by the browser. Changing the content-type fixed the issue.
I think everyone missed the "suddenly" part of this question. Most likely, your .jshintrc has a syntax error, so it's not including the 'browser' line. Run it through a json validator to see where the error is.
If it is exactly null
(as opposed to not set):
db.states.find({"cities.name": null})
(but as javierfp points out, it also matches documents that have no cities array at all, I'm assuming that they do).
If it's the case that the property is not set:
db.states.find({"cities.name": {"$exists": false}})
I've tested the above with a collection created with these two inserts:
db.states.insert({"cities": [{name: "New York"}, {name: null}]})
db.states.insert({"cities": [{name: "Austin"}, {color: "blue"}]})
The first query finds the first state, the second query finds the second. If you want to find them both with one query you can make an $or
query:
db.states.find({"$or": [
{"cities.name": null},
{"cities.name": {"$exists": false}}
]})
The accepted answer still did not work for me
I used
git rm -r --cached .
git add .
git commit -m "fixing .gitignore"
Found the answer from here
User this link for perfact solution for ws https://httpd.apache.org/docs/2.4/mod/mod_proxy_wstunnel.html
You have to just do below step..
Go to /etc/apache2/mods-available
Step...1
Enable mode proxy_wstunnel.load
by using below command
$a2enmod proxy_wstunnel.load
Step...2
Go to /etc/apache2/sites-available
and add below line in your .conf file inside virtual host
ProxyPass "/ws2/" "ws://localhost:8080/"
ProxyPass "/wss2/" "wss://localhost:8080/"
Note : 8080 mean your that your tomcat running port because we want to connect ws
where our War file putted in tomcat and tomcat serve apache for ws
.
thank you
My Configuration
ws://localhost/ws2/ALLCAD-Unifiedcommunication-1.0/chatserver?userid=4 =Connected
A little bit simpler using regex and toJSON()
.
var now = new Date();
var timeRegex = /^.*T(\d{2}):(\d{2}):(\d{2}).*$/
var dateRegex = /^(\d{4})-(\d{2})-(\d{2})T.*$/
var dateData = dateRegex.exec(now.toJSON());
var timeData = timeRegex.exec(now.toJSON());
var myFormat = dateData[1]+dateData[2]+dateData[3]+timeData[1]+timeData[2]+timeData[3]
Which at the time of writing gives you "20151111180924"
.
The good thing of using toJSON()
is that everything comes already padded.
Try following query to format datetime in sql server
FORMAT (frr.valid_from , 'dd/MM/yyyy hh:mm:ss')
I'm happy to report that since this question was asked, now there is a satisfactory answer! Take a look at this terrific package:
https://github.com/mysqludf/lib_mysqludf_preg
Sample SQL:
SELECT PREG_REPLACE('/(.*?)(fox)/' , 'dog' , 'the quick brown fox' ) AS demo;
I found the package from this blog post as linked on this question.
I think an elegant solution is to use the where
method (also see the API docs
):
In [37]: values = df.Prices * df.Amount
In [38]: df['Values'] = values.where(df.Action == 'Sell', other=-values)
In [39]: df
Out[39]:
Prices Amount Action Values
0 3 57 Sell 171
1 89 42 Sell 3738
2 45 70 Buy -3150
3 6 43 Sell 258
4 60 47 Sell 2820
5 19 16 Buy -304
6 56 89 Sell 4984
7 3 28 Buy -84
8 56 69 Sell 3864
9 90 49 Buy -4410
Further more this should be the fastest solution.
That's no problem.
@Html.Partial("../Controller/View", model)
or
@Html.Partial("~/Views/Controller/View.cshtml", model)
Should do the trick.
If you want to pass through the (other) controller, you can use:
@Html.Action("action", "controller", parameters)
or any of the other overloads
SELECT id, GROUP_CONCAT(CONCAT_WS(':', Name, CAST(Value AS CHAR(7))) SEPARATOR ',') AS result
FROM test GROUP BY id
you must use cast or convert, otherwise will be return BLOB
result is
id Column
1 A:4,A:5,B:8
2 C:9
you have to handle result once again by program such as python or java
As many have already told you:
mainList.get(3);
Be sure to check the ArrayList Javadoc.
Also, be careful with the arrays indices: in Java, the first element is at index 0
. So if you are trying to get the third element, your solution would be mainList.get(2);
Just in case you were wondering how to rename columns during aggregation, here's how for
df.groupby('Company Name')['Amount'].agg(MySum='sum', MyCount='count')
Or,
df.groupby('Company Name').agg(MySum=('Amount', 'sum'), MyCount=('Amount', 'count'))
MySum MyCount
Company Name
Vifor Pharma UK Ltd 4207.93 5
Ping was designed to do exactly what you're looking to do. However, if the site blocks ICMP echo, then you can always do the telnet to port 80 of some site, wget, or curl.
You can manage to do this without any external JavaScript library with the help of JavaScript Date method like following:
var date = new Date(null);
date.setSeconds(SECONDS); // specify value for SECONDS here
var result = date.toISOString().substr(11, 8);
Or, as per @Frank's comment; a one liner:
new Date(SECONDS * 1000).toISOString().substr(11, 8);
You add your ActionListener
twice to button
. So correct your code for button2
to
JButton button2 = new JButton("hello agin2");
panel.add(button2);
button2.addActionListener (new Action2());//note the button2 here instead of button
Furthermore, perform your Swing operations on the correct thread by using EventQueue.invokeLater
As what Ray said, you can stop it by modifying content-header like -
$http.defaults.headers.post["Content-Type"] = "text/plain";
For Example -
angular.module('myApp').factory('User', ['$resource','$http',
function($resource,$http){
$http.defaults.headers.post["Content-Type"] = "text/plain";
return $resource(API_ENGINE_URL+'user/:userId', {}, {
query: {method:'GET', params:{userId:'users'}, isArray:true},
getLoggedIn:{method:'GET'}
});
}]);
Or directly to a call -
var req = {
method: 'POST',
url: 'http://example.com',
headers: {
'Content-Type': 'text/plain'
},
data: { test: 'test' }
}
$http(req).then(function(){...}, function(){...});
This will not send any pre-flight option request.
NOTE: Request should not have any custom header parameter, If request header contains any custom header then browser will make pre-flight request, you cant avoid it.
In your example, Java is performing integer arithmetic, rounding off the result of the division.
Based on your question, you would like to perform floating-point arithmetic. To do so, at least one of your terms must be specified as (or converted to) floating-point:
Specifying floating point:
3.0/2
3.0/2.0
3/2.0
Converting to floating point:
int a = 2;
int b = 3;
float q = ((float)a)/b;
or
double q = ((double)a)/b;
(See Java Traps: double and Java Floating-Point Number Intricacies for discussions on float
and double
)
$_GET
contains the keys / values that are passed to your script in the URL.
If you have the following URL :
http://www.example.com/test.php?a=10&b=plop
Then $_GET
will contain :
array
'a' => string '10' (length=2)
'b' => string 'plop' (length=4)
Of course, as $_GET
is not read-only, you could also set some values from your PHP code, if needed :
$_GET['my_value'] = 'test';
But this doesn't seem like good practice, as $_GET
is supposed to contain data from the URL requested by the client.
Take a look at this: Entity Framework don't create database
I would try giving the database a different name. Sometimes you can run into problems with SQL Express when trying to create a database with the same name a second time. There is a way to fix this using SQL Server Management Studio but it's generally easier to just use a different database name.
Edit This answer was accepted because it confirms the bug and the workaround used by OP (renaming database could help). I totally agree that renaming the database is not really an acceptable way, and does not totally solve the issue. Unfortunatly I didn't check the other ways to really solve it in SSMS.
You can't: It's a security feature in all modern browsers.
For IE8, it's off by default, but can be reactivated using a security setting:
When a file is selected by using the input type=file object, the value of the value property depends on the value of the "Include local directory path when uploading files to a server" security setting for the security zone used to display the Web page containing the input object.
The fully qualified filename of the selected file is returned only when this setting is enabled. When the setting is disabled, Internet Explorer 8 replaces the local drive and directory path with the string C:\fakepath\ in order to prevent inappropriate information disclosure.
In all other current mainstream browsers I know of, it is also turned off. The file name is the best you can get.
More detailed info and good links in this question. It refers to getting the value server-side, but the issue is the same in JavaScript before the form's submission.
I would say via the HTML canvas tag.
You can find here a post by @Georg talking about a small code by the Opera dev :
// Get the CanvasPixelArray from the given coordinates and dimensions.
var imgd = context.getImageData(x, y, width, height);
var pix = imgd.data;
// Loop over each pixel and invert the color.
for (var i = 0, n = pix.length; i < n; i += 4) {
pix[i ] = 255 - pix[i ]; // red
pix[i+1] = 255 - pix[i+1]; // green
pix[i+2] = 255 - pix[i+2]; // blue
// i+3 is alpha (the fourth element)
}
// Draw the ImageData at the given (x,y) coordinates.
context.putImageData(imgd, x, y);
This invert the image by using the R, G and B value of each pixel. You could easily store the RGB values, then round up the Red, Green and Blue arrays, and finally converting them back into an HEX code.
proxy issue can cause this. IIS webconfig put this in
<defaultProxy useDefaultCredentials="true" enabled="true">
<proxy usesystemdefault="True" />
</defaultProxy>
string queryString = "Default.aspx?Agent=10&Language=2"; //Request.QueryString.ToString();
string parameterToRemove="Language"; //parameter which we want to remove
string regex=string.Format("(&{0}=[^&\s]+|{0}=[^&\s]+&?)",parameterToRemove);
string finalQS = Regex.Replace(queryString, regex, "");
You may use this following code actually it is rough but plz check it out
db = openOrCreateDatabase("sms.db", SQLiteDatabase.CREATE_IF_NECESSARY, null);
Cursor cc = db.rawQuery("SELECT * FROM datatable", null);
final ArrayList<String> row1 = new ArrayList<String>();
final ArrayList<String> row2 = new ArrayList<String>();
if(cc!=null) {
cc.moveToFirst();
startManagingCursor(cc);
for (int i=0; i<cc.getCount(); i++) {
String number = cc.getString(0);
String message = cc.getString(1);
row1.add(number);
row2.add(message);
final EditText et3 = (EditText) findViewById(R.id.editText3);
final EditText et4 = (EditText) findViewById(R.id.editText4);
Button bt1 = (Button) findViewById(R.id.button1);
bt1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button1:
et3.setText(row1.get(count));
et4.setText(row2.get(count));
count++;
break;
default:
break;
}
}
});
cc.moveToNext();
}
Depending on a number of factors, it may actually be faster to copy the list to an array and then use a Quicksort.
The reason this might be faster is that an array has much better cache performance than a linked list. If the nodes in the list are dispersed in memory, you may be generating cache misses all over the place. Then again, if the array is large you will get cache misses anyway.
Mergesort parallelises better, so it may be a better choice if that is what you want. It is also much faster if you perform it directly on the linked list.
Since both algorithms run in O(n * log n), making an informed decision would involve profiling them both on the machine you would like to run them on.
--- EDIT
I decided to test my hypothesis and wrote a C-program which measured the time (using clock()
) taken to sort a linked list of ints. I tried with a linked list where each node was allocated with malloc()
and a linked list where the nodes were laid out linearly in an array, so the cache performance would be better. I compared these with the built-in qsort, which included copying everything from a fragmented list to an array and copying the result back again. Each algorithm was run on the same 10 data sets and the results were averaged.
These are the results:
N = 1000:
Fragmented list with merge sort: 0.000000 seconds
Array with qsort: 0.000000 seconds
Packed list with merge sort: 0.000000 seconds
N = 100000:
Fragmented list with merge sort: 0.039000 seconds
Array with qsort: 0.025000 seconds
Packed list with merge sort: 0.009000 seconds
N = 1000000:
Fragmented list with merge sort: 1.162000 seconds
Array with qsort: 0.420000 seconds
Packed list with merge sort: 0.112000 seconds
N = 100000000:
Fragmented list with merge sort: 364.797000 seconds
Array with qsort: 61.166000 seconds
Packed list with merge sort: 16.525000 seconds
Conclusion:
At least on my machine, copying into an array is well worth it to improve the cache performance, since you rarely have a completely packed linked list in real life. It should be noted that my machine has a 2.8GHz Phenom II, but only 0.6GHz RAM, so the cache is very important.
As stated in this answer:
Application.Wait (Now + TimeValue("0:00:01"))
will wait for 1 second
If you are assigning default value for boolean fact then ensure that no quotes is used inside default().
- name: create bool default
set_fact:
name: "{{ my_bool | default(true) }}"
For other variables used the same method given in verified answer.
- name: Create user
user:
name: "{{ my_variable | default('default_value') }}"
If you need a directive more advanced, I recomend the solution that I implemnted, correctly tested on Internet Explorer 11, Chrome and FireFox.
I hope it, will be helpfull.
HTML :
<a href="#" class="btn btn-default" file-name="'fileName.extension'" ng-click="getFile()" file-download="myBlobObject"><i class="fa fa-file-excel-o"></i></a>
DIRECTIVE :
directive('fileDownload',function(){
return{
restrict:'A',
scope:{
fileDownload:'=',
fileName:'=',
},
link:function(scope,elem,atrs){
scope.$watch('fileDownload',function(newValue, oldValue){
if(newValue!=undefined && newValue!=null){
console.debug('Downloading a new file');
var isFirefox = typeof InstallTrigger !== 'undefined';
var isSafari = Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0;
var isIE = /*@cc_on!@*/false || !!document.documentMode;
var isEdge = !isIE && !!window.StyleMedia;
var isChrome = !!window.chrome && !!window.chrome.webstore;
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
var isBlink = (isChrome || isOpera) && !!window.CSS;
if(isFirefox || isIE || isChrome){
if(isChrome){
console.log('Manage Google Chrome download');
var url = window.URL || window.webkitURL;
var fileURL = url.createObjectURL(scope.fileDownload);
var downloadLink = angular.element('<a></a>');//create a new <a> tag element
downloadLink.attr('href',fileURL);
downloadLink.attr('download',scope.fileName);
downloadLink.attr('target','_self');
downloadLink[0].click();//call click function
url.revokeObjectURL(fileURL);//revoke the object from URL
}
if(isIE){
console.log('Manage IE download>10');
window.navigator.msSaveOrOpenBlob(scope.fileDownload,scope.fileName);
}
if(isFirefox){
console.log('Manage Mozilla Firefox download');
var url = window.URL || window.webkitURL;
var fileURL = url.createObjectURL(scope.fileDownload);
var a=elem[0];//recover the <a> tag from directive
a.href=fileURL;
a.download=scope.fileName;
a.target='_self';
a.click();//we call click function
}
}else{
alert('SORRY YOUR BROWSER IS NOT COMPATIBLE');
}
}
});
}
}
})
IN CONTROLLER:
$scope.myBlobObject=undefined;
$scope.getFile=function(){
console.log('download started, you can show a wating animation');
serviceAsPromise.getStream({param1:'data1',param1:'data2', ...})
.then(function(data){//is important that the data was returned as Aray Buffer
console.log('Stream download complete, stop animation!');
$scope.myBlobObject=new Blob([data],{ type:'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'});
},function(fail){
console.log('Download Error, stop animation and show error message');
$scope.myBlobObject=[];
});
};
IN SERVICE:
function getStream(params){
console.log("RUNNING");
var deferred = $q.defer();
$http({
url:'../downloadURL/',
method:"PUT",//you can use also GET or POST
data:params,
headers:{'Content-type': 'application/json'},
responseType : 'arraybuffer',//THIS IS IMPORTANT
})
.success(function (data) {
console.debug("SUCCESS");
deferred.resolve(data);
}).error(function (data) {
console.error("ERROR");
deferred.reject(data);
});
return deferred.promise;
};
BACKEND(on SPRING):
@RequestMapping(value = "/downloadURL/", method = RequestMethod.PUT)
public void downloadExcel(HttpServletResponse response,
@RequestBody Map<String,String> spParams
) throws IOException {
OutputStream outStream=null;
outStream = response.getOutputStream();//is important manage the exceptions here
ObjectThatWritesOnOutputStream myWriter= new ObjectThatWritesOnOutputStream();// note that this object doesn exist on JAVA,
ObjectThatWritesOnOutputStream.write(outStream);//you can configure more things here
outStream.flush();
return;
}
At ms end Rx lev ranges 0 to -120 dbm Mean antenna power which received at ms end alway less than 1mW.
Thats why it always -ve.
byte b1 = (byte) 129;
String s1 = String.format("%8s", Integer.toBinaryString(b1 & 0xFF)).replace(' ', '0');
System.out.println(s1); // 10000001
byte b2 = (byte) 2;
String s2 = String.format("%8s", Integer.toBinaryString(b2 & 0xFF)).replace(' ', '0');
System.out.println(s2); // 00000010
DEMO.
Intersect the targets with the haystack and make sure the intersection is precisely equal to the targets:
$haystack = array(...);
$target = array('foo', 'bar');
if(count(array_intersect($haystack, $target)) == count($target)){
// all of $target is in $haystack
}
Note that you only need to verify the size of the resulting intersection is the same size as the array of target values to say that $haystack
is a superset of $target
.
To verify that at least one value in $target
is also in $haystack
, you can do this check:
if(count(array_intersect($haystack, $target)) > 0){
// at least one of $target is in $haystack
}
Use the following code
$("#modal").trigger('click');
This may help you:
CREATE TABLE "custinf"
(
"CUST_ID" INT not null primary key
GENERATED ALWAYS AS IDENTITY
(START WITH 1, INCREMENT BY 1),
"FNAME" VARCHAR(50),
"LNAME" VARCHAR(50),
"ADDR" VARCHAR(100),
"SUBURB" VARCHAR(20),
"PCODE" INTEGER,
"PHONE" INTEGER,
"MOB" INTEGER,
"EMAIL" VARCHAR(100),
"COMM" VARCHAR(450)
);
That's how i got mine to work... to ages to get the frigging thing to actually understand me but that's the nature of code :D
BTW!- There is a way to do it in the ide interface goto the services window, expand your connection, expand your projects name, expand tables, right click indexes and select add index... the rest of the process speaks for itself really...
Unfortunately while I thought these answers may have worked for me, I struggled with a solution, as I'm using tables inside responsive tables - where the overflow-x is played with.
So, with that in mind, have a look at this link for a cleaner way, which doesn't have the weird width overflow issues. It worked for me in the end and was very easy to implement.
Better use Apache Commons HttpClient, that is also included in android already. Have a look at Android Developer: Apache HTTP Client Package Summary for general api info.
I realize this was long ago answered but want to suggest an additional approach that avoids the nested try-with-resources double block.
public List<User> getUser(int userId) {
try (Connection con = DriverManager.getConnection(myConnectionURL);
PreparedStatement ps = createPreparedStatement(con, userId);
ResultSet rs = ps.executeQuery()) {
// process the resultset here, all resources will be cleaned up
} catch (SQLException e) {
e.printStackTrace();
}
}
private PreparedStatement createPreparedStatement(Connection con, int userId) throws SQLException {
String sql = "SELECT id, username FROM users WHERE id = ?";
PreparedStatement ps = con.prepareStatement(sql);
ps.setInt(1, userId);
return ps;
}
It is not possible to write exception-safe code under the assumption that "any line can throw". The design of exception-safe code relies critically on certain contracts/guarantees that you are supposed to expect, observe, follow and implement in your code. It is absolutely necessary to have code that is guaranteed to never throw. There are other kinds of exception guarantees out there.
In other words, creating exception-safe code is to a large degree a matter of program design not just a matter of plain coding.
Also if you want selected field from table and aggregated then as array .
SELECT json_agg(json_build_object('data_a',a,
'data_b',b,
)) from t;
The result will come .
[{'data_a':1,'data_b':'value1'}
{'data_a':2,'data_b':'value2'}]
Is this what you mean?
SELECT DISTINCT C.valueC
FROM
C
INNER JOIN B ON C.id = B.lookupC
INNER JOIN A ON B.id = A.lookupB
If you are using a non default MySQL port number then do the following:
33747
then paste the following
$cfg['Servers'][$i]['port'] = 33747;
under the
/* Authentication type and info */
section.import networkx as nx
import matplotlib.pyplot as plt
G = nx.DiGraph()
G.add_node("A")
G.add_node("B")
G.add_node("C")
G.add_node("D")
G.add_node("E")
G.add_node("F")
G.add_node("G")
G.add_edge("A","B")
G.add_edge("B","C")
G.add_edge("C","E")
G.add_edge("C","F")
G.add_edge("D","E")
G.add_edge("F","G")
print(G.nodes())
print(G.edges())
pos = nx.spring_layout(G)
nx.draw_networkx_nodes(G, pos)
nx.draw_networkx_labels(G, pos)
nx.draw_networkx_edges(G, pos, edge_color='r', arrows = True)
plt.show()
SELECT RIGHT(MyColumn, LEN(MyColumn) - 4) AS MyTrimmedColumn
Edit: To explain, RIGHT takes 2 arguments - the string (or column) to operate on, and the number of characters to return (starting at the "right" side of the string). LEN returns the length of the column data, and we subtract four so that our RIGHT function leaves the leftmost 4 characters "behind".
Hope this makes sense.
Edit again - I just read Andrew's response, and he may very well have interperpereted correctly, and I might be mistaken. If this is the case (and you want to UPDATE the table rather than just return doctored results), you can do this:
UPDATE MyTable
SET MyColumn = RIGHT(MyColumn, LEN(MyColumn) - 4)
He's on the right track, but his solution will keep the 4 characters at the start of the string, rather than discarding said 4 characters.
I think Object.keys is the best solution to this problem. For anyone that comes across this answer and is trying to find out why Object.keys is giving them ['0', '1'] instead of ['key1', 'key2'], a cautionary tale - beware the difference between "of" and "in":
I was already using Object.keys, something similar to this:
interface demo {
key: string;
value: string;
}
createDemo(mydemo: any): Array<demo> {
const tempdemo: Array<demo> = [];
// Caution: use "of" and not "in"
for (const key of Object.keys(mydemo)) {
tempdemo.push(
{ key: key, value: mydemo[key]}
);
}
return tempdemo;
}
However, instead of
for (const key OF Object.keys(mydemo)) {
I had inadvertently wrote
for (const key IN Object.keys(mydemo)) {
which "worked" perfectly fine without any error and returned
[{key: '0', value: undefined}, {key: '1', value: undefined}]
That cost me about 2 hours googling and cursing..
(slaps forehead)
Nowadays there is a new(ish) API to do this directly. It works on modern browsers and on HTTPS (and localhost) only. Not supported by IE11.
IE11 has its own API.
And the workaround in the accepted answer can be used for unsecure hosts.
function copyToClipboard (text) {
if (navigator.clipboard) { // default: modern asynchronous API
return navigator.clipboard.writeText(text);
} else if (window.clipboardData && window.clipboardData.setData) { // for IE11
window.clipboardData.setData('Text', text);
return Promise.resolve();
} else {
// workaround: create dummy input
const input = h('input', { type: 'text' });
input.value = text;
document.body.append(input);
input.focus();
input.select();
document.execCommand('copy');
input.remove();
return Promise.resolve();
}
}
Note: it uses Hyperscript to create the input element (but should be easy to adapt)
There is no need to make the input invisible, as it is added and removed so fast. Also when hidden (even using some clever method) some browsers will detect it and prevent the copy operation.
Since you don't call Num.__init__
, the field "n1" never gets created. Call it and then it will be there.
Check this page http://www.alanwood.net/unicode/geometric_shapes.html, first is "9650 ? 25B2 BLACK UP-POINTING TRIANGLE (present in WGL4)" and 2nd "9660 ? 25BC BLACK DOWN-POINTING TRIANGLE (present in WGL4)".
Best way is use DateTime object to convert your date.
$myDateTime = DateTime::createFromFormat('Y-m-d', $weddingdate);
$formattedweddingdate = $myDateTime->format('d-m-Y');
Note: It will support for PHP 5 >= 5.3.0 only.
Code for one liner isFlashExists
variable:
<script type='text/javascript'
src='//ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js'> </script>
<script type='text/javascript'>
var isFlashExists = swfobject.hasFlashPlayerVersion('1') ? true : false ;
if (isFlashExists) {
alert ('flash exists');
} else {
alert ('NO flash');
}
</script>
Note that there is an alternative like this: swfobject.getFlashPlayerVersion();
You can set the line-height
in pixels instead of percentage. Is that what you mean?
You should always use Keychain to store usernames and passwords, and since it's stored securely and only accessible to your app, there is no need to delete it when app quits (if that was your concern).
Apple provides sample code that stores, reads and deletes keychain items and here is how to use the keychain wrapper class from that sample which greatly simplifies using Keychain.
Include Security.framework (in Xcode 3 right-click on frameworks folder and add existing framework. In Xcode 4 select your project, then select target, go to Build Phases tab and click + under Link Binary With Files) and KeychainItemWrapper .h & .m files into your project, #import the .h file wherever you need to use keychain and then create an instance of this class:
KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"YourAppLogin" accessGroup:nil];
(YourAppLogin can be anything you chose to call your Keychain item and you can have multiple items if required)
Then you can set the username and password using:
[keychainItem setObject:@"password you are saving" forKey:kSecValueData];
[keychainItem setObject:@"username you are saving" forKey:kSecAttrAccount];
Get them using:
NSString *password = [keychainItem objectForKey:kSecValueData];
NSString *username = [keychainItem objectForKey:kSecAttrAccount];
Or delete them using:
[keychainItem resetKeychainItem];
If you see an empty page, enable JavaScript.
webView.setWebViewClient(new WebViewClient());
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webView.loadUrl(url);
@Mayur "4.2 [Using query with complex JOIN]" with Common Table Expressions (CTEs) did the trick for me.
WITH cte AS (
SELECT e.id, e.postcode
FROM employees e
LEFT JOIN locations lc ON lc.postcode=cte.postcode
WHERE e.id=1
)
UPDATE employee_location SET lat=lc.lat, longitude=lc.longi
FROM cte
WHERE employee_location.id=cte.id;
Hope this helps... :D
download this app from here it will help you to rum all commands. I have run netcfg and it gives the result as attached in screen.
** -> "xampp->mysql->data" cut all files from data folder and paste to another folder
-> now restart mysql
-> paste all folders from your folder to myslq->data folder
and also paste ib_logfile0.ib_logfile1 , ibdata1 into data folder from your folder.
your database and your data is now available in phpmyadmin..**
Use a reverse dict.
fun_dict = {'fun1': fun1,
'fun2': fun2,
'fun3': fun3}
r_dict = dict(zip(fun_dict.values(), fun_dict.keys()))
The reverse dict will map each function reference to the exact name you gave it in fun_dict, which may or may not be the name you used when you defined the function. And, this technique generalizes to other objects, including integers.
For extra fun and insanity, you can store the forward and reverse values in the same dict. I wouldn't do that if you were mapping strings to strings, but if you are doing something like function references and strings, it's not too crazy.
In cell A1, enter the time.
In cell B2, enter =A1+1/24
You want the --stat
option of git diff
, or if you're looking to parse this in a script, the --numstat
option.
git diff --stat <commit-ish> <commit-ish>
--stat
produces the human-readable output you're used to seeing after merges; --numstat
produces a nice table layout that scripts can easily interpret.
I somehow missed that you were looking to do this on multiple commits at the same time - that's a task for git log
. Ron DeVera touches on this, but you can actually do a lot more than what he mentions. Since git log
internally calls the diff machinery in order to print requested information, you can give it any of the diff stat options - not just --shortstat
. What you likely want to use is:
git log --author="Your name" --stat <commit1>..<commit2>
but you can use --numstat
or --shortstat
as well. git log
can also select commits in a variety other ways - have a look at the documentation. You might be interested in things like --since
(rather than specifying commit ranges, just select commits since last week) and --no-merges
(merge commits don't actually introduce changes), as well as the pretty output options (--pretty=oneline, short, medium, full...
).
Here's a one-liner to get total changes instead of per-commit changes from git log (change the commit selection options as desired - this is commits by you, from commit1 to commit2):
git log --numstat --pretty="%H" --author="Your Name" commit1..commit2 | awk 'NF==3 {plus+=$1; minus+=$2} END {printf("+%d, -%d\n", plus, minus)}'
(you have to let git log print some identifying information about the commit; I arbitrarily chose the hash, then used awk to only pick out the lines with three fields, which are the ones with the stat information)
Cook book to use different ways of pysftp.CnOpts() and hostkeys options.
Source : https://pysftp.readthedocs.io/en/release_0.2.9/cookbook.html
Host Key checking is enabled by default. It will use ~/.ssh/known_hosts by default. If you wish to disable host key checking (NOT ADVISED) you will need to modify the default CnOpts and set the .hostkeys to None.
import pysftp
cnopts = pysftp.CnOpts()
cnopts.hostkeys = None
with pysftp.Connection('host', username='me', password='pass', cnopts=cnopts):
# do stuff here
To use a completely different known_hosts file, you can override CnOpts looking for ~/.ssh/known_hosts by specifying the file when instantiating.
import pysftp
cnopts = pysftp.CnOpts(knownhosts='path/to/your/knownhostsfile')
with pysftp.Connection('host', username='me', password='pass', cnopts=cnopts):
# do stuff here
If you wish to use ~/.ssh/known_hosts but add additional known host keys you can merge with update additional known_host format files by using .load method.
import pysftp
cnopts = pysftp.CnOpts()
cnopts.hostkeys.load('path/to/your/extra_knownhosts')
with pysftp.Connection('host', username='me', password='pass', cnopts=cnopts):
# do stuff here
If you only want to remove the boundary quotes:
function stripquotes(a) {
if (a.charAt(0) === '"' && a.charAt(a.length-1) === '"') {
return a.substr(1, a.length-2);
}
return a;
}
This approach won't touch the string if it doesn't look like "text in quotes"
.
You're thinking too complicated. It's actually just $('#'+openaddress)
.
You can certainly us the a Select Agregation statement as Postulated by Ben James, However This will result in a view with as many columns as you have tables. An alternate method may be as follows:
SELECT COUNT(user_table.id) AS TableCount,'user_table' AS TableSource FROM user_table
UNION SELECT COUNT(cat_table.id) AS TableCount,'cat_table' AS TableSource FROM cat_table
UNION SELECT COUNT(course_table.id) AS TableCount, 'course_table' AS TableSource From course_table;
The Nice thing about an approch like this is that you can explicitly write the Union statements and generate a view or create a temp table to hold values that are added consecutively from a Proc cals using variables in place of your table names. I tend to go more with the latter, but it really depends on personal preference and application. If you are sure the tables will never change, you want the data in a single row format, and you will not be adding tables. stick with Ben James' solution. Otherwise I'd advise flexibility, you can always hack a cross tab struc.
To preselect an option when the form is initialized, the value of the select element must be set to an element attribute of the array you are iterating over and setting the value of option to. Which is the key attribute in this case.
From your example.
<select [id]="question.key" [formControlName]="question.key">
<option *ngFor="let opt of question.options" [value]="opt.key"</option>
</select>
You are iterating over 'options' to create the select options. So the value of select must be set to the key attribute of an item in options(the one you want to display on initialization). This will display the default of select as the option whose value matches the value you set for select.
You can achieve this by setting the value of the select element in the onInit method like so.
ngOnInit(): void{
myForm : new FormGroup({
...
question.key : new FormControl(null)
})
// Get desired initial value to display on <select>
desiredValue = question.options.find(opt => opt === initialValue)
this.myForm.get(question.key).setValue(desiredValue.key)
}
To remove the file from the index, use:
git reset myfile
This should not affect your local copy or anyone else's.
For folks interested in using JDOM, but afraid that hasn't been updated in a while (especially not leveraging Java generics), there is a fork called CoffeeDOM which exactly addresses these aspects and modernizes the JDOM API, read more here:
http://cdmckay.org/blog/2011/05/20/introducing-coffeedom-a-jdom-fork-for-java-5/
and download it from the project page at:
Here is how to clear all trash & caches (without other private data in browsers) by a command line. This is a command line batch script that takes care of all trash (as of April 2014):
erase "%TEMP%\*.*" /f /s /q
for /D %%i in ("%TEMP%\*") do RD /S /Q "%%i"
erase "%TMP%\*.*" /f /s /q
for /D %%i in ("%TMP%\*") do RD /S /Q "%%i"
erase "%ALLUSERSPROFILE%\TEMP\*.*" /f /s /q
for /D %%i in ("%ALLUSERSPROFILE%\TEMP\*") do RD /S /Q "%%i"
erase "%SystemRoot%\TEMP\*.*" /f /s /q
for /D %%i in ("%SystemRoot%\TEMP\*") do RD /S /Q "%%i"
@rem Clear IE cache - (Deletes Temporary Internet Files Only)
RunDll32.exe InetCpl.cpl,ClearMyTracksByProcess 8
erase "%LOCALAPPDATA%\Microsoft\Windows\Tempor~1\*.*" /f /s /q
for /D %%i in ("%LOCALAPPDATA%\Microsoft\Windows\Tempor~1\*") do RD /S /Q "%%i"
@rem Clear Google Chrome cache
erase "%LOCALAPPDATA%\Google\Chrome\User Data\*.*" /f /s /q
for /D %%i in ("%LOCALAPPDATA%\Google\Chrome\User Data\*") do RD /S /Q "%%i"
@rem Clear Firefox cache
erase "%LOCALAPPDATA%\Mozilla\Firefox\Profiles\*.*" /f /s /q
for /D %%i in ("%LOCALAPPDATA%\Mozilla\Firefox\Profiles\*") do RD /S /Q "%%i"
pause
I am pretty sure it will run for some time when you first run it :) Enjoy!
Bit counter-intuitive, but you must first setup a SDK for Java projects. On the bottom right of the IntelliJ welcome screen, select 'Configure > Project Defaults > Project Structure'.
The Project tab on the left will show that you have no SDK selected:
Therefore, you must click the 'New...' button on the right hand side of the dropdown and point it to your JDK. After that, you can go back to the import screen and it should be populated with your JAVA_HOME variable, providing you have this set.
Seems the SMTP as internet standard uses only reliable Transport protocol. RFC821 has TCP, NCP, NITS as examples!
You might want to remove the accents and diacritic signs first, then on each character position check if the "simplified" string is an ascii letter - if it is, the original position shall contain word characters, if not, it can be removed.
Simplification from the above Andrew's answer leads to this key theme to generate the half border.
theme (panel.border = element_blank(),
axis.line = element_line(color='black'))
Some good answers, but the problem with all solutions I have tried is that the images doesn´t fade into each other. Instead the first one fades completely out and than the next one fades in.
After a few hours of testing a found this sollution. Thx to http://www.1squarepear.com/adding-a-responsive-bootstrap-image-carousel-that-fades-instead-of-slides/
Add this in the css:
.carousel.fade {
opacity: 1;
}
.carousel.fade .item {
transition: opacity ease-out .7s;
left: 0;
opacity: 0; /* hide all slides */
top: 0;
position: absolute;
width: 100%;
display: block;
}
.carousel.fade .item:first-child {
top: auto;
opacity: 1; /* show first slide */
position: relative;
}
.carousel.fade .item.active {
opacity: 1;
}
I believe your second activity is probably not linked to your main activity as a child activity. Check your AndroidManifest.xml
file and see if the <activity>
entry for your child activity includes a android:parentActivityName
attribute. It should look something like this:
<?xml ...?>
...
<activity
android:name=".MainActivity"
...>
</activity>
<activity
android:name=".ChildActivity"
android:parentActivityName=".MainActivity"
...>
</activity>
...
Try this:
$objPHPExcel->getActiveSheet()->getRowDimension('1')->setRowHeight(40);
If I remember correctly (from a couple of years ago), one of the senior developers was talking about a fast way to bzero() on PowerPC (specs said we needed to zero almost all the memory on power up). It might not translate well (if at all) to x86, but it could be worth exploring.
The idea was to load a data cache line, clear that data cache line, and then write the cleared data cache line back to memory.
For what it is worth, I hope it helps.
yes, we can declare an abstract class without any abstract method. the purpose of declaring a class as abstract is not to instantiate the class.
so two cases
1) abstract class with abstract methods.
these type of classes, we must inherit a class from this abstract class and must override the abstract methods in our class, ex: GenricServlet class
2) abstract class without abstract methods.
these type of classes, we must inherit a class from this abstract class, ex: HttpServlet class purpose of doing is although you if you don't implement your logic in child class you can get the parent logic
Another way to throw an exceptions is assert
. You can use assert to verify a condition is being fulfilled if not then it will raise AssertionError
. For more details have a look here.
def avg(marks):
assert len(marks) != 0,"List is empty."
return sum(marks)/len(marks)
mark2 = [55,88,78,90,79]
print("Average of mark2:",avg(mark2))
mark1 = []
print("Average of mark1:",avg(mark1))
Microsoft now recommends using an IHttpClientFactory
with the following benefits:
HttpClient
instances. For example, a client named github could be
registered and configured to access GitHub. A default client can be
registered for general access.HttpClient
. Provides extensions for Polly-based middleware to take
advantage of delegating handlers in HttpClient
.HttpClientMessageHandler
instances. Automatic management avoids
common DNS (Domain Name System) problems that occur when manually
managing HttpClient
lifetimes.ILogger
) for all requests
sent through clients created by the factory.https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-requests?view=aspnetcore-3.1
Setup:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public void ConfigureServices(IServiceCollection services)
{
services.AddHttpClient();
// Remaining code deleted for brevity.
POST example:
public class BasicUsageModel : PageModel
{
private readonly IHttpClientFactory _clientFactory;
public BasicUsageModel(IHttpClientFactory clientFactory)
{
_clientFactory = clientFactory;
}
public async Task CreateItemAsync(TodoItem todoItem)
{
var todoItemJson = new StringContent(
JsonSerializer.Serialize(todoItem, _jsonSerializerOptions),
Encoding.UTF8,
"application/json");
var httpClient = _clientFactory.CreateClient();
using var httpResponse =
await httpClient.PostAsync("/api/TodoItems", todoItemJson);
httpResponse.EnsureSuccessStatusCode();
}
Also check this answer from here: Cannot manually edit applicationhost.config
The answer is simple, if not that obvious: win2008 is 64bit, notepad++ is 32bit. When you navigate to Windows\System32\inetsrv\config using explorer you are using a 64bit program to find the file. When you open the file using using notepad++ you are trying to open it using a 32bit program. The confusion occurs because, rather than telling you that this is what you are doing, windows allows you to open the file but when you save it the file's path is transparently mapped to Windows\SysWOW64\inetsrv\Config.
So in practice what happens is you open applicationhost.config using notepad++, make a change, save the file; but rather than overwriting the original you are saving a 32bit copy of it in Windows\SysWOW64\inetsrv\Config, therefore you are not making changes to the version that is actually used by IIS. If you navigate to the Windows\SysWOW64\inetsrv\Config you will find the file you just saved.
How to get around this? Simple - use a 64bit text editor, such as the normal notepad that ships with windows.
"App not installed" shows when an app with same package already installed in same device. just delete your first application which you were using for testing purpose before making it to signed apk. This will work. cheers!
select sysdate from dual
30-MAR-17
select count(1) from masterdata where to_date(inactive_from_date,'DD-MON-YY'
between '01-JAN-16' to '31-DEC-16'
12998 rows
DataRow rw = table.AsEnumerable().FirstOrDefault(tt => tt.Field<string>("Author") == "Name");
if (rw != null)
{
// row exists
}
add to your using clause :
using System.Linq;
and add :
System.Data.DataSetExtensions
to references.
I don't understand what you are doing with the for loop. You are merely iterating over every element and assigning to the first element you encounter. If you're trying to push to a list go with the above answer that states there is no such thing as pushing to a list. That really is getting the data structures mixed up. Javascript might not be setting the best example, because a javascript list is really also a queue and a stack at the same time.
Try starting with the Percona wizard and comparing their recommendations against your current settings one by one. Don't worry there aren't as many applicable settings as you might think.
https://tools.percona.com/wizard
Update circa 2020: Sorry, this tool reached it's end of life: https://www.percona.com/blog/2019/04/22/end-of-life-query-analyzer-and-mysql-configuration-generator/
Everyone points to key_buffer_size
first which you have addressed. With 96GB memory I'd be wary of any tiny default value (likely to be only 96M!).
Yes, excluding anonymous classes, readability and intent declaration it's almost worthless. Are those three things worthless though?
Personally I tend not to use final
for local variables and parameters unless I'm using the variable in an anonymous inner class, but I can certainly see the point of those who want to make it clear that the parameter value itself won't change (even if the object it refers to changes its contents). For those who find that adds to readability, I think it's an entirely reasonable thing to do.
Your point would be more important if anyone were actually claiming that it did keep data constant in a way that it doesn't - but I can't remember seeing any such claims. Are you suggesting there's a significant body of developers suggesting that final
has more effect than it really does?
EDIT: I should really have summed all of this up with a Monty Python reference; the question seems somewhat similar to asking "What have the Romans ever done for us?"
Here is a little more fun. I've found that very often NumPy does exactly what I wish it would do - sometimes it's faster for me to just try things than it is to read the docs. Actually a mixture of both is best.
I think your answer is fine (and it's OK to accept it if you like). This is just "extra".
import numpy as np
a = np.arange(4,10).reshape(2,3)
wh = np.where(a>7)
gt = a>7
x = np.where(gt)
print "wh: ", wh
print "gt: ", gt
print "x: ", x
gives:
wh: (array([1, 1]), array([1, 2]))
gt: [[False False False]
[False True True]]
x: (array([1, 1]), array([1, 2]))
... but:
print "a[wh]: ", a[wh]
print "a[gt] ", a[gt]
print "a[x]: ", a[x]
gives:
a[wh]: [8 9]
a[gt] [8 9]
a[x]: [8 9]
I'm just starting to use EC2 myself so not an expert, but Amazon's own documentation says:
we recommend that you use the local instance store for temporary data and, for data requiring a higher level of durability, we recommend using Amazon EBS volumes or backing up the data to Amazon S3.
Emphasis mine.
I do more data analysis than web hosting, so persistence doesn't matter as much to me as it might for a web site. Given the distinction made by Amazon itself, I wouldn't assume that EBS is right for everyone.
I'll try to remember to weigh in again after I've used both.
It appears that in PHP you are obtaining the value of the submit button, not the select input. If you are using GET you will want to use $_GET['website_string']
or POST would be $_POST['website_string']
.
You will probably want the following HTML:
<select name="website_string">
<option value="" selected="selected"></option>
<option value="abc">ABC</option>
<option value="def">def</option>
<option value="hij">hij</option>
</select>
<input type="submit" />
With some PHP that looks like this:
<?php
$website_string = $_POST['website_string']; // or $_GET['website_string'];
?>
@Martin Devillers solution works fine. For completeness, providing the steps below:
src/main/resource
In pom file, add both wsdlDirectory and wsdlLocation(don't miss / at the beginning of wsdlLocation), like below. While wsdlDirectory is used to generate code and wsdlLocation is used at runtime to create dynamic proxy.
<wsdlDirectory>src/main/resources/mydir</wsdlDirectory>
<wsdlLocation>/mydir/my.wsdl</wsdlLocation>
Then in your java code(with no-arg constructor):
MyPort myPort = new MyPortService().getMyPort();
Here is the full code generation part in pom file, with fluent api in generated code.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxws-maven-plugin</artifactId>
<version>2.5</version>
<dependencies>
<dependency>
<groupId>org.jvnet.jaxb2_commons</groupId>
<artifactId>jaxb2-fluent-api</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.ws</groupId>
<artifactId>jaxws-tools</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>wsdl-to-java-generator</id>
<goals>
<goal>wsimport</goal>
</goals>
<configuration>
<xjcArgs>
<xjcArg>-Xfluent-api</xjcArg>
</xjcArgs>
<keep>true</keep>
<wsdlDirectory>src/main/resources/package</wsdlDirectory>
<wsdlLocation>/package/my.wsdl</wsdlLocation>
<sourceDestDir>${project.build.directory}/generated-sources/annotations/jaxb</sourceDestDir>
<packageName>full.package.here</packageName>
</configuration>
</execution>
</executions>
Just adding this answer in case others are directed here by Google Search as I was.
I used the elevate
module in my Python script and the script executed with Administrator Privileges in Windows 10.
I tend to find that if I'm specifying individual colours in multiple geom's, I'm doing it wrong. Here's how I would plot your data:
##Subset the necessary columns
dd_sub = datos[,c(20, 2,3,5)]
##Then rearrange your data frame
library(reshape2)
dd = melt(dd_sub, id=c("fecha"))
All that's left is a simple ggplot command:
ggplot(dd) + geom_line(aes(x=fecha, y=value, colour=variable)) +
scale_colour_manual(values=c("red","green","blue"))
Example plot
The solution that work for is were add the next dependency to my pom.xml file.
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
I Use simply for my app:
using IWshRuntimeLibrary; // > Ref > COM > Windows Script Host Object
...
private static void CreateShortcut()
{
string link = Environment.GetFolderPath( Environment.SpecialFolder.Desktop )
+ Path.DirectorySeparatorChar + Application.ProductName + ".lnk";
var shell = new WshShell();
var shortcut = shell.CreateShortcut( link ) as IWshShortcut;
shortcut.TargetPath = Application.ExecutablePath;
shortcut.WorkingDirectory = Application.StartupPath;
//shortcut...
shortcut.Save();
}
Very simple one:
$scope.totalPages = new Array(10);
<div id="pagination">
<a ng-repeat="i in totalPages track by $index">
{{$index+1}}
</a>
</div>
You can use the partial function from functools like so.
from functools import partial
def perform(f):
f()
perform(Action1)
perform(partial(Action2, p))
perform(partial(Action3, p, r))
Also works with keywords
perform(partial(Action4, param1=p))
Personally, I think the icons generated by the Google Charts API look great and are easy to customise dynamically.
See my answer on Google Maps API 3 - Custom marker color for default (dot) marker
The simplest way of installing SBT on ubuntu is the deb
package provided by Typesafe.
Run the following shell commands:
wget http://apt.typesafe.com/repo-deb-build-0002.deb
sudo dpkg -i repo-deb-build-0002.deb
sudo apt-get update
sudo apt-get install sbt
And you're done !
This line of code works for me
$("#datepicker").datepicker("option", "dateFormat", "dd/mm/yy");
you can change the id #datepicker with the class .input-group.date of course
function doPoll(){
$.post('ajax/test.html', function(data) {
alert(data); // process results here
setTimeout(doPoll,5000);
});
}
Try the following simple code:
$('input[type=checkbox]').each(function() { this.checked = true; });
Source: How to reset all checkboxes using jQuery or pure JS?
As a quick workaround, and assuming that you are on a bash-like terminal (Linux/OSX), you can try to export the PYTHONPATH environment variable:
export PYTHONPATH="${PYTHONPATH}:/usr/local/lib/python2.7/site-packages:/usr/lib/python2.7/site-packages"
For Python 2.7
use -n
parameter to install like for cocoapods:
sudo gem install cocoapods -n /usr/local/bin
This is so called file local variables, that are understood by Emacs and set correspondingly. See corresponding section in Emacs manual - you can define them either in header or in footer of file
Bill K.'s answer was the most elegant if you just want to start a window at startup or start from a shortcut on the desktop.
Just open the window where you want it, right click and choose properties. select Layout uncheck "let system position window" and click OK.
Window will now open just where you want it. You can set font and window colors at the same time on other tabs. sweet.
so the .animate method works only if you have given a position attribute to an element, if not it didn't move?
for example i've seen that if i declare the div but i declare nothing in the css, it does not assume his default position and it does not move it into the page, even if i declare property margin: x w y z;
Check out git_split project at https://github.com/vangorra/git_split
Turn git directories into their very own repositories in their own location. No subtree funny business. This script will take an existing directory in your git repository and turn that directory into an independent repository of its own. Along the way, it will copy over the entire change history for the directory you provided.
./git_split.sh <src_repo> <src_branch> <relative_dir_path> <dest_repo>
src_repo - The source repo to pull from.
src_branch - The branch of the source repo to pull from. (usually master)
relative_dir_path - Relative path of the directory in the source repo to split.
dest_repo - The repo to push to.
git reset
and git clean
can be overkill in some situations (and be a huge waste of time).
If you simply have a message like "The following untracked files would be overwritten..." and you want the remote/origin/upstream to overwrite those conflicting untracked files, then git checkout -f <branch>
is the best option.
If you're like me, your other option was to clean and perform a --hard reset
then recompile your project.
If you have source as a string like "abcd"
and want to produce a list like this:
{ "a.a" },
{ "b.b" },
{ "c.c" },
{ "d.d" }
then call:
List<string> list = source.Select(c => String.Concat(c, ".", c)).ToList();
Here's what I've been doing:
public void displayError(final String errorText) {
Runnable doDisplayError = new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(), errorText, Toast.LENGTH_LONG).show();
}
};
messageHandler.post(doDisplayError);
}
That should allow the method to be called from either thread.
Where messageHandler is declared in the activity as ..
Handler messageHandler = new Handler();
Add second parameter
You need to pass additional parameter to your function:
function parts($site_url, $part) {
$structure = 'http://' . $site_url . 'content/';
echo $structure . $part . '.php';
}
In case of closures
If you'd rather use closures then you can import variable to the current scope (the use
keyword):
$parts = function($part) use ($site_url) {
$structure = 'http://' . $site_url . 'content/';
echo $structure . $part . '.php';
};
global
- a bad practice
This post is frequently read, so something needs to be clarified about global
. Using it is considered a bad practice (refer to this and this).
For the completeness sake here is the solution using global
:
function parts($part) {
global $site_url;
$structure = 'http://' . $site_url . 'content/';
echo($structure . $part . '.php');
}
It works because you have to tell interpreter that you want to use a global variable, now it thinks it's a local variable (within your function).
Suggested reading:
For what Joel Coehorn suggested, have you already tried the utility named tcping. I know this is something you are not doing programmatically. It is a standalone executable which allows you to ping every specified time interval. It is not in C# though. Also..I am not sure If this would work If the target machine has firewall..hmmm..
[I am kinda new to this site and mistakenly added this as a comment, now added this as an answer. Let me know If this can be done here as I have duplicate comments (as comment and as an answer) here. I can not delete comments here.]
I use GateOne from the synocommunity.
Go into settings in Package Center and add http://packages.synocommunity.com/ as a package source. Then you should be able to add it easily via Package Center.
In addition to the already posted answer, I thought I should share a handy trick I use to load all the DLL functions into the program through function pointers, without writing a separate GetProcAddress call for each and every function. I also like to call the functions directly as attempted in the OP.
Start by defining a generic function pointer type:
typedef int (__stdcall* func_ptr_t)();
What types that are used aren't really important. Now create an array of that type, which corresponds to the amount of functions you have in the DLL:
func_ptr_t func_ptr [DLL_FUNCTIONS_N];
In this array we can store the actual function pointers that point into the DLL memory space.
Next problem is that GetProcAddress
expects the function names as strings. So create a similar array consisting of the function names in the DLL:
const char* DLL_FUNCTION_NAMES [DLL_FUNCTIONS_N] =
{
"dll_add",
"dll_subtract",
"dll_do_stuff",
...
};
Now we can easily call GetProcAddress() in a loop and store each function inside that array:
for(int i=0; i<DLL_FUNCTIONS_N; i++)
{
func_ptr[i] = GetProcAddress(hinst_mydll, DLL_FUNCTION_NAMES[i]);
if(func_ptr[i] == NULL)
{
// error handling, most likely you have to terminate the program here
}
}
If the loop was successful, the only problem we have now is calling the functions. The function pointer typedef from earlier isn't helpful, because each function will have its own signature. This can be solved by creating a struct with all the function types:
typedef struct
{
int (__stdcall* dll_add_ptr)(int, int);
int (__stdcall* dll_subtract_ptr)(int, int);
void (__stdcall* dll_do_stuff_ptr)(something);
...
} functions_struct;
And finally, to connect these to the array from before, create a union:
typedef union
{
functions_struct by_type;
func_ptr_t func_ptr [DLL_FUNCTIONS_N];
} functions_union;
Now you can load all the functions from the DLL with the convenient loop, but call them through the by_type
union member.
But of course, it is a bit burdensome to type out something like
functions.by_type.dll_add_ptr(1, 1);
whenever you want to call a function.
As it turns out, this is the reason why I added the "ptr" postfix to the names: I wanted to keep them different from the actual function names. We can now smooth out the icky struct syntax and get the desired names, by using some macros:
#define dll_add (functions.by_type.dll_add_ptr)
#define dll_subtract (functions.by_type.dll_subtract_ptr)
#define dll_do_stuff (functions.by_type.dll_do_stuff_ptr)
And voilà, you can now use the function names, with the correct type and parameters, as if they were statically linked to your project:
int result = dll_add(1, 1);
Disclaimer: Strictly speaking, conversions between different function pointers are not defined by the C standard and not safe. So formally, what I'm doing here is undefined behavior. However, in the Windows world, function pointers are always of the same size no matter their type and the conversions between them are predictable on any version of Windows I've used.
Also, there might in theory be padding inserted in the union/struct, which would cause everything to fail. However, pointers happen to be of the same size as the alignment requirement in Windows. A static_assert
to ensure that the struct/union has no padding might be in order still.
You can also do:
alist.pop()
It depends on what you want to do with your list because the pop()
method will delete the last element.
https://support.procore.com/faq/what-is-the-difference-between-sp-and-idp-initiated-sso
There is much more to this but this is a high level overview on which is which.
Procore supports both SP- and IdP-initiated SSO:
Identity Provider Initiated (IdP-initiated) SSO. With this option, your end users must log into your Identity Provider's SSO page (e.g., Okta, OneLogin, or Microsoft Azure AD) and then click an icon to log into and open the Procore web application. To configure this solution, see Configure IdP-Initiated SSO for Microsoft Azure AD, Configure Procore for IdP-Initated Okta SSO, or Configure IdP-Initiated SSO for OneLogin. OR Service Provider Initiated (SP-initiated) SSO. Referred to as Procore-initiated SSO, this option gives your end users the ability to sign into the Procore Login page and then sends an authorization request to the Identify Provider (e.g., Okta, OneLogin, or Microsoft Azure AD). Once the IdP authenticates the user's identify, the user is logged into Procore. To configure this solution, see Configure Procore-Initiated SSO for Microsoft Azure Active Directory, Configure Procore-Initiated SSO for Okta, or Configure Procore-Initiated SSO for OneLogin.
As per the above answers, I made some changes and I got the correct output.
Step 1: Under "inf.plist" add the Microphone usage permissions ==>
<key>NSMicrophoneUsageDescription</key>
<string>${PRODUCT_NAME} Microphone Usage</string>
Step 2:
Save record audio file into Local Document Directory
Play/Stop recording
Here is the source code. Please have a look at once and use it.
ViewController.h
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
@interface ViewController : UIViewController{
AVAudioPlayer *audioPlayer;
AVAudioRecorder *audioRecorder;
}
-(IBAction) startRecording;
-(IBAction) stopRecording;
-(IBAction) playRecording;
-(IBAction) stopPlaying;
@end
ViewController.m
#import "ViewController.h"
@interface ViewController () <AVAudioRecorderDelegate, AVAudioPlayerDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
-(IBAction) startRecording{
// Setup audio session
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err)
{
NSLog(@"audioSession: %@ %ld %@", [err domain], (long)[err code], [[err userInfo] description]);
return;
}
[audioSession setActive:YES error:&err];
err = nil;
if(err)
{
NSLog(@"audioSession: %@ %ld %@", [err domain], (long)[err code], [[err userInfo] description]);
return;
}
AVAudioSessionRecordPermission permissionStatus = [audioSession recordPermission];
switch (permissionStatus) {
case AVAudioSessionRecordPermissionUndetermined:{
[[AVAudioSession sharedInstance] requestRecordPermission:^(BOOL granted) {
// CALL YOUR METHOD HERE - as this assumes being called only once from user interacting with permission alert!
if (granted) {
// Microphone enabled code
NSLog(@"Mic permission granted. Call method for granted stuff.");
[self startRecordingAudioSound];
}
else {
// Microphone disabled code
NSLog(@"Mic permission indeterminate. Call method for indeterminate stuff.");
// UIApplication.sharedApplication().openURL(NSURL(string: UIApplicationOpenSettingsURLString)!)
}
}];
break;
}
case AVAudioSessionRecordPermissionDenied:
// direct to settings...
NSLog(@"Mic permission denied. Call method for denied stuff.");
break;
case AVAudioSessionRecordPermissionGranted:
// mic access ok...
NSLog(@"Mic permission granted. Call method for granted stuff.");
[self startRecordingAudioSound];
break;
default:
// this should not happen.. maybe throw an exception.
break;
}
}
#pragma mark - Audio Recording
- (BOOL)startRecordingAudioSound{
NSError *error = nil;
NSMutableDictionary *recorderSettings = [[NSMutableDictionary alloc] init];
[recorderSettings setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[recorderSettings setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recorderSettings setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
[recorderSettings setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[recorderSettings setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recorderSettings setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
// Create a new audio file
NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath_ = [searchPaths objectAtIndex: 0];
NSString *pathToSave = [documentPath_ stringByAppendingPathComponent:[self dateString]];
NSLog(@"the path is %@",pathToSave);
// File URL
NSURL *url = [NSURL fileURLWithPath:pathToSave];//FILEPATH];
//Save recording path to preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setURL:url forKey:@"Test1"];
[prefs synchronize];
audioRecorder = [[AVAudioRecorder alloc] initWithURL:url settings:recorderSettings error:&error];
if (!audioRecorder)
{
NSLog(@"Error establishing recorder: %@", error.localizedFailureReason);
return NO;
}
// Initialize degate, metering, etc.
audioRecorder.delegate = self;
audioRecorder.meteringEnabled = YES;
//self.title = @"0:00";
if (![audioRecorder prepareToRecord])
{
NSLog(@"Error: Prepare to record failed");
//[self say:@"Error while preparing recording"];
return NO;
}
if (![audioRecorder record])
{
NSLog(@"Error: Record failed");
// [self say:@"Error while attempting to record audio"];
return NO;
}
NSLog(@"Recroding Started");
return YES;
}
#pragma mark - AVAudioRecorderDelegate
- (void) audioRecorderDidFinishRecording:(AVAudioRecorder *)avrecorder successfully:(BOOL)flag{
NSLog (@"audioRecorderDidFinishRecording:successfully:");
}
#pragma mark - AVAudioPlayerDelegate
- (void) audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
NSLog (@"audioPlayerDidFinishPlaying:successfully:");
}
- (NSString *) dateString {
// return a formatted string for a file name
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"ddMMMYY_hhmmssa";
return [[formatter stringFromDate:[NSDate date]]stringByAppendingString:@".aif"];
}
-(IBAction) stopRecording{
NSLog(@"stopRecording");
[audioRecorder stop];
NSLog(@"stopped");
}
-(IBAction) playRecording{
//Load recording path from preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSURL *temporaryRecFile = [prefs URLForKey:@"Test1"];
//Get Duration of Audio File
AVURLAsset* audioAsset = [AVURLAsset URLAssetWithURL:temporaryRecFile options:nil];
CMTime audioDuration = audioAsset.duration;
float audioDurationSeconds = CMTimeGetSeconds(audioDuration);
NSLog(@"Duration Of Audio: %f", audioDurationSeconds);
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:temporaryRecFile error:nil];
audioPlayer.delegate = self;
[audioPlayer setNumberOfLoops:0];
audioPlayer.volume = 1;
[audioPlayer prepareToPlay];
[audioPlayer play];
NSLog(@"playing");
}
-(IBAction) stopPlaying{
NSLog(@"stopPlaying");
[audioPlayer stop];
NSLog(@"stopped");
}
@end
You can't update two tables at once, but you can link an update into an insert using OUTPUT INTO
, and you can use this output as a join for the second update:
DECLARE @ids TABLE (id int);
BEGIN TRANSACTION
UPDATE Table1
SET Table1.LastName = 'DR. XXXXXX'
OUTPUT INSERTED.id INTO @ids
WHERE Table1.field = '010008';
UPDATE Table2
SET Table2.WAprrs = 'start,stop'
FROM Table2
JOIN @ids i on i.id = Table2.id;
COMMIT;
I changed your example WHERE
condition to be some other field than id
. If it's id
the you don't need this fancy OUTPUT
, you can just UPDATE
the second table for the same id='010008'
.
Answer:
c
is the only valid hex character in chucknorris, the value turns into: c00c00000000
(0 for all values that were invalid). Red = c00c
, Green = 0000
, Blue = 0000
.c00000
which is a brick-reddish toned color.Like this?
In LINQ:
var sortedList = originalList.OrderBy(foo => !foo.AVC)
.ToList();
Or in-place:
originalList.Sort((foo1, foo2) => foo2.AVC.CompareTo(foo1.AVC));
As Jon Skeet says, the trick here is knowing that false
is considered to be 'smaller' than true.
If you find that you are doing these ordering operations in lots of different places in your code, you might want to get your type Foo
to implement the IComparable<Foo>
and IComparable
interfaces.
There is also this way of specifying the viewmodel:
using Wpf = System.Windows;
public partial class App : Wpf.Application //your skeleton app already has this.
{
protected override void OnStartup( Wpf.StartupEventArgs e ) //you need to add this.
{
base.OnStartup( e );
MainWindow = new MainView();
MainWindow.DataContext = new MainViewModel( e.Args );
MainWindow.Show();
}
}
<Rant>
All of the solutions previously proposed require that MainViewModel
must have a parameterless constructor.
Microsoft is under the impression that systems can be built using parameterless constructors. If you are also under that impression, go ahead and use some of the other solutions.
For those that know that constructors must have parameters, and therefore the instantiation of objects cannot be left in the hands of magic frameworks, the proper way of specifying the viewmodel is the one I showed above.
</Rant>
package main
import "fmt"
import "strconv"
func FloatToString(input_num float64) string {
// to convert a float number to a string
return strconv.FormatFloat(input_num, 'f', 6, 64)
}
func main() {
fmt.Println(FloatToString(21312421.213123))
}
If you just want as many digits precision as possible, then the special precision -1 uses the smallest number of digits necessary such that ParseFloat will return f exactly. Eg
strconv.FormatFloat(input_num, 'f', -1, 64)
Personally I find fmt
easier to use. (Playground link)
fmt.Printf("x = %.6f\n", 21312421.213123)
Or if you just want to convert the string
fmt.Sprintf("%.6f", 21312421.213123)
The following methods can be used to solve your problem:
CSS alpha transparency method (doesn't work in Internet Explorer 8):
#div{background-color:rgba(255,0,0,0.5);}
Use a transparent PNG image according to your choice as background.
Use the following CSS code snippet to create a cross-browser alpha-transparent background. Here is an example with #000000
@ 0.4% opacity
.div {
background:rgb(0,0,0);
background: transparent\9;
background:rgba(0,0,0,0.4);
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000,endColorstr=#66000000);
zoom: 1;
}
.div:nth-child(n) {
filter: none;
}
For more details regarding this technique, see this, which has an online CSS generator.
Could you please try this ?
Create another item in post such as post.link then assign the link to it before send post to the render function.
post.link = '/posts/+ id.toString();
So, the above render function should be following instead.
return <li key={post.id}><a href={post.link}>{post.title}</a></li>
Use:
from operator import itemgetter
from heapq import nlargest
result = nlargest(N, enumerate(your_list), itemgetter(1))
Now the result
list would contain N tuples (index
, value
) where value
is maximized.
Named pipes and sockets are not functionally equivalent; sockets provide more features (they are bidirectional, for a start).
We cannot tell you which will perform better, but I strongly suspect it doesn't matter.
Unix domain sockets will do pretty much what tcp sockets will, but only on the local machine and with (perhaps a bit) lower overhead.
If a Unix socket isn't fast enough and you're transferring a lot of data, consider using shared memory between your client and server (which is a LOT more complicated to set up).
Unix and NT both have "Named pipes" but they are totally different in feature set.
var string = string.split(",");
Windows Firewall could cause this exception, try to disable it or add a rule for port or even program (java)
http://tylenoly.wordpress.com/2010/10/27/how-to-finish-activity-with-results/
With a slight modification for "param_result"
/* Start Activity */
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setClassName("com.thinoo.ActivityTest", "com.thinoo.ActivityTest.NewActivity");
startActivityForResult(intent,90);
}
/* Called when the second activity's finished */
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode) {
case 90:
if (resultCode == RESULT_OK) {
Bundle res = data.getExtras();
String result = res.getString("param_result");
Log.d("FIRST", "result:"+result);
}
break;
}
}
private void finishWithResult()
{
Bundle conData = new Bundle();
conData.putString("param_result", "Thanks Thanks");
Intent intent = new Intent();
intent.putExtras(conData);
setResult(RESULT_OK, intent);
finish();
}
It basically depends on which version jersey you are using. If you are using Jersey ver.1.X.X you need to add
Jersey 1 uses "com.sun.jersey", and Jersey 2 uses org.glassfish. on servlet class tag. Also, note that also init-param starting with com.sun.jersey won't be recognized by Jersey 2.
And Add all the jar file into WEB-INF lib folder
In Django, MVC structure is as Chris Pratt said, different from classical MVC model used in other frameworks, I think the main reason for doing this is avoiding a too strict application structure, like happens in others MVC frameworks like CakePHP.
In Django, MVC was implemented in the following way:
View layer is splitted in two. The views should be used only to manage HTTP requests, they are called and respond to them. Views communicate with the rest of your application (forms, modelforms, custom classes, of in simple cases directly with models). To create the interface we use Templates. Templates are string-like to Django, it maps a context into them, and this context was communicated to the view by the application (when view asks).
Model layer gives encapsulation, abstraction, validation, intelligence and makes your data object-oriented (they say someday DBMS will also). This doesn't means that you should make huge models.py files (in fact a very good advice is to split your models in different files, put them into a folder called 'models', make an '__init__.py' file into this folder where you import all your models and finally use the attribute 'app_label' of models.Model class). Model should abstract you from operating with data, it will make your application simpler. You should also, if required, create external classes, like "tools" for your models.You can also use heritage in models, setting the 'abstract' attribute of your model's Meta class to 'True'.
Where is the rest? Well, small web applications generally are a sort of an interface to data, in some small program cases using views to query or insert data would be enough. More common cases will use Forms or ModelForms, which are actually "controllers". This is not other than a practical solution to a common problem, and a very fast one. It's what a website use to do.
If Forms are not enogh for you, then you should create your own classes to do the magic, a very good example of this is admin application: you can read ModelAmin code, this actually works as a controller. There is not a standard structure, I suggest you to examine existing Django apps, it depends on each case. This is what Django developers intended, you can add xml parser class, an API connector class, add Celery for performing tasks, twisted for a reactor-based application, use only the ORM, make a web service, modify the admin application and more... It's your responsability to make good quality code, respect MVC philosophy or not, make it module based and creating your own abstraction layers. It's very flexible.
My advice: read as much code as you can, there are lots of django applications around, but don't take them so seriously. Each case is different, patterns and theory helps, but not always, this is an imprecise cience, django just provide you good tools that you can use to aliviate some pains (like admin interface, web form validation, i18n, observer pattern implementation, all the previously mentioned and others), but good designs come from experienced designers.
PS.: use 'User' class from auth application (from standard django), you can make for example user profiles, or at least read its code, it will be useful for your case.
The following supposedly gets you CPU and RAM. See ManagementFactory for more details.
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
private static void printUsage() {
OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
for (Method method : operatingSystemMXBean.getClass().getDeclaredMethods()) {
method.setAccessible(true);
if (method.getName().startsWith("get")
&& Modifier.isPublic(method.getModifiers())) {
Object value;
try {
value = method.invoke(operatingSystemMXBean);
} catch (Exception e) {
value = e;
} // try
System.out.println(method.getName() + " = " + value);
} // if
} // for
}
This will match one or more alphabetical characters:
/^[a-z]+$/
You can make it case insensitive using:
/^[a-z]+$/i
or:
/^[a-zA-Z]+$/
Or you can try to add in local name resolution (hosts
file found in the directory etc
in most operating systems, details differ) something like this:
192.168.1.1 Linksys
and next
var req = https.request({
host: 'Linksys',
port: 443,
path: '/',
method: 'GET'
...
will work.
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
String dateInString = "07/06/2013";
try {
Date date = formatter.parse(dateInString);
System.out.println(date);
System.out.println(formatter.format(date));
} catch (ParseException e) {
e.printStackTrace();
}
Output:
2014/08/06 16:06:54
2014/08/06 16:06:54
Above two answers are correct but didn't work for me.
docker container ls
docker container ls -a
and after that it showed all the process previously exited and running.docker stop <container id>
or docker container stop <container id>
didn't work docker rm -f <container id>
and it worked.docker container ls -a
and this process wasn't present./**
* @expectedException Exception
* @expectedExceptionMessage Amount has to be bigger then 0!
*/
public function testDepositNegative()
{
$this->account->deposit(-7);
}
Be very carefull about "/**"
, notice the double "*". Writing only "**"(asterix) will fail your code.
Also make sure your using last version of phpUnit. In some earlier versions of phpunit @expectedException Exception is not supported. I had 4.0 and it didn't work for me, I had to update to 5.5 https://coderwall.com/p/mklvdw/install-phpunit-with-composer to update with composer.
Here is some code I use that works with Angular 7
(Note: In the past I sometimes used info provided by the answer of Anthony Brenelière, which I appreciate. But, at least for Angular 7, this part:
[checked]="model.options==2"
I found to be unnecessary.)
My solution here has three advantages:
Example HTML:
<input type="radio" id="byAllRadioButton"
name="findByRadioButtonGroup"
[(ngModel)]="findByRadioButtonGroup.dataBindingValue"
[value]="byAllRadioButton.MY_DATA_BINDING_VALUE">
<input type="radio" id="byNameRadioButton"
name="findByRadioButtonGroup"
[(ngModel)]="findByRadioButtonGroup.dataBindingValue"
[value]="byNameRadioButton.MY_DATA_BINDING_VALUE">
Example TypeScript:
findByRadioButtonGroup : UIRadioButtonGroupModel
= new UIRadioButtonGroupModel("findByRadioButtonGroup",
"byAllRadioButton_value",
(groupValue : any) => this.handleCriteriaRadioButtonChange(groupValue)
);
byAllRadioButton : UIRadioButtonControlModel
= new UIRadioButtonControlModel("byAllRadioButton",
"byAllRadioButton_value",
this.findByRadioButtonGroup) ;
byNameRadioButton : UIRadioButtonControlModel
= new UIRadioButtonControlModel("byNameRadioButton",
"byNameRadioButton_value",
this.findByRadioButtonGroup) ;
private handleCriteriaRadioButtonChange = (groupValue : any) : void => {
if ( this.byAllRadioButton.selected ) {
// Do something
} else if ( this.byNameRadioButton.selected ) {
// Do something
} else {
throw new Error("No expected radio button selected");
}
};
Two classes are used:
Radio Button Group Class:
export class UIRadioButtonGroupModel {
private _dataBindingValue : any;
constructor(private readonly debugName : string,
private readonly initialDataBindingValue : any = null, // Can be null or unspecified
private readonly notifyOfChangeHandler : Function = null // Can be null or unspecified
) {
this._dataBindingValue = initialDataBindingValue;
}
public get dataBindingValue() : any {
return this._dataBindingValue;
}
public set dataBindingValue(val : any) {
this._dataBindingValue = val;
if (this.notifyOfChangeHandler != null) {
MyAngularUtils.callLater(this.notifyOfChangeHandler, this._dataBindingValue);
}
}
public unselectRadioButton(valueOfOneRadioButton : any) {
//
// Warning: This method probably never or almost never should be needed.
// Setting the selected radio button to unselected probably should be avoided, since
// the result will be that no radio button will be selected. That is
// typically not how radio buttons work. But we allow it here.
// Be careful in its use.
//
if (valueOfOneRadioButton == this._dataBindingValue) {
console.warn("Setting radio button group value to null");
this.dataBindingValue = null;
}
}
};
Radio Button Class
export class UIRadioButtonControlModel {
public enabled : boolean = true;
public visible : boolean = true;
constructor(public readonly debugName : string,
public readonly MY_DATA_BINDING_VALUE : any,
private readonly group : UIRadioButtonGroupModel,
) {
}
public get selected() : boolean {
return (this.group.dataBindingValue == this.MY_DATA_BINDING_VALUE);
}
public set selected(doSelectMe : boolean) {
if (doSelectMe) {
this.group.dataBindingValue = this.MY_DATA_BINDING_VALUE;
} else {
this.group.unselectRadioButton(this.MY_DATA_BINDING_VALUE);
}
}
}
It makes a duplicate copy of the string passed in by running a malloc and strcpy of the string passed in. The malloc'ed buffer is returned to the caller, hence the need to run free on the return value.
For debug/release flags, see the CMAKE_BUILD_TYPE
variable (you pass it as cmake -DCMAKE_BUILD_TYPE=value
). It takes values like Release
, Debug
, etc.
https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/Useful-Variables#compilers-and-tools
cmake uses the extension to choose the compiler, so just name your files .c.
You can override this with various settings:
For example:
set_source_files_properties(yourfile.c LANGUAGE CXX)
Would compile .c files with g++. The link above also shows how to select a specific compiler for C/C++.
Add new column to Table
ALTER TABLE [table]
ADD Column1 Datatype
E.g
ALTER TABLE [test]
ADD ID Int
If User wants to make it auto incremented then
ALTER TABLE [test]
ADD ID Int IDENTITY(1,1) NOT NULL
You better use CSS for that, after all, this is what CSS is for. If you don't want to do that, go with Dorwand's answer.
An easier way that works regardless of the OS is to do
git rm -r --cached .
git add .
git commit -m "Drop files from .gitignore"
You basically remove and re-add all files, but git add
will ignore the ones in .gitignore
.
Using the --cached
option will keep files in your filesystem, so you won't be removing files from your disk.
Note:
Some pointed out in the comments that you will lose the history of all your files. I tested this with git 2.27.0 on MacOS and it is not the case. If you want to check what is happening, check your git diff HEAD~1
before you push your commit.
You can use:
IF "%~1" == "" GOTO MyLabel
to strip the outer set of quotes. In general, this is a more reliable method than using square brackets because it will work even if the variable has spaces in it.
You need to use:
await client.PostAsync(uri, content);
Something like that:
var comment = "hello world";
var questionId = 1;
var formContent = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("comment", comment),
new KeyValuePair<string, string>("questionId", questionId)
});
var myHttpClient = new HttpClient();
var response = await myHttpClient.PostAsync(uri.ToString(), formContent);
And if you need to get the response after post, you should use:
var stringContent = await response.Content.ReadAsStringAsync();
Hope it helps ;)
Following Felix Klings advice I tried it out in my chrome browser.
console.dir([1,2])
gives the following output:
Array[2]
0: 1
1: 2
length: 2
__proto__: Array[0]
While console.log([1,2])
gives the following output:
[1, 2]
So I believe console.dir()
should be used to get more information like prototype etc in arrays and objects.
Here is a method that works well and allows you to convert the file to a certain format as well (to avoid "cannot write mode P as JPEG" error):
import urllib2
from django.core.files.base import ContentFile
from PIL import Image
from StringIO import StringIO
def download_image(name, image, url):
input_file = StringIO(urllib2.urlopen(url).read())
output_file = StringIO()
img = Image.open(input_file)
if img.mode != "RGB":
img = img.convert("RGB")
img.save(output_file, "JPEG")
image.save(name+".jpg", ContentFile(output_file.getvalue()), save=False)
where image is the django ImageField or your_model_instance.image here is a usage example:
p = ProfilePhoto(user=user)
download_image(str(user.id), p.image, image_url)
p.save()
Hope this helps
Try setting this before you print:
setvbuf (stdout, NULL, _IONBF, 0);
Gradient descent algorithm uses the constant learning rate which you can provide in during the initialization. You can pass various learning rates in a way showed by Mrry.
But instead of it you can also use more advanced optimizers which have faster convergence rate and adapts to the situation.
Here is a brief explanation based on my understanding:
Adam or adaptive momentum is an algorithm similar to AdaDelta. But in addition to storing learning rates for each of the parameters it also stores momentum changes for each of them separately
Enumerable.Repeat(true, 1000000).ToArray();
if the options are static, you could listen for the change event on your select box and add padding for each individual item
$('#id').change(function() {
var select = $('#id');
var val = $(this).val();
switch(val) {
case 'ValOne':
select.css('padding-left', '30px');
break;
case 'ValTwoLonger':
select.css('padding-left', '20px');
break;
default:
return;
}
});
This is now trivial in tidyr with replace_na(). The function appears to work for data.tables as well as data.frames:
tidyr::replace_na(x, list(a=0, b=0))
This is the only one right answer on this whole page as people answered about "Visual Studio", not "Visual Studio Code":
To change color theme in "Visual Studio Code", use:
File -> Preferences -> Color Theme -> select any color theme you like
You can also download other custom themes as extensions. To do that, open extensions tab on sidebar and type "theme" into the search field to filter extensions only to themes related ones. Click any you like, click "download" and then "install". After installation and restarting VSC, you can find newly installed themes next to default themes in the same place:
File -> Preferences -> Color Theme -> select newly downloaded color theme
PS - Microsoft made bad naming decision by calling this new editor Visual Studio Code, it's terrible how many wrong links we have in google and stackoverflow. They should rename it to VSCode or something.
How about validating dates in "ANY" date format? I've been using the DateJS library and adding it to existing forms to ensure that I get valid dates & times formatted the way that I want. The user can even enter things like "now" and "tomorrow" and it will be converted into a valid date.
Here's the dateJS library: http://www.datejs.com/
and here's a jQuery tip that I wrote: http://www.ssmedia.com/utilities/jquery/index.cfm/datejs.htm
<v-layout justify-center>
<v-card-actions>
<v-btn primary>
<span>SignUp</span>
</v-btn>`enter code here`
</v-card-actions>
</v-layout>
Here's a utility class I use to convert the newer java.time
classes to java.util.Date
objects and vice versa:
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
public class DateUtils {
public static Date asDate(LocalDate localDate) {
return Date.from(localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant());
}
public static Date asDate(LocalDateTime localDateTime) {
return Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());
}
public static LocalDate asLocalDate(Date date) {
return Instant.ofEpochMilli(date.getTime()).atZone(ZoneId.systemDefault()).toLocalDate();
}
public static LocalDateTime asLocalDateTime(Date date) {
return Instant.ofEpochMilli(date.getTime()).atZone(ZoneId.systemDefault()).toLocalDateTime();
}
}
Edited based on @Oliv comment.
on Android Studio 4.0 and above, you will get an option readily on the IDE,a green run icon to run the related main() class.
In your scenario, you can have a look at asp.net membership, it is good practice to store user's password as hashed string in the database. you can authenticate the user by comparing the hashed incoming password with the one stored in the database.
Everything has been built for this purposes, check out asp.net membership
Using something like selection.node().getBBox()
you get values like
{
height: 5,
width: 5,
y: 50,
x: 20
}
Use selection.node().getBoundingClientRect()
Use numpy.dot
or a.dot(b)
. See the documentation here.
>>> a = np.array([[ 5, 1 ,3],
[ 1, 1 ,1],
[ 1, 2 ,1]])
>>> b = np.array([1, 2, 3])
>>> print a.dot(b)
array([16, 6, 8])
This occurs because numpy arrays are not matrices, and the standard operations *, +, -, /
work element-wise on arrays. Instead, you could try using numpy.matrix
, and *
will be treated like matrix multiplication.
Also know there are other options:
As noted below, if using python3.5+ the @
operator works as you'd expect:
>>> print(a @ b)
array([16, 6, 8])
If you want overkill, you can use numpy.einsum
. The documentation will give you a flavor for how it works, but honestly, I didn't fully understand how to use it until reading this answer and just playing around with it on my own.
>>> np.einsum('ji,i->j', a, b)
array([16, 6, 8])
As of mid 2016 (numpy 1.10.1), you can try the experimental numpy.matmul
, which works like numpy.dot
with two major exceptions: no scalar multiplication but it works with stacks of matrices.
>>> np.matmul(a, b)
array([16, 6, 8])
numpy.inner
functions the same way as numpy.dot
for matrix-vector multiplication but behaves differently for matrix-matrix and tensor multiplication (see Wikipedia regarding the differences between the inner product and dot product in general or see this SO answer regarding numpy's implementations).
>>> np.inner(a, b)
array([16, 6, 8])
# Beware using for matrix-matrix multiplication though!
>>> b = a.T
>>> np.dot(a, b)
array([[35, 9, 10],
[ 9, 3, 4],
[10, 4, 6]])
>>> np.inner(a, b)
array([[29, 12, 19],
[ 7, 4, 5],
[ 8, 5, 6]])
If you have tensors (arrays of dimension greater than or equal to one), you can use numpy.tensordot
with the optional argument axes=1
:
>>> np.tensordot(a, b, axes=1)
array([16, 6, 8])
Don't use numpy.vdot
if you have a matrix of complex numbers, as the matrix will be flattened to a 1D array, then it will try to find the complex conjugate dot product between your flattened matrix and vector (which will fail due to a size mismatch n*m
vs n
).
For the first non-paste()
answer, we can look at stringr::str_c()
(and then toString()
below). It hasn't been around as long as this question, so I think it's useful to mention that it also exists.
Very simple to use, as you can see.
tmp <- cbind("GAD", "AB")
library(stringr)
str_c(tmp, collapse = ",")
# [1] "GAD,AB"
From its documentation file description, it fits this problem nicely.
To understand how str_c works, you need to imagine that you are building up a matrix of strings. Each input argument forms a column, and is expanded to the length of the longest argument, using the usual recyling rules. The sep string is inserted between each column. If collapse is NULL each row is collapsed into a single string. If non-NULL that string is inserted at the end of each row, and the entire matrix collapsed to a single string.
Added 4/13/2016: It's not exactly the same as your desired output (extra space), but no one has mentioned it either. toString()
is basically a version of paste()
with collapse = ", "
hard-coded, so you can do
toString(tmp)
# [1] "GAD, AB"
You are getting something wrong... RTSP is a realtime streaming protocol. Meaning, you can stream whatever you want in real time. So you can use it to stream LIVE content (no matter what it is, video, audio, text, presentation...). RTP is a transport protocol which is used to transport media data which is negotiated over RTSP.
You use RTSP to control media transmission over RTP. You use it to setup, play, pause, teardown the stream...
So, if you want your server to just start streaming when the URL is requested, you can implement some sort of RTP-only server. But if you want more control and if you are streaming live video, you must use RTSP, because it transmits SDP and other important decoding data.
Read the documents I linked here, they are a good starting point.
find
already looks recursively by default:
[15:21:53 ~]$ mkdir foo
[15:22:28 ~]$ cd foo
[15:22:31 ~/foo]$ mkdir bar
[15:22:35 ~/foo]$ cd bar
[15:22:36 ~/foo/bar]$ ln -s ../foo abc
[15:22:40 ~/foo/bar]$ cd ..
[15:22:47 ~/foo]$ ln -s foo abc
[15:22:52 ~/foo]$ find ./ -type l
.//abc
.//bar/abc
[15:22:57 ~/foo]$
Simplest Definition of Looper & Handler:
Looper is a class that turns a thread into a Pipeline Thread and Handler gives you a mechanism to push tasks into it from any other threads.
Details in general wording:
So a PipeLine Thread is a thread which can accept more tasks from other threads through a Handler.
The Looper is named so because it implements the loop – takes the next task, executes it, then takes the next one and so on. The Handler is called a handler because it is used to handle or accept that next task each time from any other thread and pass to Looper (Thread or PipeLine Thread).
Example:
A Looper and Handler or PipeLine Thread's very perfect example is to download more than one images or upload them to a server (Http) one by one in a single thread instead of starting a new Thread for each network call in the background.
Read more here about Looper and Handler and the definition of Pipeline Thread:
Cygwin has fully featured fork() on Windows. Thus if using Cygwin is acceptable for you, then the problem is solved in the case performance is not an issue.
Otherwise you can take a look at how Cygwin implements fork(). From a quite old Cygwin's architecture doc:
5.6. Process Creation The fork call in Cygwin is particularly interesting because it does not map well on top of the Win32 API. This makes it very difficult to implement correctly. Currently, the Cygwin fork is a non-copy-on-write implementation similar to what was present in early flavors of UNIX.
The first thing that happens when a parent process forks a child process is that the parent initializes a space in the Cygwin process table for the child. It then creates a suspended child process using the Win32 CreateProcess call. Next, the parent process calls setjmp to save its own context and sets a pointer to this in a Cygwin shared memory area (shared among all Cygwin tasks). It then fills in the child's .data and .bss sections by copying from its own address space into the suspended child's address space. After the child's address space is initialized, the child is run while the parent waits on a mutex. The child discovers it has been forked and longjumps using the saved jump buffer. The child then sets the mutex the parent is waiting on and blocks on another mutex. This is the signal for the parent to copy its stack and heap into the child, after which it releases the mutex the child is waiting on and returns from the fork call. Finally, the child wakes from blocking on the last mutex, recreates any memory-mapped areas passed to it via the shared area, and returns from fork itself.
While we have some ideas as to how to speed up our fork implementation by reducing the number of context switches between the parent and child process, fork will almost certainly always be inefficient under Win32. Fortunately, in most circumstances the spawn family of calls provided by Cygwin can be substituted for a fork/exec pair with only a little effort. These calls map cleanly on top of the Win32 API. As a result, they are much more efficient. Changing the compiler's driver program to call spawn instead of fork was a trivial change and increased compilation speeds by twenty to thirty percent in our tests.
However, spawn and exec present their own set of difficulties. Because there is no way to do an actual exec under Win32, Cygwin has to invent its own Process IDs (PIDs). As a result, when a process performs multiple exec calls, there will be multiple Windows PIDs associated with a single Cygwin PID. In some cases, stubs of each of these Win32 processes may linger, waiting for their exec'd Cygwin process to exit.
Sounds like a lot of work, doesn't it? And yes, it is slooooow.
EDIT: the doc is outdated, please see this excellent answer for an update
As mentioned before, filesaver is a great package to work with files on the client side. But, it is not do well with large files. StreamSaver.js is an alternative solution (which is pointed in FileServer.js) that can handle large files:
const fileStream = streamSaver.createWriteStream('filename.txt', size);
const writer = fileStream.getWriter();
for(var i = 0; i < 100; i++){
var uint8array = new TextEncoder("utf-8").encode("Plain Text");
writer.write(uint8array);
}
writer.close()
You can read here about the behaviour of attributes in many different browsers, including IE.
element.setAttribute()
should do the trick, even in IE. Did you try it? If it doesn't work, then maybe
element.attributeName = 'value'
might work.
I came up with a utility and hosted on GitHub to clean old versions of libraries in the local Maven repository. The utility, on its default execution removes all older versions of artifacts leaving only the latest ones. Optionally, it can remove all snapshots, sources, javadocs, and also groups or artifacts can be forced / excluded in this process. This cross platform also supports date based removal based on last access / download dates.
You're "setting" the value of that variable/attribute. Not overriding or overloading it. Your code is very, very common and normal.
All of these terms ("set", "override", "overload") have specific meanings. Override and Overload are about polymorphism (subclassing).
From http://en.wikipedia.org/wiki/Object-oriented_programming :
Polymorphism allows the programmer to treat derived class members just like their parent class' members. More precisely, Polymorphism in object-oriented programming is the ability of objects belonging to different data types to respond to method calls of methods of the same name, each one according to an appropriate type-specific behavior. One method, or an operator such as +, -, or *, can be abstractly applied in many different situations. If a Dog is commanded to speak(), this may elicit a bark(). However, if a Pig is commanded to speak(), this may elicit an oink(). They both inherit speak() from Animal, but their derived class methods override the methods of the parent class; this is Overriding Polymorphism. Overloading Polymorphism is the use of one method signature, or one operator such as "+", to perform several different functions depending on the implementation. The "+" operator, for example, may be used to perform integer addition, float addition, list concatenation, or string concatenation. Any two subclasses of Number, such as Integer and Double, are expected to add together properly in an OOP language. The language must therefore overload the addition operator, "+", to work this way. This helps improve code readability. How this is implemented varies from language to language, but most OOP languages support at least some level of overloading polymorphism.
This timer will fire a "Hello" alertbox after 30 seconds. However, everytime you click the reset timer button it clears the timerHandle then re-sets it again. Once it's fired, the game ends.
<script type="text/javascript">
var timerHandle = setTimeout("alert('Hello')",3000);
function resetTimer() {
window.clearTimeout(timerHandle);
timerHandle = setTimeout("alert('Hello')",3000);
}
</script>
<body>
<button onclick="resetTimer()">Reset Timer</button>
</body>
Building on the accepted answer.
If the Object has properties you want to call say .properties() try!
var keys = Object.keys(myJSONObject);
for (var j=0; j < keys.length; j++) {
Object[keys[j]].properties();
}
Year(Date)
Year()
: Returns the year portion of the date argument.
Date
: Current date only.
Explanation of both of these functions from here.
You can just use
explorer "https://google.com"
Which will launch your default browser and navigate to that site.
And on Mac I've using
open "https://google.com"
I ran into this same issue and none of what I was seeing here was working. If you are listing your Component in the app-routing.module issue you may have run into the same problem I was having.
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { NavbarComponent } from './navbar/navbar.component';
import { TopbarComponent } from './topbar/topbar.component';
import { FooterbarComponent } from './footerbar/footerbar.component';
import { MRDBGlobalConstants } from './shared/mrdb.global.constants';
import {AppRoutingModule} from './app.routing';
import {HomeModule} from './Home/home.module';
// import HomeComponent here
@NgModule({
declarations: [
AppComponent,
FooterbarComponent,
TopbarComponent,
NavbarComponent,
// add HomeComponent here
],
imports: [
BrowserModule,
HttpModule,
AppRoutingModule,
HomeModule // remove this
],
providers: [MRDBGlobalConstants],
bootstrap: [AppComponent]
})
export class AppModule { }
home/index.ts
export * from './';
app-routing.module.ts
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { HomeComponent } from './components';
const routes: Routes = [
{ path: 'app/home', component: HomeComponent },
{ path: '', redirectTo: 'app/home', pathMatch: 'full' },
{ path: '**', redirectTo: 'app/home' }
];
@NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule]
})
export class AppRoutingModule { }
home/home.module.ts
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
// import { HomeComponent } from './home.component'; This would cause app to break
import { HomeComponent } from './';
@NgModule({
imports: [
CommonModule
],
exports: [HomeComponent],
declarations: [HomeComponent]
})
export class HomeModule { }
I won't claim to understand exactly why this is the case, but when using indexing to export components (and I would assume the same for services, etc.), when referencing the same component in separate modules you need to import them from the same file, in this case the index, in order to avoid this issue.
"From ArrayBuffer to Buffer" could be done this way:
var buffer = Buffer.from( new Uint8Array(ab) );
yes datediff is implemented; see: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF
By the way I found this by Google-searching "hive datediff", it was the first result ;)
find all tabs and replaced by 4 spaces in notepad ++ .It worked.
Using Node.removeChild() does the job for you, simply use something like this:
var leftSection = document.getElementById('left-section');
leftSection.parentNode.removeChild(leftSection);
In DOM 4, the remove method applied, but there is a poor browser support according to W3C:
The method node.remove() is implemented in the DOM 4 specification. But because of poor browser support, you should not use it.
But you can use remove method if you using jQuery...
$('#left-section').remove(); //using remove method in jQuery
Also in new frameworks like you can use conditions to remove an element, for example *ngIf
in Angular and in React, rendering different views, depends on the conditions...
this won't make the taskbar button flash in changing colours, but the title will blink on and off until they move the mouse. This should work cross platform, and even if they just have it in a different tab.
newExcitingAlerts = (function () {
var oldTitle = document.title;
var msg = "New!";
var timeoutId;
var blink = function() { document.title = document.title == msg ? ' ' : msg; };
var clear = function() {
clearInterval(timeoutId);
document.title = oldTitle;
window.onmousemove = null;
timeoutId = null;
};
return function () {
if (!timeoutId) {
timeoutId = setInterval(blink, 1000);
window.onmousemove = clear;
}
};
}());
Update: You may want to look at using HTML5 notifications.
So, youtube gives out the iframe tag as follows:
<iframe width="560" height="315" src="https://www.youtube.com/embed/2EIeUlvHAiM" frameborder="0" allowfullscreen></iframe>
In my case, i just changed it to width="100%" and left the rest as is. It's not the most elegant solution (after all, in different devices you'll get weird ratios) But the video itself does not get deformed, just the frame.
For Linux the correct command is:
gcc -o term term.c -lpthread
The length of the array is 7, the NUL character \0
still counts as a character and the string is still terminated with an implicit \0
See this link to see a working example
Note that had you declared str
as char str[6]= "Hello\0";
the length would be 6 because the implicit NUL is only added if it can fit (which it can't in this example.)
§ 6.7.8/p14
An array of character type may be initialized by a character string literal, optionally enclosed in braces. Sucessive characters of the character string literal (including the terminating null character if there is room or if the array is of unknown size) initialize the elements of the array.
char str[] = "Hello\0"; /* sizeof == 7, Explicit + Implicit NUL */
char str[5]= "Hello\0"; /* sizeof == 5, str is "Hello" with no NUL (no longer a C-string, just an array of char). This may trigger compiler warning */
char str[6]= "Hello\0"; /* sizeof == 6, Explicit NUL only */
char str[7]= "Hello\0"; /* sizeof == 7, Explicit + Implicit NUL */
char str[8]= "Hello\0"; /* sizeof == 8, Explicit + two Implicit NUL */
One more thing to make sure you have is the following set in your web.config:
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
Using this CSS for my current site. It works perfect!
#sides{
margin:0;
}
#left{
float:left;
width:75%;
overflow:hidden;
}
#right{
float:left;
width:25%;
overflow:hidden;
}
The equivalent C code looks like this:
#include <stdio.h>
#include <string.h>
// This code outputs: h is in "This is my test string"
int main(int argc, char* argv[])
{
const char *invalid_characters = "hz";
char *mystring = "This is my test string";
char *c = mystring;
while (*c)
{
if (strchr(invalid_characters, *c))
{
printf("%c is in \"%s\"\n", *c, mystring);
}
c++;
}
return 0;
}
Note that invalid_characters is a C string, ie. a null-terminated char
array.
If you are going to call relative.py
directly and i.e. if you really want to import from a top level module you have to explicitly add it to the sys.path
list.
Here is how it should work:
# Add this line to the beginning of relative.py file
import sys
sys.path.append('..')
# Now you can do imports from one directory top cause it is in the sys.path
import parent
# And even like this:
from parent import Parent
If you think the above can cause some kind of inconsistency you can use this instead:
sys.path.append(sys.path[0] + "/..")
sys.path[0]
refers to the path that the entry point was ran from.
Just go on that directory of your JS file from cmd
and write node jsFile.js
or even node jsFile
; both will work fine.
If you want an actual boolean column:
ALTER TABLE users ADD "priv_user" boolean DEFAULT false;
The error is because of the sql mode which can be strict mode as per latest MYSQL 5.7 documentation
Strict mode affects whether the server permits '0000-00-00' as a valid date: If strict mode is not enabled, '0000-00-00' is permitted and inserts produce no warning. If strict mode is enabled, '0000-00-00' is not permitted and inserts produce an error, unless IGNORE is given as well. For INSERT IGNORE and UPDATE IGNORE, '0000-00-00' is permitted and inserts produce a warning.
To Check MYSQL mode
SELECT @@GLOBAL.sql_mode global, @@SESSION.sql_mode session
Disabling STRICT_TRANS_TABLES mode
However to allow the format 0000-00-00 00:00:00
you have to disable STRICT_TRANS_TABLES mode in mysql config file or by command
By command
SET sql_mode = '';
or
SET GLOBAL sql_mode = '';
Using the keyword GLOBAL
requires super previliges and it affects the operations all clients connect from that time on
if above is not working than go to /etc/mysql/my.cnf
(as per ubuntu) and comment out STRICT_TRANS_TABLES
Also, if you want to permanently set the sql mode at server startup then include SET sql_mode=''
in my.cnf
on Linux or MacOS. For windows this has to be done in my.ini
file.
Note
However strict mode is not enabled by default in MYSQL 5.6. Hence it does not produce the error as per MYSQL 6 documentation which says
MySQL permits you to store a “zero” value of '0000-00-00' as a “dummy date.” This is in some cases more convenient than using NULL values, and uses less data and index space. To disallow '0000-00-00', enable the NO_ZERO_DATE SQL mode.
UPDATE
Regarding the bug matter as said by @Dylan-Su:
I don't think this is the bug it the way MYSQL is evolved over the time due to which some things are changed based on further improvement of the product.
However I have another related bug report regarding the NOW()
function
Datetime field does not accept default NOW()
Another Useful note [see Automatic Initialization and Updating for TIMESTAMP and DATETIME]
As of MySQL 5.6.5, TIMESTAMP and DATETIME columns can be automatically initializated and updated to the current date and time (that is, the current timestamp). Before 5.6.5, this is true only for TIMESTAMP, and for at most one TIMESTAMP column per table. The following notes first describe automatic initialization and updating for MySQL 5.6.5 and up, then the differences for versions preceding 5.6.5.
Update Regarding NO_ZERO_DATE
As of MySQL as of 5.7.4 this mode is deprecated. For previous version you must comment out the respective line in the config file. Refer MySQL 5.7 documentation on NO_ZERO_DATE