This: "\0"
is a string, not a character. A character uses single quotes, like '\0'
.
I got same situation in one of my Ajax calls, where JSON
was throwing an error due to the newline in the Textarea field. The solution given here didn't worked for me.
So i used Javascript's .escape
function and it worked fine. Then to retrieve the value from JSON
, I just unescaped using .unescape
.
I know this post has been (very well) answered by Aquarelle but just in case somebody is having this issue with other tag forms with no text such as inputs i'll leave this here:
If you have an input in your form and placeholder is not showing because a white space at the beginning, this may be caused for you "value" attribute. In case you are using variables to fill the value of an input check that there are no white spaces between the commas and the variables.
example using twig for php framework symfony :
<input type="text" name="subject" value="{{ subject }}" placeholder="hello" /> <-- this is ok
<input type="text" name="subject" value" {{ subject }} " placeholder="hello" /> <-- this will not show placeholder
In this case the tag between {{ }} is the variable, just make sure you are not leaving spaces between the commas because white space is also a valid character.
You partial looks much like an editor template so you could include it as such (assuming of course that your partial is placed in the ~/views/controllername/EditorTemplates
subfolder):
@Html.EditorFor(model => model.SomePropertyOfTypeLocaleBaseModel)
Or if this is not the case simply:
@Html.Partial("nameOfPartial", Model)
Use Array.prototype.map()
with an arrow function:
const arrayColumn = (arr, n) => arr.map(x => x[n]);_x000D_
_x000D_
const twoDimensionalArray = [_x000D_
[1, 2, 3],_x000D_
[4, 5, 6],_x000D_
[7, 8, 9],_x000D_
];_x000D_
_x000D_
console.log(arrayColumn(twoDimensionalArray, 0));
_x000D_
Note: Array.prototype.map()
and arrow functions are part of ECMAScript 6 and not supported everywhere, see ECMAScript 6 compatibility table.
Although there are already many solutions to this, I really have to post this :)
This one is:
Code:
def divisors(n):
# get factors and their counts
factors = {}
nn = n
i = 2
while i*i <= nn:
while nn % i == 0:
factors[i] = factors.get(i, 0) + 1
nn //= i
i += 1
if nn > 1:
factors[nn] = factors.get(nn, 0) + 1
primes = list(factors.keys())
# generates factors from primes[k:] subset
def generate(k):
if k == len(primes):
yield 1
else:
rest = generate(k+1)
prime = primes[k]
for factor in rest:
prime_to_i = 1
# prime_to_i iterates prime**i values, i being all possible exponents
for _ in range(factors[prime] + 1):
yield factor * prime_to_i
prime_to_i *= prime
# in python3, `yield from generate(0)` would also work
for factor in generate(0):
yield factor
A slighest different version, skipping the cut step, taking advantage of the '--no-version' option:
gem list --no-version |xargs gem uninstall -ax
Since you are removing everything, I don't see the need for the 'I' option. Whenever the gem is removed, it's fine.
I assume that REALLY you get object from server and want to get object on output
Object.keys(data).map(k=> data[k].Status=='Invalid' && delete data[k])
var data = { 5: { "ID": "0", "Status": "Valid" } }; // some OBJECT from server response_x000D_
_x000D_
data = { ...data,_x000D_
0: { "ID": "1", "Status": "Valid" },_x000D_
1: { "ID": "2", "Status": "Invalid" },_x000D_
2: { "ID": "3", "Status": "Valid" }_x000D_
}_x000D_
_x000D_
// solution 1: where output is sorted filtred array_x000D_
let arr=Object.keys(data).filter(k=> data[k].Status!='Invalid').map(k=>data[k]).sort((a,b)=>+a.ID-b.ID);_x000D_
_x000D_
// solution2: where output is filtered object_x000D_
Object.keys(data).map(k=> data[k].Status=='Invalid' && delete data[k])_x000D_
_x000D_
// show_x000D_
console.log('Object',data);_x000D_
console.log('Array ',arr);
_x000D_
$(window).load(function() {
$("html, body").animate({ scrollTop: $(document).height() }, 1000);
});
This grabs the height of the page and scrolls it down once the window has loaded. Change the 1000
to whatever you need to do it faster/slower once the page is ready.
In one reusable piece of code I use the directive <%@include file="reuse.html"%>
and in the second I use the standard action <jsp:include page="reuse.html" />
.
Let the code in the reusable file be:
<html>
<head>
<title>reusable</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<img src="candle.gif" height="100" width="50"/> <br />
<p><b>As the candle burns,so do I</b></p>
</body>
After running both the JSP files you see the same output and think if there was any difference between the directive and the action tag. But if you look at the generated servlet
of the two JSP files, you will see the difference.
Here is what you will see when you use the directive:
out.write("<html>\r\n");
out.write(" <head>\r\n");
out.write(" <title>reusable</title>\r\n");
out.write(" <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\r\n");
out.write(" </head>\r\n");
out.write(" <body>\r\n");
out.write(" <img src=\"candle.gif\" height=\"100\" width=\"50\"/> <br />\r\n");
out.write(" <p><b>As the candle burns,so do I</b></p>\r\n");
out.write(" </body>\r\n");
out.write("</html>\r\n");
And this is what you will see for the used standard action in the second JSP file :
org.apache.jasper.runtime.JspRuntimeLibrary.include(request, response, "reusable.html", out, false);
So now you know that the include directive inserts the source of reuse.html
at translation time, but the action tag inserts the response of reuse.html
at runtime.
If you think about it, there is an extra performance hit with every action tag (<jsp:include>
). It means you can guarantee you will always have the latest content, but it increases performance cost.
I find that there are 3 package-based solutions to solve the problem. They are pyenchant, wordnet and corpus(self-defined or from ntlk). Pyenchant couldn't installed easily in win64 with py3. Wordnet doesn't work very well because it's corpus isn't complete. So for me, I choose the solution answered by @Sadik, and use 'set(words.words())' to speed up.
First:
pip3 install nltk
python3
import nltk
nltk.download('words')
Then:
from nltk.corpus import words
setofwords = set(words.words())
print("hello" in setofwords)
>>True
You are using some sort of revision control, right? Then it should be quite simple to restore to the commit before you added the gem, or revert the one where you added it if you have several revisions after that you wish to keep.
Yes it's an issue in webkit and also reported in chromium: http://code.google.com/p/chromium/issues/detail?id=773 It's there since 2008... and still not fixed!!
I'm using a piece of javacsript and jQuery to make my way around this.
function showAlt(){$(this).replaceWith(this.alt)};
function addShowAlt(selector){$(selector).error(showAlt).attr("src", $(selector).src)};
addShowAlt("img");
If you only want one some images:
addShowAlt("#myImgID");
You need to escape your backslash by preceding it with, yes, another backslash:
print("\\")
And for versions prior to Python 3:
print "\\"
The \
character is called an escape character, which interprets the character following it differently. For example, n
by itself is simply a letter, but when you precede it with a backslash, it becomes \n
, which is the newline character.
As you can probably guess, \
also needs to be escaped so it doesn't function like an escape character. You have to... escape the escape, essentially.
var pinIcon = new google.maps.MarkerImage(
"http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld=%E2%80%A2|00D900",
null, /* size is determined at runtime */
null, /* origin is 0,0 */
null, /* anchor is bottom center of the scaled image */
new google.maps.Size(12, 18)
);
Simply apply aggregation function, Sum on your column
df.groupby('steps').sum().show()
Follow the Documentation http://spark.apache.org/docs/2.1.0/api/python/pyspark.sql.html
Check out this link also https://www.analyticsvidhya.com/blog/2016/10/spark-dataframe-and-operations/
.modal {
text-align: center;
}
@media screen and (min-width: 768px) {
.modal:before {
display: inline-block;
vertical-align: middle;
content: " ";
height: 100%;
}
}
.modal-dialog {
display: inline-block;
text-align: left;
vertical-align: middle;
}
And adjust a little bit .fade class to make sure it appears out of the top border of window, instead of center
Try this:
use POSIX qw/strftime/;
print strftime('%Y-%m-%d',localtime);
the strftime
method does the job effectively for me. Very simple and efficient.
I found some information here Javascript Detecting Page Refresh
function UnLoadWindow() {
return 'We strongly recommends NOT closing this window yet.'
}
window.onbeforeunload = UnLoadWindow;
I also encounter with that problem. In my case the problem was that i closed the scanner inside one of the funcs..
public class Main _x000D_
{_x000D_
public static void main(String[] args) _x000D_
{_x000D_
Scanner menu = new Scanner(System.in);_x000D_
boolean exit = new Boolean(false);_x000D_
while(!exit){_x000D_
String choose = menu.nextLine();_x000D_
Part1 t=new Part1()_x000D_
t.start();_x000D_
System.out.println("Noooooo Come back!!!"+choose);_x000D_
}_x000D_
menu.close();_x000D_
}_x000D_
}_x000D_
_x000D_
public class Part1 extends Thread _x000D_
{_x000D_
public void run()_x000D_
{ _x000D_
Scanner s = new Scanner(System.in);_x000D_
String st = s.nextLine();_x000D_
System.out.print("bllaaaaaaa\n"+st);_x000D_
s.close();_x000D_
}_x000D_
}_x000D_
_x000D_
_x000D_
The code above made the same exaption, the solution was to close the scanner only once at the main.
There isn't any magic to it. Boolean expressions like a || b || c || d
are lazily evaluated. Interpeter looks for the value of a
, it's undefined so it's false so it moves on, then it sees b
which is null, which still gives false result so it moves on, then it sees c
- same story. Finally it sees d
and says 'huh, it's not null, so I have my result' and it assigns it to the final variable.
This trick will work in all dynamic languages that do lazy short-circuit evaluation of boolean expressions. In static languages it won't compile (type error). In languages that are eager in evaluating boolean expressions, it'll return logical value (i.e. true in this case).
SELECT column1 FROM table WHERE ISNUMERIC(column1) = 1
Note, as Damien_The_Unbeliever has pointed out, this will include any valid numeric type.
To filter out columns containing non-digit characters (and empty strings), you could use
SELECT column1 FROM table WHERE column1 not like '%[^0-9]%' and column1 != ''
Take a look at the excellent Schematics lib
https://github.com/schematics/schematics
It allows you to created typed data structures that can serialize/deserialize from python to Javascript flavour, eg:
class MapPrice(Model):
price_before_vat = DecimalType(serialized_name='priceBeforeVat')
vat_rate = DecimalType(serialized_name='vatRate')
vat = DecimalType()
total_price = DecimalType(serialized_name='totalPrice')
For a project this size, you should stop writing pure JavaScript and turn to some of the libraries available. I'd recommend jQuery (http://jquery.com/), which allows you to select elements by css-selectors, which I recon should speed up your development quite a bit.
Example of your code then becomes;
function AddtoCart() {
var len = $("#Items tr").length, $row, $inp1, $inp2, $cells;
$row = $("#Items td:first").clone(true);
$cells = $row.find("td");
$cells.get(0).html( len );
$inp1 = $cells.get(1).find("input:first");
$inp1.attr("id", $inp1.attr("id") + len).val("");
$inp2 = $cells.get(2).find("input:first");
$inp2.attr("id", $inp2.attr("id") + len).val("");
$("#Items").append($row);
}
I can see that you might not understand that code yet, but take a look at jQuery, it's easy to learn and will make this development way faster.
I would use the libraries already created specifically for js shopping carts if I were you though.
To your problem; If i look at your jsFiddle, it doesn't even seem like you have defined a table with the id Items? Maybe that's why it doesn't work?
If that is one table and have nothing to do with this - the simplest solution can be copy&paste to notepad then copy&paste back to excel :P
Downloading Wget is not necessary; the .NET Framework has web client classes built in.
$wc = New-Object system.Net.WebClient;
$sms = Read-Host "Enter SMS text";
$sms = [System.Web.HttpUtility]::UrlEncode($sms);
$smsResult = $wc.downloadString("http://smsserver/SNSManager/msgSend.jsp?uid&to=smartsms:*+001XXXXXX&msg=$sms&encoding=windows-1255")
SELECT ..., CONCAT( 'category_id=', tableOne.category_id) as query2 FROM tableOne
LEFT JOIN tableTwo
ON tableTwo.query = query2
The currently accepted answer doesn't always work.
(To read about the problem and circumstances, read this: Defined function is "Not defined".)
So, you have 3 options:
1 (it has above-mentioned drawback)
<input type="checkbox" onchange="doAlert(this)">
<script>
function doAlert(checkboxElem) {
if (checkboxElem.checked) {
alert ('hi');
} else {
alert ('bye');
}
}
</script>
2 and 3
<input type="checkbox" id="foo">
<script>
function doAlert() {
var input = document.querySelector('#foo');
// input.addEventListener('change', function() { ... });
// or
// input.onchange = function() { ... };
input.addEventListener('change', function() {
if (input.checked) {
alert ('hi');
} else {
alert ('bye');
}
});
}
doAlert();
</script>
If you want to restrict your search only to files you should consider to use -type f
in your search
try to use also -iname
for case-insensitive search
Example:
find /path -iname 'yourstring*' -type f
You could also perform some operations on results without pipe sign or xargs
Example:
Search for files and show their size in MB
find /path -iname 'yourstring*' -type f -exec du -sm {} \;
xkr.us has a great discussion, with examples. To quote their summary:
The escape() method does not encode the + character which is interpreted as a space on the server side as well as generated by forms with spaces in their fields. Due to this shortcoming and the fact that this function fails to handle non-ASCII characters correctly, you should avoid use of escape() whenever possible. The best alternative is usually encodeURIComponent().
escape() will not encode: @*/+
Use of the encodeURI() method is a bit more specialized than escape() in that it encodes for URIs as opposed to the querystring, which is part of a URL. Use this method when you need to encode a string to be used for any resource that uses URIs and needs certain characters to remain un-encoded. Note that this method does not encode the ' character, as it is a valid character within URIs.
encodeURI() will not encode: ~!@#$&*()=:/,;?+'
Lastly, the encodeURIComponent() method should be used in most cases when encoding a single component of a URI. This method will encode certain chars that would normally be recognized as special chars for URIs so that many components may be included. Note that this method does not encode the ' character, as it is a valid character within URIs.
encodeURIComponent() will not encode: ~!*()'
Here are a couple of resources that will help get started: http://www.anchor.com.au/hosting/support/CreatingAQuickMySQLRelationalDatabase and http://code.tutsplus.com/articles/sql-for-beginners-part-3-database-relationships--net-8561
Also as others said, use a GUI - try downloading and installing Xampp (or Wamp) which run server-software (Apache and mySQL) on your computer. Then when you navigate to //localhost in a browser, select PHPMyAdmin to start working with a mySQL database visually. As mentioned above, used innoDB to allow you to make relationships as you requested. Makes it heaps easier to see what you're doing with the database tables. Just remember to STOP Apache and mySQL services when finished - these can open up ports which can expose you to hacking/malicious threats.
Check all the references carefully
For me cleaning entire solution by deleting manually, updating (removing and adding) references again with version in sync with target machine and then building with with Copy Local > False for GAC assemblies solves the problem.
<ul id="category-tabs">
<li><a href="javascript:void"><i class="fa fa-plus-circle"></i>Category 1</a>
<ul>
<li><a href="javascript:void">item 1</a></li>
<li><a href="javascript:void">item 2</a></li>
<li><a href="javascript:void">item 3</a></li>
</ul>
</li> </ul>
//Jquery
$(document).ready(function() {
$('li').click(function() {
$('i').toggleClass('fa-plus-square fa-minus-square');
});
});
You can accomplish this by using the <datalist>
tag in HTML5.
<input type="text" name="product" list="productName"/>
<datalist id="productName">
<option value="Pen">Pen</option>
<option value="Pencil">Pencil</option>
<option value="Paper">Paper</option>
</datalist>
_x000D_
If you double click on the input text in the browser a list with the defined option will appear.
Alternative to sed, awk, grep:
xargs -n2 -d'\n'
This is best when you want to join N lines and you only need space delimited output.
My original answer was xargs -n2
which separates on words rather than lines. -d
can be used to split the input by any single character.
$(document).ready(function() {
$('#abc_frame').attr('src',url);
})
How are you generating your data?
See how the output shows that your data is of 'object' type? the groupby operations specifically check whether each column is a numeric dtype first.
In [31]: data
Out[31]:
<class 'pandas.core.frame.DataFrame'>
DatetimeIndex: 2557 entries, 2004-01-01 00:00:00 to 2010-12-31 00:00:00
Freq: <1 DateOffset>
Columns: 360 entries, -89.75 to 89.75
dtypes: object(360)
look ?
Did you initialize an empty DataFrame first and then filled it? If so that's probably why it changed with the new version as before 0.9 empty DataFrames were initialized to float type but now they are of object type. If so you can change the initialization to DataFrame(dtype=float)
.
You can also call frame.astype(float)
Sorry not sure what was going on this worked in the end:
<VirtualHost *>
ServerName example.com
DocumentRoot /var/www/html/mjp
Alias /ncn "/var/www/html/ncn"
<Directory "/var/www/html/ncn">
Options None
AllowOverride None
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
Yes, according to RFC 3696 apostrophes are valid as long as they come before the @ symbol.
I agree with IanS's answer. No need to install new SDK. Just make sure the registry key values SDK35ToolsPath and SDK40ToolPath for MSBuild are pointing to correct registry key values.
In my case my project was targeted for .NET 3.5 and I had to set SDK35ToolsPath for key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\4.0 to $(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v6.0A\WinSDKNetFxTools@InstallationFolder). And everything worked.
More correct variant:
{
struct timespec delta = {5 /*secs*/, 135 /*nanosecs*/};
while (nanosleep(&delta, &delta));
}
There are some funnies restoring old databases into SQL 2008 via the guy; have you tried doing it via TSQL ?
Use Master
Go
RESTORE DATABASE YourDB
FROM DISK = 'C:\YourBackUpFile.bak'
WITH MOVE 'YourMDFLogicalName' TO 'D:\Data\YourMDFFile.mdf',--check and adjust path
MOVE 'YourLDFLogicalName' TO 'D:\Data\YourLDFFile.ldf'
You need to enclose your class in {
and }
. A few extra pointers: According to the Java coding conventions, you should
{
on the same line as the method declaration:Here's how I would write it:
public class ModMyMod extends BaseMod {
public String version() {
return "1.2_02";
}
public void addRecipes(CraftingManager recipes) {
recipes.addRecipe(new ItemStack(Item.diamond), new Object[] {
"#", Character.valueOf('#'), Block.dirt
});
}
}
git diff --name-only --diff-filter=U | xargs git checkout --theirs
Seems to do the job. Note that you have to be cd'ed to the root directory of the git repo to achieve this.
This library is fantastic:
https://github.com/adamschwartz/log
Use Markdown for log messages.
I had the same problem. I had to follow these steps to resolve the issue:
1. Make sure you have the following dependencies:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson-version}</version> // 2.4.3
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson-version}</version> // 2.4.3
</dependency>
2. Create the following filter:
public class CORSFilter extends OncePerRequestFilter {
@Override
protected void doFilterInternal(HttpServletRequest request,
HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
String origin = request.getHeader("origin");
origin = (origin == null || origin.equals("")) ? "null" : origin;
response.addHeader("Access-Control-Allow-Origin", origin);
response.addHeader("Access-Control-Allow-Methods", "POST, GET, PUT, UPDATE, DELETE, OPTIONS");
response.addHeader("Access-Control-Allow-Credentials", "true");
response.addHeader("Access-Control-Allow-Headers",
"Authorization, origin, content-type, accept, x-requested-with");
filterChain.doFilter(request, response);
}
}
3. Apply the above filter for the requests in web.xml
<filter>
<filter-name>corsFilter</filter-name>
<filter-class>com.your.package.CORSFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>corsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
I hope this is useful to somebody.
If you're using eval to convert a string to function, and you want to check if this eval'd method exists, you'll want to use typeof and your function string inside an eval:
var functionString = "nonexsitantFunction"
eval("typeof " + functionString) // returns "undefined" or "function"
Don't reverse this and try a typeof on eval. If you do a ReferenceError will be thrown:
var functionString = "nonexsitantFunction"
typeof(eval(functionString)) // returns ReferenceError: [function] is not defined
"I need to install it to the folder of my C program." Why?
Include usb.h:
#include <usb.h>
and remember to add -lusb to gcc:
gcc -o example example.c -lusb
This work fine for me.
In order to maintain for numerical stability, max(x) should be subtracted. The following is the code for softmax function;
def softmax(x):
if len(x.shape) > 1:
tmp = np.max(x, axis = 1)
x -= tmp.reshape((x.shape[0], 1))
x = np.exp(x)
tmp = np.sum(x, axis = 1)
x /= tmp.reshape((x.shape[0], 1))
else:
tmp = np.max(x)
x -= tmp
x = np.exp(x)
tmp = np.sum(x)
x /= tmp
return x
The problem with for ... in ...
— and this only becomes a problem when a programmer doesn't really understand the language; it's not really a bug or anything — is that it iterates over all members of an object (well, all enumerable members, but that's a detail for now). When you want to iterate over just the indexed properties of an array, the only guaranteed way to keep things semantically consistent is to use an integer index (that is, a for (var i = 0; i < array.length; ++i)
style loop).
Any object can have arbitrary properties associated with it. There would be nothing terrible about loading additional properties onto an array instance, in particular. Code that wants to see only indexed array-like properties therefore must stick to an integer index. Code that is fully aware of what for ... in
does and really need to see all properties, well then that's ok too.
Your javascript is executed before the HTML is generated, so it doesn't "see" the ungenerated INPUT elements. For jQuery, you would either stick the Javascript at the end of the HTML or wrap it like this:
<script type="text/javascript"> $(function() { //jQuery trick to say after all the HTML is parsed. $("input[type=radio]").click(function() { var total = 0; $("input[type=radio]:checked").each(function() { total += parseFloat($(this).val()); }); $("#totalSum").val(total); }); }); </script>
EDIT: This code works for me
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <strong>Choose a base package:</strong> <input id="item_0" type="radio" name="pkg" value="1942" />Base Package 1 - $1942 <input id="item_1" type="radio" name="pkg" value="2313" />Base Package 2 - $2313 <input id="item_2" type="radio" name="pkg" value="2829" />Base Package 3 - $2829 <strong>Choose an add on:</strong> <input id="item_10" type="radio" name="ext" value="0" />No add-on - +$0 <input id="item_12" type="radio" name="ext" value="2146" />Add-on 1 - (+$2146) <input id="item_13" type="radio" name="ext" value="2455" />Add-on 2 - (+$2455) <input id="item_14" type="radio" name="ext" value="2764" />Add-on 3 - (+$2764) <input id="item_15" type="radio" name="ext" value="3073" />Add-on 4 - (+$3073) <input id="item_16" type="radio" name="ext" value="3382" />Add-on 5 - (+$3382) <input id="item_17" type="radio" name="ext" value="3691" />Add-on 6 - (+$3691) <strong>Your total is:</strong> <input id="totalSum" type="text" name="totalSum" readonly="readonly" size="5" value="" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> <script type="text/javascript"> $("input[type=radio]").click(function() { var total = 0; $("input[type=radio]:checked").each(function() { total += parseFloat($(this).val()); }); $("#totalSum").val(total); }); </script> </body> </html>
In my case I was using MvcMailer (https://github.com/smsohan/MvcMailer) and wanted to access a partial view from another folder, that wasn't in "Shared." The above solutions didn't work, but using a relative path did.
@Html.Partial("../MyViewFolder/Partials/_PartialView", Model.MyObject)
For me, it was because I forgot to setup firewall rule on database server for my Django.
Your @drawable/list_divide
should look like this:
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line">
<stroke
android:height="1dp"
android:color="#8F8F8F"
android:dashWidth="1dp"
android:dashGap="1dp" />
</shape>
In your version you provide an android:width="1dp"
, simply change it to an android:height="1dp"
and it should work!
In most of the cases, the code is not optimized. Release those objects which you think shall not be needed further. Avoid creation of objects in your loop each time. Try to use caches. I don't know how your application is doing. But In programming, one rule of normal life applies as well
Prevention is better than cure. "Don't create unnecessary objects"
In drawable I use this xml code to define the border and background:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="4dp" android:color="#D8FDFB" />
<padding android:left="7dp" android:top="7dp"
android:right="7dp" android:bottom="7dp" />
<corners android:radius="4dp" />
<solid android:color="#f0600000"/>
</shape>
Somebody asked me to post a link to the framework! that I presented at Open World 2012. This is the full blog post that demonstrates how to architect a solution with external tables.
Try this:
string employeeName = chldNode.Attributes["Name"].Value;
Edit: As pointed out in the comments, this will throw an exception if the attribute doesn't exist. The safe way is:
var attribute = node.Attributes["Name"];
if (attribute != null){
string employeeName = attribute.Value;
// Process the value here
}
Yes, but then what do you do about the django objects? simple json tends to choke on them.
If the objects are individual model objects (not querysets, e.g.), I have occasionally stored the model object type and the pk, like so:
seralized_dict = simplejson.dumps(my_dict,
default=lambda a: "[%s,%s]" % (str(type(a)), a.pk)
)
to de-serialize, you can reconstruct the object referenced with model.objects.get(). This doesn't help if you are interested in the object details at the type the dict is stored, but it's effective if all you need to know is which object was involved.
import Foundation
var string = NSString(data: NSData?, encoding: UInt)
I wanted to show how powerful it can be aside from just checking "-lt".
Example: I used it to calculate time differences take from Windows event view Application log:
Get the difference between the two date times:
PS> $Obj = ((get-date "10/22/2020 12:51:1") - (get-date "10/22/2020 12:20:1 "))
Object created:
PS> $Obj
Days : 0
Hours : 0
Minutes : 31
Seconds : 0
Milliseconds : 0
Ticks : 18600000000
TotalDays : 0.0215277777777778
TotalHours : 0.516666666666667
TotalMinutes : 31
TotalSeconds : 1860
TotalMilliseconds : 1860000
Access an item directly:
PS> $Obj.Minutes
31
You can pass arbitrary parameters through the query string, but you can also set up custom routes to handle it in a RESTful way:
http://ws.audioscrobbler.com/2.0/?method=artist.getimages&artist=cher&
api_key=b25b959554ed76058ac220b7b2e0a026
That could be:
routes.MapRoute(
"ArtistsImages",
"{ws}/artists/{artist}/{action}/{*apikey}",
new { ws = "2.0", controller="artists" artist = "", action="", apikey="" }
);
So if someone used the following route:
ws.audioscrobbler.com/2.0/artists/cher/images/b25b959554ed76058ac220b7b2e0a026/
It would take them to the same place your example querystring did.
The above is just an example, and doesn't apply the business rules and constraints you'd have to set up to make sure people didn't 'hack' the URL.
The WHERE
clause is misplaced, it has to follow the table references and JOIN operations.
Something like this:
FROM tartikel p1
JOIN tartikelpict p2
ON p1.kArtikel = p2.kArtikel
AND p2.nNr = 1
WHERE p1.dErstellt >= DATE(NOW()) - INTERVAL 7 DAY
ORDER BY p1.kArtikel DESC
EDIT (three plus years later)
The above essentially answers the question "I tried to add a WHERE clause to my query and now the query is returning an error, how do I fix it?"
As to a question about writing a condition that checks a date range of "last 7 days"...
That really depends on interpreting the specification, what the datatype of the column in the table is (DATE or DATETIME) and what data is available... what should be returned.
To summarize: the general approach is to identify a "start" for the date/datetime range, and "end" of that range, and reference those in a query. Let's consider something easier... all rows for "yesterday".
If our column is DATE type. Before we incorporate an expression into a query, we can test it in a simple SELECT
SELECT DATE(NOW()) + INTERVAL -1 DAY
and verify the result returned is what we expect. Then we can use that same expression in a WHERE clause, comparing it to a DATE column like this:
WHERE datecol = DATE(NOW()) + INTERVAL -1 DAY
For a DATETIME or TIMESTAMP column, we can use >=
and <
inequality comparisons to specify a range
WHERE datetimecol >= DATE(NOW()) + INTERVAL -1 DAY
AND datetimecol < DATE(NOW()) + INTERVAL 0 DAY
For "last 7 days" we need to know if that mean from this point right now, back 7 days ... e.g. the last 7*24 hours , including the time component in the comparison, ...
WHERE datetimecol >= NOW() + INTERVAL -7 DAY
AND datetimecol < NOW() + INTERVAL 0 DAY
the last seven complete days, not including today
WHERE datetimecol >= DATE(NOW()) + INTERVAL -7 DAY
AND datetimecol < DATE(NOW()) + INTERVAL 0 DAY
or past six complete days plus so far today ...
WHERE datetimecol >= DATE(NOW()) + INTERVAL -6 DAY
AND datetimecol < NOW() + INTERVAL 0 DAY
I recommend testing the expressions on the right side in a SELECT statement, we can use a user-defined variable in place of NOW() for testing, not being tied to what NOW() returns so we can test borders, across week/month/year boundaries, and so on.
SET @clock = '2017-11-17 11:47:47' ;
SELECT DATE(@clock)
, DATE(@clock) + INTERVAL -7 DAY
, @clock + INTERVAL -6 DAY
Once we have expressions that return values that work for "start" and "end" for our particular use case, what we mean by "last 7 days", we can use those expressions in range comparisons in the WHERE clause.
(Some developers prefer to use the DATE_ADD
and DATE_SUB
functions in place of the + INTERVAL val DAY/HOUR/MINUTE/MONTH/YEAR
syntax.
And MySQL provides some convenient functions for working with DATE, DATETIME and TIMESTAMP datatypes... DATE, LAST_DAY,
Some developers prefer to calculate the start and end in other code, and supply string literals in the SQL query, such that the query submitted to the database is
WHERE datetimecol >= '2017-11-10 00:00'
AND datetimecol < '2017-11-17 00:00'
And that approach works too. (My preference would be to explicitly cast those string literals into DATETIME, either with CAST, CONVERT or just the + INTERVAL trick...
WHERE datetimecol >= '2017-11-10 00:00' + INTERVAL 0 SECOND
AND datetimecol < '2017-11-17 00:00' + INTERVAL 0 SECOND
The above all assumes we are storing "dates" in appropriate DATE, DATETIME and/or TIMESTAMP datatypes, and not storing them as strings in variety of formats e.g. 'dd/mm/yyyy'
, m/d/yyyy
, julian dates, or in sporadically non-canonical formats, or as a number of seconds since the beginning of the epoch, this answer would need to be much longer.
In addition to what Tichodroma said, you might end up using this syntax:
outputString=$(python myPythonScript arg1 arg2 arg3)
You can simply do:
Serial.println(n);
which will convert n
to an ASCII string automatically. See the documentation for Serial.println()
.
In fact, in R, this operation is very easy:
If the matrix 'a' contains some NaN, you just need to use the following code to replace it by 0:
a <- matrix(c(1, NaN, 2, NaN), ncol=2, nrow=2)
a[is.nan(a)] <- 0
a
If the data frame 'b' contains some NaN, you just need to use the following code to replace it by 0:
#for a data.frame:
b <- data.frame(c1=c(1, NaN, 2), c2=c(NaN, 2, 7))
b[is.na(b)] <- 0
b
Note the difference is.nan
when it's a matrix vs. is.na
when it's a data frame.
Doing
#...
b[is.nan(b)] <- 0
#...
yields: Error in is.nan(b) : default method not implemented for type 'list'
because b is a data frame.
Note: Edited for small but confusing typos
The correct thing to do here is to store it as uniqueidentifier
- this is then fully indexable, etc. at the database. The next-best option would be a binary(16)
column: standard GUIDs are exactly 16 bytes in length.
If you must store it as a string, the length really comes down to how you choose to encode it. As hex (AKA base-16 encoding) without hyphens it would be 32 characters (two hex digits per byte), so char(32)
.
However, you might want to store the hyphens. If you are short on space, but your database doesn't support blobs / guids natively, you could use Base64 encoding and remove the ==
padding suffix; that gives you 22 characters, so char(22)
. There is no need to use Unicode, and no need for variable-length - so nvarchar(max)
would be a bad choice, for example.
If you want just a first selected row, you can:
select fname from MyTbl where rownum = 1
You can also use analytic functions to order and take the top x:
select max(fname) over (rank() order by some_factor) from MyTbl
Use static method valueOf(String)
defined for each enum
.
For example if you have enum MyEnum
you can say MyEnum.valueOf("foo")
Virtual scrolling is another way to improve scrolling performance when dealing with huge lists and large dataset.
One way to implement this is by using Angular Material md-virtual-repeat
as it is demonstrated on this Demo with 50,000 items
Taken straight from the documentation of virtual repeat:
Virtual repeat is a limited substitute for ng-repeat that renders only enough dom nodes to fill the container and recycling them as the user scrolls.
//Try this,it can find divisors of verrrrrrrrrry big numbers (pretty efficiently :-))
#include<iostream>
#include<cstdio>
#include<cmath>
#include<vector>
#include<conio.h>
using namespace std;
vector<double> D;
void divs(double N);
double mod(double &n1, double &n2);
void push(double N);
void show();
int main()
{
double N;
cout << "\n Enter number: "; cin >> N;
divs(N); // find and push divisors to D
cout << "\n Divisors of "<<N<<": "; show(); // show contents of D (all divisors of N)
_getch(); // used visual studio, if it isn't supported replace it by "getch();"
return(0);
}
void divs(double N)
{
for (double i = 1; i <= sqrt(N); ++i)
{
if (!mod(N, i)) { push(i); if(i*i!=N) push(N / i); }
}
}
double mod(double &n1, double &n2)
{
return(((n1/n2)-floor(n1/n2))*n2);
}
void push(double N)
{
double s = 1, e = D.size(), m = floor((s + e) / 2);
while (s <= e)
{
if (N==D[m-1]) { return; }
else if (N > D[m-1]) { s = m + 1; }
else { e = m - 1; }
m = floor((s + e) / 2);
}
D.insert(D.begin() + m, N);
}
void show()
{
for (double i = 0; i < D.size(); ++i) cout << D[i] << " ";
}
Session timeout is a notion that has to be implemented in code if you want strict guarantees; that's the only way you can be absolutely certain that no session ever will survive after X minutes of inactivity.
If relaxing this requirement a little is acceptable and you are fine with placing a lower bound instead of a strict limit to the duration, you can do so easily and without writing custom logic.
If your sessions are implemented with cookies (which they probably are), and if the clients are not malicious, you can set an upper bound on the session duration by tweaking certain parameters. If you are using PHP's default session handling with cookies, setting session.gc_maxlifetime
along with session_set_cookie_params
should work for you like this:
// server should keep session data for AT LEAST 1 hour
ini_set('session.gc_maxlifetime', 3600);
// each client should remember their session id for EXACTLY 1 hour
session_set_cookie_params(3600);
session_start(); // ready to go!
This works by configuring the server to keep session data around for at least one hour of inactivity and instructing your clients that they should "forget" their session id after the same time span. Both of these steps are required to achieve the expected result.
If you don't tell the clients to forget their session id after an hour (or if the clients are malicious and choose to ignore your instructions) they will keep using the same session id and its effective duration will be non-deterministic. That is because sessions whose lifetime has expired on the server side are not garbage-collected immediately but only whenever the session GC kicks in.
GC is a potentially expensive process, so typically the probability is rather small or even zero (a website getting huge numbers of hits will probably forgo probabilistic GC entirely and schedule it to happen in the background every X minutes). In both cases (assuming non-cooperating clients) the lower bound for effective session lifetimes will be session.gc_maxlifetime
, but the upper bound will be unpredictable.
If you don't set session.gc_maxlifetime
to the same time span then the server might discard idle session data earlier than that; in this case, a client that still remembers their session id will present it but the server will find no data associated with that session, effectively behaving as if the session had just started.
You can make things completely controllable by using custom logic to also place an upper bound on session inactivity; together with the lower bound from above this results in a strict setting.
Do this by saving the upper bound together with the rest of the session data:
session_start(); // ready to go!
$now = time();
if (isset($_SESSION['discard_after']) && $now > $_SESSION['discard_after']) {
// this session has worn out its welcome; kill it and start a brand new one
session_unset();
session_destroy();
session_start();
}
// either new or old, it should live at most for another hour
$_SESSION['discard_after'] = $now + 3600;
So far we have not been concerned at all with the exact values of each session id, only with the requirement that the data should exist as long as we need them to. Be aware that in the (unlikely) case that session ids matter to you, care must be taken to regenerate them with session_regenerate_id
when required.
Hibernate logging has to be also enabled in hibernate configuration.
Add lines
hibernate.show_sql=true
hibernate.format_sql=true
either to
server\default\deployers\ejb3.deployer\META-INF\jpa-deployers-jboss-beans.xml
or to application's persistence.xml
in <persistence-unit><properties>
tag.
Anyway hibernate logging won't include (in useful form) info on actual prepared statements' parameters.
There is an alternative way of using log4jdbc for any kind of sql logging.
The above answer assumes that you run the code that uses hibernate on JBoss, not in IDE. In this case you should configure logging also on JBoss in server\default\deploy\jboss-logging.xml, not in local IDE classpath.
Note that JBoss 6 doesn't use log4j by default. So adding log4j.properties to ear won't help. Just try to add to jboss-logging.xml:
<logger category="org.hibernate">
<level name="DEBUG"/>
</logger>
Then change threshold for root logger. See SLF4J logger.debug() does not get logged in JBoss 6.
If you manage to debug hibernate queries right from IDE (without deployment), then you should have log4j.properties, log4j, slf4j-api and slf4j-log4j12 jars on classpath. See http://www.mkyong.com/hibernate/how-to-configure-log4j-in-hibernate-project/.
I have solved my issue by adding
android:windowSoftInputMode="adjustNothing"
In manifest file add.
and making the Recyclerviews constraint isScrollContainer to false .
android:isScrollContainer="false"
Your first CSS selector—social.h2
—is looking for the "social" element in the "h2", class, e.g.:
<social class="h2">
Class selectors are proceeded with a dot (.
). Also, use a space () to indicate that one element is inside of another. To find an
<h2>
descendant of an element in the social
class, try something like:
.social h2 {
color: pink;
font-size: 14px;
}
To get a better understanding of CSS selectors and how they are used to reference your HTML, I suggest going through the interactive HTML and CSS tutorials from CodeAcademy. I hope that this helps point you in the right direction.
Hope this one will meets your need. Supply the string to process as input and supply the words which should be bold/colored as input.
func attributedString(parentString:String, arrayOfStringToProcess:[String], color:UIColor) -> NSAttributedString
{
let parentAttributedString = NSMutableAttributedString(string:parentString, attributes:nil)
let parentStringWords = parentAttributedString.string.components(separatedBy: " ")
if parentStringWords.count != 0
{
let wordSearchArray = arrayOfStringToProcess.filter { inputArrayIndex in
parentStringWords.contains(where: { $0 == inputArrayIndex }
)}
for eachWord in wordSearchArray
{
parentString.enumerateSubstrings(in: parentString.startIndex..<parentString.endIndex, options: .byWords)
{
(substring, substringRange, _, _) in
if substring == eachWord
{
parentAttributedString.addAttribute(.font, value: UIFont.boldSystemFont(ofSize: 15), range: NSRange(substringRange, in: parentString))
parentAttributedString.addAttribute(.foregroundColor, value: color, range: NSRange(substringRange, in: parentString))
}
}
}
}
return parentAttributedString
}
Thank you. Happy Coding.
No way to do this that I know of, although I'm very curious to read if anyone has a good answer. I have been thinking about adding something like this to one of the apps my company builds, but have found no good way to do it.
The one thing I can think of (although not directly on point) is that I believe you can limit the total memory usage for a COM+ application in Windows. It would require the app to be written to run in COM+, of course, but it's the closest way I know of.
The working set stuff is good (Job Objects also control working sets), but that's not total memory usage, only real memory usage (paged in) at any one time. It may work for what you want, but afaik it doesn't limit total allocated memory.
BehaviourSubject will return the initial value or the current value on Subscription
var bSubject= new Rx.BehaviorSubject(0); // 0 is the initial value
bSubject.subscribe({
next: (v) => console.log('observerA: ' + v) // output initial value, then new values on `next` triggers
});
bSubject.next(1); // output new value 1 for 'observer A'
bSubject.next(2); // output new value 2 for 'observer A', current value 2 for 'Observer B' on subscription
bSubject.subscribe({
next: (v) => console.log('observerB: ' + v) // output current value 2, then new values on `next` triggers
});
bSubject.next(3);
With output:
observerA: 0
observerA: 1
observerA: 2
observerB: 2
observerA: 3
observerB: 3
Subject does not return the current value on Subscription. It triggers only on .next(value)
call and return/output the value
var subject = new Rx.Subject();
subject.next(1); //Subjects will not output this value
subject.subscribe({
next: (v) => console.log('observerA: ' + v)
});
subject.subscribe({
next: (v) => console.log('observerB: ' + v)
});
subject.next(2);
subject.next(3);
With the following output on the console:
observerA: 2
observerB: 2
observerA: 3
observerB: 3
You set the style per element and not by its content:
function init() {
document.getElementById("about").style.color = 'blue';
}
With innerHTML
you get/set the content of an element. So if you would want to modify your title, innerHTML
would be the way to go.
In your case, however, you just want to modify a property of the element (change the color of the text inside it), so you address the style
property of the element itself.
fedorqui has a working solution but there is another way to do the same thing.
Chock if a variable is set
#!/bin/bash
amIEmpty='Hello'
# This will be true if the variable has a value
if [ $amIEmpty ]; then
echo 'No, I am not!';
fi
Or to verify that a variable is empty
#!/bin/bash
amIEmpty=''
# This will be true if the variable is empty
if [ ! $amIEmpty ]; then
echo 'Yes I am!';
fi
tldp.org has good documentation about if in bash:
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html
You can use as below:
string selected = cmbbox.Text;
MessageBox.Show(selected);
Maximum number of connections are impacted by certain limits on both client & server sides, albeit a little differently.
On the client side:
Increase the ephermal port range, and decrease the tcp_fin_timeout
To find out the default values:
sysctl net.ipv4.ip_local_port_range
sysctl net.ipv4.tcp_fin_timeout
The ephermal port range defines the maximum number of outbound sockets a host can create from a particular I.P. address. The fin_timeout
defines the minimum time these sockets will stay in TIME_WAIT
state (unusable after being used once).
Usual system defaults are:
net.ipv4.ip_local_port_range = 32768 61000
net.ipv4.tcp_fin_timeout = 60
This basically means your system cannot consistently guarantee more than (61000 - 32768) / 60 = 470
sockets per second. If you are not happy with that, you could begin with increasing the port_range
. Setting the range to 15000 61000
is pretty common these days. You could further increase the availability by decreasing the fin_timeout
. Suppose you do both, you should see over 1500 outbound connections per second, more readily.
To change the values:
sysctl net.ipv4.ip_local_port_range="15000 61000"
sysctl net.ipv4.tcp_fin_timeout=30
The above should not be interpreted as the factors impacting system capability for making outbound connections per second. But rather these factors affect system's ability to handle concurrent connections in a sustainable manner for large periods of "activity."
Default Sysctl values on a typical Linux box for tcp_tw_recycle
& tcp_tw_reuse
would be
net.ipv4.tcp_tw_recycle=0
net.ipv4.tcp_tw_reuse=0
These do not allow a connection from a "used" socket (in wait state) and force the sockets to last the complete time_wait
cycle. I recommend setting:
sysctl net.ipv4.tcp_tw_recycle=1
sysctl net.ipv4.tcp_tw_reuse=1
This allows fast cycling of sockets in time_wait
state and re-using them. But before you do this change make sure that this does not conflict with the protocols that you would use for the application that needs these sockets. Make sure to read post "Coping with the TCP TIME-WAIT" from Vincent Bernat to understand the implications. The net.ipv4.tcp_tw_recycle
option is quite problematic for public-facing servers as it won’t handle connections from two different computers behind the same NAT device, which is a problem hard to detect and waiting to bite you. Note that net.ipv4.tcp_tw_recycle
has been removed from Linux 4.12.
On the Server Side:
The net.core.somaxconn
value has an important role. It limits the maximum number of requests queued to a listen socket. If you are sure of your server application's capability, bump it up from default 128 to something like 128 to 1024. Now you can take advantage of this increase by modifying the listen backlog variable in your application's listen call, to an equal or higher integer.
sysctl net.core.somaxconn=1024
txqueuelen
parameter of your ethernet cards also have a role to play. Default values are 1000, so bump them up to 5000 or even more if your system can handle it.
ifconfig eth0 txqueuelen 5000
echo "/sbin/ifconfig eth0 txqueuelen 5000" >> /etc/rc.local
Similarly bump up the values for net.core.netdev_max_backlog
and net.ipv4.tcp_max_syn_backlog
. Their default values are 1000 and 1024 respectively.
sysctl net.core.netdev_max_backlog=2000
sysctl net.ipv4.tcp_max_syn_backlog=2048
Now remember to start both your client and server side applications by increasing the FD ulimts, in the shell.
Besides the above one more popular technique used by programmers is to reduce the number of tcp write calls. My own preference is to use a buffer wherein I push the data I wish to send to the client, and then at appropriate points I write out the buffered data into the actual socket. This technique allows me to use large data packets, reduce fragmentation, reduces my CPU utilization both in the user land and at kernel-level.
From the docs:
from .. import scriptA
You can do this in packages, but not in scripts you run directly. From the link above:
Note that both explicit and implicit relative imports are based on the name of the current module. Since the name of the main module is always "__main__", modules intended for use as the main module of a Python application should always use absolute imports.
If you create a script that imports A.B.B, you won't receive the ValueError.
Based on answers from the community, there appear to be several ways that might solve this:
install.packages('package_name', dependencies=TRUE, repos='http://cran.rstudio.com/')
http_proxy=http://host:port/
:"C:\Program Files\RStudio\bin\rstudio.exe" http_proxy=http://host:port/
I was banging my head against a wall with this issue for a while. In our environment, we consume price files from our suppliers in various formats, some of which have upward of a million records. This issue usually occurs where:
The problem is that even if you set your external input column to the desired data type, the file gets scanned every time you run the package and is dynamically changed to whatever the OLEDB driver thinks the field should be.
Our source files typically contain field headers (text) and prices (numeric fields), which gives me an easy solution:
First step:
For mixed fields:
For numeric fields:
Using the advanced editor for the OLE DB source, set the output column for the price field (or any other numeric field) to a numeric DataType. This causes any records that contain text in these fields to fail, including the header record, but forces a conversion on numeric values saved as text.
Set the Error Output to ignore failures on your numeric fields.
Alternatively, if you still need any errors on the numeric fields redirected, remove the header row by changing the SQL WHERE clause to exclude the header values then,
Obviously this method only works where you have header fields, but hopefully this helps some of you.
I faced similar error after upgrading to Android Studio 3.1.2
with gradle 4.4
& plugin 3.1.2
, then tried almost all of the above solutions with generating the same error again & again.
Invalidate Caches / Restart
finally have done me the favor: File
>Invalidate Caches / Restart...
>Invalidate and Restart
You could use pandas plot as @Bharath suggest:
import seaborn as sns
sns.set()
df.set_index('App').T.plot(kind='bar', stacked=True)
Output:
Updated:
from matplotlib.colors import ListedColormap
df.set_index('App')\
.reindex_axis(df.set_index('App').sum().sort_values().index, axis=1)\
.T.plot(kind='bar', stacked=True,
colormap=ListedColormap(sns.color_palette("GnBu", 10)),
figsize=(12,6))
Updated Pandas 0.21.0+ reindex_axis
is deprecated, use reindex
from matplotlib.colors import ListedColormap
df.set_index('App')\
.reindex(df.set_index('App').sum().sort_values().index, axis=1)\
.T.plot(kind='bar', stacked=True,
colormap=ListedColormap(sns.color_palette("GnBu", 10)),
figsize=(12,6))
Output:
If you are doing a loading screen, just set the parameter to not keep it in activity stack. In your manifest.xml, where you define your activity do:
<activity android:name=".LoadingScreen" android:noHistory="true" ... />
And in your code there is no need to call .finish() anymore. Just do startActivity(i);
There is also no need to keep a instance of your current activity in a separate field. You can always access it like LoadingScreen.this.doSomething()
instead of private LoadingScreen loadingScreen;
hashCode()
method is not for providing a unique identifier for an object. It rather digests the object's state (i.e. values of member fields) to a single integer. This value is mostly used by some hash based data structures like maps and sets to effectively store and retrieve objects.
If you need an identifier for your objects, I recommend you to add your own method instead of overriding hashCode
. For this purpose, you can create a base interface (or an abstract class) like below.
public interface IdentifiedObject<I> {
I getId();
}
Example usage:
public class User implements IdentifiedObject<Integer> {
private Integer studentId;
public User(Integer studentId) {
this.studentId = studentId;
}
@Override
public Integer getId() {
return studentId;
}
}
Here is another solution: Force HTML5 youtube video
Just add ?html5=1 to the source attribute on the iframe, like this:
<iframe src="http://www.youtube.com/embed/dP15zlyra3c?html5=1"></iframe>
There's a workaround for those who want to use Chrome. This extension allows you to request any site with AJAX from any source, since it adds 'Access-Control-Allow-Origin: *'
header to the response.
As an alternative, you can add this argument to your Chrome launcher: --disable-web-security
. Note that I'd only use this for development purposes, not for normal "web surfing". For reference see Run Chromium with Flags.
As a final note, by installing the extension mentioned on the first paragraph, you can easily enable/disable CORS.
Windows 7 suggested to "Uninstall using recommended settings" after hitting OK in the error message. It solved the problem.
This is the Best of all methods i came across
Clone just the repository's .git folder (excluding files as they are already in existing-dir
) into an empty temporary directory
git clone --no-checkout repo-path-to-clone existing-dir/existing-dir.tmp
//might want --no-hardlinks for cloning local repoMove the .git folder to the directory with the files.
This makes existing-dir
a git repo.
mv existing-dir/existing-dir.tmp/.git existing-dir/
Delete the temporary directory
rmdir existing-dir/existing-dir.tmp
cd existing-dir
Git thinks all files are deleted, this reverts the state of the repo to HEAD.
WARNING: any local changes to the files will be lost.
git reset --mixed HEAD
It sounds like you want to use this web application as a remote control for your robot, and a core issue is that you won't want a page reload every time you perform an action, in which case, the last link you posted answers your problem.
I think you may be misunderstanding a few things about Flask. For one, you can't nest multiple functions in a single route. You're not making a set of functions available for a particular route, you're defining the one specific thing the server will do when that route is called.
With that in mind, you would be able to solve your problem with a page reload by changing your app.py to look more like this:
from flask import Flask, render_template, Response, request, redirect, url_for
app = Flask(__name__)
@app.route("/")
def index():
return render_template('index.html')
@app.route("/forward/", methods=['POST'])
def move_forward():
#Moving forward code
forward_message = "Moving Forward..."
return render_template('index.html', forward_message=forward_message);
Then in your html, use this:
<form action="/forward/" method="post">
<button name="forwardBtn" type="submit">Forward</button>
</form>
...To execute your moving forward code. And include this:
{{ forward_message }}
... where you want the moving forward message to appear on your template.
This will cause your page to reload, which is inevitable without using AJAX and Javascript.
You can make surround the element with a href tags or you can use jquery and use
$('').click(function(e){
e.preventDefault();
//DO SOMETHING
});
Your $_POST array contains the invite array, so reading it out as
<?php
if(isset($_POST['invite'])){
$invite = $_POST['invite'];
echo $invite;
}
?>
won't work since it's an array. You have to loop through the array to get all of the values.
<?php
if(isset($_POST['invite'])){
if (is_array($_POST['invite'])) {
foreach($_POST['invite'] as $value){
echo $value;
}
} else {
$value = $_POST['invite'];
echo $value;
}
}
?>
You can use the spring-boot-starter dependency. This will not have the web stuff.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
This seems to be the simplest regular expression of all that I found
(?:<TAG>)([\s\S]*)(?:<\/TAG>)
(?:<TAG>)
from the matches([\s\S]*)
in the matches(?:<\/TAG>)
from the matchesthe easiest way would be to create a font out of the SVG using a service like https://icomoon.io/app/#/select or such. upload your SVG, click "generate font", include font files and css into your side and just use and style it like any other text. I always use it like this because it makes styling much easier.
EDIT: As mentioned in the article commented by @CodeMouse92 icon fonts mess up screen readers (and are possibly bad for SEO). So rather stick to the SVGs.
String.matches
returns whether the whole string matches the regex, not just any substring.
you can use $.param to assign data :
$http({
url: "http://example.appspot.com/rest/app",
method: "POST",
data: $.param({"foo":"bar"})
}).success(function(data, status, headers, config) {
$scope.data = data;
}).error(function(data, status, headers, config) {
$scope.status = status;
});
look at this : AngularJS + ASP.NET Web API Cross-Domain Issue
There are no multi-dimensional arrays in Java, there are, however, arrays of arrays.
Just make an array of however large you want, then for each element make another array however large you want that one to be.
int array[][];
array = new int[10][];
array[0] = new int[9];
array[1] = new int[8];
array[2] = new int[7];
array[3] = new int[6];
array[4] = new int[5];
array[5] = new int[4];
array[6] = new int[3];
array[7] = new int[2];
array[8] = new int[1];
array[9] = new int[0];
Alternatively:
List<Integer>[] array;
array = new List<Integer>[10];
// of you can do "new ArrayList<Integer>(the desired size);" for all of the following
array[0] = new ArrayList<Integer>();
array[1] = new ArrayList<Integer>();
array[2] = new ArrayList<Integer>();
array[3] = new ArrayList<Integer>();
array[4] = new ArrayList<Integer>();
array[5] = new ArrayList<Integer>();
array[6] = new ArrayList<Integer>();
array[7] = new ArrayList<Integer>();
array[8] = new ArrayList<Integer>();
array[9] = new ArrayList<Integer>();
If you have shell access to the server (the question mentions op does not have, but in case you have,) on a debian/ubuntu system
sudo apt-cache policy postgresql
which will output the installed version,
postgresql:
Installed: 9.6+184ubuntu1.1
Candidate: 9.6+184ubuntu1.1
Version table:
*** 9.6+184ubuntu1.1 500
500 http://in.archive.ubuntu.com/ubuntu artful-updates/main amd64 Packages
500 http://in.archive.ubuntu.com/ubuntu artful-updates/main i386 Packages
500 http://security.ubuntu.com/ubuntu artful-security/main amd64 Packages
500 http://security.ubuntu.com/ubuntu artful-security/main i386 Packages
100 /var/lib/dpkg/status
9.6+184ubuntu1 500
500 http://in.archive.ubuntu.com/ubuntu artful/main amd64 Packages
500 http://in.archive.ubuntu.com/ubuntu artful/main i386 Packages
where the Installed: <version>
is the installed postgres package version.
Had the same problem when updating my mac to macOS Catalina, while using pipenv
. Pipenv creates and manages a virtualenv
for you, so the earlier suggestion from @Anoop-Malav is the same, just using pipenv to remove the virtual environment based on the current dir and reset it:
pipenv --rm
pipenv shell # recreate a virtual env with your current Pipfile
Another way to make it work:
echo "mysql-server-5.5 mysql-server/root_password password root" | debconf-set-selections
echo "mysql-server-5.5 mysql-server/root_password_again password root" | debconf-set-selections
apt-get -y install mysql-server-5.5
Note that this simply sets the password to "root". I could not get it to set a blank password using simple quotes ''
, but this solution was sufficient for me.
Based on a solution here.
I don't know why but for me the solution proposed by Marius Stanescu is breaking the specificity of col (a col-md-3 followed by a col-md-4 will take all of the twelve row)
I found another working solution :
.bottom-column
{
display: inline-block;
vertical-align: middle;
float: none;
}
In general, there is no way to know when something on another site has been changed. If the site offers an RSS feed, you should try that. If the site does not offer an RSS feed (or if the RSS feed doesn't include the information you're looking for), then you have to scrape and compare.
Output from subprocess.call()
should only be redirected to files.
You should use subprocess.Popen()
instead. Then you can pass subprocess.PIPE
for the stderr, stdout, and/or stdin parameters and read from the pipes by using the communicate()
method:
from subprocess import Popen, PIPE
p = Popen(['program', 'arg1'], stdin=PIPE, stdout=PIPE, stderr=PIPE)
output, err = p.communicate(b"input data that is passed to subprocess' stdin")
rc = p.returncode
The reasoning is that the file-like object used by subprocess.call()
must have a real file descriptor, and thus implement the fileno()
method. Just using any file-like object won't do the trick.
See here for more info.
Maximum is 2097151, If you try set more error occurred.
How about this option:
docker logs containername >& logs/myFile.log
It will not redirect logs which was asked for in the question, but copy them once to a specific file.
See my article on understanding vertical alignment. There are multiple techniques to accomplish what you want at the end of the discussion.
(Super-short summary: either set the line-height of the child equal to the height of the container, or set positioning on the container and absolutely position the child at top:50%
with margin-top:-YYYpx
, YYY being half the known height of the child.)
Use as variable to cast the Viewbag data to your desired class in view.
@{
IEnumerable<WebApplication1.Models.Person> personlist = ViewBag.data as
IEnumerable<WebApplication1.Models.Person>;
// You may need to write WebApplication.Models.Person where WebApplication.Models is
the namespace name where the Person class is defined. It is required so that view
can know about the class Person.
}
In view write this
<td>
@(personlist.FirstOrDefault().Name)
</td>
For those looking for a Kotlin version, you can use something like this;
private fun telephonyService() {
val telephonyManager = getSystemService(TELEPHONY_SERVICE) as TelephonyManager
val imei = if (android.os.Build.VERSION.SDK_INT >= 26) {
Timber.i("Phone >= 26 IMEI")
telephonyManager.imei
} else {
Timber.i("Phone IMEI < 26")
telephonyManager.deviceId
}
Timber.i("Phone IMEI $imei")
}
NOTE: You must wrap telephonyService()
above with a permission check using checkSelfPermission or whatever method you use.
Also add this permission in the manifest file;
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
use below code it helps you....
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
options.inPurgeable = true;
Bitmap bm = BitmapFactory.decodeFile("your path of image",options);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG,40,baos);
// bitmap object
byteImage_photo = baos.toByteArray();
//generate base64 string of image
String encodedImage =Base64.encodeToString(byteImage_photo,Base64.DEFAULT);
//send this encoded string to server
Disabling 2 factor authentication at github worked for me.
I see that there is a deleted answer that says this, with the deletion reason as "does not answer the question". If it works, then I think it answers the question...
if "ABCD" in "xxxxABCDyyyy":
# whatever
I would rather create a function like TryParse or use T-SQL TRY-CATCH
block to get what you wanted.
ISNUMERIC doesn't always work as intended. The code given before will fail if you do:
SET @text = '$'
$ sign can be converted to money datatype, so ISNUMERIC()
returns true in that case. It will do the same for '-' (minus), ',' (comma) and '.' characters.
If the characters you want to remove are always the same characters, then consider chomp
:
'abc123'.chomp('123') # => "abc"
The advantages of chomp
are: no counting, and the code more clearly communicates what it is doing.
With no arguments, chomp
removes the DOS or Unix line ending, if either is present:
"abc\n".chomp # => "abc"
"abc\r\n".chomp # => "abc"
From the comments, there was a question of the speed of using #chomp
versus using a range. Here is a benchmark comparing the two:
require 'benchmark'
S = 'asdfghjkl'
SL = S.length
T = 10_000
A = 1_000.times.map { |n| "#{n}#{S}" }
GC.disable
Benchmark.bmbm do |x|
x.report('chomp') { T.times { A.each { |s| s.chomp(S) } } }
x.report('range') { T.times { A.each { |s| s[0...-SL] } } }
end
Benchmark Results (using CRuby 2.13p242):
Rehearsal -----------------------------------------
chomp 1.540000 0.040000 1.580000 ( 1.587908)
range 1.810000 0.200000 2.010000 ( 2.011846)
-------------------------------- total: 3.590000sec
user system total real
chomp 1.550000 0.070000 1.620000 ( 1.610362)
range 1.970000 0.170000 2.140000 ( 2.146682)
So chomp is faster than using a range, by ~22%.
As mentioned in the error, the official manual and the comments:
Replace
public function TSStatus($host, $queryPort)
with
public function __construct($host, $queryPort)
Same thing with IIS Express 10.0 after upgrading Windows 7 to Windows 10. Solution: go to IIS and enable all disabled websites and reinstall ASP.NET Core.
Refactor to observe the Law of Demeter
Structure types should, whenever practical, either have all of their state encapsulated in public fields which may independently be set to any values which are valid for their respective type, or else behave as a single unified value which can only bet set via constructor, factory, method, or else by passing an instance of the struct as an explicit ref
parameter to one of its public methods. Contrary to what some people claim, that there's nothing wrong with a struct having public fields, if it is supposed to represent a set of values which may sensibly be either manipulated individually or passed around as a group (e.g. the coordinates of a point). Historically, there have been problems with structures that had public property setters, and a desire to avoid public fields (implying that setters should be used instead) has led some people to suggest that mutable structures should be avoided altogether, but fields do not have the problems that properties had. Indeed, an exposed-field struct is the ideal representation for a loose collection of independent variables, since it is just a loose collection of variables.
In your particular example, however, it appears that the two fields of your struct are probably not supposed to be independent. There are three ways your struct could sensibly be designed:
You could have the only public field be the string, and then have a read-only "helper" property called length
which would report its length if the string is non-null, or return zero if the string is null.
You could have the struct not expose any public fields, property setters, or mutating methods, and have the contents of the only field--a private string--be specified in the object's constructor. As above, length
would be a property that would report the length of the stored string.
You could have the struct not expose any public fields, property setters, or mutating methods, and have two private fields: one for the string and one for the length, both of which would be set in a constructor that takes a string, stores it, measures its length, and stores that. Determining the length of a string is sufficiently fast that it probably wouldn't be worthwhile to compute and cache it, but it might be useful to have a structure that combined a string and its GetHashCode
value.
It's important to be aware of a detail with regard to the third design, however: if non-threadsafe code causes one instance of the structure to be read while another thread is writing to it, that may cause the accidental creation of a struct instance whose field values are inconsistent. The resulting behaviors may be a little different from those that occur when classes are used in non-threadsafe fashion. Any code having anything to do with security must be careful not to assume that structure fields will be in a consistent state, since malicious code--even in a "full trust" enviroment--can easily generate structs whose state is inconsistent if that's what it wants to do.
PS -- If you wish to allow your structure to be initialized using an assignment from a string, I would suggest using an implicit conversion operator and making Length
be a read-only property that returns the length of the underlying string if non-null, or zero if the string is null.
To get rid of the default dropdown arrow use:
-moz-appearance: window;
Better solution :
There is a built in function in NSData
[data base64Encoding]; //iOS < 7.0
[data base64EncodedStringWithOptions:NSDataBase64Encoding76CharacterLineLength]; //iOS >= 7.0
Is old post but can be done like this:
if(!function_exists('strim')) :
function strim($str,$charlist=" ",$option=0){
$return='';
if(is_string($str))
{
// Translate HTML entities
$return = str_replace(" "," ",$str);
$return = strtr($return, array_flip(get_html_translation_table(HTML_ENTITIES, ENT_QUOTES)));
// Choose trim option
switch($option)
{
// Strip whitespace (and other characters) from the begin and end of string
default:
case 0:
$return = trim($return,$charlist);
break;
// Strip whitespace (and other characters) from the begin of string
case 1:
$return = ltrim($return,$charlist);
break;
// Strip whitespace (and other characters) from the end of string
case 2:
$return = rtrim($return,$charlist);
break;
}
}
return $return;
}
endif;
Standard trim() functions can be a problematic when come HTML entities. That's why i wrote "Super Trim" function what is used to handle with this problem and also you can choose is trimming from the begin, end or booth side of string.
net stop <your service> && net start <your service>
No net restart
, unfortunately.
Can you load the GUIDs into a scratch table then do a
... WHERE var IN SELECT guid FROM #scratchtable
For those using ReactJS.Net and getting this error after a publish:
Check the properties of your .jsx files and make sure Build Action
is set to Content
. Those set to None
will not be published. I came upon this solution from this SO answer.
Best way is to use lifecycle rule to delete whole bucket contents. Programmatically you can use following code (PHP) to PUT lifecycle rule.
$expiration = array('Date' => date('U', strtotime('GMT midnight')));
$result = $s3->putBucketLifecycle(array(
'Bucket' => 'bucket-name',
'Rules' => array(
array(
'Expiration' => $expiration,
'ID' => 'rule-name',
'Prefix' => '',
'Status' => 'Enabled',
),
),
));
In above case all the objects will be deleted starting Date - "Today GMT midnight".
You can also specify Days as follows. But with Days it will wait for at least 24 hrs (1 day is minimum) to start deleting the bucket contents.
$expiration = array('Days' => 1);
I think I found a simple solution after a lot of irritation :
if elem in string_list:
counter = 0
elem_pos = []
for i in string_list:
if i == elem:
elem_pos.append(counter)
counter = counter + 1
print(elem_pos)
This prints a list giving you the indexes of a specific element ("elem")
You can get the results by the name of the process using
ps -C chrome -o %cpu,%mem,cmd
the -C
option allows you to use process name without knowing it's pid.
Ricardo's answer is correct, however: sometimes you may find yourself in a situation where the container simply doesn't resize as desired as the browser window changes size, thus not allowing highcharts to resize itself.
This always works:
chart.setSize(width, height, doAnimation =
true);
in your actual resize function to set the height and width
dynamicallyreflow: false
in the highcharts-options and of course set height
and width
explicitly on creation. As we'll be doing our own resize event handling there's no need Highcharts hooks in another one.You have to overwrite the file. In C++:
#include <fstream>
std::ofstream("test.txt", std::ios::out).close();
If you are using gradle with spring boot and spring JPA then add the below dependency in the build.gradle file
dependencies { compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version: '2.1.3.RELEASE'
}
In the case of nested tables, some DBMS require to use an alias like MySQL and Oracle but others do not have such a strict requirement, but still allow to add them to substitute the result of the inner query.
Yet another way to remove an element(s) from a list by index.
a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
# remove the element at index 3
a[3:4] = []
# a is now [0, 1, 2, 4, 5, 6, 7, 8, 9]
# remove the elements from index 3 to index 6
a[3:7] = []
# a is now [0, 1, 2, 7, 8, 9]
a[x:y] points to the elements from index x
to y-1
. When we declare that portion of the list as an empty list ([]
), those elements are removed.
I think you need to define an object and then push in array
var obj = {};
obj[name] = val;
ary.push(obj);
function resize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
render();
}
window.addEventListener('resize', resize, false); resize();
function render() { // draw to screen here
}
try this code I think it is more optimal.
HeaderRow is used to repeat the header of the table for each new page automatically
BaseFont bfTimes = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, false);
iTextSharp.text.Font times = new iTextSharp.text.Font(bfTimes, 6, iTextSharp.text.Font.NORMAL, iTextSharp.text.BaseColor.BLACK);
PdfPTable table = new PdfPTable(10) { HorizontalAlignment = Element.ALIGN_CENTER, WidthPercentage = 100, HeaderRows = 2 };
table.SetWidths(new float[] { 2f, 6f, 6f, 3f, 5f, 8f, 5f, 5f, 5f, 5f });
table.AddCell(new PdfPCell(new Phrase("SER.\nNO.", times)) { Rowspan = 2, GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("TYPE OF SHIPPING", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("ORDER NO.", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("QTY.", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("DISCHARGE PPORT", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("DESCRIPTION OF GOODS", times)) { Rowspan = 2, GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("LINE DOC. RECL DATE", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("CLEARANCE DATE", times)) { Rowspan = 2, GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("CUSTOM PERMIT NO.", times)) { Rowspan = 2, GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("DISPATCH DATE", times)) { Rowspan = 2, GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("AWB/BL NO.", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("COMPLEX NAME", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("G. W. Kgs.", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("DESTINATION", times)) { GrayFill = 0.95f });
table.AddCell(new PdfPCell(new Phrase("OWNER DOC. RECL DATE", times)) { GrayFill = 0.95f });
You could install forever using npm like this:
sudo npm install -g forever
And then start your application with:
forever server.js
Or as a service:
forever start server.js
Forever restarts your app when it crashes or stops for some reason. To restrict restarts to 5 you could use:
forever -m5 server.js
To list all running processes:
forever list
Note the integer in the brackets and use it as following to stop a process:
forever stop 0
Restarting a running process goes:
forever restart 0
If you're working on your application file, you can use the -w
parameter to restart automatically whenever your server.js
file changes:
forever -w server.js
In some cases the checkbox may be selected by default. If you want to restore default selection rather than set as unselected, compare the defaultChecked
property.
$(':checkbox').each(function(i,item){
this.checked = item.defaultChecked;
});
The WHERE
clause is always conceptually applied (the execution plan can do what it wants, obviously) prior to the GROUP BY
. It must come before the GROUP BY
in the query, and acts as a filter before things are SUM
med, which is how most of the answers here work.
You should also be aware of the optional HAVING
clause which must come after the GROUP BY
. This can be used to filter on the resulting properties of groups after GROUP
ing - for instance HAVING SUM(Amount) > 0
When I try to set Base Memory around 4000MB (my pc have 8GB) I get the same error 'VT-x is disabled in the BIOS'. But when I reduce Base Memory to 2500MB it works and error is solved.
"Segmentation fault" means that you tried to access memory that you do not have access to.
The first problem is with your arguments of main
. The main
function should be int main(int argc, char *argv[])
, and you should check that argc
is at least 2 before accessing argv[1]
.
Also, since you're passing in a float
to printf
(which, by the way, gets converted to a double
when passing to printf
), you should use the %f
format specifier. The %s
format specifier is for strings ('\0'
-terminated character arrays).
This works for me
/**
* Returns List of the List argument passed to this function with size = chunkSize
*
* @param largeList input list to be portioned
* @param chunkSize maximum size of each partition
* @param <T> Generic type of the List
* @return A list of Lists which is portioned from the original list
*/
public static <T> List<List<T>> chunkList(List<T> list, int chunkSize) {
if (chunkSize <= 0) {
throw new IllegalArgumentException("Invalid chunk size: " + chunkSize);
}
List<List<T>> chunkList = new ArrayList<>(list.size() / chunkSize);
for (int i = 0; i < list.size(); i += chunkSize) {
chunkList.add(list.subList(i, i + chunkSize >= list.size() ? list.size()-1 : i + chunkSize));
}
return chunkList;
}
Eg :
List<Integer> stringList = new ArrayList<>();
stringList.add(0);
stringList.add(1);
stringList.add(2);
stringList.add(3);
stringList.add(4);
stringList.add(5);
stringList.add(6);
stringList.add(7);
stringList.add(8);
stringList.add(9);
List<List<Integer>> chunkList = getChunkList1(stringList, 2);
you can try this:"Filename.txt" file will be created automatically in the bin->debug folder everytime you run this code or you can specify path of the file like: @"C:/...". you can check ëxistance of "Hello" by going to the bin -->debug folder
P.S dont forget to add Console.Readline() after this code snippet else console will not appear.
TextWriter tw = new StreamWriter("filename.txt");
String text = "Hello";
tw.WriteLine(text);
tw.Close();
TextReader tr = new StreamReader("filename.txt");
Console.WriteLine(tr.ReadLine());
tr.Close();
position: absolute
will position the element by coordinates, relative to the closest positioned ancestor, i.e. the closest parent which isn't position: static
.
Have your four divs nested inside the target div, give the target div position: relative
, and use position: absolute
on the others.
Structure your HTML similar to this:
<div id="container">
<div class="top left"></div>
<div class="top right"></div>
<div class="bottom left"></div>
<div class="bottom right"></div>
</div>
And this CSS should work:
#container {
position: relative;
}
#container > * {
position: absolute;
}
.left {
left: 0;
}
.right {
right: 0;
}
.top {
top: 0;
}
.bottom {
bottom: 0;
}
...
This is how I solved it. I forgot that sublist was a direct reference to the elements in the original list, so it makes sense why it wouldn't work.
ArrayList<Integer> inputA = new ArrayList<Integer>(input.subList(0, input.size()/2));
Insert an item in the beginning of an associative array with string/custom key
<?php
$array = ['keyOne'=>'valueOne', 'keyTwo'=>'valueTwo'];
$array = array_reverse($array);
$array['newKey'] = 'newValue';
$array = array_reverse($array);
RESULT
[
'newKey' => 'newValue',
'keyOne' => 'valueOne',
'keyTwo' => 'valueTwo'
]
Just to add into alread given answers, the following worked for me:
HTML:
<div id="div{{$index+1}}" data-ng-show="val{{$index}}">
Where $index
is the loop index.
Javascript (where value
is the passed parameter to the function and it will be the value of $index
, current loop index):
var variable = "val"+value;
if ($scope[variable] === undefined)
{
$scope[variable] = true;
}else {
$scope[variable] = !$scope[variable];
}
If you want to add new items from another hash - use merge
method:
hash = {:item1 => 1}
another_hash = {:item2 => 2, :item3 => 3}
hash.merge(another_hash) # {:item1=>1, :item2=>2, :item3=>3}
In your specific case it could be:
hash = {:item1 => 1}
hash.merge({:item2 => 2}) # {:item1=>1, :item2=>2}
but it's not wise to use it when you should to add just one element more.
Pay attention that merge
will replace the values with the existing keys:
hash = {:item1 => 1}
hash.merge({:item1 => 2}) # {:item1=>2}
exactly like hash[:item1] = 2
Also you should pay attention that merge
method (of course) doesn't effect the original value of hash variable - it returns a new merged hash. If you want to replace the value of the hash variable then use merge!
instead:
hash = {:item1 => 1}
hash.merge!({:item2 => 2})
# now hash == {:item1=>1, :item2=>2}
After a lot of surfing, i found out the problem is GC overhead (out of memory). By adding below code to my build.gradle saved my day.
android {
dexOptions {
incremental = true;
preDexLibraries = false
javaMaxHeapSize "4g" // 2g should be also OK
}
}
reference - ProcessException: org.gradle.process.internal.ExecException finished with non-zero exit value 2
You can use the following to set the text from the code:
toggleButton.setText(textOff);
// Sets the text for when the button is first created.
toggleButton.setTextOff(textOff);
// Sets the text for when the button is not in the checked state.
toggleButton.setTextOn(textOn);
// Sets the text for when the button is in the checked state.
To set the text using xml, use the following:
android:textOff="The text for the button when it is not checked."
android:textOn="The text for the button when it is checked."
This information is from here
To access a class method inside a instance method, do the following:
self.class.default_make
Here is an alternative solution for your problem:
class Truck
attr_accessor :make, :year
def self.default_make
"Toyota"
end
def make
@make || self.class.default_make
end
def initialize(make=nil, year=nil)
self.year, self.make = year, make
end
end
Now let's use our class:
t = Truck.new("Honda", 2000)
t.make
# => "Honda"
t.year
# => "2000"
t = Truck.new
t.make
# => "Toyota"
t.year
# => nil
How do time zones factor in this analysis. Does a card expire in New York before California? Does it depend on the billing or shipping addresses?
There is a function called shift()
.
It will remove the first element of your array.
There is some good documentation and examples.
Below code will retrieve all fields other than password within each document:
const users = await UserModel.find({}, {
password: 0
});
console.log(users);
Output
[
{
"_id": "5dd3fb12b40da214026e0658",
"email": "[email protected]"
}
]
Below code will only retrieve email field within each document:
const users = await UserModel.find({}, {
email: 1
});
console.log(users);
Output
[
{
"email": "[email protected]"
}
]
To work around the Mac incompatibility, I came up with
echo `php -r "echo realpath('foo');"`
Not great but cross OS
@Taesung Shin is right, but then just some more magic to make it into a data.frame
.
I added a "x|y" line to avoid ambiguities:
df <- data.frame(ID=11:13, FOO=c('a|b','b|c','x|y'))
foo <- data.frame(do.call('rbind', strsplit(as.character(df$FOO),'|',fixed=TRUE)))
Or, if you want to replace the columns in the existing data.frame:
within(df, FOO<-data.frame(do.call('rbind', strsplit(as.character(FOO), '|', fixed=TRUE))))
Which produces:
ID FOO.X1 FOO.X2
1 11 a b
2 12 b c
3 13 x y
If your issue is with linked servers, you need to look at a few things.
First, your users need to have delegation enabled and if the only thing that's changed, it'l likely they do. Otherwise you can uncheck the "Account is sensitive and cannot be delegated" checkbox is the user properties in AD.
Second, your service account(s) must be trusted for delegation. Since you recently changed your service account I suspect this is the culprit. (http://technet.microsoft.com/en-us/library/cc739474(v=ws.10).aspx)
You mentioned that you might have some SPN issues, so be sure to set the SPN for both endpoints, otherwise you will not be able to see the delegation tab in AD. Also make sure you're in advanced view in "Active Directory Users and Computers."
If you still do not see the delegation tab, even after correcting your SPN, make sure your domain not in 2000 mode. If it is, you can "raise domain function level."
At this point, you can now mark the account as trusted for delegation:
In the details pane, right-click the user you want to be trusted for delegation, and click Properties.
Click the Delegation tab, select the Account is trusted for delegation check box, and then click OK.
Finally you will also need to set all the machines as trusted for delegation.
Once you've done this, reconnect to your sql server and test your liked servers. They should work.
The best way to add PHP pages in WordPress to Page Template
in the child-theme
folder.
How to create Page Template
in WordPress.
Create a file named template-custom.php
and put it in /wp-content/theme/my-theme/
.
<?php
/*
* Template Name: Custom Template
* Custom template used for custom php code display
* @package Portafolio WordPress Theme
* @author Gufran Hasan
* @copyright Copyright templatecustom.com
* @link http://www.templatecustom.com
*/
?>
<?php get_header(); ?>
<?php
//write code here
?>
<?php get_footer(); ?>
USING PHP, HTML AND JAVASCRIPT for prompting
Just if someone looking for using php, html and javascript in a single file, the answer below is working for me.. i attached with the used of bootstrap icon "trash" for the link.
<a class="btn btn-danger" href="<?php echo "delete.php?&var=$var"; ?>" onclick="return confirm('Are you sure want to delete this?');"><span class="glyphicon glyphicon-trash"></span></a>
the reason i used php code in the middle is because i cant use it from the beginning..
the code below doesnt work for me:-
echo "<a class='btn btn-danger' href='delete.php?&var=$var' onclick='return confirm('Are you sure want to delete this?');'><span class='glyphicon glyphicon-trash'></span></a>";
and i modified it as in the 1st code then i run as just what i need.. I hope that can i can help someone inneed of my case.
This works for stdlib on Python 3.2 onwards (assuming all the timestamps are UTC):
from datetime import datetime, timezone, timedelta
datetime.strptime(timestamp, "%Y-%m-%dT%H:%M:%S.%fZ").replace(
tzinfo=timezone(timedelta(0)))
For example,
>>> datetime.utcnow().replace(tzinfo=timezone(timedelta(0)))
... datetime.datetime(2015, 3, 11, 6, 2, 47, 879129, tzinfo=datetime.timezone.utc)
On an belgium keyboard asserted on the mac command + shift + / is the keystroke for commenting out a block.
In contrast to Matt J his answer, I use a simple object. This gives me the possibily to parse this handler to all the threads that needs to be stopped securlery.
class SIGINT_handler():
def __init__(self):
self.SIGINT = False
def signal_handler(self, signal, frame):
print('You pressed Ctrl+C!')
self.SIGINT = True
handler = SIGINT_handler()
signal.signal(signal.SIGINT, handler.signal_handler)
Elsewhere
while True:
# task
if handler.SIGINT:
break
From Android 19, you can register an app life cycle callback in your Application class's onCreate() like this:
@Override
public void onCreate() {
super.onCreate();
registerActivityLifecycleCallbacks(new AppLifecycleCallback());
}
The AppLifecycleCallback looks like this:
class AppLifecycleCallback implements Application.ActivityLifecycleCallbacks {
private int numStarted = 0;
@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
}
@Override
public void onActivityStarted(Activity activity) {
if (numStarted == 0) {
//app went to foreground
}
numStarted++;
}
@Override
public void onActivityResumed(Activity activity) {
}
@Override
public void onActivityPaused(Activity activity) {
}
@Override
public void onActivityStopped(Activity activity) {
numStarted--;
if (numStarted == 0) {
// app went to background
}
}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
}
@Override
public void onActivityDestroyed(Activity activity) {
}
}
To develop the answer of @Caumons:
Imagine one father class has many children and there is a need to add a common field into that class. If you consider the mentioned approach, you should go to each children class one by one and refactor their constructors for the new field. therefore that solution is not a promising solution in this scenario
Now take a look at this solution.
A father can receive an self object from each children. Here is a father class:
public class Father {
protected String fatherField;
public Father(Father a){
fatherField = a.fatherField;
}
//Second constructor
public Father(String fatherField){
this.fatherField = fatherField;
}
//.... Other constructors + Getters and Setters for the Fields
}
Here is our child class that should implement one of its father constructor, in this case the aforementioned constructor :
public class Child extends Father {
protected String childField;
public Child(Father father, String childField ) {
super(father);
this.childField = childField;
}
//.... Other constructors + Getters and Setters for the Fields
@Override
public String toString() {
return String.format("Father Field is: %s\nChild Field is: %s", fatherField, childField);
}
}
Now we test out application:
public class Test {
public static void main(String[] args) {
Father fatherObj = new Father("Father String");
Child child = new Child(fatherObj, "Child String");
System.out.println(child);
}
}
And here is the result :
Father Field is: Father String
Child Field is: Child String
Now you can easily add new fields to father class without being worried of your children codes to break;
Put the line in a stringstream and extract word by word back:
#include <iostream>
#include <sstream>
using namespace std;
int main()
{
string t;
getline(cin,t);
istringstream iss(t);
string word;
while(iss >> word) {
/* do stuff with word */
}
}
Of course, you can just skip the getline part and read word by word from cin
directly.
And here you can read why is using namespace std
considered bad practice.
add HeaderStyle in your bound field:
<asp:BoundField HeaderText="UserId"
DataField="UserId"
SortExpression="UserId">
<HeaderStyle Width="200px" />
</asp:BoundField>
If your emulator x86 this method works your me.
Download and install http://opengapps.org/app/opengapps-app-v16.apk. And select nano pack
More info http://opengapps.org/app/
Working example..
Make sure don't call super.onBackPressed();
@Override
public void onBackPressed() {
Log.d("CDA", "onBackPressed Called");
Intent setIntent = new Intent(Intent.ACTION_MAIN);
setIntent.addCategory(Intent.CATEGORY_HOME);
setIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(setIntent);
}
In this way your Back Button act like Home button . It doesn't finishes your activity but take it to background
Second way is to call moveTaskToBack(true);
in onBackPressed
and be sure to remove super.onBackPressed
Using an example data.frame and example function (just +1 to all values)
A <- function(x) x + 1
wifi <- data.frame(replicate(9,1:4))
wifi
# X1 X2 X3 X4 X5 X6 X7 X8 X9
#1 1 1 1 1 1 1 1 1 1
#2 2 2 2 2 2 2 2 2 2
#3 3 3 3 3 3 3 3 3 3
#4 4 4 4 4 4 4 4 4 4
data.frame(wifi[1:3], apply(wifi[4:9],2, A) )
#or
cbind(wifi[1:3], apply(wifi[4:9],2, A) )
# X1 X2 X3 X4 X5 X6 X7 X8 X9
#1 1 1 1 2 2 2 2 2 2
#2 2 2 2 3 3 3 3 3 3
#3 3 3 3 4 4 4 4 4 4
#4 4 4 4 5 5 5 5 5 5
Or even:
data.frame(wifi[1:3], lapply(wifi[4:9], A) )
#or
cbind(wifi[1:3], lapply(wifi[4:9], A) )
# X1 X2 X3 X4 X5 X6 X7 X8 X9
#1 1 1 1 2 2 2 2 2 2
#2 2 2 2 3 3 3 3 3 3
#3 3 3 3 4 4 4 4 4 4
#4 4 4 4 5 5 5 5 5 5
It looks like request_uri
is deprecated in Ruby on Rails 3.
Using #request_uri is deprecated. Use fullpath instead.
You can also use your own timing mechanisms if you want a little more control, but possibly less accuracy and more code/complexity, but I would still recommend a timer. Use this though if you need to have control over the actual timing thread:
private void ThreadLoop(object callback)
{
while(true)
{
((Delegate) callback).DynamicInvoke(null);
Thread.Sleep(5000);
}
}
would be your timing thread(modify this to stop when reqiuired, and at whatever time interval you want).
and to use/start you can do:
Thread t = new Thread(new ParameterizedThreadStart(ThreadLoop));
t.Start((Action)CallBack);
Callback is your void parameterless method that you want called at each interval. For example:
private void CallBack()
{
//Do Something.
}
Since this question is getting a lot of views and the tutorial linked in the most voted answer appears to be offline, I took the time to clean up this script.
See it live here: JSFiddle
JavaScript:
(function($) {
var element = $('.follow-scroll'),
originalY = element.offset().top;
// Space between element and top of screen (when scrolling)
var topMargin = 20;
// Should probably be set in CSS; but here just for emphasis
element.css('position', 'relative');
$(window).on('scroll', function(event) {
var scrollTop = $(window).scrollTop();
element.stop(false, false).animate({
top: scrollTop < originalY
? 0
: scrollTop - originalY + topMargin
}, 300);
});
})(jQuery);
tar.gz file is just a tar file that's been gzipped. Both tar and gzip are available for windows.
If you like GUIs (Graphical user interface), 7zip can pack with both tar and gzip.
When you get a value from client make and that a value for example.
var current_text = document.getElementById('user_text').value;
var http = new XMLHttpRequest();
http.onreadystatechange = function () {
if (http.readyState == 4 && http.status == 200 ){
var response = http.responseText;
document.getElementById('server_response').value = response;
console.log(response.value);
}
In the next major version of the library HttpClient
interface is going to extend Closeable
. Until then it is recommended to use CloseableHttpClient
if compatibility with earlier 4.x versions (4.0, 4.1 and 4.2) is not required.
Resize the image to fit the div size.
With CSS3 you can do this:
/* with CSS 3 */
#yourdiv {
background: url('bgimage.jpg') no-repeat;
background-size: 100%;
}
How Do you Stretch a Background Image in a Web Page:
About opacity
#yourdiv {
opacity: 0.4;
filter: alpha(opacity=40); /* For IE8 and earlier */
}
Or look at CSS Image Opacity / Transparency
You're comparing apples to oranges here:
webHttpBinding is the REST-style binding, where you basically just hit a URL and get back a truckload of XML or JSON from the web service
basicHttpBinding and wsHttpBinding are two SOAP-based bindings which is quite different from REST. SOAP has the advantage of having WSDL and XSD to describe the service, its methods, and the data being passed around in great detail (REST doesn't have anything like that - yet). On the other hand, you can't just browse to a wsHttpBinding endpoint with your browser and look at XML - you have to use a SOAP client, e.g. the WcfTestClient or your own app.
So your first decision must be: REST vs. SOAP (or you can expose both types of endpoints from your service - that's possible, too).
Then, between basicHttpBinding and wsHttpBinding, there differences are as follows:
basicHttpBinding is the very basic binding - SOAP 1.1, not much in terms of security, not much else in terms of features - but compatible to just about any SOAP client out there --> great for interoperability, weak on features and security
wsHttpBinding is the full-blown binding, which supports a ton of WS-* features and standards - it has lots more security features, you can use sessionful connections, you can use reliable messaging, you can use transactional control - just a lot more stuff, but wsHttpBinding is also a lot *heavier" and adds a lot of overhead to your messages as they travel across the network
For an in-depth comparison (including a table and code examples) between the two check out this codeproject article: Differences between BasicHttpBinding and WsHttpBinding
Preventing XSS is a different issue from validating input.
Regarding XSS: You should not try to check input for XSS or related exploits. You should prevent XSS exploits, SQL injection and so on by escaping correctly when inserting strings into a different language where some characters are "magic", eg, when inserting strings in HTML or SQL. For example a name like O'Reilly is perfectly valid input, but could cause a crash or worse if inserted unescaped into SQL. You cannot prevent that kind of problems by validating input.
Validation of user input makes sense to prevent missing or malformed data, eg. a user writing "asdf" in the zip-code field and so on. Wrt. e-mail adresses, the syntax is so complex though, that it doesnt provide much benefit to validate it using a regex. Just check that it contains a "@".
Yes you can. You can even test it:
var i = 0;_x000D_
var timer = setInterval(function() {_x000D_
console.log(++i);_x000D_
if (i === 5) clearInterval(timer);_x000D_
console.log('post-interval'); //this will still run after clearing_x000D_
}, 200);
_x000D_
In this example, this timer clears when i
reaches 5.
Many browsers have changed their security policies to no longer allow reading data directly from file shares or even local resources. You need to either place the files somewhere that your tomcat instance can serve them up and put a "regular" http url in the html you generate. This can be accomplished by either providing a servlet which reads and provides the file putting the file into a directory where tomcat will serve it up as "static" content.
This is usually caused by duplicates in the query specified in USING clause. This probably means that TABLE_A is a parent table and the same ROWID is returned several times.
You could quickly solve the problem by using a DISTINCT in your query (in fact, if 'Y' is a constant value you don't even need to put it in the query).
Assuming your query is correct (don't know your tables) you could do something like this:
MERGE INTO table_1 a
USING
(SELECT distinct ta.ROWID row_id
FROM table_1 a ,table_2 b ,table_3 c
WHERE a.mbr = c.mbr
AND b.head = c.head
AND b.type_of_action <> '6') src
ON ( a.ROWID = src.row_id )
WHEN MATCHED THEN UPDATE SET in_correct = 'Y';
Proxies are classes that are created and loaded at runtime. There is no source code for these classes. I know that you are wondering how you can make them do something if there is no code for them. The answer is that when you create them, you specify an object that implements InvocationHandler
, which defines a method that is invoked when a proxy method is invoked.
You create them by using the call
Proxy.newProxyInstance(classLoader, interfaces, invocationHandler)
The arguments are:
classLoader
. Once the class is generated, it is loaded with this class loader.interfaces
. An array of class objects that must all be interfaces. The resulting proxy implements all of these interfaces.invocationHandler
. This is how your proxy knows what to do when a method is invoked. It is an object that implements InvocationHandler
. When a method from any of the supported interfaces, or hashCode
, equals
, or toString
, is invoked, the method invoke
is invoked on the handler, passing the Method
object for the method to be invoked and the arguments passed.For more on this, see the documentation for the Proxy
class.
Every implementation of a JVM after version 1.3 must support these. They are loaded into the internal data structures of the JVM in an implementation-specific way, but it is guaranteed to work.
we can create nested cte.please see the below cte in example
;with cte_data as
(
Select * from [HumanResources].[Department]
),cte_data1 as
(
Select * from [HumanResources].[Department]
)
select * from cte_data,cte_data1
I see you try to set ylim
but you give bad values. This will change the scale of the plot (like a zoom). For example see this:
par(mfrow=c(2,1))
tN <- table(Ni <- stats::rpois(100, lambda = 5))
r <- barplot(tN, col = rainbow(20),ylim=c(0,50),main='long y-axis')
r <- barplot(tN, col = rainbow(20),main='short y axis')
Another option is to plot without axes and set them manually using axis
and usr
:
require(grDevices) # for colours
par(mfrow=c(1,1))
r <- barplot(tN, col = rainbow(20),main='short y axis',ann=FALSE,axes=FALSE)
usr <- par("usr")
par(usr=c(usr[1:2], 0, 20))
axis(2,at=seq(0,20,5))
If you were to hardcode it you would use modulus to extract the time as others suggested.
If you are returning the seconds from MySQL database, assuming you don't need the data in seconds format in your app, there is a much cleaner way to do it, you can use MySQL's SEC_TO_TIME and it will return time in hh:mm:ss format.
Eg.
SELECT SEC_TO_TIME(my_seconds_field) AS my_timestring;
I had this exact problem and nothing seemed to work. After clearing the browser cache countless times and even updating IE to v9 I found this: http://favicon.htmlkit.com/favicon/
The above link solved the problem perfectly for me!
Unique device ID of Android OS Device as String.
String deviceId;
final TelephonyManager mTelephony = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
if (mTelephony.getDeviceId() != null){
deviceId = mTelephony.getDeviceId();
}
else{
deviceId = Secure.getString(getApplicationContext().getContentResolver(), Secure.ANDROID_ID);
}
but I strngly recommend this method suggested by Google::
Try this:
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let indexPath = tableView.indexPathForSelectedRow() //optional, to get from any UIButton for example
let currentCell = tableView.cellForRowAtIndexPath(indexPath) as UITableViewCell
print(currentCell.textLabel!.text)
Bootstrap 2.3.2
<ul class="inline">
<li>...</li>
</ul>
Bootstrap 3
<ul class="list-inline">
<li>...</li>
</ul>
Bootstrap 4
<ul class="list-inline">
<li class="list-inline-item">Lorem ipsum</li>
<li class="list-inline-item">Phasellus iaculis</li>
<li class="list-inline-item">Nulla volutpat</li>
</ul>
source: http://v4-alpha.getbootstrap.com/content/typography/#inline
Updated link https://getbootstrap.com/docs/4.4/content/typography/#inline
Please try this ... hope it helps
JSONObject jsonObj1=null;
JSONObject jsonObj2=null;
JSONArray array=new JSONArray();
JSONArray array2=new JSONArray();
jsonObj1=new JSONObject();
jsonObj2=new JSONObject();
array.put(new JSONObject().put("firstName", "John").put("lastName","Doe"))
.put(new JSONObject().put("firstName", "Anna").put("v", "Smith"))
.put(new JSONObject().put("firstName", "Peter").put("v", "Jones"));
array2.put(new JSONObject().put("firstName", "John").put("lastName","Doe"))
.put(new JSONObject().put("firstName", "Anna").put("v", "Smith"))
.put(new JSONObject().put("firstName", "Peter").put("v", "Jones"));
jsonObj1.put("employees", array);
jsonObj1.put("manager", array2);
Response response = null;
response = Response.status(Status.OK).entity(jsonObj1.toString()).build();
return response;
It might be help someone. Similar example.
This is our Codable
class to bind data. You can easily create this class using SwiftyJsonAccelerator
class ModelPushNotificationFilesFile: Codable {
enum CodingKeys: String, CodingKey {
case url
case id
case fileExtension = "file_extension"
case name
}
var url: String?
var id: Int?
var fileExtension: String?
var name: String?
init (url: String?, id: Int?, fileExtension: String?, name: String?) {
self.url = url
self.id = id
self.fileExtension = fileExtension
self.name = name
}
required init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
url = try container.decodeIfPresent(String.self, forKey: .url)
id = try container.decodeIfPresent(Int.self, forKey: .id)
fileExtension = try container.decodeIfPresent(String.self, forKey: .fileExtension)
name = try container.decodeIfPresent(String.self, forKey: .name)
}
}
This is Json String
let jsonString = "[{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/tulips.png\"},
{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/arctichare.png\"},
{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/serrano.png\"},
{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/peppers.png\"},
{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/pool.png\"}]"
Here we convert to swift object.
let jsonData = Data(jsonString.utf8)
let decoder = JSONDecoder()
do {
let fileArray = try decoder.decode([ModelPushNotificationFilesFile].self, from: jsonData)
print(fileArray)
print(fileArray[0].url)
} catch {
print(error.localizedDescription)
}
It should be:
context.TableName.AddObject(TableEntityInstance);
Where:
TableName
: the name of the table in the database.TableEntityInstance
: an instance of the table entity class.If your table is Orders
, then:
Order order = new Order();
context.Orders.AddObject(order);
For example:
var id = Guid.NewGuid();
// insert
using (var db = new EfContext("name=EfSample"))
{
var customers = db.Set<Customer>();
customers.Add( new Customer { CustomerId = id, Name = "John Doe" } );
db.SaveChanges();
}
Here is a live example:
public void UpdatePlayerScreen(byte[] imageBytes, string installationKey)
{
var player = (from p in this.ObjectContext.Players where p.InstallationKey == installationKey select p).FirstOrDefault();
var current = (from d in this.ObjectContext.Screenshots where d.PlayerID == player.ID select d).FirstOrDefault();
if (current != null)
{
current.Screen = imageBytes;
current.Refreshed = DateTime.Now;
this.ObjectContext.SaveChanges();
}
else
{
Screenshot screenshot = new Screenshot();
screenshot.ID = Guid.NewGuid();
screenshot.Interval = 1000;
screenshot.IsTurnedOn = true;
screenshot.PlayerID = player.ID;
screenshot.Refreshed = DateTime.Now;
screenshot.Screen = imageBytes;
this.ObjectContext.Screenshots.AddObject(screenshot);
this.ObjectContext.SaveChanges();
}
}
Interestingly array is randomly accessible by the index. And removing randomly an element may impact the indexes of other elements as well.
int remove_element(int*from, int total, int index) {
if((total - index - 1) > 0) {
memmove(from+i, from+i+1, sizeof(int)*(total-index-1));
}
return total-1; // return the new array size
}
Note that memcpy
will not work in this case because of the overlapping memory.
One of the efficient way (better than memory move) to remove one random element is swapping with the last element.
int remove_element(int*from, int total, int index) {
if(index != (total-1))
from[index] = from[total-1];
return total; // **DO NOT DECREASE** the total here
}
But the order is changed after the removal.
Again if the removal is done in loop operation then the reordering may impact processing. Memory move is one expensive alternative to keep the order while removing an array element. Another of the way to keep the order while in a loop is to defer the removal. It can be done by validity array of the same size.
int remove_element(int*from, int total, int*is_valid, int index) {
is_valid[index] = 0;
return total-1; // return the number of elements
}
It will create a sparse array. Finally, the sparse array can be made compact(that contains no two valid elements that contain invalid element between them) by doing some reordering.
int sparse_to_compact(int*arr, int total, int*is_valid) {
int i = 0;
int last = total - 1;
// trim the last invalid elements
for(; last >= 0 && !is_valid[last]; last--); // trim invalid elements from last
// now we keep swapping the invalid with last valid element
for(i=0; i < last; i++) {
if(is_valid[i])
continue;
arr[i] = arr[last]; // swap invalid with the last valid
last--;
for(; last >= 0 && !is_valid[last]; last--); // trim invalid elements
}
return last+1; // return the compact length of the array
}
You can use a standard ASP.NET Panel and then set it's visible property in your code behind.
<asp:Panel ID="Panel1" runat="server" visible="false" />
To show panel in codebehind:
Panel1.Visible = true;
I'm doing something very similar it's generic, no need to compute something specific for your code. Just check the remarks on the code:
In MyUIViewController.h
@interface MyUIViewController: UIViewController <UITableViewDelegate, UITableViewDataSource>
{
UITableView *myTableView;
UITextField *actifText;
}
@property (nonatomic, retain) IBOutlet UITableView *myTableView;
@property (nonatomic, retain) IBOutlet UITextField *actifText;
- (IBAction)textFieldDidBeginEditing:(UITextField *)textField;
- (IBAction)textFieldDidEndEditing:(UITextField *)textField;
-(void) keyboardWillHide:(NSNotification *)note;
-(void) keyboardWillShow:(NSNotification *)note;
@end
In MyUIViewController.m
@implementation MyUIViewController
@synthesize myTableView;
@synthesize actifText;
- (void)viewDidLoad
{
// Register notification when the keyboard will be show
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
// Register notification when the keyboard will be hide
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}
// To be link with your TextField event "Editing Did Begin"
// memoryze the current TextField
- (IBAction)textFieldDidBeginEditing:(UITextField *)textField
{
self.actifText = textField;
}
// To be link with your TextField event "Editing Did End"
// release current TextField
- (IBAction)textFieldDidEndEditing:(UITextField *)textField
{
self.actifText = nil;
}
-(void) keyboardWillShow:(NSNotification *)note
{
// Get the keyboard size
CGRect keyboardBounds;
[[note.userInfo valueForKey:UIKeyboardFrameBeginUserInfoKey] getValue: &keyboardBounds];
// Detect orientation
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
CGRect frame = self.myTableView.frame;
// Start animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.3f];
// Reduce size of the Table view
if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
frame.size.height -= keyboardBounds.size.height;
else
frame.size.height -= keyboardBounds.size.width;
// Apply new size of table view
self.myTableView.frame = frame;
// Scroll the table view to see the TextField just above the keyboard
if (self.actifText)
{
CGRect textFieldRect = [self.myTableView convertRect:self.actifText.bounds fromView:self.actifText];
[self.myTableView scrollRectToVisible:textFieldRect animated:NO];
}
[UIView commitAnimations];
}
-(void) keyboardWillHide:(NSNotification *)note
{
// Get the keyboard size
CGRect keyboardBounds;
[[note.userInfo valueForKey:UIKeyboardFrameBeginUserInfoKey] getValue: &keyboardBounds];
// Detect orientation
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
CGRect frame = self.myTableView.frame;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.3f];
// Increase size of the Table view
if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
frame.size.height += keyboardBounds.size.height;
else
frame.size.height += keyboardBounds.size.width;
// Apply new size of table view
self.myTableView.frame = frame;
[UIView commitAnimations];
}
@end
class ViewController: UIViewController, UITextFieldDelegate {
@IBOutlet weak var activeText: UITextField!
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
NSNotificationCenter.defaultCenter().addObserver(self,
selector: Selector("keyboardWillShow:"),
name: UIKeyboardWillShowNotification,
object: nil)
NSNotificationCenter.defaultCenter().addObserver(self,
selector: Selector("keyboardWillHide:"),
name: UIKeyboardWillHideNotification,
object: nil)
}
func textFieldDidBeginEditing(textField: UITextField) {
activeText = textField
}
func textFieldDidEndEditing(textField: UITextField) {
activeText = nil
}
func keyboardWillShow(note: NSNotification) {
if let keyboardSize = (note.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
var frame = tableView.frame
UIView.beginAnimations(nil, context: nil)
UIView.setAnimationBeginsFromCurrentState(true)
UIView.setAnimationDuration(0.3)
frame.size.height -= keyboardSize.height
tableView.frame = frame
if activeText != nil {
let rect = tableView.convertRect(activeText.bounds, fromView: activeText)
tableView.scrollRectToVisible(rect, animated: false)
}
UIView.commitAnimations()
}
}
func keyboardWillHide(note: NSNotification) {
if let keyboardSize = (note.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
var frame = tableView.frame
UIView.beginAnimations(nil, context: nil)
UIView.setAnimationBeginsFromCurrentState(true)
UIView.setAnimationDuration(0.3)
frame.size.height += keyboardSize.height
tableView.frame = frame
UIView.commitAnimations()
}
}
}
Selects are slow and unnescsaary. The following code will be far faster:
Sub CopyRowsAcross()
Dim i As Integer
Dim ws1 As Worksheet: Set ws1 = ThisWorkbook.Sheets("Sheet1")
Dim ws2 As Worksheet: Set ws2 = ThisWorkbook.Sheets("Sheet2")
For i = 2 To ws1.Range("B65536").End(xlUp).Row
If ws1.Cells(i, 2) = "Your Critera" Then ws1.Rows(i).Copy ws2.Rows(ws2.Cells(ws2.Rows.Count, 2).End(xlUp).Row + 1)
Next i
End Sub
You should use this:
<Link to={this.props.myroute} onClick={hello}>Here</Link>
Or (if method hello
lays at this class):
<Link to={this.props.myroute} onClick={this.hello}>Here</Link>
Update: For ES6 and latest if you want to bind some param with click method, you can use this:
const someValue = 'some';
....
<Link to={this.props.myroute} onClick={() => hello(someValue)}>Here</Link>