Use this...
$('#cat_icon').click(function () {
$('#categories').toggle("slow");
//$('#cat_icon').hide();
});
$('.panel_title').click(function () {
$('#categories').toggle("slow");
//$('#cat_icon').show();
});
See this Example
Greetings.
This method should do it. It serializes the form data and then converts them to an object. Takes care of groups of checkboxes as well.
function getFormObj(formId) {
var formParams = {};
$('#' + formId)
.serializeArray()
.forEach(function(item) {
if (formParams[item.name]) {
formParams[item.name] = [formParams[item.name]];
formParams[item.name].push(item.value)
} else {
formParams[item.name] = item.value
}
});
return formParams;
}
In Winform App(C#):
static string strFilesLoc = Path.GetFullPath(Path.Combine(Path.GetDirectoryName(Application.ExecutablePath), @"..\..\")) + "Resources\\";
public static string[] GetFontFamily()
{
var result = File.ReadAllText(strFilesLoc + "FontFamily.txt").Trim();
string[] items = result.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
return items;
}
In-text file(FontFamily.txt):
Microsoft Sans Serif
9
true
Try with this code. I hope it's useful for you.
function sleep(seconds)
{
var e = new Date().getTime() + (seconds * 1000);
while (new Date().getTime() <= e) {}
}
Well, a jar-file is just a zip-file, so if you unzip it (with your favorite unzipping utility), you get all the files inside.
If you want to look inside the class files to see the methods, you'll need a tool for that. As PhiLho mentions, Eclipse is able to do that (by default), and I would think most Java IDEs are capable of that.
If you are using Ubuntu 14.04 ffmpeg
is not available. You can install it by using the instructions directly from https://www.ffmpeg.org/download.html.
In short you will have to:
sudo add-apt-repository ppa:mc3man/trusty-media
sudo apt-get update
sudo apt-get install ffmpeg gstreamer0.10-ffmpeg
If this does not work maybe try using sudo apt-get dist-upgrade
but this may broke things in your system.
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<title>Center</title>_x000D_
</head>_x000D_
<body>_x000D_
_x000D_
<div style="text-align: center;">_x000D_
<div style="width: 500px; margin: 0 auto; background: #000; color: #fff;">This DIV is centered</div>_x000D_
</div>_x000D_
_x000D_
</body>_x000D_
</html>
_x000D_
Tested and worked in IE, Firefox, Chrome, Safari and Opera. I did not test IE6. The outer text-align is needed for IE. Other browsers (and IE9?) will work when you give the DIV margin (left and right) value of auto. Margin "0 auto" is a shorthand for margin "0 auto 0 auto" (top right bottom left).
Note: the text is also centered inside the inner DIV, if you want it to remain on the left side just specify text-align: left; for the inner DIV.
Edit: IE 6, 7, 8 and 9 running on the Standards Mode will work with margins set to auto.
Unfortunately there really isn't a set set of escape codes since it varies based on the language you are using.
However, keeping a page like the Regular Expression Tools Page or this Regular Expression Cheatsheet can go a long way to help you quickly filter things out.
Use the _ variable, as I learned when I asked this question, for example:
# A long way to do integer exponentiation
num = 2
power = 3
product = 1
for _ in xrange(power):
product *= num
print product
You can find something about this in the Adobe Developer FAQ. (It's a PDF document rather than a web page, which I guess is unsurprising in this particular case.)
The FAQ notes that the use of the command line switches is unsupported.
To open a file it's:
AcroRd32.exe <filename>
The following switches are available:
/n
- Launch a new instance of Reader even if one is already open/s
- Don't show the splash screen/o
- Don't show the open file dialog/h
- Open as a minimized window/p <filename>
- Open and go straight to the print dialog/t <filename> <printername> <drivername> <portname>
- Print the file the specified printer.Download this Sqlite manager its the easiest one to use Sqlite manager
and drag and drop your fetched file on its running instance
only drawback of this Sqlite Manager it stop responding if you run some SQL statement that has Syntax Error in it.
So i Use Firefox Plugin Side by side also which you can find at FireFox addons
It's actually something that can be done using a combination of the current stack-trace data, and reflection.
public void MyMethod()
{
StackTrace stackTrace = new System.Diagnostics.StackTrace();
StackFrame frame = stackTrace.GetFrames()[1];
MethodInfo method = frame.GetMethod();
string methodName = method.Name;
Type methodsClass = method.DeclaringType;
}
The 1
index on the StackFrame
array will give you the method which called MyMethod
If you don't have any index structures, you'll not get around the reading of the complete file. But you can optimize it by avoiding to read it line by line and use a regex to match all line terminators.
You could add another empty layout below that one and set them both to have the same layout weight. They should get 50% of the space each.
If I use exit()
in a code and run it in the shell, it shows a message asking whether I want to kill the program or not. It's really disturbing.
See here
But sys.exit()
is better in this case. It closes the program and doesn't create any dialogue box.
This one has burned me many times. Arrays.asList
creates an unmodifiable list.
From the Javadoc: Returns a fixed-size list backed by the specified array.
Create a new list with the same content:
newList.addAll(Arrays.asList(newArray));
This will create a little extra garbage, but you will be able to mutate it.
SQL ad hoc query abilities are enough of a reason for me. With a good schema and indexing on the tables, this is fast and effective and will have good performance.
#Server Connection to MySQL:
import MySQLdb
conn = MySQLdb.connect(host= "localhost",
user="root",
passwd="newpassword",
db="engy1")
x = conn.cursor()
try:
x.execute("""INSERT INTO anooog1 VALUES (%s,%s)""",(188,90))
conn.commit()
except:
conn.rollback()
conn.close()
edit working for me:
>>> import MySQLdb
>>> #connect to db
... db = MySQLdb.connect("localhost","root","password","testdb" )
>>>
>>> #setup cursor
... cursor = db.cursor()
>>>
>>> #create anooog1 table
... cursor.execute("DROP TABLE IF EXISTS anooog1")
__main__:2: Warning: Unknown table 'anooog1'
0L
>>>
>>> sql = """CREATE TABLE anooog1 (
... COL1 INT,
... COL2 INT )"""
>>> cursor.execute(sql)
0L
>>>
>>> #insert to table
... try:
... cursor.execute("""INSERT INTO anooog1 VALUES (%s,%s)""",(188,90))
... db.commit()
... except:
... db.rollback()
...
1L
>>> #show table
... cursor.execute("""SELECT * FROM anooog1;""")
1L
>>> print cursor.fetchall()
((188L, 90L),)
>>>
>>> db.close()
table in mysql;
mysql> use testdb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> SELECT * FROM anooog1;
+------+------+
| COL1 | COL2 |
+------+------+
| 188 | 90 |
+------+------+
1 row in set (0.00 sec)
mysql>
For hide:
$("#id").css("display", "none");
For show:
$("#id").css("display", "");
I would write :
var handleData = function (data) {
alert(data);
//do some stuff
}
function getData() {
$.ajax({
url : 'example.com',
type: 'GET',
success : handleData
})
}
A couple of suggestions:
.animate
method, like .animate({width: maxWidth})
, it should scale the other dimension for you automatically.You can use:
$('#table').dataTable().fnClearTable();
$('#table').dataTable().fnAddData(myData2);
Update. And yes current documentation is not so good but if you are okay using older versions you can refer legacy documentation.
public class Splash extends Activity {
private final int SPLASH_DISPLAY_LENGHT = 3000; //set your time here......
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
new Handler().postDelayed(new Runnable(){
@Override
public void run() {
/* Create an Intent that will start the Menu-Activity. */
Intent mainIntent = new Intent(Splash.this,MainActivity.class);
Splash.this.startActivity(mainIntent);
Splash.this.finish();
}
}, SPLASH_DISPLAY_LENGHT);
}
}
Use usort:
usort($array, function($a1, $a2) {
$v1 = strtotime($a1['date']);
$v2 = strtotime($a2['date']);
return $v1 - $v2; // $v2 - $v1 to reverse direction
});
I'll add a bit hint: it seems what you pass as the key value of a header depends on your authorization type, in my case that was PRIVATE-TOKEN
header = {'PRIVATE-TOKEN': 'my_token'}
response = requests.get(myUrl, headers=header)
Depending on what you're trying to do, you can either block with GetIdList().Result ( generally a bad idea, but it's hard to tell the context) or use a test framework that supports async test methods and have the test method do var results = await GetIdList();
You have provided wrong order for JAVASCRIPT and BOOTSTRAP
by convention bootstrap must follow jquery file definition
<!-- JQuery Core JavaScript -->
<script src="lib/js/jquery.min.js"></script>
<script src="lib/js/jquery-ui.min.js"></script>
<!-- Bootstrap Core JavaScript -->
<script src="lib/js/bootstrap.min.js"></script>
You need to call format() function to get the formatted value
$scope.SearchDate = moment(new Date()).format("DD/MM/YYYY")
//or $scope.SearchDate = moment().format("DD/MM/YYYY")
The syntax you have used is used to parse a given string to date object by using the specified formate
Taking advantage of Matt Fenwick's idea that helped me to solve the problem (a lot of thanks), let's reduce it to only one query:
select
history.*,
coalesce(sum(case when itemname = "A" then itemvalue end), 0) as A,
coalesce(sum(case when itemname = "B" then itemvalue end), 0) as B,
coalesce(sum(case when itemname = "C" then itemvalue end), 0) as C
from history
group by hostid
$ cat foo.md
Key 1 | Value 1
Key 2 | Value 2
$ kramdown foo.md
<table>
<tbody>
<tr>
<td>Key 1</td>
<td>Value 1</td>
</tr>
<tr>
<td>Key 2</td>
<td>Value 2</td>
</tr>
</tbody>
</table>
here's another way
import numpy as np
set(np.concatenate(df.values))
At the first site is a dropdown field to select the language of phpmyadmin.
In the config.inc.php you can set:
$cfg['Lang'] = '';
More details you can find in the documentation: http://www.phpmyadmin.net/documentation/
Go offline
USE master
GO
ALTER DATABASE YourDatabaseName
SET OFFLINE WITH ROLLBACK IMMEDIATE
GO
Go online
USE master
GO
ALTER DATABASE YourDatabaseName
SET ONLINE
GO
Simple. In the print, do:
print(foobar.__dict__)
as long as the constructor is
__init__
In similar situations, I've done well by putting something like the following into /etc/rc.local:
cd /path/to/my/script
./my_script.py &
cd -
echo `date +%Y-%b-%d_%H:%M:%S` > /tmp/ran_rc_local # check that rc.local ran
This has worked on multiple versions of Fedora and on Ubuntu 14.04 LTS, for both python and perl scripts.
The shortcut to comment out or uncomment the selected text or current line:
Alternatively, use the menu: Edit > Comment
For the block comment you may want to use:
in your code add:
System.getProperty("WSNSHELL_HOME")
Modify or add value property from maven command:
mvn clean test -DargLine=-DWSNSHELL_HOME=yourvalue
If you want to run it in Eclipse, add VM arguments in your Debug/Run configurations
-DWSNSHELL_HOME=yourvalue
you don't need to modify the POM
DECLARE @first AS INT = 1
DECLARE @last AS INT = 300
WHILE(@first <= @last)
BEGIN
INSERT INTO tblFoo VALUES(@first)
SET @first += 1
END
Use this XPath expression:
/*/*/X/node()
This selects any node (element, text node, comment or processing instruction) that is a child of any X
element that is a grand-child of the top element of the XML document.
To verify what is selected, here is this XSLT transformation that outputs exactly the selected nodes:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes"/>
<xsl:template match="/">
<xsl:copy-of select="/*/*/X/node()"/>
</xsl:template>
</xsl:stylesheet>
and it produces exactly the wanted, correct result:
First Text Node #1
<y> Y can Have Child Nodes #
<child> deep to it </child>
</y> Second Text Node #2
<z />
Explanation:
As defined in the W3 XPath 1.0 Spec, "child::node()
selects all the children of the context node, whatever their node type." This means that any element, text-node, comment-node and processing-instruction node children are selected by this node-test.
node()
is an abbreviation of child::node()
(because child::
is the primary axis and is used when no axis is explicitly specified).
This is the VB.net version which works fine for me ported from the C code in BlaM's post.
There's a C implementation here:
http://www.cs.rit.edu/~ncs/color/t_convert.html
Should be very straightforward to convert to C#, as almost no functions are called - just > calculations.
Public Sub HSVtoRGB(ByRef r As Double, ByRef g As Double, ByRef b As Double, ByVal h As Double, ByVal s As Double, ByVal v As Double)
Dim i As Integer
Dim f, p, q, t As Double
If (s = 0) Then
' achromatic (grey)
r = v
g = v
b = v
Exit Sub
End If
h /= 60 'sector 0 to 5
i = Math.Floor(h)
f = h - i 'factorial part of h
p = v * (1 - s)
q = v * (1 - s * f)
t = v * (1 - s * (1 - f))
Select Case (i)
Case 0
r = v
g = t
b = p
Exit Select
Case 1
r = q
g = v
b = p
Exit Select
Case 2
r = p
g = v
b = t
Exit Select
Case 3
r = p
g = q
b = v
Exit Select
Case 4
r = t
g = p
b = v
Exit Select
Case Else 'case 5:
r = v
g = p
b = q
Exit Select
End Select
End Sub
im
is "image process name"
example /f /im notepad.exe
is specified to kill image process name (program) notepad.exe
var mapped = _.reduce({ one: 1, two: 2, three: 3 }, function(obj, val, key) {_x000D_
obj[key] = val*3;_x000D_
return obj;_x000D_
}, {});_x000D_
_x000D_
console.log(mapped);
_x000D_
<script src="http://underscorejs.org/underscore-min.js"></script>_x000D_
<script src="https://getfirebug.com/firebug-lite-debug.js"></script>
_x000D_
Using __doPostBack
directly is sooooo the 2000s. Anybody coding WebForms in 2018 uses GetPostBackEventReference
(More seriously though, adding this as an answer for completeness. Using the __doPostBack
directly is bad practice (single underscore prefix typically indicates a private member and double indicates a more universal private member), though it probably won't change or become obsolete at this point. We have a fully supported mechanism in ClientScriptManager.GetPostBackEventReference.)
Assuming your btnRefresh is inside our UpdatePanel and causes a postback, you can use GetPostBackEventReference like this (inspiration):
function RefreshGrid() {
<%= ClientScript.GetPostBackEventReference(btnRefresh, String.Empty) %>;
}
If you're registering a domain and the termination (ex .com
) it is not IDN, as Aaron Hathaway said:
Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, en.wikipedia.org
is a hostname. Each label must be between 1 and 63 characters long, and the entire hostname (including the delimiting dots but not a trailing dot) has a maximum of 253 ASCII characters.
The Internet standards (Requests for Comments) for protocols mandate that component hostname labels may contain only the ASCII letters a
through z
(in a case-insensitive manner), the digits 0
through 9
, and the hyphen -
. The original specification of hostnames in RFC 952, mandated that labels could not start with a digit or with a hyphen, and must not end with a hyphen. However, a subsequent specification (RFC 1123) permitted hostname labels to start with digits. No other symbols, punctuation characters, or white space are permitted.
Later, Spain with it's .es
, .com.es
, .org.es
, .nom,es
, .gob.es
and .edu.es
introduced IDN tlds, if your tld is one of .es
or any other that supports it, any character can be used, but you can't combine alphabets like Latin, Greek or Cyril in one hostname, and that it respects the things that can't go at the start or at the end.
If you're using non-registered tlds, just for local networking, like with local DNS or with hosts files, you can treat them all as IDN.
Keep in mind some programs could not work well, especially old, outdated and unpopular ones.
I agree with japollock way up there--throw an acception when you are uncertain about the outcome of an operation. Calls to APIs, accessing filesystems, database calls, etc. Anytime you are moving past the "boundaries" of your programming languages.
I'd like to add, feel free to throw a standard exception. Unless you are going to do something "different" (ignore, email, log, show that twitter whale picture thingy, etc), then don't bother with custom exceptions.
I got the same error while following an old tutorial with (not old enough) AngularJS 1.4.3. By far the simplest solution is to edit angular.js source from
function $ControllerProvider() {
var controllers = {},
globals = false;
to
function $ControllerProvider() {
var controllers = {},
globals = true;
and just follow the tutorial as-is, and the deprecated global functions just work as controllers.
Middleware is about how our application responds to incoming requests. Middlewares look into the incoming request, and make decisions based on this request. We can build entire applications only using middlewares. For e.g. ASP.NET is a web framework comprising of following chief HTTP middleware components.
As shown in the above diagram, there are various middleware components in ASP.NET which receive the incoming request, and redirect it to a C# class (in this case a controller class).
If you updated Internet Explorer and began having technical problems, you can use the Compatibility View feature to emulate a previous version of Internet Explorer.
For instructions, see the section below that corresponds with your version. To find your version number, click Help > About Internet Explorer. Internet Explorer 11
To edit the Compatibility View list:
Open the desktop, and then tap or click the Internet Explorer icon on the taskbar.
Tap or click the Tools button (Image), and then tap or click Compatibility View settings.
To remove a website:
Click the website(s) where you would like to turn off Compatibility View, clicking Remove after each one.
To add a website:
Under Add this website, enter the website(s) where you would like to turn on Compatibility View, clicking Add after each one.
Copy the files to the default directory for your other database files. To find out what that is, you can use the sp_helpfile procedure in SSMS. On my machine it is: C:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\DATA
. By copying the files to this directory, they automatically get permissions applied that will allow the attach to succeed.
Here is a very good explanation :
For simplicity, you can create a Jenkinsfile at the root of the git repository, similar to the below example 'Jenkinsfile' based on the groovy syntax of the declarative pipeline.
pipeline {
agent any
stages {
stage('Build the Project') {
steps {
git 'https://github.com/jaikrgupta/CarthageAPI-1.0.git'
echo pwd()
sh 'ls -alrt'
sh 'pip install -r requirements.txt'
sh 'python app.py &'
echo "Build stage gets finished here"
}
}
stage('Test') {
steps {
sh 'chmod 777 ./scripts/test-script.sh'
sh './scripts/test-script.sh'
sh 'cat ./test-reports/test_script.log'
echo "Test stage gets finished here"
}
}
}
https://github.com/jaikrgupta/CarthageAPI-1.0.git
You can now set up a new item in Jenkins as a Pipeline job. Select the
Definition
asPipeline script from SCM
andGit
for theSCM
option. Paste the project's git repo link in the Repository URL andJenkinsfile
in the script name box. Then click on thelightweight checkout
option and save the project. So whenever you pushed a commit to the git repo, you can always test the changes running theBuild Now
every time in Jenkins.
Please follow the instructions in the below visuals for easy setup a Jenkins Pipeline's job.
df.groupby(['companyName'])['overallRating'].sum().sort_values(ascending=False).head(20)
First, the second is not equivalent to the other two. $#array
returns the last index of the array, which is one less than the size of the array.
The other two are virtually the same. You are simply using two different means to create scalar context. It comes down to a question of readability.
I personally prefer the following:
say 0+@array; # Represent @array as a number
I find it clearer than
say scalar(@array); # Represent @array as a scalar
and
my $size = @array;
say $size;
The latter looks quite clear alone like this, but I find that the extra line takes away from clarity when part of other code. It's useful for teaching what @array
does in scalar context, and maybe if you want to use $size
more than once.
I am currently developing an web application with EF Core and here is the pattern I use:
All my classes (tables) have an int
PK and FK.
I then have an additional column of type Guid
(generated by the C# constructor) with a non clustered index on it.
All the joins of tables within EF are managed through the int
keys while all the access from outside (controllers) are done with the Guid
s.
This solution allows to not show the int
keys on URLs but keep the model tidy and fast.
This has been an old question but solution is very simple to that. If you are ever unsure about how to write criterias, joins etc in hibernate then best way is using native queries. This doesn't slow the performance and very useful. Eq. below
@Query(nativeQuery = true, value = "your sql query")
returnTypeOfMethod methodName(arg1, arg2);
Microsoft has listened to the cry for supporting installers (MSI) in Visual Studio and release the Visual Studio Installer Projects Extension. You can now create installers in VS2013, download the extension here from the visualstudiogallery.
See query:
SELECT * FROM Table1 WHERE
id NOT IN (SELECT
e.id
FROM
Table1 e
INNER JOIN
Table2 s ON e.id = s.id);
Conceptually would be: Fetching the matching records in subquery and then in main query fetching the records which are not in subquery.
To skip the test case during maven clean install i used -DskipTests paramater in following command
mvn clean install -DskipTests
into terminal window
It's surprising to see that nobody mentioned the native JS way to do this..
Just access the children
property of the parent element. It will return a live HTMLCollection of children elements which can be accessed by an index. If you want to get the second child:
parentElement.children[1];
In your case, something like this could work: (example)
var secondChild = document.querySelector('.parent').children[1];
console.log(secondChild); // <td>element two</td>
<table>
<tr class="parent">
<td>element one</td>
<td>element two</td>
</tr>
</table>
You can also use a combination of CSS3 selectors / querySelector()
and utilize :nth-of-type()
. This method may work better in some cases, because you can also specifiy the element type, in this case td:nth-of-type(2)
(example)
var secondChild = document.querySelector('.parent > td:nth-of-type(2)');
console.log(secondChild); // <td>element two</td>
"-123.456e-789" -match "^\-?(\d+\.?\d*)(e\-?\d+)?$|^0x[0-9a-f]+$"
or
"0xab789" -match "^\-?(\d+\.?\d*)(e\-?\d+)?$|^0x[0-9a-f]+$"
will check for numbers (integers, floats and hex).
Please note that this does not cover the case of commas/dots being used as separators for thousands.
Try this:
return Redirect("http://www.website.com");
It seems that for full page reload $window.location.href
is the preferred way.
It does not cause a full page reload when the browser URL is changed. To reload the page after changing the URL, use the lower-level API, $window.location.href.
Just go to your AndroidManifest.xml file and add like below
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
then save and run your android project.
This works for me:
$ pip install -r requirements.txt --no-index --find-links file:///tmp/packages
--no-index
- Ignore package index (only looking at --find-links
URLs instead).
-f, --find-links <URL>
- If a URL or path to an HTML file, then parse for links to archives.
If a local path or file://
URL that's a directory, then look for archives in the directory listing.
If you only need it once, it's overkill to load a plugin.
For a date "dd/mm/yyyy", this works for me:
new Date(d.date.substring(6, 10),d.date.substring(3, 5)-1,d.date.substring(0, 2));
Just invert month and day for mm/dd/yyyy, the syntax is
new Date(y,m,d)
you could also do show columns in $table
or see Hive, how do I retrieve all the database's tables columns for access to hive metadata
Try this:
HTML
<div><span>Text</span></div>
CSS
div {
height: 100px;
}
span {
height: 100px;
display: table-cell;
vertical-align: middle;
}
If you have the ID of the div, try this:
<input type='submit' onclick='$("#div_id").show()'>
My sugession is Foxit PDF Reader which is very helpful to do important text editing work on pdf file.
There are a bunch of ways to return multiple parameters. I'm going to be exhastive.
Use reference parameters:
void foo( int& result, int& other_result );
use pointer parameters:
void foo( int* result, int* other_result );
which has the advantage that you have to do a &
at the call-site, possibly alerting people it is an out-parameter.
Write a template and use it:
template<class T>
struct out {
std::function<void(T)> target;
out(T* t):target([t](T&& in){ if (t) *t = std::move(in); }) {}
out(std::optional<T>* t):target([t](T&& in){ if (t) t->emplace(std::move(in)); }) {}
out(std::aligned_storage_t<sizeof(T), alignof(T)>* t):
target([t](T&& in){ ::new( (void*)t ) T(std::move(in)); } ) {}
template<class...Args> // TODO: SFINAE enable_if test
void emplace(Args&&...args) {
target( T(std::forward<Args>(args)...) );
}
template<class X> // TODO: SFINAE enable_if test
void operator=(X&&x){ emplace(std::forward<X>(x)); }
template<class...Args> // TODO: SFINAE enable_if test
void operator()(Args...&&args){ emplace(std::forward<Args>(args)...); }
};
then we can do:
void foo( out<int> result, out<int> other_result )
and all is good. foo
is no longer able to read any value passed in as a bonus.
Other ways of defining a spot you can put data can be used to construct out
. A callback to emplace things somewhere, for example.
We can return a structure:
struct foo_r { int result; int other_result; };
foo_r foo();
whick works ok in every version of C++, and in c++17 this also permits:
auto&&[result, other_result]=foo();
at zero cost. Parameters can even not even be moved thanks to guaranteed elision.
We could return a std::tuple
:
std::tuple<int, int> foo();
which has the downside that parameters are not named. This permits the c++17:
auto&&[result, other_result]=foo();
as well. Prior to c++17 we can instead do:
int result, other_result;
std::tie(result, other_result) = foo();
which is just a bit more awkward. Guaranteed elision doesn't work here, however.
Going into stranger territory (and this is after out<>
!), we can use continuation passing style:
void foo( std::function<void(int result, int other_result)> );
and now callers do:
foo( [&](int result, int other_result) {
/* code */
} );
a benefit of this style is you can return an arbitrary number of values (with uniform type) without having to manage memory:
void get_all_values( std::function<void(int)> value )
the value
callback could be called 500 times when you get_all_values( [&](int value){} )
.
For pure insanity, you could even use a continuation on the continuation.
void foo( std::function<void(int, std::function<void(int)>)> result );
whose use looks like:
foo( [&](int result, auto&& other){ other([&](int other){
/* code */
}) });
which would permit many-one relationships between result
and other
.
Again with uniforn values, we can do this:
void foo( std::function< void(span<int>) > results )
here, we call the callback with a span of results. We can even do this repeatedly.
Using this, you can have a function that efficiently passes megabytes of data without doing any allocation off the stack.
void foo( std::function< void(span<int>) > results ) {
int local_buffer[1024];
std::size_t used = 0;
auto send_data=[&]{
if (!used) return;
results({ local_buffer, used });
used = 0;
};
auto add_datum=[&](int x){
local_buffer[used] = x;
++used;
if (used == 1024) send_data();
};
auto add_data=[&](gsl::span<int const> xs) {
for (auto x:xs) add_datum(x);
};
for (int i = 0; i < 7+(1<<20); ++i) {
add_datum(i);
}
send_data(); // any leftover
}
Now, std::function
is a bit heavy for this, as we would be doing this in zero-overhead no-allocation environments. So we'd want a function_view
that never allocates.
Another solution is:
std::function<void(std::function<void(int result, int other_result)>)> foo(int input);
where instead of taking the callback and invoking it, foo
instead returns a function which takes the callback.
foo(7)([&](int result, int other_result){ /* code */ });
this breaks the output parameters from the input parameters by having separate brackets.
With variant
and c++20 coroutines, you could make foo
a generator of a variant of the return types (or just the return type). The syntax is not yet fixed, so I won't give examples.
In the world of signals and slots, a function that exposes a set of signals:
template<class...Args>
struct broadcaster;
broadcaster<int, int> foo();
allows you to create a foo
that does work async and broadcasts the result when it is finished.
Down this line we have a variety of pipeline techniques, where a function doesn't do something but rather arranges for data to be connected in some way, and the doing is relatively independant.
foo( int_source )( int_dest1, int_dest2 );
then this code doesn't do anything until int_source
has integers to provide it. When it does, int_dest1
and int_dest2
start recieving the results.
Use SimpleDateFormat
class. Take a look on its javadoc: it explains how to use format switches.
Maven organizes its build in projects.
An artifact
in maven is a resource generated by a maven project. Each maven project can have exactly one artifact
like a jar, war, ear
, etc.
The project's configuration file "pom.xml"
describes how the artifact is build, how unit tests are run, etc.
Commonly a software project build with maven consists of many maven-projects that build artifacts (e.g. jars) that constitute the product.
E.g.
Root-Project // produces no artifact, simply triggers the build of the other projects
App-Project // The application, that uses the libraries
Lib1-Project // A project that creates a library (jar)
Lib2-Project // Another library
Doc-Project // A project that generates the user documentation from some resources
Maven artifacts are not limited to java resources. You can generate whatever resource you need. E.g. documentation, project-site, zip-archives, native-libraries, etc.
Each maven project has a unique identifier consiting of [groupId, artifactId, version]
. When a maven project requires resources of another project a dependency is configured in it's pom.xml
using the above-mentioned identifier. Maven then automatically resolves the dependencies when a build is triggered. The artifacts of the required projects are then loaded either from the local repository
, which is a simple directory in your user's home, or from other (remote) repositories specified in you pom.xml
.
In summary:
If you want to develop in java, you need the JDK, but if you just want run java, you need the JRE.
I believe Spring Boot supports loading properties maps out of the box with @ConfigurationProperties annotation.
According that docs you can load properties:
my.servers[0]=dev.bar.com
my.servers[1]=foo.bar.com
into bean like this:
@ConfigurationProperties(prefix="my")
public class Config {
private List<String> servers = new ArrayList<String>();
public List<String> getServers() {
return this.servers;
}
}
I used @ConfigurationProperties feature before, but without loading into map. You need to use @EnableConfigurationProperties annotation to enable this feature.
Cool stuff about this feature is that you can validate your properties.
The legacy solution, before 1.6, was to use .attr
and handle the returned value as a bool
. The main problem is that the returned type of .attr
has changed to string
, and therefore the comparison with == true
is broken (see http://jsfiddle.net/2vene/1/ (and switch the jquery-version)).
With 1.6 .prop
was introduced, which returns a bool
.
Nevertheless, I suggest to use .is()
, as the returned type is intrinsically bool
, like:
$('#dropUnit').is(':disabled');
$('#dropUnit').is(':enabled');
Furthermore .is()
is much more natural (in terms of "natural language") and adds more conditions than a simple attribute-comparison (eg: .is(':last')
, .is(':visible')
, ... please see documentation on selectors).
O(n^2) java implementation:
void LIS(int arr[]){
int maxCount[]=new int[arr.length];
int link[]=new int[arr.length];
int maxI=0;
link[0]=0;
maxCount[0]=0;
for (int i = 1; i < arr.length; i++) {
for (int j = 0; j < i; j++) {
if(arr[j]<arr[i] && ((maxCount[j]+1)>maxCount[i])){
maxCount[i]=maxCount[j]+1;
link[i]=j;
if(maxCount[i]>maxCount[maxI]){
maxI=i;
}
}
}
}
for (int i = 0; i < link.length; i++) {
System.out.println(arr[i]+" "+link[i]);
}
print(arr,maxI,link);
}
void print(int arr[],int index,int link[]){
if(link[index]==index){
System.out.println(arr[index]+" ");
return;
}else{
print(arr, link[index], link);
System.out.println(arr[index]+" ");
}
}
For space-character removal use
"hello world".replace(/\s/g, "");
for all white space use the suggestion by Rocket in the comments below!
You should use UNION if you want to combine different resultsets. Try the following:
(SELECT *
FROM ( SELECT *
FROM orders_products
INNER JOIN orders ON orders_products.orders_id = orders.orders_id
WHERE products_id = 181) AS A)
UNION
(SELECT *
FROM ( SELECT *
FROM orders_products
INNER JOIN orders ON orders_products.orders_id = orders.orders_id
WHERE products_id = 180) AS B
ON A.orders_id=B.orders_id)
With multiple conditions
<div ng-class="{'class1' : con1 || can2, 'class2' : con3 && con4}">
Hello World!
</div>
A tool like systemtap (or a tracer) can monitor kernel signal-transmission logic and report. e.g., https://sourceware.org/systemtap/examples/process/sigmon.stp
# stap .../sigmon.stp -x 31994 SIGKILL
SPID SNAME RPID RNAME SIGNUM SIGNAME
5609 bash 31994 find 9 SIGKILL
The filtering if
block in that script can be adjusted to taste, or eliminated to trace systemwide signal traffic. Causes can be further isolated by collecting backtraces (add a print_backtrace()
and/or print_ubacktrace()
to the probe, for kernel- and userspace- respectively).
Add some jquery code, you need jquery to do this :
<script>
$(".btn[data-toggle='collapse']").click(function() {
if ($(this).text() == '+') {
$(this).text('-');
} else {
$(this).text('+');
}
});
</script>
In the root web.config
for your project, under the system.web
node:
<system.web>
<httpRuntime maxUrlLength="10999" maxQueryStringLength="2097151" />
...
In addition, I had to add this under the system.webServer
node or I got a security error for my long query strings:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxUrl="10999" maxQueryString="2097151" />
</requestFiltering>
</security>
...
public async Task<HttpResponseMessage> PostFormDataAsync() //async is used for defining an asynchronous method
{
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
var fileLocation = "";
string root = HttpContext.Current.Server.MapPath("~/App_Data");
MultipartFormDataStreamProvider provider = new MultipartFormDataStreamProvider(root); //Helps in HTML file uploads to write data to File Stream
try
{
// Read the form data.
await Request.Content.ReadAsMultipartAsync(provider);
// This illustrates how to get the file names.
foreach (MultipartFileData file in provider.FileData)
{
Trace.WriteLine(file.Headers.ContentDisposition.FileName); //Gets the file name
var filePath = file.Headers.ContentDisposition.FileName.Substring(1, file.Headers.ContentDisposition.FileName.Length - 2); //File name without the path
File.Copy(file.LocalFileName, file.LocalFileName + filePath); //Save a copy for reading it
fileLocation = file.LocalFileName + filePath; //Complete file location
}
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, recordStatus);
return response;
}
catch (System.Exception e)
{
return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e);
}
}
public void ReadFromExcel()
{
try
{
DataTable sheet1 = new DataTable();
OleDbConnectionStringBuilder csbuilder = new OleDbConnectionStringBuilder();
csbuilder.Provider = "Microsoft.ACE.OLEDB.12.0";
csbuilder.DataSource = fileLocation;
csbuilder.Add("Extended Properties", "Excel 12.0 Xml;HDR=YES");
string selectSql = @"SELECT * FROM [Sheet1$]";
using (OleDbConnection connection = new OleDbConnection(csbuilder.ConnectionString))
using (OleDbDataAdapter adapter = new OleDbDataAdapter(selectSql, connection))
{
connection.Open();
adapter.Fill(sheet1);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
I find it useful when including or requiring _dbconnection.php_
and _functions.php
in files that are actually processed, rather than including in the header. Which is included in itself.
So if your header and footer is included, simply include all your functional files before the header is included.
Use parseJSON
. Look at the doc
var obj = $.parseJSON(data);
Something like this:
$.ajax({
type: "POST",
url: '/admin/systemgoalssystemgoalupdate?format=html',
data: formdata,
success: function (data) {
console.log($.parseJSON(data)); //will log Object
}
});
for mysql 'text':
@Column(columnDefinition = "TEXT")
private String description;
for mysql 'longtext':
@Lob
private String description;
As well as /etc/profile
which others have mentioned, some Linux systems now use a directory /etc/profile.d/
; any .sh
files in there will be sourced by /etc/profile
. It's slightly neater to keep your custom environment stuff in these files than to just edit /etc/profile
.
As you said, in MySQL USAGE
is synonymous with "no privileges". From the MySQL Reference Manual:
The USAGE privilege specifier stands for "no privileges." It is used at the global level with GRANT to modify account attributes such as resource limits or SSL characteristics without affecting existing account privileges.
USAGE
is a way to tell MySQL that an account exists without conferring any real privileges to that account. They merely have permission to use the MySQL server, hence USAGE
. It corresponds to a row in the `mysql`.`user`
table with no privileges set.
The IDENTIFIED BY
clause indicates that a password is set for that user. How do we know a user is who they say they are? They identify themselves by sending the correct password for their account.
A user's password is one of those global level account attributes that isn't tied to a specific database or table. It also lives in the `mysql`.`user`
table. If the user does not have any other privileges ON *.*
, they are granted USAGE ON *.*
and their password hash is displayed there. This is often a side effect of a CREATE USER
statement. When a user is created in that way, they initially have no privileges so they are merely granted USAGE
.
I have summarized my favorites to try out:
https://repl.it/@SmaMa/Python-List-of-unique-dictionaries
# ----------------------------------------------
# Setup
# ----------------------------------------------
myList = [
{"id":"1", "lala": "value_1"},
{"id": "2", "lala": "value_2"},
{"id": "2", "lala": "value_2"},
{"id": "3", "lala": "value_3"}
]
print("myList:", myList)
# -----------------------------------------------
# Option 1 if objects has an unique identifier
# -----------------------------------------------
myUniqueList = list({myObject['id']:myObject for myObject in myList}.values())
print("myUniqueList:", myUniqueList)
# -----------------------------------------------
# Option 2 if uniquely identified by whole object
# -----------------------------------------------
myUniqueSet = [dict(s) for s in set(frozenset(myObject.items()) for myObject in myList)]
print("myUniqueSet:", myUniqueSet)
# -----------------------------------------------
# Option 3 for hashable objects (not dicts)
# -----------------------------------------------
myHashableObjects = list(set(["1", "2", "2", "3"]))
print("myHashAbleList:", myHashableObjects)
As it may happens that the default branch of your submodules are not master
(which happens a lot in my case), this is how I automate the full Git submodules upgrades:
git submodule init
git submodule update
git submodule foreach 'git fetch origin; git checkout $(git rev-parse --abbrev-ref HEAD); git reset --hard origin/$(git rev-parse --abbrev-ref HEAD); git submodule update --recursive; git clean -dfx'
As indicated by the other answers, the error is to due to k = list[0:j]
, where your key is converted to a list. One thing you could try is reworking your code to take advantage of the split
function:
# Using with ensures that the file is properly closed when you're done
with open('filename.txt', 'rb') as f:
d = {}
# Here we use readlines() to split the file into a list where each element is a line
for line in f.readlines():
# Now we split the file on `x`, since the part before the x will be
# the key and the part after the value
line = line.split('x')
# Take the line parts and strip out the spaces, assigning them to the variables
# Once you get a bit more comfortable, this works as well:
# key, value = [x.strip() for x in line]
key = line[0].strip()
value = line[1].strip()
# Now we check if the dictionary contains the key; if so, append the new value,
# and if not, make a new list that contains the current value
# (For future reference, this is a great place for a defaultdict :)
if key in d:
d[key].append(value)
else:
d[key] = [value]
print d
# {'AAA': ['111', '112'], 'AAC': ['123'], 'AAB': ['111']}
Note that if you are using Python 3.x, you'll have to make a minor adjustment to get it work properly. If you open the file with rb
, you'll need to use line = line.split(b'x')
(which makes sure you are splitting the byte with the proper type of string). You can also open the file using with open('filename.txt', 'rU') as f:
(or even with open('filename.txt', 'r') as f:
) and it should work fine.
From my understanding, fixed-point arithmetic is done using integers. where the decimal part is stored in a fixed amount of bits, or the number is multiplied by how many digits of decimal precision is needed.
For example, If the number 12.34
needs to be stored and we only need two digits of precision after the decimal point, the number is multiplied by 100
to get 1234
. When performing math on this number, we'd use this rule set. Adding 5620
or 56.20
to this number would yield 6854
in data or 68.54
.
If we want to calculate the decimal part of a fixed-point number, we use the modulo (%) operand.
12.34 (pseudocode):
v1 = 1234 / 100 // get the whole number
v2 = 1234 % 100 // get the decimal number (100ths of a whole).
print v1 + "." + v2 // "12.34"
Floating point numbers are a completely different story in programming. The current standard for floating point numbers use something like 23 bits for the data of the number, 8 bits for the exponent, and 1 but for sign. See this Wikipedia link for more information on this.
If you have Windows Subsystem for Linux (WSL)
, natively on Windows 10 and Windows Server 2019 you can do it like this:
Set up WSL:
To enable Windows Subsystem for Linux, follow the instructions on Microsoft Docs. The short version is: In Windows 10, Microsoft replaces Command Prompt with PowerShell as the default shell. Open PowerShell as Administrator and run this command to enable Windows Subsystem for Linux (WSL):
Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
Reboot Windows after making the change—note that you only need to do this one time.
Download and install one of the supported Linux distros from the Microsoft Store. Ubuntu works fine.
Note that Ubuntu 20.04 LTS
may give you some trouble because of a known issue with the realtime clock (as of August 2020). Choosing Ubuntu 18.04 LTS
instead avoids that issue.
Install and Test Redis:
Launch the installed distro from your Windows Store and then install redis-server. The following example works with Ubuntu (you’ll need to wait for initialization and create a login upon first use):
> sudo apt-get update
> sudo apt-get upgrade
> sudo apt-get install redis-server
> redis-cli -v
Restart the Redis server to make sure it is running:
> sudo service redis-server restart
Execute a simple Redis command to verify your Redis server is running and available:
$ redis-cli
127.0.0.1:6379> set user:1 "Oscar"
127.0.0.1:6379> get user:1
"Oscar"
To stop your Redis server:
> sudo service redis-server stop
Source:
If you are not using fig and ax plot objects you can do it like so:
import matplotlib.pyplot as plt
# do plot specifics
plt.legend('')
plt.show()
I just did it very simply using onpause and onplay properties of the html video tag. Create some javascript function to toggle a global variable so that the page knows the status of the video for other functions.
Javascript below:
// onPause function
function videoPause() {
videoPlaying = 0;
}
// onPause function
function videoPlay() {
videoPlaying = 1;
}
Html video tag:
<video id="mainVideo" width="660" controls onplay="videoPlay();" onpause="videoPause();" >
<source src="video/myvideo.mp4" type="video/mp4">
</video>
than you can use onclick javascript to do something depending on the status variable in this case videoPlaying.
hope this helps...
You're probably looking for the Convert.ChangeType
method. For example:
Ship ship = new Ship();
string value = "5.5";
PropertyInfo propertyInfo = ship.GetType().GetProperty("Latitude");
propertyInfo.SetValue(ship, Convert.ChangeType(value, propertyInfo.PropertyType), null);
I've done some timings over the various recommendations here, and the results really depend on the size of the table involved, but the most consistent solution is using the CROSS APPLY These tests were run against SQL Server 2008-R2, using a table with 6,500 records, and another (identical schema) with 137 million records. The columns being queried are part of the primary key on the table, and the table width is very small (about 30 bytes). The times are reported by SQL Server from the actual execution plan.
Query Time for 6500 (ms) Time for 137M(ms)
CROSS APPLY 17.9 17.9
SELECT WHERE col = (SELECT MAX(COL)…) 6.6 854.4
DENSE_RANK() OVER PARTITION 6.6 907.1
I think the really amazing thing was how consistent the time was for the CROSS APPLY regardless of the number of rows involved.
The compiler doesn't know that Environment.Exit() does not return. Why not just "return" from Main()?
As drew_w said, you can find a good example here.
HTML
<div id="wrapper">
<div id="sidebar-wrapper">
<ul class="sidebar-nav">
<li class="sidebar-brand"><a href="#">Home</a></li>
<li><a href="#">Another link</a></li>
<li><a href="#">Next link</a></li>
<li><a href="#">Last link</a></li>
</ul>
</div>
<div id="page-content-wrapper">
<div class="page-content">
<div class="container">
<div class="row">
<div class="col-md-12">
<!-- content of page -->
</div>
</div>
</div>
</div>
</div>
</div>
CSS
#wrapper {
padding-left: 250px;
transition: all 0.4s ease 0s;
}
#sidebar-wrapper {
margin-left: -250px;
left: 250px;
width: 250px;
background: #CCC;
position: fixed;
height: 100%;
overflow-y: auto;
z-index: 1000;
transition: all 0.4s ease 0s;
}
#page-content-wrapper {
width: 100%;
}
.sidebar-nav {
position: absolute;
top: 0;
width: 250px;
list-style: none;
margin: 0;
padding: 0;
}
@media (max-width:767px) {
#wrapper {
padding-left: 0;
}
#sidebar-wrapper {
left: 0;
}
#wrapper.active {
position: relative;
left: 250px;
}
#wrapper.active #sidebar-wrapper {
left: 250px;
width: 250px;
transition: all 0.4s ease 0s;
}
}
The reason your code fails is because post()
will start an asynchronous request to the server. What that means for you is that post()
returns immediately, not after the request completes, like you are expecting.
What you need, then, is for the request to be synchronous and block the current thread until the request completes. Thus,
var it_works = false;
$.ajax({
url: 'some_file.php',
async: false, # makes request synchronous
success: function() {
it_works = true;
}
});
alert(it_works);
After several tries, I got it! I'm setting the keyboard values programmatically like this:
myEditText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
Or if you want you can edit the XML like so:
android: inputType = "numberPassword"
Both configs will display password bullets, so we need to create a custom ClickableSpan
class:
private class NumericKeyBoardTransformationMethod extends PasswordTransformationMethod {
@Override
public CharSequence getTransformation(CharSequence source, View view) {
return source;
}
}
Finally we need to implement it on the EditText
in order to display the characters typed.
myEditText.setTransformationMethod(new NumericKeyBoardTransformationMethod());
This is how my keyboard looks like now:
@GET
@Path("/friends")
@Produces(MediaType.APPLICATION_JSON)
public String getFriends() {
// here you can return any bean also it will automatically convert into json
return "{'friends': ['Michael', 'Tom', 'Daniel', 'John', 'Nick']}";
}
Another way to do this solely with css:
input[type='checkbox'] {
float: left;
width: 20px;
}
input[type='checkbox'] + label {
display: block;
width: 30px;
}
Note that this forces each checkbox and its label onto a separate line, rather than only doing so only when there's overflow.
Not sure if this will help in your context...
Can the soap object be cast as a BindingProvider ?
MyWebServiceSoap soap;
MyWebService service = new MyWebService("http://www.google.com");
soap = service.getMyWebServiceSoap();
// set timeouts here
((BindingProvider)soap).getRequestContext().put("com.sun.xml.internal.ws.request.timeout", 10000);
soap.sendRequestToMyWebService();
On the other hand if you are wanting to set the timeout on the initialization of the MyWebService object then this will not help.
This worked for me when wanting to timeout the individual WebService calls.
How about SymPy? Their solver looks like what you need. Have a look at their source code if you want to build the library yourself…
message = 'The quick brown fox jumped over the lazy dog. 1234567890 !@#$%^&*()_+-'
encrypted = ''.join(chr(ord(char)+3) for char in message)
decrypted = ''.join(chr(ord(char)-3) for char in encrypted)
print(encrypted)
print(decrypted)
# Wkh#txlfn#eurzq#ir{#mxpshg#ryhu#wkh#od}|#grj1#456789:;<3#$C&'(a)-+,b.0
# The quick brown fox jumped over the lazy dog. 1234567890 !@#$%^&*()_+-
You can now do this without the use of Android SDK.
In the latest version of chrome (I am working on 34.0.x):
chrome://inspect/
Discover USB Devices
There will now be an item on the chrome://inspect/
pages for your phone, and you can click inspect
. Dev tools will spawn and voila!
Using JavaScript native Date functions you can get hours, minutes and seconds as you want. If you wish to format date and time in particular way you may want to implement a method extending JavaScript Date prototype.
Here is one already implemented: https://github.com/jacwright/date.format
On Mac, the python standard library has a module called EasyDialogs
. There is also a (ctypes based) windows version at http://www.averdevelopment.com/python/EasyDialogs.html
If it matters to you: it uses native dialogs and doesn't depend on Tkinter like the already mentioned easygui
, but it might not have as much features.
Use center
:
<center><form></form></center>
This is just one method, though it's not advised.
Ancient Edit: Please do not do this. I am just saying it is a thing that exists.
Answer is adding this 2 lines of code to Global.asax.cs Application_Start method
var json = GlobalConfiguration.Configuration.Formatters.JsonFormatter;
json.SerializerSettings.PreserveReferencesHandling =
Newtonsoft.Json.PreserveReferencesHandling.All;
Reference: Handling Circular Object References
As mentioned already, you can use the arguments
object to retrieve a variable number of function parameters.
If you want to call another function with the same arguments, use apply
. You can even add or remove arguments by converting arguments
to an array. For example, this function inserts some text before logging to console:
log() {
let args = Array.prototype.slice.call(arguments);
args = ['MyObjectName', this.id_].concat(args);
console.log.apply(console, args);
}
This class-based javascript animation works in AngularJS 1.2 (and 1.4 tested)
Edit: I ended up abandoning this code and went a completely different direction. I like my other answer much better. This answer will give you some problems in certain situations.
myApp.animation('.ng-show-toggle-slidedown', function(){
return {
beforeAddClass : function(element, className, done){
if (className == 'ng-hide'){
$(element).slideUp({duration: 400}, done);
} else {done();}
},
beforeRemoveClass : function(element, className, done){
if (className == 'ng-hide'){
$(element).css({display:'none'});
$(element).slideDown({duration: 400}, done);
} else {done();}
}
}
});
Simply add the .ng-hide-toggle-slidedown
class to the container element, and the jQuery slide down behavior will be implemented based on the ng-hide class.
You must include the $(element).css({display:'none'})
line in the beforeRemoveClass
method because jQuery will not execute a slideDown unless the element is in a state of display: none
prior to starting the jQuery animation. AngularJS uses the CSS
.ng-hide:not(.ng-hide-animate) {
display: none !important;
}
to hide the element. jQuery is not aware of this state, and jQuery will need the display:none
prior to the first slide down animation.
The AngularJS animation will add the .ng-hide-animate
and .ng-animate
classes while the animation is occuring.
The correct answer to this particular questions is "don't select". Sometimes you have to select or activate, but 99% of the time you don't. If your code looks like
Select something
Do something to the selection
Select something else
Do something to the selection
You probably need to refactor and consider not selecting.
The error, Method 'Range' of object '_Worksheet' failed, error 1004, that you're getting is because the sheet with the button on it doesn't have a range named "Result". Most (maybe all) properties that return an object have a default Parent object. In this case, you're using the Range property to return a Range object. Because you don't qualify the Range property, Excel uses the default.
The default Parent object can be different based on the circumstances. If your code were in a standard module, then the ActiveSheet would be the default Parent and Excel would try to resolve ActiveSheet.Range("Result"). Your code is in a sheet's class module (the sheet with the button on it). When the unqualified reference is used there, the default Parent is the sheet that's attached to that module. In this case they're the same because the sheet has to be active to click the button, but that isn't always the case.
When Excel gives the error that includes text like '_Object' (yours said '_Worksheet') it's always referring to the default Parent object - the underscore gives that away. Generally the way to fix that is to qualify the reference by being explicit about the parent. But in the case of selecting and activating when you don't need to, it's better to just refactor the code.
Here's one way to write your code without any selecting or activating.
Private Sub cmdRecord_Click()
Dim shSource As Worksheet
Dim shDest As Worksheet
Dim rNext As Range
'Me refers to the sheet whose class module you're in
'Me.Parent refers to the workbook
Set shSource = Me.Parent.Worksheets("BxWsn Simulation")
Set shDest = Me.Parent.Worksheets("Reslt Record")
Set rNext = shDest.Cells(shDest.Rows.Count, 1).End(xlUp).Offset(1, 0)
shSource.Range("Result").Copy
rNext.PasteSpecial xlPasteFormulasAndNumberFormats
Application.CutCopyMode = False
End Sub
When I'm in a class module, like the sheet's class module that you're working in, I always try to do things in terms of that class. So I use Me.Parent instead of ActiveWorkbook. It makes the code more portable and prevents unexpected problems when things change.
I'm sure the code you have now runs in milliseconds, so you may not care, but avoiding selecting will definitely speed up your code and you don't have to set ScreenUpdating. That may become important as your code grows or in a different situation.
We can also use postgresql-easy. It is built on node-postgres and sqlutil. Note: pg_connection.js & your_handler.js are in the same folder. db.js is in the config folder placed.
pg_connection.js
const PgConnection = require('postgresql-easy');
const dbConfig = require('./config/db');
const pg = new PgConnection(dbConfig);
module.exports = pg;
./config/db.js
module.exports = {
database: 'your db',
host: 'your host',
port: 'your port',
user: 'your user',
password: 'your pwd',
}
your_handler.js
const pg_conctn = require('./pg_connection');
pg_conctn.getAll('your table')
.then(res => {
doResponseHandlingstuff();
})
.catch(e => {
doErrorHandlingStuff()
})
I've just bumped into this myself and this variation worked for me:
db.foo.remove({**_id**: new ObjectId("4f872685a64eed5a980ca536")})
2015July15 - the signin that was working last week with this script on login
<script src="https://apis.google.com/js/platform.js" async defer></script>
stopped working and started causing Error 400 with Error: redirect_uri_mismatch
and in the DETAILS section: redirect_uri=storagerelay://...
i solved it by changing to:
<script src="https://apis.google.com/js/client:platform.js?onload=startApp"></script>
public void javascriptclick(String element)
{
WebElement webElement=driver.findElement(By.xpath(element));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].click();",webElement);
System.out.println("javascriptclick"+" "+ element);
}
I solved this by adding the following arguments to the command line string:
mysql --user username --password password --host localhost --port 3306 databasename < "system path to .sql file"
Without the --host
and --port
arguments, especially if you change the port to let's say 3307, which is a non default value, will cause this error.
new AsyncRoute({path: '/demo/:demoKey1/:demoKey2', loader: () => {
return System.import('app/modules/demo/demo').then(m =>m.demoComponent);
}, name: 'demoPage'}),
export class demoComponent {
onClick(){
this._router.navigate( ['/demoPage', {demoKey1: "123", demoKey2: "234"}]);
}
}
Use push_back()
:
std::string y("Hello worl");
y.push_back('d')
std::cout << y;
I found problems with the two common ways of doing this:
Doing this with custom headers (<customHeaders>
) in web.config allows different deployments of the same application to have this set differently. I see this as one more thing that can go wrong, so I think it's better if the application specifies this in code. Also, IIS6 doesn't support this.
Including an HTML <meta>
tag in a Web Forms Master Page or MVC Layout Page seems better than the above. However, if some pages don't inherit from these then the tag needs to be duplicated, so there's a potential maintainability and reliability problem.
Network traffic could be reduced by only sending the X-UA-Compatible
header to Internet Explorer clients.
If your application is structured in a way that causes all pages to ultimately inherit from a single root page, include the <meta>
tag as shown in the other answers.
Otherwise,
I think the best way to do this is to automatically add the HTTP header to all HTML responses. One way to do this is using an IHttpModule
:
public class IeCompatibilityModeDisabler : IHttpModule
{
public void Init(HttpApplication context)
{
context.PreSendRequestHeaders += (sender, e) => DisableCompatibilityModeIfApplicable();
}
private void DisableCompatibilityModeIfApplicable()
{
if (IsIe && IsPage)
DisableCompatibilityMode();
}
private void DisableCompatibilityMode()
{
var response = Context.Response;
response.AddHeader("X-UA-Compatible", "IE=edge");
}
private bool IsIe { get { return Context.Request.Browser.IsBrowser("IE"); } }
private bool IsPage { get { return Context.Handler is Page; } }
private HttpContext Context { get { return HttpContext.Current; } }
public void Dispose() { }
}
IE=edge
indicates that IE should use its latest rendering engine (rather than compatibility mode) to render the page.
It seems that HTTP modules are often registered in the web.config file, but this brings us back to the first problem. However, you can register them programmatically in Global.asax like this:
public class Global : HttpApplication
{
private static IeCompatibilityModeDisabler module;
void Application_Start(object sender, EventArgs e)
{
module = new IeCompatibilityModeDisabler();
}
public override void Init()
{
base.Init();
module.Init(this);
}
}
Note that it is important that the module is static
and not instantiated in Init
so that there is only one instance per application. Of course, in a real-world application an IoC container should probably be managing this.
PreSendRequestHeaders
event in the above code doesn't seem to fire in IIS6. I haven't figured out how to resolve this bug yet.I modified @FrinkTheBrave 's answer to also create sub-directories, and resolve relative paths:
$src_root = Resolve-Path("./source/path/")
$target_root = Resolve-Path("./target/path/")
$glob_filter = "*.*"
Get-ChildItem -path $src_root -filter $glob_filter -recurse |
ForEach-Object {
$target_filename=($_.FullName -replace [regex]::escape($src_root),$target_root)
$target_path=Split-Path $target_filename
if (!(Test-Path -Path $target_path)) {
New-Item $target_path -ItemType Directory
}
Copy-Item $_.FullName -destination $target_filename
}
Assuming you know the size of your footer, you can do this:
footer {
position: sticky;
height: 100px;
top: calc( 100vh - 100px );
}
#similar {
float:left;
width:200px;
background:#000;
clear:both;
}
For the specific case where you know the data will not have nulls (always a good idea for strings) and the data is really large, you are still doing three comparisons before actually comparing the values, if you know for sure this is your case, you can optimize a tad bit. YMMV as readable code trumps minor optimization:
if(o1.name != null && o2.name != null){
return o1.name.compareToIgnoreCase(o2.name);
}
// at least one is null
return (o1.name == o2.name) ? 0 : (o1.name != null ? 1 : -1);
I use HttpWebRequest to GET from the web service, which returns me a JSON string. It looks something like this for a GET:
// Returns JSON string
string GET(string url)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
try {
WebResponse response = request.GetResponse();
using (Stream responseStream = response.GetResponseStream()) {
StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.UTF8);
return reader.ReadToEnd();
}
}
catch (WebException ex) {
WebResponse errorResponse = ex.Response;
using (Stream responseStream = errorResponse.GetResponseStream())
{
StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.GetEncoding("utf-8"));
String errorText = reader.ReadToEnd();
// log errorText
}
throw;
}
}
I then use JSON.Net to dynamically parse the string. Alternatively, you can generate the C# class statically from sample JSON output using this codeplex tool: http://jsonclassgenerator.codeplex.com/
POST looks like this:
// POST a JSON string
void POST(string url, string jsonContent)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
Byte[] byteArray = encoding.GetBytes(jsonContent);
request.ContentLength = byteArray.Length;
request.ContentType = @"application/json";
using (Stream dataStream = request.GetRequestStream()) {
dataStream.Write(byteArray, 0, byteArray.Length);
}
long length = 0;
try {
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) {
length = response.ContentLength;
}
}
catch (WebException ex) {
// Log exception and throw as for GET example above
}
}
I use code like this in automated tests of our web service.
There is a pretty significant difference between the two. The empty string ""
is "the string that has no characters in it." It's an actual string that has a well-defined length. All of the standard string operations are well-defined on the empty string - you can convert it to lower case, look up the index of some character in it, etc. The null string null
is "no string at all." It doesn't have a length because it's not a string at all. Trying to apply any standard string operation to the null string will cause a NullPointerException
at runtime.
how will I know that some tables are locked?
You can use SHOW OPEN TABLES command to view locked tables.
how do I unlock tables manually?
If you know the session ID that locked tables - 'SELECT CONNECTION_ID()', then you can run KILL command to terminate session and unlock tables.
Return response headers with a reference parameter:
<?php
$data=array('device_token'=>'5641c5b10751c49c07ceb4',
'content'=>'????test'
);
$rtn=curl_to_host('POST', 'http://test.com/send_by_device_token', array(), $data, $resp_headers);
echo $rtn;
var_export($resp_headers);
function curl_to_host($method, $url, $headers, $data, &$resp_headers)
{$ch=curl_init($url);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $GLOBALS['POST_TO_HOST.LINE_TIMEOUT']?$GLOBALS['POST_TO_HOST.LINE_TIMEOUT']:5);
curl_setopt($ch, CURLOPT_TIMEOUT, $GLOBALS['POST_TO_HOST.TOTAL_TIMEOUT']?$GLOBALS['POST_TO_HOST.TOTAL_TIMEOUT']:20);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_HEADER, 1);
if ($method=='POST')
{curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
}
foreach ($headers as $k=>$v)
{$headers[$k]=str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', $k)))).': '.$v;
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$rtn=curl_exec($ch);
curl_close($ch);
$rtn=explode("\r\n\r\nHTTP/", $rtn, 2); //to deal with "HTTP/1.1 100 Continue\r\n\r\nHTTP/1.1 200 OK...\r\n\r\n..." header
$rtn=(count($rtn)>1 ? 'HTTP/' : '').array_pop($rtn);
list($str_resp_headers, $rtn)=explode("\r\n\r\n", $rtn, 2);
$str_resp_headers=explode("\r\n", $str_resp_headers);
array_shift($str_resp_headers); //get rid of "HTTP/1.1 200 OK"
$resp_headers=array();
foreach ($str_resp_headers as $k=>$v)
{$v=explode(': ', $v, 2);
$resp_headers[$v[0]]=$v[1];
}
return $rtn;
}
?>
To prevent the records with Empty
or Null
value in SQL result
we can simply add ..... WHERE Column_name != '' or 'null'
This is really old, but <font size="10">
would be about <p style= "font-size:55px">
Use This Query :
Select
S.name + '.' + T.name As TableName ,
SUM( P.rows ) As RowCont
From sys.tables As T
Inner Join sys.partitions As P On ( P.OBJECT_ID = T.OBJECT_ID )
Inner Join sys.schemas As S On ( T.schema_id = S.schema_id )
Where
( T.is_ms_shipped = 0 )
AND
( P.index_id IN (1,0) )
And
( T.type = 'U' )
Group By S.name , T.name
Order By SUM( P.rows ) Desc
Here is how i fixed it.
it will reinstall your pip within the environment and uninstall the previous version automatically.
now boom!! install whatever you like
use this code in teminal :
python -m pip install --upgrade PAKAGE_NAME #instead of PAKAGE_NAME
for example i want update pip pakage :
python -m pip install --upgrade pip
more example :
python -m pip install --upgrade selenium
python -m pip install --upgrade requests
...
One simple way to get rid of the overwriting issue is to use File.AppendText
to append line at the end of the file as
void Main()
{
using (System.IO.StreamWriter sw = System.IO.File.AppendText("file.txt"))
{
string first = reader[0].ToString();
string second=image.ToString();
string csv = string.Format("{0},{1}\n", first, second);
sw.WriteLine(csv);
}
}
The unique name identifier applies to radio buttons:
<input type="radio" />
change your checkboxes to radio and everything should be working
you can do it only in one line as below:
$cnt = mysql_num_rows(mysql_query("SELECT COUNT(1) FROM TABLE"));
echo $cnt;
You might want to have look at simple command line scheduler "at":
C:\Documents and Settings\mahendra.patil>at/?
The AT command schedules commands and programs to run on a computer at a specified time and date. The Schedule service must be running to use the AT command.
AT [\\computername] [ [id] [/DELETE] | /DELETE [/YES]]
AT [\\computername] time [/INTERACTIVE]
[ /EVERY:date[,...] | /NEXT:date[,...]] "command"
\computername Specifies a remote computer. Commands are scheduled on the local computer if this parameter is omitted.
id Is an identification number assigned to a scheduled command.
/delete Cancels a scheduled command. If id is omitted, all the scheduled commands on the computer are canceled.
/yes Used with cancel all jobs command when no further confirmation is desired.
time Specifies the time when command is to run.
/interactive Allows the job to interact with the desktop of the user who is logged on at the time the job runs.
/every:date[,...] Runs the command on each specified day(s) of the week or month. If date is omitted, the current day of the month is assumed.
/next:date[,...] Runs the specified command on the next occurrence of the day (for example, next Thursday). If date is omitted, the current day of the month is assumed.
"command" Is the Windows NT command, or batch program to be run.
While not in the standard library exactly, https://github.com/swenson/sort has just two header files you can include to get access to a wide range of incredibly fast sorting routings, like so:
#define SORT_NAME int64 #define SORT_TYPE int64_t #define SORT_CMP(x, y) ((x) - (y)) #include "sort.h" /* You now have access to int64_quick_sort, int64_tim_sort, etc., e.g., */ int64_quick_sort(arr, 128); /* Assumes you have some int *arr or int arr[128]; */
This should be at least twice as fast as the standard library qsort
, since it doesn't use function pointers, and has many other sorting algorithm options to choose from.
It's in C89, so should work in basically every C compiler.
Try this:
echo str_replace(array('\r\n', '\n\r', '\n', '\r'), '<br>', $description);
I presume you are wanting to check if the array contains a certain value, yes? If so, use the contains
method.
if(Arrays.asList(codes).contains(userCode))
for jQuery
we can use below:
by input name:
$('input[name="textboxname"]').val('some value');
by input class:
$('input[type=text].textboxclass').val('some value');
by input id:
$('#textboxid').val('some value');
This will work to find if a character array is empty. It probably is also the fastest.
if(text[0] == '\0') {}
This will also be fast if the text
array is empty. If it contains characters it needs to count all the characters in it first.
if(strlen(text) == 0) {}
It happened to me when I accidentally left the build in release mode.
The best way to do this is this:
datetimepicker.Format = DatetimePickerFormat.Custom;
datetimepicker.CustomFormat = "HH:mm tt";
datetimepicker.ShowUpDowm = true;
@Styles
and @Scripts
are 2 new helpers provided by System.Web.Optimization
library. As the name suggests, they bundle and minify CSS and JavaScript files or resources respectively.
Try including the namespace System.Web.Optimization
either by @using
directive or through web.config
http://ofps.oreilly.com/titles/9781449320317/ch_ClientOptimization.html#BundlingAndMinification
UPDATE
Microsoft has moved the bundling/minification to a separate package called Microsoft.AspNet.Web.Optimization
. You can download the assembly from nuget.
This post will be useful to you.
try this: http://www.ehow.com/how_4938148_thumbnail-show-up-facebook-share.html
using System;
using System.Data;
using System.Data.SqlClient;
namespace InsertingData
{
class sqlinsertdata
{
static void Main(string[] args)
{
try
{
SqlConnection conn = new SqlConnection("Data source=USER-PC; Database=Emp123;User Id=sa;Password=sa123");
conn.Open();
SqlCommand cmd = new SqlCommand("insert into <Table Name>values(1,'nagendra',10000);",conn);
cmd.ExecuteNonQuery();
Console.WriteLine("Inserting Data Successfully");
conn.Close();
}
catch(Exception e)
{
Console.WriteLine("Exception Occre while creating table:" + e.Message + "\t" + e.GetType());
}
Console.ReadKey();
}
}
}
You can call ViewController this way, If you want with NavigationController
1.In current Screen : Load new screen
VerifyExpViewController *addProjectViewController = [[VerifyExpViewController alloc] init];
[self.navigationController pushViewController:addProjectViewController animated:YES];
2.1 In Loaded View : add below in .h file
@interface VerifyExpViewController : UIViewController <UINavigationControllerDelegate>
2.2 In Loaded View : add below in .m file
@implementation VerifyExpViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationController.delegate = self;
[self setNavigationBar];
}
-(void)setNavigationBar
{
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.translucent = YES;
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"B_topbar.png"] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor whiteColor]};
self.navigationItem.hidesBackButton = YES;
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"Btn_topback.png"] style:UIBarButtonItemStylePlain target:self action:@selector(onBackButtonTap:)];
self.navigationItem.leftBarButtonItem.tintColor = [UIColor lightGrayColor];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"Save.png"] style:UIBarButtonItemStylePlain target:self action:@selector(onSaveButtonTap:)];
self.navigationItem.rightBarButtonItem.tintColor = [UIColor lightGrayColor];
}
-(void)onBackButtonTap:(id)sender
{
[self.navigationController popViewControllerAnimated:YES];
}
-(IBAction)onSaveButtonTap:(id)sender
{
//todo for save button
}
@end
Hope this will be useful for someone there :)
Here is a solution based on the powerful but poorly documented logging.config.dictConfig
method.
Instead of sending every log message to stdout
, it sends messages with log level ERROR
and higher to stderr
and everything else to stdout
.
This can be useful if other parts of the system are listening to stderr
or stdout
.
import logging
import logging.config
import sys
class _ExcludeErrorsFilter(logging.Filter):
def filter(self, record):
"""Only returns log messages with log level below ERROR (numeric value: 40)."""
return record.levelno < 40
config = {
'version': 1,
'filters': {
'exclude_errors': {
'()': _ExcludeErrorsFilter
}
},
'formatters': {
# Modify log message format here or replace with your custom formatter class
'my_formatter': {
'format': '(%(process)d) %(asctime)s %(name)s (line %(lineno)s) | %(levelname)s %(message)s'
}
},
'handlers': {
'console_stderr': {
# Sends log messages with log level ERROR or higher to stderr
'class': 'logging.StreamHandler',
'level': 'ERROR',
'formatter': 'my_formatter',
'stream': sys.stderr
},
'console_stdout': {
# Sends log messages with log level lower than ERROR to stdout
'class': 'logging.StreamHandler',
'level': 'DEBUG',
'formatter': 'my_formatter',
'filters': ['exclude_errors'],
'stream': sys.stdout
},
'file': {
# Sends all log messages to a file
'class': 'logging.FileHandler',
'level': 'DEBUG',
'formatter': 'my_formatter',
'filename': 'my.log',
'encoding': 'utf8'
}
},
'root': {
# In general, this should be kept at 'NOTSET'.
# Otherwise it would interfere with the log levels set for each handler.
'level': 'NOTSET',
'handlers': ['console_stderr', 'console_stdout', 'file']
},
}
logging.config.dictConfig(config)
On change of the input track how many files are selected:
$("#image").on("change", function() {_x000D_
if ($("#image")[0].files.length > 2) {_x000D_
alert("You can select only 2 images");_x000D_
} else {_x000D_
$("#imageUploadForm").submit();_x000D_
}_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<strong>On change of the input track how many files are selected:</strong>_x000D_
<input name="image[]" id="image" type="file" multiple="multiple" accept="image/jpg, image/jpeg" >
_x000D_
You inflate an XML resource. See the LayoutInflater doc .
If your layout is in a mylayout.xml, you would do something like:
View view;
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.mylayout, null);
RelativeLayout item = (RelativeLayout) view.findViewById(R.id.item);
In python 3.2 and later, there is a useful contextmanager for this in the stdlib https://docs.python.org/3/library/tempfile.html#tempfile.TemporaryDirectory
ContextMenuStrip
CellContextMenuStripNeeded
e.ColumnIndex
, e.RowIndex
.I believe that e.RowIndex
is what you are asking for.
Suggestion: when user causes your event CellContextMenuStripNeeded
to fire, use e.RowIndex
to get data from your grid, such as the ID. Store the ID as the menu event's tag item.
Now, when user actually clicks your menu item, use the Sender property to fetch the tag. Use the tag, containing your ID, to perform the action you need.
Are you escaping it with \
?
/\[/
Here's a helpful resource to get started with Regular Expressions:
Finally, I've defeated my CiSCO EAP-FAST corporate wifi network, and all our Android devices are now able to connect to it.
The walk-around I've performed in order to gain access to this kind of networks from an Android device are easiest than you can imagine.
There's a Wifi Config Editor in the Google Play Store you can use to "activate" the secondary CISCO Protocols when you are setting up a EAP wifi connection.
Its name is Wifi Config Advanced Editor.
First, you have to setup your wireless network manually as close as you can to your "official" corporate wifi parameters.
Save it.
Go to the WCE and edit the parameters of the network you have created in the previous step.
There are 3 or 4 series of settings you should activate in order to force the Android device to use them as a way to connect (the main site I think you want to visit is Enterprise Configuration, but don't forget to check all the parameters to change them if needed.
As a suggestion, even if you have a WPA2 EAP-FAST Cipher, try LEAP in your setup. It worked for me as a charm.
When you finished to edit the config, go to the main Android wifi controller, and force to connect to this network.
Do not Edit the network again with the Android wifi interface.
I have tested it on Samsung Galaxy 1 and 2, Note mobile devices, and on a Lenovo Thinkpad Tablet.
To answer the second part of your question - there are no pointers in PHP.
When working with objects, you generally pass by reference rather than by value - so in some ways this operates like a pointer, but is generally completely transparent.
This does depend on the version of PHP you are using.
My approach was, but I can't guarantee that this is the fastest solution.
df = pd.DataFrame(columns=["firstname", "lastname"])
df = df.append({
"firstname": "John",
"lastname": "Johny"
}, ignore_index=True)
java.util.Date temp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSSSS").parse("2012-07-10 14:58:00.000000");
The mm
is minutes you want MM
CODE
public class Test {
public static void main(String[] args) throws ParseException {
java.util.Date temp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSSSS")
.parse("2012-07-10 14:58:00.000000");
System.out.println(temp);
}
}
Prints:
Tue Jul 10 14:58:00 EDT 2012
You are actually ignoring exception in your code. But I suggest you to reconsider.
Here is a quote from Coding Crimes: Ignoring Exceptions
For a start, the exception should be logged at the very least, not just written out to the console. Also, in most cases, the exception should be thrown back to the caller for them to deal with. If it doesn't need to be thrown back to the caller, then the exception should be handled. And some comments would be nice too.
The usual excuse for this type of code is "I didn't have time", but there is a ripple effect when code is left in this state. Chances are that most of this type of code will never get out in the final production. Code reviews or static analysis tools should catch this error pattern. But that's no excuse, all this does is add time to the maintainance and debugging of the software.
Even if you are ignoring it I suggest you to use specific exception names instead of superclass name. ie., Use NullPointerException
instead of Exception
in your catch
clause.
Yes, here's an example:
CREATE TABLE myTable ( col1 int, createdDate datetime DEFAULT(getdate()), updatedDate datetime DEFAULT(getdate()) )
You can INSERT into the table without indicating the createdDate and updatedDate columns:
INSERT INTO myTable (col1) VALUES (1)
Or use the keyword DEFAULT:
INSERT INTO myTable (col1, createdDate, updatedDate) VALUES (1, DEFAULT, DEFAULT)
Then create a trigger for updating the updatedDate column:
CREATE TRIGGER dbo.updateMyTable
ON dbo.myTable
FOR UPDATE
AS
BEGIN
IF NOT UPDATE(updatedDate)
UPDATE dbo.myTable SET updatedDate=GETDATE()
WHERE col1 IN (SELECT col1 FROM inserted)
END
GO
The following are some ways you can create lists.
This will create a list with fixed size, adding/removing elements is not possible, it will throw a java.lang.UnsupportedOperationException
if you try to do so.
List<String> fixedSizeList = Arrays.asList(new String[] {"Male", "Female"});
The following version is a simple list where you can add/remove any number of elements.
List<String> list = new ArrayList<>();
This is how to create a LinkedList
in java, If you need to do frequent insertion/deletion of elements on the list, you should use LinkedList
instead of ArrayList
List<String> linkedList = new LinkedList<>();
Many people prefer to use just .keep
since the convention has nothing to do with git.
OFFSET is what you are looking for.
SELECT * FROM table LIMIT 10 OFFSET 10
Arrays have a property .length
that returns the number of elements.
var st =
{
"itema":{},
"itemb":
[
{"id":"s01","cd":"c01","dd":"d01"},
{"id":"s02","cd":"c02","dd":"d02"}
]
};
st.itemb.length // 2
The default iterator for the JObject is as a dictionary iterating over key/value pairs.
JObject obj = JObject.Parse(response);
foreach (var pair in obj) {
Console.WriteLine (pair.Key);
}
binary tree :
No need to consider values, we need to look at the structrue.
Given by (2 power n) - n
Eg: for three nodes it is (2 power 3) -3 = 8-3 = 5 different structrues
binary search tree:
We need to consider even the node values. We call it as Catalan Number
Given by 2n C n / n+1
The most common approach is to either lowercase or uppercase the search string and the data. But there are two problems with that.
There are at least three less frequently used solutions that might be more effective.
CREATE INDEX ON groups (name::citext);
. (But see below.)CREATE
INDEX ON groups (LOWER(name));
. Having done that, you can take advantage
of the index with queries like SELECT id FROM groups WHERE LOWER(name) = LOWER('ADMINISTRATOR');
, or SELECT id FROM groups WHERE LOWER(name) = 'administrator';
You have to remember to use LOWER(), though.The citext module doesn't provide a true case-insensitive data type. Instead, it behaves as if each string were lowercased. That is, it behaves as if you had called lower()
on each string, as in number 3 above. The advantage is that programmers don't have to remember to lowercase strings. But you need to read the sections "String Comparison Behavior" and "Limitations" in the docs before you decide to use citext.
For this kind of tasks, I repeatedly use Ansible which allows to duplicate coherently bash scripts in several containets or VM. Ansible (more precisely Red Hat) now has an additional web interface AWX which is the open-source edition of their commercial Tower.
Ansible: https://www.ansible.com/
AWX:https://github.com/ansible/awx
Ansible Tower: commercial product, you will probably fist explore the free open-source AWX, rather than the 15days free-trail of Tower
On Mac:
brew install mysql-client
locate mysql
mdfind mysql | grep bin
then add to path
export PATH=$PATH:/usr/local/Cellar/mysql-client/8.0.23/bin/
or permanently
echo "export PATH=$PATH:/usr/local/Cellar/mysql-client/8.0.23/bin/" >> ~/.zshrc
source ~/.zshrc
Getters and setters in JavaScript are used for defining computed properties, or accessors. A computed property is one that uses a function to get or set an object value. The basic theory is doing something like this:
var user = { /* ... object with getters and setters ... */ };
user.phone = '+1 (123) 456-7890'; // updates a database
console.log( user.areaCode ); // displays '123'
console.log( user.area ); // displays 'Anytown, USA'
This is useful for automatically doing things behind-the-scenes when a property is accessed, like keeping numbers in range, reformatting strings, triggering value-has-changed events, updating relational data, providing access to private properties, and more.
The examples below show the basic syntax, though they simply get and set the internal object value without doing anything special. In real-world cases you would modify the input and/or output value to suit your needs, as noted above.
ECMAScript 5 supports get
and set
keywords for defining computed properties. They work with all modern browsers except IE 8 and below.
var foo = {
bar : 123,
get bar(){ return bar; },
set bar( value ){ this.bar = value; }
};
foo.bar = 456;
var gaz = foo.bar;
get
and set
aren't reserved words, so they can be overloaded to create your own custom, cross-browser computed property functions. This will work in any browser.
var foo = {
_bar : 123,
get : function( name ){ return this[ '_' + name ]; },
set : function( name, value ){ this[ '_' + name ] = value; }
};
foo.set( 'bar', 456 );
var gaz = foo.get( 'bar' );
Or for a more compact approach, a single function may be used.
var foo = {
_bar : 123,
value : function( name /*, value */ ){
if( arguments.length < 2 ){ return this[ '_' + name ]; }
this[ '_' + name ] = value;
}
};
foo.value( 'bar', 456 );
var gaz = foo.value( 'bar' );
Avoid doing something like this, which can lead to code bloat.
var foo = {
_a : 123, _b : 456, _c : 789,
getA : function(){ return this._a; },
getB : ..., getC : ..., setA : ..., setB : ..., setC : ...
};
For the above examples, the internal property names are abstracted with an underscore in order to discourage users from simply doing foo.bar
vs. foo.get( 'bar' )
and getting an "uncooked" value. You can use conditional code to do different things depending on the name of the property being accessed (via the name
parameter).
Using Object.defineProperty()
is another way to add getters and setters, and can be used on objects after they're defined. It can also be used to set configurable and enumerable behaviors. This syntax also works with IE 8, but unfortunately only on DOM objects.
var foo = { _bar : 123 };
Object.defineProperty( foo, 'bar', {
get : function(){ return this._bar; },
set : function( value ){ this._bar = value; }
} );
foo.bar = 456;
var gaz = foo.bar;
Finally, __defineGetter__()
is another option. It's deprecated, but still widely used around the web and thus unlikely to disappear anytime soon. It works on all browsers except IE 10 and below. Though the other options also work well on non-IE, so this one isn't that useful.
var foo = { _bar : 123; }
foo.__defineGetter__( 'bar', function(){ return this._bar; } );
foo.__defineSetter__( 'bar', function( value ){ this._bar = value; } );
Also worth noting is that in the latter examples, the internal names must be different than the accessor names to avoid recursion (ie, foo.bar
calling foo.get(bar)
calling foo.bar
calling foo.get(bar)
...).
MDN get, set,
Object.defineProperty(), __defineGetter__(), __defineSetter__()
MSDN
IE8 Getter Support
You can add/edit content on multiple lines by using control button. This is multi edit feature in Notepad++, we need to enable it from settings. Press and hold control, select places where you want to enter text, release control and start typing, this will update the text at all the places selected previously.
Ref: http://notepad-plus-plus.org/features/multi-editing.html
Write this code
<?php
if(isset($_POST['submit'])){
echo 'Hello World';
}
?>
<html>
<body>
<form method="post">
<input type="text" name="studentname">
<input type="submit" name="submit" value="click">
</form>
</body>
</html>
From a lambda, you can't get a reference to anything that isn't final. You need to declare a final wrapper from outside the lamda to hold your variable.
I've added the final 'reference' object as this wrapper.
private TimeZone extractCalendarTimeZoneComponent(Calendar cal,TimeZone calTz) {
final AtomicReference<TimeZone> reference = new AtomicReference<>();
try {
cal.getComponents().getComponents("VTIMEZONE").forEach(component->{
VTimeZone v = (VTimeZone) component;
v.getTimeZoneId();
if(reference.get()==null) {
reference.set(TimeZone.getTimeZone(v.getTimeZoneId().getValue()));
}
});
} catch (Exception e) {
//log.warn("Unable to determine ical timezone", e);
}
return reference.get();
}
Javadocs don't offer any special tools for external links, so you should just use standard html:
See <a href="http://groversmill.com/">Grover's Mill</a> for a history of the
Martian invasion.
or
@see <a href="http://groversmill.com/">Grover's Mill</a> for a history of
the Martian invasion.
Don't use {@link ...}
or {@linkplain ...}
because these are for links to the javadocs of other classes and methods.
Even though question has been answered and accepted long ago, i just want to share my 2 cents:
You can imagine that at the very beginning of your file there is something like (just for explanation):
var module = new Module(...);
var exports = module.exports;
So whatever you do just keep in mind that module.exports
and NOT exports
will be returned from your module when you're requiring that module from somewhere else.
So when you do something like:
exports.a = function() {
console.log("a");
}
exports.b = function() {
console.log("b");
}
You are adding 2 function a
and b
to the object on which module.exports
points too, so the typeof
the returning result will be an object
: { a: [Function], b: [Function] }
Of course, this is the same result you will get if you are using module.exports
in this example instead of exports
.
This is the case where you want your module.exports
to behave like a container of exported values. Whereas, if you only want to export a constructor function then there is something you should know about using module.exports
or exports
;(Remember again that module.exports
will be returned when you require something, not export
).
module.exports = function Something() {
console.log('bla bla');
}
Now typeof
returning result is 'function'
and you can require it and immediately invoke like:
var x = require('./file1.js')();
because you overwrite the returning result to be a function.
However, using exports
you can't use something like:
exports = function Something() {
console.log('bla bla');
}
var x = require('./file1.js')(); //Error: require is not a function
Because with exports
, the reference doesn't point anymore to the object where module.exports
points, so there is not a relationship between exports
and module.exports
anymore. In this case module.exports
still points to the empty object {}
which will be returned.
Accepted answer from another topic should also help: Does Javascript pass by reference?
My solution is as follows:
I didn't find a root folder under C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files
.
Google told me that it might be a permission issue against current user, then I found I have a current Identity: IIS APPPOOL
in the malfunctioning server where the rest of the server has Current Identity: NT AUTHORITY\NETWORK SERVICE
.
Then I changed Current Identity from IIS APPPOOL
to NT AUTHORITY\NETWORK SERVICE
.
From here, I found that resetting the web app rebuilds the temporary ASP.NET cache, solving the issue.
List<KeyValuePair<string, string>> kvpList = new List<KeyValuePair<string, string>>()
{
new KeyValuePair<string, string>("Key1", "Value1"),
new KeyValuePair<string, string>("Key2", "Value2"),
new KeyValuePair<string, string>("Key3", "Value3"),
};
kvpList.Insert(0, new KeyValuePair<string, string>("New Key 1", "New Value 1"));
Using this code:
foreach (KeyValuePair<string, string> kvp in kvpList)
{
Console.WriteLine(string.Format("Key: {0} Value: {1}", kvp.Key, kvp.Value);
}
the expected output should be:
Key: New Key 1 Value: New Value 1
Key: Key 1 Value: Value 1
Key: Key 2 Value: Value 2
Key: Key 3 Value: Value 3
The same will work with a KeyValuePair or whatever other type you want to use..
Edit -
To lookup by the key, you can do the following:
var result = stringList.Where(s => s == "Lookup");
You could do this with a KeyValuePair by doing the following:
var result = kvpList.Where (kvp => kvp.Value == "Lookup");
Last edit -
Made the answer specific to KeyValuePair rather than string.
You need to use CreateProcess [ http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425(v=vs.85).aspx ]
For ex:
LPTSTR szCmdline[] = _tcsdup(TEXT("\"C:\Program Files\MyApp\" -L -S")); CreateProcess(NULL, szCmdline, /.../);
Try this, works like charm, gives the date you have selected. onsubmit form try to get this value:-
var date = $("#scheduleDate").datepicker({ dateFormat: 'dd,MM,yyyy' }).val();
1 + 2 + 4 conditions: starts|ends, but not in the middle
/^@[^@]*@?$|^@?[^@]*@$/
is almost the same that:
/^@?[^@]*@?$/
but this one matches any string without @, sample 'my name is hal9000'
An important point is to consider if you perform tasks based on difference between 2 timestamps because you will get odd behavior if you generate it with gettimeofday()
, and even clock_gettime(CLOCK_REALTIME,..)
at the moment where you will set the time of your system.
To prevent such problem, use clock_gettime(CLOCK_MONOTONIC_RAW, &tms)
instead.
if you are using vs code just try using background:url("img/bimg.jpg") instead of background:url('img/bimg.jpg') Mine worked at it Nothing much I replaced ' with "
It's nano seconds, what are the chances of getting the same seed twice.
Anyway, thanks for the help, here is my end solution based on all the input.
package main
import (
"math/rand"
"time"
)
func init() {
rand.Seed(time.Now().UTC().UnixNano())
}
// generates a random string
func srand(min, max int, readable bool) string {
var length int
var char string
if min < max {
length = min + rand.Intn(max-min)
} else {
length = min
}
if readable == false {
char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
} else {
char = "ABCDEFHJLMNQRTUVWXYZabcefghijkmnopqrtuvwxyz23479"
}
buf := make([]byte, length)
for i := 0; i < length; i++ {
buf[i] = char[rand.Intn(len(char)-1)]
}
return string(buf)
}
// For testing only
func main() {
println(srand(5, 5, true))
println(srand(5, 5, true))
println(srand(5, 5, true))
println(srand(5, 5, false))
println(srand(5, 7, true))
println(srand(5, 10, false))
println(srand(5, 50, true))
println(srand(5, 10, false))
println(srand(5, 50, true))
println(srand(5, 10, false))
println(srand(5, 50, true))
println(srand(5, 10, false))
println(srand(5, 50, true))
println(srand(5, 4, true))
println(srand(5, 400, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
println(srand(6, 5, true))
}
In MySQL, you can do this as well:
SELECT count(*) AS total
, sum(myCol) AS countTrue --yes, you can add TRUEs as TRUE=1 and FALSE=0 !!
FROM yourTable
;
I think that in Postgres, this works:
SELECT count(*) AS total
, sum(myCol::int) AS countTrue --convert Boolean to Integer
FROM yourTable
;
or better (to avoid :: and use standard SQL syntax):
SELECT count(*) AS total
, sum(CAST(myCol AS int)) AS countTrue --convert Boolean to Integer
FROM yourTable
;
You can create extension class of UIColor as:-
extension UIColor {
// MARK: - getColorFromHex /** This function will convert the color Hex code to RGB.
- parameter color hex string.
- returns: RGB color code.
*/
class func getColorFromHex(hexString:String)->UIColor{
var rgbValue : UInt32 = 0
let scanner:NSScanner = NSScanner(string: hexString)
scanner.scanLocation = 1
scanner.scanHexInt(&rgbValue)
return UIColor(red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0, green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0, blue: CGFloat(rgbValue & 0x0000FF) / 255.0, alpha: CGFloat(1.0))
}
}
Try using the code after you active the sheet:
Dim J as integer
J = ActiveSheet.UsedRange.SpecialCells(xlCellTypeLastCell).Row
If you use Cells.SpecialCells(xlCellTypeLastCell).Row
only, the problem will be that the xlCellTypeLastCell
information will not be updated unless one do a "Save file" action. But use UsedRange
will always update the information in realtime.
Just use
filter_input(INPUT_METHOD_NAME, 'var_name')
instead of $_INPUT_METHOD_NAME['var_name']
filter_input_array(INPUT_METHOD_NAME)
instead of $_INPUT_METHOD_NAME
e.g
$host= filter_input(INPUT_SERVER, 'HTTP_HOST');
echo $host;
instead of
$host= $_SERVER['HTTP_HOST'];
echo $host;
And use
var_dump(filter_input_array(INPUT_SERVER));
instead of
var_dump($_SERVER);
N.B: Apply to all other Super Global variable
I was looking for a listing of macOS but found nothing, maybe this helps someone.
Output on macOS Catalina (10.15.7) using net5.0
# SpecialFolders (Only with value)
SpecialFolder.ApplicationData: /Users/$USER/.config
SpecialFolder.CommonApplicationData: /usr/share
SpecialFolder.Desktop: /Users/$USER/Desktop
SpecialFolder.DesktopDirectory: /Users/$USER/Desktop
SpecialFolder.Favorites: /Users/$USER/Library/Favorites
SpecialFolder.Fonts: /Users/$USER/Library/Fonts
SpecialFolder.InternetCache: /Users/$USER/Library/Caches
SpecialFolder.LocalApplicationData: /Users/$USER/.local/share
SpecialFolder.MyDocuments: /Users/$USER
SpecialFolder.MyMusic: /Users/$USER/Music
SpecialFolder.MyPictures: /Users/$USER/Pictures
SpecialFolder.ProgramFiles: /Applications
SpecialFolder.System: /System
SpecialFolder.UserProfile: /Users/$USER
# SpecialFolders (All)
SpecialFolder.AdminTools:
SpecialFolder.ApplicationData: /Users/$USER/.config
SpecialFolder.CDBurning:
SpecialFolder.CommonAdminTools:
SpecialFolder.CommonApplicationData: /usr/share
SpecialFolder.CommonDesktopDirectory:
SpecialFolder.CommonDocuments:
SpecialFolder.CommonMusic:
SpecialFolder.CommonOemLinks:
SpecialFolder.CommonPictures:
SpecialFolder.CommonProgramFiles:
SpecialFolder.CommonProgramFilesX86:
SpecialFolder.CommonPrograms:
SpecialFolder.CommonStartMenu:
SpecialFolder.CommonStartup:
SpecialFolder.CommonTemplates:
SpecialFolder.CommonVideos:
SpecialFolder.Cookies:
SpecialFolder.Desktop: /Users/$USER/Desktop
SpecialFolder.DesktopDirectory: /Users/$USER/Desktop
SpecialFolder.Favorites: /Users/$USER/Library/Favorites
SpecialFolder.Fonts: /Users/$USER/Library/Fonts
SpecialFolder.History:
SpecialFolder.InternetCache: /Users/$USER/Library/Caches
SpecialFolder.LocalApplicationData: /Users/$USER/.local/share
SpecialFolder.LocalizedResources:
SpecialFolder.MyComputer:
SpecialFolder.MyDocuments: /Users/$USER
SpecialFolder.MyMusic: /Users/$USER/Music
SpecialFolder.MyPictures: /Users/$USER/Pictures
SpecialFolder.MyVideos:
SpecialFolder.NetworkShortcuts:
SpecialFolder.PrinterShortcuts:
SpecialFolder.ProgramFiles: /Applications
SpecialFolder.ProgramFilesX86:
SpecialFolder.Programs:
SpecialFolder.Recent:
SpecialFolder.Resources:
SpecialFolder.SendTo:
SpecialFolder.StartMenu:
SpecialFolder.Startup:
SpecialFolder.System: /System
SpecialFolder.SystemX86:
SpecialFolder.Templates:
SpecialFolder.UserProfile: /Users/$USER
SpecialFolder.Windows:
I have replaced my username with $USER.
Code Snippet from pogosama.
foreach(Environment.SpecialFolder f in Enum.GetValues(typeof(Environment.SpecialFolder)))
{
string commonAppData = Environment.GetFolderPath(f);
Console.WriteLine("{0}: {1}", f, commonAppData);
}
Console.ReadLine();
The stack pointer holds the address to the top of the stack. A stack allows functions to pass arguments stored on the stack to each other, and to create scoped variables. Scope in this context means that the variable is popped of the stack when the stack frame is gone, and/or when the function returns. Without a stack, you would need to use explicit memory addresses for everything. That would make it impossible (or at least severely difficult) to design high-level programming languages for the architecture. Also, each CPU mode usually have its own banked stack pointer. So when exceptions occur (interrupts for example), the exception handler routine can use its own stack without corrupting the user process.
I might be old-school about this, but I still frown on hotlinking. Maybe Google is the exception, but in general, it's really just good manners to host the files on your own server.
Try this:
=IF(NOT(ISERROR(MATCH(A3,worksheet2!A:A,0))),COUNTIF(worksheet2!A:A,A3),"No Match Found")
The pattern \d
might not be supported by your sed
. Try [0-9]
or [[:digit:]]
instead.
To only print the actual match (not the entire matching line), use a substitution.
sed -n 's/.*\([0-9][0-9]*G[0-9][0-9]*\).*/\1/p'
Simplified Java 8
IntelliJ suggests to simplify the top answer to the:
Arrays.sort(queries, Comparator.comparingDouble(a -> a[0]));
Ilmari Karonen has good advice, and I'd just like to generalize it a bit. In general, before you ask "how can I get a computer to do this?" ask "how would I do this?"
So, if someone gave you an empty Word document and asked you to create the triangles, how would you go about doing it? Whatever solution you come up with, it's usually not hard to translate it to Java (or any other programming language). It might not be the best solution, but (hopefully!) it'll work, and it may point you to a better solution.
So for instance, maybe you would say that you'd type out the base, then go up a line, then type the next highest line, etc. That suggests that you can do the same in Java -- create a list of Strings, base-to-top, and then reverse them. That might suggest that you can just create them in reverse order, and then not have to reverse them. And then that might suggest that you don't need the list anymore, since you'll just be creating and printing them out in the same order -- at which point you've come up with essentially Ilmari Karonen's advice.
Or, maybe you'd come up with another way of doing it -- maybe you'd come up with Ilmari Karonen's idea more directly. Regardless, it should help you solve this and many other problems.
First, write npm install --save nodemon then in package.json write the followings
"scripts": {
"server": "nodemon server.js"
},
then write
npm run server
First:
x/3 = (x/4) / (1-1/4)
Then figure out how to solve x/(1 - y):
x/(1-1/y)
= x * (1+y) / (1-y^2)
= x * (1+y) * (1+y^2) / (1-y^4)
= ...
= x * (1+y) * (1+y^2) * (1+y^4) * ... * (1+y^(2^i)) / (1-y^(2^(i+i))
= x * (1+y) * (1+y^2) * (1+y^4) * ... * (1+y^(2^i))
with y = 1/4:
int div3(int x) {
x <<= 6; // need more precise
x += x>>2; // x = x * (1+(1/2)^2)
x += x>>4; // x = x * (1+(1/2)^4)
x += x>>8; // x = x * (1+(1/2)^8)
x += x>>16; // x = x * (1+(1/2)^16)
return (x+1)>>8; // as (1-(1/2)^32) very near 1,
// we plus 1 instead of div (1-(1/2)^32)
}
Although it uses +
, but somebody already implements add by bitwise op.