You can detect the orientation change, but I don't think you can prevent it.
GPS, the Global Positioning System run by the United States Military, is free for civilian use, though the reality is that we're paying for it with tax dollars.
However, GPS on cell phones is a bit more murky. In general, it won't cost you anything to turn on the GPS in your cell phone, but when you get a location it usually involves the cell phone company in order to get it quickly with little signal, as well as get a location when the satellites aren't visible (since the gov't requires a fix even if the satellites aren't visible for emergency 911 purposes). It uses up some cellular bandwidth. This also means that for phones without a regular GPS receiver, you cannot use the GPS at all if you don't have cell phone service.
For this reason most cell phone companies have the GPS in the phone turned off except for emergency calls and for services they sell you (such as directions).
This particular kind of GPS is called assisted GPS (AGPS), and there are several levels of assistance used.
A normal GPS receiver listens to a particular frequency for radio signals. Satellites send time coded messages at this frequency. Each satellite has an atomic clock, and sends the current exact time as well.
The GPS receiver figures out which satellites it can hear, and then starts gathering those messages. The messages include time, current satellite positions, and a few other bits of information. The message stream is slow - this is to save power, and also because all the satellites transmit on the same frequency and they're easier to pick out if they go slow. Because of this, and the amount of information needed to operate well, it can take 30-60 seconds to get a location on a regular GPS.
When it knows the position and time code of at least 3 satellites, a GPS receiver can assume it's on the earth's surface and get a good reading. 4 satellites are needed if you aren't on the ground and you want altitude as well.
As you saw above, it can take a long time to get a position fix with a normal GPS. There are ways to speed this up, but unless you're carrying an atomic clock with you all the time, or leave the GPS on all the time, then there's always going to be a delay of between 5-60 seconds before you get a location.
In order to save cost, most cell phones share the GPS receiver components with the cellular components, and you can't get a fix and talk at the same time. People don't like that (especially when there's an emergency) so the lowest form of GPS does the following:
This saves a lot of money on the phone design, but it has a heavy load on cellular bandwidth, and with a lot of requests coming it requires a lot of fast servers. Still, overall it can be cheaper and faster to implement. They are reluctant, however, to release GPS based features on these phones due to this load - so you won't see turn by turn navigation here.
More recent designs include a full GPS chip. They still get data from the phone company - such as current location based on tower positioning, and current satellite locations - this provides sub 1 second fix times. This information is only needed once, and the GPS can keep track of everything after that with very little power. If the cellular network is unavailable, then they can still get a fix after awhile. If the GPS satellites aren't visible to the receiver, then they can still get a rough fix from the cellular towers.
But to completely answer your question - it's as free as the phone company lets it be, and so far they do not charge for it at all. I doubt that's going to change in the future. In the higher end phones with a full GPS receiver you may even be able to load your own software and access it, such as with mologogo on a motorola iDen phone - the J2ME development kit is free, and the phone is only $40 (prepaid phone with $5 credit). Unlimited internet is about $10 a month, so for $40 to start and $10 a month you can get an internet tracking system. (Prices circa August 2008)
It's only going to get cheaper and more full featured from here on out...
Re: Google maps and such
Yes, Google maps and all other cell phone mapping systems require a data connection of some sort at varying times during usage. When you move far enough in one direction, for instance, it'll request new tiles from its server. Your average phone doesn't have enough storage to hold a map of the US, nor the processor power to render it nicely. iPhone would be able to if you wanted to use the storage space up with maps, but given that most iPhones have a full time unlimited data plan most users would rather use that space for other things.
Essentially, use an <a>
element with an href
attr pointing to the phone number prefixed by tel:
. Note that pluses can be used to specify country code, and hyphens can be included simply for human eyes.
MDN Web Docs
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#Creating_a_phone_link
The HTML
<a>
element (or anchor element), along with its href attribute, creates a hyperlink to other web pages, files, locations within the same page, email addresses, or any other URL.[…]
Offering phone links is helpful for users viewing web documents and laptops connected to phones.
<a href="tel:+491570156">+49 157 0156</a>
IETF Documents
https://tools.ietf.org/html/rfc3966
The
tel
URI for Telephone NumbersThe "tel" URI has the following syntax:
telephone-uri
="tel:"
telephone-subscriber[…]
Examples
tel:+1-201-555-0123
: This URI points to a phone number in the United States. The hyphens are included to make the number more human readable; they separate country, area code and subscriber number.
tel:7042;phone-context=example.com
: The URI describes a local phone number valid within the context "example.com".
tel:863-1234;phone-context=+1-914-555
: The URI describes a local phone number that is valid within a particular phone prefix.
I've tried all the solutions above, but mine only worked on this way:
success: function (data) {
response($.map(data.slice (0,10), function(item) {
return {
value: item.nome
};
}));
},
An alternative answer that I don't think anyone else has covered.
If you have multiple PG clusters installed (as I do), then you can view those using pg_lsclusters
.
You should be able to see the version and cluster from the list displayed.
From there, you can then do this:
pg_dump --cluster=9.6/main books > books.out
Obviously, replace the version and cluster name with the appropriate one for your circumstances from what is returned by pg_lsclusters
separating the version and cluster with a /. This targets the specific cluster you wish to run against.
es6-promisify
converts callback-based functions to Promise-based functions.
const promisify = require('es6-promisify');
const promisedFn = promisify(callbackedFn, args);
Wow I am real late to this party but it has had activity 17 days ago It would seam we need to consider posting what version of Android we are using for an answer so as of now this answer works with Android 2.1 and above Go to RES/VALUES/STYLES and add the lines of code below and your cursor will be black
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<!--<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">-->
<!-- Customize your theme here. -->
<item name="colorControlActivated">@color/color_Black</item>
<!--Sets COLOR for the Cursor in EditText -->
</style>
You will need a this line of code in your RES/COLOR folder
<color name="color_Black">#000000</color>
Why post this late ? It might be nice to consider some form of categories for the many headed monster Android has become!
once I need to fix the height of a particular valued row by using inline CSS as following..
<tr><td colspan="4" style="height: 10px;">xxxyyyzzz</td></tr>
from re import search
from functools import wraps
def is_match(_lambda, pattern):
def wrapper(f):
@wraps(f)
def wrapped(self, *f_args, **f_kwargs):
if callable(_lambda) and search(pattern, (_lambda(self) or '')):
f(self, *f_args, **f_kwargs)
return wrapped
return wrapper
class MyTest(object):
def __init__(self):
self.name = 'foo'
self.surname = 'bar'
@is_match(lambda x: x.name, 'foo')
@is_match(lambda x: x.surname, 'foo')
def my_rule(self):
print 'my_rule : ok'
@is_match(lambda x: x.name, 'foo')
@is_match(lambda x: x.surname, 'bar')
def my_rule2(self):
print 'my_rule2 : ok'
test = MyTest()
test.my_rule()
test.my_rule2()
ouput: my_rule2 : ok
This can also be achieved with itertools.chain.from_iterable which will flatten the consecutive iterables:
import itertools
for item in itertools.chain.from_iterable(iterables):
# do something with item
Here is example of taking XML file from raw folder:
InputStream XmlFileInputStream = getResources().openRawResource(R.raw.taskslists5items); // getting XML
Then you can:
String sxml = readTextFile(XmlFileInputStream);
when:
public String readTextFile(InputStream inputStream) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
byte buf[] = new byte[1024];
int len;
try {
while ((len = inputStream.read(buf)) != -1) {
outputStream.write(buf, 0, len);
}
outputStream.close();
inputStream.close();
} catch (IOException e) {
}
return outputStream.toString();
}
I know this has already been answered, but I just spent more time than I care to admit coming up with single-line SQL statements to accomplish this, so I'll share them here in case anyone else needs to do the same:
-- Encode the string "TestData" in Base64 to get "VGVzdERhdGE="
SELECT
CAST(N'' AS XML).value(
'xs:base64Binary(xs:hexBinary(sql:column("bin")))'
, 'VARCHAR(MAX)'
) Base64Encoding
FROM (
SELECT CAST('TestData' AS VARBINARY(MAX)) AS bin
) AS bin_sql_server_temp;
-- Decode the Base64-encoded string "VGVzdERhdGE=" to get back "TestData"
SELECT
CAST(
CAST(N'' AS XML).value(
'xs:base64Binary("VGVzdERhdGE=")'
, 'VARBINARY(MAX)'
)
AS VARCHAR(MAX)
) ASCIIEncoding
;
I had to use a subquery-generated table in the first (encoding) query because I couldn't find any way to convert the original value ("TestData") to its hex string representation ("5465737444617461") to include as the argument to xs:hexBinary() in the XQuery statement.
I hope this helps someone!
Javascript doesn't have access to the user's filesystem for security reasons. FileReader
is only for files manually selected by the user.
This is an old post and I read through the answers. Still, I found it a bit too painful to output multi-line large text fields unaltered from SSMS. I ended up writing a small C# program for my needs, but got to thinking it could probably be done using the command line. Turns out, it is fairly easy to do so with PowerShell.
Start by installing the SqlServer
module from an administrative PowerShell.
Install-Module -Name SqlServer
Use Invoke-Sqlcmd
to run your query:
$Rows = Invoke-Sqlcmd -Query "select BigColumn from SomeTable where Id = 123" `
-As DataRows -MaxCharLength 1000000 -ConnectionString $ConnectionString
This will return an array of rows that you can output to the console as follows:
$Rows[0].BigColumn
Or output to a file as follows:
$Rows[0].BigColumn | Out-File -FilePath .\output.txt -Encoding UTF8
The result is a beautiful un-truncated text written to a file for viewing/editing. I am sure there is a similar command to save back the text to SQL Server, although that seems like a different question.
EDIT: It turns out that there was an answer by @dvlsc that described this approach as a secondary solution. I think because it was listed as a secondary answer, is the reason I missed it in the first place. I am going to leave my answer which focuses on the PowerShell approach, but wanted to at least give credit where it was due.
If you are using email password then you should replace it with app password.for setting APP password you need to enable the 2 step authentication before setting password which can be disabled later.
Also make sure that you have allowed less secure app in setting section.For additional info you can follow how to here
The issue is with your project which is not able to complete maven build. Steps to follow :
This will update your maven build and will surely remove your errors with pom.xml
$('<input>').attr('type','hidden').appendTo('form');
To answer your second question:
$('<input>').attr({
type: 'hidden',
id: 'foo',
name: 'bar'
}).appendTo('form');
The following are rough guidelines and educated guesses based on experience. You should timeit
or profile your concrete use case to get hard numbers, and those numbers may occasionally disagree with the below.
A list comprehension is usually a tiny bit faster than the precisely equivalent for
loop (that actually builds a list), most likely because it doesn't have to look up the list and its append
method on every iteration. However, a list comprehension still does a bytecode-level loop:
>>> dis.dis(<the code object for `[x for x in range(10)]`>)
1 0 BUILD_LIST 0
3 LOAD_FAST 0 (.0)
>> 6 FOR_ITER 12 (to 21)
9 STORE_FAST 1 (x)
12 LOAD_FAST 1 (x)
15 LIST_APPEND 2
18 JUMP_ABSOLUTE 6
>> 21 RETURN_VALUE
Using a list comprehension in place of a loop that doesn't build a list, nonsensically accumulating a list of meaningless values and then throwing the list away, is often slower because of the overhead of creating and extending the list. List comprehensions aren't magic that is inherently faster than a good old loop.
As for functional list processing functions: While these are written in C and probably outperform equivalent functions written in Python, they are not necessarily the fastest option. Some speed up is expected if the function is written in C too. But most cases using a lambda
(or other Python function), the overhead of repeatedly setting up Python stack frames etc. eats up any savings. Simply doing the same work in-line, without function calls (e.g. a list comprehension instead of map
or filter
) is often slightly faster.
Suppose that in a game that I'm developing I need to draw complex and huge maps using for loops. This question would be definitely relevant, for if a list-comprehension, for example, is indeed faster, it would be a much better option in order to avoid lags (Despite the visual complexity of the code).
Chances are, if code like this isn't already fast enough when written in good non-"optimized" Python, no amount of Python level micro optimization is going to make it fast enough and you should start thinking about dropping to C. While extensive micro optimizations can often speed up Python code considerably, there is a low (in absolute terms) limit to this. Moreover, even before you hit that ceiling, it becomes simply more cost efficient (15% speedup vs. 300% speed up with the same effort) to bite the bullet and write some C.
via https://speakerdeck.com/anguscroll/es6-uncensored by Angus Croll
It turns out, we can use spread
operator:
var myArr = [...mySet];
Or, alternatively, use Array.from
:
var myArr = Array.from(mySet);
Next release of ASP.NET MVC (available in January or so) should have MSBuild task that compiles views, so you might want to wait.
See announcement
It seems many users are having issues with this. Here are some fixes:
Right click on your task > "Properties" > "Actions" > "Edit" | Put ONLY the file name under 'Program/Script', no quotes and ONLY the directory under 'Start in' as described, again no quotes.
Right click on your task > "Properties" > "General" | Test with any/all of the following:
This is a function that I use. Created it once so I always have this functionality:
function getDir(){
$directory = dirname(__FILE__);
$directory = explode("/",$directory);
$findTarget = 0;
$targetPath = "";
foreach($directory as $dir){
if($findTarget == 1){
$targetPath = "".$targetPath."/".$dir."";
}
if($dir == "public_html"){
$findTarget = 1;
}
}
return "http://www.".$_SERVER['SERVER_NAME']."".$targetPath."";
}
In shell, run:
pip install Pillow
Attention: PIL is deprecated, and pillow is the successor.
These messages are rather misleading and understandably a source of confusion. Older Ubuntu versions used Libav which is a fork of the FFmpeg project. FFmpeg returned in Ubuntu 15.04 "Vivid Vervet".
The fork was basically a non-amicable result of conflicting personalities and development styles within the FFmpeg community. It is worth noting that the maintainer for Debian/Ubuntu switched from FFmpeg to Libav on his own accord due to being involved with the Libav fork.
ffmpeg
vs the fake oneFor a while both Libav and FFmpeg separately developed their own version of ffmpeg
.
Libav then renamed their bizarro ffmpeg
to avconv
to distance themselves from the FFmpeg project. During the transition period the "not developed anymore" message was displayed to tell users to start using avconv
instead of their counterfeit version of ffmpeg
. This confused users into thinking that FFmpeg (the project) is dead, which is not true. A bad choice of words, but I can't imagine Libav not expecting such a response by general users.
This message was removed upstream when the fake "ffmpeg
" was finally removed from the Libav source, but, depending on your version, it can still show up in Ubuntu because the Libav source Ubuntu uses is from the ffmpeg-to-avconv transition period.
In June 2012, the message was re-worded for the package libav - 4:0.8.3-0ubuntu0.12.04.1
. Unfortunately the new "deprecated" message has caused additional user confusion.
Starting with Ubuntu 15.04 "Vivid Vervet", FFmpeg's ffmpeg
is back in the repositories again.
To further complicate matters, Libav chose a name that was historically used by FFmpeg to refer to its libraries (libavcodec, libavformat, etc). For example the libav-user mailing list, for questions and discussions about using the FFmpeg libraries, is unrelated to the Libav project.
If you are using avconv
then you are using Libav. If you are using ffmpeg
you could be using FFmpeg or Libav. Refer to the first line in the console output to tell the difference: the copyright notice will either mention FFmpeg or Libav.
Secondly, the version numbering schemes differ. Each of the FFmpeg or Libav libraries contains a version.h
header which shows a version number. FFmpeg will end in three digits, such as 57.67.100, and Libav will end in one digit such as 57.67.0. You can also view the library version numbers by running ffmpeg
or avconv
and viewing the console output.
ffmpeg
The real ffmpeg
is in the repository, so you can install it with:
apt-get install ffmpeg
Your options are:
ffmpeg
,ffmpeg
,These methods are non-intrusive, reversible, and will not interfere with the system or any repository packages.
Another possible option is to upgrade to Ubuntu 15.04 "Vivid Vervet" or newer and just use ffmpeg
from the repository.
For an interesting blog article on the situation, as well as a discussion about the main technical differences between the projects, see The FFmpeg/Libav situation.
random_int()
and the given random_str()
below.random_int()
, use random_compat.Since you are generating a password, you need to ensure that the password you generate is unpredictable, and the only way to ensure this property is present in your implementation is to use a cryptographically secure pseudorandom number generator (CSPRNG).
The requirement for a CSPRNG can be relaxed for the general case of random strings, but not when security is involved.
The simple, secure, and correct answer to password generation in PHP is to use RandomLib and don't reinvent the wheel. This library has been audited by industry security experts, as well as myself.
For developers who prefer inventing your own solution, PHP 7.0.0 will provide random_int()
for this purpose. If you're still on PHP 5.x, we wrote a PHP 5 polyfill for random_int()
so you can use the new API before PHP 7 is released. Using our random_int()
polyfill is probably safer than writing your own implementation.
With a secure random integer generator on hand, generating a secure random string is easier than pie:
<?php
/**
* Generate a random string, using a cryptographically secure
* pseudorandom number generator (random_int)
*
* For PHP 7, random_int is a PHP core function
* For PHP 5.x, depends on https://github.com/paragonie/random_compat
*
* @param int $length How many characters do we want?
* @param string $keyspace A string of all possible characters
* to select from
* @return string
*/
function random_str(
$length,
$keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
) {
$str = '';
$max = mb_strlen($keyspace, '8bit') - 1;
if ($max < 1) {
throw new Exception('$keyspace must be at least two characters long');
}
for ($i = 0; $i < $length; ++$i) {
$str .= $keyspace[random_int(0, $max)];
}
return $str;
}
Another solution to the issue above is to set each string to a variable, call the function with variables denoted by a literal dollar sign \$
. Then in the function use eval
to read the variable and output as expected.
#!/usr/bin/ksh
myFunction()
{
eval string1="$1"
eval string2="$2"
eval string3="$3"
echo "string1 = ${string1}"
echo "string2 = ${string2}"
echo "string3 = ${string3}"
}
var1="firstString"
var2="second string with spaces"
var3="thirdString"
myFunction "\${var1}" "\${var2}" "\${var3}"
exit 0
Output is then:
string1 = firstString
string2 = second string with spaces
string3 = thirdString
In trying to solve a similar problem to this, I was running into the issue of UNIX thinking my variables were space delimeted. I was trying to pass a pipe delimited string to a function using awk
to set a series of variables later used to create a report. I initially tried the solution posted by ghostdog74 but could not get it to work as not all of my parameters were being passed in quotes. After adding double-quotes to each parameter it then began to function as expected.
Below is the before state of my code and fully functioning after state.
Before - Non Functioning Code
#!/usr/bin/ksh
#*******************************************************************************
# Setup Function To Extract Each Field For The Error Report
#*******************************************************************************
getField(){
detailedString="$1"
fieldNumber=$2
# Retrieves Column ${fieldNumber} From The Pipe Delimited ${detailedString}
# And Strips Leading And Trailing Spaces
echo ${detailedString} | awk -F '|' -v VAR=${fieldNumber} '{ print $VAR }' | sed 's/^[ \t]*//;s/[ \t]*$//'
}
while read LINE
do
var1="$LINE"
# Below Does Not Work Since There Are Not Quotes Around The 3
iputId=$(getField "${var1}" 3)
done<${someFile}
exit 0
After - Functioning Code
#!/usr/bin/ksh
#*******************************************************************************
# Setup Function To Extract Each Field For The Report
#*******************************************************************************
getField(){
detailedString="$1"
fieldNumber=$2
# Retrieves Column ${fieldNumber} From The Pipe Delimited ${detailedString}
# And Strips Leading And Trailing Spaces
echo ${detailedString} | awk -F '|' -v VAR=${fieldNumber} '{ print $VAR }' | sed 's/^[ \t]*//;s/[ \t]*$//'
}
while read LINE
do
var1="$LINE"
# Below Now Works As There Are Quotes Around The 3
iputId=$(getField "${var1}" "3")
done<${someFile}
exit 0
You must set the height of the container explicitly
#container {
height:100%;
width:100%;
position:absolute;
}
DAO is native to Access and by far the best for general use. ADO has its place, but it is unlikely that this is it.
Dim rs As DAO.Recordset
Dim db As Database
Dim strSQL as String
Set db=CurrentDB
strSQL = "select * from table where some condition"
Set rs = db.OpenRecordset(strSQL)
Do While Not rs.EOF
rs.Edit
rs!SomeField = "Abc"
rs!OtherField = 2
rs!ADate = Date()
rs.Update
rs.MoveNext
Loop
Slightly building upon the answers of other people. Now allowing you to specify the file you want to read from and the variable you want the result put into:
@echo off
for /f "delims=" %%x in (%2) do (
set %1=%%x
exit /b
)
This means you can use the above like this (assuming you called it getline.bat)
c:\> dir > test-file
c:\> getline variable test-file
c:\> set variable
variable= Volume in drive C has no label.
Updated answer
When I originally answered this question in 2014, there was no requirement to not scale the image up in the case of a small image. (The question was edited in 2015.) If you have such a requirement, you will indeed need to compare the image's size to that of the imageView and use either UIViewContentModeCenter
(in the case of an image smaller than the imageView) or UIViewContentModeScaleAspectFit
in all other cases.
Original answer
Setting the imageView's contentMode to UIViewContentModeScaleAspectFit
was enough for me. It seems to center the images as well. I'm not sure why others are using logic based on the image. See also this question: iOS aspect fit and center
You are looking for the command scandir.
$path = '/tmp';
$files = scandir($path);
Following code will remove .
and ..
from the returned array from scandir
:
$files = array_diff(scandir($path), array('.', '..'));
Binding to the button would not resolve for submissions outside of pressing the button e.g. pressing enter
If you don't pass any argument then even in that case args gets initialized but without any item/element. Try the following one, you will get the same effect:
public static void main(String[] args) throws InterruptedException {
String [] dummy= new String [] {};
if(dummy[0] == null)
{
System.out.println("Proper Usage is: java program filename");
System.exit(0);
}
}
By far the most convenient way is using this:
df.orderBy(df.column_name.desc())
Doesn't require special imports.
This command will help to pull from the repository as the different user:
git pull https://[email protected]/projectfolder/projectname.git master
It is a workaround, when you are using same machine that someone else used before you, and had saved credentials
One more solution is possible.
int number = Integer.parseInt(new DecimalFormat("#").format(decimalNumber))
Example:
Integer.parseInt(new DecimalFormat("#").format(Double.parseDouble("010.021")))
Output
10
use User::get(['id', 'name', 'email'])
, it will return you a collection with the specified columns and if you want to make it an array, just use toArray()
after the get()
method like so:
User::get(['id', 'name', 'email'])->toArray()
Most of the times, you won't need to convert the collection to an array because collections are actually arrays on steroids and you have easy-to-use methods to manipulate the collection.
To anyone facing this for iOS/Mac/Xcode,
If you are facing this while integrating C/C++ headers in XCode with Objective-C, just change the extension of your file from .mm to .m
And if you are using typescript (gulpfile.ts
) then do this for yargs
(building on @Caio Cunha's excellent answer https://stackoverflow.com/a/23038290/1019307 and other comments above):
npm install --save-dev yargs
typings install dt~yargs --global --save
.ts
filesAdd this to the .ts files:
import { argv } from 'yargs';
...
let debug: boolean = argv.debug;
This has to be done in each .ts file individually (even the tools/tasks/project
files that are imported into the gulpfile.ts/js
).
gulp build.dev --debug
Or under npm
pass the arg through to gulp:
npm run build.dev -- --debug
The answers by Richard and Jason are sort of in the right direction. However what you should be doing is computing the effective permissions for the user identity running your code. None of the examples above correctly account for group membership for example.
I'm pretty sure Keith Brown had some code to do this in his wiki version (offline at this time) of The .NET Developers Guide to Windows Security. This is also discussed in reasonable detail in his Programming Windows Security book.
Computing effective permissions is not for the faint hearted and your code to attempt creating a file and catching the security exception thrown is probably the path of least resistance.
First, you have to write in XML layout:
android:visibility="invisible" <!--or set VISIBLE-->
then use this to show it using Java:
myimage.setVisibility(SHOW); //HIDE
you need to add jersey-bundle-1.17.1.jar
to lib of project
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<!-- <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class> -->
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<!-- <param-name>jersey.config.server.provider.packages</param-name> -->
<param-value>package.package.test</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
It is possible to make a link fill the entire div which gives the appearance of making the div clickable.
CSS:
#my-div {
background-color: #f00;
width: 200px;
height: 200px;
}
a.fill-div {
display: block;
height: 100%;
width: 100%;
text-decoration: none;
}
HTML:
<div id="my-div">
<a href="#" class="fill-div"></a>
</div>
I have provided two approaches to solve the same issue,
Solution 1: This approach includes 2 steps, first create a temporary table with specified data type, next insert the value from the existing data table.
CREATE TABLE #TempStudent(tempID int, tempName varchar(MAX) )
INSERT INTO #TempStudent(tempID, tempName) SELECT id, studName FROM students where id =1
SELECT * FROM #TempStudent
Solution 2: This approach is simple, where you can directly insert the values to temporary table, where automatically the system take care of creating the temp table with the same data type of original table.
SELECT id, studName INTO #TempStudent FROM students where id =1
SELECT * FROM #TempStudent
Update 2017:
Authbind grants trust to the user/group and provides control over per-port access, and supports both IPv4 and IPv6 (IPv6 support has been added as of late).
Install: apt-get install authbind
Configure access to relevant ports, e.g. 80 and 443 for all users and groups:
sudo touch /etc/authbind/byport/80
sudo touch /etc/authbind/byport/443
sudo chmod 777 /etc/authbind/byport/80
sudo chmod 777 /etc/authbind/byport/443
Execute your command via authbind
(optionally specifying --deep
or other arguments, see the man page):
authbind --deep /path/to/binary command line args
e.g.
authbind --deep java -jar SomeServer.jar
As a follow-up to Joshua's fabulous (=not recommended unless you know what you do) recommendation to hack the kernel:
I've first posted it here.
Simple. With a normal or old kernel, you don't.
As pointed out by others, iptables can forward a port.
As also pointed out by others, CAP_NET_BIND_SERVICE can also do the job.
Of course CAP_NET_BIND_SERVICE will fail if you launch your program from a script, unless you set the cap on the shell interpreter, which is pointless, you could just as well run your service as root...
e.g. for Java, you have to apply it to the JAVA JVM
sudo /sbin/setcap 'cap_net_bind_service=ep' /usr/lib/jvm/java-8-openjdk/jre/bin/java
Obviously, that then means any Java program can bind system ports.
Dito for mono/.NET.
I'm also pretty sure xinetd isn't the best of ideas.
But since both methods are hacks, why not just lift the limit by lifting the restriction ?
Nobody said you have to run a normal kernel, so you can just run your own.
You just download the source for the latest kernel (or the same you currently have). Afterwards, you go to:
/usr/src/linux-<version_number>/include/net/sock.h:
There you look for this line
/* Sockets 0-1023 can't be bound to unless you are superuser */
#define PROT_SOCK 1024
and change it to
#define PROT_SOCK 0
if you don't want to have an insecure ssh situation, you alter it to this: #define PROT_SOCK 24
Generally, I'd use the lowest setting that you need, e.g 79 for http, or 24 when using SMTP on port 25.
That's already all.
Compile the kernel, and install it.
Reboot.
Finished - that stupid limit is GONE, and that also works for scripts.
Here's how you compile a kernel:
https://help.ubuntu.com/community/Kernel/Compile
# You can get the kernel-source via package linux-source, no manual download required
apt-get install linux-source fakeroot
mkdir ~/src
cd ~/src
tar xjvf /usr/src/linux-source-<version>.tar.bz2
cd linux-source-<version>
# Apply the changes to PROT_SOCK define in /include/net/sock.h
# Copy the kernel config file you are currently using
cp -vi /boot/config-`uname -r` .config
# Install ncurses libary, if you want to run menuconfig
apt-get install libncurses5 libncurses5-dev
# Run menuconfig (optional)
make menuconfig
# Define the number of threads you wanna use when compiling (should be <number CPU cores> - 1), e.g. for quad-core
export CONCURRENCY_LEVEL=3
# Now compile the custom kernel
fakeroot make-kpkg --initrd --append-to-version=custom kernel-image kernel-headers
# And wait a long long time
cd ..
In a nutshell, use iptables if you want to stay secure, compile the kernel if you want to be sure this restriction never bothers you again.
#getsebool -a
//httpd_can_network_connect off
#setsebool httpd_can_network_connect on
#getsebool httpd_can_network_connect
#service zabbix-server restart
i had the same problem here. go to your Java Control Panel and Settings... Uncheck 'Keep temporary files on my computer'. Apply changes and try again your .jnlp
Note: Tested on different machines; Windows Server 2012, Windows Server 2008 and Windows 7 64bit. Java Version: 1.7++ since my jnlp app is built on 1.7
Please let me know your feedback too. :D
In R you can use the refresh method, but to start with we navigate to a url using navigate method:
remDr$navigate("https://...")
remDr$refresh()
jQuery Solution!
Demo: http://jsfiddle.net/69wP6/2/
Another Demo Below(updated!)
I needed something similar in a case when i had some fixed Options and i wanted one other option to be editable! In this case i made a hidden input that would overlap the select option and would be editable and used jQuery to make it all work seamlessly.
I am sharing the fiddle with all of you!
HTML
<div id="billdesc">
<select id="test">
<option class="non" value="option1">Option1</option>
<option class="non" value="option2">Option2</option>
<option class="editable" value="other">Other</option>
</select>
<input class="editOption" style="display:none;"></input>
</div>
CSS
body{
background: blue;
}
#billdesc{
padding-top: 50px;
}
#test{
width: 100%;
height: 30px;
}
option {
height: 30px;
line-height: 30px;
}
.editOption{
width: 90%;
height: 24px;
position: relative;
top: -30px
}
jQuery
var initialText = $('.editable').val();
$('.editOption').val(initialText);
$('#test').change(function(){
var selected = $('option:selected', this).attr('class');
var optionText = $('.editable').text();
if(selected == "editable"){
$('.editOption').show();
$('.editOption').keyup(function(){
var editText = $('.editOption').val();
$('.editable').val(editText);
$('.editable').html(editText);
});
}else{
$('.editOption').hide();
}
});
Edit : Added some simple touches design wise, so people can clearly see where the input ends!
JS Fiddle : http://jsfiddle.net/69wP6/4/
I think you would like to learn ajax
first, try this: Ajax Tutorial
If you want to know how ajax works, it is not a good way to use jQuery directly. I support to learn the native way to send a ajax request to the server, see something about XMLHttpRequest
:
var xhr = new XMLHttpReuqest();
xhr.open("GET", "http://some.com");
xhr.onreadystatechange = handler; // do something here...
xhr.send();
<table id="myData">
</table>
<script type="text/javascript">
$('#search').click(function() {
alert("submit handler has fired");
$.ajax({
type: 'POST',
url: 'cityResults.htm',
data: $('#cityDetails').serialize(),
success: function(data){
$.each(data, function( index, value ) {
var row = $("<tr><td>" + value.city + "</td><td>" + value.cStatus + "</td></tr>");
$("#myData").append(row);
});
},
error: function(jqXHR, textStatus, errorThrown){
alert('error: ' + textStatus + ': ' + errorThrown);
}
});
return false;//suppress natural form submission
});
</script>
loop through the data and append it to a table like the code above.
If you are using Query builder then you may use a blow
DB::table(Newsletter Subscription)
->select('*')
->whereIn('id', $send_users_list)
->get()
If you are working with Eloquent then you can use as below
$sendUsersList = Newsletter Subscription:: select ('*')
->whereIn('id', $send_users_list)
->get();
I modified the code to output phone in this format Value: +38 (095) 411-22-23 Here you can check it enter link description here
var myApp = angular.module('myApp', []);
myApp.controller('MyCtrl', function($scope) {
$scope.currencyVal;
});
myApp.directive('phoneInput', function($filter, $browser) {
return {
require: 'ngModel',
link: function($scope, $element, $attrs, ngModelCtrl) {
var listener = function() {
var value = $element.val().replace(/[^0-9]/g, '');
$element.val($filter('tel')(value, false));
};
// This runs when we update the text field
ngModelCtrl.$parsers.push(function(viewValue) {
return viewValue.replace(/[^0-9]/g, '').slice(0,12);
});
// This runs when the model gets updated on the scope directly and keeps our view in sync
ngModelCtrl.$render = function() {
$element.val($filter('tel')(ngModelCtrl.$viewValue, false));
};
$element.bind('change', listener);
$element.bind('keydown', function(event) {
var key = event.keyCode;
// If the keys include the CTRL, SHIFT, ALT, or META keys, or the arrow keys, do nothing.
// This lets us support copy and paste too
if (key == 91 || (15 < key && key < 19) || (37 <= key && key <= 40)){
return;
}
$browser.defer(listener); // Have to do this or changes don't get picked up properly
});
$element.bind('paste cut', function() {
$browser.defer(listener);
});
}
};
});
myApp.filter('tel', function () {
return function (tel) {
console.log(tel);
if (!tel) { return ''; }
var value = tel.toString().trim().replace(/^\+/, '');
if (value.match(/[^0-9]/)) {
return tel;
}
var country, city, num1, num2, num3;
switch (value.length) {
case 1:
case 2:
case 3:
city = value;
break;
default:
country = value.slice(0, 2);
city = value.slice(2, 5);
num1 = value.slice(5,8);
num2 = value.slice(8,10);
num3 = value.slice(10,12);
}
if(country && city && num1 && num2 && num3){
return ("+" + country+" (" + city + ") " + num1 +"-" + num2 + "-" + num3).trim();
}
else if(country && city && num1 && num2) {
return ("+" + country+" (" + city + ") " + num1 +"-" + num2).trim();
}else if(country && city && num1) {
return ("+" + country+" (" + city + ") " + num1).trim();
}else if(country && city) {
return ("+" + country+" (" + city ).trim();
}else if(country ) {
return ("+" + country).trim();
}
};
});
Here's one simple way to ignore everything but valid brainfuck characters:
#define BF_VALID "+-><[].,"
if (strchr(BF_VALID, c))
code[n++] = c;
You can use the sort
command:
sort -k2 -n yourfile
-n
,--numeric-sort
compare according to string numerical value
For example:
$ cat ages.txt
Bob 12
Jane 48
Mark 3
Tashi 54
$ sort -k2 -n ages.txt
Mark 3
Bob 12
Jane 48
Tashi 54
I tried another way
Say the table has values
1 M510
2 M615
3 M515
4 M612
5 M510MM
6 M615NN
7 M515OO
8 M612PP
9 A
10 B
11 C
12 D
Here cols 1 to 8 are valid while the rest of them are invalid
SELECT COL_VAL
FROM SO_LIKE_TABLE SLT
WHERE (SELECT DECODE(SUM(CASE
WHEN INSTR(SLT.COL_VAL, COLUMN_VALUE) > 0 THEN
1
ELSE
0
END),
0,
'FALSE',
'TRUE')
FROM TABLE(SYS.DBMS_DEBUG_VC2COLl('M510', 'M615', 'M515', 'M612'))) =
'TRUE'
What I have done is using the INSTR function, I have tried to find is the value in table matches with any of the values as input. In case it does, it will return it's index, i.e. greater than ZERO. In case the table's value does not match with any of the input, then it will return ZERO. This index I have added up, to indicate successful match.
It seems to be working.
Hope it helps.
You only need the async
pipe:
<li *ngFor="let afd of afdeling | async">
{{afd.patientid}}
</li>
always use the async
pipe when dealing with Observables directly without explicitly unsubscribe.
In the Latest Xcode version 12+ Follow the below steps, I found here https://handyopinion.com/solution-failed-to-load-info-plist-from-bundle-at-path-in-xcode/
1.
2.
It will navigate to the Derived Data folder then you can remove the content of the folder.
span::before,
span::after {
content: '';
display: block;
height: 0;
width: 0;
}
span::before{
margin-top:-6px;
}
span::after{
margin-bottom:-8px;
}
Find out the margin-top and margin-bottom negative margins with this tool: http://text-crop.eightshapes.com/
The tool also gives you SCSS, LESS and Stylus examples. You can read more about it here: https://medium.com/eightshapes-llc/cropping-away-negative-impacts-of-line-height-84d744e016ce
simple and easy
Locale locale = new Locale("en", "US");
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
conf.locale = locale;
res.updateConfiguration(conf, dm);
where "en" is language code and "US" is country code.
If you want to do this outside of the cqlsh
tool you can query the schema_keyspaces
table in the system
keyspace. There's also a table called schema_columnfamilies
which contains information about all tables.
The DESCRIBE
and SHOW
commands only work in cqlsh
and cassandra-cli
.
Remove some of your textarea class like
<textarea name="Address" rows="3" class="input-text full-width" placeholder="Your Address" ></textarea>
To
<textarea name="Address" rows="3" class="full-width" placeholder="Your Address" ></textarea>
It's dependent on your template (Purchased Template).
The developer has included some JavaScript to get the value from correct object on UI,
but class like input-text
just finds only $('input[type=text]')
, that's why.
There are 3 ways to allow cross domain origin (excluding jsonp
):
1) Set the header in the page directly using a templating language like PHP. Keep in mind there can be no HTML before your header or it will fail.
<?php header("Access-Control-Allow-Origin: http://example.com"); ?>
2) Modify the server configuration file (apache.conf
) and add this line. Note that "*"
represents allow all. Some systems might also need the credential set. In general allow all access is a security risk and should be avoided:
Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Credentials true
3) To allow multiple domains on Apache web servers add the following to your config file
<IfModule mod_headers.c>
SetEnvIf Origin "http(s)?://(www\.)?(example.org|example.com)$" AccessControlAllowOrigin=$0$1
Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header set Access-Control-Allow-Credentials true
</IfModule>
4) For development use only hack your browser and allow unlimited CORS using the Chrome Allow-Control-Allow-Origin extension
5) Disable CORS in Chrome: Quit Chrome completely. Open a terminal and execute the following. Just be cautious you are disabling web security:
open -a Google\ Chrome --args --disable-web-security --user-data-dir
Which approach you use, of course, depends on what your end goal is. If you want to submit the results with a form then using native form elements means you don't have to use scripting to submit. Also, if scripting is turned off then the fallback still works without the fancy grow-shrink effects. If you want to get the plain text out of a contenteditable element you can always also use scripting like node.textContent to strip out the html that the browsers insert in the user input.
This version uses native form elements with slight refinements on some of the previous posts.
It allows the content to shrink as well.
Use this in combination with CSS for better control.
<html>
<textarea></textarea>
<br>
<input type="text">
<style>
textarea {
width: 300px;
min-height: 100px;
}
input {
min-width: 300px;
}
<script>
document.querySelectorAll('input[type="text"]').forEach(function(node) {
var minWidth = parseInt(getComputedStyle(node).minWidth) || node.clientWidth;
node.style.overflowX = 'auto'; // 'hidden'
node.onchange = node.oninput = function() {
node.style.width = minWidth + 'px';
node.style.width = node.scrollWidth + 'px';
};
});
You can use something similar with <textarea> elements
document.querySelectorAll('textarea').forEach(function(node) {
var minHeight = parseInt(getComputedStyle(node).minHeight) || node.clientHeight;
node.style.overflowY = 'auto'; // 'hidden'
node.onchange = node.oninput = function() {
node.style.height = minHeight + 'px';
node.style.height = node.scrollHeight + 'px';
};
});
This doesn't flicker on Chrome, results may vary on other browsers, so test.
package com.test.utitlity;
import java.io.IOException;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class readExcel extends globalVariables {
/**
* @param args
* @throws IOException
*/
public static void readExcel(int rowcounter) throws IOException{
XSSFWorkbook srcBook = new XSSFWorkbook("./prop.xlsx");
XSSFSheet sourceSheet = srcBook.getSheetAt(0);
int rownum=rowcounter;
XSSFRow sourceRow = sourceSheet.getRow(rownum);
XSSFCell cell1=sourceRow.getCell(0);
XSSFCell cell2=sourceRow.getCell(1);
XSSFCell cell3=sourceRow.getCell(2);
System.out.println(cell1);
System.out.println(cell2);
System.out.println(cell3);
}
}
Here is an overview in a table format in order to show the differences between Pool.apply
, Pool.apply_async
, Pool.map
and Pool.map_async
. When choosing one, you have to take multi-args, concurrency, blocking, and ordering into account:
| Multi-args Concurrence Blocking Ordered-results
---------------------------------------------------------------------
Pool.map | no yes yes yes
Pool.map_async | no yes no yes
Pool.apply | yes no yes no
Pool.apply_async | yes yes no no
Pool.starmap | yes yes yes yes
Pool.starmap_async| yes yes no no
Pool.imap
and Pool.imap_async
– lazier version of map and map_async.
Pool.starmap
method, very much similar to map method besides it acceptance of multiple arguments.
Async
methods submit all the processes at once and retrieve the results once they are finished. Use get method to obtain the results.
Pool.map
(or Pool.apply
)methods are very much similar to Python built-in map(or apply). They block the main process until all the processes complete and return the result.
Is called for a list of jobs in one time
results = pool.map(func, [1, 2, 3])
Can only be called for one job
for x, y in [[1, 1], [2, 2]]:
results.append(pool.apply(func, (x, y)))
def collect_result(result):
results.append(result)
Is called for a list of jobs in one time
pool.map_async(func, jobs, callback=collect_result)
Can only be called for one job and executes a job in the background in parallel
for x, y in [[1, 1], [2, 2]]:
pool.apply_async(worker, (x, y), callback=collect_result)
Is a variant of pool.map
which support multiple arguments
pool.starmap(func, [(1, 1), (2, 1), (3, 1)])
A combination of starmap() and map_async() that iterates over iterable of iterables and calls func with the iterables unpacked. Returns a result object.
pool.starmap_async(calculate_worker, [(1, 1), (2, 1), (3, 1)], callback=collect_result)
Find complete documentation here: https://docs.python.org/3/library/multiprocessing.html
I see 2 easy options:
gradient option:
html {
min-height:100%;
background:linear-gradient(0deg, rgba(255, 0, 150, 0.3), rgba(255, 0, 150, 0.3)), url(http://lorempixel.com/800/600/nature/2);
background-size:cover;
}
shadow option:
html {
min-height:100%;
background:url(http://lorempixel.com/800/600/nature/2);
background-size:cover;
box-shadow:inset 0 0 0 2000px rgba(255, 0, 150, 0.3);
}
an old codepen of mine with few examples
a third option
The
background-blend-mode
CSS property sets how an element's background images should blend with each other and with the element's background color.
html {
min-height:100%;
background:url(http://lorempixel.com/800/600/nature/2) rgba(255, 0, 150, 0.3);
background-size:cover;
background-blend-mode: multiply;
}
Use this SQL:
SELECT DATE_FORMAT(date_column_here,'%d/%m/%Y') FROM table_name;
// Swift 2
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
let orientation: UIInterfaceOrientationMask =
[UIInterfaceOrientationMask.Portrait, UIInterfaceOrientationMask.PortraitUpsideDown]
return orientation
}
To do this for oracle sql, the syntax would be:
,SUBSTR(col,INSTR(col,'-',1,2)+1) AS new_field
for this example, I look for the second '-' and take the substring to the end
Always : If you always want vertical scrollbar, use overflow-y: scroll;
<div style="overflow-y: scroll;">
......
</div>
When needed: If you only want vertical scrollbar when needed, use overflow-y: auto;
(You need to specify a height in this case)
<div style="overflow-y: auto; height:150px; ">
....
</div>
The return type of a lambda (in C++11) can be deduced, but only when there is exactly one statement, and that statement is a return
statement that returns an expression (an initializer list is not an expression, for example). If you have a multi-statement lambda, then the return type is assumed to be void.
Therefore, you should do this:
remove_if(rawLines.begin(), rawLines.end(), [&expression, &start, &end, &what, &flags](const string& line) -> bool
{
start = line.begin();
end = line.end();
bool temp = boost::regex_search(start, end, what, expression, flags);
return temp;
})
But really, your second expression is a lot more readable.
This library helped me, I had a dict list of nested keys with the same name but with different values, every other solution kept overriding those nested keys.
https://pypi.org/project/deepmerge/
from deepmerge import always_merger
def process_parms(args):
temp_list = []
for x in args:
with open(x, 'r') as stream:
temp_list.append(yaml.safe_load(stream))
return always_merger.merge(*temp_list)
for jQuery 1.6 or higher:
if ($('input.checkbox_check').prop('checked')) {
//blah blah
}
the cross-browser-compatible way to determine if a checkbox is checked is to use the property https://api.jquery.com/prop/
Be aware that the result may be slightly different than you expect.
NOW()
returns a DATETIME
.
And INTERVAL
works as named, e.g. INTERVAL 1 DAY = 24 hours
.
So if your script is cron'd to run at 03:00
, it will miss the first three hours of records from the 'oldest' day
.
To get the whole day use CURDATE() - INTERVAL 1 DAY
. This will get back to the beginning of the previous day regardless of when the script is run.
If you want to fit other type of models, like a dose-response curve using logistic models you would also need to create more data points with the function predict if you want to have a smoother regression line:
fit: your fit of a logistic regression curve
#Create a range of doses:
mm <- data.frame(DOSE = seq(0, max(data$DOSE), length.out = 100))
#Create a new data frame for ggplot using predict and your range of new
#doses:
fit.ggplot=data.frame(y=predict(fit, newdata=mm),x=mm$DOSE)
ggplot(data=data,aes(x=log10(DOSE),y=log(viability)))+geom_point()+
geom_line(data=fit.ggplot,aes(x=log10(x),y=log(y)))
Here is another way I figured it out:
const x = this.dealer;
switch (true) {
case (x < 5):
alert("less than five");
break;
case (x < 9):
alert("between 5 and 8");
break;
case (x < 12):
alert("between 9 and 11");
break;
default:
alert("none");
break;
}
This should be faster than iterating and will work regardless of shape.
numpy.isnan(myarray).any()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s" % timeit.Timer(m, s).timeit(1000), m
Results:
0.11 s numpy.isnan(a).any()
3.75 s any(numpy.isnan(x) for x in a.flatten())
Bonus: it works fine for non-array NumPy types:
>>> a = numpy.float64(42.)
>>> numpy.isnan(a).any()
False
>>> a = numpy.float64(numpy.nan)
>>> numpy.isnan(a).any()
True
See MSDN.
public static class Extensions
{
public static string SomeMethod(this Duration enumValue)
{
//Do something here
return enumValue.ToString("D");
}
}
The solution, if your list items can be display: inline
is quite easy:
#footer { text-align: center; }
#footer ul { list-style: none; }
#footer ul li { display: inline; }
However, many times you must use display:block
on your <li>
s. The following CSS will work, in this case:
#footer { width: 100%; overflow: hidden; }
#footer ul { list-style: none; position: relative; float: left; display: block; left: 50%; }
#footer ul li { position: relative; float: left; display: block; right: 50%; }
Copy code using clone and appendTo function :
Here is also working example jsfiddle
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>
<body>
<div id="copy"><a href="http://brightwaay.com">Here</a> </div>
<br/>
<div id="copied"></div>
<script type="text/javascript">
$(function(){
$('#copy').clone().appendTo('#copied');
});
</script>
</body>
</html>
I use MVVM, so I created some attached properties of my own, using Thomas's as a reference. It does sorting on one column at a time when you click on the header, toggling between Ascending and Descending. It sorts from the very beginning using the first column. And it shows Win7/8 style glyphs.
Normally, all you have to do is set the main property to true (but you have to explicitly declare the GridViewColumnHeaders):
<Window xmlns:local="clr-namespace:MyProjectNamespace">
<Grid>
<ListView local:App.EnableGridViewSort="True" ItemsSource="{Binding LVItems}">
<ListView.View>
<GridView>
<GridViewColumn DisplayMemberBinding="{Binding Property1}">
<GridViewColumnHeader Content="Prop 1" />
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding Property2}">
<GridViewColumnHeader Content="Prop 2" />
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</Grid>
<Window>
If you want to sort on a different property than the display, than you have to declare that:
<GridViewColumn DisplayMemberBinding="{Binding Property3}"
local:App.GridViewSortPropertyName="Property4">
<GridViewColumnHeader Content="Prop 3" />
</GridViewColumn>
Here's the code for the attached properties, I like to be lazy and put them in the provided App.xaml.cs:
using System;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data.
using System.Windows.Media;
using System.Windows.Media.Media3D;
namespace MyProjectNamespace
{
public partial class App : Application
{
#region GridViewSort
public static DependencyProperty GridViewSortPropertyNameProperty =
DependencyProperty.RegisterAttached(
"GridViewSortPropertyName",
typeof(string),
typeof(App),
new UIPropertyMetadata(null)
);
public static string GetGridViewSortPropertyName(GridViewColumn gvc)
{
return (string)gvc.GetValue(GridViewSortPropertyNameProperty);
}
public static void SetGridViewSortPropertyName(GridViewColumn gvc, string n)
{
gvc.SetValue(GridViewSortPropertyNameProperty, n);
}
public static DependencyProperty CurrentSortColumnProperty =
DependencyProperty.RegisterAttached(
"CurrentSortColumn",
typeof(GridViewColumn),
typeof(App),
new UIPropertyMetadata(
null,
new PropertyChangedCallback(CurrentSortColumnChanged)
)
);
public static GridViewColumn GetCurrentSortColumn(GridView gv)
{
return (GridViewColumn)gv.GetValue(CurrentSortColumnProperty);
}
public static void SetCurrentSortColumn(GridView gv, GridViewColumn value)
{
gv.SetValue(CurrentSortColumnProperty, value);
}
public static void CurrentSortColumnChanged(
object sender, DependencyPropertyChangedEventArgs e)
{
GridViewColumn gvcOld = e.OldValue as GridViewColumn;
if (gvcOld != null)
{
CurrentSortColumnSetGlyph(gvcOld, null);
}
}
public static void CurrentSortColumnSetGlyph(GridViewColumn gvc, ListView lv)
{
ListSortDirection lsd;
Brush brush;
if (lv == null)
{
lsd = ListSortDirection.Ascending;
brush = Brushes.Transparent;
}
else
{
SortDescriptionCollection sdc = lv.Items.SortDescriptions;
if (sdc == null || sdc.Count < 1) return;
lsd = sdc[0].Direction;
brush = Brushes.Gray;
}
FrameworkElementFactory fefGlyph =
new FrameworkElementFactory(typeof(Path));
fefGlyph.Name = "arrow";
fefGlyph.SetValue(Path.StrokeThicknessProperty, 1.0);
fefGlyph.SetValue(Path.FillProperty, brush);
fefGlyph.SetValue(StackPanel.HorizontalAlignmentProperty,
HorizontalAlignment.Center);
int s = 4;
if (lsd == ListSortDirection.Ascending)
{
PathFigure pf = new PathFigure();
pf.IsClosed = true;
pf.StartPoint = new Point(0, s);
pf.Segments.Add(new LineSegment(new Point(s * 2, s), false));
pf.Segments.Add(new LineSegment(new Point(s, 0), false));
PathGeometry pg = new PathGeometry();
pg.Figures.Add(pf);
fefGlyph.SetValue(Path.DataProperty, pg);
}
else
{
PathFigure pf = new PathFigure();
pf.IsClosed = true;
pf.StartPoint = new Point(0, 0);
pf.Segments.Add(new LineSegment(new Point(s, s), false));
pf.Segments.Add(new LineSegment(new Point(s * 2, 0), false));
PathGeometry pg = new PathGeometry();
pg.Figures.Add(pf);
fefGlyph.SetValue(Path.DataProperty, pg);
}
FrameworkElementFactory fefTextBlock =
new FrameworkElementFactory(typeof(TextBlock));
fefTextBlock.SetValue(TextBlock.HorizontalAlignmentProperty,
HorizontalAlignment.Center);
fefTextBlock.SetValue(TextBlock.TextProperty, new Binding());
FrameworkElementFactory fefDockPanel =
new FrameworkElementFactory(typeof(StackPanel));
fefDockPanel.SetValue(StackPanel.OrientationProperty,
Orientation.Vertical);
fefDockPanel.AppendChild(fefGlyph);
fefDockPanel.AppendChild(fefTextBlock);
DataTemplate dt = new DataTemplate(typeof(GridViewColumn));
dt.VisualTree = fefDockPanel;
gvc.HeaderTemplate = dt;
}
public static DependencyProperty EnableGridViewSortProperty =
DependencyProperty.RegisterAttached(
"EnableGridViewSort",
typeof(bool),
typeof(App),
new UIPropertyMetadata(
false,
new PropertyChangedCallback(EnableGridViewSortChanged)
)
);
public static bool GetEnableGridViewSort(ListView lv)
{
return (bool)lv.GetValue(EnableGridViewSortProperty);
}
public static void SetEnableGridViewSort(ListView lv, bool value)
{
lv.SetValue(EnableGridViewSortProperty, value);
}
public static void EnableGridViewSortChanged(
object sender, DependencyPropertyChangedEventArgs e)
{
ListView lv = sender as ListView;
if (lv == null) return;
if (!(e.NewValue is bool)) return;
bool enableGridViewSort = (bool)e.NewValue;
if (enableGridViewSort)
{
lv.AddHandler(
GridViewColumnHeader.ClickEvent,
new RoutedEventHandler(EnableGridViewSortGVHClicked)
);
if (lv.View == null)
{
lv.Loaded += new RoutedEventHandler(EnableGridViewSortLVLoaded);
}
else
{
EnableGridViewSortLVInitialize(lv);
}
}
else
{
lv.RemoveHandler(
GridViewColumnHeader.ClickEvent,
new RoutedEventHandler(EnableGridViewSortGVHClicked)
);
}
}
public static void EnableGridViewSortLVLoaded(object sender, RoutedEventArgs e)
{
ListView lv = e.Source as ListView;
EnableGridViewSortLVInitialize(lv);
lv.Loaded -= new RoutedEventHandler(EnableGridViewSortLVLoaded);
}
public static void EnableGridViewSortLVInitialize(ListView lv)
{
GridView gv = lv.View as GridView;
if (gv == null) return;
bool first = true;
foreach (GridViewColumn gvc in gv.Columns)
{
if (first)
{
EnableGridViewSortApplySort(lv, gv, gvc);
first = false;
}
else
{
CurrentSortColumnSetGlyph(gvc, null);
}
}
}
public static void EnableGridViewSortGVHClicked(
object sender, RoutedEventArgs e)
{
GridViewColumnHeader gvch = e.OriginalSource as GridViewColumnHeader;
if (gvch == null) return;
GridViewColumn gvc = gvch.Column;
if(gvc == null) return;
ListView lv = VisualUpwardSearch<ListView>(gvch);
if (lv == null) return;
GridView gv = lv.View as GridView;
if (gv == null) return;
EnableGridViewSortApplySort(lv, gv, gvc);
}
public static void EnableGridViewSortApplySort(
ListView lv, GridView gv, GridViewColumn gvc)
{
bool isEnabled = GetEnableGridViewSort(lv);
if (!isEnabled) return;
string propertyName = GetGridViewSortPropertyName(gvc);
if (string.IsNullOrEmpty(propertyName))
{
Binding b = gvc.DisplayMemberBinding as Binding;
if (b != null && b.Path != null)
{
propertyName = b.Path.Path;
}
if (string.IsNullOrEmpty(propertyName)) return;
}
ApplySort(lv.Items, propertyName);
SetCurrentSortColumn(gv, gvc);
CurrentSortColumnSetGlyph(gvc, lv);
}
public static void ApplySort(ICollectionView view, string propertyName)
{
if (string.IsNullOrEmpty(propertyName)) return;
ListSortDirection lsd = ListSortDirection.Ascending;
if (view.SortDescriptions.Count > 0)
{
SortDescription sd = view.SortDescriptions[0];
if (sd.PropertyName.Equals(propertyName))
{
if (sd.Direction == ListSortDirection.Ascending)
{
lsd = ListSortDirection.Descending;
}
else
{
lsd = ListSortDirection.Ascending;
}
}
view.SortDescriptions.Clear();
}
view.SortDescriptions.Add(new SortDescription(propertyName, lsd));
}
#endregion
public static T VisualUpwardSearch<T>(DependencyObject source)
where T : DependencyObject
{
return VisualUpwardSearch(source, x => x is T) as T;
}
public static DependencyObject VisualUpwardSearch(
DependencyObject source, Predicate<DependencyObject> match)
{
DependencyObject returnVal = source;
while (returnVal != null && !match(returnVal))
{
DependencyObject tempReturnVal = null;
if (returnVal is Visual || returnVal is Visual3D)
{
tempReturnVal = VisualTreeHelper.GetParent(returnVal);
}
if (tempReturnVal == null)
{
returnVal = LogicalTreeHelper.GetParent(returnVal);
}
else
{
returnVal = tempReturnVal;
}
}
return returnVal;
}
}
}
Try MySQL Workbench, formerly DBDesigner 4:
http://dev.mysql.com/workbench/
This has a "Reverse Engineer Database" mode:
Database -> Reverse Engineer
to be secured, you should execute 3 commands :
cmdkey /generic:"server-address" /user:"username" /pass:"password"
mstsc /v:server-address
cmdkey /delete:server-address
first command to save the credential
second command to open remote desktop
and the third command to delete the credential
all of these commands can be saved in a batch file(bat).
This will work too:
DateTime today = new DateTime.now();
String dateSlug ="${today.year.toString()}-${today.month.toString().padLeft(2,'0')}-${today.day.toString().padLeft(2,'0')}";
print(dateSlug);
Do it the other way around subtracting the secs as needed, and don't call it time; there's a package with that name:
def sec_to_time():
sec = int( input ('Enter the number of seconds:'.strip()) )
days = sec / 86400
sec -= 86400*days
hrs = sec / 3600
sec -= 3600*hrs
mins = sec / 60
sec -= 60*mins
print days, ':', hrs, ':', mins, ':', sec
This is a solution I've used before to accomplish vertical centering in CSS. This works in all the modern browsers.
http://www.jakpsatweb.cz/css/css-vertical-center-solution.html
Excerpt:
<div style="display: table; height: 400px; position: relative; overflow: hidden;">
<div style="position: absolute; top: 50%;display: table-cell; vertical-align: middle;">
<div style="position: relative; top: -50%">
any text<br>
any height<br>
any content, for example generated from DB<br>
everything is vertically centered
</div>
</div>
</div>
(Inline styles for demonstration purposes)
The java.util.Date class in Java represents a particular moment in time (e,.g., 2013 Nov 25 16:30:45 down to milliseconds), but the DATE data type in the DB represents a date only (e.g., 2013 Nov 25). To prevent you from providing a java.util.Date object to the DB by mistake, Java doesn’t allow you to set a SQL parameter to java.util.Date directly:
PreparedStatement st = ...
java.util.Date d = ...
st.setDate(1, d); //will not work
But it still allows you to do that by force/intention (then hours and minutes will be ignored by the DB driver). This is done with the java.sql.Date class:
PreparedStatement st = ...
java.util.Date d = ...
st.setDate(1, new java.sql.Date(d.getTime())); //will work
A java.sql.Date object can store a moment in time (so that it’s easy to construct from a java.util.Date) but will throw an exception if you try to ask it for the hours (to enforce its concept of being a date only). The DB driver is expected to recognize this class and just use 0 for the hours. Try this:
public static void main(String[] args) {
java.util.Date d1 = new java.util.Date(12345);//ms since 1970 Jan 1 midnight
java.sql.Date d2 = new java.sql.Date(12345);
System.out.println(d1.getHours());
System.out.println(d2.getHours());
}
I had some ajax commands I wanted to run with a delay in between. Here is a simple example of one way to do that. I am prepared to be ripped to shreds though for my unconventional approach. :)
// Show current seconds and milliseconds
// (I know there are other ways, I was aiming for minimal code
// and fixed width.)
function secs()
{
var s = Date.now() + ""; s = s.substr(s.length - 5);
return s.substr(0, 2) + "." + s.substr(2);
}
// Log we're loading
console.log("Loading: " + secs());
// Create a list of commands to execute
var cmds =
[
function() { console.log("A: " + secs()); },
function() { console.log("B: " + secs()); },
function() { console.log("C: " + secs()); },
function() { console.log("D: " + secs()); },
function() { console.log("E: " + secs()); },
function() { console.log("done: " + secs()); }
];
// Run each command with a second delay in between
var ms = 1000;
cmds.forEach(function(cmd, i)
{
setTimeout(cmd, ms * i);
});
// Log we've loaded (probably logged before first command)
console.log("Loaded: " + secs());
You can copy the code block and paste it into a console window and see something like:
Loading: 03.077
Loaded: 03.078
A: 03.079
B: 04.075
C: 05.075
D: 06.075
E: 07.076
done: 08.076
To add bold, italic and underline, just add the following to the font argument:
font=("Arial", 8, 'normal', 'bold', 'italic', 'underline')
__func__
is an implicitly declared identifier that expands to a character array variable containing the function name when it is used inside of a function. It was added to C in C99. From C99 §6.4.2.2/1:
The identifier
__func__
is implicitly declared by the translator as if, immediately following the opening brace of each function definition, the declarationstatic const char __func__[] = "function-name";
appeared, where function-name is the name of the lexically-enclosing function. This name is the unadorned name of the function.
Note that it is not a macro and it has no special meaning during preprocessing.
__func__
was added to C++ in C++11, where it is specified as containing "an implementation-de?ned string" (C++11 §8.4.1[dcl.fct.def.general]/8), which is not quite as useful as the specification in C. (The original proposal to add __func__
to C++ was N1642).
__FUNCTION__
is a pre-standard extension that some C compilers support (including gcc and Visual C++); in general, you should use __func__
where it is supported and only use __FUNCTION__
if you are using a compiler that does not support it (for example, Visual C++, which does not support C99 and does not yet support all of C++0x, does not provide __func__
).
__PRETTY_FUNCTION__
is a gcc extension that is mostly the same as __FUNCTION__
, except that for C++ functions it contains the "pretty" name of the function including the signature of the function. Visual C++ has a similar (but not quite identical) extension, __FUNCSIG__
.
For the nonstandard macros, you will want to consult your compiler's documentation. The Visual C++ extensions are included in the MSDN documentation of the C++ compiler's "Predefined Macros". The gcc documentation extensions are described in the gcc documentation page "Function Names as Strings."
if you have textviews, buttons or stg clickable or selectable in your row view only
android:descendantFocusability="blocksDescendants"
is not enough. You have to set
android:textIsSelectable="false"
to your textviews and
android:focusable="false"
to your buttons and other focusable items.
You can do so. However, you can't assign to this. Thus the reason you state for doing this, "I want to change the view," seems very questionable. The better method, in my opinion, would be for the object that holds the view to replace that view.
Of course, you're using RAII objects and so you don't actually need to call delete at all...right?
Create custom DatePickerDialog
style:
<style name="AppTheme.DatePickerDialog" parent="Theme.MaterialComponents.Light.Dialog">
<item name="android:colorAccent">@color/colorPrimary</item>
<item name="android:colorControlActivated">@color/colorPrimaryDark</item>
<item name="android:buttonBarPositiveButtonStyle">@style/AppTheme.Alert.Button.Positive</item>
<item name="android:buttonBarNegativeButtonStyle">@style/AppTheme.Alert.Button.Negative</item>
<item name="android:buttonBarNeutralButtonStyle">@style/AppTheme.Alert.Button.Neutral</item>
</style>
<style name="AppTheme.Alert.Button.Positive" parent="Widget.MaterialComponents.Button.TextButton">
<item name="android:textColor">@color/buttonPositive</item>
</style>
<style name="AppTheme.Alert.Button.Negative" parent="Widget.MaterialComponents.Button.TextButton">
<item name="android:textColor">@color/buttonNegative</item>
</style>
<style name="AppTheme.Alert.Button.Neutral" parent="Widget.MaterialComponents.Button.TextButton">
<item name="android:textColor">@color/buttonNeutral</item>
</style>
Set custom datePickerDialogTheme
style in app theme:
<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<item name="android:datePickerDialogTheme">@style/AppTheme.DatePickerDialog</item>
</style>
Set theme programmatically on initialization like this:
val datetime = DatePickerDialog(this, R.style.AppTheme_DatePickerDialog)
After I performed the following instructions in SSMS, everything works fine:
create login [IIS APPPOOL\MyWebAPP] from windows;
exec sp_addsrvrolemember N'IIS APPPOOL\MyWebAPP', sysadmin
Here is a solution with shell parameter expansion that replaces multiple contiguous occurrences with a single _
:
$ var=AxxBCyyyDEFzzLMN
$ echo "${var//+([xyz])/_}"
A_BC_DEF_LMN
Notice that the +(pattern)
pattern requires extended pattern matching, turned on with
shopt -s extglob
Alternatively, with the -s
("squeeze") option of tr
:
$ tr -s xyz _ <<< "$var"
A_BC_DEF_LMN
The data parameter of ajax method allows you send data to server side.On server side you can request the data.See the code
var id=5;
$.ajax({
type: "get",
url: "url of server side script",
data:{id:id},
success: function(res){
console.log(res);
},
error:function(error)
{
console.log(error);
}
});
At server side receive it using $_GET variable.
$_GET['id'];
In Swift 2.0 you can use this method:
let registrationView = LMRegistration()
self.presentViewController(registrationView, animated: true, completion: nil)
You do not specify your environment and version of Javascript (ECMAscript), and I realise this post was from 2009, but just for completeness, with the release of ECMA2018 we can now use the s
flag to cause .
to match '\n', see https://stackoverflow.com/a/36006948/141801
Thus:
let s = 'I am a string\nover several\nlines.';
console.log('String: "' + s + '".');
let r = /string.*several.*lines/s; // Note 's' modifier
console.log('Match? ' + r.test(s); // 'test' returns true
This is a recent addition and will not work in many current environments, for example Node v8.7.0 does not seem to recognise it, but it works in Chromium, and I'm using it in a Typescript test I'm writing and presumably it will become more mainstream as time goes by.
Its boils down to this: math.h
is from C
and was created over 10 years ago. In math.h, due to its primitive nature, the abs()
function is "essentially" just for integer types and if you wanted to get the absolute value of a double, you had to use fabs()
.
When C++ was created it took math.h
and made it cmath
. cmath
is essentially math.h but improved for C++. It improved things like having to distinguish between fabs()
and abs, and just made abs()
for both doubles and integer types.
In summary either:
Use math.h and use abs()
for integers, fabs()
for doubles
or
use cmath and just have abs for everything (easier and recommended)
Hope this helps anyone who is having the same problem!
Static inner class cannot access non-static members of enclosing class. It can directly access static members (instance field and methods) of enclosing class same like the procedural style of getting value without creating object.
Static inner class can declare both static and non-static members. The static methods have access to static members of main class. However, it cannot access non-static inner class members. To access members of non-static inner class, it has to create object of non-static inner class.
Non-static inner class cannot declare static field and static methods. It has to be declared in either static or top level types. You will get this error on doing so saying "static fields only be declared in static or top level types".
Non-static inner class can access both static and non-static members of enclosing class in procedural style of getting value, but it cannot access members of static inner class.
The enclosing class cannot access members of inner classes until it creates an object of inner classes. IF main class in accessing members of non-static class it can create object of non-static inner class.
If main class in accessing members of static inner class it has two cases:
I tried to send/add input tag's values into JavaScript variable which worked well for me, here is the code:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function changef()
{
var ctext=document.getElementById("c").value;
document.writeln(ctext);
}
</script>
</head>
<body>
<input type="text" id="c" onchange="changef"();>
<button type="button" onclick="changef()">click</button>
</body>
</html>
I use this to avoid negative interval.
var seconds = (date1< date2)? (date2- date1).TotalSeconds: (date1 - date2).TotalSeconds;
On groupby
object, the agg
function can take a list to apply several aggregation methods at once. This should give you the result you need:
df[['col1', 'col2', 'col3', 'col4']].groupby(['col1', 'col2']).agg(['mean', 'count'])
The ASCII table contains 128 codes, with a total of 95 printable characters, of which only 52 characters are letters:
[0-127]
ASCII codes
[32-126]
printable characters
[48-57]
digits [0-9]
[65-90]
uppercase letters [A-Z]
[97-122]
lowercase letters [a-z]
You can use String.codePoints
method to get a stream over int
values of characters of this string and filter
out non-ASCII characters:
String str1 = "A função, Ãugent";
String str2 = str1.codePoints()
.filter(ch -> ch < 128)
.mapToObj(Character::toString)
.collect(Collectors.joining());
System.out.println(str2); // A funo, ugent
Or you can explicitly specify character ranges. For example filter out everything except letters:
String str3 = str1.codePoints()
.filter(ch -> ch >= 'A' && ch <= 'Z'
|| ch >= 'a' && ch <= 'z')
.mapToObj(Character::toString)
.collect(Collectors.joining());
System.out.println(str3); // Afunougent
See also: How do I not take Special Characters in my Password Validation (without Regex)?
If you want to avoid including the full path to awk, you need to update your PATH variable to include the path to the directory where awk is located, then you can just type
awk
to run your programs.
Go to Control Panel->System->Advanced and set your PATH environment variable to include "C:\Program Files (x86)\GnuWin32\bin" at the end (separated by a semi-colon) from previous entry.
I tried all suggestions above, and it did not work for my case. It turns out that my project build path has an error (one of the dependent jar cannot be found). After fixing that error, testng works again in my Eclipse.
The way is correct, but can be improved a bit with the extended set-syntax.
set "var=xyz"
Sets the var to the content until the last quotation mark, this ensures that no "hidden" spaces are appended.
Your code would look like
set "var1=A"
set "var2=B"
set "AB=hi"
set "newvar=%var1%%var2%"
echo %newvar% is the concat of var1 and var2
echo !%newvar%! is the indirect content of newvar
You can try the following in PostgreSQL 9
DO $$DECLARE r record;
BEGIN
FOR r IN SELECT tablename FROM pg_tables WHERE schemaname = 'public'
LOOP
EXECUTE 'alter table '|| r.tablename ||' owner to newowner;';
END LOOP;
END$$;
We just started using this slick tool: https://plugins.jquery.com/tablesorter/
There is a video on its use at: http://www.highoncoding.com/Articles/695_Sorting_GridView_Using_JQuery_TableSorter_Plug_in.aspx
$('#tableRoster').tablesorter({
headers: {
0: { sorter: false },
4: { sorter: false }
}
});
With a simple table
<table id="tableRoster">
<thead>
<tr>
<th><input type="checkbox" class="rCheckBox" value="all" id="rAll" ></th>
<th>User</th>
<th>Verified</th>
<th>Recently Accessed</th>
<th> </th>
</tr>
</thead>
The stringi
package provides the functions stri_count
and stri_count_fixed
which are very fast.
stringi::stri_count(q.data$string, fixed = "a")
# [1] 2 1 0
benchmark
Compared to the fastest approach from @42-'s answer and to the equivalent function from the stringr
package for a vector with 30.000 elements.
library(microbenchmark)
benchmark <- microbenchmark(
stringi = stringi::stri_count(test.data$string, fixed = "a"),
baseR = nchar(test.data$string) - nchar(gsub("a", "", test.data$string, fixed = TRUE)),
stringr = str_count(test.data$string, "a")
)
autoplot(benchmark)
data
q.data <- data.frame(number=1:3, string=c("greatgreat", "magic", "not"), stringsAsFactors = FALSE)
test.data <- q.data[rep(1:NROW(q.data), 10000),]
The following list contains links to the the enhancements pages in the Java SE 7.
Swing
IO and New IO
Networking
Security
Concurrency Utilities
Rich Internet Applications (RIA)/Deployment
Requesting and Customizing Applet Decoration in Dragg able Applets
Embedding JNLP File in Applet Tag
Deploying without Codebase
Handling Applet Initialization Status with Event Handlers
Java 2D
Java XML – JAXP, JAXB, and JAX-WS
Internationalization
java.lang Package
Multithreaded Custom Class Loaders in Java SE 7
Java Programming Language
Binary Literals
Strings in switch Statements
The try-with-resources Statement
Catching Multiple Exception Types and Rethrowing Exceptions with Improved Type Checking
Underscores in Numeric Literals
Type Inference for Generic Instance Creation
Improved Compiler Warnings and Errors When Using Non-Reifiable Formal Parameters with Varargs Methods
Java Virtual Machine (JVM)
Java Virtual Machine Support for Non-Java Languages
Garbage-First Collector
Java HotSpot Virtual Machine Performance Enhancements
JDBC
An improved version for recursive approach suggested by @schirrmacher to print key[value] for the entire object:
var jDepthLvl = 0;
function visit(object, objectAccessor=null) {
jDepthLvl++;
if (isIterable(object)) {
if(objectAccessor === null) {
console.log("%c ? ? printing object $OBJECT_OR_ARRAY$ -- START ? ?", "background:yellow");
} else
console.log("%c"+spacesDepth(jDepthLvl)+objectAccessor+"%c:","color:purple;font-weight:bold", "color:black");
forEachIn(object, function (accessor, child) {
visit(child, accessor);
});
} else {
var value = object;
console.log("%c"
+ spacesDepth(jDepthLvl)
+ objectAccessor + "[%c" + value + "%c] "
,"color:blue","color:red","color:blue");
}
if(objectAccessor === null) {
console.log("%c ? ? printing object $OBJECT_OR_ARRAY$ -- END ? ?", "background:yellow");
}
jDepthLvl--;
}
function spacesDepth(jDepthLvl) {
let jSpc="";
for (let jIter=0; jIter<jDepthLvl-1; jIter++) {
jSpc+="\u0020\u0020"
}
return jSpc;
}
function forEachIn(iterable, functionRef) {
for (var accessor in iterable) {
functionRef(accessor, iterable[accessor]);
}
}
function isIterable(element) {
return isArray(element) || isObject(element);
}
function isArray(element) {
return element.constructor == Array;
}
function isObject(element) {
return element.constructor == Object;
}
visit($OBJECT_OR_ARRAY$);
{{#each array}}
{{@index}}
{{/each}}
If you are looking for a very extensible option or have a specific problem domain you could consider rolling your own using the Java Object Oriented Neural Engine. Another JOONE reference.
I used it successfully in a personal project to identify the letter from an image such as this, you can find all the source for the OCR component of my application on github, here.
I don't believe the expression is sensical as it is.
Elvis means "if truthy, use the value, else use this other thing."
Your "other thing" is a closure, and the value is status != null
, neither of which would seem to be what you want. If status
is null, Elvis says true
. If it's not, you get an extra layer of closure.
Why can't you just use:
(it.description == desc) && ((status == null) || (it.status == status))
Even if that didn't work, all you need is the closure to return the appropriate value, right? There's no need to create two separate find
calls, just use an intermediate variable.
OpenURI is the best; it's as simple as
require 'open-uri'
response = open('http://example.com').read
Found the chrome Options class in the Selenium source code.
Usage to create a Chrome driver instance:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument("--disable-extensions")
driver = webdriver.Chrome(chrome_options=chrome_options)
fcntl()
or ioctl()
are used to set the properties for file streams. When you use this function to make a socket non-blocking, function like accept()
, recv()
and etc, which are blocking in nature will return error and errno
would be set to EWOULDBLOCK
. You can poll file descriptor sets to poll on sockets.
See https://docs.djangoproject.com/en/stable/ref/templates/builtins/#if : just use, to reproduce their example:
{% if athlete_list %}
Number of athletes: {{ athlete_list|length }}
{% else %}
No athletes.
{% endif %}
Use get_browser()
function.
It can give you output like this:
Array
(
[browser_name_regex] => ^mozilla/5\.0 (windows; .; windows nt 5\.1; .*rv:.*) gecko/.* firefox/0\.9.*$
[browser_name_pattern] => Mozilla/5.0 (Windows; ?; Windows NT 5.1; *rv:*) Gecko/* Firefox/0.9*
[parent] => Firefox 0.9
[platform] => WinXP
[browser] => Firefox
[version] => 0.9
[majorver] => 0
[minorver] => 9
....
Please try with the code below
var windowWidth = $(window).width();
$(window).resize(function() {
if(windowWidth != $(window).width()){
location.reload();
return;
}
});
BABEL TEAM UPDATE:
We're super excited that you're trying to use ES2015 syntax, but instead of continuing yearly presets, the team recommends using babel-preset-env. By default, it has the same behavior as previous presets to compile ES2015+ to ES5
If you are using Babel version 7 you will need to run npm install @babel/preset-env and have "presets": ["@babel/preset-env"] in your .babelrc
configuration.
This will compile all latest features to es5 transpiled code:
Prerequisites:
Step-1:: npm install --save-dev @babel/preset-env
Step-2: In order to compile JSX
code to es5 babel provides @babel/preset-react
package to convert reactjsx
extension file to native browser understandable code.
Step-3: npm install --save-dev @babel/preset-react
Step-4: create .babelrc
file inside root path path of your project where webpack.config.js
exists.
{
"presets": ["@babel/preset-env", "@babel/preset-react"]
}
Step-5: webpack.config.js
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
mode: 'development',
entry: path.resolve(__dirname, 'src/index.js'),
output: {
path: path.resolve(__dirname, 'output'),
filename: 'bundle.js'
},
resolve: {
extensions: ['.js', '.jsx']
},
module: {
rules: [{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader'
}
},
{
test: /\.css$/i,
use: ['style-loader', 'css-loader'],
}
]
},
plugins: [
new HtmlWebpackPlugin({
template: "./public/index.html",
filename: "./index.html"
})
]
}
(please upvote that answer so it can be more visible).
The simplest solution would be:
echo parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
Parse_url is a built-in php function, who's sole purpose is to extract specific components from a url, including the PATH
(everything before the first ?
). As such, it is my new "best" solution to this problem.
Stackoverflow: How to remove the querystring and get only the url?
You can use strtok to get string before first occurence of ?
$url=strtok($_SERVER["REQUEST_URI"],'?');
Performance Note: This problem can also be solved using explode.
This application of strtok to return everything in a string before the first instance of a character will perform better than any other method in PHP, though WILL leave the querystring in memory.
$_SERVER
varsWhile OP did not ask about it, I suppose it is worth mentioning: parse_url should be used to extract any specific component from the url, please see the documentation for that function:
parse_url($actual_link, PHP_URL_SCHEME);
Of note here, is that getting the full URL from a request is not a trivial task, and has many security implications. $_SERVER
variables are your friend here, but they're a fickle friend, as apache/nginx configs, php environments, and even clients, can omit or alter these variables. All of this is well out of scope for this question, but it has been thoroughly discussed:
https://stackoverflow.com/a/6768831/1589379
It is important to note that these $_SERVER
variables are populated at runtime, by whichever engine is doing the execution (/var/run/php/
or /etc/php/[version]/fpm/
). These variables are passed from the OS, to the webserver (apache/nginx) to the php engine, and are modified and amended at each step. The only such variables that can be relied on are REQUEST_URI
(because it's required by php), and those listed in RFC 3875 (see: PHP: $_SERVER ) because they are required of webservers.
please note: spaming links to your answers across other questions is not in good taste.
My understanding is you don't need to install Anaconda again to start using a different version of python. Instead, conda has the ability to separately manage python 2 and 3 environments.
Yes:
df -k .
for the current directory.
df -k /some/dir
if you want to check a specific directory.
You might also want to check out the stat(1)
command if your system has it. You can specify output formats to make it easier for your script to parse. Here's a little example:
$ echo $(($(stat -f --format="%a*%S" .)))
you can't do multiple inheritance in java. consider using interfaces:
interface I1 {}
interface I2 {}
class C implements I1, I2 {}
or inner classes:
class Outer {
class Inner1 extends Class1 {}
class Inner2 extends Class2 {}
}
select
datediff(millisecond,'2010-01-22 15:29:55.090','2010-01-22 15:30:09.153') / 1000.0 as Secs
result:
Secs
14.063
Just thought I'd mention it.
Building on Amine's answer, create a helper like:
public static class HtmlHelperExtensions
{
public static MvcHtmlString CurrencyFormat(this HtmlHelper helper, string value)
{
var result = string.Format("{0:C2}", value);
return new MvcHtmlString(result);
}
}
in your view: use @Html.CurrencyFormat(model.value)
If you are doing simple formating like Standard Numeric Formats, then simple use string.Format() in your view like in the helper example above:
@string.Format("{0:C2}", model.value)
From here
<nul set /p =Testing testing
and also to echo beginning with spaces use
echo.Message goes here
Yes You can compile and execute without main method By using static block. But after static block executed (printed) you will get an error saying no main method found.
And Latest INFO --> YOU cant Do this with JAVA 7 version. IT will not execute.
{
static
{
System.out.println("Hello World!");
System.exit(0); // prevents “main method not found” error
}
}
But this will not execute with JAVA 7 version.
Following on from LES2's answer, you can eliminate some repetition in the efficient version, by calling the overloaded function:
public static <T> T coalesce(T a, T b) {
return a != null ? a : b;
}
public static <T> T coalesce(T a, T b, T c) {
return a != null ? a : coalesce(b,c);
}
public static <T> T coalesce(T a, T b, T c, T d) {
return a != null ? a : coalesce(b,c,d);
}
public static <T> T coalesce(T a, T b, T c, T d, T e) {
return a != null ? a : coalesce(b,c,d,e);
}
Also you can just login with windows authentication and run the following query to enable it:
ALTER LOGIN sa ENABLE ;
GO
ALTER LOGIN sa WITH PASSWORD = '<enterStrongPasswordHere>' ;
GO
If you have the element in scroll view then you can also solve this issue as :
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/ed_password"
android:inputType="textPassword"
android:focusable="true"
android:imeOptions="actionNext"
android:nextFocusDown="@id/ed_confirmPassword" />
and in your activity:
edPassword.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_NEXT) {
focusOnView(scroll,edConfirmPassword);
return true;
}
return false;
}
});
public void focusOnView(ScrollView scrollView, EditText viewToScrollTo){
scrollView.post(new Runnable() {
@Override
public void run() {
scrollView.smoothScrollTo(0, viewToScrollTo.getBottom());
viewToScrollTo.requestFocus();
}
});
}
I'm not sure if our problem was directly related with installing gulp only locally. But we had to install a bunch of dependencies ourself. This lead to a "huge" package.json and we are not sure if it is really a great idea to install gulp only locally. We had to do so because of our build environment. But I wouldn't recommend installing gulp not globally if it isn't absolutely necessary. We faced similar problems as described in the following blog-post
None of these problems arise for any of our developers on their local machines because they all installed gulp globally. On the build system we had the described problems. If someone is interested I could dive deeper into this issue. But right now I just wanted to mention that it isn't an easy path to install gulp only locally.
Try two things:
java/jdk1.6.0_31/jre/lib/security/Java.security
change securerandom.source=file:/dev/urandom
to securerandom.source=file:///dev/urandom
UPDATED:
Correctly calculate a timespan in SQL Server, even if more than 24 hours:
-- Setup test data
declare @minDate datetime = '2012-12-12 20:16:47.160'
declare @maxDate datetime = '2012-12-13 15:10:12.050'
-- Get timespan in hh:mi:ss
select cast(
(cast(cast(@maxDate as float) - cast(@minDate as float) as int) * 24) /* hours over 24 */
+ datepart(hh, @maxDate - @minDate) /* hours */
as varchar(10))
+ ':' + right('0' + cast(datepart(mi, @maxDate - @minDate) as varchar(2)), 2) /* minutes */
+ ':' + right('0' + cast(datepart(ss, @maxDate - @minDate) as varchar(2)), 2) /* seconds */
-- Returns 18:53:24
Edge cases that show inaccuracy are especially welcome!
I'd iterate through the options, comparing the text to what I want to be selected, then set the selected attribute on that option. Once you find the correct one, terminate the iteration (unless you have a multiselect).
$('#dropdown').find('option').each( function() {
var $this = $(this);
if ($this.text() == 'B') {
$this.attr('selected','selected');
return false;
}
});
You can programmatically get the image and check the dimensions using Javascript...
const img = new Image();
img.onload = function() {
alert(this.width + 'x' + this.height);
}
img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif';
_x000D_
This can be useful if the image is not a part of the markup.
There is no difference in C++, but I believe in C it would allow you to declare instances of the struct Foo without explicitly doing:
struct Foo bar;
These are Microsoft defined typedefs which correspond to:
LPCSTR: pointer to null terminated const string of char
LPSTR: pointer to null terminated char string of char
(often a buffer is passed and used as an 'output' param)
LPCWSTR: pointer to null terminated string of const wchar_t
LPWSTR: pointer to null terminated string of wchar_t
(often a buffer is passed and used as an 'output' param)
To "convert" a std::string
to a LPCSTR depends on the exact context but usually calling .c_str()
is sufficient.
This works.
void TakesString(LPCSTR param);
void f(const std::string& param)
{
TakesString(param.c_str());
}
Note that you shouldn't attempt to do something like this.
LPCSTR GetString()
{
std::string tmp("temporary");
return tmp.c_str();
}
The buffer returned by .c_str()
is owned by the std::string
instance and will only be valid until the string is next modified or destroyed.
To convert a std::string
to a LPWSTR
is more complicated. Wanting an LPWSTR
implies that you need a modifiable buffer and you also need to be sure that you understand what character encoding the std::string
is using. If the std::string
contains a string using the system default encoding (assuming windows, here), then you can find the length of the required wide character buffer and perform the transcoding using MultiByteToWideChar
(a Win32 API function).
e.g.
void f(const std:string& instr)
{
// Assumes std::string is encoded in the current Windows ANSI codepage
int bufferlen = ::MultiByteToWideChar(CP_ACP, 0, instr.c_str(), instr.size(), NULL, 0);
if (bufferlen == 0)
{
// Something went wrong. Perhaps, check GetLastError() and log.
return;
}
// Allocate new LPWSTR - must deallocate it later
LPWSTR widestr = new WCHAR[bufferlen + 1];
::MultiByteToWideChar(CP_ACP, 0, instr.c_str(), instr.size(), widestr, bufferlen);
// Ensure wide string is null terminated
widestr[bufferlen] = 0;
// Do something with widestr
delete[] widestr;
}
The fact that mongoDB is not relational have led some people to consider it useless. I think that you should know what you are doing before designing a DB. If you choose to use noSQL DB such as MongoDB, you better implement a schema. This will make your collections - more or less - resemble tables in SQL databases. Also, avoid denormalization (embedding), unless necessary for efficiency reasons.
If you want to design your own noSQL database, I suggest to have a look on Firebase documentation. If you understand how they organize the data for their service, you can easily design a similar pattern for yours.
As others pointed out, you will have to do the joins client-side, except with Meteor (a Javascript framework), you can do your joins server-side with this package (I don't know of other framework which enables you to do so). However, I suggest you read this article before deciding to go with this choice.
Edit 28.04.17: Recently Firebase published this excellent series on designing noSql Databases. They also highlighted in one of the episodes the reasons to avoid joins and how to get around such scenarios by denormalizing your database.
I have myself been looking into this problem. I have seen quite a few solutions and each of them had issues, often involving some magic numbers.
So using best practices from various sources I came up with this solution:
http://jsfiddle.net/vfSM3/248/
The thing I wanted to achieve specifically here was to get the main content to scroll between footer and header inside green area.
here is a simple css:
html, body {
height: 100%;
margin: 0;
padding: 0;
}
header {
height: 4em;
background-color: red;
position: relative;
z-index: 1;
}
.content {
background: white;
position: absolute;
top: 5em;
bottom: 5em;
overflow: auto;
}
.contentinner {
}
.container {
height: 100%;
margin: -4em 0 -2em 0;
background: green;
position: relative;
overflow: auto;
}
footer {
height: 2em;
position: relative;
z-index: 1;
background-color: yellow;
}
The sum
function will add all numbers together to produce a single number, not a vector (well, at least not a vector of length greater than 1).
It looks as though at least one of your columns is a factor. You could convert them into numeric vectors by checking this
head(as.numeric(data$col1)) # make sure this gives you the right output
And if that looks right, do
data$col1 <- as.numeric(data$col1)
data$col2 <- as.numeric(data$col2)
You might have to convert them into characters first. In which case do
data$col1 <- as.numeric(as.character(data$col1))
data$col2 <- as.numeric(as.character(data$col2))
It's hard to tell which you should do without being able to see your data.
Once the columns are numeric, you just have to do
data$col3 <- data$col1 + data$col2
For anyone checking this using python 3:
If you want to print the following output "100% correct"
:
python 3.8: print("100% correct")
python 3.7 and less: print("100%% correct")
A neat programming workaround for compatibility across diff versions of python is shown below:
Note: If you have to use this, you're probably experiencing many other errors... I'd encourage you to upgrade / downgrade python in relevant machines so that they are all compatible.
DevOps is a notable exception to the above -- implementing the following code would indeed be appropriate for specific DevOps / Debugging scenarios.
import sys
if version_info.major==3:
if version_info.minor>=8:
my_string = "100% correct"
else:
my_string = "100%% correct"
# Finally
print(my_string)
@Nickparsa … you have 2 issues:
1). mysql -uroot -p
should be typed in bash (also known as your terminal) not in MySQL command-line. You fix this error by typing
exit
in your MySQL command-line. Now you are back in your bash/terminal command-line.
2). You have a syntax error:
mysql -uroot -p;
the semicolon in front of -p needs to go. The correct syntax is:
mysql -uroot -p
type the correct syntax in your bash commandline. Enter a password if you have one set up; else just hit the enter button. You should get a response that is similar to this:
Hope this helps!
You can do something like
SELECT news.id as news_id, user.id as user_id ....
And then $row['news_id']
will be the news id and $row['user_id']
will be the user id
In package.json you will find an eslintConfig
line. Your 'rules' line can go in there like this:
"eslintConfig": {
...
"extends": [
"eslint:recommended"
],
"rules": {
"no-console": "off"
},
...
},
At a minimum, change this:
function BlockID() {
var IDs = new Array();
images['s'] = "Images/Block_01.png";
images['g'] = "Images/Block_02.png";
images['C'] = "Images/Block_03.png";
images['d'] = "Images/Block_04.png";
return IDs;
}
To this:
function BlockID() {
var IDs = new Object();
IDs['s'] = "Images/Block_01.png";
IDs['g'] = "Images/Block_02.png";
IDs['C'] = "Images/Block_03.png";
IDs['d'] = "Images/Block_04.png";
return IDs;
}
There are a couple fixes to point out. First, images
is not defined in your original function, so assigning property values to it will throw an error. We correct that by changing images
to IDs
. Second, you want to return an Object
, not an Array
. An object can be assigned property values akin to an associative array or hash -- an array cannot. So we change the declaration of var IDs = new Array();
to var IDs = new Object();
.
After those changes your code will run fine, but it can be simplified further. You can use shorthand notation (i.e., object literal property value shorthand) to create the object and return it immediately:
function BlockID() {
return {
"s":"Images/Block_01.png"
,"g":"Images/Block_02.png"
,"C":"Images/Block_03.png"
,"d":"Images/Block_04.png"
};
}
from datetime import datetime
from dateutil.relativedelta import relativedelta
d = datetime.now()
date = datetime.isoformat(d).split('.')[0]
d_month = datetime.today() + relativedelta(months=1)
next_month = datetime.isoformat(d_month).split('.')[0]
This is a bit confusing, but follow these steps to save the session.
To open the session, double click on particular saved session.
The actual behavior across different devices is inconsistent. The resize and orientationChange events can fire in a different sequence with varying frequency. Also, some values (e.g. screen.width and window.orientation) don't always change when you expect. Avoid screen.width -- it doesn't change when rotating in iOS.
The reliable approach is to listen to both resize and orientationChange events (with some polling as a safety catch), and you'll eventually get a valid value for the orientation. In my testing, Android devices occasionally fail to fire events when rotating a full 180 degrees, so I've also included a setInterval to poll the orientation.
var previousOrientation = window.orientation;
var checkOrientation = function(){
if(window.orientation !== previousOrientation){
previousOrientation = window.orientation;
// orientation changed, do your magic here
}
};
window.addEventListener("resize", checkOrientation, false);
window.addEventListener("orientationchange", checkOrientation, false);
// (optional) Android doesn't always fire orientationChange on 180 degree turns
setInterval(checkOrientation, 2000);
Here are the results from the four devices that I've tested (sorry for the ASCII table, but it seemed like the easiest way to present the results). Aside from the consistency between the iOS devices, there is a lot of variety across devices. NOTE: The events are listed in the order that they fired.
|==============================================================================| | Device | Events Fired | orientation | innerWidth | screen.width | |==============================================================================| | iPad 2 | resize | 0 | 1024 | 768 | | (to landscape) | orientationchange | 90 | 1024 | 768 | |----------------+-------------------+-------------+------------+--------------| | iPad 2 | resize | 90 | 768 | 768 | | (to portrait) | orientationchange | 0 | 768 | 768 | |----------------+-------------------+-------------+------------+--------------| | iPhone 4 | resize | 0 | 480 | 320 | | (to landscape) | orientationchange | 90 | 480 | 320 | |----------------+-------------------+-------------+------------+--------------| | iPhone 4 | resize | 90 | 320 | 320 | | (to portrait) | orientationchange | 0 | 320 | 320 | |----------------+-------------------+-------------+------------+--------------| | Droid phone | orientationchange | 90 | 320 | 320 | | (to landscape) | resize | 90 | 569 | 569 | |----------------+-------------------+-------------+------------+--------------| | Droid phone | orientationchange | 0 | 569 | 569 | | (to portrait) | resize | 0 | 320 | 320 | |----------------+-------------------+-------------+------------+--------------| | Samsung Galaxy | orientationchange | 0 | 400 | 400 | | Tablet | orientationchange | 90 | 400 | 400 | | (to landscape) | orientationchange | 90 | 400 | 400 | | | resize | 90 | 683 | 683 | | | orientationchange | 90 | 683 | 683 | |----------------+-------------------+-------------+------------+--------------| | Samsung Galaxy | orientationchange | 90 | 683 | 683 | | Tablet | orientationchange | 0 | 683 | 683 | | (to portrait) | orientationchange | 0 | 683 | 683 | | | resize | 0 | 400 | 400 | | | orientationchange | 0 | 400 | 400 | |----------------+-------------------+-------------+------------+--------------|
$(".testClick").click(function () {
var value = $(this).attr("href");
alert(value );
});
When you use $(".className") you are getting the set of all elements that have that class. Then when you call attr it simply returns the value of the first item in the collection.
Is that an actual compiler error or a Code Analysis error? Some times the code analysis can be a bit sketchy and report non-valid errors.
To turn off code analysis for the project, right click on your project in the Project Explorer, click on Properties, then go to the C/C++ General tab, then Code Analysis. Then click on "Use Project Settings" and disable the ones that you do not wish for.
Also, are you sure you are compiling with the C++11 compiler?
As per http://msdn.microsoft.com/en-us/library/ms188790.aspx
@@ERROR: Returns the error number for the last Transact-SQL statement executed.
You will have to check after each statement in order to perform the rollback and return.
Commit can be at the end.
HTH
You can avoid the BasicResponseHandler, but use the HttpResponse itself to get both status and response as a String.
HttpResponse response = httpClient.execute(get);
// Getting the status code.
int statusCode = response.getStatusLine().getStatusCode();
// Getting the response body.
String responseBody = EntityUtils.toString(response.getEntity());
A more optimized way in mysql for this purpose*:
SELECT columnName DIV 1 AS columnName, moreColumns, etc
FROM myTable
WHERE ...
Using DIV 1 is a huge speed improvement over FLOOR, not to mention string based functions like FORMAT
mysql> SELECT BENCHMARK(10000000,1234567 DIV 7) ;
+-----------------------------------+
| BENCHMARK(10000000,1234567 DIV 7) |
+-----------------------------------+
| 0 |
+-----------------------------------+
1 row in set (0.83 sec)
mysql> SELECT BENCHMARK(10000000,1234567 / 7) ;
+---------------------------------+
| BENCHMARK(10000000,1234567 / 7) |
+---------------------------------+
| 0 |
+---------------------------------+
1 row in set (7.26 sec)
mysql> SELECT BENCHMARK(10000000,FLOOR(1234567 / 7)) ;
+----------------------------------------+
| BENCHMARK(10000000,FLOOR(1234567 / 7)) |
+----------------------------------------+
| 0 |
+----------------------------------------+
1 row in set (8.80 sec)
(*) NOTE: As pointed by Grbts, be aware of the behaviour of DIV 1 when used with non unsigned/positive values.
Crash Null Point Exception Fix: I had a case where the keyboard might not open when the user clicks the button. You have to write an if statement to check that getCurrentFocus() isn't a null:
InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
if(getCurrentFocus() != null) {
inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
Even though it's stated in many of the other answers here, the component should either:
implement shouldComponentUpdate
to render only when state or properties change
switch to extending a PureComponent, which already implements a shouldComponentUpdate
method internally for shallow comparisons.
Here's an example that uses shouldComponentUpdate
, which works only for this simple use case and demonstration purposes. When this is used, the component no longer re-renders itself on each click, and is rendered when first displayed, and after it's been clicked once.
var TimeInChild = React.createClass({_x000D_
render: function() {_x000D_
var t = new Date().getTime();_x000D_
_x000D_
return (_x000D_
<p>Time in child:{t}</p>_x000D_
);_x000D_
}_x000D_
});_x000D_
_x000D_
var Main = React.createClass({_x000D_
onTest: function() {_x000D_
this.setState({'test':'me'});_x000D_
},_x000D_
_x000D_
shouldComponentUpdate: function(nextProps, nextState) {_x000D_
if (this.state == null)_x000D_
return true;_x000D_
_x000D_
if (this.state.test == nextState.test)_x000D_
return false;_x000D_
_x000D_
return true;_x000D_
},_x000D_
_x000D_
render: function() {_x000D_
var currentTime = new Date().getTime();_x000D_
_x000D_
return (_x000D_
<div onClick={this.onTest}>_x000D_
<p>Time in main:{currentTime}</p>_x000D_
<p>Click me to update time</p>_x000D_
<TimeInChild/>_x000D_
</div>_x000D_
);_x000D_
}_x000D_
});_x000D_
_x000D_
ReactDOM.render(<Main/>, document.body);
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.0/react.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.0/react-dom.min.js"></script>
_x000D_
You can print the PHP variable into your javascript while your page is created.
<script type="text/javascript">
var MyJSStringVar = "<?php Print($MyPHPStringVar); ?>";
var MyJSNumVar = <?php Print($MyPHPNumVar); ?>;
</script>
Of course this is for simple variables and not objects.
Symfony 2.1
$response = new Response(json_encode(array('name' => $name)));
$response->headers->set('Content-Type', 'application/json');
return $response;
Symfony 2.2 and higher
You have special JsonResponse class, which serialises array to JSON:
return new JsonResponse(array('name' => $name));
But if your problem is How to serialize entity then you should have a look at JMSSerializerBundle
Assuming that you have it installed, you'll have simply to do
$serializedEntity = $this->container->get('serializer')->serialize($entity, 'json');
return new Response($serializedEntity);
You should also check for similar problems on StackOverflow:
I know this is a pretty old question, but I dealt with this recently. Let me know what you think of this solution.
I created a utility that lets me strongly type arguments and let them be optional. You basically wrap your function in a proxy. If you skip an argument, it's undefined. It may get quirky if you have multiple optional arguments with the same type right next to each other. (There are options to pass functions instead of types to do custom argument checks, as well as specifying default values for each parameter.)
This is what the implementation looks like:
function displayOverlay(/*message, timeout, callback*/) {
return arrangeArgs(arguments, String, Number, Function,
function(message, timeout, callback) {
/* ... your code ... */
});
};
For clarity, here is what is going on:
function displayOverlay(/*message, timeout, callback*/) {
//arrangeArgs is the proxy
return arrangeArgs(
//first pass in the original arguments
arguments,
//then pass in the type for each argument
String, Number, Function,
//lastly, pass in your function and the proxy will do the rest!
function(message, timeout, callback) {
//debug output of each argument to verify it's working
console.log("message", message, "timeout", timeout, "callback", callback);
/* ... your code ... */
}
);
};
You can view the arrangeArgs proxy code in my GitHub repository here:
https://github.com/joelvh/Sysmo.js/blob/master/sysmo.js
Here is the utility function with some comments copied from the repository:
/*
****** Overview ******
*
* Strongly type a function's arguments to allow for any arguments to be optional.
*
* Other resources:
* http://ejohn.org/blog/javascript-method-overloading/
*
****** Example implementation ******
*
* //all args are optional... will display overlay with default settings
* var displayOverlay = function() {
* return Sysmo.optionalArgs(arguments,
* String, [Number, false, 0], Function,
* function(message, timeout, callback) {
* var overlay = new Overlay(message);
* overlay.timeout = timeout;
* overlay.display({onDisplayed: callback});
* });
* }
*
****** Example function call ******
*
* //the window.alert() function is the callback, message and timeout are not defined.
* displayOverlay(alert);
*
* //displays the overlay after 500 miliseconds, then alerts... message is not defined.
* displayOverlay(500, alert);
*
****** Setup ******
*
* arguments = the original arguments to the function defined in your javascript API.
* config = describe the argument type
* - Class - specify the type (e.g. String, Number, Function, Array)
* - [Class/function, boolean, default] - pass an array where the first value is a class or a function...
* The "boolean" indicates if the first value should be treated as a function.
* The "default" is an optional default value to use instead of undefined.
*
*/
arrangeArgs: function (/* arguments, config1 [, config2] , callback */) {
//config format: [String, false, ''], [Number, false, 0], [Function, false, function(){}]
//config doesn't need a default value.
//config can also be classes instead of an array if not required and no default value.
var configs = Sysmo.makeArray(arguments),
values = Sysmo.makeArray(configs.shift()),
callback = configs.pop(),
args = [],
done = function() {
//add the proper number of arguments before adding remaining values
if (!args.length) {
args = Array(configs.length);
}
//fire callback with args and remaining values concatenated
return callback.apply(null, args.concat(values));
};
//if there are not values to process, just fire callback
if (!values.length) {
return done();
}
//loop through configs to create more easily readable objects
for (var i = 0; i < configs.length; i++) {
var config = configs[i];
//make sure there's a value
if (values.length) {
//type or validator function
var fn = config[0] || config,
//if config[1] is true, use fn as validator,
//otherwise create a validator from a closure to preserve fn for later use
validate = (config[1]) ? fn : function(value) {
return value.constructor === fn;
};
//see if arg value matches config
if (validate(values[0])) {
args.push(values.shift());
continue;
}
}
//add a default value if there is no value in the original args
//or if the type didn't match
args.push(config[2]);
}
return done();
}
cls
implies that method belongs to the class while self implies that the method is related to instance of the class,therefore member with cls
is accessed by class name where as the one with self is accessed by instance of the class...it is the same concept as static member
and non-static members
in java if you are from java background.
If you mean you want to delete a drop from a table if it exists, you can use the DELETE
command, for example:
DELETE FROM users WHERE user_login = 'foobar'
If no rows match, it's not an error.
In order to see the changes that have been staged already, you can pass the -–staged
option to git diff
(in pre-1.6 versions of Git, use –-cached
).
git diff --staged
git diff --cached
Functor can also be used to simulate defining a local function within a function. Refer to the question and another.
But a local functor can not access outside auto variables. The lambda (C++11) function is a better solution.
You can do superscript with vertical-align: super
, (plus an accompanying font-size
reduction).
However, be sure to read the other answers here, particularly those by paulmurray and cletus, for useful information.
You can use split function.
SELECT
(select top 1 item from dbo.Split(FullName,',') where id=1 ) Column1,
(select top 1 item from dbo.Split(FullName,',') where id=2 ) Column2,
(select top 1 item from dbo.Split(FullName,',') where id=3 ) Column3,
(select top 1 item from dbo.Split(FullName,',') where id=4 ) Column4,
FROM MyTbl
Threads -- > Threads shares a memory space,it is an abstraction of the CPU,it is lightweight. Processes --> Processes have their own memory space,it is an abstraction of a computer. To parallelise task you need to abstract a CPU. However the advantages of using a process over a thread is security,stability while a thread uses lesser memory than process and offers lesser latency. An example in terms of web would be chrome and firefox. In case of Chrome each tab is a new process hence memory usage of chrome is higher than firefox ,while the security and stability provided is better than firefox. The security here provided by chrome is better,since each tab is a new process different tab cannot snoop into the memory space of a given process.
I'm using Visual Studio 2017.
It will publish, complete with setup file to the location you specified.
Hope this helps
You can also use:
sed -n 's/.*\/\([^\/]\{1,\}\)$/\1/p'
or
sed -n 's/.*\/\([^\/]*\)$/\1/p'
You create __main__.py
in yourpackage
to make it executable as:
$ python -m yourpackage
Try over-riding CSS using !important
like this
.icon-bar {
background-color:#FF0000 !important;
}
In addition to ways already mentioned.. can use 'viewitems', 'viewkeys', 'viewvalues'
>>> d = {320: 1, 321: 0, 322: 3}
>>> list(d.viewitems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.viewkeys())
[320, 321, 322]
>>> list(d.viewvalues())
[1, 0, 3]
Or
>>> list(d.iteritems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.iterkeys())
[320, 321, 322]
>>> list(d.itervalues())
[1, 0, 3]
or using itemgetter
>>> from operator import itemgetter
>>> map(itemgetter(0), dd.items()) #### for keys
['323', '332']
>>> map(itemgetter(1), dd.items()) #### for values
['3323', 232]
To reduce cyclomatic complexity use a map:
Map<String,Callable<Object>> map = new HashMap < > ( ) ;
map . put ( "apple" , new Callable<Object> () { public Object call ( method1 ( ) ; return null ; } ) ;
...
map . get ( x ) . call ( ) ;
or polymorphism
In this case that you know that you have all items in the first place on array you can parse the string to JArray and then parse the first item using JObject.Parse
var jsonArrayString = @"
[
{
""country"": ""India"",
""city"": ""Mall Road, Gurgaon"",
},
{
""country"": ""India"",
""city"": ""Mall Road, Kanpur"",
}
]";
JArray jsonArray = JArray.Parse(jsonArrayString);
dynamic data = JObject.Parse(jsonArray[0].ToString());
You can't use it from the XML.
You need to extend the widget you are using in the XML and add the logic to set the text using what's mentioned on Konstantin Burov's answer.
The only way I can get this to work is to manually instantiate the section handler type, pass the raw XML to it, and cast the resulting object.
Seems pretty inefficient, but there you go.
I wrote an extension method to encapsulate this:
public static class ConfigurationSectionExtensions
{
public static T GetAs<T>(this ConfigurationSection section)
{
var sectionInformation = section.SectionInformation;
var sectionHandlerType = Type.GetType(sectionInformation.Type);
if (sectionHandlerType == null)
{
throw new InvalidOperationException(string.Format("Unable to find section handler type '{0}'.", sectionInformation.Type));
}
IConfigurationSectionHandler sectionHandler;
try
{
sectionHandler = (IConfigurationSectionHandler)Activator.CreateInstance(sectionHandlerType);
}
catch (InvalidCastException ex)
{
throw new InvalidOperationException(string.Format("Section handler type '{0}' does not implement IConfigurationSectionHandler.", sectionInformation.Type), ex);
}
var rawXml = sectionInformation.GetRawXml();
if (rawXml == null)
{
return default(T);
}
var xmlDocument = new XmlDocument();
xmlDocument.LoadXml(rawXml);
return (T)sectionHandler.Create(null, null, xmlDocument.DocumentElement);
}
}
The way you would call it in your example is:
var map = new ExeConfigurationFileMap
{
ExeConfigFilename = @"c:\\foo.config"
};
var configuration = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None);
var myParamsSection = configuration.GetSection("MyParams");
var myParamsCollection = myParamsSection.GetAs<NameValueCollection>();
If you understand the difference between scope and session then it will be very easy to understand these methods.
A very nice blog post by Adam Anderson describes this difference:
Session means the current connection that's executing the command.
Scope means the immediate context of a command. Every stored procedure call executes in its own scope, and nested calls execute in a nested scope within the calling procedure's scope. Likewise, a SQL command executed from an application or SSMS executes in its own scope, and if that command fires any triggers, each trigger executes within its own nested scope.
Thus the differences between the three identity retrieval methods are as follows:
@@identity
returns the last identity value generated in this session but any scope.
scope_identity()
returns the last identity value generated in this session and this scope.
ident_current()
returns the last identity value generated for a particular table in any session and any scope.
Well, you can follow them :). But I don't think that doing a commit and then resetting the branch to remove that commit and similar workarounds suggested in other answers are the clean way to solve this issue.
The following solution seems to be much cleaner to me and it's also suggested by the Git itself — try to execute git status
in the repository with a conflict:
Unmerged paths:
(use "git reset HEAD <file>..." to unstage)
(use "git add <file>..." to mark resolution)
So let's do what Git suggests (without doing any useless commits):
git reset
to mark conflict(s) as resolved and unstage the changes. You can execute it without any parameters and Git will remove everything from the index. You don't have to execute git add
before.git stash drop
, because Git doesn't do that on conflict.Translated to the command-line:
$ git stash pop
# ...resolve conflict(s)
$ git reset
$ git stash drop
There are two ways of marking conflicts as resolved: git add
and git reset
. While git reset
marks the conflicts as resolved and removes files from the index, git add
also marks the conflicts as resolved, but keeps files in the index.
Adding files to the index after a conflict is resolved is on purpose. This way you can differentiate the changes from the previous stash and changes you made after the conflict was resolved. If you don't like it, you can always use git reset
to remove everything from the index.
I highly recommend using any of 3-way merge tools for resolving conflicts, e.g. KDiff3, Meld, etc., instead of doing it manually. It usually solves all or majority of conflicts automatically itself. It's huge time-saver!
I also had an issue with multiline strings in this scenario. @Iman's backtick(`) solution worked great in the modern browsers but caused an invalid character error in Internet Explorer. I had to use the following:
'@item.MultiLineString.Replace(Environment.NewLine, "<br />")'
Then I had to put the carriage returns back again in the js function. Had to use RegEx to handle multiple carriage returns.
// This will work for the following:
// "hello\nworld"
// "hello<br>world"
// "hello<br />world"
$("#MyTextArea").val(multiLineString.replace(/\n|<br\s*\/?>/gi, "\r"));
As per David Manpearl answer
https://stackoverflow.com/a/12347567/7226732
we just need to modify onActivityResult() like
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == YOUR_SELECT_PICTURE_REQUEST_CODE) {
final boolean isCamera;
if (data.getExtras() == null) {
isCamera = true;
} else {
final String action = data.getAction();
if (action == null) {
isCamera = false;
} else {
isCamera = action.equals(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
}
}
Uri selectedImageUri;
if (isCamera) {
selectedImageUri = fileUri;
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImageUri);
Toast.makeText(CreateWaterType.this, "Image Saved!", Toast.LENGTH_SHORT).show();
image_view.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(CreateWaterType.this, "Failed!", Toast.LENGTH_SHORT).show();
}
} else {
selectedImageUri = data == null ? null : data.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImageUri);
Toast.makeText(CreateWaterType.this, "Image Saved!", Toast.LENGTH_SHORT).show();
image_view.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(CreateWaterType.this, "Failed!", Toast.LENGTH_SHORT).show();
}
}
}
}
}
and set the capture or pick images in image view.
If, like me, you need to target v4 but can only build with .net 3.5, follow the instruction here. Just replace in your web.config the whole content of the <configSections>
with:
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
What about this approach? Works for me. It is also used in django-registration.
def get_request_root_url(self):
scheme = 'https' if self.request.is_secure() else 'http'
site = get_current_site(self.request)
return '%s://%s' % (scheme, site)
If you need textarea with auto height, Use follows with pure javascript,
function auto_height(elem) { /* javascript */_x000D_
elem.style.height = "1px";_x000D_
elem.style.height = (elem.scrollHeight)+"px";_x000D_
}
_x000D_
.auto_height { /* CSS */_x000D_
width: 100%;_x000D_
}
_x000D_
<textarea rows="1" class="auto_height" oninput="auto_height(this)"></textarea>
_x000D_
Well, what do you try to do? If you want to use division, use "/" not "\". If it is something else, explain it in a bit more detail, please.
In Python, a list
is a dynamic array. You can create one like this:
lst = [] # Declares an empty list named lst
Or you can fill it with items:
lst = [1,2,3]
You can add items using "append":
lst.append('a')
You can iterate over elements of the list using the for
loop:
for item in lst:
# Do something with item
Or, if you'd like to keep track of the current index:
for idx, item in enumerate(lst):
# idx is the current idx, while item is lst[idx]
To remove elements, you can use the del command or the remove function as in:
del lst[0] # Deletes the first item
lst.remove(x) # Removes the first occurence of x in the list
Note, though, that one cannot iterate over the list and modify it at the same time; to do that, you should instead iterate over a slice of the list (which is basically a copy of the list). As in:
for item in lst[:]: # Notice the [:] which makes a slice
# Now we can modify lst, since we are iterating over a copy of it
First you can get the rowid
of the selected row with respect of getGridParam
method and 'selrow' as the parameter and then you can use getCell to get the cell value from the corresponding column:
var myGrid = $('#list'),
selRowId = myGrid.jqGrid ('getGridParam', 'selrow'),
celValue = myGrid.jqGrid ('getCell', selRowId, 'columnName');
The 'columnName'
should be the same name which you use in the 'name'
property of the colModel
. If you need values from many column of the selected row you can use getRowData instead of getCell.
I would actually write my own little function that does the trick by using plain old char access:
public static String trimBackslash( String str )
{
int len, left, right;
return str == null || ( len = str.length() ) == 0
|| ( ( left = str.charAt( 0 ) == '\\' ? 1 : 0 ) |
( right = len > left && str.charAt( len - 1 ) == '\\' ? 1 : 0 ) ) == 0
? str : str.substring( left, len - right );
}
This behaves similar to what String.trim() does, only that it works with '\' instead of space.
Here is one alternative that works and actually uses trim(). ;) Althogh it's not very efficient it will probably beat all regexp based approaches performance wise.
String j = “\joe\jill\”;
j = j.replace( '\\', '\f' ).trim().replace( '\f', '\\' );
This method works for me very well.
// Recursive method to recover files and folders and to print the information
public static void listFiles(String directoryName) {
File file = new File(directoryName);
File[] fileList = file.listFiles(); // List files inside the main dir
int j;
String extension;
String fileName;
if (fileList != null) {
for (int i = 0; i < fileList.length; i++) {
extension = "";
if (fileList[i].isFile()) {
fileName = fileList[i].getName();
if (fileName.lastIndexOf(".") != -1 && fileName.lastIndexOf(".") != 0) {
extension = fileName.substring(fileName.lastIndexOf(".") + 1);
System.out.println("THE " + fileName + " has the extension = " + extension);
} else {
extension = "Unknown";
System.out.println("extension2 = " + extension);
}
filesCount++;
allStats.add(new FilePropBean(filesCount, fileList[i].getName(), fileList[i].length(), extension,
fileList[i].getParent()));
} else if (fileList[i].isDirectory()) {
filesCount++;
extension = "";
allStats.add(new FilePropBean(filesCount, fileList[i].getName(), fileList[i].length(), extension,
fileList[i].getParent()));
listFiles(String.valueOf(fileList[i]));
}
}
}
}
ev
icon next to elements
Within the Firefox Developer Tools' Inspector panel lists all events bound to an element.
First select an element with Ctrl + Shift + C, e.g. Stack Overflow's upvote arrow.
Click on the ev
icon to the right of the element, and a dialogue opens:
Click on the pause sign ||
symbol for the event you want, and this opens the debugger on the line of the handler.
You can now place a breakpoint there as usual in the debugger, by clicking on the left margin of the line.
This is mentioned at: https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Examine_event_listeners
Unfortunately, I couldn't find a way for this to play nicely with prettyfication, it just seems to open at the minified line: How to beautify Javascript and CSS in Firefox / Firebug?
Tested on Firefox 42.
In a project I worked at we solved this problem by implement something we called 'Batch' requests. We defined a path /batch
where we accepted json in the following format:
[
{
path: '/docs',
method: 'post',
body: {
doc_number: 1,
binder: 1
}
},
{
path: '/docs',
method: 'post',
body: {
doc_number: 5,
binder: 8
}
},
{
path: '/docs',
method: 'post',
body: {
doc_number: 6,
binder: 3
}
},
]
The response have the status code 207 (Multi-Status) and looks like this:
[
{
path: '/docs',
method: 'post',
body: {
doc_number: 1,
binder: 1
}
status: 200
},
{
path: '/docs',
method: 'post',
body: {
error: {
msg: 'A document with doc_number 5 already exists'
...
}
},
status: 409
},
{
path: '/docs',
method: 'post',
body: {
doc_number: 6,
binder: 3
},
status: 200
},
]
You could also add support for headers in this structure. We implemented something that proved useful which was variables to use between requests in a batch, meaning we can use the response from one request as input to another.
Facebook and Google have similar implementations:
https://developers.google.com/gmail/api/guides/batch
https://developers.facebook.com/docs/graph-api/making-multiple-requests
When you want to create or update a resource with the same call I would use either POST or PUT depending on the case. If the document already exist, do you want the entire document to be:
In case you want the behavior from alternative 1 you should use a POST and in case you want the behavior from alternative 2 you should use PUT.
http://restcookbook.com/HTTP%20Methods/put-vs-post/
As people already suggested you could also go for PATCH, but I prefer to keep API's simple and not use extra verbs if they are not needed.
You could simply add a click listener on the map inside the function that creates the InfoWindow
google.maps.event.addListener(marker, 'click', function() {
var infoWindow = createInfoWindowForMarker(marker);
infoWindow.open(map, marker);
google.maps.event.addListener(map, 'click', function() {
infoWindow.close();
});
});
I like the other suggestions but I would rather not update the machine.config for a single application. I suggest that you just add it to the web.config / app.config. Here is what I needed to use the MySql Connector/NET that I "bin" deployed.
<system.data>
<DbProviderFactories >
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.6.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
df.index
Index
object. list(df.index)
df.index['Row 2':'Row 5']
If I first install BLAS, LAPACK and GCC Fortran as system packages (I'm using Arch Linux), I can get SciPy installed with:
pip install scipy
TLDR:
I wrote a library that allows you to do this:
from fluidIter import FluidIterable
fSomeList = FluidIterable(someList)
for tup in fSomeList:
if determine(tup):
# remove 'tup' without "breaking" the iteration
fSomeList.remove(tup)
# tup has also been removed from 'someList'
# as well as 'fSomeList'
It's best to use another method if possible that doesn't require modifying your iterable while iterating over it, but for some algorithms it might not be that straight forward. And so if you are sure that you really do want the code pattern described in the original question, it is possible.
Should work on all mutable sequences not just lists.
Full answer:
Edit: The last code example in this answer gives a use case for why you might sometimes want to modify a list in place rather than use a list comprehension. The first part of the answers serves as tutorial of how an array can be modified in place.
The solution follows on from this answer (for a related question) from senderle. Which explains how the the array index is updated while iterating through a list that has been modified. The solution below is designed to correctly track the array index even if the list is modified.
Download fluidIter.py
from here https://github.com/alanbacon/FluidIterator
, it is just a single file so no need to install git. There is no installer so you will need to make sure that the file is in the python path your self. The code has been written for python 3 and is untested on python 2.
from fluidIter import FluidIterable
l = [0,1,2,3,4,5,6,7,8]
fluidL = FluidIterable(l)
for i in fluidL:
print('initial state of list on this iteration: ' + str(fluidL))
print('current iteration value: ' + str(i))
print('popped value: ' + str(fluidL.pop(2)))
print(' ')
print('Final List Value: ' + str(l))
This will produce the following output:
initial state of list on this iteration: [0, 1, 2, 3, 4, 5, 6, 7, 8]
current iteration value: 0
popped value: 2
initial state of list on this iteration: [0, 1, 3, 4, 5, 6, 7, 8]
current iteration value: 1
popped value: 3
initial state of list on this iteration: [0, 1, 4, 5, 6, 7, 8]
current iteration value: 4
popped value: 4
initial state of list on this iteration: [0, 1, 5, 6, 7, 8]
current iteration value: 5
popped value: 5
initial state of list on this iteration: [0, 1, 6, 7, 8]
current iteration value: 6
popped value: 6
initial state of list on this iteration: [0, 1, 7, 8]
current iteration value: 7
popped value: 7
initial state of list on this iteration: [0, 1, 8]
current iteration value: 8
popped value: 8
Final List Value: [0, 1]
Above we have used the pop
method on the fluid list object. Other common iterable methods are also implemented such as del fluidL[i]
, .remove
, .insert
, .append
, .extend
. The list can also be modified using slices (sort
and reverse
methods are not implemented).
The only condition is that you must only modify the list in place, if at any point fluidL
or l
were reassigned to a different list object the code would not work. The original fluidL
object would still be used by the for loop but would become out of scope for us to modify.
i.e.
fluidL[2] = 'a' # is OK
fluidL = [0, 1, 'a', 3, 4, 5, 6, 7, 8] # is not OK
If we want to access the current index value of the list we cannot use enumerate, as this only counts how many times the for loop has run. Instead we will use the iterator object directly.
fluidArr = FluidIterable([0,1,2,3])
# get iterator first so can query the current index
fluidArrIter = fluidArr.__iter__()
for i, v in enumerate(fluidArrIter):
print('enum: ', i)
print('current val: ', v)
print('current ind: ', fluidArrIter.currentIndex)
print(fluidArr)
fluidArr.insert(0,'a')
print(' ')
print('Final List Value: ' + str(fluidArr))
This will output the following:
enum: 0
current val: 0
current ind: 0
[0, 1, 2, 3]
enum: 1
current val: 1
current ind: 2
['a', 0, 1, 2, 3]
enum: 2
current val: 2
current ind: 4
['a', 'a', 0, 1, 2, 3]
enum: 3
current val: 3
current ind: 6
['a', 'a', 'a', 0, 1, 2, 3]
Final List Value: ['a', 'a', 'a', 'a', 0, 1, 2, 3]
The FluidIterable
class just provides a wrapper for the original list object. The original object can be accessed as a property of the fluid object like so:
originalList = fluidArr.fixedIterable
More examples / tests can be found in the if __name__ is "__main__":
section at the bottom of fluidIter.py
. These are worth looking at because they explain what happens in various situations. Such as: Replacing a large sections of the list using a slice. Or using (and modifying) the same iterable in nested for loops.
As I stated to start with: this is a complicated solution that will hurt the readability of your code and make it more difficult to debug. Therefore other solutions such as the list comprehensions mentioned in David Raznick's answer should be considered first. That being said, I have found times where this class has been useful to me and has been easier to use than keeping track of the indices of elements that need deleting.
Edit: As mentioned in the comments, this answer does not really present a problem for which this approach provides a solution. I will try to address that here:
List comprehensions provide a way to generate a new list but these approaches tend to look at each element in isolation rather than the current state of the list as a whole.
i.e.
newList = [i for i in oldList if testFunc(i)]
But what if the result of the testFunc
depends on the elements that have been added to newList
already? Or the elements still in oldList
that might be added next? There might still be a way to use a list comprehension but it will begin to lose it's elegance, and for me it feels easier to modify a list in place.
The code below is one example of an algorithm that suffers from the above problem. The algorithm will reduce a list so that no element is a multiple of any other element.
randInts = [70, 20, 61, 80, 54, 18, 7, 18, 55, 9]
fRandInts = FluidIterable(randInts)
fRandIntsIter = fRandInts.__iter__()
# for each value in the list (outer loop)
# test against every other value in the list (inner loop)
for i in fRandIntsIter:
print(' ')
print('outer val: ', i)
innerIntsIter = fRandInts.__iter__()
for j in innerIntsIter:
innerIndex = innerIntsIter.currentIndex
# skip the element that the outloop is currently on
# because we don't want to test a value against itself
if not innerIndex == fRandIntsIter.currentIndex:
# if the test element, j, is a multiple
# of the reference element, i, then remove 'j'
if j%i == 0:
print('remove val: ', j)
# remove element in place, without breaking the
# iteration of either loop
del fRandInts[innerIndex]
# end if multiple, then remove
# end if not the same value as outer loop
# end inner loop
# end outerloop
print('')
print('final list: ', randInts)
The output and the final reduced list are shown below
outer val: 70
outer val: 20
remove val: 80
outer val: 61
outer val: 54
outer val: 18
remove val: 54
remove val: 18
outer val: 7
remove val: 70
outer val: 55
outer val: 9
remove val: 18
final list: [20, 61, 7, 55, 9]
According to Jean-Paul Calderone's Filesystem structure of a Python project:
Project/
|-- bin/
| |-- project
|
|-- project/
| |-- test/
| | |-- __init__.py
| | |-- test_main.py
| |
| |-- __init__.py
| |-- main.py
|
|-- setup.py
|-- README
TLDR; (semi-related to an EF editor bug in EF6/VS2012U5) if you generate the model from DB and you cannot see the attributed m:m table: Delete the two related tables -> Save .edmx -> Generate/add from database -> Save.
For those who came here wondering how to get a many-to-many relationship with attribute columns to show in the EF .edmx file (as it would currently not show and be treated as a set of navigational properties), AND you generated these classes from your database table (or database-first in MS lingo, I believe.)
Delete the 2 tables in question (to take the OP example, Member and Comment) in your .edmx and add them again through 'Generate model from database'. (i.e. do not attempt to let Visual Studio update them - delete, save, add, save)
It will then create a 3rd table in line with what is suggested here.
This is relevant in cases where a pure many-to-many relationship is added at first, and the attributes are designed in the DB later.
This was not immediately clear from this thread/Googling. So just putting it out there as this is link #1 on Google looking for the issue but coming from the DB side first.
Ideally you shouldn't be splitting strings in T-SQL at all.
Barring that change, on older versions before SQL Server 2016, create a split function:
CREATE FUNCTION dbo.SplitStrings
(
@List nvarchar(max),
@Delimiter nvarchar(2)
)
RETURNS TABLE
WITH SCHEMABINDING
AS
RETURN ( WITH x(x) AS
(
SELECT CONVERT(xml, N'<root><i>'
+ REPLACE(@List, @Delimiter, N'</i><i>')
+ N'</i></root>')
)
SELECT Item = LTRIM(RTRIM(i.i.value(N'.',N'nvarchar(max)')))
FROM x CROSS APPLY x.nodes(N'//root/i') AS i(i)
);
GO
Now you can say:
DECLARE @Values varchar(1000);
SET @Values = 'A, B, C';
SELECT blah
FROM dbo.foo
INNER JOIN dbo.SplitStrings(@Values, ',') AS s
ON s.Item = foo.myField;
On SQL Server 2016 or above (or Azure SQL Database), it is much simpler and more efficient, however you do have to manually apply LTRIM()
to take away any leading spaces:
DECLARE @Values varchar(1000) = 'A, B, C';
SELECT blah
FROM dbo.foo
INNER JOIN STRING_SPLIT(@Values, ',') AS s
ON LTRIM(s.value) = foo.myField;
Check this list: