I came here looking for how to delete empty __init__.py
files as they are implicit in Python 3.3+ and ended up using:
find -depth '(' -type f -name __init__.py ')' -print0 |
while IFS= read -d '' -r file; do if [[ ! -s $file ]]; then rm $file; fi; done
Also (at least in zsh) using $path as the variable also breaks your $PATH env and so it'll break your open shell. Anyway, thought I'd share!
As of now, the Go compiler generates identical code in both cases, so it is a matter of taste. GCCGo does generate different code, but barely anyone uses it so I wouldn't worry about that.
Did you try this?
UPDATE table
SET col1 = NULL
WHERE col1 = ''
As the commenters point out, you don't have to do ltrim()
or rtrim()
, and NULL
columns will not match ''
.
To stick to ==
without consideration of the other type, the following is also possible.
type(a) == type(None)
Using JS and CSS :not pseudoclass
input {_x000D_
font-size: 13px;_x000D_
padding: 5px;_x000D_
width: 100px;_x000D_
}_x000D_
_x000D_
input[value=""] {_x000D_
border: 2px solid #fa0000;_x000D_
}_x000D_
_x000D_
input:not([value=""]) {_x000D_
border: 2px solid #fafa00;_x000D_
}
_x000D_
<input type="text" onkeyup="this.setAttribute('value', this.value);" value="" />_x000D_
_x000D_
_x000D_
An object of a class cannot be set to NULL; however, you can set a pointer (which contains a memory address of an object) to NULL.
Example of what you can't do which you are asking:
Cat c;
c = NULL;//Compiling error
Example of what you can do:
Cat c;
//Set p to hold the memory address of the object c
Cat *p = &c;
//Set p to hold NULL
p = NULL;
Use the ternary operator (also known as the conditional operator, C++ forever!
):
if stringA != nil ? stringA!.isEmpty == false : false { /* ... */ }
The stringA!
force-unwrapping happens only when stringA != nil
, so it is safe. The == false
verbosity is somewhat more readable than yet another exclamation mark in !(stringA!.isEmpty)
.
I personally prefer a slightly different form:
if stringA == nil ? false : stringA!.isEmpty == false { /* ... */ }
In the statement above, it is immediately very clear that the entire if
block does not execute when a variable is nil
.
If you have to test more than one string in the same validation, you can do something like this:
import java.util.Optional;
import java.util.function.Predicate;
import java.util.stream.Stream;
public class StringHelper {
public static Boolean hasBlank(String ... strings) {
Predicate<String> isBlank = s -> s == null || s.trim().isEmpty();
return Optional
.ofNullable(strings)
.map(Stream::of)
.map(stream -> stream.anyMatch(isBlank))
.orElse(false);
}
}
So, you can use this like StringHelper.hasBlank("Hello", null, "", " ")
or StringHelper.hasBlank("Hello")
in a generic form.
To check if a Variant
is Null, you need to do it like:
Isnull(myvar) = True
or
Not Isnull(myvar)
The question asks how to check if a variable is an empty string and the best answers are already given for that.
But I landed here after a period passed programming in PHP, and I was actually searching for a check like the empty function in PHP working in a Bash shell.
After reading the answers I realized I was not thinking properly in Bash, but anyhow in that moment a function like empty in PHP would have been soooo handy in my Bash code.
As I think this can happen to others, I decided to convert the PHP empty function in Bash.
According to the PHP manual:
a variable is considered empty if it doesn't exist or if its value is one of the following:
Of course the null and false cases cannot be converted in bash, so they are omitted.
function empty
{
local var="$1"
# Return true if:
# 1. var is a null string ("" as empty string)
# 2. a non set variable is passed
# 3. a declared variable or array but without a value is passed
# 4. an empty array is passed
if test -z "$var"
then
[[ $( echo "1" ) ]]
return
# Return true if var is zero (0 as an integer or "0" as a string)
elif [ "$var" == 0 2> /dev/null ]
then
[[ $( echo "1" ) ]]
return
# Return true if var is 0.0 (0 as a float)
elif [ "$var" == 0.0 2> /dev/null ]
then
[[ $( echo "1" ) ]]
return
fi
[[ $( echo "" ) ]]
}
Example of usage:
if empty "${var}"
then
echo "empty"
else
echo "not empty"
fi
Demo:
The following snippet:
#!/bin/bash
vars=(
""
0
0.0
"0"
1
"string"
" "
)
for (( i=0; i<${#vars[@]}; i++ ))
do
var="${vars[$i]}"
if empty "${var}"
then
what="empty"
else
what="not empty"
fi
echo "VAR \"$var\" is $what"
done
exit
outputs:
VAR "" is empty
VAR "0" is empty
VAR "0.0" is empty
VAR "0" is empty
VAR "1" is not empty
VAR "string" is not empty
VAR " " is not empty
Having said that in a Bash logic the checks on zero in this function can cause side problems imho, anyone using this function should evaluate this risk and maybe decide to cut those checks off leaving only the first one.
You should absolutely use isEmpty()
. Computing the size()
of an arbitrary list could be expensive. Even validating whether it has any elements can be expensive, of course, but there's no optimization for size()
which can't also make isEmpty()
faster, whereas the reverse is not the case.
For example, suppose you had a linked list structure which didn't cache the size (whereas LinkedList<E>
does). Then size()
would become an O(N) operation, whereas isEmpty()
would still be O(1)
.
Additionally of course, using isEmpty()
states what you're actually interested in more clearly.
in case of checking the empty string simply
if (str.length){
//do something
}
if you also want to include null & undefined with your check simply
if (Boolean(str)){
//this will be true when the str is not empty nor null nor undefined
}
You should check for ''
(empty string) before pushing into your array. Your array has elements that are empty strings. Then your album_text.length === 0
will work just fine.
Simply use the base transpose function t
, wrapped with as.data.frame
:
final_df <- as.data.frame(t(starting_df))
final_df
A B C D
a 1 2 3 4
b 0.02 0.04 0.06 0.08
c Aaaa Bbbb Cccc Dddd
Above updated. As docendo discimus pointed out, t
returns a matrix. As Mark suggested wrapping it with as.data.frame
gets back a data frame instead of a matrix. Thanks!
If you are using Chrome, you could also use
console.log( yourArray );
Yes. Please see the man page of bash ( the first thing you go to ) under Special Parameters
Special Parameters
The shell treats several parameters specially. These parameters may only be referenced; assignment to them is not allowed.
*
Expands to the positional parameters, starting from one. When the expansion occurs within double quotes, it expands to a single word with the value of each parameter separated by the first character of the IFS special variable. That is,"$*"
is equivalent to"$1c$2c..."
, wherec
is the first character of the value of the IFS variable. If IFS is unset, the parameters are separated by spaces. If IFS is null, the parameters are joined without intervening separators.
@
Expands to the positional parameters, starting from one. When the expansion occurs within double quotes, each parameter expands to a separate word. That is,"$@"
is equivalent to"$1"
"$2"
... If the double-quoted expansion occurs within a word, the expansion of the first parameter is joined with the beginning part of the original word, and the expansion of the last parameter is joined with the last part of the original word. When there are no positional parameters,"$@"
and$@
expand to nothing (i.e., they are removed).
I have the same problem today, stuck on the kb2999226 for over an hour. First, i thought it is because i am using a VM on my local machine. But decided to cancel the installation, then install kb2999226 first, then install the vs2015 community again, it works out much better, the installation move forward and progressing. thx.
((SelectionListViewController *)myEditController).list
More examples:
int i = (int)19.5f; // (precision is lost)
id someObject = [NSMutableArray new]; // you don't need to cast id explicitly
CONVERT(VARCHAR(32), HashBytes('MD5', '[email protected]'), 2)
The underlying type of a variadic method function(Object... args)
is function(Object[] args)
. Sun added varargs in this manner to preserve backwards compatibility.
So you should just be able to prepend extraVar
to args
and call String.format(format, args)
.
Here is the sample "Map" implementation in Go. Hope this helps!!
func square(num int) int {
return num * num
}
func mapper(f func(int) int, alist []int) []int {
var a = make([]int, len(alist), len(alist))
for index, val := range alist {
a[index] = f(val)
}
return a
}
func main() {
alist := []int{4, 5, 6, 7}
result := mapper(square, alist)
fmt.Println(result)
}
getopt Use command in your scripts to format any command line options or parameters.
#!/bin/bash
# Extract command line options & values with getopt
#
set -- $(getopt -q ab:cd "$@")
#
echo
while [ -n "$1" ]
do
case "$1" in
-a) echo "Found the -a option" ;;
-b) param="$2"
echo "Found the -b option, with parameter value $param"
shift ;;
-c) echo "Found the -c option" ;;
--) shift
break ;;
*) echo "$1 is not an option";;
esac
shift
This can also occur when the path ends in a '' followed by the closing quotation mark. e.g. The following line is passed as one of the arguments and this is not right:
"c:\users\abc\"
instead pass that argument as shown below so that the last backslash is escaped instead of escaping the quotation mark.
"c:\users\abc\\"
The answer is: It depends.
Although base64-images are larger, there a few conditions where base64 is the better choice.
Size of base64-images
Base64 uses 64 different characters and this is 2^6. So base64 stores 6bit per 8bit character. So the proportion is 6/8 from unconverted data to base64 data. This is no exact calculation, but a rough estimate.
Example:
An 48kb image needs around 64kb as base64 converted image.
Calculation: (48 / 6) * 8 = 64
Simple CLI calculator on Linux systems:
$ cat /dev/urandom|head -c 48000|base64|wc -c
64843
Or using an image:
$ cat my.png|base64|wc -c
Base64-images and websites
This question is much more difficult to answer. Generally speaking, as larger the image as less sense using base64. But consider the following points:
You could also change resolution of your bluestacks emulator. For example from 800x1280 to 1280x800
Here are instructions for how to change the screen resolution.
To change screen resolution in BlueStacks Android emulator you need to edit two registry items:
Run regedit.exe
Set new resolution (in decimal):
HKEY_LOCAL_MACHINE\SOFTWARE\BlueStacks\Guests\Android\FrameBuffer\0\Height
and
HKEY_LOCAL_MACHINE\SOFTWARE\BlueStacks\Guests\Android\FrameBuffer\0\Width
Kill all BlueStacks processes.
Restart BlueStacks
use a HEREDOC, which eliminates any need to swap quote types and/or escape them:
echo <<<EOL
<script>$('#edit_errors').html('<h3><em><font color="red">Please Correct Errors Before Proceeding</font></em></h3>')</script>
EOL;
@Cermbo's answer is not related to this question. In their answer, Laravel will give you all Events
if each Event
has 'participants'
with IdUser
of 1
.
But if you want to get all Events
with all 'participants'
provided that all 'participants'
have a IdUser
of 1, then you should do something like this :
Event::with(["participants" => function($q){
$q->where('participants.IdUser', '=', 1);
}])
N.B:
in where
use your table name, not Model name.
I would recommend doing it like this to keep things in line with HTML5.
<meta charset="UTF-8">
EG:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
</body>
</html>
Simpler variant of thelsdj's answer:
ls -tr | head -n -5 | xargs --no-run-if-empty rm
ls -tr displays all the files, oldest first (-t newest first, -r reverse).
head -n -5 displays all but the 5 last lines (ie the 5 newest files).
xargs rm calls rm for each selected file.
This is shorter and works
<connectionStrings>
<add name="DBConnection"
connectionString="data source=SERVER\INSTANCE;
Initial Catalog=MyDB;Integrated Security=SSPI;"
providerName="System.Data.SqlClient" />
</connectionStrings>
Persist Security Info not needed
The following is another method that will work, although as with some of the other methods it will strip decimal places.
a = 1,112
b = a.scan(/\d+/).join().to_i => 1112
Maybe you want more simple and short approach. This will clear all TextBoxes too. (Except TextBoxes inside Panel or GroupBox).
foreach (TextBox textBox in Controls.OfType<TextBox>())
textBox.Text = "";
request.data
will be empty if request.headers["Content-Type"]
is recognized as form data, which will be parsed into request.form
. To get the raw data regardless of content type, use request.get_data()
.
request.data
calls request.get_data(parse_form_data=True)
, which results in the different behavior for form data.
You can open Xcode Help -> Run and debug -> Network debugging for more info. Hope it helps.
I also had the same problem. It's easy to divide integer numbers but decimal numbers are not that easy.
if you have 2 numbers like 3.14 and 2.35 and divide the numbers then,
the code will be Division=echo 3.14 / 2.35 | bc
echo "$Division"
the quotes are different. Don't be confused, it's situated just under the esc button on your keyboard.
THE ONLY DIFFERENCE IS THE | bc and also here echo works as an operator for the arithmetic calculations in stead of printing.
So, I had added echo "$Division" for printing the value. Let me know if it works for you. Thank you.
Slightly off topic but could be very useful as it could be the basis for other tasks you might want to do with simulators.
I like to keep my simulator list to a minimum, and since there is no multi-select in the "Devices and Simulators" it is a pain to delete them all.
So I boot all the sims that I want to use then, remove all the simulators that I don't have booted.
Delete all the shutdown simulators:
xcrun simctl list | grep -w "Shutdown" | grep -o "([-A-Z0-9]*)" | sed 's/[\(\)]//g' | xargs -I uuid xcrun simctl delete uuid
If you need individual simulators back, just add them back to the list in "Devices and Simulators" with the plus button.
You can't declare an extern
local method inside of a method, or any other method with an attribute. Move your DLL import into the class:
using System.Runtime.InteropServices;
public class WindowHandling
{
[DllImport("User32.dll")]
public static extern int SetForegroundWindow(IntPtr point);
public void ActivateTargetApplication(string processName, List<string> barcodesList)
{
Process p = Process.Start("notepad++.exe");
p.WaitForInputIdle();
IntPtr h = p.MainWindowHandle;
SetForegroundWindow(h);
SendKeys.SendWait("k");
IntPtr processFoundWindow = p.MainWindowHandle;
}
}
Lukas Knuth have good solution, but on android 4.0.4 on Samsung Galaxy SII I still look zoom controls. And I solve it via
if (zoom_controll!=null && zoom_controll.getZoomControls()!=null)
{
// Hide the controlls AFTER they where made visible by the default implementation.
zoom_controll.getZoomControls().setVisibility(View.GONE);
}
instead of
if (zoom_controll != null){
// Hide the controlls AFTER they where made visible by the default implementation.
zoom_controll.setVisible(false);
}
I know that we are (n-1) * (n times), but why the division by 2?
It's only (n - 1) * n
if you use a naive bubblesort. You can get a significant savings if you notice the following:
After each compare-and-swap, the largest element you've encountered will be in the last spot you were at.
After the first pass, the largest element will be in the last position; after the kth pass, the kth largest element will be in the kth last position.
Thus you don't have to sort the whole thing every time: you only need to sort n - 2 elements the second time through, n - 3 elements the third time, and so on. That means that the total number of compare/swaps you have to do is (n - 1) + (n - 2) + ...
. This is an arithmetic series, and the equation for the total number of times is (n - 1)*n / 2.
Example: if the size of the list is N = 5, then you do 4 + 3 + 2 + 1 = 10 swaps -- and notice that 10 is the same as 4 * 5 / 2.
You could use an extension method for fun. Typically I don't recommend attaching extension methods to such a general purpose class like string, but like I said this is fun. I borrowed @Luke's answer since there is no point in re-inventing the wheel.
[Test]
public void Should_remove_first_occurrance_of_string() {
var source = "ProjectName\\Iteration\\Release1\\Iteration1";
Assert.That(
source.RemoveFirst("\\Iteration"),
Is.EqualTo("ProjectName\\Release1\\Iteration1"));
}
public static class StringExtensions {
public static string RemoveFirst(this string source, string remove) {
int index = source.IndexOf(remove);
return (index < 0)
? source
: source.Remove(index, remove.Length);
}
}
Apache common lang3 has Pair class and few other libraries mentioned in this thread What is the equivalent of the C++ Pair<L,R> in Java?
Example matching the requirement from your original question:
List<Pair<String, Integer>> myPairs = new ArrayList<Pair<String, Integer>>();
myPairs.add(Pair.of("val1", 11));
myPairs.add(Pair.of("val2", 17));
//...
for(Pair<String, Integer> pair : myPairs) {
//following two lines are equivalent... whichever is easier for you...
System.out.println(pair.getLeft() + ": " + pair.getRight());
System.out.println(pair.getKey() + ": " + pair.getValue());
}
I had the same problem, when I used a inline-block on my menu I had the space between each "li" I found a simple solution, I don't remember where I found it, anyway here is what I did.
<li><a href="index.html" title="home" class="active">Home</a></li><!---->
<li><a href="news.html" title="news">News</a></li><!---->
<li><a href="about.html" title="about">About Us</a></li><!---->
<li><a href="contact.html" title="contact">Contact Us</a></li>
You add a comment sign between each end of, and start of : "li" Then the horizontal space disappear. Hope that answer to the question Thanks
Reinstall JDK and set system variable JAVA_HOME on your JDK. (e.g. C:\tools\jdk7)
And add JAVA_HOME variable to your PATH system variable
Type in command line
echo %JAVA_HOME%
and
java -version
To verify whether your installation was done successfully.
This problem generally occurs in Windows when your "Java Runtime Environment" registry entry is missing or mismatched with the installed JDK. The mismatch can be due to multiple JDKs.
Steps to resolve:
Open the Run window:
Press windows+R
Open registry window:
Type regedit
and enter.
Go to: \HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\
If Java Runtime Environment is not present inside JavaSoft, then create a new Key and give the name Java Runtime Environment.
For Java Runtime Environment create "CurrentVersion" String Key and give appropriate version as value:
Create a new subkey of 1.8.
For 1.8 create a String Key with name JavaHome with the value of JRE home:
Ref: https://mybindirectory.blogspot.com/2019/05/error-could-not-find-javadll.html
Use the error
handler like this:
$('#image_id').error(function() {
alert('Image does not exist !!');
});
If the image cannot be loaded (for example, because it is not present at the supplied URL), the alert is displayed:
Update:
I think using:
$.ajax({url:'somefile.dat',type:'HEAD',error:do_something});
would be enough to check for a 404.
More Readings:
Update 2:
Your code should be like this:
$(this).error(function() {
alert('Image does not exist !!');
});
No need for these lines and that won't check if the remote file exists anyway:
var imgcheck = imgsrc.width;
if (imgcheck==0) {
alert("You have a zero size image");
} else {
//execute the rest of code here
}
You could add the default rule with the alter table,
ALTER TABLE mytable ADD COLUMN created_at TIMESTAMP DEFAULT NOW()
then immediately set to null all the current existing rows:
UPDATE mytable SET created_at = NULL
Then from this point on the DEFAULT
will take effect.
I lost hours and hours to resolve this issue, but it's fixed by just restarting MAC...
You can use this (I didn't try this yet, but I hope this works):
if(startService(someIntent) != null) {
Toast.makeText(getBaseContext(), "Service is already running", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(getBaseContext(), "There is no service running, starting service..", Toast.LENGTH_SHORT).show();
}
The startService method returns a ComponentName object if there is an already running service. If not, null will be returned.
See public abstract ComponentName startService (Intent service).
This is not like checking I think, because it's starting the service, so you can add stopService(someIntent);
under the code.
You use std::find
from <algorithm>
, which works equally well for std::list
and std::vector
. std::vector
does not have its own search/find function.
#include <list>
#include <algorithm>
int main()
{
std::list<int> ilist;
ilist.push_back(1);
ilist.push_back(2);
ilist.push_back(3);
std::list<int>::iterator findIter = std::find(ilist.begin(), ilist.end(), 1);
}
Note that this works for built-in types like int
as well as standard library types like std::string
by default because they have operator==
provided for them. If you are using using std::find
on a container of a user-defined type, you should overload operator==
to allow std::find
to work properly: EqualityComparable
concept
insert into customer_keyskill(customerID, keySkillID)
select 2,1 from dual
where not exists (
select customerID from customer_keyskill
where customerID = 2
and keySkillID = 1 )
I still experienced the problem described above on an Asus T100 Windows 10 test device for both (up to date) Edge and Chrome browser.
Solution was in the date/time settings of the device; somehow the date was not set correctly (date in the past). Restoring this by setting the correct date (and restarting the browsers) solved the issue for me. I hope I save someone a headache debugging this problem.
In iOS10, there's a built in property for this now: timeControlStatus
For example, this function plays or pauses the avPlayer based on it's status and updates the play/pause button appropriately.
@IBAction func btnPlayPauseTap(_ sender: Any) {
if aPlayer.timeControlStatus == .playing {
aPlayer.pause()
btnPlay.setImage(UIImage(named: "control-play"), for: .normal)
} else if aPlayer.timeControlStatus == .paused {
aPlayer.play()
btnPlay.setImage(UIImage(named: "control-pause"), for: .normal)
}
}
As for your second question, to know if the avPlayer reached the end, the easiest thing to do would be to set up a notification.
NotificationCenter.default.addObserver(self, selector: #selector(self.didPlayToEnd), name: .AVPlayerItemDidPlayToEndTime, object: nil)
When it gets to the end, for example, you can have it rewind to the beginning of the video and reset the Pause button to Play.
@objc func didPlayToEnd() {
aPlayer.seek(to: CMTimeMakeWithSeconds(0, 1))
btnPlay.setImage(UIImage(named: "control-play"), for: .normal)
}
These examples are useful if you're creating your own controls, but if you use a AVPlayerViewController, then the controls come built in.
Read the file line by line and increment a counter for each line until you have read the entire file.
Git tags are just pointers to the commit. So you use them the same way as you do HEAD, branch names or commit sha hashes. You can use tags with any git command that accepts commit/revision arguments. You can try it with git rev-parse tagname
to display the commit it points to.
In your case you have at least these two alternatives:
Reset the current branch to specific tag:
git reset --hard tagname
Generate revert commit on top to get you to the state of the tag:
git revert tag
This might introduce some conflicts if you have merge commits though.
It turns out that it was shrinking and growing correctly, providing the desired behaviour all along; except that in all current browsers flexbox wasn't accounting for the vertical scrollbar! Which is why the content appears to be getting cut off.
You can see here, which is the original code I was using before I added the fixed widths, that it looks like the column isn't growing to accomodate the text:
http://jsfiddle.net/2w157dyL/1/
However if you make the content in that column wider, you'll see that it always cuts it off by the same amount, which is the width of the scrollbar.
So the fix is very, very simple - add enough right padding to account for the scrollbar:
http://jsfiddle.net/2w157dyL/2/
main > section {_x000D_
overflow-y: auto;_x000D_
padding-right: 2em;_x000D_
}
_x000D_
It was when I was trying some things suggested by Michael_B (specifically adding a padding buffer) that I discovered this, thanks so much!
Edit: I see that he also posted a fiddle which does the same thing - again, thanks so much for all your help
I'm not familiar with Git Bash but assuming that it is a git shell (such as git-sh
) residing in /path/to/my/gitshell
and your favorite terminal program is called `myterm' you can script the following:
(cd dir1; myterm -e /path/to/my/gitshell) &
(cd dir2; myterm -e /path/to/my/gitshell) &
...
Note that the parameter -e
for execution may be named differently with your favorite terminal program.
<div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div>
and for the css
@media ( min-width: 768px ) {
.navbar > .container {
text-align: center;
}
.navbar-header,.navbar-brand,.navbar .navbar-nav,.navbar .navbar-nav > li {
float: none;
display: inline-block;
}
.collapse.navbar-collapse {
width: auto;
clear: none;
}
}
see it live http://www.bootply.com/103172
Ruby has no pre/post increment/decrement operator. For instance,
x++
orx--
will fail to parse. More importantly,++x
or--x
will do nothing! In fact, they behave as multiple unary prefix operators:-x == ---x == -----x == ......
To increment a number, simply writex += 1
.
Taken from "Things That Newcomers to Ruby Should Know " (archive, mirror)
That explains it better than I ever could.
EDIT: and the reason from the language author himself (source):
- ++ and -- are NOT reserved operator in Ruby.
- C's increment/decrement operators are in fact hidden assignment. They affect variables, not objects. You cannot accomplish assignment via method. Ruby uses +=/-= operator instead.
- self cannot be a target of assignment. In addition, altering the value of integer 1 might cause severe confusion throughout the program.
Sometimes explicitly stating your table column names (especially in an insert query) may help. For example, the query:
INSERT INTO tableName(param1, param2, param3) VALUES(?, ?, ?)
may work better as opposed to:
INSERT INTO tableName VALUES(?, ?, ?)
Two suggestions:
std::deque
instead of std::vector
for better performance in your specific case and use the method std::deque::pop_front()
.&
in std::vector<ScanRule>& topPriorityRules;
You CAN use UTF-8 in the POST request, all you need is to specify the charset in your request.
You should use this request:
curl -X POST -H "Content-Type: application/x-www-form-urlencoded; charset=utf-8" --data-ascii "content=derinhält&date=asdf" http://myserverurl.com/api/v1/somemethod
Use the ? symbol (encoded as ⚲
or ⚲
), and rotate it to achieve the desired effect:
<div style="-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);">
⚲
</div>
It rotates a symbol :)
I use the below mentioned process to convert equations to markdown. This works very well for me. Its very simple!!
Let's say, I want to represent matrix multiplication equation
Get the script for your formulae from here - https://csrgxtu.github.io/2015/03/20/Writing-Mathematic-Fomulars-in-Markdown/
My example: I wanted to represent Z(i,j)=X(i,k) * Y(k, j); k=1 to n
into a summation formulae.
Referencing the website, the script needed was => Z_i_j=\sum_{k=1}^{10} X_i_k * Y_k_j
Use URL encoder - https://www.urlencoder.org/ to convert the script to a valid url
My example:
Use this website to generate the image by copy-pasting the output from Step 2 in the "eq" request parameter - http://www.sciweavers.org/tex2img.php?eq=<b><i>paste-output-here</i></b>&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=
- My example:
http://www.sciweavers.org/tex2img.php?eq=Z_i_j=\sum_{k=1}^{10}%20X_i_k%20*%20Y_k_j&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=
Reference image using markdown syntax - ![alt text](enter url here)
- Copy this in your markdown and you are good to go:
![Z(i,j)=X(i,k) * Y(k, j); k=1 to n](http://www.sciweavers.org/tex2img.php?eq=Z_i_j%3D%5Csum_%7Bi%3D1%7D%5E%7B10%7D%20X_i_k%20%2A%20Y_k_j&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=)
Watcher with the deep option didn't work for me.
Instead, I use updated() lifecycle hook which gets executed everytime the component's data changes. Just use it like you do with mounted().
mounted() {
/* to be executed when mounted */
},
updated() {
console.log(this.$route)
}
For your reference, visit the documentation.
The python libs are obsolete with this function. I've done one that works correctly:
import os
import shutil
def copydirectorykut(src, dst):
os.chdir(dst)
list=os.listdir(src)
nom= src+'.txt'
fitx= open(nom, 'w')
for item in list:
fitx.write("%s\n" % item)
fitx.close()
f = open(nom,'r')
for line in f.readlines():
if "." in line:
shutil.copy(src+'/'+line[:-1],dst+'/'+line[:-1])
else:
if not os.path.exists(dst+'/'+line[:-1]):
os.makedirs(dst+'/'+line[:-1])
copydirectorykut(src+'/'+line[:-1],dst+'/'+line[:-1])
copydirectorykut(src+'/'+line[:-1],dst+'/'+line[:-1])
f.close()
os.remove(nom)
os.chdir('..')
As written by Dave Butenhof himself:
"The biggest of all the big problems with recursive mutexes is that they encourage you to completely lose track of your locking scheme and scope. This is deadly. Evil. It's the "thread eater". You hold locks for the absolutely shortest possible time. Period. Always. If you're calling something with a lock held simply because you don't know it's held, or because you don't know whether the callee needs the mutex, then you're holding it too long. You're aiming a shotgun at your application and pulling the trigger. You presumably started using threads to get concurrency; but you've just PREVENTED concurrency."
MySQL ORDER BY Sorting alphanumeric on correct order
example:
SELECT `alphanumericCol` FROM `tableName` ORDER BY
SUBSTR(`alphanumericCol` FROM 1 FOR 1),
LPAD(lower(`alphanumericCol`), 10,0) ASC
output:
1
2
11
21
100
101
102
104
S-104A
S-105
S-107
S-111
The error is self explanatory. The path you are trying to access is not present.
string source_dir = "E:\\Debug\\VipBat\\{0}";
I'm sure that this is not the correct path. Debug
folder directly in E:
drive looks wrong to me. I guess there must be the project name folder directory present.
Second thing; what is {0}
in your string. I am sure that it is an argument placeholder because folder name cannot contains {0}
such name. So you need to use String.Format()
to replace the actual value.
string source_dir = String.Format("E:\\Debug\\VipBat\\{0}",variableName);
But first check the path existence that you are trying to access.
Let me try to state the different viable modes of passing pointers around to objects whose memory is managed by an instance of the std::unique_ptr
class template; it also applies to the the older std::auto_ptr
class template (which I believe allows all uses that unique pointer does, but for which in addition modifiable lvalues will be accepted where rvalues are expected, without having to invoke std::move
), and to some extent also to std::shared_ptr
.
As a concrete example for the discussion I will consider the following simple list type
struct node;
typedef std::unique_ptr<node> list;
struct node { int entry; list next; }
Instances of such list (which cannot be allowed to share parts with other instances or be circular) are entirely owned by whoever holds the initial list
pointer. If client code knows that the list it stores will never be empty, it may also choose to store the first node
directly rather than a list
.
No destructor for node
needs to be defined: since the destructors for its fields are automatically called, the whole list will be recursively deleted by the smart pointer destructor once the lifetime of initial pointer or node ends.
This recursive type gives the occasion to discuss some cases that are less visible in the case of a smart pointer to plain data. Also the functions themselves occasionally provide (recursively) an example of client code as well. The typedef for list
is of course biased towards unique_ptr
, but the definition could be changed to use auto_ptr
or shared_ptr
instead without much need to change to what is said below (notably concerning exception safety being assured without the need to write destructors).
If your function is not concerned with ownership, this is the preferred method: don't make it take a smart pointer at all. In this case your function does not need to worry who owns the object pointed to, or by what means that ownership is managed, so passing a raw pointer is both perfectly safe, and the most flexible form, since regardless of ownership a client can always produce a raw pointer (either by calling the get
method or from the address-of operator &
).
For instance the function to compute the length of such list, should not be give a list
argument, but a raw pointer:
size_t length(const node* p)
{ size_t l=0; for ( ; p!=nullptr; p=p->next.get()) ++l; return l; }
A client that holds a variable list head
can call this function as length(head.get())
,
while a client that has chosen instead to store a node n
representing a non-empty list can call length(&n)
.
If the pointer is guaranteed to be non null (which is not the case here since lists may be empty) one might prefer to pass a reference rather than a pointer. It might be a pointer/reference to non-const
if the function needs to update the contents of the node(s), without adding or removing any of them (the latter would involve ownership).
An interesting case that falls in the mode 0 category is making a (deep) copy of the list; while a function doing this must of course transfer ownership of the copy it creates, it is not concerned with the ownership of the list it is copying. So it could be defined as follows:
list copy(const node* p)
{ return list( p==nullptr ? nullptr : new node{p->entry,copy(p->next.get())} ); }
This code merits a close look, both for the question as to why it compiles at all (the result of the recursive call to copy
in the initialiser list binds to the rvalue reference argument in the move constructor of unique_ptr<node>
, a.k.a. list
, when initialising the next
field of the generated node
), and for the question as to why it is exception-safe (if during the recursive allocation process memory runs out and some call of new
throws std::bad_alloc
, then at that time a pointer to the partly constructed list is held anonymously in a temporary of type list
created for the initialiser list, and its destructor will clean up that partial list). By the way one should resist the temptation to replace (as I initially did) the second nullptr
by p
, which after all is known to be null at that point: one cannot construct a smart pointer from a (raw) pointer to constant, even when it is known to be null.
A function that takes a smart pointer value as argument takes possession of the object pointed to right away: the smart pointer that the caller held (whether in a named variable or an anonymous temporary) is copied into the argument value at function entrance and the caller's pointer has become null (in the case of a temporary the copy might have been elided, but in any case the caller has lost access to the pointed to object). I would like to call this mode call by cash: caller pays up front for the service called, and can have no illusions about ownership after the call. To make this clear, the language rules require the caller to wrap the argument in std::move
if the smart pointer is held in a variable (technically, if the argument is an lvalue); in this case (but not for mode 3 below) this function does what its name suggests, namely move the value from the variable to a temporary, leaving the variable null.
For cases where the called function unconditionally takes ownership of (pilfers) the pointed-to object, this mode used with std::unique_ptr
or std::auto_ptr
is a good way of passing a pointer together with its ownership, which avoids any risk of memory leaks. Nonetheless I think that there are only very few situations where mode 3 below is not to be preferred (ever so slightly) over mode 1. For this reason I shall provide no usage examples of this mode. (But see the reversed
example of mode 3 below, where it is remarked that mode 1 would do at least as well.) If the function takes more arguments than just this pointer, it may happen that there is in addition a technical reason to avoid mode 1 (with std::unique_ptr
or std::auto_ptr
): since an actual move operation takes place while passing a pointer variable p
by the expression std::move(p)
, it cannot be assumed that p
holds a useful value while evaluating the other arguments (the order of evaluation being unspecified), which could lead to subtle errors; by contrast, using mode 3 assures that no move from p
takes place before the function call, so other arguments can safely access a value through p
.
When used with std::shared_ptr
, this mode is interesting in that with a single function definition it allows the caller to choose whether to keep a sharing copy of the pointer for itself while creating a new sharing copy to be used by the function (this happens when an lvalue argument is provided; the copy constructor for shared pointers used at the call increases the reference count), or to just give the function a copy of the pointer without retaining one or touching the reference count (this happens when a rvalue argument is provided, possibly an lvalue wrapped in a call of std::move
). For instance
void f(std::shared_ptr<X> x) // call by shared cash
{ container.insert(std::move(x)); } // store shared pointer in container
void client()
{ std::shared_ptr<X> p = std::make_shared<X>(args);
f(p); // lvalue argument; store pointer in container but keep a copy
f(std::make_shared<X>(args)); // prvalue argument; fresh pointer is just stored away
f(std::move(p)); // xvalue argument; p is transferred to container and left null
}
The same could be achieved by separately defining void f(const std::shared_ptr<X>& x)
(for the lvalue case) and void f(std::shared_ptr<X>&& x)
(for the rvalue case), with function bodies differing only in that the first version invokes copy semantics (using copy construction/assignment when using x
) but the second version move semantics (writing std::move(x)
instead, as in the example code). So for shared pointers, mode 1 can be useful to avoid some code duplication.
Here the function just requires having a modifiable reference to the smart pointer, but gives no indication of what it will do with it. I would like to call this method call by card: caller ensures payment by giving a credit card number. The reference can be used to take ownership of the pointed-to object, but it does not have to. This mode requires providing a modifiable lvalue argument, corresponding to the fact that the desired effect of the function may include leaving a useful value in the argument variable. A caller with an rvalue expression that it wishes to pass to such a function would be forced to store it in a named variable to be able to make the call, since the language only provides implicit conversion to a constant lvalue reference (referring to a temporary) from an rvalue. (Unlike the opposite situation handled by std::move
, a cast from Y&&
to Y&
, with Y
the smart pointer type, is not possible; nonetheless this conversion could be obtained by a simple template function if really desired; see https://stackoverflow.com/a/24868376/1436796). For the case where the called function intends to unconditionally take ownership of the object, stealing from the argument, the obligation to provide an lvalue argument is giving the wrong signal: the variable will have no useful value after the call. Therefore mode 3, which gives identical possibilities inside our function but asks callers to provide an rvalue, should be preferred for such usage.
However there is a valid use case for mode 2, namely functions that may modify the pointer, or the object pointed to in a way that involves ownership. For instance, a function that prefixes a node to a list
provides an example of such use:
void prepend (int x, list& l) { l = list( new node{ x, std::move(l)} ); }
Clearly it would be undesirable here to force callers to use std::move
, since their smart pointer still owns a well defined and non-empty list after the call, though a different one than before.
Again it is interesting to observe what happens if the prepend
call fails for lack of free memory. Then the new
call will throw std::bad_alloc
; at this point in time, since no node
could be allocated, it is certain that the passed rvalue reference (mode 3) from std::move(l)
cannot yet have been pilfered, as that would be done to construct the next
field of the node
that failed to be allocated. So the original smart pointer l
still holds the original list when the error is thrown; that list will either be properly destroyed by the smart pointer destructor, or in case l
should survive thanks to a sufficiently early catch
clause, it will still hold the original list.
That was a constructive example; with a wink to this question one can also give the more destructive example of removing the first node containing a given value, if any:
void remove_first(int x, list& l)
{ list* p = &l;
while ((*p).get()!=nullptr and (*p)->entry!=x)
p = &(*p)->next;
if ((*p).get()!=nullptr)
(*p).reset((*p)->next.release()); // or equivalent: *p = std::move((*p)->next);
}
Again the correctness is quite subtle here. Notably, in the final statement the pointer (*p)->next
held inside the node to be removed is unlinked (by release
, which returns the pointer but makes the original null) before reset
(implicitly) destroys that node (when it destroys the old value held by p
), ensuring that one and only one node is destroyed at that time. (In the alternative form mentioned in the comment, this timing would be left to the internals of the implementation of the move-assignment operator of the std::unique_ptr
instance list
; the standard says 20.7.1.2.3;2 that this operator should act "as if by calling reset(u.release())
", whence the timing should be safe here too.)
Note that prepend
and remove_first
cannot be called by clients who store a local node
variable for an always non-empty list, and rightly so since the implementations given could not work for such cases.
This is the preferred mode to use when simply taking ownership of the pointer. I would like to call this method call by check: caller must accept relinquishing ownership, as if providing cash, by signing the check, but the actual withdrawal is postponed until the called function actually pilfers the pointer (exactly as it would when using mode 2). The "signing of the check" concretely means callers have to wrap an argument in std::move
(as in mode 1) if it is an lvalue (if it is an rvalue, the "giving up ownership" part is obvious and requires no separate code).
Note that technically mode 3 behaves exactly as mode 2, so the called function does not have to assume ownership; however I would insist that if there is any uncertainty about ownership transfer (in normal usage), mode 2 should be preferred to mode 3, so that using mode 3 is implicitly a signal to callers that they are giving up ownership. One might retort that only mode 1 argument passing really signals forced loss of ownership to callers. But if a client has any doubts about intentions of the called function, she is supposed to know the specifications of the function being called, which should remove any doubt.
It is surprisingly difficult to find a typical example involving our list
type that uses mode 3 argument passing. Moving a list b
to the end of another list a
is a typical example; however a
(which survives and holds the result of the operation) is better passed using mode 2:
void append (list& a, list&& b)
{ list* p=&a;
while ((*p).get()!=nullptr) // find end of list a
p=&(*p)->next;
*p = std::move(b); // attach b; the variable b relinquishes ownership here
}
A pure example of mode 3 argument passing is the following that takes a list (and its ownership), and returns a list containing the identical nodes in reverse order.
list reversed (list&& l) noexcept // pilfering reversal of list
{ list p(l.release()); // move list into temporary for traversal
list result(nullptr);
while (p.get()!=nullptr)
{ // permute: result --> p->next --> p --> (cycle to result)
result.swap(p->next);
result.swap(p);
}
return result;
}
This function might be called as in l = reversed(std::move(l));
to reverse the list into itself, but the reversed list can also be used differently.
Here the argument is immediately moved to a local variable for efficiency (one could have used the parameter l
directly in the place of p
, but then accessing it each time would involve an extra level of indirection); hence the difference with mode 1 argument passing is minimal. In fact using that mode, the argument could have served directly as local variable, thus avoiding that initial move; this is just an instance of the general principle that if an argument passed by reference only serves to initialise a local variable, one might just as well pass it by value instead and use the parameter as local variable.
Using mode 3 appears to be advocated by the standard, as witnessed by the fact that all provided library functions that transfer ownership of smart pointers using mode 3. A particular convincing case in point is the constructor std::shared_ptr<T>(auto_ptr<T>&& p)
. That constructor used (in std::tr1
) to take a modifiable lvalue reference (just like the auto_ptr<T>&
copy constructor), and could therefore be called with an auto_ptr<T>
lvalue p
as in std::shared_ptr<T> q(p)
, after which p
has been reset to null. Due to the change from mode 2 to 3 in argument passing, this old code must now be rewritten to std::shared_ptr<T> q(std::move(p))
and will then continue to work. I understand that the committee did not like the mode 2 here, but they had the option of changing to mode 1, by defining std::shared_ptr<T>(auto_ptr<T> p)
instead, they could have ensured that old code works without modification, because (unlike unique-pointers) auto-pointers can be silently dereferenced to a value (the pointer object itself being reset to null in the process). Apparently the committee so much preferred advocating mode 3 over mode 1, that they chose to actively break existing code rather than to use mode 1 even for an already deprecated usage.
Mode 1 is perfectly usable in many cases, and might be preferred over mode 3 in cases where assuming ownership would otherwise takes the form of moving the smart pointer to a local variable as in the reversed
example above. However, I can see two reasons to prefer mode 3 in the more general case:
It is slightly more efficient to pass a reference than to create a temporary and nix the old pointer (handling cash is somewhat laborious); in some scenarios the pointer may be passed several times unchanged to another function before it is actually pilfered. Such passing will generally require writing std::move
(unless mode 2 is used), but note that this is just a cast that does not actually do anything (in particular no dereferencing), so it has zero cost attached.
Should it be conceivable that anything throws an exception between the start of the function call and the point where it (or some contained call) actually moves the pointed-to object into another data structure (and this exception is not already caught inside the function itself), then when using mode 1, the object referred to by the smart pointer will be destroyed before a catch
clause can handle the exception (because the function parameter was destructed during stack unwinding), but not so when using mode 3. The latter gives the caller has the option to recover the data of the object in such cases (by catching the exception). Note that mode 1 here does not cause a memory leak, but may lead to an unrecoverable loss of data for the program, which might be undesirable as well.
To conclude a word about returning a smart pointer, presumably pointing to an object created for use by the caller. This is not really a case comparable with passing pointers into functions, but for completeness I would like to insist that in such cases always return by value (and don't use std::move
in the return
statement). Nobody wants to get a reference to a pointer that probably has just been nixed.
In jquery you could try this $("#select_id>option:selected").text()
For our fellow Angular users:
Within a template, Number(x)
and parseInt(x)
throws an error, and +x
has no effect. Valid casting will be x*1
or x/1
.
string[] lines = File.ReadAllLines("sample.txt"); List<string> list1 = new List<string>(); List<string> list2 = new List<string>(); foreach (var line in lines) { string[] values = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); list1.Add(values[0]); list2.Add(values[1]); }
If your input is search
, you also can use on 'search'
event. Example
<input type="search" placeholder="Search" id="searchTextBox">
.
$("#searchPostTextBox").on('search', function () {
alert("search value: "+$(this).val());
});
Happened to me with the directory utils
. I was trying to import this directory as:
from utils import somefile
utils
is already a package in python. Just change your directory name to something different and it should work just fine.
#change-avatar-file
is a file input
#change-avatar-file
is a img tag (the target of jcrop)
The "key" is FR.onloadend Event
https://developer.mozilla.org/en-US/docs/Web/API/FileReader
$('#change-avatar-file').change(function(){
var currentImg;
if ( this.files && this.files[0] ) {
var FR= new FileReader();
FR.onload = function(e) {
$('#avatar-change-img').attr( "src", e.target.result );
currentImg = e.target.result;
};
FR.readAsDataURL( this.files[0] );
FR.onloadend = function(e){
//console.log( $('#avatar-change-img').attr( "src"));
var jcrop_api;
$('#avatar-change-img').Jcrop({
bgFade: true,
bgOpacity: .2,
setSelect: [ 60, 70, 540, 330 ]
},function(){
jcrop_api = this;
});
}
}
});
An easy way to do this is to map
the variable and return each Character
as a String
:
let someText = "hello"
let array = someText.map({ String($0) }) // [String]
The output should be ["h", "e", "l", "l", "o"]
.
I agree httpclient is something of a standard - but I guess you are looking for options so...
Restlet provides a http client specially designed for interactong with Restful web services.
Example code:
Client client = new Client(Protocol.HTTP);
Request r = new Request();
r.setResourceRef("http://127.0.0.1:8182/sample");
r.setMethod(Method.GET);
r.getClientInfo().getAcceptedMediaTypes().add(new Preference<MediaType>(MediaType.TEXT_XML));
client.handle(r).getEntity().write(System.out);
See http://www.restlet.org/ for more details
useLayoutEffect
could accomplish this with an empty set of observers ([]
) if the functionality is actually similar to componentWillMount
-- it will run before the first content gets to the DOM -- though there are actually two updates but they are synchronous before drawing to the screen.
for example:
function MyComponent({ ...andItsProps }) {
useLayoutEffect(()=> {
console.log('I am about to render!');
},[]);
return (<div>some content</div>);
}
The benefit over useState
with an initializer/setter or useEffect
is though it may compute a render pass, there are no actual re-renders to the DOM that a user will notice, and it is run before the first noticable render, which is not the case for useEffect
. The downside is of course a slight delay in your first render since a check/update has to happen before painting to screen. It really does depend on your use-case, though.
I think personally, useMemo
is fine in some niche cases where you need to do something heavy -- as long as you keep in mind it is the exception vs the norm.
Yes, JavaScript variables will exist in the scope they are created.
var bannerID = 55;
<input id="EditBanner" type="button"
value="Edit Image" onclick="EditBanner(bannerID);"/>
function EditBanner(id) {
//Do something with id
}
If you use event handlers and jQuery it is simple also
$("#EditBanner").click(function() {
EditBanner(bannerID);
});
Other than using the Navigator/Proj Explorer and choosing files and doing 'Compare With'->'Each other'... I prefer opening both files in Eclipse and using 'Compare With'->'Opened Editor'->(pick the opened tab)... You can get this feature via the AnyEdit eclipse plugin located here (you can use Install Software via Eclipse->Help->Install New Software screen): http://andrei.gmxhome.de/eclipse/
Here is a list of commercial vendors that provide off-the-shelf packages for facial recognition which run on Windows:
Cybula - Information on their Facial Recognition SDK. This is a company founded by a University Professor and as such their website looks unprofessional. There's no pricing information or demo that you can download. You'll need to contact them for pricing information.
NeuroTechnology - Information on their Facial Recognition SDK. This company has both up-front pricing information as well as an actual 30 day trial of their SDK.
Pittsburgh Pattern Recognition - (Acquired by Google) Information on their Facial Tracking and Recognition SDK. The demos that they provide help you evaluate their technology but not their SDSK. You'll need to contact them for pricing information.
Sensible Vision - Information on their SDK. Their site allows you to easily get a price quote and you can also order an evaluation kit that will help you evaluate their technology.
I know the answers were correct at the time of asking the question - but since people (like me this minute) still happen to find them wondering why their WildFly 10 was behaving differently, I'd like to give an update for the current Hibernate 5.x version:
In the Hibernate 5.2 User Guide it is stated in chapter 11.2. Applying fetch strategies:
The Hibernate recommendation is to statically mark all associations lazy and to use dynamic fetching strategies for eagerness. This is unfortunately at odds with the JPA specification which defines that all one-to-one and many-to-one associations should be eagerly fetched by default. Hibernate, as a JPA provider, honors that default.
So Hibernate as well behaves like Ashish Agarwal stated above for JPA:
OneToMany: LAZY
ManyToOne: EAGER
ManyToMany: LAZY
OneToOne: EAGER
(see JPA 2.1 Spec)
I was unable to get @Factor Mystic's answer to work with POSIX regular expressions, so I wrote one that works with POSIX regular expressions and PERL regular expressions.
It should match:
IPv6 Regular Expression:
(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))
For ease of reading, the following is the above regular expression split at major OR points into separate lines:
# IPv6 RegEx
(
([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}| # 1:2:3:4:5:6:7:8
([0-9a-fA-F]{1,4}:){1,7}:| # 1:: 1:2:3:4:5:6:7::
([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}| # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}| # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8
([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}| # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8
([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}| # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8
([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}| # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8
[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})| # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8
:((:[0-9a-fA-F]{1,4}){1,7}|:)| # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::
fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}| # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index)
::(ffff(:0{1,4}){0,1}:){0,1}
((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}
(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])| # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255 (IPv4-mapped IPv6 addresses and IPv4-translated addresses)
([0-9a-fA-F]{1,4}:){1,4}:
((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}
(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]) # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)
)
# IPv4 RegEx
((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])
To make the above easier to understand, the following "pseudo" code replicates the above:
IPV4SEG = (25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])
IPV4ADDR = (IPV4SEG\.){3,3}IPV4SEG
IPV6SEG = [0-9a-fA-F]{1,4}
IPV6ADDR = (
(IPV6SEG:){7,7}IPV6SEG| # 1:2:3:4:5:6:7:8
(IPV6SEG:){1,7}:| # 1:: 1:2:3:4:5:6:7::
(IPV6SEG:){1,6}:IPV6SEG| # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
(IPV6SEG:){1,5}(:IPV6SEG){1,2}| # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8
(IPV6SEG:){1,4}(:IPV6SEG){1,3}| # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8
(IPV6SEG:){1,3}(:IPV6SEG){1,4}| # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8
(IPV6SEG:){1,2}(:IPV6SEG){1,5}| # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8
IPV6SEG:((:IPV6SEG){1,6})| # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8
:((:IPV6SEG){1,7}|:)| # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::
fe80:(:IPV6SEG){0,4}%[0-9a-zA-Z]{1,}| # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index)
::(ffff(:0{1,4}){0,1}:){0,1}IPV4ADDR| # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255 (IPv4-mapped IPv6 addresses and IPv4-translated addresses)
(IPV6SEG:){1,4}:IPV4ADDR # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)
)
I posted a script on GitHub which tests the regular expression: https://gist.github.com/syzdek/6086792
OP I'm with you man. again too, there is nothing wrong with that answer with 300+ up votes, but my opinion is:
what is wrong with putting classes into their cozy warm own files individually? I mean this will make things looks much better right? (or someone just like a 1000 line file for all the models)
so then, if the first one will be achieved, we have to import import import... import just in each of the model files like man, srsly, a model file, a .d.ts file, why there are so many *s in there? it should just be simple, tidy, and that's it. Why I need imports there? why? C# got namespaces for a reason.
And by then, you are literally using "filenames.ts" as identifiers. As identifiers... Come on its 2017 now and we still do that? Ima go back to Mars and sleep for another 1000 years.
So sadly, my answer is: nop, you cannot make the "namespace" thing functional if you do not using all those imports or using those filenames as identifiers (which I think is really silly). Another option is: put all of those dependencies into a box called filenameasidentifier.ts and use
export namespace(or module) boxInBox {} .
wrap them so they wont try to access other classes with same name when they are just simply trying to get a reference from the class sit right on top of them.
DELETE FROM on_search
WHERE search_date < UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 180 DAY))
In Java 7+ a few of the previous answers can be combined to allow retrieval of any path segment from a URI, rather than just the last segment. We can convert the URI to a java.nio.file.Path
object, to take advantage of its getName(int)
method.
Unfortunately, the static factory Paths.get(uri)
is not built to handle the http scheme, so we first need to separate the scheme from the URI's path.
URI uri = URI.create("http://base_path/some_segment/id");
Path path = Paths.get(uri.getPath());
String last = path.getFileName().toString();
String secondToLast = path.getName(path.getNameCount() - 2).toString();
To get the last segment in one line of code, simply nest the lines above.
Paths.get(URI.create("http://base_path/some_segment/id").getPath()).getFileName().toString()
To get the second-to-last segment while avoiding index numbers and the potential for off-by-one errors, use the getParent()
method.
String secondToLast = path.getParent().getFileName().toString();
Note the getParent()
method can be called repeatedly to retrieve segments in reverse order. In this example, the path only contains two segments, otherwise calling getParent().getParent()
would retrieve the third-to-last segment.
-L is the test for file exists and is also a symbolic link
If you do not want to test for the file being a symbolic link, but just test to see if it exists regardless of type (file, directory, socket etc) then use -e
So if file is really file and not just a symbolic link you can do all these tests and get an exit status whose value indicates the error condition.
if [ ! \( -e "${file}" \) ]
then
echo "%ERROR: file ${file} does not exist!" >&2
exit 1
elif [ ! \( -f "${file}" \) ]
then
echo "%ERROR: ${file} is not a file!" >&2
exit 2
elif [ ! \( -r "${file}" \) ]
then
echo "%ERROR: file ${file} is not readable!" >&2
exit 3
elif [ ! \( -s "${file}" \) ]
then
echo "%ERROR: file ${file} is empty!" >&2
exit 4
fi
I had a similar experience with Chai-Webdriver for Selenium.
I added await
to the assertion and it fixed the issue:
Example using Cucumberjs:
Then(/I see heading with the text of Tasks/, async function() {
await chai.expect('h1').dom.to.contain.text('Tasks');
});
quux00's answer only tells about comparing basic types.
If you need to compare types you defined, you shouldn't use reflect.TypeOf(xxx)
. Instead, use reflect.TypeOf(xxx).Kind()
.
There are two categories of types:
Here is a full example:
type MyFloat float64
type Vertex struct {
X, Y float64
}
type EmptyInterface interface {}
type Abser interface {
Abs() float64
}
func (v Vertex) Abs() float64 {
return math.Sqrt(v.X*v.X + v.Y*v.Y)
}
func (f MyFloat) Abs() float64 {
return math.Abs(float64(f))
}
var ia, ib Abser
ia = Vertex{1, 2}
ib = MyFloat(1)
fmt.Println(reflect.TypeOf(ia))
fmt.Println(reflect.TypeOf(ia).Kind())
fmt.Println(reflect.TypeOf(ib))
fmt.Println(reflect.TypeOf(ib).Kind())
if reflect.TypeOf(ia) != reflect.TypeOf(ib) {
fmt.Println("Not equal typeOf")
}
if reflect.TypeOf(ia).Kind() != reflect.TypeOf(ib).Kind() {
fmt.Println("Not equal kind")
}
ib = Vertex{3, 4}
if reflect.TypeOf(ia) == reflect.TypeOf(ib) {
fmt.Println("Equal typeOf")
}
if reflect.TypeOf(ia).Kind() == reflect.TypeOf(ib).Kind() {
fmt.Println("Equal kind")
}
The output would be:
main.Vertex
struct
main.MyFloat
float64
Not equal typeOf
Not equal kind
Equal typeOf
Equal kind
As you can see, reflect.TypeOf(xxx)
returns the direct types which you might want to use, while reflect.TypeOf(xxx).Kind()
returns the basic types.
Here's the conclusion. If you need to compare with basic types, use reflect.TypeOf(xxx).Kind()
; and if you need to compare with self-defined types, use reflect.TypeOf(xxx)
.
if reflect.TypeOf(ia) == reflect.TypeOf(Vertex{}) {
fmt.Println("self-defined")
} else if reflect.TypeOf(ia).Kind() == reflect.Float64 {
fmt.Println("basic types")
}
To avoid duplicate rows for some columns, use user_type_id instead of system_type_id.
SELECT
c.name 'Column Name',
t.Name 'Data type',
c.max_length 'Max Length',
c.precision ,
c.scale ,
c.is_nullable,
ISNULL(i.is_primary_key, 0) 'Primary Key'
FROM
sys.columns c
INNER JOIN
sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN
sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN
sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE
c.object_id = OBJECT_ID('YourTableName')
Just replace YourTableName
with your actual table name - works for SQL Server 2005 and up.
In case you are using schemas, replace YourTableName
by YourSchemaName.YourTableName
where YourSchemaName
is the actual schema name and YourTableName
is the actual table name.
I did clean build using below command.. Surprisingly worked.
sh gradlew clean build
Hopefully someone get help!
I had this problem and I just realized that if in the server you see the user in the menu SERVER -> USERS AND PRIVILEGES and find the user who has % as HOSTNAME, you can use it instead the root user.
That's all
For TRUE
localStorage.infiniteScrollEnabled = 1;
FOR FALSE
localStorage.removeItem("infiniteScrollEnabled")
CHECK EXISTANCE
if (localStorage[""infiniteScrollEnabled""]) {
//CODE IF ENABLED
}
I had the same problem. For me the reason was that I was using the same bridging-header for both my App and my Today Extension. My Today Extension does not include Parse, but because it was defined in the bridging-header it was trying to look for it. I created a new bridging-header for my Today Extension and the error dissapeared.
I know that due to this ugly anonymous inner class usage of TransactionTemplate
doesn't look nice, but when for some reason we want to have a test method transactional IMHO it is the most flexible option.
In some cases (it depends on the application type) the best way to use transactions in Spring tests is a turned-off @Transactional
on the test methods. Why? Because @Transactional
may leads to many false-positive tests. You may look at this sample article to find out details. In such cases TransactionTemplate
can be perfect for controlling transaction boundries when we want that control.
Try to do <a href="#" class="arrow">
instead. (Note the sharp #
character).
var x = y !== undefined ? y : 1;
Note that var x = y || 1;
would assign 1
for any case where y
is falsy (e.g. false
, 0
, ""
), which may be why it "didn't work" for you. Also, if y
is a global variable, if it's truly not defined you may run into an error unless you access it as window.y
.
As vol7ron suggests in the comments, you can also use typeof
to avoid the need to refer to global vars as window.<name>
:
var x = typeof y != "undefined" ? y : 1;
Silverlight and WPF Dashboards and gauges
Simple (but great) piece of work.
You actually had it correct in your third attempt.
<select ng-model="myselect" ng-options="o as o for o in options"></select>
See a working example here: http://plnkr.co/edit/xEERH2zDQ5mPXt9qCl6k?p=preview
The trick is that AngularJS writes the keys as numbers from 0 to n anyway, and translates back when updating the model.
As a result, the HTML will look incorrect but the model will still be set properly when choosing a value. (i.e. AngularJS will translate '0' back to 'var1')
The solution by Epokk also works, however if you're loading data asynchronously you might find it doesn't always update correctly. Using ngOptions will correctly refresh when the scope changes.
At least on Oracle they are all the same: http://www.oracledba.co.uk/tips/count_speed.htm
None of the above solutions address the generic intention of the original request. What if we don't know the id of the anchor? What if it doesn't have an id? What if it doesn't even have an href parameter (e.g. prev/next icon in a carousel)? What if we want to apply the action to multiple anchors with different models in an agnostic fashion? Here's an example that does something instead of a click, then later simulates the click (for any anchor or other tag):
var clicker = null;
$('a').click(function(e){
clicker=$(this); // capture the clicked dom object
/* ... do something ... */
e.preventDefault(); // prevent original click action
});
clicker[0].click(); // this repeats the original click. [0] is necessary.
For Mac Users: The debug.keystore
file exists in ~/.android
directory. Sometimes, due to the relative path, the above mentioned error keeps on popping up.
I encounter this problem often, and the easiest way to do this is to use the apply()
function within a mutate
command.
library(tidyverse)
df=data.frame(
x1=c(1,0,0,NA,0,1,1,NA,0,1),
x2=c(1,1,NA,1,1,0,NA,NA,0,1),
x3=c(0,1,0,1,1,0,NA,NA,0,1),
x4=c(1,0,NA,1,0,0,NA,0,0,1),
x5=c(1,1,NA,1,1,1,NA,1,0,1))
df %>%
mutate(sum = select(., x1:x5) %>% apply(1, sum, na.rm=TRUE))
Here you could use whatever you want to select the columns using the standard dplyr
tricks (e.g. starts_with()
or contains()
). By doing all the work within a single mutate
command, this action can occur anywhere within a dplyr
stream of processing steps. Finally, by using the apply()
function, you have the flexibility to use whatever summary you need, including your own purpose built summarization function.
Alternatively, if the idea of using a non-tidyverse function is unappealing, then you could gather up the columns, summarize them and finally join the result back to the original data frame.
df <- df %>% mutate( id = 1:n() ) # Need some ID column for this to work
df <- df %>%
group_by(id) %>%
gather('Key', 'value', starts_with('x')) %>%
summarise( Key.Sum = sum(value) ) %>%
left_join( df, . )
Here I used the starts_with()
function to select the columns and calculated the sum and you can do whatever you want with NA
values. The downside to this approach is that while it is pretty flexible, it doesn't really fit into a dplyr
stream of data cleaning steps.
Guessing at all the things omitted from the original question, but, assuming Python 2.x the key is to read the error messages carefully: in particular where you call 'encode' but the message says 'decode' and vice versa, but also the types of the values included in the messages.
In the first example string
is of type unicode
and you attempted to decode it which is an operation converting a byte string to unicode. Python helpfully attempted to convert the unicode value to str
using the default 'ascii' encoding but since your string contained a non-ascii character you got the error which says that Python was unable to encode a unicode value. Here's an example which shows the type of the input string:
>>> u"\xa0".decode("ascii", "ignore")
Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
u"\xa0".decode("ascii", "ignore")
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 0: ordinal not in range(128)
In the second case you do the reverse attempting to encode a byte string. Encoding is an operation that converts unicode to a byte string so Python helpfully attempts to convert your byte string to unicode first and, since you didn't give it an ascii string the default ascii decoder fails:
>>> "\xc2".encode("ascii", "ignore")
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
"\xc2".encode("ascii", "ignore")
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 0: ordinal not in range(128)
I came across the same issue while trying to create a cardview programmatically, what is strange is that looking at the doc https://developer.android.com/reference/android/support/v7/widget/CardView.html#setCardBackgroundColor%28int%29, Google guys made public the api to change the background color of a card view but weirdly i didn't succeed to have access to it in the support library, so here is what worked for me:
CardViewBuilder.java
mBaseLayout = new FrameLayout(context);
// FrameLayout Params
FrameLayout.LayoutParams baseLayoutParams = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
mBaseLayout.setLayoutParams(baseLayoutParams);
// Create the card view.
mCardview = new CardView(context);
mCardview.setCardElevation(4f);
mCardview.setRadius(8f);
mCardview.setPreventCornerOverlap(true); // The default value for that attribute is by default TRUE, but i reset it to true to make it clear for you guys
CardView.LayoutParams cardLayoutParams = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
cardLayoutParams.setMargins(12, 0, 12, 0);
mCardview.setLayoutParams(cardLayoutParams);
// Add the card view to the BaseLayout
mBaseLayout.addView(mCardview);
// Create a child view for the cardView that match it's parent size both vertically and horizontally
// Here i create a horizontal linearlayout, you can instantiate the view of your choice
mFilterContainer = new LinearLayout(context);
mFilterContainer.setOrientation(LinearLayout.HORIZONTAL);
mFilterContainer.setPadding(8, 8, 8, 8);
mFilterContainer.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT, Gravity.CENTER));
// And here is the magic to get everything working
// I create a background drawable for this view that have the required background color
// and match the rounded radius of the cardview to have it fit in.
mFilterContainer.setBackgroundResource(R.drawable.filter_container_background);
// Add the horizontal linearlayout to the cardview.
mCardview.addView(mFilterContainer);
filter_container_background.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="8dp"/>
<solid android:color="@android:color/white"/>
Doing that i succeed in keeping the cardview shadow and rounded corners.
It should be
var app = angular.module("MesaViewer", []);
This is the syntax you need to define a module and you need the array to show it has no dependencies.
You use the
angular.module("MesaViewer");
syntax when you are referencing a module you've already defined.
Hexidecimal color codes are already rgb. The format is #RRGGBB
I had a similar question and found what I think to be the correct solution with View Composers
View Composers allow you to set variables every time a certain view is called, and they can be specific views, or entire view templates. Anyway, I know it's not a direct answer to the question (and 2 years too late) but it seems like a more graceful solution than setting variables within a view with blade.
View::composer(array('AdminViewPath', 'LoginView/subview'), function($view) {
$view->with(array('bodyClass' => 'admin'));
});
This is how the JDK does it (adapted from OpenJDK 8, String.java/regionMatches):
static boolean charactersEqualIgnoringCase(char c1, char c2) {
if (c1 == c2) return true;
// If characters don't match but case may be ignored,
// try converting both characters to uppercase.
char u1 = Character.toUpperCase(c1);
char u2 = Character.toUpperCase(c2);
if (u1 == u2) return true;
// Unfortunately, conversion to uppercase does not work properly
// for the Georgian alphabet, which has strange rules about case
// conversion. So we need to make one last check before
// exiting.
return Character.toLowerCase(u1) == Character.toLowerCase(u2);
}
I suppose that works for Turkish too.
I can't get to your google docs file at the moment but there are some issues with your code that I will try to address while answering
Sub stituterangersNEW()
Dim t As Range
Dim x As Range
Dim dify As Boolean
Dim difx As Boolean
Dim time2 As Date
Dim time1 As Date
'You said time1 doesn't change, so I left it in a singe cell.
'If that is not correct, you will have to play with this some more.
time1 = Range("A6").Value
'Looping through each of our output cells.
For Each t In Range("B7:E9") 'Change these to match your real ranges.
'Looping through each departure date/time.
'(Only one row in your example. This can be adjusted if needed.)
For Each x In Range("B2:E2") 'Change these to match your real ranges.
'Check to see if our dep time corresponds to
'the matching column in our output
If t.Column = x.Column Then
'If it does, then check to see what our time value is
If x > 0 Then
time2 = x.Value
'Apply the change to the output cell.
t.Value = time1 - time2
'Exit out of this loop and move to the next output cell.
Exit For
End If
End If
'If the columns don't match, or the x value is not a time
'then we'll move to the next dep time (x)
Next x
Next t
End Sub
EDIT
I changed you worksheet to play with (see above for the new Sub). This probably does not suite your needs directly, but hopefully it will demonstrate the conept behind what I think you want to do. Please keep in mind that this code does not follow all the coding best preactices I would recommend (e.g. validating the time is actually a TIME and not some random other data type).
A B C D E
1 LOAD_NUMBER 1 2 3 4
2 DEPARTURE_TIME_DATE 11/12/2011 19:30 11/12/2011 19:30 11/12/2011 19:30 11/12/2011 20:00
4 Dry_Refrig 7585.1 0 10099.8 16700
6 1/4/2012 19:30
Using the sub I got this output:
A B C D E
7 Friday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
8 Saturday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
9 Thursday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
If what you need is the image to have the same dimensions of the div, I think this is the most elegant solution:
background-size: 100% 100%;
If not, the answer by @grc is the most appropriated one.
Source: http://www.w3schools.com/cssref/css3_pr_background-size.asp
I'm guessing Laravel can't determine the plural form of the word you used for your table name.
Just specify your table in the model as such:
class Cotizacion extends Model{
public $table = "cotizacion";
As of now GCM only works for chrome and android. similarly firefox and other browsers has their own api.
Now coming to the question how to implement push notification so that it will work for all common browsers with own back end.
2.after getting endpoint using Ajax save it along with browser name.
3.You need to create back end which has fields for title,message, icon,click URL as per your requirements. now after click on send notification, call a function say send_push(). In this write code for different browsers for example
3.1. for chrome
$headers = array(
'Authorization: key='.$api_key(your gcm key),
'Content-Type: application/json',
);
$msg = array('to'=>'register id saved to your server');
$url = 'https://android.googleapis.com/gcm/send';
$ch = curl_init();
// Set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($msg));
$result = curl_exec($ch);
3.2. for mozilla
$headers = array(
'Content-Type: application/json',
'TTL':6000
);
$url = 'https://updates.push.services.mozilla.com/wpush/v1/REGISTER_ID_TO SEND NOTIFICATION_ON';
$ch = curl_init();
// Set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec($ch);
for other browsers please google...
I have a far more simple solution, it is working for me; it is also a workaround but might be usable and you dont have to change your settings. I assume you can use value that will never be there, then you use it on your WHERE clause
DELETE FROM MyTable WHERE MyField IS_NOT_EQUAL AnyValueNoItemOnMyFieldWillEverHave
I don't like that solution either too much, that's why I am here, but it works and it seems better than what it has been answered
Request and response.
To understand the req
, try out console.log(req);
.
TEXT
and VarChar(MAX)
are Non-Unicode large Variable Length character data type, which can store maximum of 2147483647 Non-Unicode characters (i.e. maximum storage capacity is: 2GB).
As per MSDN link Microsoft is suggesting to avoid using the Text datatype and it will be removed in a future versions of Sql Server. Varchar(Max) is the suggested data type for storing the large string values instead of Text data type.
Data of a Text
type column is stored out-of-row in a separate LOB data pages. The row in the table data page will only have a 16 byte pointer to the LOB data page where the actual data is present. While Data of a Varchar(max)
type column is stored in-row if it is less than or equal to 8000 byte. If Varchar(max) column value is crossing the 8000 bytes then the Varchar(max) column value is stored in a separate LOB data pages and row will only have a 16 byte pointer to the LOB data page where the actual data is present. So In-Row
Varchar(Max) is good for searches and retrieval.
Some of the string functions, operators or the constructs which doesn’t work on the Text type column, but they do work on VarChar(Max) type column.
=
Equal to Operator on VarChar(Max) type columnGroup by clause on VarChar(Max) type column
As we know that the VarChar(Max) type column values are stored out-of-row only if the length of the value to be stored in it is greater than 8000 bytes or there is not enough space in the row, otherwise it will store it in-row. So if most of the values stored in the VarChar(Max) column are large and stored out-of-row, the data retrieval behavior will almost similar to the one that of the Text type column.
But if most of the values stored in VarChar(Max) type columns are small enough to store in-row. Then retrieval of the data where LOB columns are not included requires the more number of data pages to read as the LOB column value is stored in-row in the same data page where the non-LOB column values are stored. But if the select query includes LOB column then it requires less number of pages to read for the data retrieval compared to the Text type columns.
Conclusion
Use VarChar(MAX)
data type rather than TEXT
for good performance.
As in this answer to a similar question, there is no need to hack settings. It is much simpler to write:
print(foo.to_string())
There are several ways to go about this, it depends what your purpose is, if you just want to execute the function as well and in the same context, you can use .apply()
:
function init(){
doSomething();
}
function myFunc(){
init.apply(this, arguments);
doSomethingHereToo();
}
If you want to replace it with a newer init
, it'd look like this:
function init(){
doSomething();
}
//anytime later
var old_init = init;
init = function() {
old_init.apply(this, arguments);
doSomethingHereToo();
};
Here's another using the zip
function.
>>> a = [3, 7, 19]
>>> zip(range(len(a)), a)
[(0, 3), (1, 7), (2, 19)]
When you make the input, set it to be readonly.
<input type="text" name="datepicker" id="datepicker" readonly="readonly" />
In the VSCode launch.json you can use "env" and configure all your environment variables there:
{
"version": "0.2.0",
"configurations": [
{
"env": {
"NODE_ENV": "development",
"port":"1337"
},
...
}
]
}
Use the print function (Python 3.x) or import it (Python 2.6+):
from __future__ import print_function
print(*sys.path, sep='\n')
After trying many solutions, seems like the one that finally did the trick was to connect by IP. No longer file sockets getting deleted randomly.
Just update your MySQL client config (e.g. /usr/local/etc/my.cnf
) with:
[client]
port = 3306
host=127.0.0.1
protocol=tcp
SQLite does not have a storage class set aside for storing dates and/or times. Instead, the built-in Date And Time Functions of SQLite are capable of storing dates and times as TEXT, REAL, or INTEGER values:
TEXT as ISO8601 strings ("YYYY-MM-DD HH:MM:SS.SSS"). REAL as Julian day numbers, the number of days since noon in Greenwich on November 24, 4714 B.C. according to the proleptic Gregorian calendar. INTEGER as Unix Time, the number of seconds since 1970-01-01 00:00:00 UTC. Applications can chose to store dates and times in any of these formats and freely convert between formats using the built-in date and time functions.
Having said that, I would use INTEGER and store seconds since Unix epoch (1970-01-01 00:00:00 UTC).
You may be looking for auto-fill
:
grid-template-columns: repeat(auto-fill, 186px);
Demo: http://codepen.io/alanbuchanan/pen/wJRMox
To use up the available space more efficiently, you could use minmax
, and pass in auto
as the second argument:
grid-template-columns: repeat(auto-fill, minmax(186px, auto));
Demo: http://codepen.io/alanbuchanan/pen/jBXWLR
If you don't want the empty columns, you could use auto-fit
instead of auto-fill
.
You can use any of the following:
\b #A word break and will work for both spaces and end of lines.
(^|\s) #the | means or. () is a capturing group.
/\b(stackoverflow)\b/
Also, if you don't want to include the space in your match, you can use lookbehind/aheads.
(?<=\s|^) #to look behind the match
(stackoverflow) #the string you want. () optional
(?=\s|$) #to look ahead.
If we declare a variable as static, there will be only one copy of the variable. So, whenever different threads access that variable, there will be only one final value for the variable(since there is only one memory location allocated for the variable).
If a variable is declared as volatile, all threads will have their own copy of the variable but the value is taken from the main memory.So, the value of the variable in all the threads will be the same.
So, in both cases, the main point is that the value of the variable is same across all threads.
var yourobj={
"c":{
"a":[{"name":"cable - black","value":2},{"name":"case","value":2}]
},
"o":{
"v":[{"name":"over the ear headphones - white/purple","value":1}]
},
"l":{
"e":[{"name":"lens cleaner","value":1}]
},
"h":{
"d":[{"name":"hdmi cable","value":1},
{"name":"hdtv essentials (hdtv cable setup)","value":1},
{"name":"hd dvd \u0026 blue-ray disc lens cleaner","value":1}]
}}
my solution
var obj = [];
for(n1 in yourjson)
for(n1_1 in yourjson[n])
for(n1_2 in yourjson[n][n1_1])
obj[n1_2[name]] = n1_2[value];
Approved code
for(n1 in yourobj){
for(n1_1 in yourobj[n1]){
for(n1_2 in yourobj[n1][n1_1]){
for(n1_3 in yourobj[n1][n1_1][n1_2]){
obj[yourobj[n1][n1_1][n1_2].name]=yourobj[n1][n1_1][n1_2].value;
}
}
}
}
console.log(obj);
result
*You should use distinguish accessorizes when using [] method or dot notation
_.get(obj, 'address.street.name')
works great for JavaScript where you have no types. But for TypeScript we need the real Elvis operator!
If you have VS2013 installed and are getting this error, you may be invoking the wrong MSBuild. With VS2013, Microsoft now includes MSBuild as part of Visual Studio. See this Visual Studio blog posting for details.
In particular, note the new location of the binaries:
On 32-bit machines they can be found in: C:\Program Files\MSBuild\12.0\bin
On 64-bit machines the 32-bit tools will be under: C:\Program Files (x86)\MSBuild\12.0\bin
and the 64-bit tools under: C:\Program Files (x86)\MSBuild\12.0\bin\amd64
The MSBuild in %WINDIR%\Microsoft.NET\Framework\
doesn't seem to recognize the VS2013 (v120) platform toolset.
Look for a little clipboard icon that pops up at the end of the material you pasted. Click on this and choose "keep text only".
var input = "12342";
var output = input.Substring(0, input.Length - 1);
or
var output = input.Remove(input.Length - 1);
We found the asnwer of at techieshelp..its the htaccess thats the issue...
Consider the figure enclosed in this other question.
ebp-4
is your first local variable and, seen as a dword pointer, it is the address of a 32 bit integer that has to be cleared.
Maybe your source starts with
Object x = null;
This is my solution
var cells = Array.prototype.slice.call(document.getElementById("tableI").getElementsByTagName("td"));
for(var i in cells){
console.log("My contents is \"" + cells[i].innerHTML + "\"");
}
An earlier comment on an answer said it, but it is easy to miss among all the other answers.
When using bash:
echo this file: "$BASH_SOURCE"
echo this dir: "$(dirname "$BASH_SOURCE")"
You need to disable quoting.
cit <- read.csv("citations.CSV", quote = "",
row.names = NULL,
stringsAsFactors = FALSE)
str(cit)
## 'data.frame': 112543 obs. of 13 variables:
## $ row.names : chr "10.2307/675394" "10.2307/30007362" "10.2307/4254931" "10.2307/20537934" ...
## $ id : chr "10.2307/675394\t" "10.2307/30007362\t" "10.2307/4254931\t" "10.2307/20537934\t" ...
## $ doi : chr "Archaeological Inference and Inductive Confirmation\t" "Sound and Sense in Cath Almaine\t" "Oak Galls Preserved by the Eruption of Mount Vesuvius in A.D. 79_ and Their Probable Use\t" "The Arts Four Thousand Years Ago\t" ...
## $ title : chr "Bruce D. Smith\t" "Tomás Ó Cathasaigh\t" "Hiram G. Larew\t" "\t" ...
## $ author : chr "American Anthropologist\t" "Ériu\t" "Economic Botany\t" "The Illustrated Magazine of Art\t" ...
## $ journaltitle : chr "79\t" "54\t" "41\t" "1\t" ...
## $ volume : chr "3\t" "\t" "1\t" "3\t" ...
## $ issue : chr "1977-09-01T00:00:00Z\t" "2004-01-01T00:00:00Z\t" "1987-01-01T00:00:00Z\t" "1853-01-01T00:00:00Z\t" ...
## $ pubdate : chr "pp. 598-617\t" "pp. 41-47\t" "pp. 33-40\t" "pp. 171-172\t" ...
## $ pagerange : chr "American Anthropological Association\tWiley\t" "Royal Irish Academy\t" "New York Botanical Garden Press\tSpringer\t" "\t" ...
## $ publisher : chr "fla\t" "fla\t" "fla\t" "fla\t" ...
## $ type : logi NA NA NA NA NA NA ...
## $ reviewed.work: logi NA NA NA NA NA NA ...
I think is because of this kind of lines (check "Thorn" and "Minus")
readLines("citations.CSV")[82]
[1] "10.2307/3642839,10.2307/3642839\t,\"Thorn\" and \"Minus\" in Hieroglyphic Luvian Orthography\t,H. Craig Melchert\t,Anatolian Studies\t,38\t,\t,1988-01-01T00:00:00Z\t,pp. 29-42\t,British Institute at Ankara\t,fla\t,\t,"
You want to restrict to input fields that are of type text so use the selector input[type=text]
rather than input
(which will apply to all input fields (e.g. those of type submit as well)).
SELECT left(NAME, charindex('_', NAME) - 1)
FROM tempdb..sysobjects
WHERE NAME LIKE '#%'
AND NAME NOT LIKE '##%'
AND upper(xtype) = 'U'
AND NOT object_id('tempdb..' + NAME) IS NULL
you can remove the ## line if you want to include global temp tables.
print "%02d"%a
is the python 2 variant
python 3 uses a somewhat more verbose formatting system:
"{0:0=2d}".format(a)
The relevant doc link for python2 is: http://docs.python.org/2/library/string.html#format-specification-mini-language
For python3, it's http://docs.python.org/3/library/string.html#string-formatting
I noticed some issues with this that might be useful for someone just starting, or a somewhat inexperienced user, to know. First...
CD /D "C:\Documents and Settings\%username%\Start Menu\Programs\"
two things one is that a /D after the CD may prove to be useful in making sure the directory is changed but it's not really necessary, second, if you are going to pass this from user to user you have to add, instead of your name, the code %username%, this makes the code usable on any computer, as long as they have your setup.exe file in the same location as you do on your computer. of course making sure of that is more difficult. also...
start \\filer\repo\lab\"software"\"myapp"\setup.exe
the start code here, can be set up like that, but the correct syntax is
start "\\filter\repo\lab\software\myapp\" setup.exe
This will run: setup.exe, located in: \filter\repo\lab...etc.\
Simply remove the brackets from your original code.
PrintA(arryw);
private void PassArray(){
String[] arrayw = new String[4];
//populate array
PrintA(arrayw);
}
private void PrintA(String[] a){
//do whatever with array here
}
That is all.
Just put your globals in the file you are importing.
Your question is vague (are you always looking for the first part?), but you can get the exact output you asked for with string.Split
:
string[] substrings = a.Split(',');
b = substrings[0];
Console.WriteLine(b);
Output:
abc
You need to remove the scanner closing lines: scan.close();
It happened to me before and that was the reason.
Trying to JOIN in MongoDB would defeat the purpose of using MongoDB. You could, however, use a DBref and write your application-level code (or library) so that it automatically fetches these references for you.
Or you could alter your schema and use embedded documents.
Your final choice is to leave things exactly the way they are now and do two queries.
Incase of arrays, the base address (i.e. address of the array) is the address of the 1st element in the array. Also the array name acts as a pointer.
Consider a row of houses (each is an element in the array). To identify the row, you only need the 1st house address.You know each house is followed by the next (sequential).Getting the address of the 1st house, will also give you the address of the row.
Incase of string literals(character arrays defined at declaration), they are automatically
appended by \0
.
printf
prints using the format specifier and the address provided. Since, you use %s
it prints from the 1st address (incrementing the pointer using arithmetic) until '\0'
Although it might look out of topic nobody bothered to check the ERRORLEVEL. When I used your suggestions I tried to check for errors straight after the MSI installation. I made it fail on purpose and noticed that on the command line all works beautifully whilst in a batch file msiexec dosn't seem to set errors. Tried different things there like
Nothing works and what mostly annoys me it's the fact that it works in the command line.
You can use a basic prepend operation on each line:
ls -1 | while read line ; do echo $line ; done
Or you can pipe the output to sed for more complex operations:
ls -1 | sed 's/^\(.*\)$/echo \1/'
This problem may also happen if you have a unit test project that has a different C++ version than the project you want to test.
Example:
Solution: change the Unit Test to C++17 as well.
Open anaconda prompt and run
pip install xgboost
Here you go:
div{
display: none;
}
document.querySelector("button").addEventListener("click", function(){
document.querySelector("div").style.display = "block";
});
<div>blah blah blah</div>
<button>Show</button>
LIVE DEMO: http://jsfiddle.net/DerekL/p78Qq/
I just wanted to hop in here and correct (suggest alternative) to the previous answer....
You can actually use compact in the same way, however a lot neater for example...
return View::make('gameworlds.mygame', compact(array('fixtures', 'teams', 'selections')));
Or if you are using PHP > 5.4
return View::make('gameworlds.mygame', compact(['fixtures', 'teams', 'selections']));
This is far neater, and still allows for readability when reviewing what the application does ;)
I had this same issue when I was assessing 100+ servers, I had a script written in C# to browse the service names consist of SQL. When instances installed on the server, SQL Server adds a service for each instance with service name. It may vary for different versions like 2000 to 2008 but for sure there is a service with instance name.
I take the service name and obtain instance name from the service name. Here is the sample code used with WMI Query Result:
if (ServiceData.DisplayName == "MSSQLSERVER" || ServiceData.DisplayName == "SQL Server (MSSQLSERVER)")
{
InstanceData.Name = "DEFAULT";
InstanceData.ConnectionName = CurrentMachine.Name;
CurrentMachine.ListOfInstances.Add(InstanceData);
}
else
if (ServiceData.DisplayName.Contains("SQL Server (") == true)
{
InstanceData.Name = ServiceData.DisplayName.Substring(
ServiceData.DisplayName.IndexOf("(") + 1,
ServiceData.DisplayName.IndexOf(")") - ServiceData.DisplayName.IndexOf("(") - 1
);
InstanceData.ConnectionName = CurrentMachine.Name + "\\" + InstanceData.Name;
CurrentMachine.ListOfInstances.Add(InstanceData);
}
else
if (ServiceData.DisplayName.Contains("MSSQL$") == true)
{
InstanceData.Name = ServiceData.DisplayName.Substring(
ServiceData.DisplayName.IndexOf("$") + 1,
ServiceData.DisplayName.Length - ServiceData.DisplayName.IndexOf("$") - 1
);
InstanceData.ConnectionName = CurrentMachine.Name + "\\" + InstanceData.Name;
CurrentMachine.ListOfInstances.Add(InstanceData);
}
Use angular.copy when assigning value of object or array to another variable and that object
value should not be changed.
Without deep copy or using angular.copy, changing value of property or adding any new property update all object referencing that same object.
var app = angular.module('copyExample', []);_x000D_
app.controller('ExampleController', ['$scope',_x000D_
function($scope) {_x000D_
$scope.printToConsole = function() {_x000D_
$scope.main = {_x000D_
first: 'first',_x000D_
second: 'second'_x000D_
};_x000D_
_x000D_
$scope.child = angular.copy($scope.main);_x000D_
console.log('Main object :');_x000D_
console.log($scope.main);_x000D_
console.log('Child object with angular.copy :');_x000D_
console.log($scope.child);_x000D_
_x000D_
$scope.child.first = 'last';_x000D_
console.log('New Child object :')_x000D_
console.log($scope.child);_x000D_
console.log('Main object after child change and using angular.copy :');_x000D_
console.log($scope.main);_x000D_
console.log('Assing main object without copy and updating child');_x000D_
_x000D_
$scope.child = $scope.main;_x000D_
$scope.child.first = 'last';_x000D_
console.log('Main object after update:');_x000D_
console.log($scope.main);_x000D_
console.log('Child object after update:');_x000D_
console.log($scope.child);_x000D_
}_x000D_
}_x000D_
]);_x000D_
_x000D_
// Basic object assigning example_x000D_
_x000D_
var main = {_x000D_
first: 'first',_x000D_
second: 'second'_x000D_
};_x000D_
var one = main; // same as main_x000D_
var two = main; // same as main_x000D_
_x000D_
console.log('main :' + JSON.stringify(main)); // All object are same_x000D_
console.log('one :' + JSON.stringify(one)); // All object are same_x000D_
console.log('two :' + JSON.stringify(two)); // All object are same_x000D_
_x000D_
two = {_x000D_
three: 'three'_x000D_
}; // two changed but one and main remains same_x000D_
console.log('main :' + JSON.stringify(main)); // one and main are same_x000D_
console.log('one :' + JSON.stringify(one)); // one and main are same_x000D_
console.log('two :' + JSON.stringify(two)); // two is changed_x000D_
_x000D_
two = main; // same as main_x000D_
_x000D_
two.first = 'last'; // change value of object's property so changed value of all object property _x000D_
_x000D_
console.log('main :' + JSON.stringify(main)); // All object are same with new value_x000D_
console.log('one :' + JSON.stringify(one)); // All object are same with new value_x000D_
console.log('two :' + JSON.stringify(two)); // All object are same with new value
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>_x000D_
_x000D_
<div ng-app="copyExample" ng-controller="ExampleController">_x000D_
<button ng-click='printToConsole()'>Explain</button>_x000D_
</div>
_x000D_
We can decode json string into array using json_decode function in php
1) json_decode($json_string) // it returns object
2) json_decode($json_string,true) // it returns array
$json_string = '{
"type": "donut",
"name": "Cake",
"toppings": [
{ "id": "5002", "type": "Glazed" },
{ "id": "5006", "type": "Chocolate with Sprinkles" },
{ "id": "5004", "type": "Maple" }
]
}';
$array = json_decode($json_string,true);
echo $array['type']; //it gives donut
Use "spacer" divs to surround the div you want to center. Works best with a fluid design. Be sure to give the spacers height, or else they will not work.
<style>
div.row{width=100%;}
dvi.row div{float=left;}
#content{width=80%;}
div.spacer{width=10%; height=10px;}
</style>
<div class="row">
<div class="spacer"></div>
<div id="content">...</div>
<div class="spacer"></div>
</div>
You organized class interface such that public members begin with "my". Therefore you must use only those members. Instead of
myScoreonHole.hole = Console.ReadLine();
you should write
myScoreonHole.myhole = Console.ReadLine();
Use the mouseover()
function to trigger the click. In this way the previous click event will not harm. User can use both hover and click/touch. It will be mobile friendly.
$(".dropdown-toggle").mouseover(function(){
$(this).trigger('click');
})
If you need some advanced explanation you need read both specifications :
If you need a clear explanation of flow differences , this could be help you:
OAuth 1.0 Flow
OAuth 2.0 Flow
Please try this for get the url of root file.
First Way:
$path = get_home_path();
print "Path: ".$path;
// Return "Path: /var/www/htdocs/" or
// "Path: /var/www/htdocs/wordpress/" if it is subfolder
Second Way:
And you can also use
"ABSPATH"
this constant is define in wordpress config file.
document.getElementById('banner-contenedor').clientWidth
am assuming that you want to know how to format numbers in SSRS
Just right click
the TextBox
on which you want to apply formatting, go to its expression
.
suppose its expression is something like below
=Fields!myField.Value
then do this
=Format(Fields!myField.Value,"##.##")
or
=Format(Fields!myFields.Value,"00.00")
difference between the two is that former one would make 4 as 4 and later one would make 4 as 04.00
this should give you an idea.
also: you might have to convert your field into a numerical one. i.e.
=Format(CDbl(Fields!myFields.Value),"00.00")
so: 0 in format expression means, when no number is present, place a 0 there and # means when no number is present, leave it. Both of them works same when numbers are present ie. 45.6567 would be 45.65 for both of them:
UPDATE :
if you want to apply variable formatting on the same column based on row values i.e.
you want myField
to have no formatting when it has no decimal value but formatting with double precision when it has decimal then you can do it through logic. (though you should not be doing so)
Go to the appropriate textbox and go to its expression and do this:
=IIF((Fields!myField.Value - CInt(Fields!myField.Value)) > 0,
Format(Fields!myField.Value, "##.##"),Fields!myField.Value)
so basically you are using IIF(condition, true,false)
operator of SSRS,
ur condition is to check whether the number has decimal value, if it has, you apply the formatting and if no, you let it as it is.
this should give you an idea, how to handle variable formatting.
If you have a lot of files to review, you can use this tool: https://www.mannaz.at/codebase/utf-byte-order-mark-bom-remover/
Credits to Maurice
It help me to clean a system, with MVC in CakePhp, as i work in Linux, Windows, with different tools.. in some files my design was break.. so after checkin in Chrome with debug tool find the  error
I've been also using SmartAssembly. I found that Ezrinz .Net Reactor much better for me on .net applications. It obfuscates, support Mono, merges assemblies and it also also has a very nice licensing module to create trial version or link the licence to a particular machine (very easy to implement). Price is also very competitive and when I needed support they where fast. Eziriz
Just to be clear I'm just a custumer who likes the product and not in any way related with the company.
The best way is to simply extract the date part using the SQL DATE() Function:
SELECT *
FROM table1
WHERE DATE(column_datetime) = @p_date;
Nothing of the above was able to help me. In my scenario the issue was showing itself like this:
ll
command was slow (was taking about 3 seconds to execute)ll
command was executed instantly, but only if within 45 seconds from the previous ls command.When it came to debugging with Process Monitor it was found that before every command there was a DNS request.
So as soon as I disabled my firewall (Comodo in my case) and let the command execute the issue is gone. And it is not returning back when the firewall was switched back on. With the earliest opportunity I'll update this response with more details about what process was doing a blocking DNS request and what was the target.
BR,G
Another possible solution is to completely reset the settings. This is what fixed it for me:
Tools->Import and Export settings->Reset all settings.
We worked around this limitation by adding a simple IF statement in the stored procedure. Practically we pass an empty string whenever we want to save the default value in the DB.
CREATE DEFINER=`test`@`%` PROCEDURE `myProc`(IN myVarParam VARCHAR(40))
BEGIN
IF myVarParam = '' THEN SET myVarParam = 'default-value'; END IF;
...your code here...
END
For Apache server, you should check mod_expires for setting Expires and Cache-Control headers.
Alternatively, you can use Header directive to add Cache-Control on your own:
Header set Cache-Control "max-age=290304000, public"
I'm not familiar with either of these books, but the second is closer to current reality. The first may be discussing a specific processor.
Processors have been made with quite a variety of word sizes, not always a multiple of 8.
The 8086 and 8087 processors used 16 bit words, and it's likely this is the machine the first author was writing about.
More recent processors commonly use 32 or 64 bit words.
In the 50's and 60's there were machines with words sizes that seem quite strange to us now, such as 4, 9 and 36. Since about the 70's word size has commonly been a power of 2 and a multiple of 8.
That only means that an undefined column or parameter name was detected. The errror that DB2 gives should point what that may be:
DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=[THE_UNDEFINED_COLUMN_OR_PARAMETER_NAME], DRIVER=4.8.87
Double check your table definition. Maybe you just missed adding something.
I also tried google-ing this problem and saw this:
http://www.coderanch.com/t/515475/JDBC/databases/sql-insert-statement-giving-sqlcode
Thanks to @Birchlabs' comment, now it is tons easier with this special Mac-only DNS name available:
docker run -e DB_PORT=5432 -e DB_HOST=docker.for.mac.host.internal
From 17.12.0-cd-mac46, docker.for.mac.host.internal
should be used instead of docker.for.mac.localhost
. See release note for details.
@helmbert's answer well explains the issue. But Docker for Mac does not expose the bridge network, so I had to do this trick to workaround the limitation:
$ sudo ifconfig lo0 alias 10.200.10.1/24
Open /usr/local/var/postgres/pg_hba.conf
and add this line:
host all all 10.200.10.1/24 trust
Open /usr/local/var/postgres/postgresql.conf
and edit change listen_addresses
:
listen_addresses = '*'
Reload service and launch your container:
$ PGDATA=/usr/local/var/postgres pg_ctl reload
$ docker run -e DB_PORT=5432 -e DB_HOST=10.200.10.1 my_app
What this workaround does is basically same with @helmbert's answer, but uses an IP address that is attached to lo0
instead of docker0
network interface.
Warning! chrome.tabs.getSelected
is deprecated. Please use chrome.tabs.query
as shown in the other answers.
First, you've to set the permissions for the API in manifest.json:
"permissions": [
"tabs"
]
And to store the URL :
chrome.tabs.getSelected(null,function(tab) {
var tablink = tab.url;
});
In Python 3.x, you can use the end
argument to the print()
function to prevent a newline character from being printed:
print("Nope, that is not a two. That is a", end="")
In Python 2.x, you can use a trailing comma:
print "this should be",
print "on the same line"
You don't need this to simply print a variable, though:
print "Nope, that is not a two. That is a", x
Note that the trailing comma still results in a space being printed at the end of the line, i.e. it's equivalent to using end=" "
in Python 3. To suppress the space character as well, you can either use
from __future__ import print_function
to get access to the Python 3 print function or use sys.stdout.write()
.
You can look into UglifyJS
: http://jstarrdewar.com/blog/2013/02/28/use-uglify-to-automatically-strip-debug-messages-from-your-javascript/, https://github.com/mishoo/UglifyJS
I haven't tried it yet.
Quoting,
if (typeof DEBUG === 'undefined') DEBUG = true; // will be removed
function doSomethingCool() {
DEBUG && console.log("something cool just happened"); // will be removed }
...The log message line will be removed by Uglify's dead-code remover (since it will erase any conditional that will always evaluate to false). So will that first conditional. But when you are testing as uncompressed code, DEBUG will start out undefined, the first conditional will set it to true, and all your console.log() messages will work.
Riya,
Making the assumption that you want to split on the full stop (.), then here's an approach that would capture all occurences:
// add @ to the string to allow split over multiple lines
// (display purposes to save scroll bar appearing on SO question :))
string strBig = @"Retrieves a substring from this instance.
The substring starts at a specified character position. great";
// split the string on the fullstop, if it has a length>0
// then, trim that string to remove any undesired spaces
IEnumerable<string> subwords = strBig.Split('.')
.Where(x => x.Length > 0).Select(x => x.Trim());
// iterate around the new 'collection' to sanity check it
foreach (var subword in subwords)
{
Console.WriteLine(subword);
}
enjoy...
This also seems to do it. PS Example:
Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force
If you plan on writing any asynchronous, parallel, or distributed code, you will probably prefer map
over a list comprehension -- as most asynchronous, parallel, or distributed packages provide a map
function to overload python's map
. Then by passing the appropriate map
function to the rest of your code, you may not have to modify your original serial code to have it run in parallel (etc).
\b matches a word boundary. I think you can use ^$ for empty string.
When you start a process from a batch file, it starts as a separate process with no hint towards the batch file that started it (since this would have finished running in the meantime, things like the parent process ID won't help you).
If you know the process name, and it is unique among all running processes, you can use taskkill
, like @IVlad suggests in a comment.
If it is not unique, you might want to look into jobs. These terminate all spawned child processes when they are terminated.
import pandas as pd
dataset = pd.read_csv("data.csv")
values = list(x for x in dataset["column name"])
>>> values[0]
'item_0'
edit:
actually, you can just index the dataset like any old array.
import pandas as pd
dataset = pd.read_csv("data.csv")
first_value = dataset["column name"][0]
>>> print(first_value)
'item_0'
You should be able to use the /quiet
or /qn
options with msiexec
to perform a silent install.
MSI packages export public properties, which you can set with the PROPERTY=value
syntax on the end of the msiexec
parameters.
For example, this command installs a package with no UI and no reboot, with a log and two properties:
msiexec /i c:\path\to\package.msi /quiet /qn /norestart /log c:\path\to\install.log PROPERTY1=value1 PROPERTY2=value2
You can read the options for msiexec
by just running it with no options from Start -> Run.
If using ES6, you could use a for loop to achieve this:
for (let i = 1; i < 10; i++) {
setTimeout(function timer() {
console.log("hello world");
}, i * 3000);
}
_x000D_
It declares i
for each iteration, meaning the timeout is what it was before + 1000. This way, what is passed to setTimeout
is exactly what we want.
This is in the JQuery documentation:
http://learn.jquery.com/using-jquery-core/faq/how-do-i-test-whether-an-element-exists/
alert( $( "#notAnElement" ).length ? 'Not null' : 'Null' );
Newer versions of Groovy (1.7.2+) offer a JDK extension to more easily traverse over files in a directory, for example:
import static groovy.io.FileType.FILES
def dir = new File(".");
def files = [];
dir.traverse(type: FILES, maxDepth: 0) { files.add(it) };
See also [1] for more examples.
[1] http://mrhaki.blogspot.nl/2010/04/groovy-goodness-traversing-directory.html
The original answers to the question are good, but newer versions of mysql (MySQL 5.7.6 on) support geo queries, so you can now use built in functionality rather than doing complex queries.
You can now do something like:
select *, ST_Distance_Sphere( point ('input_longitude', 'input_latitude'),
point(longitude, latitude)) * .000621371192
as `distance_in_miles`
from `TableName`
having `distance_in_miles` <= 'input_max_distance'
order by `distance_in_miles` asc
The results are returned in meters
. So if you want in KM
simply use .001
instead of .000621371192
(which is for miles).
AFAIK you can't do that.
What I did at my place of work, is transfer the files to your home
(~
) folder (or really any folder that you have full permissions in, i.e chmod 777
or variants) via WinSCP, and then SSH to to your linux machine and sudo
from there to your destination folder.
Another solution would be to change permissions of the directories you are planning on uploading the files to, so your user (which is without sudo
privileges) could write to those dirs.
I would also read about WinSCP Remote Commands for further detail.
String loudScreaming = json.getJSONObject("LabelData").getString("slogan");
Googled "Permission denied (publickey). fatal: The remote end hung up unexpectedly", first result an exact SO dupe:
GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly which links here in the accepted answer (from the original poster, no less): http://help.github.com/linux-set-up-git/
I just found a new trick to center a box in the middle of the screen even if you don't have fixed dimensions. Let's say you would like a box 60% width / 60% height. The way to make it centered is by creating 2 boxes: a "container" box that position left: 50% top :50%, and a "text" box inside with reverse position left: -50%; top :-50%;
It works and it's cross browser compatible.
Check out the code below, you probably get a better explanation:
jQuery('.close a, .bg', '#message').on('click', function() {_x000D_
jQuery('#message').fadeOut();_x000D_
return false;_x000D_
});
_x000D_
html, body {_x000D_
min-height: 100%;_x000D_
}_x000D_
_x000D_
#message {_x000D_
height: 100%;_x000D_
left: 0;_x000D_
position: fixed;_x000D_
top: 0;_x000D_
width: 100%;_x000D_
}_x000D_
_x000D_
#message .container {_x000D_
height: 60%;_x000D_
left: 50%;_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
z-index: 10;_x000D_
width: 60%;_x000D_
}_x000D_
_x000D_
#message .container .text {_x000D_
background: #fff;_x000D_
height: 100%;_x000D_
left: -50%;_x000D_
position: absolute;_x000D_
top: -50%;_x000D_
width: 100%;_x000D_
}_x000D_
_x000D_
#message .bg {_x000D_
background: rgba(0, 0, 0, 0.5);_x000D_
height: 100%;_x000D_
left: 0;_x000D_
position: absolute;_x000D_
top: 0;_x000D_
width: 100%;_x000D_
z-index: 9;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div id="message">_x000D_
<div class="container">_x000D_
<div class="text">_x000D_
<h2>Warning</h2>_x000D_
<p>The message</p>_x000D_
<p class="close"><a href="#">Close Window</a></p>_x000D_
</div>_x000D_
</div>_x000D_
<div class="bg"></div>_x000D_
</div>
_x000D_
You could use the legend's set_visible
method:
ax.legend().set_visible(False)
draw()
This is based on a answer provided to me in response to a similar question I had some time ago here
(Thanks for that answer Jouni - I'm sorry I was unable to mark the question as answered... perhaps someone who has the authority can do so for me?)
You can using Javascript.
var CurrDate = new Date(); // Current Date
var numberOfDays = 5;
var days = CurrDate.setDate(CurrDate.getDate() + numberOfDays);
alert(days); // It will print 5 days before today
For PHP,
$date = date('Y-m-d', strtotime("-5 days")); // it shows 5 days before today.
echo $date;
Hope it will help you.
I also meet this problem in svn diff operation, it was caused by incorrect file path, you should add './'
to indicate the current file directory.
I had the same error.
My filename was jpaContext.xml
and it was placed in src/main/resources
. I specified param value="classpath:/jpaContext.xml"
.
Finally I renamed the file to applicationContext.xml
and moved it to the WEB-INF directory and changed param value to /WEB-INF/applicationContext.xml
, then it worked!
Create a function to move it:
function move_file($file, $to){
$path_parts = pathinfo($file);
$newplace = "$to/{$path_parts['basename']}";
if(rename($file, $newplace))
return $newplace;
return null;
}
List of details which helps in requesting id and queries are
For fetching Last inserted Id :This will fetching the last records from the table
$this->db->insert_id();
Fetching SQL query add this after modal request
$this->db->last_query()
Tick 'Full Index Enabled' and then 'Rebuild Index' of the central repository in 'Global Repositories' under Window > Show View > Other > Maven > Maven Repositories
, and it should work.
The rebuilding may take a long time depending on the speed of your internet connection, but eventually it works.
I discovered an error in my first post, so I decided to sit down and do the the math. What I found is that the number system used to identify Excel columns is not a base 26 system, as another person posted. Consider the following in base 10. You can also do this with the letters of the alphabet.
Space:.........................S1, S2, S3 : S1, S2, S3
....................................0, 00, 000 :.. A, AA, AAA
....................................1, 01, 001 :.. B, AB, AAB
.................................... …, …, … :.. …, …, …
....................................9, 99, 999 :.. Z, ZZ, ZZZ
Total states in space: 10, 100, 1000 : 26, 676, 17576
Total States:...............1110................18278
Excel numbers columns in the individual alphabetical spaces using base 26. You can see that in general, the state space progression is a, a^2, a^3, … for some base a, and the total number of states is a + a^2 + a^3 + … .
Suppose you want to find the total number of states A in the first N spaces. The formula for doing so is A = (a)(a^N - 1 )/(a-1). This is important because we need to find the space N that corresponds to our index K. If I want to find out where K lies in the number system I need to replace A with K and solve for N. The solution is N = log{base a} (A (a-1)/a +1). If I use the example of a = 10 and K = 192, I know that N = 2.23804… . This tells me that K lies at the beginning of the third space since it is a little greater than two.
The next step is to find exactly how far in the current space we are. To find this, subtract from K the A generated using the floor of N. In this example, the floor of N is two. So, A = (10)(10^2 – 1)/(10-1) = 110, as is expected when you combine the states of the first two spaces. This needs to be subtracted from K because these first 110 states would have already been accounted for in the first two spaces. This leaves us with 82 states. So, in this number system, the representation of 192 in base 10 is 082.
The C# code using a base index of zero is
private string ExcelColumnIndexToName(int Index)
{
string range = string.Empty;
if (Index < 0 ) return range;
int a = 26;
int x = (int)Math.Floor(Math.Log((Index) * (a - 1) / a + 1, a));
Index -= (int)(Math.Pow(a, x) - 1) * a / (a - 1);
for (int i = x+1; Index + i > 0; i--)
{
range = ((char)(65 + Index % a)).ToString() + range;
Index /= a;
}
return range;
}
//Old Post
A zero-based solution in C#.
private string ExcelColumnIndexToName(int Index)
{
string range = "";
if (Index < 0 ) return range;
for(int i=1;Index + i > 0;i=0)
{
range = ((char)(65 + Index % 26)).ToString() + range;
Index /= 26;
}
if (range.Length > 1) range = ((char)((int)range[0] - 1)).ToString() + range.Substring(1);
return range;
}
I have the same issue, and solved by change the '+' to a exact number, like compile "com.android.support:appcompat-v7:21.0.+" to compile "com.android.support:appcompat-v7:21.0.0".
This works for me. :)
if you are using jquery 1.7
$('html').off('click');
else
$('html').unbind('click');
If you don't have this ipython_notebook_config.py file, you can create one by following the readme and typing
ipython profile create
php artisan make:controller admin/CategoryController
Here admin is sub directory under app/Http/Controllers and CategoryController is controller you want to create inside directory
If you want to edit that file (or any file in generally), you can't edit it simply writing its name in terminal. You must to use a command to a text editor to do this. For example:
nano ~/.bashrc
or
gedit ~/.bashrc
And in general, for any type of file:
xdg-open ~/.bashrc
Writing only ~/.bashrc
in terminal, this will try to execute that file, but .bashrc
file is not meant to be an executable file. If you want to execute the code inside of it, you can source it like follow:
source ~/.bashrc
or simple:
. ~/.bashrc
var Hello = React.createClass({
render: function() {
return (
<div className="divClass">
<img src={this.props.url} alt={`${this.props.title}'s picture`} className="img-responsive" />
<span>Hello {this.props.name}</span>
</div>
);
}
});
You should use git pull --rebase
when
Indeed -- why not then? It's more clear, and doesn't impose a logical grouping on your commits.
Ok, I suppose it needs some clarification. In Git, as you probably know, you're encouraged to branch and merge. Your local branch, into which you pull changes, and remote branch are, actually, different branches, and git pull
is about merging them. It's reasonable, since you push not very often and usually accumulate a number of changes before they constitute a completed feature.
However, sometimes--by whatever reason--you think that it would actually be better if these two--remote and local--were one branch. Like in SVN. It is here where git pull --rebase
comes into play. You no longer merge--you actually commit on top of the remote branch. That's what it actually is about.
Whether it's dangerous or not is the question of whether you are treating local and remote branch as one inseparable thing. Sometimes it's reasonable (when your changes are small, or if you're at the beginning of a robust development, when important changes are brought in by small commits). Sometimes it's not (when you'd normally create another branch, but you were too lazy to do that). But that's a different question.
You cannot do that I'm afraid, but you can do the following in jQuery, if you don't want to add the attributes to the fields. Just place this inside your <head></head>
tag
$(document).ready(function(){
$(".inputClass").focus(function(){
$(this).blur();
});
});
If you are generating the fields in the DOM (with JS), you should do this instead:
$(document).ready(function(){
$(document).on("focus", ".inputClass", function(){
$(this).blur();
});
});
In SQLDeveloper browse Tools --> Preferences
, as shown in below image.
In the Preferences options expand Database --> select Advanced --> under "Tnsnames Directory" --> Browse the directory
where tnsnames.ora present.
Then click on Ok.
as shown in below diagram.
You have Done!
Now you can connect via the TNSnames options.
Since the topic is old, most of the answers don't work on Angular 6/7/8/9/10 and/or use other libs.
So here is a short and simple solution for Angular 6+ with RxJS.
Import the necessary stuff first:
import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subject, Subscription } from 'rxjs';
import { debounceTime, distinctUntilChanged } from 'rxjs/operators';
Initialize on ngOnInit
:
export class MyComponent implements OnInit, OnDestroy {
public notesText: string;
private notesModelChanged: Subject<string> = new Subject<string>();
private notesModelChangeSubscription: Subscription
constructor() { }
ngOnInit() {
this.notesModelChangeSubscription = this.notesModelChanged
.pipe(
debounceTime(2000),
distinctUntilChanged()
)
.subscribe(newText => {
this.notesText = newText;
console.log(newText);
});
}
ngOnDestroy() {
this.notesModelChangeSubscription.unsubscribe();
}
}
Use this way:
<input [ngModel]='notesText' (ngModelChange)='notesModelChanged.next($event)' />
P.S.: For more complex and efficient solutions you might still want to check other answers.
Another option that I think is more readable when the code (e.g., a variable) is indented and the output string should be a one-liner (no newlines):
def some_method():
long_string = """
A presumptuous long string
which looks a bit nicer
in a text editor when
written over multiple lines
""".strip('\n').replace('\n', ' ')
return long_string