I think some of the above may work but using the get_the_category function seems tricky and may give unexpected results.
I think the most direct and simple way to access the cat ID in a category page is:
$wp_query->query_vars['cat']
Cheers
If the javascript file is loaded from the admin dashboard, this javascript function will give you the root of your WordPress installation. I use this a lot when I'm building plugins that need to make ajax requests from the admin dashboard.
function getHomeUrl() {
var href = window.location.href;
var index = href.indexOf('/wp-admin');
var homeUrl = href.substring(0, index);
return homeUrl;
}
How about get_the_category?
You can then do
$category = get_the_category();
$firstCategory = $category[0]->cat_name;
Although solution to this problem is hardly coded in regeneration of your .htaccess file; indeed it din't worked for most of you specially when the site is migrated to some new server.
Let's dive into some basics.
Let's assume that for most of us, WordPress environment is running on a PHP server APACHE where this server is controlling most of our environment's initial dependencies. Meanwhile .htaccess generation is also mainly dependent on Apache configurations.
So if that been said, the contribution of .htaccess creation conflict mainly occurs when a WordPress website is migrated from a server running the WordPress environment on old version of Apache and PHP to a newer version of PHP and Apache.
Because dependencies of nrwer and older versions are different that's why the newer version of Apache2 won't allow the .htaccess directives to create a .htaccess file by default; because of which we have to manually set the WordPress website's root directory permissions from "AllowOverride None" to "AllowOverride All".
Comparatively, AllowOverride directive is used to allow the use of .htaccess within the web server to allow overriding of the Apache config on a per directory basis.
Use the following fix to change the apache2.conf directory permission settings:
I believe that the Roots starter theme has a fantastic function to get the current page title. It is very hackable, covers all bases, and can be easily used with the wp_title
hook.
/**
* Page titles
*/
function roots_title() {
if (is_home()) {
if (get_option('page_for_posts', true)) {
echo get_the_title(get_option('page_for_posts', true));
} else {
_e('Latest Posts', 'roots');
}
} elseif (is_archive()) {
$term = get_term_by('slug', get_query_var('term'), get_query_var('taxonomy'));
if ($term) {
echo $term->name;
} elseif (is_post_type_archive()) {
echo get_queried_object()->labels->name;
} elseif (is_day()) {
printf(__('Daily Archives: %s', 'roots'), get_the_date());
} elseif (is_month()) {
printf(__('Monthly Archives: %s', 'roots'), get_the_date('F Y'));
} elseif (is_year()) {
printf(__('Yearly Archives: %s', 'roots'), get_the_date('Y'));
} elseif (is_author()) {
$author = get_queried_object();
printf(__('Author Archives: %s', 'roots'), $author->display_name);
} else {
single_cat_title();
}
} elseif (is_search()) {
printf(__('Search Results for %s', 'roots'), get_search_query());
} elseif (is_404()) {
_e('Not Found', 'roots');
} else {
the_title();
}
}
Please try this, it works for any redirection on WordPress
add_filter('woocommerce_login_redirect', 'wc_login_redirect');
function wc_login_redirect( $redirect_to ) {
$redirect_to = 'PUT HERE URL OF THE PAGE';
return $redirect_to;
}
In WPF an image is typically loaded from a Stream or an Uri.
BitmapImage supports both and an Uri can even be passed as constructor argument:
var uri = new Uri("http://...");
var bitmap = new BitmapImage(uri);
If the image file is located in a local folder, you would have to use a file://
Uri. You could create such a Uri from a path like this:
var path = Path.Combine(Environment.CurrentDirectory, "Bilder", "sas.png");
var uri = new Uri(path);
If the image file is an assembly resource, the Uri must follow the the Pack Uri scheme:
var uri = new Uri("pack://application:,,,/Bilder/sas.png");
In this case the Visual Studio Build Action for sas.png
would have to be Resource
.
Once you have created a BitmapImage
and also have an Image control like in this XAML
<Image Name="image1" />
you would simply assign the BitmapImage to the Source
property of that Image control:
image1.Source = bitmap;
Note: As mentioned in the comments this answer refers to the steps needed with older versions of git. Git now has native support for moving submodules:
Since git 1.8.5,
git mv old/submod new/submod
works as expected and does all the plumbing for you. You might want to use git 1.9.3 or newer, because it includes fixes for submodule moving.
The process is similar to how you'd remove a submodule (see How do I remove a submodule?):
.gitmodules
and change the path of the submodule appropriately, and put it in the index with git add .gitmodules
.mkdir -p new/parent
).mv -vi old/parent/submodule new/parent/submodule
).git add new/parent
).git rm --cached old/parent/submodule
..git/modules/old/parent/submodule
with all its content to .git/modules/new/parent/submodule
..git/modules/new/parent/config
file, make sure that worktree item points to the new locations, so in this example it should be worktree = ../../../../../new/parent/module
. Typically there should be two more ..
than directories in the direct path in that place.Edit the file new/parent/module/.git
, make sure that the path in it points to the correct new location inside the main project .git
folder, so in this example gitdir: ../../../.git/modules/new/parent/submodule
.
git status
output looks like this for me afterwards:
# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# modified: .gitmodules
# renamed: old/parent/submodule -> new/parent/submodule
#
Finally, commit the changes.
one could also convert wchar_t --> wstring --> string --> char
wchar_t wide;
wstring wstrValue;
wstrValue[0] = wide
string strValue;
strValue.assign(wstrValue.begin(), wstrValue.end()); // convert wstring to string
char char_value = strValue[0];
Copy the contents of the PATH settings to a notepad and check if the location for the 1.4.2 comes before that of the 7. If so, remove the path to 1.4.2 in the PATH setting and save it.
After saving and applying "Environment Variables" close and reopen the cmd line. In XP the path does no get reflected in already running programs.
You've started right - now you just need to fill the each student
structure in the array:
struct student
{
public int s_id;
public String s_name, c_name, dob;
}
class Program
{
static void Main(string[] args)
{
student[] arr = new student[4];
for(int i = 0; i < 4; i++)
{
Console.WriteLine("Please enter StudentId, StudentName, CourseName, Date-Of-Birth");
arr[i].s_id = Int32.Parse(Console.ReadLine());
arr[i].s_name = Console.ReadLine();
arr[i].c_name = Console.ReadLine();
arr[i].s_dob = Console.ReadLine();
}
}
}
Now, just iterate once again and write these information to the console. I will let you do that, and I will let you try to make program to take any number of students, and not just 4.
Depending on your usage, I had success with the following:
ssh root@server "script"
This will prompt for the root password and then execute the command correctly.
The problem isn't with the shell. The problem is actually with the echo
command itself, and the lack of double quotes around the variable interpolation. You can try using echo -e
but that isn't supported on all platforms, and one of the reasons printf
is now recommended for portability.
You can also try and insert the newline directly into your shell script (if a script is what you're writing) so it looks like...
#!/bin/sh
echo "Hello
World"
#EOF
or equivalently
#!/bin/sh
string="Hello
World"
echo "$string" # note double quotes!
You can create an array of all the objects inside the dictionary and then use it as a datasource for the TableView.
NSArray *aValuesArray = [yourDict allValues];
Branching off of Mohommad's answer:
str_years = [x for x in range(24)]
#[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23]
#Or, if you're starting with ints:
int_years = [int(x) for x in str_years]
#Formatted here
form_years = ["%02d" % x for x in int_years]
print(form_years)
#['00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23']
Just use matrix
:
matrix(vec,nrow = 7,ncol = 7)
One advantage of using matrix
rather than simply altering the dimension attribute as Gavin points out, is that you can specify whether the matrix is filled by row or column using the byrow
argument in matrix
.
Here is the end-to-end workflow showing the various commands and their associated inputs and outputs. That should clarify the relationship between an image and a container.
+------------+ docker build +--------------+ docker run -dt +-----------+ docker exec -it +------+
| Dockerfile | --------------> | Image | ---------------> | Container | -----------------> | Bash |
+------------+ +--------------+ +-----------+ +------+
^
| docker pull
|
+--------------+
| Registry |
+--------------+
To list the images you could run, execute:
docker image ls
To list the containers you could execute commands on:
docker ps
In one of my apps I used :
public class ClassBlock
{
public int[] p;
public int Sum
{
get { int s = 0; Array.ForEach(p, delegate (int i) { s += i; }); return s; }
}
}
You can find the info here: http://www.php.net/manual/en/language.operators.comparison.php
It's scarce because it wasn't added until PHP4. What you have is fine though, if you know there may be a type difference then it's a much better comparison, since it's testing value and type in the comparison, not just value.
Works even if the default value is a boolean value:
var setVariable = ( (b = 0) => b )( localStorage.getItem('value') );
I've just come across this, and thought I'd add my thoughts. As others have suggested, I'd recommend manually adding IDs, but if you really want something close to what you've described, you could use this:
var objectId = (function () {
var allObjects = [];
var f = function(obj) {
if (allObjects.indexOf(obj) === -1) {
allObjects.push(obj);
}
return allObjects.indexOf(obj);
}
f.clear = function() {
allObjects = [];
};
return f;
})();
You can get any object's ID by calling objectId(obj)
. Then if you want the id to be a property of the object, you can either extend the prototype:
Object.prototype.id = function () {
return objectId(this);
}
or you can manually add an ID to each object by adding a similar function as a method.
The major caveat is that this will prevent the garbage collector from destroying objects when they drop out of scope... they will never drop out of the scope of the allObjects
array, so you might find memory leaks are an issue. If your set on using this method, you should do so for debugging purpose only. When needed, you can do objectId.clear()
to clear the allObjects
and let the GC do its job (but from that point the object ids will all be reset).
Setting spring.datasource.tomcat.testOnBorrow=true
in application.properties didn't work.
Programmatically setting like below worked without any issues.
import org.apache.tomcat.jdbc.pool.DataSource;
import org.apache.tomcat.jdbc.pool.PoolProperties;
@Bean
public DataSource dataSource() {
PoolProperties poolProperties = new PoolProperties();
poolProperties.setUrl(this.properties.getDatabase().getUrl());
poolProperties.setUsername(this.properties.getDatabase().getUsername());
poolProperties.setPassword(this.properties.getDatabase().getPassword());
//here it is
poolProperties.setTestOnBorrow(true);
poolProperties.setValidationQuery("SELECT 1");
return new DataSource(poolProperties);
}
I just want to add some more information to what @Robert Paulson answered.
Let's assume that node contains key & data. So nodes with the same key might contain different data.
(So the search must find all nodes with the same key)
- left <= cur < right
- left < cur <= right
- left <= cur <= right
- left < cur < right && cur contain sibling nodes with the same key.
- left < cur < right, such that no duplicate keys exist.
1 & 2. works fine if the tree does not have any rotation-related functions to prevent skewness.
But this form doesn't work with AVL tree or Red-Black tree, because rotation will break the principal.
And even if search() finds the node with the key, it must traverse down to the leaf node for the nodes with duplicate key.
Making time complexity for search = theta(logN)
3. will work well with any form of BST with rotation-related functions.
But the search will take O(n), ruining the purpose of using BST.
Say we have the tree as below, with 3) principal.
12
/ \
10 20
/ \ /
9 11 12
/ \
10 12
If we do search(12) on this tree, even tho we found 12 at the root, we must keep search both left & right child to seek for the duplicate key.
This takes O(n) time as I've told.
4. is my personal favorite. Let's say sibling means the node with the same key.
We can change above tree into below.
12 - 12 - 12
/ \
10 - 10 20
/ \
9 11
Now any search will take O(logN) because we don't have to traverse children for the duplicate key.
And this principal also works well with AVL or RB tree.
here the link to webreports version 12 https://www.nuget.org/packages/Microsoft.ReportViewer.WebForms.v12/12.0.0?_src=template
after the package installed
on your toolbox browse the dll reference it to bin then that's it run the visual studio
Use type = "button"
instead of "submit"
, then add an onClick
handler for it.
For example:
<input type="button" value="Increment" onClick="myVar++;" />
I'm with Chris Conway on this one (upvoted him). The problem is that you are referencing one of the telerik assemblies in your project which references another one that isn't there.
First thing: I wouldn't install ANY vendor (ie: telerik) assemblies into the GAC. Telerik's stuff is compiled down to just two assemblies anyway (telerik.web.design and telerik.web.ui). Just deploy those with the application.
Second, in each of your .proj files (like .csproj) there is going to be a <reference include..>
which points to the Telerik.Web.UI file. This normally contains a version number. Make sure the assembly you put in the bin folder matches that version.
Third, make sure ALL of your projects use the latest assembly. Also make sure they are grabbing the assembly from a local path instead of the GAC. (I really really don't like the GAC. It has caused no end of issues on some projects I've been on). We typically have an "Assemblies" folder that all projects use for external assembly references.
Fourth, visual studio automatically searches your gac everytime a web site project is loaded and retargets the assembly locations if it finds something in the gac. I can't remember if it ever does this for web application projects, but I haven't had the issue in a long time with those. This can cause similar issues during deployment.
Fifth, you can rebind version numbers for assemblies in the web.config. In the runtime/assemblybinding
section you can use something like the following which takes every telerik assembly deployed in 2008 forward and points it to a very particular version:
<dependentAssembly>
<assemblyIdentity name="Telerik.Web.UI" publicKeyToken="121fae78165ba3d4" />
<bindingRedirect oldVersion="2008.0.0.0-2020.0.0.0" newVersion="2010.02.0713.35" />
</dependentAssembly>
Try this out:
grep "Killed process" /var/log/syslog
The examples in the Python documentation show how to write Unicode CSV files: http://docs.python.org/2/library/csv.html#examples
(can't copy the code here because it's protected by copyright)
ClassNotFoundException is thrown when there is attempt to load the class by referencing it via a String. For example the parameter to in Class.forName() is a String, and this raises the potential of invalid binary names being passed to the classloader.
The ClassNotFoundException is thrown when a potentially invalid binary name is encountered; for instance, if the class name has the '/' character, you are bound to get a ClassNotFoundException. It is also thrown when the directly referenced class is not available on the classpath.
On the other hand, NoClassDefFoundError is thrown
In short, a NoClassDefFoundError is usually thrown on new() statements or method invocations that load a previously absent class (as opposed to the string-based loading of classes for ClassNotFoundException), when the classloader is unable to find or load the class definition(s).
Eventually, it is upto the ClassLoader implementation to throw an instance of ClassNotFoundException when it is unable to load a class. Most custom classloader implementations perform this since they extend the URLClassLoader. Usually classloaders do not explicitly throw a NoClassDefFoundError on any of the method implementations - this exception is usually thrown from the JVM in the HotSpot compiler, and not by the classloader itself.
Not too hard to explain... This is like typing hello worl
, hitting the left-arrow key twice, typing d
, and hitting the down-arrow key.
At least, that is how I infer your terminal is interpeting the \b
and \n
codes.
Redirect the output to a file and I bet you get something else entirely. Although you may have to look at the file's bytes to see the difference.
[edit]
To elaborate a bit, this printf
emits a sequence of bytes: hello worl^H^Hd^J
, where ^H
is ASCII character #8 and ^J
is ASCII character #10. What you see on your screen depends on how your terminal interprets those control codes.
You could also pass a dict
to the pandas.replace
method:
data.replace({
'column_name': {
'value_to_replace': 'replace_value_with_this'
}
})
This has the advantage that you can replace multiple values in multiple columns at once, like so:
data.replace({
'column_name': {
'value_to_replace': 'replace_value_with_this',
'foo': 'bar',
'spam': 'eggs'
},
'other_column_name': {
'other_value_to_replace': 'other_replace_value_with_this'
},
...
})
Sometimes there are build path errors in .project, and you need to switch to Resource view to actually see the file that is causing the error.
If you're writing code that you envisage is going to be compiled on a wide variety of platforms, with a number of different compilers, then using these flags yourself will help to ensure you don't produce code that only compiles under GCC.
I had the same problem. I followed these steps (in this exact order, this is VERY important):
This happens mainly because Angular won't build those modules in the correct order, i.e before the HTML.
e.g My code:
<mat-toolbar> <!-- 2 -->
<button mat-icon-button class="example-icon" aria-label="Example icon-button with menu icon">
<mat-icon>favorite</mat-icon> <!-- 1 -->
</button>
<span>My App</span>
<span class="example-spacer"></span>
<button mat-icon-button class="example-icon favorite-icon" aria-label="Example icon-button with heart icon">
</button>
<button mat-icon-button class="example-icon" aria-label="Example icon-button with share icon">
</button>
</mat-toolbar>
_x000D_
Ok, I couldn't resist replying to this. Let me first say I don't think it's a good idea to simulate this in C as it really is a foreign concept to C.
We can use abuse the preprocessor and local stack variables to give use a limited version of C++ try/throw/catch.
Version 1 (local scope throws)
#include <stdbool.h>
#define try bool __HadError=false;
#define catch(x) ExitJmp:if(__HadError)
#define throw(x) __HadError=true;goto ExitJmp;
Version 1 is a local throw only (can't leave the function's scope). It does rely on C99's ability to declare variables in code (it should work in C89 if the try is first thing in the function).
This function just makes a local var so it knows if there was an error and uses a goto to jump to the catch block.
For example:
#include <stdio.h>
#include <stdbool.h>
#define try bool __HadError=false;
#define catch(x) ExitJmp:if(__HadError)
#define throw(x) __HadError=true;goto ExitJmp;
int main(void)
{
try
{
printf("One\n");
throw();
printf("Two\n");
}
catch(...)
{
printf("Error\n");
}
return 0;
}
This works out to something like:
int main(void)
{
bool HadError=false;
{
printf("One\n");
HadError=true;
goto ExitJmp;
printf("Two\n");
}
ExitJmp:
if(HadError)
{
printf("Error\n");
}
return 0;
}
Version 2 (scope jumping)
#include <stdbool.h>
#include <setjmp.h>
jmp_buf *g__ActiveBuf;
#define try jmp_buf __LocalJmpBuff;jmp_buf *__OldActiveBuf=g__ActiveBuf;bool __WasThrown=false;g__ActiveBuf=&__LocalJmpBuff;if(setjmp(__LocalJmpBuff)){__WasThrown=true;}else
#define catch(x) g__ActiveBuf=__OldActiveBuf;if(__WasThrown)
#define throw(x) longjmp(*g__ActiveBuf,1);
Version 2 is a lot more complex but basically works the same way. It uses a long jump out of the current function to the try block. The try block then uses an if/else to skip the code block to the catch block which check the local variable to see if it should catch.
The example expanded again:
jmp_buf *g_ActiveBuf;
int main(void)
{
jmp_buf LocalJmpBuff;
jmp_buf *OldActiveBuf=g_ActiveBuf;
bool WasThrown=false;
g_ActiveBuf=&LocalJmpBuff;
if(setjmp(LocalJmpBuff))
{
WasThrown=true;
}
else
{
printf("One\n");
longjmp(*g_ActiveBuf,1);
printf("Two\n");
}
g_ActiveBuf=OldActiveBuf;
if(WasThrown)
{
printf("Error\n");
}
return 0;
}
This uses a global pointer so the longjmp() knows what try was last run.
We are using abusing the stack so child functions can also have a try/catch block.
Using this code has a number of down sides (but is a fun mental exercise):
^[^<>]+$
The caret in the character class ([^
) means match anything but, so this means, beginning of string, then one or more of anything except <
and >
, then the end of the string.
Almost all of the python files should live in their respective folders (C:\Python26
and C:\Python27
). Some installers (ActiveState) will also associate .py*
files and add the python path to %PATH%
with an install if you tick the "use this as the default installation" box.
You can change your password from settings screen (Ctrl + Alt + S by default) as attached screenshot. After clearing, on the firts remote operation (like pull/push, etc.) it'll ask you your credentials)
IMPORTANT: Take a copy of the file before this operation.
In C programming, static
is a reserved keyword which controls both lifetime as well as visibility. If we declare a variable as static inside a function then it will only visible throughout that function. In this usage, this static variable's lifetime will start when a function call and it will destroy after the execution of that function. you can see the following example:
#include<stdio.h>
int counterFunction()
{
static int count = 0;
count++;
return count;
}
int main()
{
printf("First Counter Output = %d\n", counterFunction());
printf("Second Counter Output = %d ", counterFunction());
return 0;
}
Above program will give us this Output:
First Counter Output = 1
Second Counter Output = 1
Because as soon as we call the function it will initialize the count = 0
. And while we execute the counterFunction
it will destroy the count variable.
Locate your mysql instance with:
which mysql
If this is correct then export with the following (else navigate to the mysql instance in your mamp folder in bin):
mysqldump -u [username] -p [password] [dbname] > filename.sql
And if you wish to zip it at the sametime:
mysqldump -u [username] -p [password] [db] | gzip > filename.sql.gz
You can then move this file between servers with:
scp [email protected]:/path_to_your_dump/filename.sql.gz your_detination_path/
(where xxx.xxx.xxx.xxx is the server IP address)
And then import it with:
gunzip filename.sql.gz | mysql -u [user] -p [password] [database]
There are a couple of topics that might provide you with an answer. You could also run some tests yourself. Doesn't see too hard to get some loops started and adding a timer to calculate the execution time ;-)
I found one good thing about using bind is that you get to know the trigger event: something like: "You clicked with event = [ButtonPress event state=Mod1 num=1 x=43 y=20]" due to the code below:
self.submit.bind('<Button-1>', self.parse)
def parse(self, trigger_event):
print("You clicked with event = {}".format(trigger_event))
Comparing the following two ways of coding a button click:
btn = Button(root, text="Click me to submit", command=(lambda: reply(ent.get())))
btn = Button(root, text="Click me to submit")
btn.bind('<Button-1>', (lambda event: reply(ent.get(), e=event)))
def reply(name, e = None):
messagebox.showinfo(title="Reply", message = "Hello {0}!\nevent = {1}".format(name, e))
The first one is using the command function which doesn't take an argument, so no event pass-in is possible. The second one is a bind function which can take an event pass-in and print something like "Hello Charles! event = [ButtonPress event state=Mod1 num=1 x=68 y=12]"
We can left click, middle click or right click a mouse which corresponds to the event number of 1, 2 and 3, respectively. Code:
btn = Button(root, text="Click me to submit")
buttonClicks = ["<Button-1>", "<Button-2>", "<Button-3>"]
for bc in buttonClicks:
btn.bind(bc, lambda e : print("Button clicked with event = {}".format(e.num)))
Output:
Button clicked with event = 1
Button clicked with event = 2
Button clicked with event = 3
use laravel new blog --5.1
make sure you must have laravel installer 1.3.4 version.
You can try this:
<div ng-app="app">
<div ng-controller="AppCtrl">
<a my-dir ng-repeat="user in users" ng-click="fxn()">{{user.name}}</a>
</div>
</div>
<script>
var app = angular.module('app', []);
function AppCtrl($scope) {
$scope.users = [{ name: 'John', id: 1 }, { name: 'anonymous' }];
$scope.fxn = function () {
alert('It works');
};
}
app.directive("myDir", function ($compile) {
return {
scope: {ngClick: '='}
};
});
</script>
has_key has been deprecated in Python 3.0. Alternatively you can use 'in'
graph={'A':['B','C'],
'B':['C','D']}
print('A' in graph)
>> True
print('E' in graph)
>> False
Just remove the .value
, like this:
function(arrayP){
for(var i = 0; i < arrayP.length; i++){
alert(arrayP[i]); //no .value here
}
}
Sure you can pass an array, but to get the element at that position, use only arrayName[index]
, the .value
would be getting the value
property off an object at that position in the array - which for things like strings, numbers, etc doesn't exist. For example, "myString".value
would also be undefined
.
I have hosted an open-source project to enable Android phone to IP camera:
http://code.google.com/p/ipcamera-for-android
Raw video data is fetched from LocalSocket, and the MDAT MOOV of MP4 was checked first before streaming. The live video is packed in FLV format, and can be played via Flash video player with a build in web server :)
The parent div (I assume the outermost div) is display: block
and will fill up all available area of its container (in this case, the body) that it can. Use a different display type -- inline-block
is probably what you are going for:
Do this in your .profile -
export JAVA_HOME=`/usr/libexec/java_home`
(backticks make sure to execute the command and place its value in JAVA_HOME)
Try this it will work...
<iframe src="Tmp.XLS" width="100%" height="500"></iframe>
But you can not save changes that you have done...It is used only for displaying purpose..
You can unhide navigationController
in viewWillDisappear
override func viewWillDisappear(animated: Bool)
{
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = false
}
Swift 3
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
I don't think desc
takes an na.rm
argument... I'm actually surprised it doesn't throw an error when you give it one. If you just want to remove NA
s, use na.omit
(base) or tidyr::drop_na
:
outcome.df %>%
na.omit() %>%
group_by(Hospital, State) %>%
arrange(desc(HeartAttackDeath)) %>%
head()
library(tidyr)
outcome.df %>%
drop_na() %>%
group_by(Hospital, State) %>%
arrange(desc(HeartAttackDeath)) %>%
head()
If you only want to remove NA
s from the HeartAttackDeath column, filter with is.na
, or use tidyr::drop_na
:
outcome.df %>%
filter(!is.na(HeartAttackDeath)) %>%
group_by(Hospital, State) %>%
arrange(desc(HeartAttackDeath)) %>%
head()
outcome.df %>%
drop_na(HeartAttackDeath) %>%
group_by(Hospital, State) %>%
arrange(desc(HeartAttackDeath)) %>%
head()
As pointed out at the dupe, complete.cases
can also be used, but it's a bit trickier to put in a chain because it takes a data frame as an argument but returns an index vector. So you could use it like this:
outcome.df %>%
filter(complete.cases(.)) %>%
group_by(Hospital, State) %>%
arrange(desc(HeartAttackDeath)) %>%
head()
Klaus solution has less overhead, on the other hand this one may be more readable
myDict = {'age': ['12'], 'address': ['34 Main Street, 212 First Avenue'],
'firstName': ['Alan', 'Mary-Ann'], 'lastName': ['Stone', 'Lee']}
def search(myDict, lookup):
for key, value in myDict.items():
for v in value:
if lookup in v:
return key
search(myDict, 'Mary')
None of the answers so far have given what seems to be the simplest solution.
$('#image_id').load(
function () {
//code here
});
The $PWD
is a good option by Matthew above. If you want find to only print files then you can also add the -type f option to search only normal files. Other options are "d" for directories only etc. So in your case it would be (if i want to search only for files with .c ext):
find $PWD -type f -name "*.c"
or if you want all files:
find $PWD -type f
Note: You can't make an alias for the above command, because $PWD gets auto-completed to your home directory when the alias is being set by bash.
$array = array(
'something' => array(1,2,3),
'somethingelse' => array(1,2,3,4)
);
$last_value = end($array);
$last_key = key($array); // 'somethingelse'
This works because PHP moves it's array pointer internally for $array
$('input[name="testing"]').val(theValue);
this will work,too
$("#CompanyList").autocomplete({
source : yourSource,
change : yourChangeHandler
})
// deprecated
//$("#CompanyList").data("autocomplete")._trigger("change")
// use this now
$("#CompanyList").data("ui-autocomplete")._trigger("change")
The CSS property display: inline-block
was designed to address this need. You can read a bit about it here: http://robertnyman.com/2010/02/24/css-display-inline-block-why-it-rocks-and-why-it-sucks/
Below is an example of its use. The key elements are that the row
element has white-space: nowrap
and the cell
elements have display: inline-block
. This example should work on most major browsers; a compatibility table is available here: http://caniuse.com/#feat=inline-block
<html>
<body>
<style>
.row {
float:left;
border: 1px solid yellow;
width: 100%;
overflow: auto;
white-space: nowrap;
}
.cell {
display: inline-block;
border: 1px solid red;
width: 200px;
height: 100px;
}
</style>
<div class="row">
<div class="cell">a</div>
<div class="cell">b</div>
<div class="cell">c</div>
</div>
</body>
</html>
In Chromium 81+, I have found the answer to be: go to chrome://extensions/, click to enable Developer Mode on the top right corner, then drag and drop your .user.js script.
Are you using Bootstrap 3? My version of the css has -15px, not -13px. In any case, I've simply done what you've down, and overwritten the style. I believe it's because the .container class has a 15px padding on the left and right, and this negative margin on the rows will pull that content back out to the edge of the container.
If the following conditions are true, then rewrite the URL:
If the requested filename is not a directory,
RewriteCond %{REQUEST_FILENAME} !-d
and if the requested filename is not a regular file that exists,
RewriteCond %{REQUEST_FILENAME} !-f
and if the requested filename is not a symbolic link,
RewriteCond %{REQUEST_FILENAME} !-l
then rewrite the URL in the following way:
Take the whole request filename and provide it as the value of a "url" query parameter to index.php. Append any query string from the original URL as further query parameters (QSA), and stop processing this .htaccess file (L).
RewriteRule ^(.+)$ index.php?url=$1 [QSA,L]
Another Example:
RewriteRule "/pages/(.+)" "/page.php?page=$1" [QSA]
With the [QSA] flag, a request for
/pages/123?one=two
will be mapped to
/page.php?page=123&one=two
In C99 you can do it using a compound literal in combination with memcpy
memcpy(myarray, (int[]) { 1, 2, 3, 4 }, sizeof myarray);
(assuming that the size of the source and the size of the target is the same).
In C89/90 you can emulate that by declaring an additional "source" array
const int SOURCE[SIZE] = { 1, 2, 3, 4 }; /* maybe `static`? */
int myArray[SIZE];
...
memcpy(myarray, SOURCE, sizeof myarray);
You can use the following command on the command prompt (cmd) on Windows:
py -3.3 -m pip install opencv-python
I made a video on how to install OpenCV Python on Windows in 1 minute here:
https://www.youtube.com/watch?v=m2-8SHk-1SM
Hope it helps!
Add the below property into the web.config file for IIS sites. This worked for me on my intranet in IE11.
<system.webServer>
<httpProtocol>
<customHeaders>
<clear />
<add name="X-UA-Compatible" value="IE=edge" />
</customHeaders>
</httpProtocol>
</system.webServer>
IIF
is not a standard SQL construct, but if it's supported by your database, you can achieve a more elegant statement producing the same result:
SELECT JobId, JobName,
COUNT(IIF (Priority=1, 1, NULL)) AS Priority1,
COUNT(IIF (Priority=2, 1, NULL)) AS Priority2,
COUNT(IIF (Priority=3, 1, NULL)) AS Priority3,
COUNT(IIF (Priority=4, 1, NULL)) AS Priority4,
COUNT(IIF (Priority=5, 1, NULL)) AS Priority5
FROM TableName
GROUP BY JobId, JobName
In PHP an array is an array; there is no primitive vs. object consideration, so there is no comparable optimization to be had.
I wasn't able to get @Alex Poole answers working. However, by trial and error, I found the following works (using SQL Developer version 3.0.04). Posting it here in case it helps others:
SET serveroutput on;
DECLARE
var InParam1 number;
var InParam2 number;
var OutParam1 varchar2(100);
var OutParam2 varchar2(100);
var OutParam3 varchar2(100);
var OutParam4 number;
BEGIN
/* Assign values to IN parameters */
InParam1 := 33;
InParam2 := 89;
/* Call procedure within package, identifying schema if necessary */
schema.package.procedure(InParam1, InParam2,
OutParam1, OutParam2, OutParam3, OutParam4);
/* Display OUT parameters */
dbms_output.put_line('OutParam1: ' || OutParam1);
dbms_output.put_line('OutParam2: ' || OutParam2);
dbms_output.put_line('OutParam3: ' || OutParam3);
dbms_output.put_line('OutParam4: ' || OutParam4);
END;
Dividing two integers will result in an integer (whole number) result.
You need to cast one number as a float, or add a decimal to one of the numbers, like a/350.0.
Assuming your dataframe is mydf:
mydf$task <- factor(mydf$task, levels = c("up", "down", "left", "right", "front", "back"))
An easy solution is x = [None]*length
, but note that it initializes all list elements to None
. If the size is really fixed, you can do x=[None,None,None,None,None]
as well. But strictly speaking, you won't get undefined elements either way because this plague doesn't exist in Python.
Try using the SQL_NO_CACHE (MySQL 5.7) option in your query. (MySQL 5.6 users click HERE )
eg.
SELECT SQL_NO_CACHE * FROM TABLE
This will stop MySQL caching the results, however be aware that other OS and disk caches may also impact performance. These are harder to get around.
How about putting all content inside link?
<li><a href="#" onClick="..." ... >Backpack <img ... /></a></li>
Seems like the most natural thing to try.
<script type="text/javascript">
window.onbeforeunload = function(evt) {
var message = 'Are you sure you want to leave?';
if (typeof evt == 'undefined') {
evt = window.event;
}
if (evt) {
evt.returnValue = message;
}
return message;
}
</script>
refer from http://www.codeprojectdownload.com
A few things happening here:
This should work:
var http = require('http')
, fs = require('fs')
, options
options = {
host: 'www.google.com'
, port: 80
, path: '/images/logos/ps_logo2.png'
}
var request = http.get(options, function(res){
var imagedata = ''
res.setEncoding('binary')
res.on('data', function(chunk){
imagedata += chunk
})
res.on('end', function(){
fs.writeFile('logo.png', imagedata, 'binary', function(err){
if (err) throw err
console.log('File saved.')
})
})
})
This should work:
SELECT *
INTO DestinationDB..MyDestinationTable
FROM SourceDB..MySourceTable
It will not copy constraints, defaults or indexes. The table created will not have a clustered index.
Alternatively you could:
INSERT INTO DestinationDB..MyDestinationTable
SELECT * FROM SourceDB..MySourceTable
If your destination table exists and is empty.
git push public :master
This would delete the remote branch named master
as Kent Fredric has pointed out.
To list remote-tracking branches:
git branch -r
To delete a remote-tracking branch:
git branch -rd public/master
Django 1.5 introduced the allowed hosts setting that is required for security reasons. A settings file created with Django 1.5 has this new section which you need to add:
# Hosts/domain names that are valid for this site; required if DEBUG is False
# See https://docs.djangoproject.com/en/1.9/ref/settings/#allowed-hosts
ALLOWED_HOSTS = []
Add your host here like ['www.beta800.net']
or ['*']
for a quick test, but don't use ['*']
for production.
According to the Apache Tomcat docs, you can change the application by creating a ROOT.xml file. See this for more info:
http://tomcat.apache.org/tomcat-6.0-doc/config/context.html
"The default web application may be defined by using a file called ROOT.xml."
%S
seems to conform to The Single Unix Specification v2 and is also part of the current (2008) POSIX specification.
Equivalent C99 conforming format specifiers would be %s
and %ls
.
Make sure that your code is returning a value of given return-type irrespective of conditional statements
This code snippet was showing the same error
int search(char arr[], int start, int end, char value)
{
int i;
for(i=start; i<=end; i++)
{
if(arr[i] == value)
return i;
}
}
This is the working code after little changes
int search(char arr[], int start, int end, char value)
{
int i;
int index=-1;
for(i=start; i<=end; i++)
{
if(arr[i] == value)
index=i;
}
return index;
}
I also faced the same issue. Just restarting my servers solved the issue.
By the way, you can use next code in you event handler:
switch(e.EventType)
{
case SerialData.Chars:
{
// means you receives something
break;
}
case SerialData.Eof:
{
// means receiving ended
break;
}
}
You can use $_SERVER['REQUEST_URI']
to get requested path. Then, you'll need to remove the parameters...
$uri_parts = explode('?', $_SERVER['REQUEST_URI'], 2);
Then, add in the hostname and protocol.
echo 'http://' . $_SERVER['HTTP_HOST'] . $uri_parts[0];
You'll have to detect protocol as well, if you mix http:
and https://
. That I leave as an exercise for you. $_SERVER['REQUEST_SCHEME']
returns the protocol.
Putting it all together:
echo $_SERVER['REQUEST_SCHEME'] .'://'. $_SERVER['HTTP_HOST'] . explode('?', $_SERVER['REQUEST_URI'], 2)[0];
...returns, for example:
http://example.com/directory/file.php
Chain selectors are not limited just to classes, you can do it for both classes and ids.
Classes
.classA.classB {
/*style here*/
}
Class & Id
.classA#idB {
/*style here*/
}
Id & Id
#idA#idB {
/*style here*/
}
All good current browsers support this except IE 6, it selects based on the last selector in the list. So ".classA.classB" will select based on just ".classB".
For your case
li.left.ui-class-selector {
/*style here*/
}
or
.left.ui-class-selector {
/*style here*/
}
If unsetting using
git config --global --unset-all https.proxy
doesn't work for you .
Then check if the environment variable http_proxy and https_proxy are set . Check using this command : -
env | grep -i proxy
If this variable is set to something , then you can just unset it using :-
https_proxy=""
This is actually on the main page of nltk.org:
>>> import nltk
>>> sentence = """At eight o'clock on Thursday morning
... Arthur didn't feel very good."""
>>> tokens = nltk.word_tokenize(sentence)
>>> tokens
['At', 'eight', "o'clock", 'on', 'Thursday', 'morning',
'Arthur', 'did', "n't", 'feel', 'very', 'good', '.']
Refer to http://api.jquery.com/on/
It says
In all browsers, the load, scroll, and error events (e.g., on an
<img>
element) do not bubble. In Internet Explorer 8 and lower, the paste and reset events do not bubble. Such events are not supported for use with delegation, but they can be used when the event handler is directly attached to the element generating the event.
If you want to do something when a new input box is added then you can simply write the code after appending it.
$('#add').click(function(){
$('body').append(x);
// Your code can be here
});
And if you want the same code execute when the first input box within the document is loaded then you can write a function and call it in both places i.e. $('#add').click
and document's ready event
If you want to copy the current dir's contents, you can run:
docker build -t <imagename:tag> -f- ./ < Dockerfile
Really liked the answer with the reduce() function. Here's another way to sort the string using accumulate().
from itertools import accumulate
s = 'mississippi'
print(tuple(accumulate(sorted(s)))[-1])
sorted(s) -> ['i', 'i', 'i', 'i', 'm', 'p', 'p', 's', 's', 's', 's']
tuple(accumulate(sorted(s)) -> ('i', 'ii', 'iii', 'iiii', 'iiiim', 'iiiimp', 'iiiimpp', 'iiiimpps', 'iiiimppss', 'iiiimppsss', 'iiiimppssss')
We are selecting the last index (-1) of the tuple
Why not Process.Start(@"c:\test");
?
I had a similar problem, and the solution that worked best for me was to include the source in the same jar as the compiled code (so a given directory in the jar would include both Foo.java
and Foo.class
). Eclipse automatically associates the source with the compiled code, and automatically provides the JavaDoc from the source. Obviously, that's only helpful if you control the artifact.
Necromancing.
If you don't have any system.web.extensions config-sections or handler/module entries in your web.config, this problem is caused because you/somebody else copied a VisualStudio-Project (2013/2015/2017) while having hidden-files unhidden.
Because of that, it will not only copy .git, but also .VS
, which contains an IIS-Express applicationhost.config file, which points to web.config files at paths that don't exist (or worse, paths that do exist, but do not have the same content)...
Solution:
Delete the applicationhost.config file in the .VS folder.
Or just delete the .VS folder altogether.
Visual Studio will re-create it.
fedorqui has a working solution but there is another way to do the same thing.
Chock if a variable is set
#!/bin/bash
amIEmpty='Hello'
# This will be true if the variable has a value
if [ $amIEmpty ]; then
echo 'No, I am not!';
fi
Or to verify that a variable is empty
#!/bin/bash
amIEmpty=''
# This will be true if the variable is empty
if [ ! $amIEmpty ]; then
echo 'Yes I am!';
fi
tldp.org has good documentation about if in bash:
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html
The thread was opened quite some time ago. I think in the meanwhile the usage of a ternary operator is the simplest option:
maybeObject ? console.log(maybeObject.id) : ""
If it's reasonable to alter the original Map
data structure to be serialized to better represent the actual value wanted to be serialized, that's probably a decent approach, which would possibly reduce the amount of Jackson configuration necessary. For example, just remove the null
key entries, if possible, before calling Jackson. That said...
To suppress serializing Map
entries with null values:
Before Jackson 2.9
you can still make use of WRITE_NULL_MAP_VALUES
, but note that it's moved to SerializationFeature
:
mapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
Since Jackson 2.9
The WRITE_NULL_MAP_VALUES
is deprecated, you can use the below equivalent:
mapper.setDefaultPropertyInclusion(
JsonInclude.Value.construct(Include.ALWAYS, Include.NON_NULL))
To suppress serializing properties with null values, you can configure the ObjectMapper
directly, or make use of the @JsonInclude
annotation:
mapper.setSerializationInclusion(Include.NON_NULL);
or:
@JsonInclude(Include.NON_NULL)
class Foo
{
public String bar;
Foo(String bar)
{
this.bar = bar;
}
}
To handle null Map
keys, some custom serialization is necessary, as best I understand.
A simple approach to serialize null
keys as empty strings (including complete examples of the two previously mentioned configurations):
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.SerializerProvider;
public class JacksonFoo
{
public static void main(String[] args) throws Exception
{
Map<String, Foo> foos = new HashMap<String, Foo>();
foos.put("foo1", new Foo("foo1"));
foos.put("foo2", new Foo(null));
foos.put("foo3", null);
foos.put(null, new Foo("foo4"));
// System.out.println(new ObjectMapper().writeValueAsString(foos));
// Exception: Null key for a Map not allowed in JSON (use a converting NullKeySerializer?)
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
mapper.setSerializationInclusion(Include.NON_NULL);
mapper.getSerializerProvider().setNullKeySerializer(new MyNullKeySerializer());
System.out.println(mapper.writeValueAsString(foos));
// output:
// {"":{"bar":"foo4"},"foo2":{},"foo1":{"bar":"foo1"}}
}
}
class MyNullKeySerializer extends JsonSerializer<Object>
{
@Override
public void serialize(Object nullKey, JsonGenerator jsonGenerator, SerializerProvider unused)
throws IOException, JsonProcessingException
{
jsonGenerator.writeFieldName("");
}
}
class Foo
{
public String bar;
Foo(String bar)
{
this.bar = bar;
}
}
To suppress serializing Map
entries with null
keys, further custom serialization processing would be necessary.
I created component based child module with specific Root Folder
That cli command below i specified,please check out
ng g c Repair/RepairHome -m Repair/repair.module
Repair is Root Folder of our child module
-m is --module
c for compount
g for generate
as @Aurand to said, tomcat is not running. you can use the
ps -ef |grep java | grep tomcat
command to ignore the ps
programs.
worked for me in the shell scripte files.
I better use the .prop to change the className and it worked perfectly:
$(#td_id).prop('className','newClass');
for this line of code you just have to change the name of newClass, and of course the id of the element, in the next exemple : idelementinyourpage
$(#idelementinyourpage).prop('className','newClass');
By the way, when you want to search which style is applied to any element, you just click F12 on your browser when your page is shown, and then select in the tab of DOM Explorer, the element you want to see. In Styles you now can see what styles are applied to your element and from which class its reading.
Code like the lines below worked for me in Gmail Web client. A non-underlined black link showed up in the email. I didn't use the nested span
tag.
<table>
<tbody>
<tr>
<td>
<a href="http://hexinpeter.com" style="text-decoration: none; color: #000000 !important;">Peter Blog</a>
</td>
</tr>
</tbody>
</table>
Note: Gmail will strip off any incorrect inline styles. E.g. code like the line below will have its inline styles all stripped off.
<a href="http://hexinpeter.com" style="font-family:; text-decoration: none; color: #000000 !important;">Peter Blog</a>
I don't believe this is a bug with browsers. All behave the same way - that is, once you stop specifying explicit heights, min-height is basically a "last step".
It appears to be exactly how the CSS 2.1 spec suggests: http://www.w3.org/TR/CSS2/visudet.html#the-height-property
The percentage is calculated with respect to the height of the generated box's containing block. If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the value computes to 'auto'.
Therefore, as the min-height
parent does not have an explicit height
property set, it defaults to auto.
There are some ways around this possibly by using display: table-cell
, or newer styles such as flexbox, if that is possible for your targeted audience's browsers. You can also subvert this in certain situations by using the top
and bottom
properties on an absolutely positioned inner element, which gives you 100% height without specifying so.
Think about protected internal
as applying two access modifier (protected
, and internal
) on the same field, property or method.
In the real world, imagine we are issuing privilege for people to visit museum:
- Everyone inside the city are allowed to visit museum (internal).
- Everyone outside of the city that their parents live here are allowed to visit museum (protected).
And we can put them together in these way:
Everyone inside the city (internal) and everyone outside of city that their parents live here (protected) are allowed to visit the museum (protected internal).
Programming world:
internal: The field is available everywhere in the assembly (project). It is like saying it is public
in its project scope (but can not being accessed outside of project scope even by those classes outside of assembly which inherit from that class). Every instance of that type can see it in that assembly (project scope).
protected: simply means that all derived classes can see it (inside or outside of assembly). For example derived classes can see the field or method inside its methods and constructors using: base.NameOfProtectedInternal
.
So, putting these two access modifier together (protected internal
), you have something that can being public inside the project, and can be seen by those which have inherited from that class inside their scope.
They can be written in the
internal protected
, and does not change the meaning, but it is convenient to write itprotected internal
.
Note that $(element).offset()
tells you the position of an element relative to the document. This works great in most circumstances, but in the case of position:fixed
you can get unexpected results.
If your document is longer than the viewport and you have scrolled vertically toward the bottom of the document, then your position:fixed
element's offset()
value will be greater than the expected value by the amount you have scrolled.
If you are looking for a value relative to the viewport (window), rather than the document on a position:fixed element, you can subtract the document's scrollTop()
value from the fixed element's offset().top
value. Example: $("#el").offset().top - $(document).scrollTop()
If the position:fixed
element's offset parent is the document, you want to read parseInt($.css('top'))
instead.
Lets assume df
is a pandas DataFrame.
Then,
df.isnull().sum(axis = 0)
This will give number of NaN values in every column.
If you need, NaN values in every row,
df.isnull().sum(axis = 1)
Fix: Cannot use the special principal ‘sa’. Microsoft SQL Server, Error: 15405
When importing a database in your SQL instance you would find yourself with Cannot use the special principal 'sa'. Microsoft SQL Server, Error: 15405 popping out when setting the sa user as the DBO of the database. To fix this, Open SQL Management Studio and Click New Query. Type:
USE mydatabase
exec sp_changedbowner 'sa', 'true'
Close the new query and after viewing the security of the sa, you will find that that sa is the DBO of the database. (14444)
Source: http://www.noelpulis.com/fix-cannot-use-the-special-principal-sa-microsoft-sql-server-error-15405/
I know of psExec tools which you can download from here
There comes a psinfo.exe from the tools package. The basic usage is in the following manner in powershell/cmd.
However you could have a lot of options with it
Usage: psinfo [[\computer[,computer[,..] | @file [-u user [-p psswd]]] [-h] [-s] [-d] [-c [-t delimiter]] [filter]
\computer Perform the command on the remote computer or computers specified. If you omit the computer name the command runs on the local system, and if you specify a wildcard (\*), the command runs on all computers in the current domain.
@file Run the command on each computer listed in the text file specified.
-u Specifies optional user name for login to remote computer.
-p Specifies optional password for user name. If you omit this you will be prompted to enter a hidden password.
-h Show list of installed hotfixes.
-s Show list of installed applications.
-d Show disk volume information.
-c Print in CSV format.
-t The default delimiter for the -c option is a comma, but can be overriden with the specified character.
filter Psinfo will only show data for the field matching the filter. e.g. "psinfo service" lists only the service pack field.
Step 1:
The object locator supposed to be used here is XPath. So derive the XPath for those two checkboxes.
String housingmoves="//label[contains(text(),'housingmoves')]/preceding-sibling::input";
String season_country_homes="//label[contains(text(),'Seaside & Country Homes')]/preceding-sibling::input";
Step 2:
Perform a click on the checkboxes
driver.findElement(By.xpath(housingmoves)).click();
driver.findElement(By.xpath(season_country_homes)).click();
Here is an illustration of your first import cycle problem.
project/controllers/account
^ \
/ \
/ \
/ \/
project/components/mux <--- project/controllers/base
As you can see with my bad ASCII chart is that you are creating an import cycle when project/components/mux
imports project/controllers/account
. Since Go does not support circular dependencies you get the import cycle not allowed
error during compile time.
I don't know if this is happening to you, but sometimes I choose the wrong directory to merge and I get this error even though all the files appear completely fine.
Example:
Merge /svn/Project/branches/some-branch/Sources to /svn/Project/trunk ---> Tree conflict
Merge /svn/Project/branches/some-branch to /svn/Project/trunk ---> OK
This might be a stupid mistake, but it's not always obvious because you think it's something more complicated.
Assuming you are running on a *nix platform, use cron
and the php
executable.
EDIT:
There are quite a number of questions asking for "running php without cron" on SO already. Here's one:
Schedule scripts without using CRON
That said, the exec() answer above sounds very promising :)
The app is stored in %LocalAppData%
in your %UserProfile%
. So the full path could be:
C:\Users\username\AppData\Local\GitHub
long
can only take string convertibles which can end in a base 10 numeral. So, the decimal is causing the harm. What you can do is, float
the value before calling the long
. If your program is on Python 2.x where int and long difference matters, and you are sure you are not using large integers, you could have just been fine with using int
to provide the key as well.
So, the answer is long(float('234.89'))
or it could just be int(float('234.89'))
if you are not using large integers. Also note that this difference does not arise in Python 3, because int is upgraded to long by default. All integers are long in python3 and call to covert is just int
If you are using a POSIX compliant OS, you could use nftw()
for file tree traversal and remove (removes files or directories). If you are in C++ and your project uses boost, it is not a bad idea to use the Boost.Filesystem as suggested by Manuel.
In the code example below I decided not to traverse symbolic links and mount points (just to avoid a grand removal:) ):
#include <stdio.h>
#include <stdlib.h>
#include <ftw.h>
static int rmFiles(const char *pathname, const struct stat *sbuf, int type, struct FTW *ftwb)
{
if(remove(pathname) < 0)
{
perror("ERROR: remove");
return -1;
}
return 0;
}
int main(int argc, char *argv[])
{
if (argc != 2)
{
fprintf(stderr,"usage: %s path\n",argv[0]);
exit(1);
}
// Delete the directory and its contents by traversing the tree in reverse order, without crossing mount boundaries and symbolic links
if (nftw(argv[1], rmFiles,10, FTW_DEPTH|FTW_MOUNT|FTW_PHYS) < 0)
{
perror("ERROR: ntfw");
exit(1);
}
return 0;
}
You can only use await
in an async
method, and Main
cannot be async
.
You'll have to use your own async
-compatible context, call Wait
on the returned Task
in the Main
method, or just ignore the returned Task
and just block on the call to Read
. Note that Wait
will wrap any exceptions in an AggregateException
.
If you want a good intro, see my async
/await
intro post.
It's a one liner actually. No need to use .Autofill
Range("M3:M" & LastRow).Formula = "=G3&"",""&L3"
You may want to take if from a diffrent side: It seems easier to have a TextView with a drawable on the background:
<TextView
android:id="@+id/text"
android:background="@drawable/rounded_rectangle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
</TextView>
Try this:
SELECT
PropertyId,
SUM(Amount) as TOTAL_COSTS
FROM
MyTable
WHERE
EndDate IS NULL
GROUP BY
PropertyId
If UAC is enabled on the computer, something like this should work:
If Not WScript.Arguments.Named.Exists("elevate") Then
CreateObject("Shell.Application").ShellExecute WScript.FullName _
, """" & WScript.ScriptFullName & """ /elevate", "", "runas", 1
WScript.Quit
End If
'actual code
for (String entry : map.keySet()) {
String value = map.get(entry);
System.out.print(entry + "" + value + " ");
// do stuff
}
bash your_script.sh 1>file.log 2>&1
1>file.log
instructs the shell to send STDOUT to the file file.log
, and 2>&1
tells it to redirect STDERR (file descriptor 2) to STDOUT (file descriptor 1).
Note: The order matters as liw.fi pointed out, 2>&1 1>file.log
doesn't work.
If you want to start at the "application root" as you describe right click on the top level Default.aspx page and choose set as start page. Hit F5 and you're done.
If you want to start at a different controller action see Mark's answer.
You can use the exif-js library in combination with the HTML5 File API: http://jsfiddle.net/xQnMd/1/.
$("input").change(function() {
var file = this.files[0]; // file
fr = new FileReader; // to read file contents
fr.onloadend = function() {
// get EXIF data
var exif = EXIF.readFromBinaryFile(new BinaryFile(this.result));
// alert a value
alert(exif.Make);
};
fr.readAsBinaryString(file); // read the file
});
StaticResource will be resolved on object construction.
DynamicResource will be evaluated and resolved every time control needs the resource.
Another solution that wasn't mentioned:
var parent = document.querySelector('.parent');
if (parent.querySelector('.child') !== null) {
// .. it's a child
}
It doesn't matter whether the element is a direct child, it will work at any depth.
Alternatively, using the .contains()
method:
var parent = document.querySelector('.parent'),
child = document.querySelector('.child');
if (parent.contains(child)) {
// .. it's a child
}
Normally i use a class for this:
public class ClassName
{
public string Col1 { get; set; }
public int Col2 { get; set; }
}
Now you can use a loop to fill a list and ToArray
if you really need an array:
ClassName[] allRecords = null;
string sql = @"SELECT col1,col2
FROM some table";
using (var command = new SqlCommand(sql, con))
{
con.Open();
using (var reader = command.ExecuteReader())
{
var list = new List<ClassName>();
while (reader.Read())
list.Add(new ClassName { Col1 = reader.GetString(0), Col2 = reader.GetInt32(1) });
allRecords = list.ToArray();
}
}
Note that i've presumed that the first column is a string
and the second an integer
. Just to demonstrate that C# is typesafe and how you use the DataReader.GetXY
methods.
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
public class Timeconversion {
private DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmm", Locale.ENGLISH); //Specify your locale
public long timeConversion(String time) {
long unixTime = 0;
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT+5:30")); //Specify your timezone
try {
unixTime = dateFormat.parse(time).getTime();
unixTime = unixTime / 1000;
} catch (ParseException e) {
e.printStackTrace();
}
return unixTime;
}
}
Put the text/value in the first cell, then copy the cell, mark the whole colum and 'paste' the copied text/value.
This works in Excel 97 - sorry no other version available on my side...
Check: http://php.net/manual/en/function.mysql-affected-rows.php
It's because Java's arrays (unlike generics) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T
is at runtime, you can't create the array.
you can use .find so in your example
var projects = [
{
value: "jquery",
label: "jQuery",
desc: "the write less, do more, JavaScript library",
icon: "jquery_32x32.png"
},
{
value: "jquery-ui",
label: "jQuery UI",
desc: "the official user interface library for jQuery",
icon: "jqueryui_32x32.png"
},
{
value: "sizzlejs",
label: "Sizzle JS",
desc: "a pure-JavaScript CSS selector engine",
icon: "sizzlejs_32x32.png"
}
];
let project = projects.find((p) => {
return p.value === 'jquery-ui';
});
project.desc = 'your value'
Reloading existing classes with existing data is likely to break things.
You can load new code into new class loaders relatively easily:
ClassLoader loader = URLClassLoader.newInstance(
new URL[] { yourURL },
getClass().getClassLoader()
);
Class<?> clazz = Class.forName("mypackage.MyClass", true, loader);
Class<? extends Runnable> runClass = clazz.asSubclass(Runnable.class);
// Avoid Class.newInstance, for it is evil.
Constructor<? extends Runnable> ctor = runClass.getConstructor();
Runnable doRun = ctor.newInstance();
doRun.run();
Class loaders no longer used can be garbage collected (unless there is a memory leak, as is often the case with using ThreadLocal, JDBC drivers, java.beans
, etc).
If you want to keep the object data, then I suggest a persistence mechanism such as Serialisation, or whatever you are used to.
Of course debugging systems can do fancier things, but are more hacky and less reliable.
It is possible to add new classes into a class loader. For instance, using URLClassLoader.addURL
. However, if a class fails to load (because, say, you haven't added it), then it will never load in that class loader instance.
None of the above answers worked for me. And since there is no accepted answer, I found the following extended my image from horizontal edge to horizontal edge:
Container ( width: MediaQuery
.of(context)
.size
.width,
child:
Image.network(my_image_name, fit: BoxFit.fitWidth )
)
None of these answers seem to be quite right. I tried them all. Here are my results.
Sending query: SELECT count(*) FROM daximation
91
Sending query: SELECT Auto_increment FROM information_schema.tables WHERE table_name='daximation'
96
Sending query: SHOW TABLE STATUS LIKE 'daximation'
98
Sending query: SELECT id FROM daximation ORDER BY id DESC LIMIT 1
97
here's the screenshot: https://www.screencast.com/t/s8c3trYU
Here is my PHP code:
$query = "SELECT count(*) FROM daximation";
$result = sendquery($query);
$row = mysqli_fetch_row($result);
debugprint( $row[0]);
$query = "SELECT Auto_increment FROM information_schema.tables WHERE table_name='daximation'";
$result = sendquery($query);
$row = mysqli_fetch_row($result);
debugprint( $row[0]);
$query = "SHOW TABLE STATUS LIKE 'daximation'";
$result = sendquery($query);
$row = mysqli_fetch_row($result);
debugprint( $row[10]);
$query = "SELECT id FROM daximation ORDER BY id DESC LIMIT 1";
$result = sendquery($query);
$row = mysqli_fetch_row($result);
debugprint( $row[0]);
Well you can simply use this piece of code in your scss file; This will remove that unwanted color change,
a:-webkit-any-link {
&:hover {
color: white;
}
}
passing the xml content as string.
table1
ID int
XML CLOB
import oracle.jdbc.OraclePreparedStatement;
/*
Your Code
*/
void insert(int id, String xml){
try {
String sql = "INSERT INTO table1(ID,XML) VALUES ("
+ id
+ "', ? )";
PreparedStatement ps = conn.prepareStatement(sql);
((OraclePreparedStatement) ps).setStringForClob(1, xml);
ps.execute();
result = true;
} catch (Exception e) {
e.printStackTrace();
}
}
This can be solved by the following step:
Please ensure "Windows Hypervisor Platform" is installed. If it's not installed, install it, restart your computer and you will be good to go.
Yes, that will work as you expect it to. Unfortunately, I seem to be having trouble to find an explicit statement of this in the MySQL manual.
Foreign keys mean the value must exist in the other table. NULL refers to the absence of value, so when you set a column to NULL, it wouldn't make sense to try to enforce constraints on that.
This works as well for me
string path = TextFile + ".txt";
if (!File.Exists(HttpContext.Current.Server.MapPath(path)))
{
File.Create(HttpContext.Current.Server.MapPath(path)).Close();
}
using (StreamWriter w = File.AppendText(HttpContext.Current.Server.MapPath(path)))
{
w.WriteLine("{0}", "Hello World");
w.Flush();
w.Close();
}
If you invoke addRecipient
multiple times it will add the given recipient to the list of recipients of the given time (TO, CC, BCC)
For example:
message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected]"));
message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected]"));
message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected]"));
Will add the 3 addresses to CC
If you wish to add all addresses at once you should use setRecipients
or addRecipients
and provide it with an array of addresses
Address[] cc = new Address[] {InternetAddress.parse("[email protected]"),
InternetAddress.parse("[email protected]"),
InternetAddress.parse("[email protected]")};
message.addRecipients(Message.RecipientType.CC, cc);
You can also use InternetAddress.parse
to parse a list of addresses
message.addRecipients(Message.RecipientType.CC,
InternetAddress.parse("[email protected],[email protected],[email protected]"));
Yet another way to use Rscript for *Unix systems is Process Substitution.
Rscript <(zcat a.r)
# [1] "hello"
Which obviously does the same as the accepted answer, but this allows you to manipulate and run your file without saving it the power of the command line, e.g.:
Rscript <(sed s/hello/bye/ a.r)
# [1] "bye"
Similar to Rscript -e "Rcode"
it also allows to run without saving into a file. So it could be used in conjunction with scripts that generate R-code, e.g.:
Rscript <(echo "head(iris,2)")
# Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1 5.1 3.5 1.4 0.2 setosa
# 2 4.9 3.0 1.4 0.2 setosa
If you are using Anaconda on windows then you can open Anaconda Navigator app and go to Environment section and search for pillow in installed libraries and mark it for upgrade to latest version by right clicking on the checkbox.
This has fixed the following error:
PermissionError: [WinError 5] Access is denied: 'e:\\work\\anaconda\\lib\\site-packages\\pil\\_imaging.cp36-win_amd64.pyd'
I ended in this stackoverflow question after looking for help to solve my problem but found no solution to it :(
So I had to improvise... after some time I managed to reach the regex I needed:
As you can see, I needed up to one folder ahead of "grp-bps" folder, without including last dash. And it was required to have at least one folder after "grp-bps" folder.
Edit
Text version for copy-paste (change 'grp-bps' for your text):
.*\/grp-bps\/[^\/]+
In addition to Ishan's answer, if you want to draw programatically without user interaction, you can edit the class just a little like this.
public class DrawingCanvas extends View {
private Paint mPaint;
private Path mPath;
private boolean isUserInteractionEnabled = false;
public DrawingCanvas(Context context, AttributeSet attrs) {
super(context, attrs);
mPaint = new Paint();
mPaint.setColor(Color.RED);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(10);
mPath = new Path();
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawPath(mPath, mPaint);
super.onDraw(canvas);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (isUserInteractionEnabled) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mPath.moveTo(event.getX(), event.getY());
break;
case MotionEvent.ACTION_MOVE:
mPath.lineTo(event.getX(), event.getY());
invalidate();
break;
case MotionEvent.ACTION_UP:
break;
}
}
return true;
}
public void moveCursorTo(float x, float y) {
mPath.moveTo(x, y);
}
public void makeLine(float toX, float toY) {
mPath.lineTo(toX, toY);
}
public void setUserInteractionEnabled(boolean userInteractionEnabled) {
isUserInteractionEnabled = userInteractionEnabled;
}
}
And then use it like
drawingCanvas.setUserInteractionEnabled(true) // to enable user interaction
drawingCanvas.setUserInteractionEnabled(true) // to disable user interaction
To Draw programatically
drawingCanvas.moveCursorTo(70f, 70f) // Move the cursor (Define starting point)
drawingCanvas.makeLine(200f, 200f) // End point (To where you need to draw)
Use the source, Luke.
No, but seriously I found that building Node.js from source, running the tests, and looking at the benchmarks did get me on the right track. From there, the .js files in the lib directory are a good place to look, especially the file http.js.
Update: I wrote this answer over a year ago, and since that time there has an explosion in the number of great resources available for people learning Node.js. Though I still believe diving into the source is worthwhile, I think that there are now better ways to get started. I would suggest some of the books on Node.js that are starting to come out.
Well, since the date of this question post, a Python library addressed this topic. pynput library, from Moses Palmer, is GREAT to catch keyboard and mouse events in a very simple way.
(mind the missing 'i' in pynput - I missed it too... ;-) )
I was able to fix the issue by adding the maven dependency for jersey-json.
1.To get the current directory full path
>>import os
>>print os.getcwd()
o/p:"C :\Users\admin\myfolder"
1.To get the current directory folder name alone
>>import os
>>str1=os.getcwd()
>>str2=str1.split('\\')
>>n=len(str2)
>>print str2[n-1]
o/p:"myfolder"
git clone --branch my_abc http://git.abc.net/git/abc.git
Will clone the repo and leave you on the tag you are interested in.
Documentation for 1.8.0 of git clone states.
--branch can also take tags and detaches the HEAD at that commit in the resulting repository.
I would recommend using DialogFragment
.
Sure, creating a "Yes/No" dialog with it is pretty complex considering that it should be rather simple task, but creating a similar dialog box with Dialog
is surprisingly complicated as well.
(Activity lifecycle makes it complicated - you must let Activity
manage the lifecycle of the dialog box - and there is no way to pass custom parameters e.g. the custom message to Activity.showDialog
if using API levels under 8)
The nice thing is that you can usually build your own abstraction on top of DialogFragment
pretty easily.
It's funny how other answers ignore the fact that you can't write to that file...
There are a few workarounds that come to my mind which could help use an arbitrary C:\redirected\settings.xml
and use the mvn
command as usual happily ever after.
mvn
aliasIn a Unix shell (or on Cygwin) you can create
alias mvn='mvn --global-settings "C:\redirected\settings.xml"'
so when you're calling mvn blah blah
from anywhere the config is "automatically" picked up.
See How to create alias in cmd
? if you want this, but don't have a Unix shell.
mvn
wrapperConfigure your environment so that mvn
is resolved to a wrapper script when typed in the command line:
MVN_HOME/bin
or M2_HOME/bin
from your PATH
so mvn
is not resolved any more.PATH
(or use an existing one)In that folder create an mvn.bat
file with contents:
call C:\your\path\to\maven\bin\mvn.bat --global-settings "C:\redirected\settings.xml" %*
Note: if you want some projects to behave differently you can just create mvn.bat
in the same folder as pom.xml
so when you run plain mvn
it resolves to the local one.
Use where mvn
at any time to check how it is resolved, the first one will be run when you type mvn
.
mvn.bat
hackIf you have write access to C:\your\path\to\maven\bin\mvn.bat
, edit the file and add set MAVEN_CMD_LINE_ARG
to the :runm2
part:
@REM Start MAVEN2
:runm2
set MAVEN_CMD_LINE_ARGS=--global-settings "C:\redirected\settings.xml" %MAVEN_CMD_LINE_ARGS%
set CLASSWORLDS_LAUNCHER=...
mvn.sh
hackFor completeness, you can change the C:\your\path\to\maven\bin\mvn
shell script too by changing the exec "$JAVACMD"
command's
${CLASSWORLDS_LAUNCHER} "$@"
part to
${CLASSWORLDS_LAUNCHER} --global-settings "C:\redirected\settings.xml" "$@"
As a person in IT it's funny that you don't have access to your own home folder, for me this constitutes as incompetence from the company you're working for: this is equivalent of hiring someone to do software development, but not providing even the possibility to use anything other than notepad.exe or Microsoft Word to edit the source files. I'd suggest to contact your help desk or administrator and request write access at least to that particular file so that you can change the path of the local repository.
Disclaimer: None of these are tested for this particular use case, but I successfully used all of them previously for various other software.
When creating an application where I needed to generate 30,000 unique numbers within a larger range, I was able to cut down processing time from 25 seconds to 1.5 seconds using this method.
The idea is that PHP is much faster at generating random numbers than it is at checking the existence of items in an array - that is why using a while(in_array) loop can be slow.
$count = 0;
$collectNumbers = [];
while ($count < 30000) {
for ($i = 0; $i < 60000; $i++) {
$rand = mt_rand(1, 100000);
$collectNumbers[] = $rand;
}
$unique = array_unique($collectNumbers);
$count = count($unique);
}
$finalArray = array_slice($unique, 0, 30000);
This will return 30,000 unique numbers extremely quickly. Using an iteration value that is double the amount of numbers you need to generate can increase the likelihood of unique numbers the first iteration... but regardless of how many iterations it takes, this will produce a result faster than checking your array for repeated numbers in a loop.
Calling libc stdio printf
, implementing int main(){ return printf(message); }
; ----------------------------------------------------------------------------
; helloworld.asm
;
; This is a Win32 console program that writes "Hello, World" on one line and
; then exits. It needs to be linked with a C library.
; ----------------------------------------------------------------------------
global _main
extern _printf
section .text
_main:
push message
call _printf
add esp, 4
ret
message:
db 'Hello, World', 10, 0
Then run
nasm -fwin32 helloworld.asm
gcc helloworld.obj
a
There's also The Clueless Newbies Guide to Hello World in Nasm without the use of a C library. Then the code would look like this.
16-bit code with MS-DOS system calls: works in DOS emulators or in 32-bit Windows with NTVDM support. Can't be run "directly" (transparently) under any 64-bit Windows, because an x86-64 kernel can't use vm86 mode.
org 100h
mov dx,msg
mov ah,9
int 21h
mov ah,4Ch
int 21h
msg db 'Hello, World!',0Dh,0Ah,'$'
Build this into a .com
executable so it will be loaded at cs:100h
with all segment registers equal to each other (tiny memory model).
Good luck.
I use git gc after I do a big checkout, and have a lot of new object. it can save space. E.g. if you checkout a big SVN project using git-svn, and do a git gc, you typically save a lot of space
Try negation operator !
before $(this)
:
if (!$(this).parent().next().is('ul')){
Threading is another possible solution. Although the Celery based solution is better for applications at scale, if you are not expecting too much traffic on the endpoint in question, threading is a viable alternative.
This solution is based on Miguel Grinberg's PyCon 2016 Flask at Scale presentation, specifically slide 41 in his slide deck. His code is also available on github for those interested in the original source.
From a user perspective the code works as follows:
To convert an api call to a background task, simply add the @async_api decorator.
Here is a fully contained example:
from flask import Flask, g, abort, current_app, request, url_for
from werkzeug.exceptions import HTTPException, InternalServerError
from flask_restful import Resource, Api
from datetime import datetime
from functools import wraps
import threading
import time
import uuid
tasks = {}
app = Flask(__name__)
api = Api(app)
@app.before_first_request
def before_first_request():
"""Start a background thread that cleans up old tasks."""
def clean_old_tasks():
"""
This function cleans up old tasks from our in-memory data structure.
"""
global tasks
while True:
# Only keep tasks that are running or that finished less than 5
# minutes ago.
five_min_ago = datetime.timestamp(datetime.utcnow()) - 5 * 60
tasks = {task_id: task for task_id, task in tasks.items()
if 'completion_timestamp' not in task or task['completion_timestamp'] > five_min_ago}
time.sleep(60)
if not current_app.config['TESTING']:
thread = threading.Thread(target=clean_old_tasks)
thread.start()
def async_api(wrapped_function):
@wraps(wrapped_function)
def new_function(*args, **kwargs):
def task_call(flask_app, environ):
# Create a request context similar to that of the original request
# so that the task can have access to flask.g, flask.request, etc.
with flask_app.request_context(environ):
try:
tasks[task_id]['return_value'] = wrapped_function(*args, **kwargs)
except HTTPException as e:
tasks[task_id]['return_value'] = current_app.handle_http_exception(e)
except Exception as e:
# The function raised an exception, so we set a 500 error
tasks[task_id]['return_value'] = InternalServerError()
if current_app.debug:
# We want to find out if something happened so reraise
raise
finally:
# We record the time of the response, to help in garbage
# collecting old tasks
tasks[task_id]['completion_timestamp'] = datetime.timestamp(datetime.utcnow())
# close the database session (if any)
# Assign an id to the asynchronous task
task_id = uuid.uuid4().hex
# Record the task, and then launch it
tasks[task_id] = {'task_thread': threading.Thread(
target=task_call, args=(current_app._get_current_object(),
request.environ))}
tasks[task_id]['task_thread'].start()
# Return a 202 response, with a link that the client can use to
# obtain task status
print(url_for('gettaskstatus', task_id=task_id))
return 'accepted', 202, {'Location': url_for('gettaskstatus', task_id=task_id)}
return new_function
class GetTaskStatus(Resource):
def get(self, task_id):
"""
Return status about an asynchronous task. If this request returns a 202
status code, it means that task hasn't finished yet. Else, the response
from the task is returned.
"""
task = tasks.get(task_id)
if task is None:
abort(404)
if 'return_value' not in task:
return '', 202, {'Location': url_for('gettaskstatus', task_id=task_id)}
return task['return_value']
class CatchAll(Resource):
@async_api
def get(self, path=''):
# perform some intensive processing
print("starting processing task, path: '%s'" % path)
time.sleep(10)
print("completed processing task, path: '%s'" % path)
return f'The answer is: {path}'
api.add_resource(CatchAll, '/<path:path>', '/')
api.add_resource(GetTaskStatus, '/status/<task_id>')
if __name__ == '__main__':
app.run(debug=True)
You should not set state (or do anything else with side effects) from within the rendering function. When using hooks, you can use useEffect
for this.
The following version works:
import React, { useState, useEffect } from "react";
import ReactDOM from "react-dom";
const StateSelector = () => {
const initialValue = [
{ id: 0, value: " --- Select a State ---" }];
const allowedState = [
{ id: 1, value: "Alabama" },
{ id: 2, value: "Georgia" },
{ id: 3, value: "Tennessee" }
];
const [stateOptions, setStateValues] = useState(initialValue);
// initialValue.push(...allowedState);
console.log(initialValue.length);
// ****** BEGINNING OF CHANGE ******
useEffect(() => {
// Should not ever set state during rendering, so do this in useEffect instead.
setStateValues(allowedState);
}, []);
// ****** END OF CHANGE ******
return (<div>
<label>Select a State:</label>
<select>
{stateOptions.map((localState, index) => (
<option key={localState.id}>{localState.value}</option>
))}
</select>
</div>);
};
const rootElement = document.getElementById("root");
ReactDOM.render(<StateSelector />, rootElement);
and here it is in a code sandbox.
I'm assuming that you want to eventually load the list of states from some dynamic source (otherwise you could just use allowedState
directly without using useState
at all). If so, that api call to load the list could also go inside the useEffect
block.
In addition to MR Chandru"s answer above, do these steps after configuring XAMPP:
C:\xampp
xampp-control.exe
, the XAMPP Control PanelC:\Users\User-Name\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
or
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
The XAMPP Control Panel should now auto-start whenever you reboot Windows.
Depends on whether you really need to physically concatenate the two vectors or you want to give the appearance of concatenation of the sake of iteration. The boost::join function
http://www.boost.org/doc/libs/1_43_0/libs/range/doc/html/range/reference/utilities/join.html
will give you this.
std::vector<int> v0;
v0.push_back(1);
v0.push_back(2);
v0.push_back(3);
std::vector<int> v1;
v1.push_back(4);
v1.push_back(5);
v1.push_back(6);
...
BOOST_FOREACH(const int & i, boost::join(v0, v1)){
cout << i << endl;
}
should give you
1
2
3
4
5
6
Note boost::join does not copy the two vectors into a new container but generates a pair of iterators (range) that cover the span of both containers. There will be some performance overhead but maybe less that copying all the data to a new container first.
A way to simulate arrays in bash (it can be adapted for any number of dimensions of an array):
#!/bin/bash
## The following functions implement vectors (arrays) operations in bash:
## Definition of a vector <v>:
## v_0 - variable that stores the number of elements of the vector
## v_1..v_n, where n=v_0 - variables that store the values of the vector elements
VectorAddElementNext () {
# Vector Add Element Next
# Adds the string contained in variable $2 in the next element position (vector length + 1) in vector $1
local elem_value
local vector_length
local elem_name
eval elem_value=\"\$$2\"
eval vector_length=\$$1\_0
if [ -z "$vector_length" ]; then
vector_length=$((0))
fi
vector_length=$(( vector_length + 1 ))
elem_name=$1_$vector_length
eval $elem_name=\"\$elem_value\"
eval $1_0=$vector_length
}
VectorAddElementDVNext () {
# Vector Add Element Direct Value Next
# Adds the string $2 in the next element position (vector length + 1) in vector $1
local elem_value
local vector_length
local elem_name
eval elem_value="$2"
eval vector_length=\$$1\_0
if [ -z "$vector_length" ]; then
vector_length=$((0))
fi
vector_length=$(( vector_length + 1 ))
elem_name=$1_$vector_length
eval $elem_name=\"\$elem_value\"
eval $1_0=$vector_length
}
VectorAddElement () {
# Vector Add Element
# Adds the string contained in the variable $3 in the position contained in $2 (variable or direct value) in the vector $1
local elem_value
local elem_position
local vector_length
local elem_name
eval elem_value=\"\$$3\"
elem_position=$(($2))
eval vector_length=\$$1\_0
if [ -z "$vector_length" ]; then
vector_length=$((0))
fi
if [ $elem_position -ge $vector_length ]; then
vector_length=$elem_position
fi
elem_name=$1_$elem_position
eval $elem_name=\"\$elem_value\"
if [ ! $elem_position -eq 0 ]; then
eval $1_0=$vector_length
fi
}
VectorAddElementDV () {
# Vector Add Element
# Adds the string $3 in the position $2 (variable or direct value) in the vector $1
local elem_value
local elem_position
local vector_length
local elem_name
eval elem_value="$3"
elem_position=$(($2))
eval vector_length=\$$1\_0
if [ -z "$vector_length" ]; then
vector_length=$((0))
fi
if [ $elem_position -ge $vector_length ]; then
vector_length=$elem_position
fi
elem_name=$1_$elem_position
eval $elem_name=\"\$elem_value\"
if [ ! $elem_position -eq 0 ]; then
eval $1_0=$vector_length
fi
}
VectorPrint () {
# Vector Print
# Prints all the elements names and values of the vector $1 on sepparate lines
local vector_length
vector_length=$(($1_0))
if [ "$vector_length" = "0" ]; then
echo "Vector \"$1\" is empty!"
else
echo "Vector \"$1\":"
for ((i=1; i<=$vector_length; i++)); do
eval echo \"[$i]: \\\"\$$1\_$i\\\"\"
###OR: eval printf \'\%s\\\n\' \"[\$i]: \\\"\$$1\_$i\\\"\"
done
fi
}
VectorDestroy () {
# Vector Destroy
# Empties all the elements values of the vector $1
local vector_length
vector_length=$(($1_0))
if [ ! "$vector_length" = "0" ]; then
for ((i=1; i<=$vector_length; i++)); do
unset $1_$i
done
unset $1_0
fi
}
##################
### MAIN START ###
##################
## Setting vector 'params' with all the parameters received by the script:
for ((i=1; i<=$#; i++)); do
eval param="\${$i}"
VectorAddElementNext params param
done
# Printing the vector 'params':
VectorPrint params
read temp
## Setting vector 'params2' with the elements of the vector 'params' in reversed order:
if [ -n "$params_0" ]; then
for ((i=1; i<=$params_0; i++)); do
count=$((params_0-i+1))
VectorAddElement params2 count params_$i
done
fi
# Printing the vector 'params2':
VectorPrint params2
read temp
## Getting the values of 'params2'`s elements and printing them:
if [ -n "$params2_0" ]; then
echo "Printing the elements of the vector 'params2':"
for ((i=1; i<=$params2_0; i++)); do
eval current_elem_value=\"\$params2\_$i\"
echo "params2_$i=\"$current_elem_value\""
done
else
echo "Vector 'params2' is empty!"
fi
read temp
## Creating a two dimensional array ('a'):
for ((i=1; i<=10; i++)); do
VectorAddElement a 0 i
for ((j=1; j<=8; j++)); do
value=$(( 8 * ( i - 1 ) + j ))
VectorAddElementDV a_$i $j $value
done
done
## Manually printing the two dimensional array ('a'):
echo "Printing the two-dimensional array 'a':"
if [ -n "$a_0" ]; then
for ((i=1; i<=$a_0; i++)); do
eval current_vector_lenght=\$a\_$i\_0
if [ -n "$current_vector_lenght" ]; then
for ((j=1; j<=$current_vector_lenght; j++)); do
eval value=\"\$a\_$i\_$j\"
printf "$value "
done
fi
printf "\n"
done
fi
################
### MAIN END ###
################
As soon as you provide the directory where Tomcat needs to be installed and click ok you can notice download and installation starts in the progress tab of Eclipse.
Let the process complete.The error will automatically disappear.
Note: It is not mandatory to name your folder CATALINA_HOME
. I have tested this with windows. Cannot assert the same for Linux but IMO same rule should apply.
Liviu's answer was extremely helpful for me. Hope this is not bad form but i made a fiddle that may help someone else out in the future.
Two important pieces that are needed are:
$scope.entities = [{
"title": "foo",
"id": 1
}, {
"title": "bar",
"id": 2
}, {
"title": "baz",
"id": 3
}];
$scope.selected = [];
I lack the reputation to comment but ctime from Marlon Abeykoons response did not give the correct result for me. Using mtime does the trick though. (key=os.path.getmtime))
import glob
import os
list_of_files = glob.glob('/path/to/folder/*') # * means all if need specific format then *.csv
latest_file = max(list_of_files, key=os.path.getmtime)
print latest_file
I found two answers for that problem:
python os.path.getctime max does not return latest Difference between python - getmtime() and getctime() in unix system
I had a case where I'm pretty sure that my code would run smoothly. But still, got an error and I checked the Javascript console of Google Chrome to check what it is.
My error line is
opt.SetAttribute("value",values[a]);
And got the same error message:
Uncaught TypeError: undefined is not a function
Nothing seems wrong with the code above but it was not running. I troubleshoot for almost an hour and then compared it with my other running code. My error is that it was set to SetAttribute
, which should be setAttribute
.
Your regex looks correct, but you're splitting
with it instead of matching
with it. You want something like this:
// Untested code
Matcher matcher = Pattern.compile("<%=(.*?)%>").matcher(str);
while (matcher.find()) {
System.out.println(matcher.group());
}
=(A1/86400)+25569
...and the format of the cell should be date.
#####
you probably don't have a real Unix time. Check your
timestamps in https://www.epochconverter.com/. Try to divide your input by 10, 100, 1000 or 10000**A1
with the cell containing the timestamp ;-pUnix system represent a point in time as a number. Specifically the number of seconds* since a zero-time called the Unix epoch which is 1/1/1970 00:00 UTC/GMT
. This number of seconds is called "Unix timestamp" or "Unix time" or "POSIX time" or just "timestamp" and sometimes (confusingly) "Unix epoch".
In the case of Excel they chose a different zero-time and step (because who wouldn't like variety in technical details?). So Excel counts days
since 24 hours before 1/1/0000 UTC/GMT
. So 25569 corresponds to 1/1/1970 00:00 UTC/GMT
and 25570 to 2/1/1970 00:00
.
Now please note that we have 86400 seconds per day (24 hours x60 minutes each x60 seconds) and you can understand what this formula does: A1/86400
converts seconds to days and +25569
adjusts for the offset between what is time-zero for Unix and what is time-zero for Excel.
By the way DATE(1970,1,1)
will helpfully return 25569 for you in case you forget all this so a more "self-documenting" way to write our formula is:
=A1/(24*60*60) + DATE(1970,1,1)
P.S.: All these were already present in other answers and comments just not laid out as I like them and I don't feel it's OK to edit the hell out of another answer.
*: that's almost correct because you should not count leap seconds
**: E.g. in the case of this question the number was number of milliseconds since the the Unix epoch.
Doing some piggybacking off existing answers here:
public static string ToShortTimeSafe(this TimeSpan timeSpan)
{
return new DateTime().Add(timeSpan).ToShortTimeString();
}
public static string ToShortTimeSafe(this TimeSpan? timeSpan)
{
return timeSpan == null ? string.Empty : timeSpan.Value.ToShortTimeSafe();
}
You want a dict.
For (unsorted) lists in Python, the "in" operation requires O(n) time---not good when you have a large amount of data. A dict, on the other hand, is a hash table, so you can expect O(1) lookup time.
As others have noted, you might choose a set (a special type of dict) instead, if you only have keys rather than key/value pairs.
Related:
I modified the above function to account for carriage returns in IE. It's untested but I did something similar with it in my code so it should be workable.
function getCaret(el) {
if (el.selectionStart) {
return el.selectionStart;
} else if (document.selection) {
el.focus();
var r = document.selection.createRange();
if (r == null) {
return 0;
}
var re = el.createTextRange(),
rc = re.duplicate();
re.moveToBookmark(r.getBookmark());
rc.setEndPoint('EndToStart', re);
var add_newlines = 0;
for (var i=0; i<rc.text.length; i++) {
if (rc.text.substr(i, 2) == '\r\n') {
add_newlines += 2;
i++;
}
}
//return rc.text.length + add_newlines;
//We need to substract the no. of lines
return rc.text.length - add_newlines;
}
return 0;
}
You can get a list by looking into the document.cookie variable. Clearing them all is just a matter of looping over all of them and clearing them one by one.
There are available Extension methods to parse them into other primitive types.
"10".toInt()
"10".toLong()
"true".toBoolean()
"10.0".toFloat()
"10.0".toDouble()
"10".toByte()
"10".toShort()
String num = "10";
Integer.parseInt(num );
I fought with this one for a while. My goal was to have a table with headers where the widths of the each header column was the the same as the corresponding body column and was the minimum size necessary to fit the data. also the body data was scrollable underneath header.
I solved this by using divs and not tables. Each "table" was a div with the header being a div of divs and the body being a div of divs. I used the style as indicated by @sushil above. I added a bit of javascript/jQuery to balance the columns. Maybe 20-30 lines.
Unfortunately I lost the code and have to rebuild it. I know this is a bit old, but maybe it will help someone else.
The problem is that you are setting the Content-Type
by yourself, let it be blank. Google Chrome will do it for you. The multipart Content-Type
needs to know the file boundary, and when you remove the Content-Type
, Postman will do it automagically for you.
Functions are first-class variables in Python. You can declare a function, pass it around as an object, and overwrite it:
def func(): print "hello"
def another_func(f): f()
another_func(func)
def func2(): print "goodbye"
func = func2
This is a fundamental feature of modern scripting languages. JavaScript and Lua do this, too. Ruby doesn't treat functions this way; naming a function calls it.
Of course, there are ways to do these things in Ruby, but they're not first-class operations. For example, you can wrap a function with Proc.new to treat it as a variable--but then it's no longer a function; it's an object with a "call" method.
Ruby functions aren't first-class objects. Functions must be wrapped in an object to pass them around; the resulting object can't be treated like a function. Functions can't be assigned in a first-class manner; instead, a function in its container object must be called to modify them.
def func; p "Hello" end
def another_func(f); method(f)[] end
another_func(:func) # => "Hello"
def func2; print "Goodbye!"
self.class.send(:define_method, :func, method(:func2))
func # => "Goodbye!"
method(:func).owner # => Object
func # => "Goodbye!"
self.func # => "Goodbye!"
Local Storage Set Item
Syntax:
localStorage.setItem(key,value);
localStorage.getItem(key);
Example:
localStorage.setItem("name","Muthu");
if(localStorage){ //it checks browser support local storage or not
let Name=localStorage.getItem("name");
if(Name!=null){ // it checks values here or not to the variable
//do some stuff here...
}
}
also you can use
localStorage.setItem("name", JSON.stringify("Muthu"));
Session Storage Set Item
Syntax:
sessionStorage.setItem(key,value);
sessionStorage.getItem(key);
Example:
sessionStorage.setItem("name","Muthu");
if(sessionStorage){ //it checks browser support session storage/not
let Name=sessionStorage.getItem("name");
if(Name!=null){ // it checks values here or not to the variable
//do some stuff here...
}
}
also you can use
sessionStorage.setItem("name", JSON.stringify("Muthu"));
Store and Retrieve data easily
It depends on the compiler. If you compile with, say, G++ on Linux and VC++ on Windows, this will do :
#ifdef linux
...
#elif _WIN32
...
#else
...
#endif
I also randomly had this problem even after debugging many times in Android Studio. One day the debugger just wouldn't attach. I just had to quit Android Studio and reopen it and the debugger started working again.
Rendering engine goes several steps till it paints anything on the screen.
it looks like this:
The same process goes to CSS. for CSS rendering engine creates different/separated data structure for CSS but it's called CSSOM (CSS Object Model)
Browser works only with Object models so it needs to know all information about DOM and CSSDOM.
The next step is combining somehow DOM and CSSOM. because without CSSOM browser do not know how to style each element during rendering process.
All information above means that, anything you provide in your html (javascript, css ) browser will pause DOM construction process. If you are familiar with event loop, there is simple rule how event loop executes tasks:
So when you provide Javascript file, browser do not know what JS code is going to do and stops all DOM construction process and Javascript interptreter starts parsing and executing Javascript code.
Even you provide Javascript in the end of body tag, Browser will proceed all above steps to HTML and CSS but except rendering. it will find out Script tag and will stop until JS is done.
But HTML provided two additional options for script tag: async and defer.
Async - means execute code when it is downloaded and do not block DOM construction during downloading process.
Defer - means execute code after it's downloaded and browser finished DOM construction and rendering process.
MySQL Workbench
If you want to avoid writing sql, you can also do it in MySQL Workbench by right clicking on the table, choose "Alter Table ..." in the menu.
When the table structure view opens, go to tab "Options" (on the lower bottom of the view), and set "Auto Increment" field to the value of the next autoincrement number.
Don't forget to hit "Apply" when you are done with all changes.
PhpMyAdmin:
If you are using phpMyAdmin, you can click on the table in the lefthand navigation, go to the tab "Operations" and under Table Options change the AUTO_INCREMENT value and click OK.
Heres a good one with NSRegularExpression that's working for me.
[text rangeOfString:@"^.+@.+\\..{2,}$" options:NSRegularExpressionSearch].location != NSNotFound;
You can insert whatever regex you want but I like being able to do it in one line.
If you want to use AngularJs Directive with dynamic template, you can use those answers,But here is more professional and legal syntax of it.You can use templateUrl not only with single value.You can use it as a function,which returns a value as url.That function has some arguments,which you can use.
For Docker version 18.09.0 I found that format flag won't be needed
docker rm $(docker stop $(docker ps -a -q -f ancestor=<image-name>))
I had the same issue and took a whole day to figure out the problem. This error message by Facebook SDK is very vague. I had this problem due to openURL: method being overwritten in MyApplication. I removed the overwritten method and facebook login worked fine.
You can use ordinal. So PAGE.SIGN_CREATE.ordinal()
returns 1
.
EDIT:
The only problem with doing this is that if you add, remove or reorder the enum values you will break the system. For many this is not an issue as they will not remove enums and will only add additional values to the end. It is also no worse than integer constants which also require you not to renumber them. However it is best to use a system like:
public enum PAGE{
SIGN_CREATE0(0), SIGN_CREATE(1) ,HOME_SCREEN(2), REGISTER_SCREEN(3)
private int id;
PAGE(int id){
this.id = id;
}
public int getID(){
return id;
}
}
You can then use getID
. So PAGE.SIGN_CREATE.getID()
returns 1
.
Date has before and after methods and can be compared to each other as follows:
if(todayDate.after(historyDate) && todayDate.before(futureDate)) {
// In between
}
For an inclusive comparison:
if(!historyDate.after(todayDate) && !futureDate.before(todayDate)) {
/* historyDate <= todayDate <= futureDate */
}
You could also give Joda-Time a go, but note that:
Joda-Time is the de facto standard date and time library for Java prior to Java SE 8. Users are now asked to migrate to java.time (JSR-310).
Back-ports are available for Java 6 and 7 as well as Android.
You can use SET ECHO ON
in the beginning of your script to achieve that, however, you have to specify your script using @
instead of <
(also had to add EXIT
at the end):
test.sql
SET ECHO ON
SELECT COUNT(1) FROM dual;
SELECT COUNT(1) FROM (SELECT 1 FROM dual UNION SELECT 2 FROM dual);
EXIT
terminal
sqlplus hr/oracle@orcl @/tmp/test.sql > /tmp/test.log
test.log
SQL> SQL> SELECT COUNT(1) FROM dual; COUNT(1) ---------- 1 SQL> SQL> SELECT COUNT(1) FROM (SELECT 1 FROM dual UNION SELECT 2 FROM dual); COUNT(1) ---------- 2 SQL> SQL> EXIT
first , you dont need to use a local assigment for your job, just check the above answer
second, its simple to use locals() and globals() to got the variables table and then change the value
check this sample code:
print [locals().__setitem__('x', 'Hillo :]'), x][-1]
if you need to change the add a global variable to your environ, try to replace locals() with globals()
python's list comp is cool but most of the triditional project dont accept this(like flask :[)
hope it could help
It looks that some files are still left and some registry keys are left. So you can run revocleaner tool to remove those entries as well. Do a reboot and install again it should be doing it now. I also faced issue and by complete cleaning I got Rid of it.
Use google guava libs to handle is-null-check (deamon's update)
Drawable drawable = Optional.of(Common.getDrawableFromUrl(this, product.getMapPath())).or(getRandomDrawable());
Most likely, you want
SELECT username
FROM dba_users
That will show you all the users in the system (and thus all the potential schemas). If your definition of "schema" allows for a schema to be empty, that's what you want. However, there can be a semantic distinction where people only want to call something a schema if it actually owns at least one object so that the hundreds of user accounts that will never own any objects are excluded. In that case
SELECT username
FROM dba_users u
WHERE EXISTS (
SELECT 1
FROM dba_objects o
WHERE o.owner = u.username )
Assuming that whoever created the schemas was sensible about assigning default tablespaces and assuming that you are not interested in schemas that Oracle has delivered, you can filter out those schemas by adding predicates on the default_tablespace
, i.e.
SELECT username
FROM dba_users
WHERE default_tablespace not in ('SYSTEM','SYSAUX')
or
SELECT username
FROM dba_users u
WHERE EXISTS (
SELECT 1
FROM dba_objects o
WHERE o.owner = u.username )
AND default_tablespace not in ('SYSTEM','SYSAUX')
It is not terribly uncommon to come across a system where someone has incorrectly given a non-system user a default_tablespace
of SYSTEM
, though, so be certain that the assumptions hold before trying to filter out the Oracle-delivered schemas this way.
HTML Code
<html>
<body>
<head>
<title></title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
<label for="file"><span>Filename:</span></label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>
<?php
//============================= DATABASE CONNECTIVITY d ====================
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "test";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
else
//============================= DATABASE CONNECTIVITY u ====================
//============================= Retrieve data from DB d ====================
$sql = "SELECT name, size, type FROM videos";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc())
{
$path = "uploaded/" . $row["name"];
echo $path . "<br>";
}
} else {
echo "0 results";
}
$conn->close();
//============================= Retrieve data from DB d ====================
?>
</body>
</html>
If you are using TextMate or a similar programme, do save as, and then in encodings choose LF
instead of CRLF
.
You're trying to call an instance method on the class. To call an instance method on a class you must create an instance on which to call the method. If you want to call the method on non-instances add the static keyword. For example
class Example {
public static string NonInstanceMethod() {
return "static";
}
public string InstanceMethod() {
return "non-static";
}
}
static void SomeMethod() {
Console.WriteLine(Example.NonInstanceMethod());
Console.WriteLine(Example.InstanceMethod()); // Does not compile
Example v1 = new Example();
Console.WriteLine(v1.InstanceMethod());
}
sed -i '/pattern/d' file
Use 'd' to delete a line. This works at least with GNU-Sed.
If your Sed doesn't have the option, to change a file in place, maybe you can use an intermediate file, to store the modification:
sed '/pattern/d' file > tmpfile && mv tmpfile file
Writing directly to the source usually doesn't work: sed '/pattern/d' file > file
so make a copy before trying out, if you doubt it.
import java.io.*;
import java.util.*;
import java.util.HashMap;
public class Solution
{
public static void main(String[] args)
{
HashMap<Integer,String> hm = new HashMap<Integer,String>();
hm.put(1,"SUNDAY");
hm.put(2,"MONDAY");
hm.put(3,"TUESDAY");
hm.put(4,"WEDNESDAY");
hm.put(5,"THURSDAY");
hm.put(6,"FRIDAY");
hm.put(7,"SATURDAY");
Scanner in = new Scanner(System.in);
String month = in.next();
String day = in.next();
String year = in.next();
String format = year + "/" + month + "/" + day;
Date date = null;
try
{
SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
date = formatter.parse(format);
}
catch(Exception e){
}
Calendar c = Calendar.getInstance();
c.setTime(date);
int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
System.out.println(hm.get(dayOfWeek));
}
}
Consider this to get a fully unique jar file:
To make the client code (from tolomea) work on Solaris you need to pass the ttl value for the IP_MULTICAST_TTL
socket option as an unsigned char. Otherwise you will get an error.
This worked for me on Solaris 10 and 11:
import socket
import struct
MCAST_GRP = '224.1.1.1'
MCAST_PORT = 5007
ttl = struct.pack('B', 2)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, ttl)
sock.sendto("robot", (MCAST_GRP, MCAST_PORT))
Looks like there is an entry in the official FAQ for this. The source code is in C but the same principle applies, as outlined here in this mailing list post.
Use this jQuery plugin https://gianlucaguarini.github.io/jQuery.BlackAndWhite/
That seems to be the only one cross-browser solution. Plus it has a nice fade in and fade out effect.
$('.bwWrapper').BlackAndWhite({
hoverEffect : true, // default true
// set the path to BnWWorker.js for a superfast implementation
webworkerPath : false,
// to invert the hover effect
invertHoverEffect: false,
// this option works only on the modern browsers ( on IE lower than 9 it remains always 1)
intensity:1,
speed: { //this property could also be just speed: value for both fadeIn and fadeOut
fadeIn: 200, // 200ms for fadeIn animations
fadeOut: 800 // 800ms for fadeOut animations
},
onImageReady:function(img) {
// this callback gets executed anytime an image is converted
}
});
\r
is used to point to the start of a line and can replace the text from there, e.g.
main()
{
printf("\nab");
printf("\bsi");
printf("\rha");
}
Produces this output:
hai
\n
is for new line.
Inspired by @RonaldBlaschke's solution, I came up with this:
public class Log4JTester extends ExternalResource {
TestAppender appender;
@Override
protected void before() {
appender = new TestAppender();
final Logger rootLogger = Logger.getRootLogger();
rootLogger.addAppender(appender);
}
@Override
protected void after() {
final Logger rootLogger = Logger.getRootLogger();
rootLogger.removeAppender(appender);
}
public void assertLogged(Matcher<String> matcher) {
for(LoggingEvent event : appender.events) {
if(matcher.matches(event.getMessage())) {
return;
}
}
fail("No event matches " + matcher);
}
private static class TestAppender extends AppenderSkeleton {
List<LoggingEvent> events = new ArrayList<LoggingEvent>();
@Override
protected void append(LoggingEvent event) {
events.add(event);
}
@Override
public void close() {
}
@Override
public boolean requiresLayout() {
return false;
}
}
}
... which allows you to do:
@Rule public Log4JTester logTest = new Log4JTester();
@Test
public void testFoo() {
user.setStatus(Status.PREMIUM);
logTest.assertLogged(
stringContains("Note added to account: premium customer"));
}
You could probably make it use hamcrest in a smarter way, but I've left it at this.
this worked fine for me:
class ItemSerializer(serializers.ModelSerializer):
category_name = serializers.ReadOnlyField(source='category.name')
class Meta:
model = Item
fields = "__all__"
Although this is an old question, and feedback was provided in 2015, right now it's much simpler, as S3 Web Console has enabled a "Get Size" option:
Which provides the following:
for me the solution was to include skip = 0 (number of rows to skip at the top of the file. Can be set >0)
mydata <- read.csv(file = "file.csv", header = TRUE, sep = ",", skip = 22)
If you want to hide just the axis text keeping the grid lines:
frame1 = plt.gca()
frame1.axes.xaxis.set_ticklabels([])
frame1.axes.yaxis.set_ticklabels([])
Doing set_visible(False)
or set_ticks([])
will also hide the grid lines.
Navigating to the file finally fixed this for me. In my case: http://localhost:4200/favicon.ico
I had tried to refresh, stop and start ng serve
again, and "Empty Cache and Hard Reload", none worked.