Apache Commons has decorator for Map to expire entries: PassiveExpiringMap It's more simple than caches from Guava.
P.S. be careful, it's not synchronized.
NULL can also be found in:
#include <string.h>
String.h will pull in the NULL from somewhere else.
First, ensure that your version of Eclipse and JDK match, either both 64-bit or both 32-bit (you can't mix-and-match 32-bit with 64-bit).
Second, the -vm argument in eclipse.ini
should point to the java executable. See
http://wiki.eclipse.org/Eclipse.ini for examples.
If you're unsure of what version (64-bit or 32-bit) of Eclipse you have installed, you can determine that a few different ways. See How to find out if an installed Eclipse is 32 or 64 bit version?
The reason is your result
assigned to the returning Task
which represents continuation of your method, and you have a different Task in your method which is running, if you directly assign Task like this you will get your expected results:
var task = Task.Run(() =>
{
for (int i = 10; i < 432543543; i++)
{
// just for a long job
double d3 = Math.Sqrt((Math.Pow(i, 5) - Math.Pow(i, 2)) / Math.Sin(i * 8));
}
return "Foo Completed.";
});
while (task.Status != TaskStatus.RanToCompletion)
{
Console.WriteLine("Thread ID: {0}, Status: {1}", Thread.CurrentThread.ManagedThreadId,task.Status);
}
Console.WriteLine("Result: {0}", task.Result);
Console.WriteLine("Finished.");
Console.ReadKey(true);
The output
:
Consider this for better explanation: You have a Foo
method,let's say it Task A, and you have a Task
in it,let's say it Task B, Now the running task, is Task B, your Task A awaiting for Task B result.And you assing your result variable to your returning Task
which is Task A, because Task B doesn't return a Task, it returns a string
. Consider this:
If you define your result like this:
Task result = Foo(5);
You won't get any error.But if you define it like this:
string result = Foo(5);
You will get:
Cannot implicitly convert type 'System.Threading.Tasks.Task' to 'string'
But if you add an await
keyword:
string result = await Foo(5);
Again you won't get any error.Because it will wait the result (string) and assign it to your result variable.So for the last thing consider this, if you add two task into your Foo Method:
private static async Task<string> Foo(int seconds)
{
await Task.Run(() =>
{
for (int i = 0; i < seconds; i++)
{
Console.WriteLine("Thread ID: {0}, second {1}.", Thread.CurrentThread.ManagedThreadId, i);
Task.Delay(TimeSpan.FromSeconds(1)).Wait();
}
// in here don't return anything
});
return await Task.Run(() =>
{
for (int i = 0; i < seconds; i++)
{
Console.WriteLine("Thread ID: {0}, second {1}.", Thread.CurrentThread.ManagedThreadId, i);
Task.Delay(TimeSpan.FromSeconds(1)).Wait();
}
return "Foo Completed.";
});
}
And if you run the application, you will get the same results.(WaitingForActivation) Because now, your Task A is waiting those two tasks.
Math.Floor()
: Returns the largest integer less than or equal to the specified double-precision floating-point number.
Math.Round()
: Rounds a value to the nearest integer or to the specified number of fractional digits.
As others have said, it's a new syntax to create functions.
However, this kind of functions differ from normal ones:
They bind the this
value. As explained by the spec,
An ArrowFunction does not define local bindings for
arguments
,super
,this
, ornew.target
. Any reference toarguments
,super
,this
, ornew.target
within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an immediately enclosing function.Even though an ArrowFunction may contain references to
super
, the function object created in step 4 is not made into a method by performing MakeMethod. An ArrowFunction that referencessuper
is always contained within a non-ArrowFunction and the necessary state to implementsuper
is accessible via the scope that is captured by the function object of the ArrowFunction.
They are non-constructors.
That means they have no [[Construct]] internal method, and thus can't be instantiated, e.g.
var f = a => a;
f(123); // 123
new f(); // TypeError: f is not a constructor
Try this:
UPDATE business AS b
INNER JOIN business_geocode AS g ON b.business_id = g.business_id
SET b.mapx = g.latitude,
b.mapy = g.longitude
WHERE (b.mapx = '' or b.mapx = 0) and
g.latitude > 0
Since you said the query yielded a syntax error, I created some tables that I could test it against and confirmed that there is no syntax error in my query:
mysql> create table business (business_id int unsigned primary key auto_increment, mapx varchar(255), mapy varchar(255)) engine=innodb;
Query OK, 0 rows affected (0.01 sec)
mysql> create table business_geocode (business_geocode_id int unsigned primary key auto_increment, business_id int unsigned not null, latitude varchar(255) not null, longitude varchar(255) not null, foreign key (business_id) references business(business_id)) engine=innodb;
Query OK, 0 rows affected (0.01 sec)
mysql> UPDATE business AS b
-> INNER JOIN business_geocode AS g ON b.business_id = g.business_id
-> SET b.mapx = g.latitude,
-> b.mapy = g.longitude
-> WHERE (b.mapx = '' or b.mapx = 0) and
-> g.latitude > 0;
Query OK, 0 rows affected (0.00 sec)
Rows matched: 0 Changed: 0 Warnings: 0
See? No syntax error. I tested against MySQL 5.5.8.
You can do this by subsetting the data you pass into your merge:
merge(x = DF1, y = DF2[ , c("Client", "LO")], by = "Client", all.x=TRUE)
Or you can simply delete the column after your current merge :)
Using array_search()
and unset
, try the following:
if (($key = array_search($del_val, $messages)) !== false) {
unset($messages[$key]);
}
array_search()
returns the key of the element it finds, which can be used to remove that element from the original array using unset()
. It will return FALSE
on failure, however it can return a false-y value on success (your key may be 0
for example), which is why the strict comparison !==
operator is used.
The if()
statement will check whether array_search()
returned a value, and will only perform an action if it did.
Update July 2013:
Another grep tool I now use all the time on Windows is AstroGrep:
Its ability to show me more than just the line search (i.e. the --context=NUM of a command-line grep) is invaluable.
And it is fast. Very fast, even on an old computer with non-SSD drive (I know, they used to do this hard drive with spinning disks, called platters, crazy right?)
It is free.
It is portable (simple zip archive to unzip).
Original answer October 2008
Gnu Grep is alright
You can download it for example here: (site ftp)
All the usual options are here.
That, combined with gawk and xargs (includes 'find', from GnuWin32), and you can really script like you were on Unix!
See also the options I am using to grep recursively:
grep --include "*.xxx" -nRHI "my Text to grep" *
I wouldn't suggest using the Eclipse tool to generate the WS Client because I had bad experience with it:
I am not really sure if this matters but I had to consume a WS written in .NET. When I used the Eclipse's "New Web Service Client" tool it generated the Java classes using Axis (version 1.x) which as you can check is old (last version from 2006). There is a newer version though that is has some major changes but Eclipse doesn't use it.
Why the old version of Axis matters you'll say? Because when using OpenJDK you can run into some problems like missing cryptography algorithms in OpenJDK that are presented in the Oracle's JDK and some libraries like this one depend on them.
So I just used the wsimport tool and ended my headaches.
Here's an example...
static class Program
{
[DllImport("user32.dll")]
public static extern int SetForegroundWindow(IntPtr hWnd);
[STAThread]
static void Main()
{
while(true)
{
Process [] processes = Process.GetProcessesByName("iexplore");
foreach(Process proc in processes)
{
SetForegroundWindow(proc.MainWindowHandle);
SendKeys.SendWait("{F5}");
}
Thread.Sleep(5000);
}
}
}
a better one... less anoying...
static class Program
{
const UInt32 WM_KEYDOWN = 0x0100;
const int VK_F5 = 0x74;
[DllImport("user32.dll")]
static extern bool PostMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);
[STAThread]
static void Main()
{
while(true)
{
Process [] processes = Process.GetProcessesByName("iexplore");
foreach(Process proc in processes)
PostMessage(proc.MainWindowHandle, WM_KEYDOWN, VK_F5, 0);
Thread.Sleep(5000);
}
}
}
Renaming columns in Pandas is an easy task.
df.rename(columns={'$a': 'a', '$b': 'b', '$c': 'c', '$d': 'd', '$e': 'e'}, inplace=True)
Updated 2018
Make sure your table includes the table
class. This is because Bootstrap 4 tables are "opt-in" so the table
class must be intentionally added to the table.
http://codeply.com/go/zJLXypKZxL
Bootstrap 3.x also had some CSS to reset the table cells so that they don't float..
table td[class*=col-], table th[class*=col-] {
position: static;
display: table-cell;
float: none;
}
I don't know why this isn't is Bootstrap 4 alpha, but it may be added back in the final release. Adding this CSS will help all columns to use the widths set in the thead
..
UPDATE (as of Bootstrap 4.0.0)
Now that Bootstrap 4 is flexbox, the table cells will not assume the correct width when adding col-*
. A workaround is to use the d-inline-block
class on the table cells to prevent the default display:flex of columns.
Another option in BS4 is to use the sizing utils classes for width...
<thead>
<tr>
<th class="w-25">25</th>
<th class="w-50">50</th>
<th class="w-25">25</th>
</tr>
</thead>
Lastly, you could use d-flex
on the table rows (tr), and the col-*
grid classes on the columns (th,td)...
<table class="table table-bordered">
<thead>
<tr class="d-flex">
<th class="col-3">25%</th>
<th class="col-3">25%</th>
<th class="col-6">50%</th>
</tr>
</thead>
<tbody>
<tr class="d-flex">
<td class="col-sm-3">..</td>
<td class="col-sm-3">..</td>
<td class="col-sm-6">..</td>
</tr>
</tbody>
</table>
Note: Changing the TR to display:flex can alter the borders
static
before a global variable means that this variable is not accessible from outside the compilation module where it is defined.
E.g. imagine that you want to access a variable in another module:
foo.c
int var; // a global variable that can be accessed from another module
// static int var; means that var is local to the module only.
...
bar.c
extern int var; // use the variable in foo.c
...
Now if you declare var
to be static you can't access it from anywhere but the module where foo.c
is compiled into.
Note, that a module is the current source file, plus all included files. i.e. you have to compile those files separately, then link them together.
I have met the same problem. My project is running on the local server. I checked my php code.
$db = mysqli_connect('localhost', 'root', 'root', 'smart');
I use localhost
to connect to my local database. That maybe the cause of the problem which you're describing. You can modify your HOSTS
file. Add the line
127.0.0.1 localhost
.
You can also try <C-x><C-l> which will repeat the last line from insert mode and brings you a completion window with all of the lines. It works almost like <C-p>
Also, see the Stack Overflow question How to detect what .NET Framework versions and service packs are installed? which also mentions:
There is an official Microsoft answer to this question at the knowledge base article [How to determine which versions and service pack levels of the Microsoft .NET Framework are installed][2]
Article ID: 318785 - Last Review: November 7, 2008 - Revision: 20.1 How to determine which versions of the .NET Framework are installed and whether service packs have been applied.
Unfortunately, it doesn't appear to work, because the mscorlib.dll
version in the 2.0 directory has a 2.0 version, and there is no mscorlib.dll
version in either the 3.0 or 3.5 directories even though 3.5 SP1 is installed ... Why would the official Microsoft answer be so misinformed?
You may try this way. just use a function to get your object
def get_object(self, id):
try:
return UniversityDetails.objects.get(email__exact=email)
except UniversityDetails.DoesNotExist:
return False
If you have control over your data and you know your double quotes surround the string (so do not appear inside string) and the string is an integer ... say with :
"20151212211647278"
or similar this nicely removes the surrounding quotes
JSON.parse("20151212211647278");
Not a universal answer however slick for niche needs
Since I cannot comment on the answer, I'd build on Jin Izzraeel's answer
var myBuffer = []; var str = 'Stack Overflow'; var buffer = new Buffer(str, 'utf16le'); for (var i = 0; i < buffer.length; i++) { myBuffer.push(buffer[i]); } console.log(myBuffer);
by saying that you could use this if you want to use a Node.js buffer in your browser.
https://github.com/feross/buffer
Therefore, Tom Stickel's objection is not valid, and the answer is indeed a valid answer.
you must write single quotes then double quotes then dot before name of field and after like that
mysql_query("UPDATE blogEntry SET content ='".$udcontent."', title = '".$udtitle."' WHERE id = '".$id."' ");
Use prop() instead of attr() to set the value of checked
. Also use :checkbox
in find method instead of input
and be specific.
$("#news_list tr").click(function() {
var ele = $(this).find('input');
if(ele.is(':checked')){
ele.prop('checked', false);
$(this).removeClass('admin_checked');
}else{
ele.prop('checked', true);
$(this).addClass('admin_checked');
}
});
Use prop instead of attr for properties like checked
As of jQuery 1.6, the .attr() method returns undefined for attributes that have not been set. To retrieve and change DOM properties such as the checked, selected, or disabled state of form elements, use the .prop() method
I just got this error running kadence the installed "kadence" script checks for nodejs first and only runs node if there is no nodejs. I have the latest version of node linked into my ~/bin directory but nodejs runs an older version that I had forgotten to uninstall but never caused problems until just now.
So people with this problem might check if node and nodejs actually run the same version of node...
You'd need to remove the blank table cell element entirely, and change the colspan attribute on another cell in the row to encompass the released space, e.g.:
refToCellToRemove.remove();
refTocellToExpand.colspan = 4;
Note that setting it via setAttribute (which would otherwise be correct) will not work properly on IE.
Beware: IE does some very strange table layout things when you muck about with colspans dynamically. If you can avoid it, I would.
Lars Haugseth answer only worked from the command line for me where it gives this error if executed from a shell script:
sort: multi-character tab ‘$\t’
The solution if it's coded in a shell script if anyone's looking is
sort -t' '
the tab character is in between the quote.
It's example from great MSDN article about using ExpandoObject for creating dynamic ad-hoc types for incoming structured data (i.e XML, Json).
We can also assign delegate to ExpandoObject's dynamic property:
dynamic person = new ExpandoObject();
person.FirstName = "Dino";
person.LastName = "Esposito";
person.GetFullName = (Func<String>)(() => {
return String.Format("{0}, {1}",
person.LastName, person.FirstName);
});
var name = person.GetFullName();
Console.WriteLine(name);
Thus it allows us to inject some logic into dynamic object at runtime. Therefore, together with lambda expressions, closures, dynamic keyword and DynamicObject class, we can introduce some elements of functional programming into our C# code, which we knows from dynamic languages as like JavaScript or PHP.
I ran into the same issue a while ago and did solve it by using reflection with some help from Jackson.
First populate a map with all the fields on an Object. Then add those map entries as parameters to the MockHttpServletRequestBuilder.
In this way you can use any Object and you are passing it as request parameters. I'm sure there are other solutions out there but this one worked for us:
@Test
public void testFormEdit() throws Exception {
getMockMvc()
.perform(
addFormParameters(post(servletPath + tableRootUrl + "/" + POST_FORM_EDIT_URL).servletPath(servletPath)
.param("entityID", entityId), validEntity)).andDo(print()).andExpect(status().isOk())
.andExpect(content().contentType(MediaType.APPLICATION_JSON)).andExpect(content().string(equalTo(entityId)));
}
private MockHttpServletRequestBuilder addFormParameters(MockHttpServletRequestBuilder builder, Object object)
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
SimpleDateFormat dateFormat = new SimpleDateFormat(applicationSettings.getApplicationDateFormat());
Map<String, ?> propertyValues = getPropertyValues(object, dateFormat);
for (Entry<String, ?> entry : propertyValues.entrySet()) {
builder.param(entry.getKey(),
Util.prepareDisplayValue(entry.getValue(), applicationSettings.getApplicationDateFormat()));
}
return builder;
}
private Map<String, ?> getPropertyValues(Object object, DateFormat dateFormat) {
ObjectMapper mapper = new ObjectMapper();
mapper.setDateFormat(dateFormat);
mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
mapper.registerModule(new JodaModule());
TypeReference<HashMap<String, ?>> typeRef = new TypeReference<HashMap<String, ?>>() {};
Map<String, ?> returnValues = mapper.convertValue(object, typeRef);
return returnValues;
}
From the doc for path.resolve
:
The resulting path is normalized and trailing slashes are removed unless the path is resolved to the root directory.
But path.join
keeps trailing slashes
So
__dirname = '/';
path.resolve(__dirname, 'foo/'); // '/foo'
path.join(__dirname, 'foo/'); // '/foo/'
I encountered this issue today. the issue has to do with the $config['base_url'] . I noticed htpp://www.domain.com and http://example.com was the issue. to fix , always set your base_url to http://www.example.com
Break
statement will break the whole loop and execute the code after loop and Return
will not execute the code after that return
statement and execute the loop with next increment.
Break
for(int i=0;i<5;i++){
print(i)
if(i==2)
{
break;
}
}
output: 0 1
return
for(int i=0;i<5;i++)
{
print(i)
if(i==2)
{
return;
}
}
output: 0 1 3 4
I was passing the values without the quotes. Once I passed the conditions inside the single quotes worked like a charm.
Select * from emp_table where emp_id=123;
instead of the above use this:
Select * from emp_table where emp_id='123';
Note: I found this question (varchar(255) v tinyblob v tinytext), which says that VARCHAR(n) requires n+1 bytes of storage for n<=255, n+2 bytes of storage for n>255. Is this the only reason? That seems kind of arbitrary, since you would only be saving two bytes compared to VARCHAR(256), and you could just as easily save another two bytes by declaring it VARCHAR(253).
No. you don't save two bytes by declaring 253. The implementation of the varchar is most likely a length counter and a variable length, nonterminated array. This means that if you store "hello" in a varchar(255) you will occupy 6 bytes: one byte for the length (the number 5) and 5 bytes for the five letters.
One way is to do:
sys.exit(0)
You will have to import sys
of course.
Another way is to break
out of your infinite loop. For example, you could do this:
while True:
choice = get_input()
if choice == "a":
# do something
elif choice == "q":
break
Yet another way is to put your main loop in a function, and use return
:
def run():
while True:
choice = get_input()
if choice == "a":
# do something
elif choice == "q":
return
if __name__ == "__main__":
run()
The only reason you need the run()
function when using return
is that (unlike some other languages) you can't directly return
from the main part of your Python code (the part that's not inside a function).
/**
* Get JSONP data for cross-domain AJAX requests
* @private
* @link http://cameronspear.com/blog/exactly-what-is-jsonp/
* @param {String} url The URL of the JSON request
* @param {String} callback The name of the callback to run on load
*/
var loadJSONP = function ( url, callback ) {
// Create script with url and callback (if specified)
var ref = window.document.getElementsByTagName( 'script' )[ 0 ];
var script = window.document.createElement( 'script' );
script.src = url + (url.indexOf( '?' ) + 1 ? '&' : '?') + 'callback=' + callback;
// Insert script tag into the DOM (append to <head>)
ref.parentNode.insertBefore( script, ref );
// After the script is loaded (and executed), remove it
script.onload = function () {
this.remove();
};
};
/**
* Example
*/
// Function to run on success
var logAPI = function ( data ) {
console.log( data );
}
// Run request
loadJSONP( 'http://api.petfinder.com/shelter.getPets?format=json&key=12345&shelter=AA11', 'logAPI' );
#!/bin/sh
as most scripts do not need specific bash feature and should be written for sh.
Also, this makes scripts work on the BSDs, which do not have bash per default.
you could submit all parameters with such naming:
params[0][topdiameter]
params[0][bottomdiameter]
params[1][topdiameter]
params[1][bottomdiameter]
then later you do something like this:
foreach ($_REQUEST['params'] as $item) {
echo $item['topdiameter'];
echo $item['bottomdiameter'];
}
@Taesung Shin is right, but then just some more magic to make it into a data.frame
.
I added a "x|y" line to avoid ambiguities:
df <- data.frame(ID=11:13, FOO=c('a|b','b|c','x|y'))
foo <- data.frame(do.call('rbind', strsplit(as.character(df$FOO),'|',fixed=TRUE)))
Or, if you want to replace the columns in the existing data.frame:
within(df, FOO<-data.frame(do.call('rbind', strsplit(as.character(FOO), '|', fixed=TRUE))))
Which produces:
ID FOO.X1 FOO.X2
1 11 a b
2 12 b c
3 13 x y
What you probably did to cause this:
This kind of thing happens when you go to bang out a little program. You're about to change something which was already working, so you cast your level-3 spell of perpetual undoability:
machine1:~/proj1> git init
and you start adding/committing. But then, the project starts getting more involved and you want to work on it from another computer (like your home PC or laptop), so you do something like
machine2:~> git clone ssh://machine1/~/proj1
and it clones and everything looks good, and so you work on your code from machine2.
Then... you try to push your commits from machine2, and you get the warning message in the title.
The reason for this message is because the git repo you pulled from was kinda intended to be used just for that folder on machine1. You can clone from it just fine, but pushing can cause problems. The "proper" way to be managing the code in two different locations is with a "bare" repo, like has been suggested. A bare repo isn't designed to have any work being done in it, it is meant to coordinate the commits from multiple sources. This is why the top-rated answer suggests deleting all files/folders other than the .git folder after you git config --bool core.bare true
.
Clarifying the top-rated answer: Many of the comments to that answer say something like "I didn't delete the non-.git files from the machine1 and I was still able to commit from machine2". That's right. However, those other files are completely "divorced" from the git repo, now. Go try git status
in there and you should see something like "fatal: This operation must be run in a work tree". So, the suggestion to delete the files isn't so that the commit from machine2 will work; it's so that you don't get confused and think that git is still tracking those files. But, deleting the files is a problem if you still want to work on the files on machine1, isn't it?
So, what should you really do?
Depends upon how much you plan to still work on machine1 and machine2...
If you're done developing from machine1 and have moved all of your development to machine2... just do what the top-rated answer suggests: git config --bool core.bare true
and then, optionally, delete all files/folders other than .git from that folder, since they're untracked and likely to cause confusion.
If your work on machine2 was just a one-time thing, and you don't need to continue development there... then don't bother with making a bare repo; just ftp/rsync/scp/etc. your files from machine*2* on top of the files on machine*1*, commit/push from machine*1*, and then delete the files off of machine*2*. Others have suggested creating a branch, but I think that's a little messy if you just want to merge some development you did on a one-time basis from another machine.
If you need to continue development on both machine1 and machine2... then you need to set things up properly. You need to convert your repo to a bare, then you need to make a clone of that on machine1 for you to work in. Probably the quickest way to do this is to do
machine1:~/proj1> git config --bool core.bare true
machine1:~/proj1> mv .git/ ../proj1.git
machine1:~/proj1> cd ..
machine1:~> rm -rf proj1
machine1:~> git clone proj1.git
machine1:~> cd proj1
Very important: because you've moved the location of the repo from proj1 to proj1.git, you need to update this in the .git/config file on machine2. After that, you can commit your changes from machine2. Lastly, I try to keep my bare repos in a central location, away from my work trees (i.e. don't put 'proj1.git' in the same parent folder as 'proj1'). I advise you to do likewise, but I wanted to keep the steps above as simple as possible.
If Andy Copley's answer worked for you but simply rebuilding the solution doesn't work, then go to Project | Project Dependencies and make sure that the project that has your Global.asax.cs file in it is dependent on all the other non-test projects in the solution.
Install
npm i core-js
Modular standard library for JavaScript. Includes polyfills for ECMAScript up to 2019: promises, symbols, collections, iterators, typed arrays, many other features, ECMAScript proposals, some cross-platform WHATWG / W3C features and proposals like URL. You can load only required features or use it without global namespace pollution.
JUnit+Webdriver
assertEquals(driver.findElement(By.xpath("//this/is/the/xpath/location/where/the/text/sits".getText(),"insert the text you're expecting to see here");
If in the event your expected text doesn't match the xpath text, webdriver will tell you what the actual text was vs what you were expecting.
For compatibility when ajax is not available, set .val('') or it will resend the last ajax-uploaded file that is still present in the input. The following should properly clear the input whilst retaining .on() events:
var input = $("input[type='file']");
input.html(input.html()).val('');
You can download the 10.7 Lion JDK from http://connect.apple.com.
Sign in and click the java
section on the right.
The jdk is installed into a different location then previous. This will result in IDEs (such as Eclipse) being unable to locate source code and javadocs.
At the time of writing the JDK ended up here:
/Library/Java/JavaVirtualMachines/1.6.0_26-b03-383.jdk/Contents/Home
Open up eclipse preferences and go to Java --> Installed JREs page
Rather than use the "JVM Contents (MacOS X Default) we will need to use the JDK location
At the time of writing Search is not aware of the new JDK location; we we will need to click on the Add button
From the Add JRE wizard choose "MacOS X VM" for the JRE Type
For the JRE Definition Page we need to fill in the following:
The other fields will now auto fill, with the default JRE name being "Home". You can quickly correct this to something more meaningful:
Finish the wizard and return to the Installed JREs page
Choose "System JDK" from the list
You can now develop normally with:
package lecture3;
import java.util.Scanner;
public class divisibleBy2and5 {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Enter an integer number:");
Scanner input = new Scanner(System.in);
int x;
x = input.nextInt();
if (x % 2==0){
System.out.println("The integer number you entered is divisible by 2");
}
else{
System.out.println("The integer number you entered is not divisible by 2");
if(x % 5==0){
System.out.println("The integer number you entered is divisible by 5");
}
else{
System.out.println("The interger number you entered is not divisible by 5");
}
}
}
}
To avoid error, an important point about the new dataset is the name of independent variable. It must be the same as reported in the model. Another way is to nest the two function without creating a new dataset
model <- lm(Coupon ~ Total, data=df)
predict(model, data.frame(Total=c(79037022, 83100656, 104299800)))
Pay attention on the model. The next two commands are similar, but for predict function, the first work the second don't work.
model <- lm(Coupon ~ Total, data=df) #Ok
model <- lm(df$Coupon ~ df$Total) #Ko
An updated solution using numpy v1.13+ requires specifying the axis in np.unique if using multiple columns, otherwise the array is implicitly flattened.
import numpy as np
np.unique(df[['col1', 'col2']], axis=0)
This change was introduced Nov 2016: https://github.com/numpy/numpy/commit/1f764dbff7c496d6636dc0430f083ada9ff4e4be
Full Example (Python 3):
For Python 2.x look into Note below
import re
mylist = ["dog", "cat", "wildcat", "thundercat", "cow", "hooo"]
r = re.compile(".*cat")
newlist = list(filter(r.match, mylist)) # Read Note
print(newlist)
Prints:
['cat', 'wildcat', 'thundercat']
Note:
For Python 2.x developers, filter
returns a list already. In Python 3.x filter
was changed to return an iterator so it has to be converted to list
(in order to see it printed out nicely).
<html>
<head>
<script>
function putText() {
var simpleText = "hello_world";
var finalSplitText = simpleText.split("_");
var splitText = finalSplitText[0];
document.getElementById("destination").innerHTML = "I need the value of " + splitText + " variable here";
}
</script>
</head>
<body onLoad = putText()>
<a id="destination" href = test.html>I need the value of "splitText" variable here</a>
</body>
</html>
l = [1,2,3,4,5]
sum = 0
for x in l:
sum = sum + x
And you can change l for any list you want.
Use IndexOf is easier and high performance.
int index = Value1.IndexOf("abc");
bool found = index >= 0 && index < x;
Update 2013: This code is obsolescent. Upvote bsb's late-coming answer instead.
I don't need to uninstall modules often, but the .packlist
file based approach has never failed me so far.
use 5.010;
use ExtUtils::Installed qw();
use ExtUtils::Packlist qw();
die "Usage: $0 Module::Name Module::Name\n" unless @ARGV;
for my $mod (@ARGV) {
my $inst = ExtUtils::Installed->new;
foreach my $item (sort($inst->files($mod))) {
say "removing $item";
unlink $item or warn "could not remove $item: $!\n";
}
my $packfile = $inst->packlist($mod)->packlist_file;
print "removing $packfile\n";
unlink $packfile or warn "could not remove $packfile: $!\n";
}
Request.Redirect(url,false);
false
indicates whether execution of current page should terminate.
Note that find . -type f | xargs grep whatever
sorts of solutions will run into "Argument list to long" errors when there are too many files matched by find.
The best bet is grep -r
but if that isn't available, use find . -type f -exec grep -H whatever {} \;
instead.
The latest and supposedly greatest way to construct the XML is by using LINQ to XML:
using System.Xml.Linq
var xmlNode =
new XElement("Login",
new XElement("id",
new XAttribute("userName", "Tushar"),
new XAttribute("password", "Tushar"),
new XElement("Name", "Tushar"),
new XElement("Age", "24")
)
);
xmlNode.Save("Tushar.xml");
Supposedly this way of coding should be easier, as the code closely resembles the output (which Jon's example above does not). However, I found that while coding this relatively easy example I was prone to lose my way between the cartload of comma's that you have to navigate among. Visual studio's auto spacing of code does not help either.
Here is code for Multiple Client to one Server Working Fine .. Give it a try :)
Server.java:
import java.io.DataInputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.logging.Level;
import java.util.logging.Logger;
class Multi extends Thread{
private Socket s=null;
DataInputStream infromClient;
Multi() throws IOException{
}
Multi(Socket s) throws IOException{
this.s=s;
infromClient = new DataInputStream(s.getInputStream());
}
public void run(){
String SQL=new String();
try {
SQL = infromClient.readUTF();
} catch (IOException ex) {
Logger.getLogger(Multi.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("Query: " + SQL);
try {
System.out.println("Socket Closing");
s.close();
} catch (IOException ex) {
Logger.getLogger(Multi.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public class Server {
public static void main(String args[]) throws IOException,
InterruptedException{
while(true){
ServerSocket ss=new ServerSocket(11111);
System.out.println("Server is Awaiting");
Socket s=ss.accept();
Multi t=new Multi(s);
t.start();
Thread.sleep(2000);
ss.close();
}
}
}
Client1.java:
import java.io.DataOutputStream;
import java.io.ObjectInputStream;
import java.net.Socket;
public class client1 {
public static void main(String[] arg) {
try {
Socket socketConnection = new Socket("127.0.0.1", 11111);
//QUERY PASSING
DataOutputStream outToServer = new DataOutputStream(socketConnection.getOutputStream());
String SQL="I am client 1";
outToServer.writeUTF(SQL);
} catch (Exception e) {System.out.println(e); }
}
}
Client2.java
import java.io.DataOutputStream;
import java.net.Socket;
public class client2 {
public static void main(String[] arg) {
try {
Socket socketConnection = new Socket("127.0.0.1", 11111);
//QUERY PASSING
DataOutputStream outToServer = new DataOutputStream(socketConnection.getOutputStream());
String SQL="I am Client 2";
outToServer.writeUTF(SQL);
} catch (Exception e) {System.out.println(e); }
}
}
In Fujimoto Youichi's example test01
is a container, whereas test02
is an image.
Before doing docker run
you can remove the original container and then assign the container the same name again:
$ docker stop container01
$ docker commit container01 image01
$ docker rm container01
$ docker run -d -P --name container01 image01
(Using -P
to expose ports to random ports rather than manually assigning).
For Angular 6 check the Official documentation
Note: For @angular/cli
versions older than 6.0.0-beta.6
use ng set
in place of ng config
.
In an existing angular-cli project that was set up with the default css
styles you will need to do a few things:
scss
Manually change in
.angular-cli.json
(Angular 5.x and older) orangular.json
(Angular 6+) or run:ng config defaults.styleExt=scss
if you get an error: Value cannot be found.
use the command:
ng config schematics.@schematics/angular:component.styleext scss
(*source: Angular CLI SASS options)
Rename your existing .css
files to .scss
(i.e. styles.css and app/app.component.css)
Point the CLI to find styles.scss
Manually change the file extensions in
apps[0].styles
inangular.json
Change the
styleUrls
in your components to match your new file names
As @Serginho mentioned you can set the style extension when running the ng new
command
ng new your-project-name --style=scss
If you want to set the default for all projects you create in the future run the following command:
ng config --global defaults.styleExt=scss
A query string carries textual data so there is no option but to explode the array, encode it correctly and pass it in a representational format of your choice:
p1=value1&pN=valueN...
data=[value1,...,valueN]
data={p1:value1,...,pN:valueN}
and then decode it in your server side code.
Code to add audio to video using ffmpeg.
If audio length is greater than video length it will cut the audio to video length. If you want full audio in video remove -shortest from the cmd.
String[] cmd = new String[]{"-i", selectedVideoPath,"-i",audiopath,"-map","1:a","-map","0:v","-codec","copy", ,outputFile.getPath()};
private void execFFmpegBinaryShortest(final String[] command) {
final File outputFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/videoaudiomerger/"+"Vid"+"output"+i1+".mp4");
String[] cmd = new String[]{"-i", selectedVideoPath,"-i",audiopath,"-map","1:a","-map","0:v","-codec","copy","-shortest",outputFile.getPath()};
try {
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onFailure(String s) {
System.out.println("on failure----"+s);
}
@Override
public void onSuccess(String s) {
System.out.println("on success-----"+s);
}
@Override
public void onProgress(String s) {
//Log.d(TAG, "Started command : ffmpeg "+command);
System.out.println("Started---"+s);
}
@Override
public void onStart() {
//Log.d(TAG, "Started command : ffmpeg " + command);
System.out.println("Start----");
}
@Override
public void onFinish() {
System.out.println("Finish-----");
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// do nothing for now
System.out.println("exceptio :::"+e.getMessage());
}
}
It is as easy as specifying a padding bottom the same size as the width in percent. So if you have a width of 50%, just use this example below
id or class{
width: 50%;
padding-bottom: 50%;
}
Here is a jsfiddle http://jsfiddle.net/kJL3u/2/
Edited version with responsive text: http://jsfiddle.net/kJL3u/394
You want to make filter dynamic then you have to use Lambda like
from django.db.models import Q
brands = ['ABC','DEF' , 'GHI']
queryset = Product.objects.filter(reduce(lambda x, y: x | y, [Q(brand=item) for item in brands]))
reduce(lambda x, y: x | y, [Q(brand=item) for item in brands])
is equivalent to
Q(brand=brands[0]) | Q(brand=brands[1]) | Q(brand=brands[2]) | .....
Turns out you don't have to do much at all.
See below - the parameter x
will contain the full HTTP body (which is XML in our case).
@POST
public Response go(String x) throws IOException {
...
}
FYI - if you are importing a List into a JSP, chances are pretty good that you are violating MVC principles. Take a few hours now to read up on the MVC approach to web app development (including use of taglibs) - do some more googling on the subject, it's fascinating and will definitely help you write better apps.
If you are doing anything more complicated than a single JSP displaying some database results, please consider using a framework like Spring, Grails, etc... It will absolutely take you a bit more effort to get going, but it will save you so much time and effort down the road that I really recommend it. Besides, it's cool stuff :-)
Or simple try:
> sudo easy_install MySQL-python
If it gives a error like below:
EnvironmentError: mysql_config not found
, then just run this
> export PATH=$PATH:/usr/local/mysql/bin
Here is one possible flex-based solution (SCSS):
dl {
display: flex;
flex-wrap: wrap;
width: 100%;
dt {
width: 150px;
}
dd {
margin: 0;
flex: 1 0 calc(100% - 150px);
}
}
that works for the following HTML (pug)
dl
dt item 1
dd desc 1
dt item 2
dd desc 2
If you are using Webpack > 3 then you only need to install babel-preset-env
, since this preset accounts for es2015, es2016 and es2017.
var path = require('path');
let webpack = require("webpack");
module.exports = {
entry: {
app: './app/App.js',
vendor: ["react","react-dom"]
},
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, '../public')
},
module: {
rules: [{
test: /\.jsx?$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader?cacheDirectory=true',
}
}]
}
};
This picks up its configuration from my .babelrc
file:
{
"presets": [
[
"env",
{
"targets": {
"browsers":["last 2 versions"],
"node":"current"
}
}
],["react"]
]
}
I think I got what I was looking for..
data.train <- read.table("Assign2.WineComplete.csv",sep=",",header=T)
fit <- rpart(quality ~ ., method="class",data=data.train)
plot(fit)
text(fit, use.n=TRUE)
summary(fit)
What you're looking for is componentWillMount
.
From the documentation:
Invoked once, both on the client and server, immediately before the initial rendering occurs. If you call
setState
within this method,render()
will see the updated state and will be executed only once despite the state change.
So you would do something like this:
componentWillMount : function () {
var data = this.getData();
this.setState({data : data});
},
This way, render()
will only be called once, and you'll have the data you're looking for in the initial render.
Remember, 2D array
is not a 2D array
in real sense.Every element of an array in itself is an array, not necessarily of the same size.
so, nir[0].length
may or may not be equal to nir[1].length
or nir[2]length
.
Hope that helps..:)
Try this
git config user.name
git config command stores and gives all the information.
git config -l
This commands gives you all the required info that you want.
You can change the information using
git config --global user.name "<Your-name>"
Similarly you can change many info shown to you using -l
option.
Following is working for me... put all of your IPs you want to telnet in IP_sheet.txt
while true
read a
do
{
sleep 3
echo df -kh
sleep 3
echo exit
} | telnet $a
done<IP_sheet.txt
onMeasure()
is your opportunity to tell Android how big you want your custom view to be dependent the layout constraints provided by the parent; it is also your custom view's opportunity to learn what those layout constraints are (in case you want to behave differently in a match_parent
situation than a wrap_content
situation). These constraints are packaged up into the MeasureSpec
values that are passed into the method. Here is a rough correlation of the mode values:
layout_width
or layout_height
value was set to a specific value. You should probably make your view this size. This can also get triggered when match_parent
is used, to set the size exactly to the parent view (this is layout dependent in the framework).layout_width
or layout_height
value was set to match_parent
or wrap_content
where a maximum size is needed (this is layout dependent in the framework), and the size of the parent dimension is the value. You should not be any larger than this size.layout_width
or layout_height
value was set to wrap_content
with no restrictions. You can be whatever size you would like. Some layouts also use this callback to figure out your desired size before determine what specs to actually pass you again in a second measure request.The contract that exists with onMeasure()
is that setMeasuredDimension()
MUST be called at the end with the size you would like the view to be. This method is called by all the framework implementations, including the default implementation found in View
, which is why it is safe to call super
instead if that fits your use case.
Granted, because the framework does apply a default implementation, it may not be necessary for you to override this method, but you may see clipping in cases where the view space is smaller than your content if you do not, and if you lay out your custom view with wrap_content
in both directions, your view may not show up at all because the framework doesn't know how large it is!
Generally, if you are overriding View
and not another existing widget, it is probably a good idea to provide an implementation, even if it is as simple as something like this:
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int desiredWidth = 100;
int desiredHeight = 100;
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
int width;
int height;
//Measure Width
if (widthMode == MeasureSpec.EXACTLY) {
//Must be this size
width = widthSize;
} else if (widthMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
width = Math.min(desiredWidth, widthSize);
} else {
//Be whatever you want
width = desiredWidth;
}
//Measure Height
if (heightMode == MeasureSpec.EXACTLY) {
//Must be this size
height = heightSize;
} else if (heightMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
height = Math.min(desiredHeight, heightSize);
} else {
//Be whatever you want
height = desiredHeight;
}
//MUST CALL THIS
setMeasuredDimension(width, height);
}
Hope that Helps.
I would start with something simple, like a Koch Snowflake. It's a simple process of taking a line and transforming it, then repeating the process recursively until it looks neat-o.
Something super simple like taking 2 points (a line) and adding a 3rd point (making a corner), then repeating on each new section that's created.
fractal(p0, p1){
Pmid = midpoint(p0,p1) + moved some distance perpendicular to p0 or p1;
fractal(p0,Pmid);
fractal(Pmid, p1);
}
You can solve this for Internet Explorer 8 by (ab)using the gradient syntax. The color format is ARGB. If you are using the Sass preprocessor you can convert colors using the built-in function "ie-hex-str()".
background: rgba(0,0,0, 0.5);
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#80000000')";
The link you gave does actually describe the differences, but it's buried at the bottom of the page:
http://www.cplusplus.com/reference/cstdio/fopen/
Text files are files containing sequences of lines of text. Depending on the environment where the application runs, some special character conversion may occur in input/output operations in text mode to adapt them to a system-specific text file format. Although on some environments no conversions occur and both text files and binary files are treated the same way, using the appropriate mode improves portability.
The conversion could be to normalize \r\n
to \n
(or vice-versa), or maybe ignoring characters beyond 0x7F (a-la 'text mode' in FTP). Personally I'd open everything in binary-mode and use a good text-encoding library for dealing with text.
Tested in IE9, and latest Firefox and Chrome and also supported in IE8.
document.onreadystatechange = function () {
var state = document.readyState;
if (state == 'interactive') {
init();
} else if (state == 'complete') {
initOnCompleteLoad();
}
}?;
Example: http://jsfiddle.net/electricvisions/Jacck/
UPDATE - reusable version
I have just developed the following. It's a rather simplistic equivalent to jQuery or Dom ready without backwards compatibility. It probably needs further refinement. Tested in latest versions of Chrome, Firefox and IE (10/11) and should work in older browsers as commented on. I'll update if I find any issues.
window.readyHandlers = [];
window.ready = function ready(handler) {
window.readyHandlers.push(handler);
handleState();
};
window.handleState = function handleState () {
if (['interactive', 'complete'].indexOf(document.readyState) > -1) {
while(window.readyHandlers.length > 0) {
(window.readyHandlers.shift())();
}
}
};
document.onreadystatechange = window.handleState;
Usage:
ready(function () {
// your code here
});
It's written to handle async loading of JS but you might want to sync load this script first unless you're minifying. I've found it useful in development.
Modern browsers also support async loading of scripts which further enhances the experience. Support for async means multiple scripts can be downloaded simultaneously all while still rendering the page. Just watch out when depending on other scripts loaded asynchronously or use a minifier or something like browserify to handle dependencies.
null
is a legal value (and reserved word) in JSON, but some environments do not have a "NULL" object (as opposed to a NULL
value) and hence cannot accurately represent the JSON null
. So they will sometimes represent it as an empty array.
Whether null
is a legal value in that particular element of that particular API is entirely up to the API designer.
Microsoft Outlook 2002 and above removes "extra line breaks" from text messages by default (kb308319). That is, Outlook seems to simply ignore line feed and/or carriage return sequences in text messages, running all of the lines together.
This can cause problems if you're trying to write code that will automatically generate an email message to be read by someone using Outlook.
For example, suppose you want to supply separate pieces of information each on separate lines for clarity, like this:
Transaction needs attention!
PostedDate: 1/30/2009
Amount: $12,222.06
TransID: 8gk288g229g2kg89
PostalCode: 91543
Your Outlook recipient will see the information all smashed together, as follows:
Transaction needs attention! PostedDate: 1/30/2009 Amount: $12,222.06 TransID: 8gk288g229g2kg89 ZipCode: 91543
There doesn't seem to be an easy solution. Alternatives are:
Or simply use
ng-show="v.hasOwnProperty('secId')"
See updated solution here:
If you want they to be paragraph, then use it.
<p><label for="id1">label1:</label> <input type="text" id="id1"/></p>
<p><label for="id2">label2:</label> <input type="text" id="id2"/></p>
Both <label>
and <input>
are paragraph and flow content so you can insert as paragraph elements and as block elements.
You should have enough space for array1
array and use something like strcat
to contact array1
to array2
:
char array1[BIG_ENOUGH];
char array2[X];
/* ...... */
/* check array bounds */
/* ...... */
strcat(array1, array2);
The following should do the trick:
div[class^='myclass'], div[class*=' myclass']{
color: #F00;
}
Edit: Added wildcard (*
) as suggested by David
With six
module, you can do it by:
import six
if six.PY2:
# this is python2.x
else:
# six.PY3
# this is python3.x
If mongodb is installed via Homebrew the default location is:
/usr/local/var/mongodb
See the answer from @simonbogarde for the location of other interesting files that are different when using Homebrew.
for (var j = 0; j <= data.legth -1; j++) {
lang += data.lang +", " ;
}
var langs = lang.split(',')
console.log("Languages =>", lang, typeof(lang), typeof(langs), langs)
console.log(lang[0]) // here access arrary by index value
you can see the type of string and object
Here is a list of available builds for debian: https://github.com/nodesource/distributions/tree/master/deb
For this example, lets assume you want version 14 (LTS at the time of writing)
We can download this script from github, execute it and install the version of node we want. For security reasons it's a good idea to read the script prior to executing it.
curl -sL https://raw.githubusercontent.com/nodesource/distributions/master/deb/setup_14.x | bash
apt-get install -y nodejs # may or may not require sudo based on your setup
I like this approach because it doesn't require extraneous dependencies like nvm to target specific versions
If you are building for a different distro or architecture you can find more builds here https://nodejs.org/dist/
You need to add a new service for DBcontext
in the startup
Default
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(
Configuration.GetConnectionString("DefaultConnection")));
Add this
services.AddDbContext<NewDBContext>(options =>
options.UseSqlServer(
Configuration.GetConnectionString("NewConnection")));
An optional prefix
!
which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources.
http://schacon.github.com/git/gitignore.html
*.json
!spec/*.json
Each tablespace has one or more datafiles that it uses to store data.
The max size of a datafile depends on the block size of the database. I believe that, by default, that leaves with you with a max of 32gb per datafile.
To find out if the actual limit is 32gb, run the following:
select value from v$parameter where name = 'db_block_size';
Compare the result you get with the first column below, and that will indicate what your max datafile size is.
I have Oracle Personal Edition 11g r2 and in a default install it had an 8,192 block size (32gb per data file).
Block Sz Max Datafile Sz (Gb) Max DB Sz (Tb)
-------- -------------------- --------------
2,048 8,192 524,264
4,096 16,384 1,048,528
8,192 32,768 2,097,056
16,384 65,536 4,194,112
32,768 131,072 8,388,224
You can run this query to find what datafiles you have, what tablespaces they are associated with, and what you've currrently set the max file size to (which cannot exceed the aforementioned 32gb):
select bytes/1024/1024 as mb_size,
maxbytes/1024/1024 as maxsize_set,
x.*
from dba_data_files x
MAXSIZE_SET is the maximum size you've set the datafile to. Also relevant is whether you've set the AUTOEXTEND option to ON (its name does what it implies).
If your datafile has a low max size or autoextend is not on you could simply run:
alter database datafile 'path_to_your_file\that_file.DBF' autoextend on maxsize unlimited;
However if its size is at/near 32gb an autoextend is on, then yes, you do need another datafile for the tablespace:
alter tablespace system add datafile 'path_to_your_datafiles_folder\name_of_df_you_want.dbf' size 10m autoextend on maxsize unlimited;
For python 3 use this
inp = list(map(int,input().split()))
#input => java is a programming language
#return as => ("java","is","a","programming","language")
input() accepts a string from STDIN.
split()
splits the string about whitespace character and returns a list of strings.
map()
passes each element of the 2nd argument to the first argument and returns a map object
Finally list()
converts the map to a list
If it were me, I would simply create a new Controller with a Single Action and then use RenderAction in place of Partial:
// Assuming the controller is named NewController
@{Html.RenderAction("ActionName",
"New",
new { routeValueOne = "SomeValue" });
}
OK I am using the wrong syntax, I should be using
Allow from 127.0.0.1
Allow from ::1
...
Remove all breakpoints and re-add them.
You can use $(":disabled")
to select all disabled items in the current context.
To determine whether a single item is disabled you can use $("#textbox1").is(":disabled")
.
You have a bad table design. You can't autoincrement a string, that doesn't make any sense. You have basically two options:
1.) change type of ID to int
instead of string
2.) not recommended!!! - handle autoincrement by yourself. You first need to get the latest value from the database, parse it to the integer, increment it and attach it to the entity as a string again. VERY BAD idea
First option requires to change every table that has a reference to this table, BUT it's worth it.
These days, the most popular (and very simple) option is the ElementTree API, which has been included in the standard library since Python 2.5.
The available options for that are:
Here's an example of how to generate your example document using the in-stdlib cElementTree:
import xml.etree.cElementTree as ET
root = ET.Element("root")
doc = ET.SubElement(root, "doc")
ET.SubElement(doc, "field1", name="blah").text = "some value1"
ET.SubElement(doc, "field2", name="asdfasd").text = "some vlaue2"
tree = ET.ElementTree(root)
tree.write("filename.xml")
I've tested it and it works, but I'm assuming whitespace isn't significant. If you need "prettyprint" indentation, let me know and I'll look up how to do that. (It may be an LXML-specific option. I don't use the stdlib implementation much)
For further reading, here are some useful links:
As a final note, either cElementTree or LXML should be fast enough for all your needs (both are optimized C code), but in the event you're in a situation where you need to squeeze out every last bit of performance, the benchmarks on the LXML site indicate that:
public bool IsCollection<T>(T value){
var valueType = value.GetType();
return valueType.IsArray() || typeof(IEnumerable<object>).IsAssignableFrom(valueType) || typeof(IEnumerable<T>).IsAssignableFrom(valuetype);
}
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class ErrorDialog {
public static void main(String argv[]) {
String message = "\"The Comedy of Errors\"\n"
+ "is considered by many scholars to be\n"
+ "the first play Shakespeare wrote";
JOptionPane.showMessageDialog(new JFrame(), message, "Dialog",
JOptionPane.ERROR_MESSAGE);
}
}
You can use the following script:
var findclasses = _doc.DocumentNode.Descendants("div").Where(d =>
d.Attributes.Contains("class") && d.Attributes["class"].Value.Contains("float")
);
In your function check for the keycode 8 (backspace) or 46 (delete)
To sum values in data.frame
you first need to extract them as a vector.
There are several way to do it:
# $ operatior
x <- people$Weight
x
# [1] 65 70 64
Or using [, ]
similar to matrix:
x <- people[, 'Weight']
x
# [1] 65 70 64
Once you have the vector you can use any vector-to-scalar function to aggregate the result:
sum(people[, 'Weight'])
# [1] 199
If you have NA values in your data, you should specify na.rm
parameter:
sum(people[, 'Weight'], na.rm = TRUE)
Another way:
Checkout the branch you want to revert, then reset your local working copy back to the commit that you want to be the latest one on the remote server (everything after it will go bye-bye). To do this, in SourceTree, I right-clicked on the and selected "Reset BRANCHNAME to this commit".
Then navigate to your repository's local directory and run this command:
git -c diff.mnemonicprefix=false -c core.quotepath=false push -v -f -- tags REPOSITORY_NAME BRANCHNAME:BRANCHNAME
This will erase all commits after the current one in your local repository but only for that one branch.
There is the "Compare" plugin. You can install it via Plugins > Plugin Manager.
Alternatively you can install a specialized file compare software like WinMerge.
simple is the best and works in every version.
if a>10:
value="b"
else:
value="c"
you can use this one in onCreateView, you can use transaction or replace
OnBackPressedCallback callback = new OnBackPressedCallback(true) {
@Override
public void handleOnBackPressed() {
//what you want to do
}
};
requireActivity().getOnBackPressedDispatcher().addCallback(this, callback);
[a-zA-Z]
should do that just fine.
You can reference the cheat sheet.
Here's a simple method which :
SELECT
TEST_TABLE.*,
CASE WHEN
TRANSLATE(TEST_TABLE.TEST_COLUMN, 'a.,0123456789', 'a') IS NULL
THEN 'Y'
ELSE 'N'
END
AS IS_NUMERIC
FROM
(
-- DUMMY TEST TABLE
(SELECT '1' AS TEST_COLUMN FROM DUAL) UNION
(SELECT '1,000.00' AS TEST_COLUMN FROM DUAL) UNION
(SELECT 'xyz1' AS TEST_COLUMN FROM DUAL) UNION
(SELECT 'xyz 123' AS TEST_COLUMN FROM DUAL) UNION
(SELECT '.,' AS TEST_COLUMN FROM DUAL)
) TEST_TABLE
Result:
TEST_COLUMN IS_NUMERIC
----------- ----------
., Y
1 Y
1,000.00 Y
xyz 123 N
xyz1 N
5 rows selected.
Granted this might not be the most powerful method of all; for example ".," is falsely identified as a numeric. However it is quite simple and fast and it might very well do the job, depending on the actual data values that need to be processed.
For integers, we can simplify the Translate operation as follows :
TRANSLATE(TEST_TABLE.TEST_COLUMN, 'a0123456789', 'a') IS NULL
How it works
From the above, note the Translate
function's syntax is TRANSLATE(string, from_string, to_string)
. Now the Translate
function cannot accept NULL
as the to_string
argument.
So by specifying 'a0123456789'
as the from_string
and 'a'
as the to_string
, two things happen:
a
is left alone;0
to 9
are replaced with nothing since no replacement is specified for them in the to_string
.In effect the numbers are discarded. If the result of that operation is NULL
it means it was purely numbers to begin with.
Do you want it to match "(b)"? Do as Zitrax and Paolo have suggested. Do you want it to match "b"? Do
>>> x = "a (b) c (d) e"
>>> re.search(r"\((.*?)\)", x).group(1)
'b'
One way:
SELECT DISTINCT sc.StoreId
FROM StoreClients sc
WHERE NOT EXISTS(
SELECT * FROM StoreClients sc2
WHERE sc2.StoreId = sc.StoreId AND sc2.ClientId = 5)
Probably something like this if it's the text part you want...
from xml.dom.minidom import parse
dom = parse("C:\\eve.xml")
name = dom.getElementsByTagName('name')
print " ".join(t.nodeValue for t in name[0].childNodes if t.nodeType == t.TEXT_NODE)
The text part of a node is considered a node in itself placed as a child-node of the one you asked for. Thus you will want to go through all its children and find all child nodes that are text nodes. A node can have several text nodes; eg.
<name>
blabla
<somestuff>asdf</somestuff>
znylpx
</name>
You want both 'blabla' and 'znylpx'; hence the " ".join(). You might want to replace the space with a newline or so, or perhaps by nothing.
You can try using string replace:
string = string.replace('\r', '').replace('\n', '')
Android uses the Roboto font, which is a really nice looking font, with several different weights (regular, light, thin, condensed) that look great on high density screens.
Check below link to check roboto fonts:
How to use Roboto in xml layout
Back to your question, if you want to change the font for all of the TextView/Button in your app, try adding below code into your styles.xml to use Roboto-light font:
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
......
<item name="android:buttonStyle">@style/MyButton</item>
<item name="android:textViewStyle">@style/MyTextView</item>
</style>
<style name="MyButton" parent="@style/Widget.AppCompat.Button">
<item name="android:textAllCaps">false</item>
<item name="android:fontFamily">sans-serif-light</item>
</style>
<style name="MyTextView" parent="@style/TextAppearance.AppCompat">
<item name="android:fontFamily">sans-serif-light</item>
</style>
And don't forget to use 'AppTheme' in your AndroidManifest.xml
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
......
</application>
Kibana is also a good solution. It is a data visualization platform for Elastic.If installed it runs by default on port 5601.
Out of the many things it provides. It has "Dev Tools" where we can do your debugging.
For example you can check your available indexes here using the command
GET /_cat/indices
var startTime = new TimeSpan(6, 0, 0); // 6:00 AM
var endTime = new TimeSpan(5, 30, 0); // 5:30 AM
var hours24 = new TimeSpan(24, 0, 0);
var difference = endTime.Subtract(startTime); // (-00:30:00)
difference = (difference.Duration() != difference) ? hours24.Subtract(difference.Duration()) : difference; // (23:30:00)
can also add difference between the dates if we compare two different dates
new TimeSpan(24 * days, 0, 0)
when reimporting your keys from the old keyring, you need to specify the command:
gpg --allow-secret-key-import --import <keyring>
otherwise it will only import the public keys, not the private keys.
You are calling DoDownloadAsync() but you don't wait it. So your program going to the next line. But there is another problem, Async methods should return Task
or Task<T>
, if you return nothing and you want your method will be run asyncronously you should define your method like this:
private static async Task DoDownloadAsync() { WebClient w = new WebClient(); string txt = await w.DownloadStringTaskAsync("http://www.google.com/"); Debug.WriteLine(txt); }
And in Main method you can't await for DoDownloadAsync
, because you can't use await keyword in non-async function, and you can't make Main
async. So consider this:
var result = DoDownloadAsync(); Debug.WriteLine("DoDownload done"); result.Wait();
Using overloads or using C# 4.0 or above
private void GetVal(string sName, int sRoll)
{
if (sRoll > 0)
{
// do some work
}
}
private void GetVal(string sName)
{
GetVal("testing", 0);
}
Simply call window.frameElement
from your framed page.
If the page is not in a frame then frameElement
will be null
.
The other way (getting the window element inside a frame is less trivial) but for sake of completeness:
/**
* @param f, iframe or frame element
* @return Window object inside the given frame
* @effect will append f to document.body if f not yet part of the DOM
* @see Window.frameElement
* @usage myFrame.document = getFramedWindow(myFrame).document;
*/
function getFramedWindow(f)
{
if(f.parentNode == null)
f = document.body.appendChild(f);
var w = (f.contentWindow || f.contentDocument);
if(w && w.nodeType && w.nodeType==9)
w = (w.defaultView || w.parentWindow);
return w;
}
Just use \t
to space it.
Example:
System.out.println(monthlyInterest + "\t")
//as far as the two 0 in front of it just use a if else statement. ex:
x = x+1;
if (x < 10){
System.out.println("00" +x);
}
else if( x < 100){
System.out.println("0" +x);
}
else{
System.out.println(x);
}
There are other ways to do it, but this is the simplest.
You can also try use "doctor" command. It will fix most cases.
npx @react-native-community/cli doctor
Same, I needed to update a 'contrib' folder:
I my case too the problem was due to deleted .svn folders.
Solved.
By default, inheritance is private. You have to explicitly use public
:
class Bar : public Foo
You can use the TelephonyManager
to do this:
TelephonyManager tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String number = tm.getLine1Number();
The documentation for getLine1Number()
says this method will return null
if the number is "unavailable", but it does not say when the number might be unavailable.
You'll need to give your application permission to make this query by adding the following to your Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
(You shouldn't use TelephonyManager.getDefault()
to get the TelephonyManager
as that is a private undocumented API call and may change in future.)
You want reorder()
. Here is an example with dummy data
set.seed(42)
df <- data.frame(Category = sample(LETTERS), Count = rpois(26, 6))
require("ggplot2")
p1 <- ggplot(df, aes(x = Category, y = Count)) +
geom_bar(stat = "identity")
p2 <- ggplot(df, aes(x = reorder(Category, -Count), y = Count)) +
geom_bar(stat = "identity")
require("gridExtra")
grid.arrange(arrangeGrob(p1, p2))
Giving:
Use reorder(Category, Count)
to have Category
ordered from low-high.
You can list the attributes of a object with dir() in the shell:
>>> dir(object())
['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
Of course, there is also the inspect module: http://docs.python.org/library/inspect.html#module-inspect
This regex matches pretty much every mac format including Cisco format such as 0102-0304-abcd
^([[:xdigit:]]{2}[:.-]?){5}[[:xdigit:]]{2}$
Example strings which it matches:
01:02:03:04:ab:cd
01-02-03-04-ab-cd
01.02.03.04.ab.cd
0102-0304-abcd
01020304abcd
Mixed format will be matched also!
It's impossible to say without seeing your actual code. Likely the reason is a code path through your function that doesn't execute a return
statement. When the code goes down that path, the function ends with no value returned, and so returns None
.
Updated: It sounds like your code looks like this:
def b(self, p, data):
current = p
if current.data == data:
return True
elif current.data == 1:
return False
else:
self.b(current.next, data)
That else clause is your None
path. You need to return the value that the recursive call returns:
else:
return self.b(current.next, data)
BTW: using recursion for iterative programs like this is not a good idea in Python. Use iteration instead. Also, you have no clear termination condition.
There is an example in the launcher app of Android (that I've made a library out of it, here), inside the class that handles wallpapers-picking ("WallpaperPickerActivity") .
The example shows that you need to set a customized theme for this to work. Sadly, this worked for me only using the normal framework, and not the one of the support library.
Here're the themes:
styles.xml
<style name="Theme.WallpaperPicker" parent="Theme.WallpaperCropper">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:colorBackgroundCacheHint">@null</item>
<item name="android:windowShowWallpaper">true</item>
</style>
<style name="Theme.WallpaperCropper" parent="@android:style/Theme.DeviceDefault">
<item name="android:actionBarStyle">@style/WallpaperCropperActionBar</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowActionBarOverlay">true</item>
</style>
<style name="WallpaperCropperActionBar" parent="@android:style/Widget.DeviceDefault.ActionBar">
<item name="android:displayOptions">showCustom</item>
<item name="android:background">#88000000</item>
</style>
value-v19/styles.xml
<style name="Theme.WallpaperCropper" parent="@android:style/Theme.DeviceDefault">
<item name="android:actionBarStyle">@style/WallpaperCropperActionBar</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowActionBarOverlay">true</item>
<item name="android:windowTranslucentNavigation">true</item>
</style>
<style name="Theme" parent="@android:style/Theme.DeviceDefault.Wallpaper.NoTitleBar">
<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowTranslucentNavigation">true</item>
</style>
EDIT: there is a better way to do it, which works on the support library too. Just add this line of code instead of what I've written above:
getSupportActionBar().setDisplayShowCustomEnabled(true);
No Yes, using the File API in newer browsers. See TJ's answer for details.
If you need to support older browsers as well, you will have to use a Flash-based uploader like SWFUpload or Uploadify to do this.
The SWFUpload Features Demo shows how the file_size_limit
setting works.
Note that this (obviously) needs Flash, plus the way it works is a bit different from normal upload forms.
The Task.Run
got introduced in newer .NET framework version and it is recommended.
Starting with the .NET Framework 4.5, the Task.Run method is the recommended way to launch a compute-bound task. Use the StartNew method only when you require fine-grained control for a long-running, compute-bound task.
The Task.Factory.StartNew
has more options, the Task.Run
is a shorthand:
The Run method provides a set of overloads that make it easy to start a task by using default values. It is a lightweight alternative to the StartNew overloads.
And by shorthand I mean a technical shortcut:
public static Task Run(Action action)
{
return Task.InternalStartNew(null, action, null, default(CancellationToken), TaskScheduler.Default,
TaskCreationOptions.DenyChildAttach, InternalTaskOptions.None, ref stackMark);
}
@CemKalyoncu: Thanks for the great answer!
I also adapted it slightly to make it more like the Array.splice method (and took @Ates' note into consideration):
spliceString=function(string, index, numToDelete, char) {
return string.substr(0, index) + char + string.substr(index+numToDelete);
}
var myString="hello world!";
spliceString(myString,myString.lastIndexOf('l'),2,'mhole'); // "hello wormhole!"
The reject
actually takes one parameter: that's the exception that occurred in your code that caused the promise to be rejected. So, when you call reject()
the exception value is undefined
, hence the "undefined" part in the error that you get.
You do not show the code that uses the promise, but I reckon it is something like this:
var promise = doSth();
promise.then(function() { doSthHere(); });
Try adding an empty failure call, like this:
promise.then(function() { doSthHere(); }, function() {});
This will prevent the error to appear.
However, I would consider calling reject
only in case of an actual error, and also... having empty exception handlers isn't the best programming practice.
I have same issue ... at http://www.xaluan.com .. but after log. I find out that after jQuery run I make a function using one element id which not exists ..
Eg:
$('#aaa').remove() <span class="aaa">sss</spam>
so the id="aaa"
did not exist .. then jQuery stops running.. because errors like that
As of Java 11 one can use Pattern#asMatchPredicate
which returns Predicate<String>
.
String string = "stores%store%product";
String regex = "stores.*store.*product.*";
Predicate<String> matchesRegex = Pattern.compile(regex).asMatchPredicate();
boolean match = matchesRegex.test(string); // true
The method enables chaining with other String predicates, which is the main advantage of this method as long as the Predicate
offers and
, or
and negate
methods.
String string = "stores$store$product";
String regex = "stores.*store.*product.*";
Predicate<String> matchesRegex = Pattern.compile(regex).asMatchPredicate();
Predicate<String> hasLength = s -> s.length() > 20;
boolean match = hasLength.and(matchesRegex).test(string); // false
DELIMITER $$
DROP FUNCTION IF EXISTS `split_name`$$
CREATE FUNCTION split_name (p_fullname TEXT, p_part INTEGER)
RETURNS TEXT
READS SQL DATA
BEGIN
DECLARE v_words INT UNSIGNED;
DECLARE v_name TEXT;
SET p_fullname=RTRIM(LTRIM(p_fullname));
SET v_words=(SELECT SUM(LENGTH(p_fullname) - LENGTH(REPLACE(p_fullname, ' ', ''))+1));
IF v_words=1 THEN
IF p_part=1 THEN
SET v_name=p_fullname;
ELSEIF p_part=2 THEN
SET v_name=NULL;
ELSEIF p_part=3 THEN
SET v_name=NULL;
ELSE
SET v_name=NULL;
END IF;
ELSEIF v_words=2 THEN
IF p_part=1 THEN
SET v_name=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
ELSEIF p_part=2 THEN
SET v_name=SUBSTRING(p_fullname, LOCATE(' ', p_fullname) + 1);
ELSEIF p_part=3 THEN
SET v_name=NULL;
ELSE
SET v_name=NULL;
END IF;
ELSEIF v_words=3 THEN
IF p_part=1 THEN
SET v_name=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
ELSEIF p_part=2 THEN
SET p_fullname=SUBSTRING(p_fullname, LOCATE(' ', p_fullname) + 1);
SET v_name=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
ELSEIF p_part=3 THEN
SET p_fullname=REVERSE (SUBSTRING(p_fullname, LOCATE(' ', p_fullname) + 1));
SET p_fullname=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
SET v_name=REVERSE(p_fullname);
ELSE
SET v_name=NULL;
END IF;
ELSEIF v_words>3 THEN
IF p_part=1 THEN
SET v_name=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
ELSEIF p_part=2 THEN
SET p_fullname=REVERSE(SUBSTRING(p_fullname, LOCATE(' ', p_fullname) + 1));
SET p_fullname=SUBSTRING(p_fullname, LOCATE(' ', p_fullname,SUBSTRING_INDEX(p_fullname,' ',1)+1) + 1);
SET v_name=REVERSE(p_fullname);
ELSEIF p_part=3 THEN
SET p_fullname=REVERSE (SUBSTRING(p_fullname, LOCATE(' ', p_fullname) + 1));
SET p_fullname=SUBSTRING(p_fullname, 1, LOCATE(' ', p_fullname) - 1);
SET v_name=REVERSE(p_fullname);
ELSE
SET v_name=NULL;
END IF;
ELSE
SET v_name=NULL;
END IF;
RETURN v_name;
END;
SELECT split_name('Md. Obaidul Haque Sarker',1) AS first_name,
split_name('Md. Obaidul Haque Sarker',2) AS middle_name,
split_name('Md. Obaidul Haque Sarker',3) AS last_name
Upper div use higher z-index and lower div use lower z-index then use absolute/fixed/relative position
Add the code snippet in JS file used in master page or used globally.
<script language="javascript">
if (typeof browseris !== 'undefined') {
browseris.ie = false;
}
</script>
For more information refer blog: http://blogs2share.blogspot.in/2016/11/object-doesnt-support-property-or.html
I appreciate this is a very old question but I thought I would add another answer for future users as all the answers to date use some form of Assembly.GetTypes
.
Whilst GetTypes() will indeed return all types, it does not necessarily mean you could activate them and could thus potentially throw a ReflectionTypeLoadException
.
A classic example for not being able to activate a type would be when the type returned is derived
from base
but base
is defined in a different assembly from that of derived
, an assembly that the calling assembly does not reference.
So say we have:
Class A // in AssemblyA
Class B : Class A, IMyInterface // in AssemblyB
Class C // in AssemblyC which references AssemblyB but not AssemblyA
If in ClassC
which is in AssemblyC
we then do something as per accepted answer:
var type = typeof(IMyInterface);
var types = AppDomain.CurrentDomain.GetAssemblies()
.SelectMany(s => s.GetTypes())
.Where(p => type.IsAssignableFrom(p));
Then it will throw a ReflectionTypeLoadException
.
This is because without a reference to AssemblyA
in AssemblyC
you would not be able to:
var bType = typeof(ClassB);
var bClass = (ClassB)Activator.CreateInstance(bType);
In other words ClassB
is not loadable which is something that the call to GetTypes checks and throws on.
So to safely qualify the result set for loadable types then as per this Phil Haacked article Get All Types in an Assembly and Jon Skeet code you would instead do something like:
public static class TypeLoaderExtensions {
public static IEnumerable<Type> GetLoadableTypes(this Assembly assembly) {
if (assembly == null) throw new ArgumentNullException("assembly");
try {
return assembly.GetTypes();
} catch (ReflectionTypeLoadException e) {
return e.Types.Where(t => t != null);
}
}
}
And then:
private IEnumerable<Type> GetTypesWithInterface(Assembly asm) {
var it = typeof (IMyInterface);
return asm.GetLoadableTypes().Where(it.IsAssignableFrom).ToList();
}
Your closing your instance of the settings window right after you create it. You need to display the settings window first then wait for a dialog result. If it comes back as canceled then close the window. For Example:
private void button1_Click(object sender, EventArgs e)
{
Settings newSettingsWindow = new Settings();
if (newSettingsWindow.ShowDialog() == DialogResult.Cancel)
{
newSettingsWindow.Close();
}
}
You may need two or more loops depending on your array:
$arr[$key1][$key2][$key3]=$value1; // ....etc
foreach ($arr as $key1 => $values) {
foreach ($key1 as $key2 => $value) {
unset($arr[$key1][$key2]);
}
}
I kept having problems with this, the only solution was to add an image and label as subviews to the uibutton. Then I discovered that the main problem was that I was using a UIButton with title: Attributed. When I changed it to Plain, just setting the titleLabel.text did the trick!
var startDate = "06/27/2007";
startDate = new Date(startDate);
console.log(startDate);
Use IPython display to render PIL images in a notebook.
from PIL import Image # to load images
from IPython.display import display # to display images
pil_im = Image.open('path/to/image.jpg')
display(pil_im)
// Returns bottom offset value + or - from viewport top
function offsetBottom(el, i) { i = i || 0; return $(el)[i].getBoundingClientRect().bottom }
// Returns right offset value
function offsetRight(el, i) { i = i || 0; return $(el)[i].getBoundingClientRect().right }
var bottom = offsetBottom('#logo');
var right = offsetRight('#logo');
This will find the distance from the top and left of your viewport to your element's exact edge and nothing beyond that. So say your logo was 350px and it had a left margin of 50px, variable 'right' will hold a value of 400 because that's the actual distance in pixels it took to get to the edge of your element, no matter if you have more padding or margin to the right of it.
If your box-sizing CSS property is set to border-box it will continue to work just as if it were set as the default content-box.
To sort in ascending order :
Collections.sort(lList);
And for reverse order :
Collections.reverse(lList);
Expanding on Adis H's example to include the null case (got bit on this one)
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
if (config.AppSettings.Settings["HostName"] != null)
config.AppSettings.Settings["HostName"].Value = hostName;
else
config.AppSettings.Settings.Add("HostName", hostName);
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");
That's the way to do that: Using OAuth 2.0 for Login.
You may use other authentication methods other then Google's as long as it supports OAuth.
There is an usage scenario where you might need this. I'm not implying there are not better ways or achieving the same functionality.
This would be useful in order to 'dump' an arbitrary list of dictionaries in case of error, in debug modes and other similar situations.
What would be needed, is the reverse of the eval()
function:
get_indentifier_name_missing_function()
which would take an identifier name ('variable','dictionary',etc) as an argument, and return a string containing the identifier’s name.
Consider the following current state of affairs:
random_function(argument_data)
If one is passing an identifier name ('function','variable','dictionary',etc) argument_data
to a random_function()
(another identifier name), one actually passes an identifier (e.g.: <argument_data object at 0xb1ce10>
) to another identifier (e.g.: <function random_function at 0xafff78>
):
<function random_function at 0xafff78>(<argument_data object at 0xb1ce10>)
From my understanding, only the memory address is passed to the function:
<function at 0xafff78>(<object at 0xb1ce10>)
Therefore, one would need to pass a string as an argument to random_function()
in order for that function to have the argument's identifier name:
random_function('argument_data')
Inside the random_function()
def random_function(first_argument):
, one would use the already supplied string 'argument_data'
to:
serve as an 'identifier name' (to display, log, string split/concat, whatever)
feed the eval()
function in order to get a reference to the actual identifier, and therefore, a reference to the real data:
print("Currently working on", first_argument)
some_internal_var = eval(first_argument)
print("here comes the data: " + str(some_internal_var))
Unfortunately, this doesn't work in all cases. It only works if the random_function()
can resolve the 'argument_data'
string to an actual identifier. I.e. If argument_data
identifier name is available in the random_function()
's namespace.
This isn't always the case:
# main1.py
import some_module1
argument_data = 'my data'
some_module1.random_function('argument_data')
# some_module1.py
def random_function(first_argument):
print("Currently working on", first_argument)
some_internal_var = eval(first_argument)
print("here comes the data: " + str(some_internal_var))
######
Expected results would be:
Currently working on: argument_data
here comes the data: my data
Because argument_data
identifier name is not available in the random_function()
's namespace, this would yield instead:
Currently working on argument_data
Traceback (most recent call last):
File "~/main1.py", line 6, in <module>
some_module1.random_function('argument_data')
File "~/some_module1.py", line 4, in random_function
some_internal_var = eval(first_argument)
File "<string>", line 1, in <module>
NameError: name 'argument_data' is not defined
Now, consider the hypotetical usage of a get_indentifier_name_missing_function()
which would behave as described above.
Here's a dummy Python 3.0 code: .
# main2.py
import some_module2
some_dictionary_1 = { 'definition_1':'text_1',
'definition_2':'text_2',
'etc':'etc.' }
some_other_dictionary_2 = { 'key_3':'value_3',
'key_4':'value_4',
'etc':'etc.' }
#
# more such stuff
#
some_other_dictionary_n = { 'random_n':'random_n',
'etc':'etc.' }
for each_one_of_my_dictionaries in ( some_dictionary_1,
some_other_dictionary_2,
...,
some_other_dictionary_n ):
some_module2.some_function(each_one_of_my_dictionaries)
# some_module2.py
def some_function(a_dictionary_object):
for _key, _value in a_dictionary_object.items():
print( get_indentifier_name_missing_function(a_dictionary_object) +
" " +
str(_key) +
" = " +
str(_value) )
######
Expected results would be:
some_dictionary_1 definition_1 = text_1
some_dictionary_1 definition_2 = text_2
some_dictionary_1 etc = etc.
some_other_dictionary_2 key_3 = value_3
some_other_dictionary_2 key_4 = value_4
some_other_dictionary_2 etc = etc.
......
......
......
some_other_dictionary_n random_n = random_n
some_other_dictionary_n etc = etc.
Unfortunately, get_indentifier_name_missing_function()
would not see the 'original' identifier names (some_dictionary_
,some_other_dictionary_2
,some_other_dictionary_n
). It would only see the a_dictionary_object
identifier name.
Therefore the real result would rather be:
a_dictionary_object definition_1 = text_1
a_dictionary_object definition_2 = text_2
a_dictionary_object etc = etc.
a_dictionary_object key_3 = value_3
a_dictionary_object key_4 = value_4
a_dictionary_object etc = etc.
......
......
......
a_dictionary_object random_n = random_n
a_dictionary_object etc = etc.
So, the reverse of the eval()
function won't be that useful in this case.
Currently, one would need to do this:
# main2.py same as above, except:
for each_one_of_my_dictionaries_names in ( 'some_dictionary_1',
'some_other_dictionary_2',
'...',
'some_other_dictionary_n' ):
some_module2.some_function( { each_one_of_my_dictionaries_names :
eval(each_one_of_my_dictionaries_names) } )
# some_module2.py
def some_function(a_dictionary_name_object_container):
for _dictionary_name, _dictionary_object in a_dictionary_name_object_container.items():
for _key, _value in _dictionary_object.items():
print( str(_dictionary_name) +
" " +
str(_key) +
" = " +
str(_value) )
######
eval()
function if the name identifier is available in the current namespace.eval()
function, would not be useful in cases where the identifier name is not 'seen' directly by the calling code. E.g. inside any called function.This can be achieved by passing both the 'string'
and eval('string')
to the called function at the same time. I think this is the most 'general' way of solving this egg-chicken problem across arbitrary functions, modules, namespaces, without using corner-case solutions. The only downside is the use of the eval()
function which may easily lead to unsecured code. Care must be taken to not feed the eval()
function with just about anything, especially unfiltered external-input data.
In Rails 4 all I had to do was the def change
def change
rename_table :old_table_name, :new_table_name
end
And all of my indexes were taken care of for me. I did not need to manually update the indexes by removing the old ones and adding new ones.
And it works using the change for going up or down in regards to the indexes as well.
Just a few more points to make thing clear,
One must not confuse data abstraction and the abstract class. They are different.
Generally we say abstract class or method is to basically hide something. But no.. That is wrong. What is the word abstract means ? Google search says the English word abstraction means
"Existing in thought or as an idea but not having a physical or concrete existence."
And thats right in case of abstract class too. It is not hiding the content of the method but the method's content is already empty (not having a physical or concrete existence) but it determines how a method should be (existing in thought or as an idea) or a method should be in the calss.
So when do you actually use abstract methods ?
So about abstract class! - An Abstract class cannot be instantiated only extended! But why ?
An Abstract class help us avoid creating new instance of it!
An abstract method in a class forces the child class to implement that function for sure with the provided signature!
read
with IFS
are perfect for this:
$ IFS=- read var1 var2 <<< ABCDE-123456
$ echo "$var1"
ABCDE
$ echo "$var2"
123456
Edit:
Here is how you can read each individual character into array elements:
$ read -a foo <<<"$(echo "ABCDE-123456" | sed 's/./& /g')"
Dump the array:
$ declare -p foo
declare -a foo='([0]="A" [1]="B" [2]="C" [3]="D" [4]="E" [5]="-" [6]="1" [7]="2" [8]="3" [9]="4" [10]="5" [11]="6")'
If there are spaces in the string:
$ IFS=$'\v' read -a foo <<<"$(echo "ABCDE 123456" | sed 's/./&\v/g')"
$ declare -p foo
declare -a foo='([0]="A" [1]="B" [2]="C" [3]="D" [4]="E" [5]=" " [6]="1" [7]="2" [8]="3" [9]="4" [10]="5" [11]="6")'
ex.split(',', 2).last
The 2 at the end says: split into 2 pieces, not more.
normally split will cut the value into as many pieces as it can, using a second value you can limit how many pieces you will get. Using ex.split(',', 2)
will give you:
["test1", "test2, test3, test4, test5"]
as an array, instead of:
["test1", "test2", "test3", "test4", "test5"]
You can create a winform project in VS2005/ VS2008 and then change its properties to be a command line application. It can then be started from the command line, but will still open a winform.
Missing space between elif
and [
rest your program is correct. you need to correct it an check it out. here is fixed program:
#!/bin/bash
if [ "$seconds" -eq 0 ]; then
timezone_string="Z"
elif [ "$seconds" -gt 0 ]; then
timezone_string=$(printf "%02d:%02d" $((seconds/3600)) $(((seconds / 60) % 60)))
else
echo "Unknown parameter"
fi
useful link related to this bash if else statement
You're very close. What you need to remember is when you're calling a method from another class you need to tell the compiler where to find that method.
So, instead of simply calling addWord("someWord")
, you will need to initialise an instance of the WordList class (e.g. WordList list = new WordList();
), and then call the method using that (i.e. list.addWord("someWord");
.
However, your code at the moment will still throw an error there, because that would be trying to call a non-static method from a static one. So, you could either make addWord()
static, or change the methods in the Words class so that they're not static.
My bad with the above paragraph - however you might want to reconsider ProcessInput()
being a static method - does it really need to be?
$("...").attr("required"); and $("...").removeAttr("required");
didn't work for me until I putted all my jQuery code between that:
$(document).ready(function() {
//jQuery code goes here
});
Replace all commas with underscore in the column names
data.columns= data.columns.str.replace(' ','_',regex=True)
In the future one would use left: unset;
for unsetting the value of left.
As of today 4 nov 2014 unset
is only supported in Firefox.
My guess is we'll be able to use it around year 2022 when IE 11 is properly phased out.
'&' --> '&'
'<' --> '<'
'>' --> '>'
You need either
A foreign key needs to uniquely identify the parent row: you currently have no way to do that because Title is not unique.
your using this
in a function, when you should be using the parameter.
You only use $(this) in callbacks... from selections like
$('a').click(function() {
alert($(this).href);
})
In closing, the proper way (using your code example) would be to do this
obj.attr('id');
List<int> orginalList =new List<int>(){1,2,3,4,5,6,7,8,9,10,12};
Dictionary<int,List<int>> dic = new Dictionary <int,List<int>> ();
int batchcount = orginalList.Count/2; //To List into two 2 parts if you
want three give three
List<int> lst = new List<int>();
for (int i=0;i<orginalList.Count; i++)
{
lst.Add(orginalList[i]);
if (i % batchCount == 0 && i!=0)
{
Dic.Add(threadId, lst);
lst = new List<int>();**strong text**
threadId++;
}
}
if(lst.Count>0)
Dic.Add(threadId, lst); //in case if any dayleft
foreach(int BatchId in Dic.Keys)
{
Console.Writeline("BatchId:"+BatchId);
Console.Writeline('Batch Count:"+Dic[BatchId].Count);
}
The easy way: Pick an alternative Color Scheme:
Preferences > Color Scheme > ...pick one
The more complicated way: Edit the current color scheme file:
Preferences > Browse Packages > Color Scheme - Default > ... edit the Color Scheme file you are using:
Looking at the structure of the XML, drill down into dict > settings > settings > dict >
Look for the key (or add it if it's missing): lineHighlight
. Add a string with an #RRGGBB
or #RRGGBBAA
format.
print my_string[0:100]
You can do it using merge_all
in the reshape
package. You can pass parameters to merge
using the ...
argument
reshape::merge_all(list_of_dataframes, ...)
Here is an excellent resource on different methods to merge data frames.
Just change
C:\Users\Giacomo B\AppData\Local\Android\sdk
to
C:\Users\Giacomo_B\AppData\Local\Android\sdk
The issue appears with parsing the JSON from request body, tipical for an invalid JSON. If you're using curl on windows, try escaping the json like -d "{"name":"value"}"
or even -d "{"""name""":"value"""}"
On the other hand you can ommit the content-type header in which case whetewer is sent will be converted to your String argument
Just to reiterate what has been posted for other shells, in Bash the following works:
alias blah='function _blah(){ echo "First: $1"; echo "Second: $2"; };_blah'
Running the following:
blah one two
Gives the output below:
First: one
Second: two
You can use the MsiEnumProductsEx and MsiGetProductInfoEx methods to enumerate all the installed applications on your system and match the data to your application
If you do not mind the items being imutable you can use the Tuple class added to .net 4
var list = new List<Tuple<string,int>>();
list.Add(new Tuple<string,int>("hello", 1));
list[0].Item1 //Hello
list[0].Item2 //1
However if you are adding two items every time and one of them is unique id you can use a Dictionary
Fairly old question but incase someone goes back.
This isn't as compact as the other answers above, but fairly readable and easier to type using Visual Studio Multi-Line selection shortcut [Alt+ Shift + ?] (or other directions)
string Camnr = string.Empty;
string Klantnr = string.Empty;
Type out all variable names on new lines. Multi-Select in front of them an type "string". Multi-Select behind them and type "= string.Empty;".
Tony, your script is ok, but if you have 100 files? Need add this code in all these :
include_once('scripts.php');
strip_php_extension();
I think you include a menu in each php file (probably your menu is showed in all your web pages), so you can add these 2 lines of code only in your menu file. This work for me :D
I know this is a very old thread but just incase someone like myself needs this solution but in VB.NET here's what I used base on the answers above.
Private Function ValidateUniquePayroll(PropertyToCheck As String) As Boolean
// Return true if Username is Unique
Dim rtnValue = False
Dim context = New CPMModel.CPMEntities
If (context.Employees.Any()) Then ' Check if there are "any" records in the Employee table
Dim employee = From c In context.Employees Select c.PayrollNumber ' Select just the PayrollNumber column to work with
For Each item As Object In employee ' Loop through each employee in the Employees entity
If (item = PropertyToCheck) Then ' Check if PayrollNumber in current row matches PropertyToCheck
// Found a match, throw exception and return False
rtnValue = False
Exit For
Else
// No matches, return True (Unique)
rtnValue = True
End If
Next
Else
// The is currently no employees in the person entity so return True (Unqiue)
rtnValue = True
End If
Return rtnValue
End Function
Here's a code snippet that fixes that behavior of IE (v['date'] is a comma separated date-string, e.g. "2010,4,1"):
if($.browser.msie){
$.lst = v['date'].split(',');
$.tmp = new Date(parseInt($.lst[0]),parseInt($.lst[1])-1,parseInt($.lst[2]));
} else {
$.tmp = new Date(v['date']);
}
The previous approach didn't consider that JS Date month is ZERO based...
Sorry for not explaining too much, I'm at work and just thought this might help.
If you happen to be using numpy (with import numpy as np
):
In [24]: x
Out[24]: array([1, 2, 3, 4, 5])
In [25]: np.dot(x, 10**np.arange(len(x)-1, -1, -1))
Out[25]: 12345
There are many ways to filter for element ancestors.
if ($elem.closest('.parentClass').length /* > 0*/) {/*...*/}
if ($elem.parents('.parentClass').length /* > 0*/) {/*...*/}
if ($elem.parents().hasClass('parentClass')) {/*...*/}
if ($('.parentClass').has($elem).length /* > 0*/) {/*...*/}
if ($elem.is('.parentClass *')) {/*...*/}
Beware, closest()
method includes element itself while checking for selector.
Alternatively, if you have a unique selector matching the $elem
, e.g #myElem
, you can use:
if ($('.parentClass:has(#myElem)').length /* > 0*/) {/*...*/}
if(document.querySelector('.parentClass #myElem')) {/*...*/}
If you want to match an element depending any of its ancestor class for styling purpose only, just use a CSS rule:
.parentClass #myElem { /* CSS property set */ }
select <column list> into <table name> from <source> where <whereclause>
Adding a unique item to a another list
searchResults: [
{
name: 'Hello',
artist: 'Selana',
album: 'Riga',
id: 1,
},
{
name: 'Hello;s',
artist: 'Selana G',
album: 'Riga1',
id: 2,
},
{
name: 'Hello2',
artist: 'Selana',
album: 'Riga11',
id: 3,
}
],
playlistTracks: [
{
name: 'Hello',
artist: 'Mamunuus',
album: 'Riga',
id: 4,
},
{
name: 'Hello;s',
artist: 'Mamunuus G',
album: 'Riga1',
id: 2,
},
{
name: 'Hello2',
artist: 'Mamunuus New',
album: 'Riga11',
id: 3,
}
],
playlistName: "New PlayListTrack",
};
}
// Adding an unique track in the playList
addTrack = track => {
if(playlistTracks.find(savedTrack => savedTrack.id === track.id)) {
return;
}
playlistTracks.push(track);
this.setState({
playlistTracks
})
};
I always use:
__location__ = os.path.realpath(
os.path.join(os.getcwd(), os.path.dirname(__file__)))
The join()
call prepends the current working directory, but the documentation says that if some path is absolute, all other paths left of it are dropped. Therefore, getcwd()
is dropped when dirname(__file__)
returns an absolute path.
Also, the realpath
call resolves symbolic links if any are found. This avoids troubles when deploying with setuptools on Linux systems (scripts are symlinked to /usr/bin/
-- at least on Debian).
You may the use the following to open up files in the same folder:
f = open(os.path.join(__location__, 'bundled-resource.jpg'))
# ...
I use this to bundle resources with several Django application on both Windows and Linux and it works like a charm!
With ES6 you can use rest parameters for varagrs
. This takes the argument list and converts it to an array.
function logArgs(...args) {
console.log(args.length)
for(let arg of args) {
console.log(arg)
}
}
You should put the parameter gravity to bottom not in the textview but in the Linear Layout. Like this:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="bottom|end">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Something"/>
</LinearLayout>
To a kill a specific port in Linux use below command
sudo fuser -k Port_Number/tcp
replace Port_Number with your occupied port.
Once the file object is iterated, it is exausted.
>>> f = open('1.txt', 'w')
>>> f.write('1\n2\n3\n')
>>> f.close()
>>> f = open('1.txt', 'r')
>>> for line in f: print line
...
1
2
3
# exausted, another iteration does not produce anything.
>>> for line in f: print line
...
>>>
Use file.seek
(or close/open the file) to rewind the file:
>>> f.seek(0)
>>> for line in f: print line
...
1
2
3
nvm was designed for Linux. nvmw, which is completely different broke around node v0.10.30. Try NVM for Windows.
Use the start
command with the /b
flag to run a command/application without opening a new window. For example, this runs dotnet run
in the background:
start /b dotnet run
You can pass parameters to the command/application too. For example, I'm starting 3 instances of this C# project, with parameter values of x
, y
, and z
:
CTRL + BREAK
In my experience, this stops all of the background commands/programs you have started in that cmd
instance.
According to the Microsoft docs:
CTRL+C handling is ignored unless the application enables CTRL+C processing. Use CTRL+BREAK to interrupt the application.
For people running Android Studio
and Eclipse
:
I know that answers are already saturated, but I'll just add that it appears that this error surfaces after installing Android Studio and returning to Eclipse to build and run your project.
Make sure you close all other instances of ADB that may be running (including Android Studio). Once you've done this if you are still having troubles try killing all ADB server processes and restarting. If you haven't setup a global variable, open terminal and navigate to the platform-tools folder of the Android SDK Eclipse is referencing, then run:
./adb kill-server
./adb start-server
Use this:
double start = 400;
double end = 402;
double random = new Random().nextDouble();
double result = start + (random * (end - start));
System.out.println(result);
EDIT:
new Random().nextDouble()
: randomly generates a number between 0 and 1.
start
: start number, to shift number "to the right"
end - start
: interval. Random gives you from 0% to 100% of this number, because random gives you a number from 0 to 1.
EDIT 2: Tks @daniel and @aaa bbb. My first answer was wrong.
I have seen all the options listed above and the only viable option to check wither the internet is available or not is the "Ping" option.
Importing [DllImport("Wininet.dll")]
and System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
Or any other variation of the NetworkInterface
class does not work well in detecting the availability of the network.These Methods only check if the network cable is plugged in or not.
The "Ping option"
if
(Connection is available) returns true
if
(Connection is not available and the network cable is plugged in) returns false
if
(Network cable is not plugged in) Throws an exception
The NetworkInterface
if
(Internet Is available)Returns True
if
(Internet is not Available and Network Cable is Plugged in ) Returns True
if
(Network Cable is Not Plugged in )returns false
The [DllImport("Wininet.dll")]
if
(Internet Is available)Returns True
if
(Internet is not Available and Network Cable is Plugged in ) Returns True
if
(Network Cable is Not Plugged in )returns false
So in case of [DllImport("Wininet.dll")]
and NetworkInterface
There is no way of knowing if internet connection is available.
You could do this:
if( ctrl[0].nodeName.toLowerCase() === 'input' ) {
// it was an input
}
or this, which is slower, but shorter and cleaner:
if( ctrl.is('input') ) {
// it was an input
}
If you want to be more specific, you can test the type:
if( ctrl.is('input:text') ) {
// it was an input
}
As a Mac user, I was unable to use the MS-DOS and Windows command line tools that were mentioned to fix the font embedding permission. However, I found out that you can fix this using FontLab to set the permission to 'Everything is allowed'. I hope this recipe on how to set the font permission to Installable on Mac OS X is useful for others as well.
<a href="/#/#faq-1">Question 1</a>
<a href="/#/#faq-2">Question 2</a>
<a href="/#/#faq-3">Question 3</a>
I suggest building an HttpWebRequest to programmatically execute your POST and then redirect after reading the Response if applicable.
Assuming you're fine with taking all of the changes in master, what you want is:
git checkout <my branch>
to switch the working tree to your branch; then:
git merge master
to merge all the changes in master with yours.
As seen in Install crontab on CentOS, the crontab package in CentOS is vixie-cron
. Hence, do install it with:
yum install vixie-cron
And then start it with:
service crond start
To make it persistent, so that it starts on boot, use:
chkconfig crond on
On CentOS 7 you need to use cronie
:
yum install cronie
On CentOS 6 you can install vixie-cron
, but the real package is cronie
:
yum install vixie-cron
and
yum install cronie
In both cases you get the same output:
.../...
==================================================================
Package Arch Version Repository Size
==================================================================
Installing:
cronie x86_64 1.4.4-12.el6 base 73 k
Installing for dependencies:
cronie-anacron x86_64 1.4.4-12.el6 base 30 k
crontabs noarch 1.10-33.el6 base 10 k
exim x86_64 4.72-6.el6 epel 1.2 M
Transaction Summary
==================================================================
Install 4 Package(s)
And for SBT : excludeDependencies += "log4j" % "log4j"
Use on your image bg
Vertical split
background-size: 50% 100%
Horizontal split
background-size: 100% 50%
Example
.class {
background-image: url("");
background-color: #fff;
background-repeat: no-repeat;
background-size: 50% 100%;
}
C or C++ will not check the bounds of an array access.
You are allocating the array on the stack. Indexing the array via array[3]
is equivalent to *(array + 3)
, where array is a pointer to &array[0]. This will result in undefined behavior.
One way to catch this sometimes in C is to use a static checker, such as splint. If you run:
splint +bounds array.c
on,
int main(void)
{
int array[1];
array[1] = 1;
return 0;
}
then you will get the warning:
array.c: (in function main) array.c:5:9: Likely out-of-bounds store: array[1] Unable to resolve constraint: requires 0 >= 1 needed to satisfy precondition: requires maxSet(array @ array.c:5:9) >= 1 A memory write may write to an address beyond the allocated buffer.
The way I am doing is using Emacs with docker
package installed. I would recommend Spacemacs version of Emacs. I would follow the following steps:
1) Install Emacs (Instruction) and install Spacemacs (Instruction)
2) Add docker
in your .spacemacs
file
3) Start Emacs
4) Find file (SPC+f+f
) and type /docker:<container-id>:/<path of dir/file in the container>
5) Now your emacs will use the container environment to edit the files