As far as I can see, you just added heredoc by mistake
No need to use ugly heredoc syntax here.
Just remove it and everything will work:
<p>Hello</p>
<p><?= _("World"); ?></p>
Useful to quickly print entries in a HashMap
System.out.println(Arrays.toString(map.entrySet().toArray()));
Below is the code for that (code may not contain all device's string, I'm with other guys are maintaining the same code on GitHub so please take the latest code from there)
Objective-C : GitHub/DeviceUtil
Swift : GitHub/DeviceGuru
#include <sys/types.h>
#include <sys/sysctl.h>
- (NSString*)hardwareDescription {
NSString *hardware = [self hardwareString];
if ([hardware isEqualToString:@"iPhone1,1"]) return @"iPhone 2G";
if ([hardware isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
if ([hardware isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
if ([hardware isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
if ([hardware isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
if ([hardware isEqualToString:@"iPod1,1"]) return @"iPodTouch 1G";
if ([hardware isEqualToString:@"iPod2,1"]) return @"iPodTouch 2G";
if ([hardware isEqualToString:@"iPad1,1"]) return @"iPad";
if ([hardware isEqualToString:@"iPad2,6"]) return @"iPad Mini";
if ([hardware isEqualToString:@"iPad4,1"]) return @"iPad Air WIFI";
//there are lots of other strings too, checkout the github repo
//link is given at the top of this answer
if ([hardware isEqualToString:@"i386"]) return @"Simulator";
if ([hardware isEqualToString:@"x86_64"]) return @"Simulator";
return nil;
}
- (NSString*)hardwareString {
size_t size = 100;
char *hw_machine = malloc(size);
int name[] = {CTL_HW,HW_MACHINE};
sysctl(name, 2, hw_machine, &size, NULL, 0);
NSString *hardware = [NSString stringWithUTF8String:hw_machine];
free(hw_machine);
return hardware;
}
I have a Range
class in MiscUtil which you could find useful. Combined with the various extension methods, you could do:
foreach (DateTime date in StartDate.To(EndDate).ExcludeEnd()
.Step(DayInterval.Days())
{
// Do something with the date
}
(You may or may not want to exclude the end - I just thought I'd provide it as an example.)
This is basically a ready-rolled (and more general-purpose) form of mquander's solution.
The main difference is
1.Constructor are used to initialize the state of object,where as method is expose the behaviour of object.
2.Constructor must not have return type where as method must have return type.
3.Constructor name same as the class name where as method may or may not the same class name.
4.Constructor invoke implicitly where as method invoke explicitly.
5.Constructor compiler provide default constructor where as method compiler does't provide.
Trying my part, simple, one liner, pythonic way using islice. But, may not be optimally efficient.
from itertools import islice
array = range(0, 10)
window_size = 4
map(lambda i: list(islice(array, i, i + window_size)), range(0, len(array) - window_size + 1))
# output = [[0, 1, 2, 3], [1, 2, 3, 4], [2, 3, 4, 5], [3, 4, 5, 6], [4, 5, 6, 7], [5, 6, 7, 8], [6, 7, 8, 9]]
Explanation: Create window by using islice of window_size and iterate this operation using map over all array.
ModelState.Values.SelectMany(v => v.Errors).ToList().ForEach(x => _logger.Error($"{x.ErrorMessage}\n"));
in one line
> samp.with.rownames <- data.frame(samp[,-1], row.names=samp[,1])
It works like this. View.OnClickListenere is defined -
public interface OnClickListener {
void onClick(View v);
}
As far as we know you cannot instantiate an object OnClickListener
, as it doesn't have a method implemented. So there are two ways you can go by - you can implement this interface which will override onClick
method like this:
public class MyListener implements View.OnClickListener {
@Override
public void onClick (View v) {
// your code here;
}
}
But it's tedious to do it each time as you want to set a click listener. So in order to avoid this you can provide the implementation for the method on spot, just like in an example you gave.
setOnClickListener
takes View.OnClickListener
as its parameter.
A small change to Paul's code so that it doesn't return the error mentioned above.
dat = melt(subset(iris, select = c("Sepal.Length","Sepal.Width", "Species")),
id.vars = "Species")
dat$x <- c(1:150, 1:150)
ggplot(aes(x = x, y = value, color = variable), data = dat) +
geom_point() + geom_line()
If you are coming from Microsoft Excel, the following functions will be similar to LEFT()
, RIGHT()
, and MID()
functions.
# This counts from the left and then extract n characters
str_left <- function(string, n) {
substr(string, 1, n)
}
# This counts from the right and then extract n characters
str_right <- function(string, n) {
substr(string, nchar(string) - (n - 1), nchar(string))
}
# This extract characters from the middle
str_mid <- function(string, from = 2, to = 5){
substr(string, from, to)
}
Examples:
x <- "some text in a string"
str_left(x, 4)
[1] "some"
str_right(x, 6)
[1] "string"
str_mid(x, 6, 9)
[1] "text"
Above answer can be considered to be confusing a little. String methods are not modifying original object. They return new object. It must be:
var str = "Sonic Free Games";
str = str.replace(/\s+/g, '-').toLowerCase(); //new object assigned to var str
Use Nesting column
To nest your content with the default grid, add a new .row and set of .col-sm-* columns within an existing .col-sm-* column. Nested rows should include a set of columns that add up to 12 or fewer (it is not required that you use all 12 available columns).
<div class="row">_x000D_
<div class="col-sm-9">_x000D_
Level 1: .col-sm-9_x000D_
<div class="row">_x000D_
<div class="col-xs-8 col-sm-6">_x000D_
Level 2: .col-xs-8 .col-sm-6_x000D_
</div>_x000D_
<div class="col-xs-4 col-sm-6">_x000D_
Level 2: .col-xs-4 .col-sm-6_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
It's as simple as is:
WebView webview = (WebView) findViewById(R.id.webview);
webview.loadUrl("file:///android_asset/some.html");
And your some.html needs to contain something like:
<link rel="stylesheet" type="text/css" href="style.css" />
while true ; do
...
if [ something ]; then
break
fi
done
I solved the problem by adding the following lines to the AppSettings section of my web.config file:
<add key="autoFormsAuthentication" value="false" />
<add key="enableSimpleMembership" value="false"/>
Here's an answer that works with codepoints outside of the Basic Multilingual Plane (Java 8+).
Using streams:
public String method(String str) {
return str.codePoints()
.limit(str.codePoints().count() - 1)
.mapToObj(i->new String(Character.toChars(i)))
.collect(Collectors.joining());
}
More efficient maybe:
public String method(String str) {
return str.isEmpty()? "": str.substring(0, str.length() - Character.charCount(str.codePointBefore(str.length())));
}
In case of float values with characters 'e' '+' it errors out if we try to convert in decimal. ('2.81104e+006'). It still pass ISNUMERIC test.
SELECT ISNUMERIC('2.81104e+006')
returns 1
.
SELECT convert(decimal(15,2), '2.81104e+006')
returns
error: Error converting data type varchar to numeric.
And
SELECT try_convert(decimal(15,2), '2.81104e+006')
returns NULL
.
SELECT convert(float, '2.81104e+006')
returns the correct value 2811040
.
This may not be a popular solution for everyone, but I like the Application Framework in Visual Basic, even when using C#.
Add a reference to Microsoft.VisualBasic
Create a class called WindowsFormsApplication
public class WindowsFormsApplication : WindowsFormsApplicationBase
{
/// <summary>
/// Runs the specified mainForm in this application context.
/// </summary>
/// <param name="mainForm">Form that is run.</param>
public virtual void Run(Form mainForm)
{
// set up the main form.
this.MainForm = mainForm;
// Example code
((Form1)mainForm).FileName = this.CommandLineArgs[0];
// then, run the the main form.
this.Run(this.CommandLineArgs);
}
/// <summary>
/// Runs this.MainForm in this application context. Converts the command
/// line arguments correctly for the base this.Run method.
/// </summary>
/// <param name="commandLineArgs">Command line collection.</param>
private void Run(ReadOnlyCollection<string> commandLineArgs)
{
// convert the Collection<string> to string[], so that it can be used
// in the Run method.
ArrayList list = new ArrayList(commandLineArgs);
string[] commandLine = (string[])list.ToArray(typeof(string));
this.Run(commandLine);
}
}
Modify your Main() routine to look like this
static class Program
{
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
var application = new WindowsFormsApplication();
application.Run(new Form1());
}
}
This method offers some additional usefull features (like SplashScreen support and some usefull events)
public event NetworkAvailableEventHandler NetworkAvailabilityChanged;d.
public event ShutdownEventHandler Shutdown;
public event StartupEventHandler Startup;
public event StartupNextInstanceEventHandler StartupNextInstance;
public event UnhandledExceptionEventHandler UnhandledException;
do url_raw.cast_to_raw()
support in oracle 6
This error, in my case, preceded by syntax error at find method of a list in IE11. so replaced find method by filter method as suggested https://github.com/flrs/visavail/issues/19
then above controller not defined error resolved.
You can actually still use ".css" and apply css transitions to the div being affected. So continue using ".css" and add the below styles to your stylesheet for "#hfont1". Since ".css" allows for a lot more properties than ".animate", this is always my preferred method.
#hfont1 {
-webkit-transition: width 0.4s;
transition: width 0.4s;
}
As the answer seems already been answered, there is not much to add but I would like to add one thing to the existing answers. This was the way of loading class for JDBC driver for mysql
com.mysql.jdbc.Driver
But this is deprecated now. The new driver class is now
com.mysql.cj.jdbc.Driver
Also the driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
An easy one as an extension method
public static class Extensions
{
public static Stream ConvertToBase64(this Stream stream)
{
byte[] bytes;
using (var memoryStream = new MemoryStream())
{
stream.CopyTo(memoryStream);
bytes = memoryStream.ToArray();
}
string base64 = Convert.ToBase64String(bytes);
return new MemoryStream(Encoding.UTF8.GetBytes(base64));
}
}
I solved this by doing the following:
<body class="container-fluid">
<div class="row">
<div class="span6" style="float: none; margin: 0 auto;">
....
</div>
</div>
</body>
.process-list:after{
content: "\2191";
position: absolute;
top:50%;
right:-8px;
background-color: #ea1f41;
width:35px;
height: 35px;
border:2px solid #ffffff;
border-radius: 5px;
color: #ffffff;
z-index: 10000;
-webkit-transform: rotate(50deg) translateY(-50%);
-moz-transform: rotate(50deg) translateY(-50%);
-ms-transform: rotate(50deg) translateY(-50%);
-o-transform: rotate(50deg) translateY(-50%);
transform: rotate(50deg) translateY(-50%);
}
you can check this code . i hope you will easily understand.
Don't try and do too much in one step. Keep each rule separate.
function validatePassword() {
var p = document.getElementById('newPassword').value,
errors = [];
if (p.length < 8) {
errors.push("Your password must be at least 8 characters");
}
if (p.search(/[a-z]/i) < 0) {
errors.push("Your password must contain at least one letter.");
}
if (p.search(/[0-9]/) < 0) {
errors.push("Your password must contain at least one digit.");
}
if (errors.length > 0) {
alert(errors.join("\n"));
return false;
}
return true;
}
The best way is from tkinter import *
I whipped up a quick (Jquery only) plugin, that saves the value in a data field while an input is disabled. This just means as long as the field is being disabled programmaticly through jquery using .prop() or .attr()... then accessing the value by .val(), .serialize() or .serializeArra() will always return the value even if disabled :)
Shameless plug: https://github.com/Jezternz/jq-disabled-inputs
I'd personally suggest using a different unit of measurement than px
. I don't think that pixels have much relevance in terms of print; ideally you'd use:
I'm sure there are others, and one excellent article about print-css can be found here: Going to Print, by Eric Meyer.
for the future strugglers, in python 3.8.2(and maybe a few versions before that), the syntax is
except Attribute as e:
print(e)
You can use the os/signal package to handle incoming signals. Ctrl+C is SIGINT, so you can use this to trap os.Interrupt
.
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func(){
for sig := range c {
// sig is a ^C, handle it
}
}()
The manner in which you cause your program to terminate and print information is entirely up to you.
Why not use title
Right from the docs:
>>> "they're bill's friends from the UK".title()
"They'Re Bill'S Friends From The Uk"
If you really wanted PascalCase you can use this:
>>> ''.join(x for x in 'make IT pascal CaSe'.title() if not x.isspace())
'MakeItPascalCase'
using XML, you need to set the onclick listener yourself. First have your class implements OnClickListener
then add the variable Button button1;
then add this to your onCreate()
button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(this);
when you implement OnClickListener you need to add the inherited method onClick()
where you will handle your clicks
I am using Dot.Net Core 3.1 and did an search for
"Newtonsoft.Json.JsonSerializationException: Self referencing loop detected for property "
I am adding this to this question, as it will be an easy reference. You should use the following in the Startup.cs file:
services.AddControllers()
.AddNewtonsoftJson(options =>
{
// Use the default property (Pascal) casing
options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});
You can specify a new column. You also need to compute the mean along the rows, so use axis=1
.
df['mean'] = df.mean(axis=1)
>>> df
Y1961 Y1962 Y1963 Y1964 Y1965 Region mean
0 82.567307 83.104757 83.183700 83.030338 82.831958 US 82.943612
1 2.699372 2.610110 2.587919 2.696451 2.846247 US 2.688020
2 14.131355 13.690028 13.599516 13.649176 13.649046 US 13.743824
3 0.048589 0.046982 0.046583 0.046225 0.051750 US 0.048026
4 0.553377 0.548123 0.582282 0.577811 0.620999 US 0.576518
String in java is immutable. So whenever a string is created, it will remain in the memory until it is garbage collected. So anyone who has access to the memory can read the value of the string.
If the value of the string is modified then it will end up creating a new string. So both the original value and the modified value stay in the memory until it is garbage collected.
With the character array, the contents of the array can be modified or erased once the purpose of the password is served. The original contents of the array will not be found in memory after it is modified and even before the garbage collection kicks in.
Because of the security concern it is better to store password as a character array.
you could either use
SELECT PARSENAME('$'+ Convert(varchar,Convert(money,@MoneyValue),1),2)
or
SELECT CurrencyNoDecimals = '$'+ LEFT( CONVERT(varchar, @MoneyValue,1),
LEN (CONVERT(varchar, @MoneyValue,1)) - 2)
Do you have the line
apply plugin: 'com.google.gms.google-services'
line at the bottom of your app's build.gradle file?
I saw some errors when it was on the top and as it's written here, it should be at the bottom.
I ran into this recently with no changes to source, but after experimenting with some new project references. I got into a state where this error was appearing even after reverting all changes in the branch.
Cleaning the branch resolved it for me:
git clean -xfd
Quoting the README at https://github.com/mhammond/pywin32:
By far the easiest way to use pywin32 is to grab binaries from the most recent release
Just download the installer for your version of Python from https://github.com/mhammond/pywin32/releases and run it, and you're done.
From the javadoc:
The serialization runtime associates with each serializable class a version number, called a
serialVersionUID
, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiver has loaded a class for the object that has a differentserialVersionUID
than that of the corresponding sender's class, then deserialization will result in anInvalidClassException
. A serializable class can declare its ownserialVersionUID
explicitly by declaring a field named"serialVersionUID"
that must be static, final, and of type long:
You can configure your IDE to:
As per your additional question "Can it be that the discussed warning message is a reason why my GUI application freeze?":
No, it can't be. It can cause a problem only if you are serializing objects and deserializing them in a different place (or time) where (when) the class has changed, and it will not result in freezing, but in InvalidClassException
.
I like to give the users a bit of flexibility and trust, that they will get the format right, but I do want to enforce only digits and two decimals for currency
^[$\-\s]*[\d\,]*?([\.]\d{0,2})?\s*$
Takes care of:
$ 1.
-$ 1.00
$ -1.0
.1
.10
-$ 1,000,000.0
Of course it will also match:
$$--$1,92,9,29.1 => anyway after cleanup => -192,929.10
Lets think your response is "successData". This contains a list which you need to add as options in a dropdown menu.
success: function (successData) {
var sizeOfData = successData.length;
if (sizeOfData == 0) {
// NO DATA, throw an alert ...
alert ("No Data Found");
} else {
$.each(successData, function(val, text) {
mySelect.append(
$('<option></option>').val(val).html(text)
);
});
} }
This would work for you ....
This is the stack trace of mentioned exception
at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6149)
at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:843)
at android.view.View.requestLayout(View.java:16474)
at android.view.View.requestLayout(View.java:16474)
at android.view.View.requestLayout(View.java:16474)
at android.view.View.requestLayout(View.java:16474)
at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:352)
at android.view.View.requestLayout(View.java:16474)
at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:352)
at android.view.View.setFlags(View.java:8938)
at android.view.View.setVisibility(View.java:6066)
So if you go and dig then you come to know
void checkThread() {
if (mThread != Thread.currentThread()) {
throw new CalledFromWrongThreadException(
"Only the original thread that created a view hierarchy can touch its views.");
}
}
Where mThread is initialize in constructor like below
mThread = Thread.currentThread();
All I mean to say that when we created particular view we created it on UI Thread and later try to modifying in a Worker Thread.
We can verify it via below code snippet
Thread.currentThread().getName()
when we inflate layout and later where you are getting exception.
Make sure you're not printing (echo or print) any text/data prior to generate your JSON formated data in your PHP file. That could explain that you get a -sucessfull 200 OK- but your sucess event still fails in your javascript. You can verify what your script is receiving by checking the section "Network - Answer" in firebug for the POST submit1.php.
In this simple way
char str [10] = "IAmCute";
printf ("%c",str[4]);
First you can write the code:
{ [self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];}
after that
{ #define cellHeight 80 // You can change according to your req.<br>
#define cellWidth 320 // You can change according to your req.<br>
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"seprater_line.png"]];
imgView.frame = CGRectMake(0, cellHeight, cellWidth, 1);
[customCell.contentView addSubview:imgView];
return customCell;
}
}
Deleting Host-only network helped me. 1. Open Virtual Box 2. File->Preferences-> Network 3. Select the Host-only network and remove it.
Now try starting the Genymotion.
Just try to add exit;
at the end of your PHP script.
It's not basic css, but if you're using LESS (http://lesscss.org), you can do this using recursion:
.hClass (@index) when (@index > 0) {
h@{index} {
font: 32px/42px trajan-pro-1,trajan-pro-2;
}
.hClass(@index - 1);
}
.hClass(6);
Sass (http://sass-lang.com) will allow you to manage this, but won't allow recursion; they have @for
syntax for these instances:
@for $index from 1 through 6 {
h#{$index}{
font: 32px/42px trajan-pro-1,trajan-pro-2;
}
}
If you're not using a dynamic language that compiles to CSS like LESS or Sass, you should definitely check out one of these options. They can really simplify and make more dynamic your CSS development.
I suspect you would just want to grab a few columns from V$SESSION and the SQL statement from V$SQL. Assuming you want to exclude the background processes that Oracle itself is running
SELECT sess.process, sess.status, sess.username, sess.schemaname, sql.sql_text
FROM v$session sess,
v$sql sql
WHERE sql.sql_id(+) = sess.sql_id
AND sess.type = 'USER'
The outer join is to handle those sessions that aren't currently active, assuming you want those. You could also get the sql_fulltext column from V$SQL which will have the full SQL statement rather than the first 1000 characters, but that is a CLOB and so likely a bit more complicated to deal with.
Realistically, you probably want to look at everything that is available in V$SESSION because it's likely that you can get a lot more information than SP_WHO provides.
There are three YAML capable packages. Syck (pip install syck
) which implements the YAML 1.0 specification from 2002; PyYAML (pip install pyyaml
) which follows the YAML 1.1 specification from 2004; and ruamel.yaml which follows the latest (YAML 1.2, from 2009) specification.
You can install the YAML 1.2 compatible package with pip install ruamel.yaml
or if you are running a modern version of Debian/Ubuntu (or derivative) with:
sudo apt-get install python-ruamel.yaml
This kind of error usually means that some parts of (JS) code were not loaded. That the state which is inside of ui-sref
is missing.
There is a working example
I am not an expert in ionic, so this example should show that it would be working, but I used some more tricks (parent for tabs)
This is a bit adjusted state def:
.config(function($stateProvider, $urlRouterProvider){
$urlRouterProvider.otherwise("/index.html");
$stateProvider
.state('app', {
abstract: true,
templateUrl: "tpl.menu.html",
})
$stateProvider.state('index', {
url: '/',
templateUrl: "tpl.index.html",
parent: "app",
});
$stateProvider.state('register', {
url: "/register",
templateUrl: "tpl.register.html",
parent: "app",
});
$urlRouterProvider.otherwise('/');
})
And here we have the parent view with tabs, and their content:
<ion-tabs class="tabs-icon-top">
<ion-tab title="Index" icon="icon ion-home" ui-sref="index">
<ion-nav-view name=""></ion-nav-view>
</ion-tab>
<ion-tab title="Register" icon="icon ion-person" ui-sref="register">
<ion-nav-view name=""></ion-nav-view>
</ion-tab>
</ion-tabs>
Take it more than an example of how to make it running and later use ionic framework the right way...Check that example here
Here is similar Q & A with an example using the named views (for sure better solution) ionic routing issue, shows blank page
Improved version with named views in a tab is here: http://plnkr.co/edit/Mj0rUxjLOXhHIelt249K?p=preview
<ion-tab title="Index" icon="icon ion-home" ui-sref="index">
<ion-nav-view name="index"></ion-nav-view>
</ion-tab>
<ion-tab title="Register" icon="icon ion-person" ui-sref="register">
<ion-nav-view name="register"></ion-nav-view>
</ion-tab>
targeting named views:
$stateProvider.state('index', {
url: '/',
views: { "index" : { templateUrl: "tpl.index.html" } },
parent: "app",
});
$stateProvider.state('register', {
url: "/register",
views: { "register" : { templateUrl: "tpl.register.html", } },
parent: "app",
});
This is plain Javascript and has nothing to do with the jQuery library.
You simply escape the apostrophe with a backslash:
theAnchorText = 'I\'m home';
Another alternative is to use quotation marks around the string, then you don't have to escape apostrophes:
theAnchorText = "I'm home";
I had the same problem... I had to run it as a user.
00 * * * * root /usr/bin/php /var/virtual/hostname.nz/public_html/cronjob.php
I think it would help your comprehension if you think of connect()
and listen()
as counterparts, rather than connect()
and bind()
. The reason for this is that you can call or omit bind()
before either, although it's rarely a good idea to call it before connect()
, or not to call it before listen()
.
If it helps to think in terms of servers and clients, it is listen()
which is the hallmark of the former, and connect()
the latter. bind()
can be found - or not found - on either.
If we assume our server and client are on different machines, it becomes easier to understand the various functions.
bind()
acts locally, which is to say it binds the end of the connection on the machine on which it is called, to the requested address and assigns the requested port to you. It does that irrespective of whether that machine will be a client or a server. connect()
initiates a connection to a server, which is to say it connects to the requested address and port on the server, from a client. That server will almost certainly have called bind()
prior to listen()
, in order for you to be able to know on which address and port to connect to it with using connect()
.
If you don't call bind()
, a port and address will be implicitly assigned and bound on the local machine for you when you call either connect()
(client) or listen()
(server). However, that's a side effect of both, not their purpose. A port assigned in this manner is ephemeral.
An important point here is that the client does not need to be bound, because clients connect to servers, and so the server will know the address and port of the client even though you are using an ephemeral port, rather than binding to something specific. On the other hand, although the server could call listen()
without calling bind()
, in that scenario they would need to discover their assigned ephemeral port, and communicate that to any client that it wants to connect to it.
I assume as you mention connect()
you're interested in TCP, but this also carries over to UDP, where not calling bind()
before the first sendto()
(UDP is connection-less) also causes a port and address to be implicitly assigned and bound. One function you cannot call without binding is recvfrom()
, which will return an error, because without an assigned port and bound address, there is nothing to receive from (or too much, depending on how you interpret the absence of a binding).
console
— contains many methods that you can call to perform rudimentary debugging tasks, generally focused around logging various values to the browser's Web Console.By far the most commonly-used method is
console.log
, which is used to log the current value contained inside a specific variable.
let myString = 'Hello World';
console.log(myString);
Also remember console
is a part of global window
object in the web browser. Thus the following is also technically correct but isn't used in practical scenario.
let myString = 'Hello World';
window.console.log(myString);
I suggest writing a little script and doing multiple searches with Grep. I've never found a way to search for multiple patterns, and believe me, I've looked!
Like so, your shell file, with an embedded string:
#!/bin/bash
grep *A6* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";
grep *A7* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";
grep *A8* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";
Then run by typing myshell.sh.
If you want to be able to pass in the string on the command line, do it like this, with a shell argument--this is bash notation btw:
#!/bin/bash
$stingtomatch = "${1}";
grep *A6* "${stingtomatch}";
grep *A7* "${stingtomatch}";
grep *A8* "${stingtomatch}";
And so forth.
If there are a lot of patterns to match, you can put it in a for loop.
Yes. Google Chrome has deprecated the feature in version 50. If you tried to use it in chrome the error is:
getCurrentPosition() and watchPosition() are deprecated on insecure origins. To use this feature, you should consider switching your application to a secure origin, such as HTTPS. See https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-powerful-features-on-insecure-origins for more details.
So, you have to add SSL certificate. Well, that's the only way.
And it's quite easy now using Let's Encrypt. Here's guide
And for testing purpose you could try this:
1.localhost is treated as a secure origin over HTTP, so if you're able to run your server from localhost, you should be able to test the feature on that server.
2.You can run chrome with the --unsafely-treat-insecure-origin-as-secure="http://example.com" flag (replacing "example.com" with the origin you actually want to test), which will treat that origin as secure for this session. Note that you also need to include the --user-data-dir=/test/only/profile/dir to create a fresh testing profile for the flag to work.
I think Firefox also restricted user from accessing GeoLocation API requests from http
. Here's the webkit changelog: https://trac.webkit.org/changeset/200686
Just for the record solution that works across most database engines though might not be the most efficient:
Select Top (ReturnCount) *
From (
Select Top (SkipCount + ReturnCount) *
From SourceTable
Order By ReverseSortCondition
) ReverseSorted
Order By SortCondition
Pelase note: the last page would still contain ReturnCount rows no matter what SkipCount is. But that might be a good thing in many cases.
If you want to set the column you filter on as a new index, you could also consider to use .filter
; if you want to keep it as a separate column then str.contains
is the way to go.
Let's say you have
df = pd.DataFrame({'vals': [1, 2, 3, 4, 5], 'ids': [u'aball', u'bball', u'cnut', u'fball', 'ballxyz']})
ids vals
0 aball 1
1 bball 2
2 cnut 3
3 fball 4
4 ballxyz 5
and your plan is to filter all rows in which ids
contains ball
AND set ids
as new index, you can do
df.set_index('ids').filter(like='ball', axis=0)
which gives
vals
ids
aball 1
bball 2
fball 4
ballxyz 5
But filter
also allows you to pass a regex, so you could also filter only those rows where the column entry ends with ball
. In this case you use
df.set_index('ids').filter(regex='ball$', axis=0)
vals
ids
aball 1
bball 2
fball 4
Note that now the entry with ballxyz
is not included as it starts with ball
and does not end with it.
If you want to get all entries that start with ball
you can simple use
df.set_index('ids').filter(regex='^ball', axis=0)
yielding
vals
ids
ballxyz 5
The same works with columns; all you then need to change is the axis=0
part. If you filter based on columns, it would be axis=1
.
The greatly upvoted answer removes not only the final comma, but also any spaces that follow. But removing those following spaces was not what was part of the original problem. So:
let str = 'abc,def,ghi, ';
let str2 = str.replace(/,(?=\s*$)/, '');
alert("'" + str2 + "'");
'abc,def,ghi '
make sure dependencies for jetty naming and jetty plus are included (not just provided scope). This fixed it for me.
So wait, this is just a list-within-a-list?
The easiest way is probably just to use nested for loops:
>>> a = [[1, 3, 4], [2, 4, 4], [3, 4, 5]]
>>> a
[[1, 3, 4], [2, 4, 4], [3, 4, 5]]
>>> for list in a:
... for number in list:
... print number
...
1
3
4
2
4
4
3
4
5
Or is it something more complicated than that? Arbitrary nesting or something? Let us know if there's something else as well.
Also, for performance reasons, you might want to look at using list comprehensions to do this:
http://docs.python.org/tutorial/datastructures.html#nested-list-comprehensions
For those who are still trying, this link helped me out, too; it just puts it all together:
http://dotnetslackers.com/VB_NET/re-36138_How_To_Get_Selected_Date_from_MonthCalendar_control.aspx
private void MonthCalendar1_DateChanged(object sender, System.Windows.Forms.DateRangeEventArgs e)
{
//Display the dates for selected range
Label1.Text = "Dates Selected from :" + (MonthCalendar1.SelectionRange.Start() + " to " + MonthCalendar1.SelectionRange.End);
//To display single selected of date
//MonthCalendar1.MaxSelectionCount = 1;
//To display single selected of date use MonthCalendar1.SelectionRange.Start/ MonthCalendarSelectionRange.End
Label2.Text = "Date Selected :" + MonthCalendar1.SelectionRange.Start;
}
Use a native SQL query by specifying a @NamedNativeQuery
annotation on the entity class, or by using the EntityManager.createNativeQuery
method. You will need to specify the type of the ResultSet using an appropriate class, or use a ResultSet mapping.
I just catch this "EmptyResultDataAccessException"
public Myclass findOne(String id){
try {
Myclass m = this.jdbcTemplate.queryForObject(
"SELECT * FROM tb_t WHERE id = ?",
new Object[]{id},
new RowMapper<Myclass>() {
public Myclass mapRow(ResultSet rs, int rowNum) throws SQLException {
Myclass m = new Myclass();
m.setName(rs.getString("name"));
return m;
}
});
return m;
} catch (EmptyResultDataAccessException e) { // result.size() == 0;
return null;
}
}
then you can check:
if(m == null){
// insert operation.
}else{
// update operation.
}
Disclosure: I wrote the plugin.
Since the question doesn't specify a specific markdown implementation I'd like to mention the Comments Plugin for python-markdown, which implements the same pandoc commenting style mentioned above.
A negative look ahead is a correct answer, but it can be written more cleanly like:
(\\)(?!.*\\)
This looks for an occurrence of \ and then in a check that does not get matched, it looks for any number of characters followed by the character you don't want to see after it. Because it's negative, it only matches if it does not find a match.
A tree in Python is quite simple. Make a class that has data and a list of children. Each child is an instance of the same class. This is a general n-nary tree.
class Node(object):
def __init__(self, data):
self.data = data
self.children = []
def add_child(self, obj):
self.children.append(obj)
Then interact:
>>> n = Node(5)
>>> p = Node(6)
>>> q = Node(7)
>>> n.add_child(p)
>>> n.add_child(q)
>>> n.children
[<__main__.Node object at 0x02877FF0>, <__main__.Node object at 0x02877F90>]
>>> for c in n.children:
... print c.data
...
6
7
>>>
This is a very basic skeleton, not abstracted or anything. The actual code will depend on your specific needs - I'm just trying to show that this is very simple in Python.
You can use ternary operator in java.
Syntax:
Condition ? Block 1 : Block 2
So in your code you can do like this,
name = ((city.getName() == null) ? "N/A" : city.getName());
For more info you can refer this resource.
The input in the markup is missing "type"
, the input (text I assume) has the attribute name="name"
and ID="cname"
, the provided code by Ayo calls the input named "cname"* where it should be "name".
Using the form designer:
You can set also the tool tip programatically using the following call:
this.toolTip1.SetToolTip(this.targetControl, "My Tool Tip");
The only way you would be getting the last column from this code is if you don't include your print statement in your for
loop.
This is most likely the end of your code:
for row in reader:
content = list(row[i] for i in included_cols)
print content
You want it to be this:
for row in reader:
content = list(row[i] for i in included_cols)
print content
Now that we have covered your mistake, I would like to take this time to introduce you to the pandas module.
Pandas is spectacular for dealing with csv files, and the following code would be all you need to read a csv and save an entire column into a variable:
import pandas as pd
df = pd.read_csv(csv_file)
saved_column = df.column_name #you can also use df['column_name']
so if you wanted to save all of the info in your column Names
into a variable, this is all you need to do:
names = df.Names
It's a great module and I suggest you look into it. If for some reason your print statement was in for
loop and it was still only printing out the last column, which shouldn't happen, but let me know if my assumption was wrong. Your posted code has a lot of indentation errors so it was hard to know what was supposed to be where. Hope this was helpful!
I found that none of the answers here applied to my specific use case, so I thought I would share my solution.
I was looking to redirect an unauthentciated user to public version of an app page with any possible URL params. Example:
/app/4903294/my-great-car?email=coolguy%40gmail.com to
/public/4903294/my-great-car?email=coolguy%40gmail.com
Here's the solution that worked for me.
return redirect(url_for('app.vehicle', vid=vid, year_make_model=year_make_model, **request.args))
Hope this helps someone!
At the right upper corner second last icon (encircled red in attached image) is for activate/deactivate debugging. Click it to toggle debugging anytime.
Click on "Tables" in "Connections" window, choose "Import data ...", follow the wizard and you will be asked for name for new table.
I'm assuming you're still asking about the same situation as in your previous question. That is, master-new will not contain master-old in its history.* If you call master-new "master", you will effectively have rewritten history. It does not matter how you get into a state in which master is not a descendant of a previous position of master, simply that it is in that state.
Other users attempting to pull while master does not exist will simply have their pulls fail (no such ref on remote), and once it exists again in a new place, their pulls will have to attempt to merge their master with the new remote master, just as if you merged master-old and master-new in your repository. Given what you're trying to do here, the merge would have conflicts. (If they were resolved, and the result was pushed back into the repository, you'd be in an even worse state - both versions of history there.)
To answer your question simply: you should accept that sometimes there will be mistakes in your history. This is okay. It happens to everyone. There are reverted commits in the git.git repository. The important thing is that once we publish history, it is something everyone can trust.
*If it did, this would be equivalent to pushing some changes onto master, and then creating a new branch where it used to be. No problem.
I really liked the answer given by Bahadir Yagan except I didn't like depending on a limited set of icons given by Google or an external API to generate my marker icons. Here is the initial solution:
var marker = new google.maps.Marker({ id: "some-id", icon: { path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW, strokeColor: "red", scale: 3 }, map: map, title: "some-title", position: myLatlng });
And here is my improved solution:
var marker = new google.maps.Marker({
position: myLatlng,
icon:{
path: 'm 12,2.4000002 c -2.7802903,0 -5.9650002,1.5099999 -5.9650002,5.8299998 0,1.74375 1.1549213,3.264465 2.3551945,4.025812 1.2002732,0.761348 2.4458987,0.763328 2.6273057,2.474813 L 12,24 12.9825,14.68 c 0.179732,-1.704939 1.425357,-1.665423 2.626049,-2.424188 C 16.809241,11.497047 17.965,9.94 17.965,8.23 17.965,3.9100001 14.78029,2.4000002 12,2.4000002 Z',
fillColor: '#00FF00',
fillOpacity: 1.0,
strokeColor: '#000000',
strokeWeight: 1,
scale: 2,
anchor: new google.maps.Point(12, 24),
},
});
I wanted a specific pin icon so I went and made one with inkscape, then opened the SVG file and copied the svg path into the path into the code, but this works with any SVG path that you put in the "path" attribute of the icon object.
Here is the result:
A query of type MyEntity
is going to return MyEntity
. You want a query for a Long
.
CriteriaBuilder qb = entityManager.getCriteriaBuilder();
CriteriaQuery<Long> cq = qb.createQuery(Long.class);
cq.select(qb.count(cq.from(MyEntity.class)));
cq.where(/*your stuff*/);
return entityManager.createQuery(cq).getSingleResult();
Obviously you will want to build up your expression with whatever restrictions and groupings etc you skipped in the example.
You can use the row_numer() over(partition by ...)
syntax like so:
select * from
(
select *
, ROW_NUMBER() OVER(PARTITION BY CName ORDER BY AddressLine) AS row
from myTable
) as a
where row = 1
What this does is that it creates a column called row
, which is a counter that increments every time it sees the same CName
, and indexes those occurrences by AddressLine
. By imposing where row = 1
, one can select the CName
whose AddressLine
comes first alphabetically. If the order by
was desc
, then it would pick the CName
whose AddressLine
comes last alphabetically.
For Xamarin.iOS (C#):
UIButton messagesButton = new UIButton(UIButtonType.Custom);
UIImage icon = UIImage.FromBundle("Images/icon.png");
messagesButton.SetImage(icon.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate), UIControlState.Normal);
messagesButton.TintColor = UIColor.White;
messagesButton.Frame = new RectangleF(0, 0, 25, 25);
This is very possible if you write your own helper. We are using a custom $
helper to accomplish this type of interaction (and more):
/*///////////////////////
Adds support for passing arguments to partials. Arguments are merged with
the context for rendering only (non destructive). Use `:token` syntax to
replace parts of the template path. Tokens are replace in order.
USAGE: {{$ 'path.to.partial' context=newContext foo='bar' }}
USAGE: {{$ 'path.:1.:2' replaceOne replaceTwo foo='bar' }}
///////////////////////////////*/
Handlebars.registerHelper('$', function(partial) {
var values, opts, done, value, context;
if (!partial) {
console.error('No partial name given.');
}
values = Array.prototype.slice.call(arguments, 1);
opts = values.pop();
while (!done) {
value = values.pop();
if (value) {
partial = partial.replace(/:[^\.]+/, value);
}
else {
done = true;
}
}
partial = Handlebars.partials[partial];
if (!partial) {
return '';
}
context = _.extend({}, opts.context||this, _.omit(opts, 'context', 'fn', 'inverse'));
return new Handlebars.SafeString( partial(context) );
});
For me, these steps fixed the issue:
1- Running this cmd as admin:
npm install --global --production windows-build-tools
2- Then running npm rebuild
after the 1st step is completed (especially completing the python 2.7 installation, which was the main cause of the issue)
values_of_objArray = [
{ id: 3432, name: "Recent" },
{ id: 3442, name: "Most Popular" },
{ id: 3352, name: "Rating" }
];
private ValueId : number = 0 // this will be used for multi access like
// update, deleting the obj with id.
private selectedObj : any;
private selectedValueObj(id: any) {
this.ValueId = (id.srcElement || id.target).value;
for (let i = 0; i < this.values_of_objArray.length; i++) {
if (this.values_of_objArray[i].id == this.ValueId) {
this.selectedObj = this.values_of_objArray[i];
}
}
}
Now play with this.selectedObj
which has the selected obj from the view.
HTML:
<select name="values_of_obj" class="form-control" [(ngModel)]="ValueId"
(change)="selectedValueObj($event)" required>
<option *ngFor="let Value of values_of_objArray"
[value]="Value.id">{{Value.name}}</option>
</select>
For those who came here looking for a way to take pictures/photos programmatically using both Android's Camera and Camera2 API, take a look at the open source sample provided by Google itself here.
The difference between a non-lateral
and a lateral
join lies in whether you can look to the left hand table's row. For example:
select *
from table1 t1
cross join lateral
(
select *
from t2
where t1.col1 = t2.col1 -- Only allowed because of lateral
) sub
This "outward looking" means that the subquery has to be evaluated more than once. After all, t1.col1
can assume many values.
By contrast, the subquery after a non-lateral
join can be evaluated once:
select *
from table1 t1
cross join
(
select *
from t2
where t2.col1 = 42 -- No reference to outer query
) sub
As is required without lateral
, the inner query does not depend in any way on the outer query. A lateral
query is an example of a correlated
query, because of its relation with rows outside the query itself.
In a comment to @theodros-zelleke's answer, @j-jones asked about what to do if the index is not unique. I had to deal with such a situation. What I did was to rename the duplicates in the index before I called drop()
, a la:
dropped_indexes = <determine-indexes-to-drop>
df.index = rename_duplicates(df.index)
df.drop(df.index[dropped_indexes], inplace=True)
where rename_duplicates()
is a function I defined that went through the elements of index and renamed the duplicates. I used the same renaming pattern as pd.read_csv()
uses on columns, i.e., "%s.%d" % (name, count)
, where name
is the name of the row and count
is how many times it has occurred previously.
Here's another solution, usable if the frames are from different domains.
var frame = /*the iframe DOM object*/;
frame.contentWindow.postMessage({call:'sendValue', value: /*value*/}, /*frame domain url or '*'*/);
And in the frame itself:
window.addEventListener('message', function(event) {
var origin = event.origin || event.originalEvent.origin; // For Chrome, the origin property is in the event.originalEvent object.
if (origin !== /*the container's domain url*/)
return;
if (typeof event.data == 'object' && event.data.call=='sendValue') {
// Do something with event.data.value;
}
}, false);
Don't know which browsers support this, though.
One can also use RLIKE
as below
SELECT * FROM artists WHERE name RLIKE '^[abc]';
To communicate a child component with another child component I've made a method in parent which calls a method in a child with:
this.$refs.childMethod()
And from the another child I've called the root method:
this.$root.theRootMethod()
It worked for me.
Just simply click on your app name and look on your right, you app id should be there
For your app secret, u have to click show.
Hope that helps !
A class in HTML means that in order to set attributes to it in CSS, you simply need to add a period in front of it.
For example, the CSS code of that html code may be:
.clear { height: 50px; width: 25px; }
Also, if you, as suggested by abiessu, are attempting to add the CSS clear: both;
attribute to the div to prevent anything from floating to the left or right of this div, you can use this CSS code:
.clear { clear: both; }
if re.search(r'pattern', string):
Simple if-test:
if re.search(r'ing\b', "seeking a great perhaps"): # any words end with ing?
print("yes")
Pattern check, extract a substring, case insensitive:
match_object = re.search(r'^OUGHT (.*) BE$', "ought to be", flags=re.IGNORECASE)
if match_object:
assert "to" == match_object.group(1) # what's between ought and be?
Notes:
Use re.search()
not re.match. Match restricts to the start of strings, a confusing convention if you ask me. If you do want a string-starting match, use caret or \A
instead, re.search(r'^...', ...)
Use raw string syntax r'pattern'
for the first parameter. Otherwise you would need to double up backslashes, as in re.search('ing\\b', ...)
In this example, \b
is a special sequence meaning word-boundary in regex. Not to be confused with backspace.
re.search()
returns None
if it doesn't find anything, which is always falsy.
re.search()
returns a Match object if it finds anything, which is always truthy.
a group is what matched inside parentheses
group numbering starts at 1
No standard method available. You need to iterate and you can create a simple helper:
Object.prototype.getKeyByValue = function( value ) {
for( var prop in this ) {
if( this.hasOwnProperty( prop ) ) {
if( this[ prop ] === value )
return prop;
}
}
}
var test = {
key1: 42,
key2: 'foo'
};
test.getKeyByValue( 42 ); // returns 'key1'
One word of caution: Even if the above works, its generally a bad idea to extend any host or native object's .prototype
. I did it here because it fits the issue very well. Anyway, you should probably use this function outside the .prototype
and pass the object into it instead.
using System.Net.NetworkInformation;
public static bool PingHost(string nameOrAddress)
{
bool pingable = false;
Ping pinger = null;
try
{
pinger = new Ping();
PingReply reply = pinger.Send(nameOrAddress);
pingable = reply.Status == IPStatus.Success;
}
catch (PingException)
{
// Discard PingExceptions and return false;
}
finally
{
if (pinger != null)
{
pinger.Dispose();
}
}
return pingable;
}
A submodule is nothing but a clone of a git repo within another repo with some extra meta data (gitlink tree entry, .gitmodules file )
$ cd your_submodule
$ git checkout master
<hack,edit>
$ git commit -a -m "commit in submodule"
$ git push
$ cd ..
$ git add your_submodule
$ git commit -m "Updated submodule"
There's a section on Bringing Up a Popup Menu in the How to Use Menus article of The Java Tutorials which explains how to use the JPopupMenu
class.
The example code in the tutorial shows how to add MouseListener
s to the components which should display a pop-up menu, and displays the menu accordingly.
(The method you describe is fairly similar to the way the tutorial presents the way to show a pop-up menu on a component.)
Catch System.Exception
and switch on the types
catch (Exception ex)
{
if (ex is FormatException || ex is OverflowException)
{
WebId = Guid.Empty;
return;
}
throw;
}
I was getting the same issue "Cannot open git-upload-pack" in eclipse Juno while trying to clone ('Git Repository Exploring' perspective). https://[username]@[hostName]:[portNumber]/scm/TestRepo.git
Solution : Issue got solved after adding "-Dhttps.protocols=TLSv1" to the eclipse.ini file.
Possible Reason for Error : Some servers does not support TLSv1.2, or TLSv1.1, they might support only TLSv1.0. Java 8 default TLS protocol is 1.2 whereas it is 1.0 with Java 7. For an unknown reason, when Egit connects to the server, it does not fallback to TLSv1.1 after TLS1.2 fails to establish the connection. Don't know if it's an Egit or a Java 8 issue Courtesy : https://www.eclipse.org/forums/index.php/t/1065782/
If you are using Jupyter in anaconda, after conda update scikit-learn
in terminal, close anaconda and restart, otherwise the error will occur again.
You could write a custom validation attribute:
public class CombinedMinLengthAttribute: ValidationAttribute
{
public CombinedMinLengthAttribute(int minLength, params string[] propertyNames)
{
this.PropertyNames = propertyNames;
this.MinLength = minLength;
}
public string[] PropertyNames { get; private set; }
public int MinLength { get; private set; }
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var properties = this.PropertyNames.Select(validationContext.ObjectType.GetProperty);
var values = properties.Select(p => p.GetValue(validationContext.ObjectInstance, null)).OfType<string>();
var totalLength = values.Sum(x => x.Length) + Convert.ToString(value).Length;
if (totalLength < this.MinLength)
{
return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));
}
return null;
}
}
and then you might have a view model and decorate one of its properties with it:
public class MyViewModel
{
[CombinedMinLength(20, "Bar", "Baz", ErrorMessage = "The combined minimum length of the Foo, Bar and Baz properties should be longer than 20")]
public string Foo { get; set; }
public string Bar { get; set; }
public string Baz { get; set; }
}
Assertions are statements that state a fact confidently in our program.
Syntax : assert <condition>
or assert <condition>,<error message>
It has a condition/expression which is supposed to be always true. If the condition is false, the assert
statement will halt the program and throw an error message saying AssertionError
. So your assertion expression will be something that you don't want in your program.
e.g.
assert <condition>
-- using assert without <error message>
var = int(input("Enter value 1-9 inclusive:"))
assert var!=0
print(var)
Output :
If input is 0 :
AssertionError
If input is 1 :
1
assert <condition>,<error message>
-- using assert with an <error message>
var = int(input("Enter value 1-9 inclusive:"))
assert var!=0,"Input cannot be zero"
print(var)
Output :
If input is 0 :
AssertionError: Input cannot be zero
If input is 1 :
1
Key Points :
I have to say your workflow is not in a standard Android way. In Android, you don't need to finish()
your activity if you want to open another activity from Intent. As for user's convenience, Android allows user to use 'back' key to go back from the activity that you opened to your app.
So just let the system stop you activity and save anything need to when you activity is called back.
Best to dump to a compressed file
mysqldump --no-create-info -u username -hhostname -p dbname | gzip > /backupsql.gz
and to restore using pv apt-get install pv
to monitor progress
pv backupsql.gz | gunzip | mysql -uusername -hhostip -p dbname
If you are using node.js you can do this:
yourByteArray.toString('base64');
Typically an alternative for fixed size Lists are Java arrays. Lists by default are allowed to grow/shrink in Java. However, that does not mean you cannot have a List of a fixed size. You'll need to do some work and create a custom implementation.
You can extend an ArrayList with custom implementations of the clear, add and remove methods.
e.g.
import java.util.ArrayList;
public class FixedSizeList<T> extends ArrayList<T> {
public FixedSizeList(int capacity) {
super(capacity);
for (int i = 0; i < capacity; i++) {
super.add(null);
}
}
public FixedSizeList(T[] initialElements) {
super(initialElements.length);
for (T loopElement : initialElements) {
super.add(loopElement);
}
}
@Override
public void clear() {
throw new UnsupportedOperationException("Elements may not be cleared from a fixed size List.");
}
@Override
public boolean add(T o) {
throw new UnsupportedOperationException("Elements may not be added to a fixed size List, use set() instead.");
}
@Override
public void add(int index, T element) {
throw new UnsupportedOperationException("Elements may not be added to a fixed size List, use set() instead.");
}
@Override
public T remove(int index) {
throw new UnsupportedOperationException("Elements may not be removed from a fixed size List.");
}
@Override
public boolean remove(Object o) {
throw new UnsupportedOperationException("Elements may not be removed from a fixed size List.");
}
@Override
protected void removeRange(int fromIndex, int toIndex) {
throw new UnsupportedOperationException("Elements may not be removed from a fixed size List.");
}
}
I have streamlined the answer of @Quirliom above into functions that can be used:
private static boolean hasLength(CharSequence data) {
if (String.valueOf(data).length() >= 8) return true;
else return false;
}
private static boolean hasSymbol(CharSequence data) {
String password = String.valueOf(data);
boolean hasSpecial = !password.matches("[A-Za-z0-9 ]*");
return hasSpecial;
}
private static boolean hasUpperCase(CharSequence data) {
String password = String.valueOf(data);
boolean hasUppercase = !password.equals(password.toLowerCase());
return hasUppercase;
}
private static boolean hasLowerCase(CharSequence data) {
String password = String.valueOf(data);
boolean hasLowercase = !password.equals(password.toUpperCase());
return hasLowercase;
}
def proc = 'cmd /c C:/TortoiseSVN/bin/TortoiseProc.exe /command:update /path:"C:/work/new/1.2/" /closeonend:2'.execute()
This is my 'svn.groovy' file.
In case of Select2 Version 4+
it has changed syntax and you need to write like this:
// clear all option
$('#select_with_blank_data').html('').select2({data: [{id: '', text: ''}]});
// clear and add new option
$("#select_with_data").html('').select2({data: [
{id: '', text: ''},
{id: '1', text: 'Facebook'},
{id: '2', text: 'Youtube'},
{id: '3', text: 'Instagram'},
{id: '4', text: 'Pinterest'}]});
This should do what you want:
print tempfile.gettempdir()
For me on my Windows box, I get:
c:\temp
and on my Linux box I get:
/tmp
Try using private browsing in Safari or deleting your entire cache/cookies.
I've had some similar issues using chrome when the browser thought it had the website in its cache but actually had not.
The part of the http request that makes the server respond a 304 is the etag. Seems like Safari is sending the right etag without having the corresponding cache.
You can skip the ORM, builders, etc. and simplify your DB/SQL management using sqler
and sqler-mdb
.
-- create this file at: db/mdb/setup/create.database.sql
CREATE DATABASE IF NOT EXISTS sqlermysql
const conf = {
"univ": {
"db": {
"mdb": {
"host": "localhost",
"username":"admin",
"password": "mysqlpassword"
}
}
},
"db": {
"dialects": {
"mdb": "sqler-mdb"
},
"connections": [
{
"id": "mdb",
"name": "mdb",
"dir": "db/mdb",
"service": "MySQL",
"dialect": "mdb",
"pool": {},
"driverOptions": {
"connection": {
"multipleStatements": true
}
}
}
]
}
};
// create/initialize manager
const manager = new Manager(conf);
await manager.init();
// .sql file path is path to db function
const result = await manager.db.mdb.setup.create.database();
console.log('Result:', result);
// after we're done using the manager we should close it
process.on('SIGINT', async function sigintDB() {
await manager.close();
console.log('Manager has been closed');
});
Try This:
(SELECT p.LastName, p.FirstName, o.OrderNo
FROM Persons p
LEFT JOIN Orders o
ON o.OrderNo = p.P_id
)
UNION
(SELECT p.LastName, p.FirstName, o.OrderNo
FROM Persons p
RIGHT JOIN Orders o
ON o.OrderNo = p.P_id
);
+----------+-----------+---------+
| LastName | FirstName | OrderNo |
+----------+-----------+---------+
| Singh | Shashi | 1 |
| Yadav | Sunil | NULL |
| Singh | Satya | NULL |
| Jain | Ankit | NULL |
| NULL | NULL | 11 |
| NULL | NULL | 12 |
| NULL | NULL | 13 |
+----------+-----------+---------+
len=`cat filename | wc -l`
len=$(( $len + 1 ))
l=$(( $len - 99 ))
sed -n "${l},${len}p" filename
first line takes the length (Total lines) of file then +1 in the total lines after that we have to fatch 100 records so, -99 from total length then just put the variables in the sed command to fetch the last 100 lines from file
I hope this will help you.
If all of your classes are in the same package, you shouldn't need to import them.
Simply instantiate the object like so:
CustomObject myObject = new CustomObject();
If you use CSS to select a monospace font, the problem of varying character length is easily solved.
To write in the Visual Studio output window I used IVsOutputWindow
and IVsOutputWindowPane
. I included as members in my OutputWindow
class which look like this :
public class OutputWindow : TextWriter
{
#region Members
private static readonly Guid mPaneGuid = new Guid("AB9F45E4-2001-4197-BAF5-4B165222AF29");
private static IVsOutputWindow mOutputWindow = null;
private static IVsOutputWindowPane mOutputPane = null;
#endregion
#region Constructor
public OutputWindow(DTE2 aDte)
{
if( null == mOutputWindow )
{
IServiceProvider serviceProvider =
new ServiceProvider(aDte as Microsoft.VisualStudio.OLE.Interop.IServiceProvider);
mOutputWindow = serviceProvider.GetService(typeof(SVsOutputWindow)) as IVsOutputWindow;
}
if (null == mOutputPane)
{
Guid generalPaneGuid = mPaneGuid;
mOutputWindow.GetPane(ref generalPaneGuid, out IVsOutputWindowPane pane);
if ( null == pane)
{
mOutputWindow.CreatePane(ref generalPaneGuid, "Your output window name", 0, 1);
mOutputWindow.GetPane(ref generalPaneGuid, out pane);
}
mOutputPane = pane;
}
}
#endregion
#region Properties
public override Encoding Encoding => System.Text.Encoding.Default;
#endregion
#region Public Methods
public override void Write(string aMessage) => mOutputPane.OutputString($"{aMessage}\n");
public override void Write(char aCharacter) => mOutputPane.OutputString(aCharacter.ToString());
public void Show(DTE2 aDte)
{
mOutputPane.Activate();
aDte.ExecuteCommand("View.Output", string.Empty);
}
public void Clear() => mOutputPane.Clear();
#endregion
}
If you have a big text to write in output window you usually don't want to freeze the UI. In this purpose you can use a Dispatcher
. To write something in output window using this implementation now you can simple do this:
Dispatcher mDispatcher = HwndSource.FromHwnd((IntPtr)mDte.MainWindow.HWnd).RootVisual.Dispatcher;
using (OutputWindow outputWindow = new OutputWindow(mDte))
{
mDispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
{
outputWindow.Write("Write what you want here");
}));
}
I generally like the shorthand version:
if (!!wlocation) { window.location = wlocation; }
Just add a .
to it:
svn checkout file:///home/landonwinters/svn/waterproject/trunk .
That means: check out to current directory.
That's not padding, it's the shadow around the button in its background drawable. Create your own background and it will disappear.
I simply added security.ignored=/**
in the application.properties
,and that did the charm.
This needs to be done on the server-side, where the cookie was issued.
According to the W3C, they are the same. In reality, for cross browser safety, you should use window.location
rather than document.location
.
var lst = new List<int>() { 1, 2, 3 };
var ans = lst.Where( i => i > 3 );
(ans == null).Dump(); // False
(ans.Count() == 0 ).Dump(); // True
(Dump is from LinqPad)
Output Buffering for Web Developers, a Beginner’s Guide:
Without output buffering (the default), your HTML is sent to the browser in pieces as PHP processes through your script. With output buffering, your HTML is stored in a variable and sent to the browser as one piece at the end of your script.
Advantages of output buffering for Web developers
- Turning on output buffering alone decreases the amount of time it takes to download and render our HTML because it's not being sent to the browser in pieces as PHP processes the HTML.
- All the fancy stuff we can do with PHP strings, we can now do with our whole HTML page as one variable.
- If you've ever encountered the message "Warning: Cannot modify header information - headers already sent by (output)" while setting cookies, you'll be happy to know that output buffering is your answer.
Bootstrap 3 dropped native support for nested collapsing menus, but there's a way to re-enable it with a 3rd party script. It's called SmartMenus. It means adding three new resources to your page, but it seamlessly supports Bootstrap 3.x with multiple levels of menus for nested <ul>/<li>
elements with class="dropdown-menu"
. It automatically displays the proper caret indicator as well.
<head>
...
<script src=".../jquery.smartmenus.min.js"></script>
<script src=".../jquery.smartmenus.bootstrap.min.js"></script>
...
<link rel="stylesheet" href=".../jquery.smartmenus.bootstrap.min.css"/>
...
</head>
Here's a demo page: http://vadikom.github.io/smartmenus/src/demo/bootstrap-navbar-fixed-top.html
Try MemLog. It does the job perfectly and quickly.
Download via one of many mirrors, e.g. this one: SoftPedia page for MemLog.
(MemLog's author has a web site. But this is down some times. Wayback machine snapshot here.)
Example output:
C:\>memlog
2012/02/01,13:22:02,878956544,-1128333312,2136678400,2138578944,-17809408,2147352576
878956544
being the free memory
Just noticed that quick search has been included into eclipse 4.13 as a built-in function by typing Ctrl+Alt+Shift+L (or Cmd+Alt+Shift+L on Mac)
https://www.eclipse.org/eclipse/news/4.13/platform.php#quick-text-search
This is probably caused by different python versions installed on your system, i.e. python2 or python3.
Run command $ pip --version
and $ pip3 --version
to check which pip is from at Python 3x. E.g. you should see version information like below:
pip 19.0.3 from /usr/local/lib/python3.7/site-packages/pip (python 3.7)
Then run the example.py
script with below command
$ python3 example.py
Interesting observation: Tried to copy the same file via various java classes and printed time in nano seconds.
Duration using FileOutputStream byte stream: 4 965 078
Duration using BufferedOutputStream: 1 237 206
Duration using (character text Reader: 2 858 875
Duration using BufferedReader(Buffered character text stream: 1 998 005
Duration using (Files NIO copy): 18 351 115
when using Files Nio copy option it took almost 18 times longer!!! Nio is the slowest option to copy files and BufferedOutputStream looks like the fastest. I used the same simple text file for each class.
Kyle's solution worked perfectly fine for me so I made my research in order to avoid any Js and CSS, but just sticking with HTML.
Adding a value of selected
to the item we want to appear as a header forces it to show in the first place as a placeholder.
Something like:
<option selected disabled>Choose here</option>
The complete markup should be along these lines:
<select>
<option selected disabled>Choose here</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
</select>
You can take a look at this fiddle, and here's the result:
If you do not want the sort of placeholder text to appear listed in the options once a user clicks on the select box just add the hidden
attribute like so:
<select>
<option selected disabled hidden>Choose here</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
</select>
Check the fiddle here and the screenshot below.
Here is the solution:
<select>
<option style="display:none;" selected>Select language</option>
<option>Option 1</option>
<option>Option 2</option>
</select>
nvarchar is going to have significant overhead in memory, storage, working set and indexing, so if the specs dictate that it really will never be necessary, don't bother.
I would not have a hard and fast "always nvarchar" rule because it can be a complete waste in many situations - particularly ETL from ASCII/EBCDIC or identifiers and code columns which are often keys and foreign keys.
On the other hand, there are plenty of cases of columns, where I would be sure to ask this question early and if I didn't get a hard and fast answer immediately, I would make the column nvarchar.
If you are using java 8 the use of the internal Base64 encoder and decoder can be avoided by replacing
return new BASE64Encoder().encode(bytes);
with
return Base64.getEncoder().encodeToString(bytes);
and
return new BASE64Decoder().decodeBuffer(property);
with
return Base64.getDecoder().decode(property);
Note that this solution doesn't protect your data as the methods for decrypting are stored in the same place. It just makes it more difficult to break. Mainly it avoids to print it and show it to everybody by mistake.
Add log4jExposeWebAppRoot -> false in your web.xml. It works with me :)
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>path/log4j.properties</param-value>
</context-param>
<context-param>
<param-name>log4jExposeWebAppRoot</param-name>
<param-value>false</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
Another easy way to get epsilon is:
In [1]: 7./3 - 4./3 -1
Out[1]: 2.220446049250313e-16
I had to run the following command:
sudo apt-get autoremove phpmyadmin
Then I cleared my cache and it worked!
Here's how it is implemented in Android.
As a proof of concept, I translated this code to C#:
var request = (HttpWebRequest)WebRequest.Create("http://g.cn/generate_204");
request.UserAgent = "Android";
request.KeepAlive = false;
request.Timeout = 1500;
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.ContentLength == 0 && response.StatusCode == HttpStatusCode.NoContent)
{
//Connection to internet available
}
else
{
//Connection to internet not available
}
}
You have to close that application first. There is no way to delete it, if it's used by some application.
UnLock IT is a neat utility that helps you to take control of any file or folder when it is locked by some application or system. For every locked resource, you get a list of locking processes and can unlock it by terminating those processes. EMCO Unlock IT offers Windows Explorer integration that allows unlocking files and folders by one click in the context menu.
There's also Unlocker (not recommended, see Warning below), which is a free tool which helps locate any file locking handles running, and give you the option to turn it off. Then you can go ahead and do anything you want with those files.
Warning: The installer includes a lot of undesirable stuff. You're almost certainly better off with UnLock IT.
The jQuery documentation provides a detailed explanation for checked
property vs attribute.
Accordingly, here is another way to retrieve selected radio button value
var accepted = $('input[name="Contact0_AmericanExpress"]:checked').val();
These are mine, based on pure SVG and CSS animations. Don't pay attention to JS code in the snippet bellow, it's just for demoing purposes. Feel free to make your custom ones basing on mine, it's super easy.
var svg = d3.select("svg"),_x000D_
columnsCount = 3;_x000D_
_x000D_
['basic', 'basic2', 'basic3', 'basic4', 'loading', 'loading2', 'spin', 'chrome', 'chrome2', 'flower', 'flower2', 'backstreet_boys'].forEach(function(animation, i){_x000D_
var x = (i%columnsCount+1) * 200-100,_x000D_
y = 20 + (Math.floor(i/columnsCount) * 200);_x000D_
_x000D_
_x000D_
svg.append("text")_x000D_
.attr('text-anchor', 'middle')_x000D_
.attr("x", x)_x000D_
.attr("y", y)_x000D_
.text((i+1)+". "+animation);_x000D_
_x000D_
svg.append("circle")_x000D_
.attr("class", animation)_x000D_
.attr("cx", x)_x000D_
.attr("cy", y+40)_x000D_
.attr("r", 16)_x000D_
});
_x000D_
circle {_x000D_
fill: none;_x000D_
stroke: #bbb;_x000D_
stroke-width: 4_x000D_
}_x000D_
_x000D_
.basic {_x000D_
animation: basic 0.5s linear infinite;_x000D_
stroke-dasharray: 20 80;_x000D_
}_x000D_
_x000D_
@keyframes basic {_x000D_
0% {stroke-dashoffset: 100;}_x000D_
100% {stroke-dashoffset: 0;}_x000D_
}_x000D_
_x000D_
.basic2 {_x000D_
animation: basic2 0.5s linear infinite;_x000D_
stroke-dasharray: 80 20;_x000D_
}_x000D_
_x000D_
@keyframes basic2 {_x000D_
0% {stroke-dashoffset: 100;}_x000D_
100% {stroke-dashoffset: 0;}_x000D_
}_x000D_
_x000D_
.basic3 {_x000D_
animation: basic3 0.5s linear infinite;_x000D_
stroke-dasharray: 20 30;_x000D_
}_x000D_
_x000D_
@keyframes basic3 {_x000D_
0% {stroke-dashoffset: 100;}_x000D_
100% {stroke-dashoffset: 0;}_x000D_
}_x000D_
_x000D_
.basic4 {_x000D_
animation: basic4 0.5s linear infinite;_x000D_
stroke-dasharray: 10 23.3;_x000D_
}_x000D_
_x000D_
@keyframes basic4 {_x000D_
0% {stroke-dashoffset: 100;}_x000D_
100% {stroke-dashoffset: 0;}_x000D_
}_x000D_
_x000D_
.loading {_x000D_
animation: loading 1s linear infinite;_x000D_
stroke-dashoffset: 25;_x000D_
}_x000D_
_x000D_
@keyframes loading {_x000D_
0% {stroke-dashoffset: 0; stroke-dasharray: 50 0; }_x000D_
50% {stroke-dashoffset: -100; stroke-dasharray: 0 50;}_x000D_
100% { stroke-dashoffset: -200;stroke-dasharray: 50 0;}_x000D_
}_x000D_
_x000D_
.loading2 {_x000D_
animation: loading2 1s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes loading2 {_x000D_
0% {stroke-dasharray: 5 28.3; stroke-dashoffset: 75;}_x000D_
50% {stroke-dasharray: 45 5; stroke-dashoffset: -50;}_x000D_
100% {stroke-dasharray: 5 28.3; stroke-dashoffset: -125; }_x000D_
}_x000D_
_x000D_
.spin {_x000D_
animation: spin 1s linear infinite;_x000D_
stroke-dashoffset: 25;_x000D_
}_x000D_
_x000D_
@keyframes spin {_x000D_
0% {stroke-dashoffset: 0; stroke-dasharray: 33.3 0; }_x000D_
50% {stroke-dashoffset: -100; stroke-dasharray: 0 33.3;}_x000D_
100% { stroke-dashoffset: -200;stroke-dasharray: 33.3 0;}_x000D_
}_x000D_
_x000D_
.chrome {_x000D_
animation: chrome 2s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes chrome {_x000D_
0% {stroke-dasharray: 0 100; stroke-dashoffset: 25;}_x000D_
25% {stroke-dasharray: 75 25; stroke-dashoffset: 0;}_x000D_
50% {stroke-dasharray: 0 100; stroke-dashoffset: -125;}_x000D_
75% {stroke-dasharray: 75 25; stroke-dashoffset: -150;}_x000D_
100% {stroke-dasharray: 0 100; stroke-dashoffset: -275;}_x000D_
}_x000D_
_x000D_
.chrome2 {_x000D_
animation: chrome2 1s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes chrome2 {_x000D_
0% {stroke-dasharray: 0 100; stroke-dashoffset: 25;}_x000D_
25% {stroke-dasharray: 50 50; stroke-dashoffset: 0;}_x000D_
50% {stroke-dasharray: 0 100; stroke-dashoffset: -50;}_x000D_
75% {stroke-dasharray: 50 50; stroke-dashoffset: -125;}_x000D_
100% {stroke-dasharray: 0 100; stroke-dashoffset: -175;}_x000D_
}_x000D_
_x000D_
.flower {_x000D_
animation: flower 1s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes flower {_x000D_
0% {stroke-dasharray: 0 20; stroke-dashoffset: 25;}_x000D_
50% {stroke-dasharray: 20 0; stroke-dashoffset: -50;}_x000D_
100% {stroke-dasharray: 0 20; stroke-dashoffset: -125;}_x000D_
}_x000D_
_x000D_
.flower2 {_x000D_
animation: flower2 1s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes flower2 {_x000D_
0% {stroke-dasharray: 5 20; stroke-dashoffset: 25;}_x000D_
50% {stroke-dasharray: 20 5; stroke-dashoffset: -50;}_x000D_
100% {stroke-dasharray: 5 20; stroke-dashoffset: -125;}_x000D_
}_x000D_
_x000D_
.backstreet_boys {_x000D_
animation: backstreet_boys 3s linear infinite;_x000D_
}_x000D_
_x000D_
@keyframes backstreet_boys {_x000D_
0% {stroke-dasharray: 5 28.3; stroke-dashoffset: -225;}_x000D_
15% {stroke-dasharray: 5 28.3; stroke-dashoffset: -300;}_x000D_
30% {stroke-dasharray: 5 20; stroke-dashoffset: -300;}_x000D_
45% {stroke-dasharray: 5 20; stroke-dashoffset: -375;}_x000D_
60% {stroke-dasharray: 5 15; stroke-dashoffset: -375;}_x000D_
75% {stroke-dasharray: 5 15; stroke-dashoffset: -450;}_x000D_
90% {stroke-dasharray: 5 15; stroke-dashoffset: -525;}_x000D_
100% {stroke-dasharray: 5 28.3; stroke-dashoffset: -925;}_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>_x000D_
<svg width="600px" height="700px"></svg>
_x000D_
Also available on CodePen: https://codepen.io/anon/pen/PeRazr
This is how I usually do it (sql server).
Create Table Master (
MasterID int identity(1,1) primary key,
Stuff varchar(10)
)
GO
Create Table Detail (
DetailID int identity(1,1) primary key,
MasterID int references Master, --use 'references'
Stuff varchar(10))
GO
Insert into Master values('value')
--(1 row(s) affected)
GO
Insert into Detail values (1, 'Value1') -- Works
--(1 row(s) affected)
insert into Detail values (2, 'Value2') -- Fails
--Msg 547, Level 16, State 0, Line 2
--The INSERT statement conflicted with the FOREIGN KEY constraint "FK__Detail__MasterID__0C70CFB4".
--The conflict occurred in database "Play", table "dbo.Master", column 'MasterID'.
--The statement has been terminated.
As you can see the second insert into the detail fails because of the foreign key. Here's a good weblink that shows various syntax for defining FK during table creation or after.
I modified de answer so I can pass any view, button, label etc. to get it's parent UIViewController
. Here is my code.
+(UIViewController *)viewController:(id)view {
UIResponder *responder = view;
while (![responder isKindOfClass:[UIViewController class]]) {
responder = [responder nextResponder];
if (nil == responder) {
break;
}
}
return (UIViewController *)responder;
}
Edit Swift 3 Version
class func viewController(_ view: UIView) -> UIViewController {
var responder: UIResponder? = view
while !(responder is UIViewController) {
responder = responder?.next
if nil == responder {
break
}
}
return (responder as? UIViewController)!
}
Edit 2:- Swift Extention
extension UIView
{
//Get Parent View Controller from any view
func parentViewController() -> UIViewController {
var responder: UIResponder? = self
while !(responder is UIViewController) {
responder = responder?.next
if nil == responder {
break
}
}
return (responder as? UIViewController)!
}
}
If you want to set permissions on all files to a+r
, and all directories to a+x
, and do that recursively through the complete subdirectory tree, use:
chmod -R a+rX *
The X
(that is capital X
, not small x
!) is ignored for files (unless they are executable for someone already) but is used for directories.
I created it a long time ago, related question
String.Format = function (b) {
var a = arguments;
return b.replace(/(\{\{\d\}\}|\{\d\})/g, function (b) {
if (b.substring(0, 2) == "{{") return b;
var c = parseInt(b.match(/\d/)[0]);
return a[c + 1]
})
};
From @Johan La Rooy's solution, sorting the images using sorted(glob.glob('*.png'))
does not work for me, the output list is still not ordered by their names.
However, the sorted(glob.glob('*.png'), key=os.path.getmtime)
works perfectly.
I am a bit confused how can sorting by their names does not work here.
Thank @Martin Thoma for posting this great question and @Johan La Rooy for the helpful solutions.
Yet another alternative (kinda similar to https://stackoverflow.com/a/32241628/6095216 above) using StringUtils from the apache commons library: https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/StringUtils.html#equalsAnyIgnoreCase-java.lang.CharSequence-java.lang.CharSequence...-
if (StringUtils.equalsAnyIgnoreCase(str, "val1", "val2", "val3")) {
// remaining code
}
You can clean cache in React Native >= 0.50 and npm > 5 :
watchman watch-del-all &&
rm -rf $TMPDIR/react-native-packager-cache-* &&
rm -rf $TMPDIR/metro-bundler-cache-* &&
rm -rf node_modules/
&& npm cache clean --force &&
npm install &&
npm start -- --reset-cache
Apart from cleaning npm cache you might need to reset simulator or clean build etc.
You have at least these 3 issues:
display
yet in your javascript you attempt to get element myDiv
which is not even defined in your markup.You can save all three values at once by doing:
var title=new Array();
var names=new Array();//renamed to names -added an S-
//to avoid conflicts with the input named "name"
var tickets=new Array();
function insert(){
var titleValue = document.getElementById('title').value;
var actorValue = document.getElementById('name').value;
var ticketsValue = document.getElementById('tickets').value;
title[title.length]=titleValue;
names[names.length]=actorValue;
tickets[tickets.length]=ticketsValue;
}
And then change the show function to:
function show() {
var content="<b>All Elements of the Arrays :</b><br>";
for(var i = 0; i < title.length; i++) {
content +=title[i]+"<br>";
}
for(var i = 0; i < names.length; i++) {
content +=names[i]+"<br>";
}
for(var i = 0; i < tickets.length; i++) {
content +=tickets[i]+"<br>";
}
document.getElementById('display').innerHTML = content; //note that I changed
//to 'display' because that's
//what you have in your markup
}
Here's a jsfiddle for you to play around.
Using river can present issues when your operation scales up. River will use a ton of memory when under heavy operation. I recommend implementing your own elasticsearch models, or if you're using mongoose you can build your elasticsearch models right into that or use mongoosastic which essentially does this for you.
Another disadvantage to Mongodb River is that you'll be stuck using mongodb 2.4.x branch, and ElasticSearch 0.90.x. You'll start to find that you're missing out on a lot of really nice features, and the mongodb river project just doesn't produce a usable product fast enough to keep stable. That said Mongodb River is definitely not something I'd go into production with. It's posed more problems than its worth. It will randomly drop write under heavy load, it will consume lots of memory, and there's no setting to cap that. Additionally, river doesn't update in realtime, it reads oplogs from mongodb, and this can delay updates for as long as 5 minutes in my experience.
We recently had to rewrite a large portion of our project, because its a weekly occurrence that something goes wrong with ElasticSearch. We had even gone as far as to hire a Dev Ops consultant, who also agrees that its best to move away from River.
UPDATE: Elasticsearch-mongodb-river now supports ES v1.4.0 and mongodb v2.6.x. However, you'll still likely run into performance problems on heavy insert/update operations as this plugin will try to read mongodb's oplogs to sync. If there are a lot of operations since the lock(or latch rather) unlocks, you'll notice extremely high memory usage on your elasticsearch server. If you plan on having a large operation, river is not a good option. The developers of ElasticSearch still recommend you to manage your own indexes by communicating directly with their API using the client library for your language, rather than using river. This isn't really the purpose of river. Twitter-river is a great example of how river should be used. Its essentially a great way to source data from outside sources, but not very reliable for high traffic or internal use.
Also consider that mongodb-river falls behind in version, as its not maintained by ElasticSearch Organization, its maintained by a thirdparty. Development was stuck on v0.90 branch for a long time after the release of v1.0, and when a version for v1.0 was released it wasn't stable until elasticsearch released v1.3.0. Mongodb versions also fall behind. You may find yourself in a tight spot when you're looking to move to a later version of each, especially with ElasticSearch under such heavy development, with many very anticipated features on the way. Staying up on the latest ElasticSearch has been very important as we rely heavily on constantly improving our search functionality as its a core part of our product.
All in all you'll likely get a better product if you do it yourself. Its not that difficult. Its just another database to manage in your code, and it can easily be dropped in to your existing models without major refactoring.
You probably want to read up on slice. Your code will look something like this:
$("a").slice(0,20)
Try new_list = a[0:2] + [a[4]] + a[6:]
.
Or more generally, something like this:
from itertools import chain
new_list = list(chain(a[0:2], [a[4]], a[6:]))
This works with other sequences as well, and is likely to be faster.
Or you could do this:
def chain_elements_or_slices(*elements_or_slices):
new_list = []
for i in elements_or_slices:
if isinstance(i, list):
new_list.extend(i)
else:
new_list.append(i)
return new_list
new_list = chain_elements_or_slices(a[0:2], a[4], a[6:])
But beware, this would lead to problems if some of the elements in your list were themselves lists.
To solve this, either use one of the previous solutions, or replace a[4]
with a[4:5]
(or more generally a[n]
with a[n:n+1]
).
You get an extension ID when you upload your extension to Google Web Store. Ie. Adblock has URL https://chrome.google.com/webstore/detail/cfhdojbkjhnklbpkdaibdccddilifddb
and the last part of this URL is its extension ID cfhdojbkjhnklbpkdaibdccddilifddb
.
If you wish to read installed extension IDs from your extension, check out the managment module. chrome.management.getAll
allows to fetch information about all installed extensions.
if current directory of the operating system is the path of the workbook you are using, Workbooks.Open FileName:= "TRICATEndurance Summary.html"
would suffice. if you are making calculations with the path, you can refer to current directory as .
and then \
to tell the file is in that dir, and in case you have to change the os's current directory to your workbook's path, you can use ChDrive
and ChDir
to do so.
ChDrive ThisWorkbook.Path
ChDir ThisWorkbook.Path
Workbooks.Open FileName:= ".\TRICATEndurance Summary.html"
It's a buzzword that refers to things like the normal Web architecture with e.g., Javascript - ASP.Net - Middleware - Database layer. Each of these things is a "tier".
If you don't want to have the current error handling behaviour, it's really easy:
return text.Split(',').Select(x => int.Parse(x));
Otherwise, I'd use an extra helper method (as seen this morning!):
public static int? TryParseInt32(string text)
{
int value;
return int.TryParse(text, out value) ? value : (int?) null;
}
and:
return text.Split(',').Select<string, int?>(TryParseInt32)
.Where(x => x.HasValue)
.Select(x => x.Value);
or if you don't want to use the method group conversion:
return text.Split(',').Select(t => t.TryParseInt32(t)
.Where(x => x.HasValue)
.Select(x => x.Value);
or in query expression form:
return from t in text.Split(',')
select TryParseInt32(t) into x
where x.HasValue
select x.Value;
If you have tried everything still no luck you can try this :_
1 -> Uninstall NVM
rm -rf ~/.nvm
2 -> Remove npm dependencies by following this
3 -> Install NVM
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
4 -> Set ~/.bash_profile
configuration
Run sudo nano ~/.bash_profile
Copy and paste following this
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion" # This loads nvm bash_completion
5 -> CONTROL + X
save the changes
6 -> Run . ~/.bash_profile
7 -> Now you should have nvm
installed on your machine, to install node run nvm install v7.8.0
this will be default node version or you can install any version of node
eclipse.ini:
--launcher.defaultAction
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize<br/>
256m
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
-vm
C:\Program Files\Java\jdk1.7.0_21\jre\bin\server\jvm.dll<br/>
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.7
That worked for me. It doesnt have to be on the beginning, but surely it cant be at the end of the file.
What is the difference between exit(0)
and exit(1)
in C language?
exit(0)
indicates successful program termination & it is fully portable, While
exit(1)
(usually) indicates unsucessful termination. However, it's usage is non-portable.
Note that the C standard defines EXIT_SUCCESS
and EXIT_FAILURE
to return termination status from a C program.
0
and EXIT_SUCCESS
are the values specified by the standard to indicate successful termination, however, only EXIT_FAILURE
is the standard value for returning unsucessful termination. 1
is used for the same in many implementations though.
Reference:
C99 Standard: 7.20.4.3 The exit
function
Para 5
Finally, control is returned to the host environment. If the value of status is zero or
EXIT_SUCCESS
, an implementation-de?ned form of the status successful termination is returned. If the value of status isEXIT_FAILURE
, an implementation-de?ned form of the status unsuccessful termination is returned. Otherwise the status returned is implementation-de?ned.
Yes, but when argument matching for a reference, the implicit array to pointer isn't automatic, so you need something like:
void foo( double (&array)[42] );
or
void foo( double (&array)[] );
Be aware, however, that when matching, double [42]
and double []
are
distinct types. If you have an array of an unknown dimension, it will
match the second, but not the first, and if you have an array with 42
elements, it will match the first but not the second. (The latter is,
IMHO, very counter-intuitive.)
In the second case, you'll also have to pass the dimension, since there's no way to recover it once you're inside the function.
Don't put the environment configuration in catalina.bat/catalina.sh. Instead you should create a new file in CATALINA_BASE\bin\setenv.bat to keep your customizations separate of tomcat installation.
Sure, just use the arguments
object.
function foo() {
for (var i = 0; i < arguments.length; i++) {
console.log(arguments[i]);
}
}
hi it worked for me from the recommended link from Fredy Andersen
sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql /lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
just had to change to my version of mysql, in the command, thanks
Better use int.TryParse
to avoid exceptions;
var numbers = sNumbers
.Split(',')
.Where(x => int.TryParse(x, out _))
.Select(int.Parse)
.ToList();
AFNetworking provides async image loading into a UIImageView with placeholder support. It also supports async networking for working with APIs in general.
I had the same problem as the OP except I remembered to declare the ReadOnlyVariables.
After some playing around, I discovered it was the name of my variable that was the issue. "File_Path" in SSIS somehow got converted to "FilePath". C# does not play nicely with underscores in variable names.
So to access the variable, I type
string fp = Variables.FilePath;
In the PreExecute() method of the Script Component.
If anyone wanted to download it as well.
Here is an awesome little function that will convert an array of JSON objects to csv, then download it.
downloadCSVFromJson = (filename, arrayOfJson) => {
// convert JSON to CSV
const replacer = (key, value) => value === null ? '' : value // specify how you want to handle null values here
const header = Object.keys(arrayOfJson[0])
let csv = arrayOfJson.map(row => header.map(fieldName =>
JSON.stringify(row[fieldName], replacer)).join(','))
csv.unshift(header.join(','))
csv = csv.join('\r\n')
// Create link and download
var link = document.createElement('a');
link.setAttribute('href', 'data:text/csv;charset=utf-8,%EF%BB%BF' + encodeURIComponent(csv));
link.setAttribute('download', filename);
link.style.visibility = 'hidden';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
};
Then call it like this:
this.downloadCSVFromJson(`myCustomName.csv`, this.state.csvArrayOfJson)
I found solution from here. And its working for me.
Check this, it may help you.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSExceptionDomains</key>
<dict>
<key>myDomain.com</key>
<dict>
<!--Include to allow subdomains-->
<key>NSIncludesSubdomains</key>
<true/>
<!--Include to allow HTTP requests-->
<key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
<true/>
<!--Include to specify minimum TLS version-->
<key>NSTemporaryExceptionMinimumTLSVersion</key>
<string>TLSv1.1</string>
</dict>
</dict>
</dict>
In addition to @Eric Bole-Feysot answer:
Thanks to satellite assemblies, localization can be created based on .dll/.exe files. This way:
There is a little known tool called LSACreator (free for non-commercial use or buy option) which allows you to create localization based on .dll/.exe files. In fact, internally (in language project's directory) it creates/manages localized versions of resx files and compiles an assembly in similar way as @Eric Bole-Feysot described.
try this jquery library, jQuery Print Element
http://projects.erikzaadi.com/jQueryPlugins/jQuery.printElement/
You can trick gem open
into displaying the gem path:
VISUAL=echo gem open gem-name
Example:
VISUAL=echo gem open rails
=> /usr/local/opt/asdf/installs/ruby/2.4.3/lib/ruby/gems/2.4.0/gems/rails-5.1.4
It just works, and no third party gem is necessary.
To my knowledge, no.
Circumstantial indications from $LC_CTYPE
, locale
and such might seem alluring, but these are completely separated from the encoding the terminal application (actually an emulator) happens to be using when displaying characters on the screen.
They only way to detect encoding for sure is to output something only present in the encoding, e.g. ä
, take a screenshot, analyze that image and check if the output character is correct.
So no, it's not possible, sadly.
add this line end of php.ini
openssl.cafile=/opt/lampp/share/curl/curl-ca-bundle.crt
may be curl path cannot be identified by PHP
None of answers do not work good enough for me, I see page jumping to anchor and then to top for some solutions, some answers do not work at all, may be things changed for years. Hope my function will help to someone.
/**
* Prevent automatic scrolling of page to anchor by browser after loading of page.
* Do not call this function in $(...) or $(window).on('load', ...),
* it should be called earlier, as soon as possible.
*/
function preventAnchorScroll() {
var scrollToTop = function () {
$(window).scrollTop(0);
};
if (window.location.hash) {
// handler is executed at most once
$(window).one('scroll', scrollToTop);
}
// make sure to release scroll 1 second after document readiness
// to avoid negative UX
$(function () {
setTimeout(
function () {
$(window).off('scroll', scrollToTop);
},
1000
);
});
}
BEGIN
For i in (select id, name, desc from table2)
LOOP
Update table1 set name = i.name, desc = i.desc where id = i.id and (name is null or desc is null);
END LOOP;
END;
Windows 10 or Windows Server 2016 provide such information in their standard task manager. A rare case for production, but if the target JVM is running on Windows, the simplest way to see its parameters is to press Ctrl+Alt+Delete, choose the Processes tab and add the Command line column (by clicking the right mouse button on any existing column header).
Try
let refresch = ()=> document.body.style= 'background: #'
+Math.random().toString(16).slice(-6);
let intId = setInterval(refresch, 1000);
let stop = ()=> clearInterval(intId);
_x000D_
body {transition: 1s}
_x000D_
<button onclick="stop()">Stop</button>
_x000D_
Install mysql and python via Macports The porters have done all the difficult work.
sudo port install py26-mysql
sudo port install mysql5-server
should install what you need. (see Stack overflow for comments re mysql server)
If you only need to connect to mysql and not run a server then the first line is sufficient.
Macports now (early 2013) will provide binary downloads for common combinations of OS a executable architecture, for others (and if you request it) it will build from source.
In general macports (or fink) help when there are complex libraries etc that need to be installed.
Python only code and if simple C dependencies can be set up via setuptools etc, but it begins to get complex if you mix the two.
That doesn't work because the second parameter should be a mapped entity and of course Integer is not a persistent class (since it doesn't have the @Entity annotation on it).
for you you should do the following:
Query q = em.createNativeQuery("select id from users where username = :username");
q.setParameter("username", "lt");
List<BigDecimal> values = q.getResultList();
or if you want to use HQL you can do something like this:
Query q = em.createQuery("select new Integer(id) from users where username = :username");
q.setParameter("username", "lt");
List<Integer> values = q.getResultList();
Regards.
UPDATE t1
INNER JOIN t2 ON t2.t1_id = t1.id
INNER JOIN t3 ON t2.t3_id = t3.id
SET t1.a = 'something',
t2.b = 42,
t3.c = t2.c
WHERE t1.a = 'blah';
To see what this is going to update, you can convert this into a select statement, e.g.:
SELECT t2.t1_id, t2.t3_id, t1.a, t2.b, t2.c AS t2_c, t3.c AS t3_c
FROM t1
INNER JOIN t2 ON t2.t1_id = t1.id
INNER JOIN t3 ON t2.t3_id = t3.id
WHERE t1.a = 'blah';
An example using the same tables as the other answer:
SELECT Books.BookID, Orders.OrderID,
Orders.Quantity AS CurrentQuantity,
Orders.Quantity + 2 AS NewQuantity,
Books.InStock AS CurrentStock,
Books.InStock - 2 AS NewStock
FROM Books
INNER JOIN Orders ON Books.BookID = Orders.BookID
WHERE Orders.OrderID = 1002;
UPDATE Books
INNER JOIN Orders ON Books.BookID = Orders.BookID
SET Orders.Quantity = Orders.Quantity + 2,
Books.InStock = Books.InStock - 2
WHERE Orders.OrderID = 1002;
EDIT:
Just for fun, let's add something a bit more interesting.
Let's say you have a table of books
and a table of authors
. Your books
have an author_id
. But when the database was originally created, no foreign key constraints were set up and later a bug in the front-end code caused some books to be added with invalid author_id
s. As a DBA you don't want to have to go through all of these books
to check what the author_id
should be, so the decision is made that the data capturers will fix the books
to point to the right authors
. But there are too many books to go through each one and let's say you know that the ones that have an author_id
that corresponds with an actual author
are correct. It's just the ones that have nonexistent author_id
s that are invalid. There is already an interface for the users to update the book details and the developers don't want to change that just for this problem. But the existing interface does an INNER JOIN authors
, so all of the books with invalid authors are excluded.
What you can do is this: Insert a fake author record like "Unknown author". Then update the author_id
of all the bad records to point to the Unknown author. Then the data capturers can search for all books with the author set to "Unknown author", look up the correct author and fix them.
How do you update all of the bad records to point to the Unknown author? Like this (assuming the Unknown author's author_id
is 99999):
UPDATE books
LEFT OUTER JOIN authors ON books.author_id = authors.id
SET books.author_id = 99999
WHERE authors.id IS NULL;
The above will also update books
that have a NULL
author_id
to the Unknown author. If you don't want that, of course you can add AND books.author_id IS NOT NULL
.
Without setting the width
, it will get the maximum width it can get. So you cannot see that the div
has centered.
#container
{
width: 50%;
height: auto;
margin: auto;
padding: 10px;
position: relative;
background-color: black; /* Just to see the different */
}
From MSDN
ReadOnlyCollection<TimeZoneInfo> zones = TimeZoneInfo.GetSystemTimeZones();
Console.WriteLine("The local system has the following {0} time zones", zones.Count);
foreach (TimeZoneInfo zone in zones)
Console.WriteLine(zone.Id);
best and simple way is to put title inside a span and replace then.
'<div id="'+div_id+'" class="widget" style="height:60px;width:110px">\n\
<div class="widget-head ui-widget-header"
style="cursor:move;height:20px;width:130px">'+
'<span id="'+span_id+'" style="float:right; cursor:pointer"
class="dialog_link ui-icon ui-icon-newwin ui-icon-pencil"></span>' +
'<span id="spTitle">'+
dialog_title+ '</span>'
'</div></div>
now you can simply use this:
$('#'+div_id+' .widget-head sp#spTitle').text("new dialog title");
Just a simple folder drill down.
sub sample()
Dim FileSystem As Object
Dim HostFolder As String
HostFolder = "C:\"
Set FileSystem = CreateObject("Scripting.FileSystemObject")
DoFolder FileSystem.GetFolder(HostFolder)
end sub
Sub DoFolder(Folder)
Dim SubFolder
For Each SubFolder In Folder.SubFolders
DoFolder SubFolder
Next
Dim File
For Each File In Folder.Files
' Operate on each file
Next
End Sub
A version of John's answer above that removes the pesky NA's:
stderr <- function(x, na.rm=FALSE) {
if (na.rm) x <- na.omit(x)
sqrt(var(x)/length(x))
}
you can simply write the following command in the terminal of your linux system and get the java path :- echo $JAVA_HOME
Throwing an exception is how getSingleResult()
indicates it can't be found. Personally I can't stand this kind of API. It forces spurious exception handling for no real benefit. You just have to wrap the code in a try-catch block.
Alternatively you can query for a list and see if its empty. That doesn't throw an exception. Actually since you're not doing a primary key lookup technically there could be multiple results (even if one, both or the combination of your foreign keys or constraints makes this impossible in practice) so this is probably the more appropriate solution.
I was able to fix it with the help of following headers
Access-Control-Allow-Origin
Access-Control-Allow-Headers
Access-Control-Allow-Credentials
Access-Control-Allow-Methods
If you are on Nodejs, here is the code you can copy/paste.
app.use((req, res, next) => {
res.header('Access-Control-Allow-Origin','*');
res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
res.header('Access-Control-Allow-Credentials', true);
res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH');
next();
});
This may be an old post, but if anyone is still facing this issue after trying all the above mentioned steps, ensure whether the default path of PowerShell module is specified under the "PSModulePath" environment variable.
The default path should be "%SystemRoot%\system32\WindowsPowerShell\v1.0\Modules\"
One liner that can work in either direction:
const range = (a,b)=>Array(Math.abs(a-b)+1).fill(a).map((v,i)=>v+i*(a>b?-1:1));
See in action:
const range = (a,b) => Array(Math.abs(a-b)+1).fill(a).map((v,i)=>v+i*(a>b?-1:1));
console.log(range(1,4));
console.log(range(4,1));
_x000D_
What is your project type? If it's a "Win32 project", your entry point should be (w)WinMain
. If it's a "Win32 Console Project", then it should be (w)main
. The name _tmain
is #defined to be either main
or wmain
depending on whether UNICODE is defined or not.
If it's a DLL, then DllMain
.
The project type can be seen under project properties, Linker, System, Subsystem. It would say either "Console" or "Windows".
Note that the entry point name varies depending on whether UNICODE is defined or not. In VS2008, it's defined by default.
The proper prototype for main is either
int _tmain(int argc, _TCHAR* argv[])
or
int _tmain()
Make sure it's one of those.
EDIT:
If you're getting an error on _TCHAR, place an
#include <tchar.h>
If you think the issue is with one of the headers, go to the properties of the file with main(), and under Preprocessor, enable generating of the preprocessed file. Then compile. You'll get a file with the same name a .i extension. Open it, and see if anything unsavory happened to the main() function. There can be rogue #defines in theory...
EDIT2:
With UNICODE defined (which is the default), the linker expects the entry point to be wmain(), not main(). _tmain has the advantage of being UNICODE-agnostic - it translates to either main or wmain.
Some time ago, there was a reason to maintain both an ANSI build and a Unicode build. Unicode support was sorely incomplete in Windows 95/98/Me. The primary APIs were ANSI, and Unicode versions existed here and there, but not pervasively. Also, the VS debugger had trouble displaying Unicode strings. In the NT kernel OSes (that's Windows 2000/XP/Vista/7/8/10), Unicode support is primary, and ANSI functions are added on top. So ever since VS2005, the default upon project creation is Unicode. That means - wmain. They could not keep the same entry point name because the parameter types are different. _TCHAR is #defined to be either char or wchar_t. So _tmain is either main(int argc, char **argv) or wmain(int argc, wchar_t **argv).
The reason you were getting an error at _tmain
at some point was probably because you did not change the type of argv
to _TCHAR**
.
If you're not planning to ever support ANSI (probably not), you can reformulate your entry point as
int wmain(int argc, wchar_t *argv[])
and remove the tchar.h
include line.
Even at the time of this question, over 3 years ago, Sage (which is completely free) existed and was pretty good at graph theory. But, in 2012 it is about the best graph theory tool there is. Thus, Sage already has a huge amount of graph theory material built in, including other free and open source stuff that is out there. So, simply messing around with various things to learn more is easy as no programming is required.
And, if you are interested in the programming part as well, first Sage is open source so you can see any code that already exists. And, second, you can re-program any function you want if you really want to practice, or you can be the first to program something that does not already exist. In the latter case, you can even submit that new functionality and make Sage better for all other users.
At this time, this answer may not be that useful to the OP (since it has been 3 years), but hopefully it is useful to any one else who sees this question in the future.
if ($done)
{
header("Location: /url/to/the/other/page");
exit;
}
If your viewport gets scrolled after the dialog displays, it will no longer be centered. It's possible to unintentionally cause the viewport to scroll by adding/removing content from the page. You can recenter the dialog window during scroll/resize events by calling:
$('my-selector').dialog('option', 'position', 'center');
You cannot add a column with a default value in Hive. You have the right syntax for adding the column ALTER TABLE test1 ADD COLUMNS (access_count1 int);
, you just need to get rid of default sum(max_count)
. No changes to that files backing your table will happen as a result of adding the column. Hive handles the "missing" data by interpreting NULL
as the value for every cell in that column.
So now your have the problem of needing to populate the column. Unfortunately in Hive you essentially need to rewrite the whole table, this time with the column populated. It may be easier to rerun your original query with the new column. Or you could add the column to the table you have now, then select all of its columns plus value for the new column.
You also have the option to always COALESCE
the column to your desired default and leave it NULL
for now. This option fails when you want NULL
to have a meaning distinct from your desired default. It also requires you to depend on always remembering to COALESCE
.
If you are very confident in your abilities to deal with the files backing Hive, you could also directly alter them to add your default. In general I would recommend against this because most of the time it will be slower and more dangerous. There might be some case where it makes sense though, so I've included this option for completeness.
Example for OUT : Variable gets value initialized after going into the method. Later the same value is returned to the main method.
namespace outreftry
{
class outref
{
static void Main(string[] args)
{
yyy a = new yyy(); ;
// u can try giving int i=100 but is useless as that value is not passed into
// the method. Only variable goes into the method and gets changed its
// value and comes out.
int i;
a.abc(out i);
System.Console.WriteLine(i);
}
}
class yyy
{
public void abc(out int i)
{
i = 10;
}
}
}
Output:
10
===============================================
Example for Ref : Variable should be initialized before going into the method. Later same value or modified value will be returned to the main method.
namespace outreftry
{
class outref
{
static void Main(string[] args)
{
yyy a = new yyy(); ;
int i = 0;
a.abc(ref i);
System.Console.WriteLine(i);
}
}
class yyy
{
public void abc(ref int i)
{
System.Console.WriteLine(i);
i = 10;
}
}
}
Output:
0 10
=================================
Hope its clear now.
If one want to keep getting updated processes (on the example, 2 seconds) on a shell session without having to manually interact with it use:
watch -n 2 'mysql -h 127.0.0.1 -P 3306 -u some_user -psome_pass some_database -e "show full processlist;"'
The only bad thing about the show [full] processlist
is that you can't filter the output result. On the other hand, issuing the SELECT * FROM INFORMATION_SCHEMA.PROCESSLIST
open possibilities to remove from the output anything you don't want to see:
SELECT * from INFORMATION_SCHEMA.PROCESSLIST
WHERE DB = 'somedatabase'
AND COMMAND <> 'Sleep'
AND HOST NOT LIKE '10.164.25.133%' \G