Edit 2: See @flodel's answer. Much better.
Try:
# assuming SFI is your data.frame
as.matrix(sapply(SFI, as.numeric))
Edit: or as @ CarlWitthoft suggested in the comments:
matrix(as.numeric(unlist(SFI)),nrow=nrow(SFI))
My experience when using Dapper to connect to MySQL is that it does matter. I changed a non nullable bit(1) to a nullable tinyint(1) by using the following script:
ALTER TABLE TableName MODIFY Setting BOOLEAN null;
Then Dapper started throwing Exceptions. I tried to look at the difference before and after the script. And noticed the bit(1) had changed to tinyint(1).
I then ran:
ALTER TABLE TableName CHANGE COLUMN Setting Setting BIT(1) NULL DEFAULT NULL;
Which solved the problem.
According to the api docs, doing:
dataFrame1.except(dataFrame2)
will return a new DataFrame containing rows in dataFrame1 but not in dataframe2.
You might also check out YUI Logger. All you have to do to use it is include a couple of tags in your HTML. It is a helpful addition to Firebug, which is more or less a must.
I used the CSS in the accepted answer here for my responsive YouTube videos - worked great right up until YouTube updated their system around the start of August 2015. The videos on YouTube are the same dimensions but for whatever reason the CSS in the accepted answer now letterboxes all our videos. Black bands across top and bottom.
I've tickered around with the sizes and settled on getting rid of the top padding and changing the bottom padding to 56.45%
. Seems to look good.
.videowrapper {
position: relative;
padding-bottom: 56.45%;
height: 0;
}
At this time, the most authoritative answer appears to be in this issue, which states "it is a custom build of jQuery that excludes effects, ajax, and deprecated code." Details will be announced with jQuery 3.0.
I suspect that the rationale for excluding these components of the jQuery library is in recognition of the increasingly common scenario of jQuery being used in conjunction with another JS framework like Angular or React. In these cases, the usage of jQuery is primarily for DOM traversal and manipulation, so leaving out those components that are either obsolete or are provided by the framework gains about a 20% reduction in file size.
MyClass myInstance = (MyClass) Class.forName("MyClass").newInstance();
The /P
switch allows you to set the value of a variable to a line of input entered by the user. Displays the specified promptString before reading the line of input. The promptString can be empty.
Two ways I've used it... first:
SET /P variable=
When batch file reaches this point (when left blank) it will halt and wait for user input. Input then becomes variable.
And second:
SET /P variable=<%temp%\filename.txt
Will set variable to contents (the first line) of the txt file. This method won't work unless the /P
is included. Both tested on Windows 8.1 Pro, but it's the same on 7 and 10.
This question is quite broad, so I'm going to give a couple of solutions.
Here's an example of using a Helper Method that you could change to fit your needs:
class SerializationHelper {
static toInstance<T>(obj: T, json: string) : T {
var jsonObj = JSON.parse(json);
if (typeof obj["fromJSON"] === "function") {
obj["fromJSON"](jsonObj);
}
else {
for (var propName in jsonObj) {
obj[propName] = jsonObj[propName]
}
}
return obj;
}
}
Then using it:
var json = '{"name": "John Doe"}',
foo = SerializationHelper.toInstance(new Foo(), json);
foo.GetName() === "John Doe";
Advanced Deserialization
This could also allow for some custom deserialization by adding your own fromJSON
method to the class (this works well with how JSON.stringify
already uses the toJSON
method, as will be shown):
interface IFooSerialized {
nameSomethingElse: string;
}
class Foo {
name: string;
GetName(): string { return this.name }
toJSON(): IFooSerialized {
return {
nameSomethingElse: this.name
};
}
fromJSON(obj: IFooSerialized) {
this.name = obj.nameSomethingElse;
}
}
Then using it:
var foo1 = new Foo();
foo1.name = "John Doe";
var json = JSON.stringify(foo1);
json === '{"nameSomethingElse":"John Doe"}';
var foo2 = SerializationHelper.toInstance(new Foo(), json);
foo2.GetName() === "John Doe";
Another way you could do this is by creating your own base class:
class Serializable {
fillFromJSON(json: string) {
var jsonObj = JSON.parse(json);
for (var propName in jsonObj) {
this[propName] = jsonObj[propName]
}
}
}
class Foo extends Serializable {
name: string;
GetName(): string { return this.name }
}
Then using it:
var foo = new Foo();
foo.fillFromJSON(json);
There's too many different ways to implement a custom deserialization using a base class so I'll leave that up to how you want it.
I tried @Mr. Stark answer. It didn't work. It failed to install the drive. I have Samsung S8 plus. I enabled the debugging mode on device then installed Android USB Driver for Windows from Samsung site, it works.
Use if foo
or if not foo
. There isn't any need for either ==
or is
for that.
For checking against None, is None
and is not None
are recommended. This allows you to distinguish it from False (or things that evaluate to False, like ""
and []
).
Whether get_attr
should return None
would depend on the context. You might have an attribute where the value is None, and you wouldn't be able to do that. I would interpret None
as meaning "unset", and a KeyError
would mean the key does not exist in the file.
To redirect your logs output to a file, you need to use the FileAppender and need to define other file details in your log4j.properties/xml file. Here is a sample properties file for the same:
# Root logger option
log4j.rootLogger=INFO, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=C:\\loging.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
Follow this tutorial to learn more about log4j usage:
http://www.mkyong.com/logging/log4j-log4j-properties-examples/
Here's one that creates a multidimensional array sorted by offset and niceified name:
function timezones() {
$timezones = [];
foreach (timezone_identifiers_list() as $timezone) {
$datetime = new \DateTime('now', new DateTimeZone($timezone));
$timezones[] = [
'sort' => str_replace(':', '', $datetime->format('P')),
'offset' => $datetime->format('P'),
'name' => str_replace('_', ' ', implode(', ', explode('/', $timezone))),
'timezone' => $timezone,
];
}
usort($timezones, function($a, $b) {
return $a['sort'] - $b['sort'] ?: strcmp($a['name'], $b['name']);
});
return $timezones;
}
foreach (timezones() as $timezone) {
echo '(UTC '.$timezone['offset'].') '.$timezone['name'].'<br>';
}
Echos:
(UTC -11:00) Pacific, Midway
(UTC -11:00) Pacific, Niue
(UTC -11:00) Pacific, Pago Pago
(UTC -10:00) Pacific, Honolulu
(UTC -10:00) Pacific, Johnston
(UTC -10:00) Pacific, Rarotonga
(UTC -10:00) Pacific, Tahiti
(UTC -09:30) Pacific, Marquesas
(UTC -09:00) America, Adak
(UTC -09:00) Pacific, Gambier
(UTC -08:00) America, Anchorage
(UTC -08:00) America, Juneau
...
If you installed opencv 2.4.2 then you need to change the -lopencv_core240
to -lopencv_core242
I made the same mistake.
I also got same error, but in my case main problem was in where condition the parameter that i'm checking was having some unknown hidden character (+%A0)
When A0 convert I got 160 but 160 was out of the range of the character that db knows, that's why database cannot recognize it as character other thing is my table column is varchar
the solution that I did was I checked there is some characters like that and remove those before run the sql command
ex:- preg_replace('/\D/', '', $myParameter);
You can use the ProcessExit
event of the AppDomain
:
class Program
{
static void Main(string[] args)
{
AppDomain.CurrentDomain.ProcessExit += new EventHandler(CurrentDomain_ProcessExit);
// do some work
}
static void CurrentDomain_ProcessExit(object sender, EventArgs e)
{
Console.WriteLine("exit");
}
}
Update
Here is a full example program with an empty "message pump" running on a separate thread, that allows the user to input a quit command in the console to close down the application gracefully. After the loop in MessagePump you will probably want to clean up resources used by the thread in a nice manner. It's better to do that there than in ProcessExit for several reasons:
Here is the code:
class Program
{
private static bool _quitRequested = false;
private static object _syncLock = new object();
private static AutoResetEvent _waitHandle = new AutoResetEvent(false);
static void Main(string[] args)
{
AppDomain.CurrentDomain.ProcessExit += new EventHandler(CurrentDomain_ProcessExit);
// start the message pumping thread
Thread msgThread = new Thread(MessagePump);
msgThread.Start();
// read input to detect "quit" command
string command = string.Empty;
do
{
command = Console.ReadLine();
} while (!command.Equals("quit", StringComparison.InvariantCultureIgnoreCase));
// signal that we want to quit
SetQuitRequested();
// wait until the message pump says it's done
_waitHandle.WaitOne();
// perform any additional cleanup, logging or whatever
}
private static void SetQuitRequested()
{
lock (_syncLock)
{
_quitRequested = true;
}
}
private static void MessagePump()
{
do
{
// act on messages
} while (!_quitRequested);
_waitHandle.Set();
}
static void CurrentDomain_ProcessExit(object sender, EventArgs e)
{
Console.WriteLine("exit");
}
}
After editing @Wesley Rice's answer a couple times, I decided my changes were just getting too big to continue changing his answer instead of writing my own. So, I decided I need to write my own!
Read each line of a file in and operate on it line-by-line like this:
#!/bin/bash
input="/path/to/txt/file"
while IFS= read -r line
do
echo "$line"
done < "$input"
This comes directly from author Vivek Gite here: https://www.cyberciti.biz/faq/unix-howto-read-line-by-line-from-file/. He gets the credit!
Syntax: Read file line by line on a Bash Unix & Linux shell:
1. The syntax is as follows for bash, ksh, zsh, and all other shells to read a file line by line
2.while read -r line; do COMMAND; done < input.file
3. The-r
option passed to read command prevents backslash escapes from being interpreted.
4. AddIFS=
option before read command to prevent leading/trailing whitespace from being trimmed -
5.while IFS= read -r line; do COMMAND_on $line; done < input.file
And now to answer this now-closed question which I also had: Is it possible to `git add` a list of files from a file? - here's my answer:
Note that FILES_STAGED
is a variable containing the absolute path to a file which contains a bunch of lines where each line is a relative path to a file I'd like to do git add
on. This code snippet is about to become part of the "eRCaGuy_dotfiles/useful_scripts/sync_git_repo_to_build_machine.sh" file in this project, to enable easy syncing of files in development from one PC (ex: a computer I code on) to another (ex: a more powerful computer I build on): https://github.com/ElectricRCAircraftGuy/eRCaGuy_dotfiles.
while IFS= read -r line
do
echo " git add \"$line\""
git add "$line"
done < "$FILES_STAGED"
git add
on it: Is it possible to `git add` a list of files from a file?For Spring Boot - React js apps I added @CrssOrigin annotation on the controller and it works:
@CrossOrigin(origins = {"http://localhost:3000"})
@RestController
@RequestMapping("/api")
But take care to add localhost correct => 'http://localhost:3000', not with '/' at the end => 'http://localhost:3000/', this was my problem.
It's an excellent question, I had the same question yesterday. I thought about this problem, specifically SEARCHED if existed something like "ON UPDATE CASCADE" and fortunately the designers of SQL had also thought about that. I agree with Ted.strauss, and I also commented Noran's case.
When did I use it? Like Ted pointed out, when you are treating several databases at one time, and the modification in one of them, in one table, has any kind of reproduction in what Ted calls "satellite database", can't be kept with the very original ID, and for any reason you have to create a new one, in case you can't update the data on the old one (for example due to permissions, or in case you are searching for fastness in a case that is so ephemeral that doesn't deserve the absolute and utter respect for the total rules of normalization, simply because will be a very short-lived utility)
So, I agree in two points:
(A.) Yes, in many times a better design can avoid it; BUT
(B.) In cases of migrations, replicating databases, or solving emergencies, it's a GREAT TOOL that fortunately was there when I went to search if it existed.
RaYell,
You don't need to parse the value returned. document.getElementById("FileUpload1").value
returns only the file name with extension.
This was useful for me because I wanted to copy the name of the file to be uploaded to an input box called 'title'. In my application, the uploaded file is renamed to the index generated by the backend database and the title is stored in the database.
You don't need to import QuartzCore.h
now. Taking iOS 8 sdk and Xcode 6.1 in referrence.
Directly use:
[[myButton layer] setBorderWidth:2.0f];
[[myButton layer] setBorderColor:[UIColor greenColor].CGColor];
var inputs = document.getElementsByTagName('input');
for (var i = 0; i < inputs.length; ++i) {
// ...
}
This CSS also shows a fixed height HTML table. It sets the height of the HTML tbody to 400 pixels and the HTML tbody scrolls when the it is larger, retaining the HTML thead as a non-scrolling element.
In addition, each th cell in the heading and each td cell the body should be styled for the desired fixed width.
#the-table {
display: block;
background: white; /* optional */
}
#the-table thead {
text-align: left; /* optional */
}
#the-table tbody {
display: block;
max-height: 400px;
overflow-y: scroll;
}
delegates are the best option for sending data from one form to another.
public partial class frmImportContact : Form
{
public delegate void callback_data(string someData);
public event callback_data getData_CallBack;
private void button_Click(object sender, EventArgs e)
{
string myData = "Top Secret Data To Share";
getData_CallBack(myData);
}
}
public partial class frmHireQuote : Form
{
private void Button_Click(object sender, EventArgs e)
{
frmImportContact obj = new frmImportContact();
obj.getData_CallBack += getData;
}
private void getData(string someData)
{
MessageBox.Show("someData");
}
}
A simple and lightweight template as well:
input[type=checkbox] {_x000D_
cursor: pointer;_x000D_
}_x000D_
_x000D_
input[type=checkbox]:checked:before {_x000D_
content: "\2713";_x000D_
background: #fffed5;_x000D_
text-shadow: 1px 1px 1px rgba(0, 0, 0, .2);_x000D_
font-size: 20px;_x000D_
text-align: center;_x000D_
line-height: 8px;_x000D_
display: inline-block;_x000D_
width: 13px;_x000D_
height: 15px;_x000D_
color: #00904f;_x000D_
border: 1px solid #cdcdcd;_x000D_
border-radius: 4px;_x000D_
margin: -3px -3px;_x000D_
text-indent: 1px;_x000D_
}_x000D_
_x000D_
input[type=checkbox]:before {_x000D_
content: "\202A";_x000D_
background: #ffffff;_x000D_
text-shadow: 1px 1px 1px rgba(0, 0, 0, .2);_x000D_
font-size: 20px;_x000D_
text-align: center;_x000D_
line-height: 8px;_x000D_
display: inline-block;_x000D_
width: 13px;_x000D_
height: 15px;_x000D_
color: #00904f;_x000D_
border: 1px solid #cdcdcd;_x000D_
border-radius: 4px;_x000D_
margin: -3px -3px;_x000D_
text-indent: 1px;_x000D_
}
_x000D_
<input type="checkbox" checked="checked">checked1<br>_x000D_
<input type="checkbox">unchecked2<br>_x000D_
<input type="checkbox" checked="checked" id="id1">_x000D_
<label for="id1">checked2+label</label><br>_x000D_
<label for="id2">unchecked2+label+rtl</label>_x000D_
<input type="checkbox" id="id2">_x000D_
<br>
_x000D_
Your call to MessageBox.Show
needs to pass MessageBoxButtons.YesNo
to get the Yes/No buttons instead of the OK button.
Compare the result of that call (which will block execution until the dialog returns) to DialogResult.Yes
....
if (MessageBox.Show("Are you sure?", "Confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
// user clicked yes
}
else
{
// user clicked no
}
You could achieve this by setting the list-style-type
to none
, and setting the background-image
of a list element to a generic bullet, like so:
ul {
list-style-type: none;
}
li {
background-image: url(bullet.jpg);
background-repeat: no-repeat;
background-position: 0px 50%;
padding-left: 7px;
}
The outcome would look a little something like this:
With this approach, you aren't adding unnecessary span
(or other) elements to your lists, which is arguably more practical (for later extendibility and other semantic reasons).
This is what I used
public static Toast displayCustomToast(FragmentActivity mAct, String toastText, String toastLength, String succTypeColor) {
final Toast toast;
if (toastLength.equals("short")) {
toast = Toast.makeText(mAct, toastText, Toast.LENGTH_SHORT);
} else {
toast = Toast.makeText(mAct, toastText, Toast.LENGTH_LONG);
}
View tView = toast.getView();
tView.setBackgroundColor(Color.parseColor("#053a4d"));
TextView mText = (TextView) tView.findViewById(android.R.id.message);
mText.setTypeface(applyFont(mAct));
mText.setShadowLayer(0, 0, 0, 0);
tView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
toast.cancel();
}
});
tView.invalidate();
if (succTypeColor.equals("red")) {
mText.setTextColor(Color.parseColor("#debe33"));
tView.setBackground(mAct.getResources().getDrawable(R.drawable.toast_rounded_red));
// this is to show error message
}
if (succTypeColor.equals("green")) {
mText.setTextColor(Color.parseColor("#053a4d"));
tView.setBackground(mAct.getResources().getDrawable(R.drawable.toast_rounded_green));
// this is to show success message
}
return toast;
}
While calling just write below.
AllMethodsInOne.displayCustomToast(act, "This is custom toast", "long", "red").show();
The Android Studio website has recently (I think) provided some advice what kind of messages to expect from different log levels that may be useful along with Kurtis' answer:
I got this error because I didn't create my own test suite correctly:
Here is how I did it correctly:
Put this in Foobar.java
:
public class Foobar{
public int getfifteen(){
return 15;
}
}
Put this in FoobarTest.java
:
import static org.junit.Assert.*;
import junit.framework.JUnit4TestAdapter;
import org.junit.Test;
public class FoobarTest {
@Test
public void mytest() {
Foobar f = new Foobar();
assert(15==f.getfifteen());
}
public static junit.framework.Test suite(){
return new JUnit4TestAdapter(FoobarTest.class);
}
}
Download junit4-4.8.2.jar
I used the one from here:
http://www.java2s.com/Code/Jar/j/Downloadjunit4jar.htm
Compile it:
javac -cp .:./libs/junit4-4.8.2.jar Foobar.java FoobarTest.java
Run it:
el@failbox /home/el $ java -cp .:./libs/* org.junit.runner.JUnitCore FoobarTest
JUnit version 4.8.2
.
Time: 0.009
OK (1 test)
One test passed.
This solution worked for me in ASP.NET 4.5 using a Web Forms site.
<configuration>
<system.web>
<machineKey ... />
</system.web>
</configuration>
You should not see the viewstate Mac failed error anymore. Each website in the same app pool should have a separate machine key otherwise this error will continue.
I recently experienced the error, and none of the solutions worked for me. What resolved the error for me was adding the Application pool user to the Power Users group in computer management. I couldn't use the Administrator group due to a company policy.
Since this the top google result, this is what worked for me:
Update, if you have npm v5, use npx:
npx rimraf ./**/node_modules
Otherwise install RimRaf:
npm install rimraf -g
And in the project folder delete the node_modules folder with:
rimraf node_modules
If you want to recursively delete:
rimraf .\**\node_modules
[ http://www.nikola-breznjak.com/blog/nodejs/how-to-delete-node_modules-folder-on-windows-machine/ ]
You must check out node-php-fpm
.
Second variant in question post is not ok, because, if you already have file with the same name, but it is not a directory, !file_exists($dir)
will return false
, folder will not be created, so error "failed to open stream: No such file or directory"
will be occured. In Windows there is a difference between 'file' and 'folder' types, so need to use file_exists()
and is_dir()
at the same time, for ex.:
if (file_exists('file')) {
if (!is_dir('file')) { //if file is already present, but it's not a dir
//do something with file - delete, rename, etc.
unlink('file'); //for example
mkdir('file', NEEDED_ACCESS_LEVEL);
}
} else { //no file exists with this name
mkdir('file', NEEDED_ACCESS_LEVEL);
}
I'm not sure exactly what you mean by "full Git Bash environment", but I get the nice prompt if I do
"C:\Program Files\Git\bin\sh.exe" --login
In PowerShell
& 'C:\Program Files\Git\bin\sh.exe' --login
The --login
switch makes the shell execute the login shell startup files.
You can refer this link for check if a image file exists with JavaScript.
checkImageExist.js:
var image = new Image(); var url_image = './ImageFolder/' + variable + '.jpg'; image.src = url_image; if (image.width == 0) { return `<img src='./ImageFolder/defaultImage.jpg'>`; } else { return `<img src='./ImageFolder/`+variable+`.jpg'`; } } ```
This error also occurs if you have a block with no statements in it
For example:
def my_function():
for i in range(1,10):
def say_hello():
return "hello"
Notice that the for
block is empty. You can use the pass statement if you want to test the remaining code in the module.
If you want to avoid hardcoding your keystore & password in build.gradle, you can use a properties file as explained here: HANDLING SIGNING CONFIGS WITH GRADLE
Basically:
1) create a myproject.properties file at /home/[username]/.signing with such contents:
keystore=[path to]\release.keystore
keystore.password=*********
keyAlias=***********
keyPassword=********
2) create a gradle.properties file (perhaps at the root of your project directory) with the contents:
MyProject.properties=/home/[username]/.signing/myproject.properties
3) refer to it in your build.gradle like this:
if(project.hasProperty("MyProject.properties")
&& new File(project.property("MyProject.properties")).exists()) {
Properties props = new Properties()
props.load(new FileInputStream(file(project.property("MyProject.properties"))))
signingConfigs {
release {
storeFile file(props['keystore'])
storePassword props['keystore.password']
keyAlias props['keyAlias']
keyPassword props['keyPassword']
}
}
}
It's document.getElementById()
and not document.getElementByID()
. Check the casing for Id
.
The list()
function [docs] will convert a string into a list of single-character strings.
>>> list('hello')
['h', 'e', 'l', 'l', 'o']
Even without converting them to lists, strings already behave like lists in several ways. For example, you can access individual characters (as single-character strings) using brackets:
>>> s = "hello"
>>> s[1]
'e'
>>> s[4]
'o'
You can also loop over the characters in the string as you can loop over the elements of a list:
>>> for c in 'hello':
... print c + c,
...
hh ee ll ll oo
You partial looks much like an editor template so you could include it as such (assuming of course that your partial is placed in the ~/views/controllername/EditorTemplates
subfolder):
@Html.EditorFor(model => model.SomePropertyOfTypeLocaleBaseModel)
Or if this is not the case simply:
@Html.Partial("nameOfPartial", Model)
ASP.Net applications come pre-wired with a handlers section in the web.config. By default, this is set to readonly within feature delegation within IIS. Take a look in IIS Manager
1.Go to IIS Manager and click Server Name
2.Go to the section Management and click Feature Delegation.
3.Select the Handler Mappings which is supposed to set as readonly.
4.Change the value to read/write and now you can get resolved the issue
var EM = new events_managment();
EM.addEvent(window, 'resize', function(win,doc, event_){
console.log('resized');
//EM.removeEvent(win,doc, event_);
});
function events_managment(){
this.events = {};
this.addEvent = function(node, event_, func){
if(node.addEventListener){
if(event_ in this.events){
node.addEventListener(event_, function(){
func(node, event_);
this.events[event_](win_doc, event_);
}, true);
}else{
node.addEventListener(event_, function(){
func(node, event_);
}, true);
}
this.events[event_] = func;
}else if(node.attachEvent){
var ie_event = 'on' + event_;
if(ie_event in this.events){
node.attachEvent(ie_event, function(){
func(node, ie_event);
this.events[ie_event]();
});
}else{
node.attachEvent(ie_event, function(){
func(node, ie_event);
});
}
this.events[ie_event] = func;
}
}
this.removeEvent = function(node, event_){
if(node.removeEventListener){
node.removeEventListener(event_, this.events[event_], true);
this.events[event_] = null;
delete this.events[event_];
}else if(node.detachEvent){
node.detachEvent(event_, this.events[event_]);
this.events[event_] = null;
delete this.events[event_];
}
}
}
First we must ensure that the desired attribute is loaded, and then output it. Use this:
$product = Mage::getModel('catalog/product')->load('<product_id>', array('<attribute_code>'));
$attributeValue = $product->getResource()->getAttribute('<attribute_code>')->getFrontend()->getValue($product);
Use break
.
Unrelated to your question, I see in your code the line:
Violated = !(name.firstname == null) ? false : true;
In this line, you take a boolean value (name.firstname == null)
. Then, you apply the !
operator to it. Then, if the value is true, you set Violated to false; otherwise to true. So basically, Violated is set to the same value as the original expression (name.firstname == null)
. Why not use that, as in:
Violated = (name.firstname == null);
For those actually wanting to do a JOIN
you can also use:
UPDATE a
SET price = b_alias.unit_price
FROM a AS a_alias
LEFT JOIN b AS b_alias ON a_alias.b_fk = b_alias.id
WHERE a_alias.unit_name LIKE 'some_value'
AND a.id = a_alias.id;
You can use the a_alias in the SET
section on the right of the equals sign if needed.
The fields on the left of the equals sign don't require a table reference as they are deemed to be from the original "a" table.
There is not a really pythonic way of repeating something. However, it is a better way:
map(lambda index:do_something(), xrange(10))
If you need to pass the index then:
map(lambda index:do_something(index), xrange(10))
Consider that it returns the results as a collection. So, if you need to collect the results it can help.
The main differences between InnoDB and MyISAM ("with respect to designing a table or database" you asked about) are support for "referential integrity" and "transactions".
If you need the database to enforce foreign key constraints, or you need the database to support transactions (i.e. changes made by two or more DML operations handled as single unit of work, with all of the changes either applied, or all the changes reverted) then you would choose the InnoDB engine, since these features are absent from the MyISAM engine.
Those are the two biggest differences. Another big difference is concurrency. With MyISAM, a DML statement will obtain an exclusive lock on the table, and while that lock is held, no other session can perform a SELECT or a DML operation on the table.
Those two specific engines you asked about (InnoDB and MyISAM) have different design goals. MySQL also has other storage engines, with their own design goals.
So, in choosing between InnoDB and MyISAM, the first step is in determining if you need the features provided by InnoDB. If not, then MyISAM is up for consideration.
A more detailed discussion of differences is rather impractical (in this forum) absent a more detailed discussion of the problem space... how the application will use the database, how many tables, size of the tables, the transaction load, volumes of select, insert, updates, concurrency requirements, replication features, etc.
The logical design of the database should be centered around data analysis and user requirements; the choice to use a relational database would come later, and even later would the choice of MySQL as a relational database management system, and then the selection of a storage engine for each table.
This worked for me in Kotlin class
fun hideKeyboard(activity: Activity) {
try {
val inputManager = activity
.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
val currentFocusedView = activity.currentFocus
if (currentFocusedView != null) {
inputManager.hideSoftInputFromWindow(currentFocusedView.windowToken, InputMethodManager.HIDE_NOT_ALWAYS)
}
} catch (e: Exception) {
e.printStackTrace()
}
}
In my scenario i have make this via below code in nginx vhost configuration
server {
server_name dashboards.etilize.com;
location / {
proxy_pass http://demo.etilize.com/dashboards/;
proxy_set_header Host $http_host;
}}
$http_host will set URL in Header same as requested
To pass a NULL to MySQL, you do just that.
INSERT INTO table (field,field2) VALUES (NULL,3)
So, in your code, check if $intLat, $intLng
are empty
, if they are, use NULL
instead of '$intLat'
or '$intLng'
.
$intLat = !empty($intLat) ? "'$intLat'" : "NULL";
$intLng = !empty($intLng) ? "'$intLng'" : "NULL";
$query = "INSERT INTO data (notes, id, filesUploaded, lat, lng, intLat, intLng)
VALUES ('$notes', '$id', TRIM('$imageUploaded'), '$lat', '$long',
$intLat, $intLng)";
You can easily expand it to split on multiple indexes, and to take an array or string
const splitOn = (slicable, ...indices) =>
[0, ...indices].map((n, i, m) => slicable.slice(n, m[i + 1]));
splitOn('foo', 1);
// ["f", "oo"]
splitOn([1, 2, 3, 4], 2);
// [[1, 2], [3, 4]]
splitOn('fooBAr', 1, 4);
// ["f", "ooB", "Ar"]
lodash issue tracker: https://github.com/lodash/lodash/issues/3014
Save to local storage
localStorage.setItem('currentUser', JSON.stringify({ token: token, name: name }));
Load from local storage
var currentUser = JSON.parse(localStorage.getItem('currentUser'));
var token = currentUser.token; // your token
For more I suggest you go through this tutorial: Angular 2 JWT Authentication Example & Tutorial
OFFSET is what you are looking for.
SELECT * FROM table LIMIT 10 OFFSET 10
You can use Func<T, TResult>
generic delegate. (See MSDN)
Func<MyType, ReturnType> func = (db) => { return new MyType(); }
Also there are useful generic delegates which considers a return value:
Method:
public MyType SimpleUsing.DoUsing<MyType>(Func<TInput, MyType> myTypeFactory)
Generic delegate:
Func<InputArgumentType, MyType> createInstance = db => return new MyType();
Execute:
MyType myTypeInstance = SimpleUsing.DoUsing(
createInstance(new InputArgumentType()));
OR explicitly:
MyType myTypeInstance = SimpleUsing.DoUsing(db => return new MyType());
If you are testing a logic class and it is calling some internal void methods the doNothing is perfect.
For that I have written the following code in the "ActionPeformed(...)" method of the "Start" button
You need that code to be in the actionPerformed(...)
of the ActionListener
registered with the Start button, not for the Start button itself.
You can add a simple ActionListener
like this:
JButton startButton = new JButton("Start");
startButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
startButton.setEnabled(false);
stopButton.setEnabled(true);
}
}
);
note that your startButton above will need to be final
in the above example if you want to create the anonymous listener in local scope.
select
username,
osuser,
terminal,
utl_inaddr.get_host_address(terminal) IP_ADDRESS
from
v$session
where
username is not null
order by
username,
osuser;
-Xmn : the size of the heap for the young generation Young generation represents all the objects which have a short life of time. Young generation objects are in a specific location into the heap, where the garbage collector will pass often. All new objects are created into the young generation region (called "eden"). When an object survive is still "alive" after more than 2-3 gc cleaning, then it will be swap has an "old generation" : they are "survivor" .
Good size is 33%
You could also use INDEX MATCH
, which is more "powerful" than vlookup. This would give you exactly what you are looking for:
Don't escape the underscore. Might be causing some whackness.
There's a good topic about this in Stack Overflow question Is 'yield return' slower than "old school" return?.
It says:
ReadAllLines loads all of the lines into memory and returns a string[]. All well and good if the file is small. If the file is larger than will fit in memory, you'll run out of memory.
ReadLines, on the other hand, uses yield return to return one line at a time. With it, you can read any size file. It doesn't load the whole file into memory.
Say you wanted to find the first line that contains the word "foo", and then exit. Using ReadAllLines, you'd have to read the entire file into memory, even if "foo" occurs on the first line. With ReadLines, you only read one line. Which one would be faster?
I think the best easy way in this case is to use parseToStringDate which is part of GDK (Groovy JDK enhancements):
Parse a String matching the pattern EEE MMM dd HH:mm:ss zzz yyyy containing US-locale-constants only (e.g. Sat for Saturdays). Such a string is generated by the toString method of Date
Example:
println(Date.parseToStringDate("Tue Aug 10 16:02:43 PST 2010").format('MM-dd-yyyy'))
I got this error while deploying to Virgo. The solution was to add this to my bundle imports:
org.springframework.transaction.config;version="[3.1,3.2)",
I noticed in the Spring jars under META-INF there is a spring.schemas and a spring.handlers section, and the class that they point to (in this case org.springframework.transaction.config.TxNamespaceHandler) must be imported.
The Date
object is used to work with dates and times.
Date objects are created with new Date()
var now = new Date();
now - Current date and time object.
function changeDate() {
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(GA_CONFIG);
var date = new Date();
sheet.getRange(5, 2).setValue(date);
}
To get the absolute path use this:
String path = HttpContext.Current.Server.MapPath("~/Data/data.html");
EDIT:
To get the Controller's Context remove .Current
from the above line. By using HttpContext
by itself it's easier to Test because it's based on the Controller's Context therefore more localized.
I realize now that I dislike how Server.MapPath
works (internally eventually calls HostingEnvironment.MapPath
) So I now recommend to always use HostingEnvironment.MapPath
because its static and not dependent on the context unless of course you want that...
In [4]: df = read_csv(StringIO(data),sep='\s+')
In [5]: df
Out[5]:
A B C
0 1 0.749065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtypes
Out[6]:
A int64
B float64
C object
dtype: object
When you apply your own function, there is not automatic exclusions of non-numeric columns. This is slower, though, than the application of .sum()
to the groupby
In [8]: df.groupby('A').apply(lambda x: x.sum())
Out[8]:
A B C
A
1 2 1.615586 Thisstring
2 4 0.421821 is!
3 3 0.463468 a
4 4 0.643961 random
sum
by default concatenates
In [9]: df.groupby('A')['C'].apply(lambda x: x.sum())
Out[9]:
A
1 Thisstring
2 is!
3 a
4 random
dtype: object
You can do pretty much what you want
In [11]: df.groupby('A')['C'].apply(lambda x: "{%s}" % ', '.join(x))
Out[11]:
A
1 {This, string}
2 {is, !}
3 {a}
4 {random}
dtype: object
Doing this on a whole frame, one group at a time. Key is to return a Series
def f(x):
return Series(dict(A = x['A'].sum(),
B = x['B'].sum(),
C = "{%s}" % ', '.join(x['C'])))
In [14]: df.groupby('A').apply(f)
Out[14]:
A B C
A
1 2 1.615586 {This, string}
2 4 0.421821 {is, !}
3 3 0.463468 {a}
4 4 0.643961 {random}
By using below, solved the problem
android:scrollbarThumbVertical="@null"
If you don't know the size of the browser you can simply center in CSS with the following code:
HTML code:
<div class="firstDiv">Some Text</div>
CSS code:
.firstDiv {
width: 500px;
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background-color: #F1F1F1;
}
This also helps in any unforeseen changes in the future.
That whole Open <file path> For Input As <some number>
thing is so 1990s. It's also slow and very error-prone.
In your VBA editor, Select References from the Tools menu and look for "Microsoft Scripting Runtime" (scrrun.dll) which should be available on pretty much any XP or Vista machine. It it's there, select it. Now you have access to a (to me at least) rather more robust solution:
With New Scripting.FileSystemObject
With .OpenTextFile(sFilename, ForReading)
If Not .AtEndOfStream Then .SkipLine
If Not .AtEndOfStream Then .SkipLine
Do Until .AtEndOfStream
DoSomethingImportantTo .ReadLine
Loop
End With
End With
If you deal with bandwidth problems, try to compress data at the client side first, then base64-it.
Nice example of such magic is at http://jszip.stuartk.co.uk/ and more discussion to this topic is at JavaScript implementation of Gzip
I've used an empty :after
element and decorated one border on it. You can even use CSS transforms to rotate it for a slanted line. Result: pure CSS, no extra HTML elements! Downside: doesn't wrap across multiple lines, although IMO you shouldn't use strikethrough on large blocks of text anyway.
s,_x000D_
strike {_x000D_
text-decoration: none;_x000D_
/*we're replacing the default line-through*/_x000D_
position: relative;_x000D_
display: inline-block;_x000D_
/* keeps it from wrapping across multiple lines */_x000D_
}_x000D_
_x000D_
s:after,_x000D_
strike:after {_x000D_
content: "";_x000D_
/* required property */_x000D_
position: absolute;_x000D_
bottom: 0;_x000D_
left: 0;_x000D_
border-top: 2px solid red;_x000D_
height: 45%;_x000D_
/* adjust as necessary, depending on line thickness */_x000D_
/* or use calc() if you don't need to support IE8: */_x000D_
height: calc(50% - 1px);_x000D_
/* 1px = half the line thickness */_x000D_
width: 100%;_x000D_
transform: rotateZ(-4deg);_x000D_
}
_x000D_
<p>Here comes some <strike>strike-through</strike> text!</p>
_x000D_
There are two ways to do this:
user._id
use user.id
and it will return a string for youuser._id.toString()
You should not rely on a hash code being equal to a specific value. Just that it will return consistent results within the same execution. The API docs say the following :
The general contract of hashCode is:
- Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
EDIT Since the javadoc for String.hashCode() specifies how a String's hash code is computed, any violation of this would violate the public API specification.
this will also work, if you like
xcopy C:\Test\Log "c:\Test\Backup-%date:~4,2%-%date:~7,2%-%date:~10,4%_%time:~0,2%%time:~3,2%" /s /i
del C:\Test\Log
Setting the modified http header to some date in 1995 usually does the trick.
Here's an example:
Expires: Wed, 15 Nov 1995 04:58:08 GMT Last-Modified: Wed, 15 Nov 1995 04:58:08 GMT Cache-Control: no-cache, must-revalidate
The overall dimensions of a range are in its Width
and Height
properties.
Dim r As Range
Set r = ActiveSheet.Range("A4:H12")
Debug.Print r.Width
Debug.Print r.Height
So is this the answer?
"If you need to calculate something but not show it, set the element to visibility:hidden
and position:absolute
, add it to the DOM tree, get the offsetHeight, and remove it. (That's what the prototype library does behind the lines last time I checked)."
I have the same problem on a number of elements. There is no jQuery or Prototype to be used on the site but I'm all in favor of borrowing the technique if it works. As an example of some things that failed to work, followed by what did, I have the following code:
// Layout Height Get
function fnElementHeightMaxGet(DoScroll, DoBase, elementPassed, elementHeightDefault)
{
var DoOffset = true;
if (!elementPassed) { return 0; }
if (!elementPassed.style) { return 0; }
var thisHeight = 0;
var heightBase = parseInt(elementPassed.style.height);
var heightOffset = parseInt(elementPassed.offsetHeight);
var heightScroll = parseInt(elementPassed.scrollHeight);
var heightClient = parseInt(elementPassed.clientHeight);
var heightNode = 0;
var heightRects = 0;
//
if (DoBase) {
if (heightBase > thisHeight) { thisHeight = heightBase; }
}
if (DoOffset) {
if (heightOffset > thisHeight) { thisHeight = heightOffset; }
}
if (DoScroll) {
if (heightScroll > thisHeight) { thisHeight = heightScroll; }
}
//
if (thisHeight == 0) { thisHeight = heightClient; }
//
if (thisHeight == 0) {
// Dom Add:
// all else failed so use the protype approach...
var elBodyTempContainer = document.getElementById('BodyTempContainer');
elBodyTempContainer.appendChild(elementPassed);
heightNode = elBodyTempContainer.childNodes[0].offsetHeight;
elBodyTempContainer.removeChild(elementPassed);
if (heightNode > thisHeight) { thisHeight = heightNode; }
//
// Bounding Rect:
// Or this approach...
var clientRects = elementPassed.getClientRects();
heightRects = clientRects.height;
if (heightRects > thisHeight) { thisHeight = heightRects; }
}
//
// Default height not appropriate here
// if (thisHeight == 0) { thisHeight = elementHeightDefault; }
if (thisHeight > 3000) {
// ERROR
thisHeight = 3000;
}
return thisHeight;
}
which basically tries anything and everything only to get a zero result. ClientHeight with no affect. With the problem elements I typically get NaN in the Base and zero in the Offset and Scroll heights. I then tried the Add DOM solution and clientRects to see if it works here.
29 Jun 2011, I did indeed update the code to try both adding to DOM and clientHeight with better results than I expected.
1) clientHeight was also 0.
2) Dom actually gave me a height which was great.
3) ClientRects returns a result almost identical to the DOM technique.
Because the elements added are fluid in nature, when they are added to an otherwise empty DOM Temp element they are rendered according to the width of that container. This get weird, because that is 30px shorter than it eventually ends up.
I added a few snapshots to illustrate how the height is calculated differently.
The height differences are obvious. I could certainly add absolute positioning and hidden but I am sure that will have no effect. I continued to be convinced this would not work!
(I digress further) The height comes out (renders) lower than the true rendered height. This could be addressed by setting the width of the DOM Temp element to match the existing parent and could be done fairly accurately in theory. I also do not know what would result from removing them and adding them back into their existing location. As they arrived through an innerHTML technique I will be looking using this different approach.
* HOWEVER * None of that was necessary. In fact it worked as advertised and returned the correct height!!!
When I was able to get the menus visible again amazingly DOM had returned the correct height per the fluid layout at the top of the page (279px). The above code also uses getClientRects which return 280px.
This is illustrated in the following snapshot (taken from Chrome once working.)
Now I have noooooo idea why that prototype trick works, but it seems to. Alternatively, getClientRects also works.
I suspect the cause of all this trouble with these particular elements was the use of innerHTML instead of appendChild, but that is pure speculation at this point.
Available in most UNIX system, ksh is standard-comliant, clearly designed, well-rounded. I think books,helps in ksh is enough and clear, especially the O'Reilly book. Bash is a mass. I keep it as root login shell for Linux at home only.
For interactive use, I prefer zsh on Linux/UNIX. I run scripts in zsh, but I'll test most of my scripts, functions in AIX ksh though.
I solved a very similar problem in this way:
If JavaScript is enabled (in most cases nowadays) then all the submit buttons are "degraded" to buttons at page load via JavaScript (jQuery). Click events on the "degraded" button typed buttons are also handled via JavaScript.
If JavaScript is not enabled then the form is served to the browser with multiple submit buttons. In this case hitting Enter on a textfield
within the form will submit the form with the first button instead of the intended default, but at least the form is still usable: you can submit with both the prev and next buttons.
Working example:
<html>_x000D_
<head>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>_x000D_
</head>_x000D_
_x000D_
<body>_x000D_
<form action="http://httpbin.org/post" method="post">_x000D_
If JavaScript is disabled, then you CAN submit the form_x000D_
with button1, button2 or button3._x000D_
_x000D_
If you press enter on a text field, then the form is_x000D_
submitted with the first submit button._x000D_
_x000D_
If JavaScript is enabled, then the submit typed buttons_x000D_
without the 'defaultSubmitButton' style are converted_x000D_
to button typed buttons._x000D_
_x000D_
If you press Enter on a text field, then the form is_x000D_
submitted with the only submit button_x000D_
(the one with class defaultSubmitButton)_x000D_
_x000D_
If you click on any other button in the form, then the_x000D_
form is submitted with that button's value._x000D_
_x000D_
<br />_x000D_
_x000D_
<input type="text" name="text1" ></input>_x000D_
<button type="submit" name="action" value="button1" >button 1</button>_x000D_
<br />_x000D_
_x000D_
<input type="text" name="text2" ></input>_x000D_
<button type="submit" name="action" value="button2" >button 2</button>_x000D_
<br />_x000D_
_x000D_
<input type="text" name="text3" ></input>_x000D_
<button class="defaultSubmitButton" type="submit" name="action" value="button3" >default button</button>_x000D_
</form>_x000D_
_x000D_
<script>_x000D_
$(document).ready(function(){_x000D_
_x000D_
/* Change submit typed buttons without the 'defaultSubmitButton'_x000D_
style to button typed buttons */_x000D_
$('form button[type=submit]').not('.defaultSubmitButton').each(function(){_x000D_
$(this).attr('type', 'button');_x000D_
});_x000D_
_x000D_
/* Clicking on button typed buttons results in:_x000D_
1. Setting the form's submit button's value to_x000D_
the clicked button's value,_x000D_
2. Clicking on the form's submit button */_x000D_
$('form button[type=button]').click(function( event ){_x000D_
var form = event.target.closest('form');_x000D_
var submit = $("button[type='submit']",form).first();_x000D_
submit.val(event.target.value);_x000D_
submit.click();_x000D_
});_x000D_
});_x000D_
</script>_x000D_
</body>_x000D_
</html>
_x000D_
If you want a new line character to be inserted into a plain text stream then you could use the OS independent global PHP_EOL
echo "foo";
echo PHP_EOL ;
echo "bar";
In HTML terms you would see a newline between foo and bar if you looked at the source code of the page.
ergo, it is useful if you are outputting say, a loop of values for a select box and you value having html source code which is "prettier" or easier to read for yourself later. e.g.
foreach( $dogs as $dog )
echo "<option>$dog</option>" . PHP_EOL ;
My 3 cents, though this is not a complete match to what the op wants. Here is the relevant reference.
namespace enums
{
template <typename T, T I, char ...Chars>
struct enums : std::integral_constant<T, I>
{
static constexpr char const chars[sizeof...(Chars)]{Chars...};
};
template <typename T, T X, typename S, std::size_t ...I>
constexpr auto make(std::index_sequence<I...>) noexcept
{
return enums<T, X, S().chars[I]...>();
}
#define ENUM(s, n) []() noexcept{\
struct S { char const (&chars)[sizeof(s)]{s}; };\
return enums::make<decltype(n), n, S>(\
std::make_index_sequence<sizeof(s)>());}()
#define ENUM_T(s, n)\
static constexpr auto s ## _tmp{ENUM(#s, n)};\
using s ## _enum_t = decltype(s ## _tmp)
template <typename T, typename ...A, std::size_t N>
inline auto map(char const (&s)[N]) noexcept
{
constexpr auto invalid(~T{});
auto r{invalid};
return
(
(
invalid == r ?
r = std::strncmp(A::chars, s, N) ? invalid : A{} :
r
),
...
);
}
}
int main()
{
ENUM_T(echo, 0);
ENUM_T(cat, 1);
ENUM_T(ls, 2);
std::cout << echo_enum_t{} << " " << echo_enum_t::chars << std::endl;
std::cout << enums::map<int, echo_enum_t, cat_enum_t, ls_enum_t>("ls")) << std::endl;
return 0;
}
So you generate a type, that you can convert to an integer and/or a string.
This could be complicated way of doing
String newString = new String(oldString);
This shortens the String is the underlying char[] used is much longer.
However more specifically it will be checking that every character can be UTF-8 encoded.
There are some "characters" you can have in a String which cannot be encoded and these would be turned into ?
Any character between \uD800 and \uDFFF cannot be encoded and will be turned into '?'
String oldString = "\uD800";
String newString = new String(oldString.getBytes("UTF-8"), "UTF-8");
System.out.println(newString.equals(oldString));
prints
false
I would use SharedSizeGroup
<Grid>
<Grid.ColumnDefinition>
<ColumnDefinition SharedSizeGroup="col1"></ColumnDefinition>
<ColumnDefinition SharedSizeGroup="col2"></ColumnDefinition>
</Grid.ColumnDefinition>
<TextBox Background="Azure" Text="Hello" Grid.Column="1" MaxWidth="200" />
</Grid>
If you are building your project with gradle, you just need to add one line to the dependencies in the build.gradle:
buildscript {
...
}
...
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
}
and then add the folder to your root project or module:
Then you drop your jars in there and you are good to go :-)
In the opening tag of your form, set an action attribute like so:
<form id="contactForm" action="#">
The accepted answer is good, however, I would have needed various library configurations within my multi-project Gradle build to use the same 3rd-party Java library.
Adding '$rootProject.projectDir' to the 'dir' path element within my 'allprojects' closure meant each sub-project referenced the same 'libs' directory, and not a version local to that sub-project:
//gradle.build snippet
allprojects {
...
repositories {
//All sub-projects will now refer to the same 'libs' directory
flatDir {
dirs "$rootProject.projectDir/libs"
}
mavenCentral()
}
...
}
EDIT by Quizzie: changed "${rootProject.projectDir}" to "$rootProject.projectDir" (works in the newest Gradle version).
In my case it was a view (highly nested, view in view) insertion causing the error in mysql-5.6:
CREATE TABLE tablename AS
SELECT * FROM highly_nested_viewname
;
The workaround we ended up doing was simulating a materialized view (which is really a table) and periodically insert/update it using stored procedures.
This is working fine for me :
public class MethodInvokerClass {
public static void main(String[] args) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, ClassNotFoundException, InvocationTargetException, InstantiationException {
Class c = Class.forName(MethodInvokerClass.class.getName());
Object o = c.newInstance();
Class[] paramTypes = new Class[1];
paramTypes[0]=String.class;
String methodName = "countWord";
Method m = c.getDeclaredMethod(methodName, paramTypes);
m.invoke(o, "testparam");
}
public void countWord(String input){
System.out.println("My input "+input);
}
}
Output:
My input testparam
I am able to invoke the method by passing its name to another method (like main).
Do you want to add JSON serialization/deserialization functionality, right? Then look at this:
You want to achieve this:
toJson() is a normal method.
fromJson() is a static method.
Implementation:
var Book = function (title, author, isbn, price, stock){
this.title = title;
this.author = author;
this.isbn = isbn;
this.price = price;
this.stock = stock;
this.toJson = function (){
return ("{" +
"\"title\":\"" + this.title + "\"," +
"\"author\":\"" + this.author + "\"," +
"\"isbn\":\"" + this.isbn + "\"," +
"\"price\":" + this.price + "," +
"\"stock\":" + this.stock +
"}");
};
};
Book.fromJson = function (json){
var obj = JSON.parse (json);
return new Book (obj.title, obj.author, obj.isbn, obj.price, obj.stock);
};
Usage:
var book = new Book ("t", "a", "i", 10, 10);
var json = book.toJson ();
alert (json); //prints: {"title":"t","author":"a","isbn":"i","price":10,"stock":10}
var book = Book.fromJson (json);
alert (book.title); //prints: t
Note: If you want you can change all property definitions like this.title
, this.author
, etc by var title
, var author
, etc. and add getters to them to accomplish the UML definition.
You can use String#matches method like this:
System.out.printf("Matches - [%s]%n", string.matches("^.*?(item1|item2|item3).*$"));
Connect to DB using base user:
mysql -u base_user -pbase_user_pass
And execute CREATE DATABASE, CREATE USER and GRANT PRIVILEGES Statements.
Here's handy web wizard to help you with statements www.bugaco.com/helpers/create_database.html
I am all for Eran Harel's solution and in cases where it isn't possible, Tomasz Nurkiewicz's suggestion for spying is excellent. However, it's worth noting that there are situations where neither would apply. E.g. if the login
method was a bit "beefier":
public class TestedClass {
public LoginContext login(String user, String password) {
LoginContext lc = new LoginContext("login", callbackHandler);
lc.doThis();
lc.doThat();
return lc;
}
}
... and this was old code that could not be refactored to extract the initialization of a new LoginContext
to its own method and apply one of the aforementioned solutions.
For completeness' sake, it's worth mentioning a third technique - using PowerMock to inject the mock object when the new
operator is called. PowerMock isn't a silver bullet, though. It works by applying byte-code manipulation on the classes it mocks, which could be dodgy practice if the tested classes employ byte code manipulation or reflection and at least from my personal experience, has been known to introduce a performance hit to the test. Then again, if there are no other options, the only option must be the good option:
@RunWith(PowerMockRunner.class)
@PrepareForTest(TestedClass.class)
public class TestedClassTest {
@Test
public void testLogin() {
LoginContext lcMock = mock(LoginContext.class);
whenNew(LoginContext.class).withArguments(anyString(), anyString()).thenReturn(lcMock);
TestedClass tc = new TestedClass();
tc.login ("something", "something else");
// test the login's logic
}
}
Found this as I was searching for which way is fastest to pull the second element of a 2-tuple list. Not what I wanted but ran same test as shown with a 3rd method plus test the zip method
setup = 'elements = [(1,1) for _ in range(100000)];from operator import itemgetter'
method1 = '[x[1] for x in elements]'
method2 = 'map(itemgetter(1), elements)'
method3 = 'dict(elements).values()'
method4 = 'zip(*elements)[1]'
import timeit
t = timeit.Timer(method1, setup)
print('Method 1: ' + str(t.timeit(100)))
t = timeit.Timer(method2, setup)
print('Method 2: ' + str(t.timeit(100)))
t = timeit.Timer(method3, setup)
print('Method 3: ' + str(t.timeit(100)))
t = timeit.Timer(method4, setup)
print('Method 4: ' + str(t.timeit(100)))
Method 1: 0.618785858154
Method 2: 0.711684942245
Method 3: 0.298138141632
Method 4: 1.32586884499
So over twice as fast if you have a 2 tuple pair to just convert to a dict and take the values.
Convert the Special characters to apostrophe,
Data <- gsub("[^0-9A-Za-z///' ]","'" , Data ,ignore.case = TRUE)
Below code it to remove extra ''' apostrophe
Data <- gsub("''","" , Data ,ignore.case = TRUE)
Use gsub(..)
function for replacing the special character with apostrophe
android:textColorHint="#FFFFFF" sometime works and sometime doesnt. For me below solution works perfectly
Try The Below Code It Works In your XML file and TextLabel theme is defined in style.xml
<android.support.design.widget.TextInputLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:theme="@style/MyTextLabel">
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="Floating Label"
android:id="@+id/edtText"/>
</android.support.design.widget.TextInputLayout>
In Styles Folder TextLabel Code
<style name="MyTextLabel" parent="TextAppearance.AppCompat">
<!-- Hint color and label color in FALSE state -->
<item name="android:textColorHint">@color/Color Name</item>
<!--The size of the text appear on label in false state -->
<item name="android:textSize">20sp</item>
<!-- Label color in TRUE state and bar color FALSE and TRUE State -->
<item name="colorAccent">@color/Color Name</item>
<item name="colorControlNormal">@color/Color Name</item>
<item name="colorControlActivated">@color/Color Name</item>
</style>
If you just want to change the color of label in false state then colorAccent , colorControlNormal and colorControlActivated are not required
I've been experimenting with the various methods .NET provide for URL encoding. Perhaps the following table will be useful (as output from a test app I wrote):
Unencoded UrlEncoded UrlEncodedUnicode UrlPathEncoded EscapedDataString EscapedUriString HtmlEncoded HtmlAttributeEncoded HexEscaped
A A A A A A A A %41
B B B B B B B B %42
a a a a a a a a %61
b b b b b b b b %62
0 0 0 0 0 0 0 0 %30
1 1 1 1 1 1 1 1 %31
[space] + + %20 %20 %20 [space] [space] %20
! ! ! ! ! ! ! ! %21
" %22 %22 " %22 %22 " " %22
# %23 %23 # %23 # # # %23
$ %24 %24 $ %24 $ $ $ %24
% %25 %25 % %25 %25 % % %25
& %26 %26 & %26 & & & %26
' %27 %27 ' ' ' ' ' %27
( ( ( ( ( ( ( ( %28
) ) ) ) ) ) ) ) %29
* * * * %2A * * * %2A
+ %2b %2b + %2B + + + %2B
, %2c %2c , %2C , , , %2C
- - - - - - - - %2D
. . . . . . . . %2E
/ %2f %2f / %2F / / / %2F
: %3a %3a : %3A : : : %3A
; %3b %3b ; %3B ; ; ; %3B
< %3c %3c < %3C %3C < < %3C
= %3d %3d = %3D = = = %3D
> %3e %3e > %3E %3E > > %3E
? %3f %3f ? %3F ? ? ? %3F
@ %40 %40 @ %40 @ @ @ %40
[ %5b %5b [ %5B %5B [ [ %5B
\ %5c %5c \ %5C %5C \ \ %5C
] %5d %5d ] %5D %5D ] ] %5D
^ %5e %5e ^ %5E %5E ^ ^ %5E
_ _ _ _ _ _ _ _ %5F
` %60 %60 ` %60 %60 ` ` %60
{ %7b %7b { %7B %7B { { %7B
| %7c %7c | %7C %7C | | %7C
} %7d %7d } %7D %7D } } %7D
~ %7e %7e ~ ~ ~ ~ ~ %7E
A %c4%80 %u0100 %c4%80 %C4%80 %C4%80 A A [OoR]
a %c4%81 %u0101 %c4%81 %C4%81 %C4%81 a a [OoR]
E %c4%92 %u0112 %c4%92 %C4%92 %C4%92 E E [OoR]
e %c4%93 %u0113 %c4%93 %C4%93 %C4%93 e e [OoR]
I %c4%aa %u012a %c4%aa %C4%AA %C4%AA I I [OoR]
i %c4%ab %u012b %c4%ab %C4%AB %C4%AB i i [OoR]
O %c5%8c %u014c %c5%8c %C5%8C %C5%8C O O [OoR]
o %c5%8d %u014d %c5%8d %C5%8D %C5%8D o o [OoR]
U %c5%aa %u016a %c5%aa %C5%AA %C5%AA U U [OoR]
u %c5%ab %u016b %c5%ab %C5%AB %C5%AB u u [OoR]
The columns represent encodings as follows:
UrlEncoded: HttpUtility.UrlEncode
UrlEncodedUnicode: HttpUtility.UrlEncodeUnicode
UrlPathEncoded: HttpUtility.UrlPathEncode
EscapedDataString: Uri.EscapeDataString
EscapedUriString: Uri.EscapeUriString
HtmlEncoded: HttpUtility.HtmlEncode
HtmlAttributeEncoded: HttpUtility.HtmlAttributeEncode
HexEscaped: Uri.HexEscape
NOTES:
HexEscape
can only handle the first 255 characters. Therefore it throws an ArgumentOutOfRange
exception for the Latin A-Extended characters (eg A).
This table was generated in .NET 4.0 (see Levi Botelho's comment below that says the encoding in .NET 4.5 is slightly different).
EDIT:
I've added a second table with the encodings for .NET 4.5. See this answer: https://stackoverflow.com/a/21771206/216440
EDIT 2:
Since people seem to appreciate these tables, I thought you might like the source code that generates the table, so you can play around yourselves. It's a simple C# console application, which can target either .NET 4.0 or 4.5:
using System;
using System.Collections.Generic;
using System.Text;
// Need to add a Reference to the System.Web assembly.
using System.Web;
namespace UriEncodingDEMO2
{
class Program
{
static void Main(string[] args)
{
EncodeStrings();
Console.WriteLine();
Console.WriteLine("Press any key to continue...");
Console.Read();
}
public static void EncodeStrings()
{
string stringToEncode = "ABCD" + "abcd"
+ "0123" + " !\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~" + "AaEeIiOoUu";
// Need to set the console encoding to display non-ASCII characters correctly (eg the
// Latin A-Extended characters such as AaEe...).
Console.OutputEncoding = Encoding.UTF8;
// Will also need to set the console font (in the console Properties dialog) to a font
// that displays the extended character set correctly.
// The following fonts all display the extended characters correctly:
// Consolas
// DejaVu Sana Mono
// Lucida Console
// Also, in the console Properties, set the Screen Buffer Size and the Window Size
// Width properties to at least 140 characters, to display the full width of the
// table that is generated.
Dictionary<string, Func<string, string>> columnDetails =
new Dictionary<string, Func<string, string>>();
columnDetails.Add("Unencoded", (unencodedString => unencodedString));
columnDetails.Add("UrlEncoded",
(unencodedString => HttpUtility.UrlEncode(unencodedString)));
columnDetails.Add("UrlEncodedUnicode",
(unencodedString => HttpUtility.UrlEncodeUnicode(unencodedString)));
columnDetails.Add("UrlPathEncoded",
(unencodedString => HttpUtility.UrlPathEncode(unencodedString)));
columnDetails.Add("EscapedDataString",
(unencodedString => Uri.EscapeDataString(unencodedString)));
columnDetails.Add("EscapedUriString",
(unencodedString => Uri.EscapeUriString(unencodedString)));
columnDetails.Add("HtmlEncoded",
(unencodedString => HttpUtility.HtmlEncode(unencodedString)));
columnDetails.Add("HtmlAttributeEncoded",
(unencodedString => HttpUtility.HtmlAttributeEncode(unencodedString)));
columnDetails.Add("HexEscaped",
(unencodedString
=>
{
// Uri.HexEscape can only handle the first 255 characters so for the
// Latin A-Extended characters, such as A, it will throw an
// ArgumentOutOfRange exception.
try
{
return Uri.HexEscape(unencodedString.ToCharArray()[0]);
}
catch
{
return "[OoR]";
}
}));
char[] charactersToEncode = stringToEncode.ToCharArray();
string[] stringCharactersToEncode = Array.ConvertAll<char, string>(charactersToEncode,
(character => character.ToString()));
DisplayCharacterTable<string>(stringCharactersToEncode, columnDetails);
}
private static void DisplayCharacterTable<TUnencoded>(TUnencoded[] unencodedArray,
Dictionary<string, Func<TUnencoded, string>> mappings)
{
foreach (string key in mappings.Keys)
{
Console.Write(key.Replace(" ", "[space]") + " ");
}
Console.WriteLine();
foreach (TUnencoded unencodedObject in unencodedArray)
{
string stringCharToEncode = unencodedObject.ToString();
foreach (string columnHeader in mappings.Keys)
{
int columnWidth = columnHeader.Length + 1;
Func<TUnencoded, string> encoder = mappings[columnHeader];
string encodedString = encoder(unencodedObject);
// ASSUMPTION: Column header will always be wider than encoded string.
Console.Write(encodedString.Replace(" ", "[space]").PadRight(columnWidth));
}
Console.WriteLine();
}
}
}
}
Using GNU sed
:
sed "/cdef/aline1\nline2\nline3\nline4" input.txt
If you started with:
abcd
accd
cdef
line
web
this would produce:
abcd
accd
cdef
line1
line2
line3
line4
line
web
If you want to save the changes to the file in-place, say:
sed -i "/cdef/aline1\nline2\nline3\nline4" input.txt
With brew this is a one-liner:
(assuming that you have tapped homebrew/versions, which can be done by running brew tap homebrew/versions
)
brew install ruby193
Worked out of the box for me on OS X 10.8.4. Or if you want 2.0, you just brew install ruby
More generally, brew search ruby
shows you the different repos available, and if you want to get really specific you can use brew versions ruby
and checkout a specific version instead.
Putting these lines at the starting of the code will tell your operating systems to look up the binary program needed for the execution of the python script i.e it is the python interpreter.
So it depends on your operating system where it keeps the python interpreter. As I have Ubuntu as operating system it keeps the python interpreter in /usr/bin/python
so I have to write this line at the starting of my python script;
#!/usr/bin/python
After completing and saving your code
Start your command terminal
Make sure the script lies in your present working directory
Type chmod +x script_name.py
Now you can start the script by clicking the script. An alert box will appear; press "Run" or "Run in Terminal" in the alert box; or, at the terminal prompt, type ./script_name.py
Since all the answers here are correct but use legacy java or 3rd party libs like joda or similar, I will just drop another way using new java.time classes in Java 8 and later. See Oracle Tutorial.
Use LocalDate
and ChronoUnit
:
LocalDate d1 = LocalDate.of(2017, 5, 1);
LocalDate d2 = LocalDate.of(2017, 5, 18);
long days = ChronoUnit.DAYS.between(d1, d2);
System.out.println( days );
function Numbers(e)
{
if($.browser.msie)
{
if(e.keyCode > 47 && e.keyCode < 58)
return true;
else
return false;
}
else
{
if((e.charCode > 47 && e.charCode < 58) || (e.charCode == 0))
return true;
else
return false;
}
}
I hope this will work on all browsers.
It has to be a constant - the value has to be computable at the time that the procedure is created, and that one computation has to provide the value that will always be used.
Look at the definition of sys.all_parameters
:
default_value
sql_variant
Ifhas_default_value
is 1, the value of this column is the value of the default for the parameter; otherwise,NULL
.
That is, whatever the default for a parameter is, it has to fit in that column.
As Alex K pointed out in the comments, you can just do:
CREATE PROCEDURE [dbo].[problemParam]
@StartDate INT = NULL,
@EndDate INT = NULL
AS
BEGIN
SET @StartDate = COALESCE(@StartDate,CONVERT(INT,(CONVERT(CHAR(8),GETDATE()-130,112))))
provided that NULL
isn't intended to be a valid value for @StartDate
.
As to the blog post you linked to in the comments - that's talking about a very specific context - that, the result of evaluating GETDATE()
within the context of a single query is often considered to be constant. I don't know of many people (unlike the blog author) who would consider a separate expression inside a UDF to be part of the same query as the query that calls the UDF.
You can use Explicit wait or Fluent Wait
Example of Explicit Wait -
WebDriverWait wait = new WebDriverWait(WebDriverRefrence,20);
WebElement aboutMe;
aboutMe= wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("about_me")));
Example of Fluent Wait -
Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
.withTimeout(20, TimeUnit.SECONDS)
.pollingEvery(5, TimeUnit.SECONDS)
.ignoring(NoSuchElementException.class);
WebElement aboutMe= wait.until(new Function<WebDriver, WebElement>() {
public WebElement apply(WebDriver driver) {
return driver.findElement(By.id("about_me"));
}
});
Check this TUTORIAL for more details.
Dim SaveVar As Object
Sub Main()
Console.WriteLine("Enter Text")
Console.WriteLine("")
SaveVar = Console.ReadLine
My.Computer.FileSystem.WriteAllText("N:\A-Level Computing\2017!\PPE\SaveFile\SaveData.txt", "Text: " & SaveVar & ", ", True)
Console.WriteLine("")
Console.WriteLine("File Saved")
Console.WriteLine("")
Console.WriteLine(My.Computer.FileSystem.ReadAllText("N:\A-Level Computing\2017!\PPE\SaveFile\SaveData.txt"))
Console.ReadLine()
End Sub()
The Heap is divided into young and old generations as follows :
Young Generation : It is place where lived for short period and divided into two spaces:
Old Generation : This pool basically contains tenured and virtual (reserved) space and will be holding those objects which survived after garbage collection from Young Generation.
Permanent Generation : This memory pool as name also says contain permanent class metadata and descriptors information so PermGen space always reserved for classes and those that is tied to the classes for example static members.
Java8 Update: PermGen is replaced with Metaspace which is very similar.
Main difference is that Metaspace re-sizes dynamically i.e., It can expand at runtime.
Java Metaspace space: unbounded (default)
Code Cache (Virtual or reserved) : If you are using HotSpot Java VM this includes code cache area that containing memory which will be used for compilation and storage of native code.
Here is a method using a lookup table of thresholds and associated colours to map the colours to the variable of interest.
# make a grid 'Grd' of points and number points for side of square 'GrdD'
Grd <- expand.grid(seq(0.5,400.5,10),seq(0.5,400.5,10))
GrdD <- length(unique(Grd$Var1))
# Add z-values to the grid points
Grd$z <- rnorm(length(Grd$Var1), mean = 10, sd =2)
# Make a vector of thresholds 'Brks' to colour code z
Brks <- c(seq(0,18,3),Inf)
# Make a vector of labels 'Lbls' for the colour threhsolds
Lbls <- Lbls <- c('0-3','3-6','6-9','9-12','12-15','15-18','>18')
# Make a vector of colours 'Clrs' for to match each range
Clrs <- c("grey50","dodgerblue","forestgreen","orange","red","purple","magenta")
# Make up lookup dataframe 'LkUp' of the lables and colours
LkUp <- data.frame(cbind(Lbls,Clrs),stringsAsFactors = FALSE)
# Add a new variable 'Lbls' the grid dataframe mapping the labels based on z-value
Grd$Lbls <- as.character(cut(Grd$z, breaks = Brks, labels = Lbls))
# Add a new variable 'Clrs' to the grid dataframe based on the Lbls field in the grid and lookup table
Grd <- merge(Grd,LkUp, by.x = 'Lbls')
# Plot the grid using the 'Clrs' field for the colour of each point
plot(Grd$Var1,
Grd$Var2,
xlim = c(0,400),
ylim = c(0,400),
cex = 1.0,
col = Grd$Clrs,
pch = 20,
xlab = 'mX',
ylab = 'mY',
main = 'My Grid',
axes = FALSE,
labels = FALSE,
las = 1
)
axis(1,seq(0,400,100))
axis(2,seq(0,400,100),las = 1)
box(col = 'black')
legend("topleft", legend = Lbls, fill = Clrs, title = 'Z')
Spring was dependency injection in the begining, then add king of wrappers for almost everything (wrapper over JPA implementations etc).
Long story ... most parts of Spring preffer XML solutions (XML scripting engine ... brrrr), so for DI I use Guice
Good library, but with growing depnedenciec, for example Spring JDBC (maybe one Java jdbc solution with real names parameters) take from maven 4-5 next.
Using Spring MVC (part of "big spring") for web development ... it is "request based" framework, there is holy war "request vs component" ... up to You
I did two things inspired by @OscarJovanny comment, with some hacks.
Step 1:
Step 2:
<style>
ul {
list-style-type: none;
margin-left: 10px;
}
ul li {
margin-bottom: 12px;
margin-left: -10px;
display: flex;
align-items: center;
}
ul li::before {
color: transparent;
font-size: 1px;
content: " ";
margin-left: -1.3em;
margin-right: 15px;
padding: 10px;
background-color: orange;
-webkit-mask-image: url("./assets/img/check-circle-solid.svg");
-webkit-mask-size: cover;
}
</style>
Results
as you write the it with double-quotes, you don't need to escape spaces with \
export PATH=$PATH:"/cygdrive/C/Program Files/Java/jdk1.6.0_23/bin/"
of course this also works:
export PATH=$PATH:/cygdrive/C/Program\ Files/Java/jdk1.6.0_23/bin/
You don't need the CELL() part of your formulas:
=INDIRECT(ADDRESS(B1,B2))
or
=OFFSET($A$1, B1-1,B2-1)
will both work. Note that both INDIRECT
and OFFSET
are volatile functions. Volatile functions can slow down calculation because they are calculated at every single recalculation.
The solution
angular.element(document.getElementById('ID')).scope().get()
stopped working for me in angular 1.5.2. Sombody mention in a comment that this doesn't work in 1.4.9 also.
I fixed it by storing the scope in a global variable:
var scopeHolder;
angular.module('fooApp').controller('appCtrl', function ($scope) {
$scope = function bar(){
console.log("foo");
};
scopeHolder = $scope;
})
call from custom code:
scopeHolder.bar()
if you wants to restrict the scope to only this method. To minimize the exposure of whole scope. use following technique.
var scopeHolder;
angular.module('fooApp').controller('appCtrl', function ($scope) {
$scope.bar = function(){
console.log("foo");
};
scopeHolder = $scope.bar;
})
call from custom code:
scopeHolder()
For my project, the problem turned out to be a circular reference created by the require() calls:
y.js:
var x = require("./x.js");
var y = function() { console.log("result is " + x(); }
module.exports = y;
x.js:
var y = require("./y.js");
var my_y = new y(); // <- TypeError: y is not a constructor
var x = function() { console.log("result is " + my_y; }
module.exports = x;
The reason is that when it is attempting to initialize y, it creates a temporary "y" object (not class, object!) in the dependency system that is somehow not yet a constructor. Then, when x.js is finished being defined, it can continue making y a constructor. Only, x.js has an error in it where it tries to use the non-constructor y.
Here is a little more fun. I've found that very often NumPy does exactly what I wish it would do - sometimes it's faster for me to just try things than it is to read the docs. Actually a mixture of both is best.
I think your answer is fine (and it's OK to accept it if you like). This is just "extra".
import numpy as np
a = np.arange(4,10).reshape(2,3)
wh = np.where(a>7)
gt = a>7
x = np.where(gt)
print "wh: ", wh
print "gt: ", gt
print "x: ", x
gives:
wh: (array([1, 1]), array([1, 2]))
gt: [[False False False]
[False True True]]
x: (array([1, 1]), array([1, 2]))
... but:
print "a[wh]: ", a[wh]
print "a[gt] ", a[gt]
print "a[x]: ", a[x]
gives:
a[wh]: [8 9]
a[gt] [8 9]
a[x]: [8 9]
Try to create a new database and import every table, query etc into this new database. With this import Access recreates all the objects from scratch. If there is some sort of corruption in an object, it should be solved.
If you're Lucky only the corrupted item(s) will be lost, if any.
You should check the $GOPATH
directory. If there is an empty directory of the package name, go get
doesn't download the package from the repository.
For example, If I want to get the github.com/googollee/go-socket.io
package from it's github repository, and there is already an empty directory github.com/googollee/go-socket.io
in the $GOPATH
, go get
doesn't download the package and then complains that there is no buildable Go source file in the directory. Delete any empty directory first of all.
In Presto you could use use
SELECT array_max(ARRAY[o.NegotiatedPrice, o.SuggestedPrice])
Speaking as a mere mortal, I would stick with $str[0]
. As far as I'm concerned, it's quicker to grasp the meaning of $str[0]
at a glance than substr($str, 0, 1)
. This probably boils down to a matter of preference.
As far as performance goes, well, profile profile profile. :) Or you could peer into the PHP source code...
I just wanted to leave the following which enhances the accepted answer above.
In addition to the accepted answer, you can make your own life a bit easier by specifying an alias
path in Webpack, so you don't have to worry where the image is located relative to the file you're currently in. Please see example below:
Webpack file:
module.exports = {
resolve: {
modules: ['node_modules'],
alias: {
public: path.join(__dirname, './public')
}
},
}
Use:
<img src={require("public/img/resto.ong")} />
This css works for me:
.dataTables_paginate {
float: none !important;
text-align: center !important;
}
dataset <- matrix(sample(c(NA, 1:5), 25, replace = TRUE), 5);
data <- as.data.frame(dataset)
[,1] [,2] [,3] [,4] [,5] [1,] 2 3 5 5 4 [2,] 2 4 3 2 4 [3,] 2 NA NA NA 2 [4,] 2 3 NA 5 5 [5,] 2 3 2 2 3
data[is.na(data)] <- 0
You can use deparse
and substitute
to get the name of a function argument:
myfunc <- function(v1) {
deparse(substitute(v1))
}
myfunc(foo)
[1] "foo"
You could just use underscore library.
Install it:
npm install underscore --save
npm install @types/underscore --save-dev
Import it
import _ = require('underscore');
Use it
var x = _.filter(
[{ "id": 1 }, { "id": -2 }, { "id": 3 }],
myObj => myObj.id < 0)
);
You can see some reports in SSMS:
Right-click the instance name / reports / standard / top sessions
You can see top CPU consuming sessions. This may shed some light on what SQL processes are using resources. There are a few other CPU related reports if you look around. I was going to point to some more DMVs but if you've looked into that already I'll skip it.
You can use sp_BlitzCache to find the top CPU consuming queries. You can also sort by IO and other things as well. This is using DMV info which accumulates between restarts.
This article looks promising.
Some stackoverflow goodness from Mr. Ozar.
edit: A little more advice... A query running for 'only' 5 seconds can be a problem. It could be using all your cores and really running 8 cores times 5 seconds - 40 seconds of 'virtual' time. I like to use some DMVs to see how many executions have happened for that code to see what that 5 seconds adds up to.
Newtonsoft.Json.JsonConvert.SerializeObject(Convert.ToDateTime(dr[col.ColumnName])).Replace('"', ' ').Trim();
Two solutions: One simple and one more advanced.
There are two solutions available to you depending on the severity of your issue
Replace with your own values, as follows:
XXXMYINDEXXXX
with the name of an index.XXXMYTABLEXXX
with the name of a table.XXXDATABASENAMEXXX
with the name of a database.Rebuild all indexes for a table in offline mode
ALTER INDEX ALL ON XXXMYTABLEXXX REBUILD
Rebuild one specified index for a table in offline mode
ALTER INDEX XXXMYINDEXXXX ON XXXMYTABLEXXX REBUILD
Fragmentation is an issue in tables that regularly have entries both added and removed.
Check fragmentation percentage
SELECT
ips.[index_id] ,
idx.[name] ,
ips.[avg_fragmentation_in_percent]
FROM
sys.dm_db_index_physical_stats(DB_ID(N'XXXMYDATABASEXXX'), OBJECT_ID(N'XXXMYTABLEXXX'), NULL, NULL, NULL) AS [ips]
INNER JOIN sys.indexes AS [idx] ON [ips].[object_id] = [idx].[object_id] AND [ips].[index_id] = [idx].[index_id]
If the fragmentation value is greater than 5%, but less than 30% then it is worth reorganising indexes.
Reorganise all indexes for a table
ALTER INDEX ALL ON XXXMYTABLEXXX REORGANIZE
Reorganise one specified index for a table
ALTER INDEX XXXMYINDEXXXX ON XXXMYTABLEXXX REORGANIZE
If the fragmentation value is 30% or greater then it is worth rebuilding then indexes in online mode.
Rebuild all indexes in online mode for a table
ALTER INDEX ALL ON XXXMYTABLEXXX REBUILD WITH (ONLINE = ON)
Rebuild one specified index in online mode for a table
ALTER INDEX XXXMYINDEXXXX ON XXXMYTABLEXXX REBUILD WITH (ONLINE = ON)
there is another technique
use
background-size:cover
That is it full set of css is
body {
background: url('images/body-bg.jpg') no-repeat center center fixed;
-moz-background-size: cover;
-webkit-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Latest browsers support the default property.
Internet Explorer is the only browser which really suffers from this in today's world. (Versions 5, 6, and 7 were dog slow. 8 does not show the same degradation.) What's more, IE gets slower and slower the longer your string is.
If you have long strings to concatenate then definitely use an array.join technique. (Or some StringBuffer wrapper around this, for readability.) But if your strings are short don't bother.
I had NestedScrollView inside ConstraintLayout, and this NestedScrollView has one ConstraintLayout.
If you're facing issue with NestedScrollView
,
add android:fillViewport="true"
to NestedScrollView, worked.
So, let's say you have this table:
CREATE TABLE YourTable(Col1 VARCHAR(10))
And you want to change Col1
to VARCHAR(20)
. What you need to do is this:
ALTER TABLE YourTable
ALTER COLUMN Col1 VARCHAR(20)
That'll work without problems since the length of the column got bigger. If you wanted to change it to VARCHAR(5)
, then you'll first gonna need to make sure that there are not values with more chars on your column, otherwise that ALTER TABLE
will fail.
An old question, but I'd like to offer my solution anyway. It's based on acceptance that model objects too require some additional functionality while it's awkward to place it within the models.py. Heavy business logic may be written separately depending on personal taste, but I at least like the model to do everything related to itself. This solution also supports those who like to have all the logic placed within models themselves.
As such, I devised a hack that allows me to separate logic from model definitions and still get all the hinting from my IDE.
The advantages should be obvious, but this lists a few that I have observed:
I have been using this with Python 3.4 and greater and Django 1.8 and greater.
app/models.py
....
from app.logic.user import UserLogic
class User(models.Model, UserLogic):
field1 = models.AnyField(....)
... field definitions ...
app/logic/user.py
if False:
# This allows the IDE to know about the User model and its member fields
from main.models import User
class UserLogic(object):
def logic_function(self: 'User'):
... code with hinting working normally ...
The only thing I can't figure out is how to make my IDE (PyCharm in this case) recognise that UserLogic is actually User model. But since this is obviously a hack, I'm quite happy to accept the little nuisance of always specifying type for self
parameter.
I liked Arun's answer better but there is a tiny problem and I could not comment or edit the answer. sparkContext does not have createDeataFrame, sqlContext does (as Thiago mentioned). So:
from pyspark.sql import SQLContext
# assuming the spark environemnt is set and sc is spark.sparkContext
sqlContext = SQLContext(sc)
schemaPeople = sqlContext.createDataFrame(RDDName)
schemaPeople.createOrReplaceTempView("RDDName")
it worked. Just modified it
global $woocommerce, $post;
$order = new WC_Order($post->ID);
//to escape # from order id
$order_id = trim(str_replace('#', '', $order->get_order_number()));
As you know the newer versions of Spring don't use the PropertyPlaceholderConfigurer and now use another nightmarish construct called PropertySourcesPlaceholderConfigurer. If you're trying to get resolved properties from code, and wish the Spring team gave us a way to do this a long time ago, then vote this post up! ... Because this is how you do it the new way:
Subclass PropertySourcesPlaceholderConfigurer:
public class SpringPropertyExposer extends PropertySourcesPlaceholderConfigurer {
private ConfigurableListableBeanFactory factory;
/**
* Save off the bean factory so we can use it later to resolve properties
*/
@Override
protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess,
final ConfigurablePropertyResolver propertyResolver) throws BeansException {
super.processProperties(beanFactoryToProcess, propertyResolver);
if (beanFactoryToProcess.hasEmbeddedValueResolver()) {
logger.debug("Value resolver exists.");
factory = beanFactoryToProcess;
}
else {
logger.error("No existing embedded value resolver.");
}
}
public String getProperty(String name) {
Object propertyValue = factory.resolveEmbeddedValue(this.placeholderPrefix + name + this.placeholderSuffix);
return propertyValue.toString();
}
}
To use it, make sure to use your subclass in your @Configuration and save off a reference to it for later use.
@Configuration
@ComponentScan
public class PropertiesConfig {
public static SpringPropertyExposer commonEnvConfig;
@Bean(name="commonConfig")
public static PropertySourcesPlaceholderConfigurer commonConfig() throws IOException {
commonEnvConfig = new SpringPropertyExposer(); //This is a subclass of the return type.
PropertiesFactoryBean commonConfig = new PropertiesFactoryBean();
commonConfig.setLocation(new ClassPathResource("META-INF/spring/config.properties"));
try {
commonConfig.afterPropertiesSet();
}
catch (IOException e) {
e.printStackTrace();
throw e;
}
commonEnvConfig.setProperties(commonConfig.getObject());
return commonEnvConfig;
}
}
Usage:
Object value = PropertiesConfig.commonEnvConfig.getProperty("key.subkey");
For executing pure SQL statements (I Don't Know About the FRAMEWORK- CodeIGNITER!!!) you can use SUB QUERY! The Syntax Would be as follows
SELECT t1.id
FROM example t1 INNER JOIN
(select id from (example2 t1
join example3 t2
on t1
.id
= t2
.id
)) as t2 ON t1.id = t2.id;
Hope you Get My Point!
How about :
val value = 1.4142135623730951
//3 decimal places
println((value * 1000).round / 1000.toDouble)
//4 decimal places
println((value * 10000).round / 10000.toDouble)
Goto processes in mysql.
So can see there is task still working.
Kill the particular process or wait until process complete.
I've found the following "cheat" to work very neatly and error-free
> dimnames <- list(time=c(0, 0.5, 1), name=c("C_0", "C_1"))
> mat <- matrix(data, ncol=2, nrow=3, dimnames=dimnames)
> head(mat, 2) #this returns the number of rows indicated in a data frame format
> df <- data.frame(head(mat, 2)) #"data.frame" might not be necessary
Et voila!
I personally use if/else statement in children with this kind of block statement. It only supports on Dart version 2.3.0 above.
if / else
Column(
children: [
if (_selectedIndex == 0) ...[
DayScreen(),
] else ...[
StatsScreen(),
],
],
),
if / else if
Column(
children: [
if (_selectedIndex == 0) ...[
DayScreen(),
] else if(_selectedIndex == 1)...[
StatsScreen(),
],
],
),
CN refers to class name, so put in your LDAP query CN=Users. Should work.
if you did change the httpd.conf file located under conf_files folder, don't use windows notepad, you need a unix text editor, try TED pad, after making any changes to your httpd.conf file save it. ps: if you use a dos/windows editor you will end up with an "Error in Apache file changed" message. so do be careful.... Salam
I have changed it in the following steps:
1) please add this dependency on your pubspec.yaml page
dev_dependencies:
flutter_test:
sdk: flutter
flutter_launcher_icons: ^0.7.4
2) you have to upload an image/icon on your project which you want to see as a launcher icon. (i have created a folder name:image in my project then upload the logo.png in the image folder). Now you have to add the below codes and paste your image path on image_path: in pubspec.yaml page.
flutter_icons:
image_path: "images/logo.png"
android: true
ios: true
3) Go to terminal and execute this command:
flutter pub get
4) After executing the command then enter below command:
flutter pub run flutter_launcher_icons:main
5) Done
N.B: (of course add an updated dependency from
https://pub.dev/packages/flutter_launcher_icons#-installing-tab-
)
You can use below method :
Route::getCurrentRoute()->getPath();
In Laravel version > 6.0, You can use below methods:
$route = Route::current();
$name = Route::currentRouteName();
$action = Route::currentRouteAction();
You could make use of the Javascript DOM API. In particular, look at the createElement() method.
You could create a re-usable function that will create an image like so...
function show_image(src, width, height, alt) {
var img = document.createElement("img");
img.src = src;
img.width = width;
img.height = height;
img.alt = alt;
// This next line will just add it to the <body> tag
document.body.appendChild(img);
}
Then you could use it like this...
<button onclick=
"show_image('http://google.com/images/logo.gif',
276,
110,
'Google Logo');">Add Google Logo</button>
Lets get at the root of the question, how to address the last element of a List safely...
Assuming
List<string> myList = new List<string>();
Then
//NOT safe on an empty list!
string myString = myList[myList.Count -1];
//equivalent to the above line when Count is 0, bad index
string otherString = myList[-1];
"count-1" is a bad habit unless you first guarantee the list is not empty.
There is not a convenient way around checking for the empty list except to do it.
The shortest way I can think of is
string myString = (myList.Count != 0) ? myList [ myList.Count-1 ] : "";
you could go all out and make a delegate that always returns true, and pass it to FindLast, which will return the last value (or default constructed valye if the list is empty). This function starts at the end of the list so will be Big O(1) or constant time, despite the method normally being O(n).
//somewhere in your codebase, a strange delegate is defined
private static bool alwaysTrue(string in)
{
return true;
}
//Wherever you are working with the list
string myString = myList.FindLast(alwaysTrue);
The FindLast method is ugly if you count the delegate part, but it only needs to be declared one place. If the list is empty, it will return a default constructed value of the list type "" for string. Taking the alwaysTrue delegate a step further, making it a template instead of string type, would be more useful.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.your_external_website.com");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$result = curl_exec($ch);
curl_close($ch);
is best for http url, But how to open https url help me
info
is a pointer to a dictionary - you keep adding the same pointer to your list contact
.
Insert info = {}
into the loop and it should solve the problem:
...
content = []
for iframe in soup.find_all('iframe'):
info = {}
info['src'] = iframe.get('src')
info['height'] = iframe.get('height')
info['width'] = iframe.get('width')
...
Based on @md-nazrul-islam reply, This is what I did with SCSS:
ul.ui-autocomplete {
position: absolute;
top: 100%;
left: 0;
z-index: 1000;
float: left;
display: none;
min-width: 160px;
margin: 0 0 10px 25px;
list-style: none;
background-color: #ffffff;
border: 1px solid #ccc;
border-color: rgba(0, 0, 0, 0.2);
//@include border-radius(5px);
@include box-shadow( rgba(0, 0, 0, 0.1) 0 5px 10px );
@include background-clip(padding-box);
*border-right-width: 2px;
*border-bottom-width: 2px;
li.ui-menu-item{
padding:0 .5em;
line-height:2em;
font-size:.8em;
&.ui-state-focus{
background: #F7F7F7;
}
}
}
ActiveX
is supported by Chrome.
Chrome check parameters defined in : control panel/Internet option/Security
.
Nevertheless,if it's possible to define four different area with IE
, Chrome
only check "Internet
" area.
<script>
$(function(){
var scroll_pos=(0);
$('html, body').animate({scrollTop:(scroll_pos)}, '2000');
});
</script>
Edit:
$('html, body').animate({scrollTop:(scroll_pos)}, 2000);
Another way scroll with top and left margin:
window.scrollTo({ top: 100, left: 100, behavior: 'smooth' });
As johnnyynnoj mentioned ng-repeat creates a new scope. I would in fact use a function to set the value. See plunker
JS:
$scope.setSelected = function(selected) {
$scope.selected = selected;
}
HTML:
{{ selected }}
<ul>
<li ng-class="{current: selected == 100}">
<a href ng:click="setSelected(100)">ABC</a>
</li>
<li ng-class="{current: selected == 101}">
<a href ng:click="setSelected(101)">DEF</a>
</li>
<li ng-class="{current: selected == $index }"
ng-repeat="x in [4,5,6,7]">
<a href ng:click="setSelected($index)">A{{$index}}</a>
</li>
</ul>
<div
ng:show="selected == 100">
100
</div>
<div
ng:show="selected == 101">
101
</div>
<div ng-repeat="x in [4,5,6,7]"
ng:show="selected == $index">
{{ $index }}
</div>
Using jQuery it is very simple assuming the URL you wish to post to is on the same server or has implemented CORS
$(function() {
$("#employeeLink").on("click",function(e) {
e.preventDefault(); // cancel the link itself
$.post(this.href,function(data) {
$("#someContainer").html(data);
});
});
});
If you insist on using frames which I strongly discourage, have a form and submit it with the link
<form action="employee.action" method="post" target="myFrame" id="myForm"></form>
and use (in plain JS)
window.addEventListener("load",function() {
document.getElementById("employeeLink").addEventListener("click",function(e) {
e.preventDefault(); // cancel the link
document.getElementById("myForm").submit(); // but make sure nothing has name or ID="submit"
});
});
Without a form we need to make one
window.addEventListener("load",function() {
document.getElementById("employeeLink").addEventListener("click",function(e) {
e.preventDefault(); // cancel the actual link
var myForm = document.createElement("form");
myForm.action=this.href;// the href of the link
myForm.target="myFrame";
myForm.method="POST";
myForm.submit();
});
});
if you want to stay DRY, use an include.
{% if foo %}
{% with a as b %}
{% include "snipet.html" %}
{% endwith %}
{% else %}
{% with bar as b %}
{% include "snipet.html" %}
{% endwith %}
{% endif %}
or, even better would be to write a method on the model that encapsulates the core logic:
def Patient(models.Model):
....
def get_legally_responsible_party(self):
if self.age > 18:
return self
else:
return self.parent
Then in the template:
{% with patient.get_legally_responsible_party as p %}
Do html stuff
{% endwith %}
Then in the future, if the logic for who is legally responsible changes you have a single place to change the logic -- far more DRY than having to change if statements in a dozen templates.
If you install Web Essentials into Visual studio you can go to Edit => Past special => paste JSON as class.
That is probably the easiest there is.
Web Essentials: http://vswebessentials.com/
If you want to authenticate against a user name and password and without an authorization cookie, the MVC4 Authorize attribute won't work out of the box. However, you can add the following helper method to your controller to accept basic authentication headers. Call it from the beginning of your controller's methods.
void EnsureAuthenticated(string role)
{
string[] parts = UTF8Encoding.UTF8.GetString(Convert.FromBase64String(Request.Headers.Authorization.Parameter)).Split(':');
if (parts.Length != 2 || !Membership.ValidateUser(parts[0], parts[1]))
throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.Unauthorized, "No account with that username and password"));
if (role != null && !Roles.IsUserInRole(parts[0], role))
throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.Unauthorized, "An administrator account is required"));
}
From the client side, this helper creates a HttpClient
with the authentication header in place:
static HttpClient CreateBasicAuthenticationHttpClient(string userName, string password)
{
var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(UTF8Encoding.UTF8.GetBytes(userName + ':' + password)));
return client;
}
Try
let check = inp=> inp.nextElementSibling.disabled = !inp.value;
_x000D_
<input type="text" name="textField" oninput="check(this)"/>_x000D_
<input type="submit" value="send" disabled />
_x000D_
I think what you really want is an ArrayList or Vector. Arrays in Java are not like those in Javascript.
document.getElementsByClassName
returns a NodeList
, not a single element, I'd recommend either using jQuery, since you'd only have to use something like $('.new').toggle()
or if you want plain JS try :
function toggle_by_class(cls, on) {
var lst = document.getElementsByClassName(cls);
for(var i = 0; i < lst.length; ++i) {
lst[i].style.display = on ? '' : 'none';
}
}
If you have a for loop such as the one below.
Change @item.StartDate to @item.StartDate.Value.ToShortDateString()
This will remove the time just in case you can't annotate your property in the model like in my case.
<table>
<tr>
<th>Type</th>
<th>Start Date</th>
</tr>
@foreach (var item in Model.TestList) {
<tr>
<td>@item.TypeName</td>
<td>@item.StartDate.Value.ToShortDateString()</td>
</tr>
}
</table>
You can do this by creating a constraint and connecting it via interface builder
See explanation: Auto_Layout_Constraints_in_Interface_Builder
raywenderlich beginning-auto-layout
AutolayoutPG Articles constraint Fundamentals
@interface ViewController : UIViewController {
IBOutlet NSLayoutConstraint *leadingSpaceConstraint;
IBOutlet NSLayoutConstraint *topSpaceConstraint;
}
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *leadingSpaceConstraint;
connect this Constraint outlet with your sub views Constraint or connect super views Constraint too and set it according to your requirements like this
self.leadingSpaceConstraint.constant = 10.0;//whatever you want to assign
I hope this clarifies it.
You should be able to use the /quiet
or /qn
options with msiexec
to perform a silent install.
MSI packages export public properties, which you can set with the PROPERTY=value
syntax on the end of the msiexec
parameters.
For example, this command installs a package with no UI and no reboot, with a log and two properties:
msiexec /i c:\path\to\package.msi /quiet /qn /norestart /log c:\path\to\install.log PROPERTY1=value1 PROPERTY2=value2
You can read the options for msiexec
by just running it with no options from Start -> Run.
Tuples are fixed size in nature whereas lists are dynamic.
In other words, a tuple
is immutable whereas a list
is mutable.
in
operator to check if an element exists in the tuple.Tuples are faster than lists. If you're defining a constant set of values and all you're ever going to do with it is iterate through it, use a tuple instead of a list.
It makes your code safer if you “write-protect” data that does not need to be changed. Using a tuple instead of a list is like having an implied assert statement that this data is constant, and that special thought (and a specific function) is required to override that.
Some tuples can be used as dictionary keys (specifically, tuples that contain immutable values like strings, numbers, and other tuples). Lists can never be used as dictionary keys, because lists are not immutable.
Source: Dive into Python 3
Short answer: I guess these annotations are only useful for your IDE to warn you of potentially null pointer errors.
As said in the "Clean Code" book, you should check your public method's parameters and also avoid checking invariants.
Another good tip is never returning null values, but using Null Object Pattern instead.
try out this....
using javascript
?document.getElementById('sel').value = 'car';??????????
using jQuery
$('#sel').val('car');
You're effectively scanning the list once to find the min value, then scanning it again to find the index, you can do both in one go:
from operator import itemgetter
min(enumerate(a), key=itemgetter(1))[0]
The first part of your question can be solved with just HTML & CSS; you'll need to use Javascript for the second part.
I'm not sure what you mean by "next to": on the same line and near, or on separate lines? If you want all of the radio buttons on the same line, just use margins to push them apart. If you want each of them on their own line, you have two options (unless you want to venture into float:
territory):
<br />s
to split the options apart and some CSS to vertically align them:<style type='text/css'>
.input input
{
width: 20px;
}
</style>
<div class="input radio">
<fieldset>
<legend>What color is the sky?</legend>
<input type="hidden" name="data[Submit][question]" value="" id="SubmitQuestion" />
<input type="radio" name="data[Submit][question]" id="SubmitQuestion1" value="1" />
<label for="SubmitQuestion1">A strange radient green.</label>
<br />
<input type="radio" name="data[Submit][question]" id="SubmitQuestion2" value="2" />
<label for="SubmitQuestion2">A dark gloomy orange</label>
<br />
<input type="radio" name="data[Submit][question]" id="SubmitQuestion3" value="3" />
<label for="SubmitQuestion3">A perfect glittering blue</label>
</fieldset>
</div>
Styling the <label>
is why you'll need to resort to Javascript. A library like jQuery
is perfect for this:
<style type='text/css'>
.input label.focused
{
background-color: #EEEEEE;
font-style: italic;
}
</style>
<script type='text/javascript' src='jquery.js'></script>
<script type='text/javascript'>
$(document).ready(function() {
$('.input :radio').focus(updateSelectedStyle);
$('.input :radio').blur(updateSelectedStyle);
$('.input :radio').change(updateSelectedStyle);
})
function updateSelectedStyle() {
$('.input :radio').removeClass('focused').next().removeClass('focused');
$('.input :radio:checked').addClass('focused').next().addClass('focused');
}
</script>
The focus
and blur
hooks are needed to make this work in IE.
//Component. home.ts :
contacts:IContacts[];
ionViewDidLoad() {
this.rest.getContacts()
.subscribe( res=> this.contacts= res as IContacts[]) ;
// reorderArray. accepts only Arrays
Reorder(indexes){
reorderArray(this.contacts, indexes)
}
// Service . res.ts
getContacts(): Observable<IContacts[]> {
return this.http.get<IContacts[]>(this.apiUrl+"?results=5")
And it works fine
Yes, although it's full of gotchas, since JPA is a bit peculiar. It's very much worth reading the documentation on injecting JPA EntityManager
and EntityManagerFactory
, without explicit Spring dependencies in your code:
http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/orm.html#orm-jpa
This allows you to either inject the EntityManagerFactory
, or else inject a thread-safe, transactional proxy of an EntityManager
directly. The latter makes for simpler code, but means more Spring plumbing is required.
A clean example that answers the Title
string output = "Error";
Task task = Task.Factory.StartNew(() =>
{
System.Threading.Thread.Sleep(2000);
output = "Complete";
});
task.Wait();
Console.WriteLine(output);
If you're in a heavily concurrent environment, then pure functional programming is useful. The lack of mutable state makes concurrency almost trivial. See Erlang.
In a multiparadigm language, you may want to model some things functionally if the existence of mutable state is must an implementation detail, and thus FP is a good model for the problem domain. For example, see list comprehensions in Python or std.range in the D programming language. These are inspired by functional programming.
I had to embed my $location.path()
statement like this because my digest was still running:
function routeMe(data) {
var waitForRender = function () {
if ($http.pendingRequests.length > 0) {
$timeout(waitForRender);
} else {
$location.path(data);
}
};
$timeout(waitForRender);
}
If you want to output ALL verbosity, not just stdout. But also any printf statements made by the program, any warnings, infos, etc, you have to add 2>&1
at the end of the command line.
In your case, the command will be
Program.exe > file.txt 2>&1
If you want to pull a particular file from another branch just do
git checkout branch1 -- filenamefoo.txt
This will pull a version of the file from one branch into the current tree
I needed a 64-bit version of oracle.dataaccess.dll but this caused problems with other libraries I was using.
[BadImageFormatException: Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
I followed several steps above. Going to advance settings on the projects pool to toggle allow 32bit worked but I wasn't content to leave it like that so i turned it back on.
My project also had references that relied on Elmah and log4net references. I downloaded the latest version of these and my project was able to build and run fine without messing with the pools's allow 32bit setting.
If your Object represents a number, eg, such as an Integer, you can cast it to a Number then call the doubleValue() method.
Double asDouble(Object o) {
Double val = null;
if (o instanceof Number) {
val = ((Number) o).doubleValue();
}
return val;
}
A key compatibility issue is support for persistent connections. I recently worked on a server that "supported" HTTP/1.1, yet failed to close the connection when a client sent an HTTP/1.0 request. When writing a server that supports HTTP/1.1, be sure it also works well with HTTP/1.0-only clients.
They aren't the same though, are they? One is a copy, the other is a swap. Hence the function names.
My favourite is:
a = b;
Where a
and b
are vectors.
On a related note: the java compiler uses int to represent boolean since JVM has a limited support for the boolean type.See Section 3.3.4 The boolean type.
In JVM, the integer zero represents false, and any non-zero integer represents true (Source : Inside Java Virtual Machine by Bill Venners)
It's not much of an answer, but you might need to go old school and capture an image snapshot of the IIS process and debug it. You might also want to check out Tess Ferrandez's blog - she is a kick a** microsoft escalation engineer and her blog focuses on debugging windows ASP.NET, but the blog is relevant to windows debugging in general. If you select the ASP.NET tag (which is what I've linked to) then you'll see several items that are similar.
Use an escape clause:
select *
from (select '123abc456' AS result from dual
union all
select '123abc%456' AS result from dual
)
WHERE result LIKE '%abc\%%' escape '\'
Result
123abc%456
You can set your escape character to whatever you want. In this case, the default '\'. The escaped '\%' becomes a literal, the second '%' is not escaped, so again wild card.
Cross join will help to join multiple tables with no common fields.But be careful while joining as this join will give cartesian resultset of two tables. QUERY:
SELECT
table1.columnA
, table2,columnA
FROM table1
CROSS JOIN table2
Alternative way to join on some condition that is always true like
SELECT
table1.columnA
, table2,columnA
FROM table1
INNER JOIN table2 ON 1=1
But this type of query should be avoided for performance as well as coding standards.
With PowerShell, go to the path where your files are and then type this command and replace ENTER THE STRING YOU SEARCH HERE
(but keep the double quotes):
findstr /S /I /M /C:"ENTER THE STRING YOU SEARCH HERE" *.*
Have a nice day
In Windows 10, it's still 8191 characters...at least on my machine.
It just cuts off any text after 8191 characters. Well, actually, I got 8196 characters, and after 8196, then it just won't let me type any more.
Here's a script that will test how long of a statement you can use. Well, assuming you have gawk/awk installed.
echo rem this is a test of how long of a line that a .cmd script can generate >testbat.bat
gawk 'BEGIN {printf "echo -----";for (i=10;i^<=100000;i +=10) printf "%%06d----",i;print;print "pause";}' >>testbat.bat
testbat.bat
Actually, I've been looking at the various ways to do this "infinite" pagination, and even though the human notion of time is that it is infinite (even though we have a notion of the beginning and end of time), computers deal in the discrete. There is a minimum and maximum time (that can be adjusted as time goes on, remember the basis of the Y2K scare?).
Anyways, the point of this discussion is that it is/should be sufficient to support a relatively infinite date range through an actually finite date range. A great example of this is the Android framework's CalendarView
implementation, and the WeeksAdapter
within it. The default minimum date is in 1900 and the default maximum date is in 2100, this should cover 99% of the calendar use of anyone within a 10 year radius around today easily.
What they do in their implementation (focused on weeks) is compute the number of weeks between the minimum and maximum date. This becomes the number of pages in the pager. Remember that the pager doesn't need to maintain all of these pages simultaneously (setOffscreenPageLimit(int)
), it just needs to be able to create the page based on the page number (or index/position). In this case the index is the number of weeks that the week is from the minimum date. With this approach you just have to maintain the minimum date and the number of pages (distance to the maximum date), then for any page you can easily compute the week associated with that page. No dancing around the fact that ViewPager
doesn't support looping (a.k.a infinite pagination), and trying to force it to behave like it can scroll infinitely.
new FragmentStatePagerAdapter(getFragmentManager()) {
@Override
public Fragment getItem(int index) {
final Bundle arguments = new Bundle(getArguments());
final Calendar temp_calendar = Calendar.getInstance();
temp_calendar.setTimeInMillis(_minimum_date.getTimeInMillis());
temp_calendar.setFirstDayOfWeek(_calendar.getStartOfWeek());
temp_calendar.add(Calendar.WEEK_OF_YEAR, index);
// Moves to the first day of this week
temp_calendar.add(Calendar.DAY_OF_YEAR,
-UiUtils.modulus(temp_calendar.get(Calendar.DAY_OF_WEEK) - temp_calendar.getFirstDayOfWeek(),
7));
arguments.putLong(KEY_DATE, temp_calendar.getTimeInMillis());
return Fragment.instantiate(getActivity(), WeekDaysFragment.class.getName(), arguments);
}
@Override
public int getCount() {
return _total_number_of_weeks;
}
};
Then WeekDaysFragment
can easily display the week starting at the date passed in its arguments.
Alternatively, it seems that some version of the Calendar app on Android uses a ViewSwitcher
(which means there's only 2 pages, the one you see and the hidden page). It then changes the transition animation based on which way the user swiped and renders the next/previous page accordingly. In this way you get infinite pagination because it just switching between two pages infinitely. This requires using a View
for the page though, which is way I went with the first approach.
In general, if you want "infinite pagination", it's probably because your pages are based off of dates or times somehow. If this is the case consider using a finite subset of time that is relatively infinite instead. This is how CalendarView
is implemented for example. Or you can use the ViewSwitcher
approach. The advantage of these two approaches is that neither does anything particularly unusual with the ViewSwitcher
or ViewPager
, and doesn't require any tricks or reimplementation to coerce them to behave infinitely (ViewSwitcher
is already designed to switch between views infinitely, but ViewPager
is designed to work on a finite, but not necessarily constant, set of pages).
A tuple is immutable and thus you get the error you posted.
>>> pixels = [1, 2, 3]
>>> pixels[0] = 5
>>> pixels = (1, 2, 3)
>>> pixels[0] = 5
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'tuple' object does not support item assignment
In your specific case, as correctly pointed out in other answers, you should write:
pixel = (pixel[0] + 20, pixel[1], pixel[2])
a = []
b = []
m=input("enter no of rows: ")
n=input("enter no of coloumns: ")
for i in range(n):
a = []
for j in range(m):
a.append(input())
b.append(a)
Input : 1 2 3 4 5 6 7 8 9
Output : [ ['1', '2', '3'], ['4', '5', '6'], ['7', '8', '9'] ]
After hours of seaching and working, i found perfect solution.
// Initializing values
var isPlaying = true;
// On video playing toggle values
video.onplaying = function() {
isPlaying = true;
};
// On video pause toggle values
video.onpause = function() {
isPlaying = false;
};
// Play video function
function playVid() {
if (video.paused && !isPlaying) {
video.play();
}
}
// Pause video function
function pauseVid() {
if (!video.paused && isPlaying) {
video.pause();
}
}
After that, you can toggle play/pause as fast as you can, it will work properly.
Yes, opacity can only work on top-level windows. It uses a hardware feature of the video adapter, that doesn't support child windows, like Panel. The only top-level Control derived class in Winforms is Form.
Several of the 'pure' Winform controls, the ones that do their own painting instead of letting a native Windows control do the job, do however support a transparent BackColor. Panel is one of them. It uses a trick, it asks the Parent to draw itself to produce the background pixels. One side-effect of this trick is that overlapping controls doesn't work, you only see the parent pixels, not the overlapped controls.
This sample form shows it at work:
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
this.BackColor = Color.White;
panel1.BackColor = Color.FromArgb(25, Color.Black);
}
protected override void OnPaint(PaintEventArgs e) {
e.Graphics.DrawLine(Pens.Yellow, 0, 0, 100, 100);
}
}
If that's not good enough then you need to consider stacking forms on top of each other. Like this.
Notable perhaps is that this restriction is lifted in Windows 8. It no longer uses the video adapter overlay feature and DWM (aka Aero) cannot be turned off anymore. Which makes opacity/transparency on child windows easy to implement. Relying on this is of course future-music for a while to come. Windows 7 will be the next XP :)
So here I am answering my own question. I have got answers to all my queries from people who have build push notification services in the past.
Update (May 2018): Here is a comprehensive and a very well written doc on web push notification from Google.
Answer to the original questions asked 3 years ago:
- Can we use GCM/APNS to send push notification to all Web Browsers including Firefox & Safari?
Answer: Google has deprecated GCM as of April 2018. You can now use Firebase Cloud Messaging (FCM). This supports all platforms including web browsers.
- If not via GCM can we have our own back-end to do the same?
Answer: Yes, push notification can be sent from our own back-end. Support for the same has come to all major browsers.
Check this codelab from Google to better understand the implementation.
Some Tutorials:
Implementing own backend in various programming languages.:
Further Readings: - - Documentation from Firefox website can be read here. - A very good overview of Web Push by Google can be found here. - An FAQ answering most common confusions and questions.
Are there any free services to do the same? There are some companies that provide a similar solution in free, freemium and paid models. Am listing few below:
Note: When choosing a free service remember to read the TOS. Free services often work by collecting user data for various purposes including analytics.
Apart from that, you need to have HTTPS to send push notifications. However, you can get https freely via letsencrypt.org
function hideTr(tr) {
tr.find('td').wrapInner('<div style="display: block;" />').parent().find('td > div').slideUp(50, function () {
tr.hide();
var $set = jQuery(this);
$set.replaceWith($set.contents());
});
}
function showTr(tr) {
tr.show()
tr.find('td').wrapInner('<div style="display: none;" />').parent().find('td > div').slideDown(50, function() {
var $set = jQuery(this);
$set.replaceWith($set.contents());
});
}
you can use these methods like:
jQuery("[data-toggle-tr-trigger]").click(function() {
var $tr = jQuery(this).parents(trClass).nextUntil(trClass);
if($tr.is(':hidden')) {
showTr($tr);
} else {
hideTr($tr);
}
});
good points already made here, but while there is lots of information about how rendering of margins is accomplished by the browser, the why isn't quite answered yet:
"Why is margin-top:-8px not the same as margin-bottom:8px?"
what we also could ask is:
Why doesn't a positive bottom margin 'bump up' preceding elements, whereas a positive top-margin 'bumps down' following elements?
so what we see is that there is a difference in the rendering of margins depending on the side they are applied to - top (and left) margins are different from bottom (and right) ones.
things are becoming clearer when having a (simplified) look at how styles are applied by the browser: elements are rendered top-down in the viewport, starting in the top left corner (let's stick with the vertical rendering for now, keeping in mind that the horizontal one is treated the same).
consider the following html:
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
analogous to their position in code, these three boxes appear stacked 'top-down' in the browser (keeping things simple, we won't consider here the order
property of the css3 'flex-box' module). so, whenever styles are applied to box 3, preceding element's positions (for box 1 and 2) have already been determined, and shouldn't be altered any more for the sake of rendering speed.
now, imagine a top margin of -10px for box 3. instead of shifting up all preceding elements to gather some space, the browser will just push box 3 up, so it's rendered on top of (or underneath, depending on the z-index) any preceding elements. even if performance wasn't an issue, moving all elements up could mean shifting them out of the viewport, thus the current scrolling position would have to be altered to have everything visible again.
same applies to a bottom margin for box 3, both negative and positive: instead of influencing already evaluated elements, only a new 'starting point' for upcoming elements is determined. thus setting a positive bottom margin will push the following elements down; a negative one will push them up.
If you don't want to use OutlineButton
and want to stick to normal RaisedButton
, you can wrap your button in ClipRRect
or ClipOval
like:
ClipRRect(
borderRadius: BorderRadius.circular(40),
child: RaisedButton(
child: Text("Button"),
onPressed: () {},
),
),
I have python 3.5 with anaconda. First I tried everything given above but it did not work for me on windows 10 64bit. So I simply tried:-
If you just have one version, then type in cmd:
C:/>conda install tensorflow
for multiple versions of python, type in cmd:
C:/>conda install tensorflow python=version(e.g.python=3.5)
It works, just give it a try.
After installation open ipython console and import tensorflow:
import tensorflow
If tensorflow installed properly then you are ready to go. Enjoy machine learning:-)
you can set the dataset to grid as follows:
//assuming your dataset object is ds
datagridview1.datasource= ds;
datagridview1.datamember= tablename.ToString();
tablename is the name of the table, which you want to show on the grid.
I hope, it helps.
B.R.
In my experience JSON.stringify is slightly faster than util.inspect. I had to save the result object of a DB2 query as a json file, The query returned an object of 92k rows, the conversion took very long to complete with util.inspect, so I did the following test by writing the same 1000 record object to a file with both methods.
JSON.Stringify
fs.writeFile('./data.json', JSON.stringify(obj, null, 2));
Time: 3:57 (3 min 57 sec)
Result's format:
[
{
"PROB": "00001",
"BO": "AXZ",
"CNTRY": "649"
},
...
]
util.inspect
var util = require('util');
fs.writeFile('./data.json', util.inspect(obj, false, 2, false));
Time: 4:12 (4 min 12 sec)
Result's format:
[ { PROB: '00001',
BO: 'AXZ',
CNTRY: '649' },
...
]
Find *.pem
file and place it to the anchors
sub-directory or just simply link the *.pem
file to there.
yum install -y ca-certificates
update-ca-trust force-enable
sudo ln -s /etc/ssl/your-cert.pem /etc/pki/ca-trust/source/anchors/your-cert.pem
update-ca-trust
Here is ilovecomputer's answer packed into a function and directly usable. It also allows to reduce image sizes and works well.
The code assumes a folder inside input_dir that contains images ordered alphabetically by their name and outputs a pdf with the name of the folder and potentially a prefix string for the name.
import os
from PIL import Image
def convert_images_to_pdf(export_dir, input_dir, folder, prefix='', quality=20):
current_dir = os.path.join(input_dir, folder)
image_files = os.listdir(current_dir)
im_list = [Image.open(os.path.join(current_dir, image_file)) for image_file in image_files]
pdf_filename = os.path.join(export_dir, prefix + folder + '.pdf')
im_list[0].save(pdf_filename, "PDF", quality=quality, optimize=True, save_all=True, append_images=im_list[1:])
export_dir = r"D:\pdfs"
input_dir = r"D:\image_folders"
folders = os.listdir(input_dir)
[convert_images_to_pdf(export_dir, input_dir, folder, prefix='') for folder in folders];