No answere worked for my case, where I had a string variable containing unicode chars, and no encode-decode explained here did the work.
If I do in a Terminal
echo "no me llama mucho la atenci\u00f3n"
or
python3
>>> print("no me llama mucho la atenci\u00f3n")
The output is correct:
output: no me llama mucho la atención
But working with scripts loading this string variable didn't work.
This is what worked on my case, in case helps anybody:
string_to_convert = "no me llama mucho la atenci\u00f3n"
print(json.dumps(json.loads(r'"%s"' % string_to_convert), ensure_ascii=False))
output: no me llama mucho la atención
I have solved above problem Applying below steps
And after you made thses changes, do following changes in your web.config
<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v12.0;AttachDbFilename=|DataDirectory|\aspnet-Real-Time-Commenting-20170927122714.mdf;Initial Catalog=aspnet-Real-Time-Commenting-20170927122714;Integrated Security=true" providerName="System.Data.SqlClient" />
With the release of Java 5, the product version was made distinct from the developer version as described here
app.factory('persistObject', function () {
var persistObject = [];
function set(objectName, data) {
persistObject[objectName] = data;
}
function get(objectName) {
return persistObject[objectName];
}
return {
set: set,
get: get
}
});
Fill it with data like this
persistObject.set('objectName', data);
Get the object data like this
persistObject.get('objectName');
interesting, datepicker default date is current date as I found,
but you can set date by
$("#yourinput").datepicker( "setDate" , "7/11/2011" );
don't forget to check you system date :)
you're almost there: just don't call toString()
on Html.fromHtml()
and you get a Spanned Object which will do the job ;)
tvHide.setText(Html.fromHtml("<p><u>Hide post</u></p>"));
I guess that you need a formatted output.
System.out.printf("%.2f",d);
Store it anywhere in an accessible location except of the IDE's project folder aka the server's deploy folder, for reasons mentioned in the answer to Uploaded image only available after refreshing the page:
Changes in the IDE's project folder does not immediately get reflected in the server's work folder. There's kind of a background job in the IDE which takes care that the server's work folder get synced with last updates (this is in IDE terms called "publishing"). This is the main cause of the problem you're seeing.
In real world code there are circumstances where storing uploaded files in the webapp's deploy folder will not work at all. Some servers do (either by default or by configuration) not expand the deployed WAR file into the local disk file system, but instead fully in the memory. You can't create new files in the memory without basically editing the deployed WAR file and redeploying it.
Even when the server expands the deployed WAR file into the local disk file system, all newly created files will get lost on a redeploy or even a simple restart, simply because those new files are not part of the original WAR file.
It really doesn't matter to me or anyone else where exactly on the local disk file system it will be saved, as long as you do not ever use getRealPath()
method. Using that method is in any case alarming.
The path to the storage location can in turn be definied in many ways. You have to do it all by yourself. Perhaps this is where your confusion is caused because you somehow expected that the server does that all automagically. Please note that @MultipartConfig(location)
does not specify the final upload destination, but the temporary storage location for the case file size exceeds memory storage threshold.
So, the path to the final storage location can be definied in either of the following ways:
Hardcoded:
File uploads = new File("/path/to/uploads");
Environment variable via SET UPLOAD_LOCATION=/path/to/uploads
:
File uploads = new File(System.getenv("UPLOAD_LOCATION"));
VM argument during server startup via -Dupload.location="/path/to/uploads"
:
File uploads = new File(System.getProperty("upload.location"));
*.properties
file entry as upload.location=/path/to/uploads
:
File uploads = new File(properties.getProperty("upload.location"));
web.xml
<context-param>
with name upload.location
and value /path/to/uploads
:
File uploads = new File(getServletContext().getInitParameter("upload.location"));
If any, use the server-provided location, e.g. in JBoss AS/WildFly:
File uploads = new File(System.getProperty("jboss.server.data.dir"), "uploads");
Either way, you can easily reference and save the file as follows:
File file = new File(uploads, "somefilename.ext");
try (InputStream input = part.getInputStream()) {
Files.copy(input, file.toPath());
}
Or, when you want to autogenerate an unique file name to prevent users from overwriting existing files with coincidentally the same name:
File file = File.createTempFile("somefilename-", ".ext", uploads);
try (InputStream input = part.getInputStream()) {
Files.copy(input, file.toPath(), StandardCopyOption.REPLACE_EXISTING);
}
How to obtain part
in JSP/Servlet is answered in How to upload files to server using JSP/Servlet? and how to obtain part
in JSF is answered in How to upload file using JSF 2.2 <h:inputFile>? Where is the saved File?
Note: do not use Part#write()
as it interprets the path relative to the temporary storage location defined in @MultipartConfig(location)
.
To find out size of S3 bucket using AWS Console:
Hope this helps.
As long as your program's in a sane state, you can also call (void)puts(your_string)
to print it to stdout. Same principle applies to all functions available to the debugger, actually.
You can use the path
module to join the path of the directory in which helper1.js
lives to the relative path of foobar.json
. This will give you the absolute path to foobar.json
.
var fs = require('fs');
var path = require('path');
var jsonPath = path.join(__dirname, '..', 'config', 'dev', 'foobar.json');
var jsonString = fs.readFileSync(jsonPath, 'utf8');
This should work on Linux, OSX, and Windows assuming a UTF8 encoding.
I think the documentation is reasonably helpful!
If you read it again, it says that adding open graph elements on your website will make your website act as a facebook page and you'll get the ability to publish updates to them etc.
So I think it's up to you - you can either just have a page with no OG elements, which is less work but also less 'rewarding' for you.
If you do use og, then set type to: blog
Finally: fb:admins
or fb:app_id
- A comma-separated list of either the Facebook IDs of page administrators or a Facebook Platform application ID. At a minimum, include only your own Facebook ID.
So just put your own fbid in there. As a tip, you can easily get this by looking at the url of your profile photo on facebook.
Sending email programmatically with Kotlin.
I also found this list of email POP services really helpful:
How to use:
val auth = EmailService.UserPassAuthenticator("yourUser", "yourPass")
val to = listOf(InternetAddress("[email protected]"))
val from = InternetAddress("[email protected]")
val email = EmailService.Email(auth, to, from, "Test Subject", "Hello Body World")
val emailService = EmailService("yourSmtpServer", 587)
GlobalScope.launch { // or however you do background threads
emailService.send(email)
}
The code:
import java.util.*
import javax.mail.*
import javax.mail.internet.InternetAddress
import javax.mail.internet.MimeBodyPart
import javax.mail.internet.MimeMessage
import javax.mail.internet.MimeMultipart
class EmailService(private var server: String, private var port: Int) {
data class Email(
val auth: Authenticator,
val toList: List<InternetAddress>,
val from: Address,
val subject: String,
val body: String
)
class UserPassAuthenticator(private val username: String, private val password: String) : Authenticator() {
override fun getPasswordAuthentication(): PasswordAuthentication {
return PasswordAuthentication(username, password)
}
}
fun send(email: Email) {
val props = Properties()
props["mail.smtp.auth"] = "true"
props["mail.user"] = email.from
props["mail.smtp.host"] = server
props["mail.smtp.port"] = port
props["mail.smtp.starttls.enable"] = "true"
props["mail.smtp.ssl.trust"] = server
props["mail.mime.charset"] = "UTF-8"
val msg: Message = MimeMessage(Session.getDefaultInstance(props, email.auth))
msg.setFrom(email.from)
msg.sentDate = Calendar.getInstance().time
msg.setRecipients(Message.RecipientType.TO, email.toList.toTypedArray())
// msg.setRecipients(Message.RecipientType.CC, email.ccList.toTypedArray())
// msg.setRecipients(Message.RecipientType.BCC, email.bccList.toTypedArray())
msg.replyTo = arrayOf(email.from)
msg.addHeader("X-Mailer", CLIENT_NAME)
msg.addHeader("Precedence", "bulk")
msg.subject = email.subject
msg.setContent(MimeMultipart().apply {
addBodyPart(MimeBodyPart().apply {
setText(email.body, "iso-8859-1")
//setContent(email.htmlBody, "text/html; charset=UTF-8")
})
})
Transport.send(msg)
}
companion object {
const val CLIENT_NAME = "Android StackOverflow programmatic email"
}
}
Gradle:
dependencies {
implementation 'com.sun.mail:android-mail:1.6.4'
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3"
}
AndroidManifest:
<uses-permission name="android.permission.INTERNET" />
I know I'm late to the party but I thought I'd add what I ended up using for this - which is to simply check if the file upload input does not contain a truthy value with the not operator & JQuery like so:
if (!$('#videoUploadFile').val()) {
alert('Please Upload File');
}
Note that if this is in a form, you may also want to wrap it with the following handler to prevent the form from submitting:
$(document).on("click", ":submit", function (e) {
if (!$('#videoUploadFile').val()) {
e.preventDefault();
alert('Please Upload File');
}
}
If you are doing what I believe you are trying to do, you'll need something a little more like this:
table {
border-collapse: collapse;
}
table td, table th {
border: 1px solid black;
}
table tr:first-child th {
border-top: 0;
}
table tr:last-child td {
border-bottom: 0;
}
table tr td:first-child,
table tr th:first-child {
border-left: 0;
}
table tr td:last-child,
table tr th:last-child {
border-right: 0;
}
The problem is that you are setting a 'full border' around all the cells, which make it appear as if you have a border around the entire table.
Cheers.
EDIT: A little more info on those pseudo-classes can be found on quirksmode, and, as to be expected, you are pretty much S.O.L. in terms of IE support.
Simple Example:
videoSource=test.mp4
videoEncoded=test2.mp4
videoSubtitle=test.srt
videoFontSize=24
ffmpeg -i "$videoSource" -vf subtitles="$videoSubtitle":force_style='Fontsize="$videoFontSize"' "$videoEncoded"
Only replace the linux variables
The simplest way to remove duplicates whilst preserving order is to use collections.OrderedDict (Python 2.7+).
from collections import OrderedDict
d = OrderedDict()
for x in mylist:
d[x] = True
print d.iterkeys()
Writing the properties file with multiple comments is not supported. Why ?
PropertyFile.java
public class PropertyFile extends Task {
/* ========================================================================
*
* Instance variables.
*/
// Use this to prepend a message to the properties file
private String comment;
private Properties properties;
The ant property file task is backed by a java.util.Properties
class which stores comments using the store() method. Only one comment is taken from the task and that is passed on to the Properties
class to save into the file.
The way to get around this is to write your own task that is backed by commons properties instead of java.util.Properties
. The commons properties file is backed by a property layout which allows settings comments for individual keys in the properties file. Save the properties file with the save() method and modify the new task to accept multiple comments through <comment>
elements.
I assume you already know that MongoDB is a NoSQL database system which stores data in the form of BSON documents. Your question, however is about the packages for Node.js.
In terms of Node.js, mongodb is the native driver for interacting with a mongodb instance and mongoose is an Object modeling tool for MongoDB.
Mongoose is built on top of the MongoDB driver to provide programmers with a way to model their data.
EDIT: I do not want to comment on which is better, as this would make this answer opinionated. However I will list some advantages and disadvantages of using both approaches.
Using Mongoose, a user can define the schema for the documents in a particular collection. It provides a lot of convenience in the creation and management of data in MongoDB. On the downside, learning mongoose can take some time, and has some limitations in handling schemas that are quite complex.
However, if your collection schema is unpredictable, or you want a Mongo-shell like experience inside Node.js, then go ahead and use the MongoDB driver. It is the simplest to pick up. The downside here is that you will have to write larger amounts of code for validating the data, and the risk of errors is higher.
The answer is due to the fact that Google Chrome uses an SQLite file to save cookies. It resides under:
C:\Users\<your_username>\AppData\Local\Google\Chrome\User Data\Default\
inside Cookies
file. (which is an SQLite database file)
So it's not a file stored on hard drive but a row in an SQLite database file which can be read by a third party program such as: SQLite Database Browser
EDIT: Thanks to @Chexpir, it is also good to know that the values are stored encrypted.
the answers on this page eluded me until i found the show package details option
Generally, you should only catch the exceptions you can actually handle. That means be as specific as possible when catching exceptions. Catching all exceptions is rarely a good idea and ignoring all exceptions is almost always a very bad idea.
I can only think of a few instances where an empty catch block has some meaningful purpose. If whatever specific exception, you are catching is "handled" by just reattempting the action there would be no need to do anything in the catch block. However, it would still be a good idea to log the fact that the exception occurred.
Another example: CLR 2.0 changed the way unhandled exceptions on the finalizer thread are treated. Prior to 2.0 the process was allowed to survive this scenario. In the current CLR the process is terminated in case of an unhandled exception on the finalizer thread.
Keep in mind that you should only implement a finalizer if you really need one and even then you should do a little as possible in the finalizer. But if whatever work your finalizer must do could throw an exception, you need to pick between the lesser of two evils. Do you want to shut down the application due to the unhandled exception? Or do you want to proceed in a more or less undefined state? At least in theory the latter may be the lesser of two evils in some cases. In those case the empty catch block would prevent the process from being terminated.
Below, code snippet, will help you in understanding the mutex-lock-unlock concept. Attempt dry-run on the code. (further by varying the wait-time and process-time, you can build you understanding).
Code for your reference:
#include <stdio.h>
#include <pthread.h>
void in_progress_feedback(int);
int global = 0;
pthread_mutex_t mutex;
void *compute(void *arg) {
pthread_t ptid = pthread_self();
printf("ptid : %08x \n", (int)ptid);
int i;
int lock_ret = 1;
do{
lock_ret = pthread_mutex_trylock(&mutex);
if(lock_ret){
printf("lock failed(%08x :: %d)..attempt again after 2secs..\n", (int)ptid, lock_ret);
sleep(2); //wait time here..
}else{ //ret =0 is successful lock
printf("lock success(%08x :: %d)..\n", (int)ptid, lock_ret);
break;
}
} while(lock_ret);
for (i = 0; i < 10*10 ; i++)
global++;
//do some stuff here
in_progress_feedback(10); //processing-time here..
lock_ret = pthread_mutex_unlock(&mutex);
printf("unlocked(%08x :: %d)..!\n", (int)ptid, lock_ret);
return NULL;
}
void in_progress_feedback(int prog_delay){
int i=0;
for(;i<prog_delay;i++){
printf(". ");
sleep(1);
fflush(stdout);
}
printf("\n");
fflush(stdout);
}
int main(void)
{
pthread_t tid0,tid1;
pthread_mutex_init(&mutex, NULL);
pthread_create(&tid0, NULL, compute, NULL);
pthread_create(&tid1, NULL, compute, NULL);
pthread_join(tid0, NULL);
pthread_join(tid1, NULL);
printf("global = %d\n", global);
pthread_mutex_destroy(&mutex);
return 0;
}
If you've upgraded to Mac OS X 10.8 Mountain Lion, and previously had a working system, all you should need to do is re-enable PHP as in Step 1 of the above chosen answer.
You may also find the following Preference Pane useful for managing "web sharing" (Apache web server), which replaces system functionality removed in OS X 10.8: http://clickontyler.com/blog/2012/02/web-sharing-mountain-lion/
I also had to re-add my virtual hosts include line to the httpd.conf
Code like this
<html>
<head>
<script type="text/javascript" src="path/to/script.js"></script>
<!--other script and also external css included over here-->
</head>
<body>
<form>
<select name="users" onChange="showUser(this.value)">
<option value="1">Tom</option>
<option value="2">Bob</option>
<option value="3">Joe</option>
</select>
</form>
</body>
</html>
I hope it will help you.... thanks
I believe there is a better solution than rewrite the RegistrationsController. I did exactly the same thing (I just have Organization instead of Company).
If you set properly your nested form, at model and view level, everything works like a charm.
My User model:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable, :lockable and :timeoutable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
has_many :owned_organizations, :class_name => 'Organization', :foreign_key => :owner_id
has_many :organization_memberships
has_many :organizations, :through => :organization_memberships
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :password, :password_confirmation, :remember_me, :name, :username, :owned_organizations_attributes
accepts_nested_attributes_for :owned_organizations
...
end
My Organization Model:
class Organization < ActiveRecord::Base
belongs_to :owner, :class_name => 'User'
has_many :organization_memberships
has_many :users, :through => :organization_memberships
has_many :contracts
attr_accessor :plan_name
after_create :set_owner_membership, :set_contract
...
end
My view : 'devise/registrations/new.html.erb'
<h2>Sign up</h2>
<% resource.owned_organizations.build if resource.owned_organizations.empty? %>
<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
<%= devise_error_messages! %>
<p><%= f.label :name %><br />
<%= f.text_field :name %></p>
<p><%= f.label :email %><br />
<%= f.text_field :email %></p>
<p><%= f.label :username %><br />
<%= f.text_field :username %></p>
<p><%= f.label :password %><br />
<%= f.password_field :password %></p>
<p><%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation %></p>
<%= f.fields_for :owned_organizations do |organization_form| %>
<p><%= organization_form.label :name %><br />
<%= organization_form.text_field :name %></p>
<p><%= organization_form.label :subdomain %><br />
<%= organization_form.text_field :subdomain %></p>
<%= organization_form.hidden_field :plan_name, :value => params[:plan] %>
<% end %>
<p><%= f.submit "Sign up" %></p>
<% end %>
<%= render :partial => "devise/shared/links" %>
This was alluded to in another comment, but you could try something like this.
Sub FilterAndDelete()
Application.DisplayAlerts = False
With Sheet1 'Change this to your sheet name
.AutoFilterMode = False
.Range("A3:K3").AutoFilter
.Range("A3:K3").AutoFilter Field:=5, Criteria1:="none"
.UsedRange.Offset(1, 0).Resize(ActiveSheet.UsedRange.Rows.Count - 1).Rows.Delete
End With
Application.DisplayAlerts = True
End Sub
I haven't tested this and it is from memory, so it may require some tweaking but it should get the job done without looping through thousands of rows. You'll need to remove the 11-Jul so that UsedRange
is correct or change the offset to 2 rows instead of 1 in the .Offset(1,0)
.
Generally, before I do .Delete
I will run the macro with .Select
instead of the Delete that way I can be sure the correct range will be deleted, that may be worth doing to check to ensure the appropriate range is being deleted.
You can use a library called underscore js. It gives a nice wrapper on the bind method and is a much cleaner syntax as well. Letting you execute the function in the specified scope.
_.bind(function, scope, *arguments)
I got this error Error: Cannot find module 'number-is-nan'
whereas the module actually exists. It was due to a bad/incomplete Node.js installation.
For Windows , as other answers suggest it, you need a clean Node installation :
npm
and npm_cache
in C:\Users\user\AppData\Roaming
npm init
or (npm init --yes
for default config)NODE_PATH
. This path is where your packages are installed. It's probably something likeNODE_PATH = C:\Users\user\node_modules or C:\Users\user\AppData\Roaming\npm\node_modules
npm
should work fineNote :
Try the last points before reinstalling Node.js, it could save you some time and avoid to re-install all your packages.
Before writing this off as impossible I suggest you look at the source code of the lsof command.
There may be restrictions but lsof seems capable of determining the file descriptor and file name. This information exists in the /proc filesystem so it should be possible to get at from your program.
To calculate the mean, loop through the list/array of numbers, keeping track of the partial sums and the length. Then return the sum/length
.
double sum = 0.0;
int length = 0;
for( double number : numbers ) {
sum += number;
length++;
}
return sum/length;
Variance is calculated similarly. Standard deviation is simply the square root of the variance:
double stddev = Math.sqrt( variance );
Couldn't comment so writing answer here. This is the clearest one-line I have seen:
import os
[os.path.join(path, name) for path, subdirs, files in os.walk(root) for name in files]
Try this:
x = a > b and 10 or 11
This is a sample of execution:
>>> a,b=5,7
>>> x = a > b and 10 or 11
>>> print x
11
Since this question is the first in search results, I'll put a different solution for a different problem here anyway, in order not to have a duplicate title.
The same error message can come up when running a query file in psql
without specifying a database. Since there is no use
statement in postgresql, we have to specify the database on the command line, for example:
psql -d db_name -f query_file.sql
$("#nicIssuedDate").prop('disabled', true);
This is works 100% with bootstrap Datepicker
for me one case was I just missed to maven update project which caused the same issue
maven update project and try if you see any errors in POM.xml
I just wanted to add to this one- because quite frankly, I banged my head against it for a while - and while very new to python - perhaps it will help someone else out.
writer.writerow(("ColName1", "ColName2", "ColName"))
for i in range(len(first_col_list)):
writer.writerow((first_col_list[i], second_col_list[i], third_col_list[i]))
You can use it without casting such as:
select sum(`stuff`) as mySum from test;
Or cast it to decimal:
select sum(cast(`stuff` as decimal(4,2))) as mySum from test;
EDIT
For SQL Server, you can use:
select sum(cast(stuff as decimal(5,2))) as mySum from test;
WebClient
doesn't have a direct support for form data, but you can send a HTTP post by using the UploadString method:
Using client as new WebClient
result = client.UploadString(someurl, "param1=somevalue¶m2=othervalue")
End Using
Whenever you have a known pattern (i.e. you do not use a variable to build a RegExp), use literal regex notation where you only need to use single backslashes to escape special regex metacharacters:
var re = /I like your Apartment\. Could we schedule a viewing\?/g;
^^ ^^
Whenever you need to build a RegExp dynamically, use RegExp
constructor notation where you MUST double backslashes for them to denote a literal backslash:
var questionmark_block = "\\?"; // A literal ?
var initial_subpattern = "I like your Apartment\\. Could we schedule a viewing"; // Note the dot must also be escaped to match a literal dot
var re = new RegExp(initial_subpattern + questionmark_block, "g");
And if you use the String.raw
string literal you may use \
as is (see an example of using a template string literal where you may put variables into the regex pattern):
const questionmark_block = String.raw`\?`; // A literal ?
const initial_subpattern = "I like your Apartment\\. Could we schedule a viewing";
const re = new RegExp(`${initial_subpattern}${questionmark_block}`, 'g'); // Building pattern from two variables
console.log(re); // => /I like your Apartment\. Could we schedule a viewing\?/g
_x000D_
A must-read: RegExp: Description at MDN.
You need to set up the remote repository on your client:
git remote add origin ssh://myserver.com/path/to/project
I encountered this with Visual Studio generated Service Reference files becoming too long in terms of the overall path length.
Shortened them by re-generating the Service Reference using svcutil.exe, deleting all the original Service Reference files.
svcutil can be called like this:
"C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools\SvcUtil.exe" /language:CS http://myservice /namespace:*,My.Namespace
My.Namespace should be replaced with the existing namespace in the generated service proxy (typically found in the Reference.cs file) to avoid compilation errors.
http://myservice
should be replaced with the service endpoint url.
It allows the Entity Framework to create a proxy around the virtual property so that the property can support lazy loading and more efficient change tracking. See What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First? for a more thorough discussion.
Edit to clarify "create a proxy around":
By "create a proxy around" I'm referring specifically to what the Entity Framework does. The Entity Framework requires your navigation properties to be marked as virtual so that lazy loading and efficient change tracking are supported. See Requirements for Creating POCO Proxies.
The Entity Framework uses inheritance to support this functionality, which is why it requires certain properties to be marked virtual in your base class POCOs. It literally creates new types that derive from your POCO types. So your POCO is acting as a base type for the Entity Framework's dynamically created subclasses. That's what I meant by "create a proxy around".
The dynamically created subclasses that the Entity Framework creates become apparent when using the Entity Framework at runtime, not at static compilation time. And only if you enable the Entity Framework's lazy loading or change tracking features. If you opt to never use the lazy loading or change tracking features of the Entity Framework (which is not the default) then you needn't declare any of your navigation properties as virtual. You are then responsible for loading those navigation properties yourself, either using what the Entity Framework refers to as "eager loading", or manually retrieving related types across multiple database queries. You can and should use lazy loading and change tracking features for your navigation properties in many scenarios though.
If you were to create a standalone class and mark properties as virtual, and simply construct and use instances of those classes in your own application, completely outside of the scope of the Entity Framework, then your virtual properties wouldn't gain you anything on their own.
Edit to describe why properties would be marked as virtual
Properties such as:
public ICollection<RSVP> RSVPs { get; set; }
Are not fields and should not be thought of as such. These are called getters and setters and at compilation time, they are converted into methods.
//Internally the code looks more like this:
public ICollection<RSVP> get_RSVPs()
{
return _RSVPs;
}
public void set_RSVPs(RSVP value)
{
_RSVPs = value;
}
private RSVP _RSVPs;
That's why they're marked as virtual for use in the Entity Framework, it allows the dynamically created classes to override the internally generated get
and set
functions. If your navigation property getter/setters are working for you in your Entity Framework usage, try revising them to just properties, recompile, and see if the Entity Framework is able to still function properly:
public virtual ICollection<RSVP> RSVPs;
Not really.....Some server may not check the "rcpt to:"
http://www.freesoft.org/CIE/RFC/1123/92.htm
Doing so is security risk.....
If the server do, you can write a bot to discovery every address on the server....
If the modulus (remainder) leftover from dividing by the square root is 0, then it is a perfect square.
def is_square(num: int) -> bool:
return num % math.sqrt(num) == 0
I checked this against a list of perfect squares going up to 1000.
If want to remove the word from only the start of the string, then you could do:
string[string.startswith(prefix) and len(prefix):]
Where string is your string variable and prefix is the prefix you want to remove from your string variable.
For example:
>>> papa = "papa is a good man. papa is the best."
>>> prefix = 'papa'
>>> papa[papa.startswith(prefix) and len(prefix):]
' is a good man. papa is the best.'
Requirements:
moment().fromNow()
functionality."today"
, "yesterday"
, "tomorrow"
, etc.Solution:
// call this function, passing-in your date
function dateToFromNowDaily( myDate ) {
// get from-now for this date
var fromNow = moment( myDate ).fromNow();
// ensure the date is displayed with today and yesterday
return moment( myDate ).calendar( null, {
// when the date is closer, specify custom values
lastWeek: '[Last] dddd',
lastDay: '[Yesterday]',
sameDay: '[Today]',
nextDay: '[Tomorrow]',
nextWeek: 'dddd',
// when the date is further away, use from-now functionality
sameElse: function () {
return "[" + fromNow + "]";
}
});
}
NB: From version 2.14.0, the formats argument to the calendar function can be a callback, see http://momentjs.com/docs/#/displaying/calendar-time/.
I think you're using the best method, though you could optimize it to:
$("<div/>");
Try this
frame$twohouses <- ifelse(frame$data>1, 2, 1)
frame
data twohouses
1 0 1
2 1 1
3 2 2
4 3 2
5 4 2
6 2 2
7 3 2
8 1 1
9 4 2
10 3 2
11 2 2
12 4 2
13 0 1
14 1 1
15 2 2
16 0 1
17 2 2
18 1 1
19 2 2
20 0 1
21 4 2
So I figured out what is wrong with this statement:
Import-Csv H:\Programs\scripts\SomeText.csv |`
(Original)
Import-Csv H:\Programs\scripts\SomeText.csv -Delimiter "|"
(Proposed, You must use quotations; otherwise, it will not work and ISE will give you an error)
It requires the -Delimiter "|"
, in order for the variable to be populated with an array of items. Otherwise, Powershell ISE does not display the list of items.
I cannot say that I would recommend the |
operator, since it is used to pipe cmdlets into one another.
I still cannot get the if statement to return true and output the values entered via the prompt.
If anyone else can help, it would be great. I still appreciate the post, it has been very helpful!
CREATE OR REPLACE FUNCTION IS_NUMERIC(P_INPUT IN VARCHAR2) RETURN INTEGER IS
RESULT INTEGER;
NUM NUMBER ;
BEGIN
NUM:=TO_NUMBER(P_INPUT);
RETURN 1;
EXCEPTION WHEN OTHERS THEN
RETURN 0;
END IS_NUMERIC;
/
Setting the content type and the content disposition as described above produces wildly varying results with different browsers:
IE8: SaveAs dialog as desired, and Excel as the default app. 100% good.
Firefox: SaveAs dialog does show up, but Firefox has no idea it is a spreadsheet. Suggests opening it with Visual Studio! 50% good
Chrome: the hints are fully ignored. The CSV data is shown in the browser. 0% good.
Of course in all of these cases I'm referring to the browsers as they come out of they box, with no customization of the mime/application mappings.
You can import svg and it use it like a image
import chatSVG from '../assets/images/undraw_typing_jie3.svg'
And ise it in img tag
<img src={chatSVG} className='iconChat' alt="Icon chat"/>
You're declaring everything in the parent page. So the references to window
and document
are to the parent page's. If you want to do stuff to the iframe
's, use iframe || iframe.contentWindow
to access its window
, and iframe.contentDocument || iframe.contentWindow.document
to access its document
.
There's a word for what's happening, possibly "lexical scope": What is lexical scope?
The only context of a scope is this. And in your example, the owner of the method is doc
, which is the iframe
's document
. Other than that, anything that's accessed in this function that uses known objects are the parent's (if not declared in the function). It would be a different story if the function were declared in a different place, but it's declared in the parent page.
This is how I would write it:
(function () {
var dom, win, doc, where, iframe;
iframe = document.createElement('iframe');
iframe.src = "javascript:false";
where = document.getElementsByTagName('script')[0];
where.parentNode.insertBefore(iframe, where);
win = iframe.contentWindow || iframe;
doc = iframe.contentDocument || iframe.contentWindow.document;
doc.open();
doc._l = (function (w, d) {
return function () {
w.vanishing_global = new Date().getTime();
var js = d.createElement("script");
js.src = 'test-vanishing-global.js?' + w.vanishing_global;
w.name = "foobar";
d.foobar = "foobar:" + Math.random();
d.foobar = "barfoo:" + Math.random();
d.body.appendChild(js);
};
})(win, doc);
doc.write('<body onload="document._l();"></body>');
doc.close();
})();
The aliasing of win
and doc
as w
and d
aren't necessary, it just might make it less confusing because of the misunderstanding of scopes. This way, they are parameters and you have to reference them to access the iframe
's stuff. If you want to access the parent's, you still use window
and document
.
I'm not sure what the implications are of adding methods to a document
(doc
in this case), but it might make more sense to set the _l
method on win
. That way, things can be run without a prefix...such as <body onload="_l();"></body>
If you want pure css, without the letter "x"....
Here are some awesome experimental icons that include an "x" in a circle that is made with CSS: http://nicolasgallagher.com/pure-css-gui-icons/demo/
You could just add one needed external jar file to the project. Go to your project-->java build path-->libraries, add external JARS.Then add your downloaded file from the formal website. My default name is commons-codec-1.10.jar
<table id="myData">
</table>
<script type="text/javascript">
$('#search').click(function() {
alert("submit handler has fired");
$.ajax({
type: 'POST',
url: 'cityResults.htm',
data: $('#cityDetails').serialize(),
success: function(data){
$.each(data, function( index, value ) {
var row = $("<tr><td>" + value.city + "</td><td>" + value.cStatus + "</td></tr>");
$("#myData").append(row);
});
},
error: function(jqXHR, textStatus, errorThrown){
alert('error: ' + textStatus + ': ' + errorThrown);
}
});
return false;//suppress natural form submission
});
</script>
loop through the data and append it to a table like the code above.
Simple solution which will work on,
Input scroll events
Copy paste via keyboard
Copy paste via mouse
Input type etc cases
<input id="maxLengthCheck"
name="maxLengthCheck"
type="number"
step="1"
min="0"
oninput="this.value = this.value > 5 ? 5 : Math.abs(this.value)" />
See there is condition on this.value > 5, just update 5 with your max limit.
Explanation:
If our input number is more then our limit update input value this.value with proper number Math.abs(this.value)
Else just make it to your max limit which is again 5.
There is a customization that went into Boto3 recently which helps with this (among other things). It is currently exposed on the low-level S3 client, and can be used like this:
s3_client = boto3.client('s3')
open('hello.txt').write('Hello, world!')
# Upload the file to S3
s3_client.upload_file('hello.txt', 'MyBucket', 'hello-remote.txt')
# Download the file from S3
s3_client.download_file('MyBucket', 'hello-remote.txt', 'hello2.txt')
print(open('hello2.txt').read())
These functions will automatically handle reading/writing files as well as doing multipart uploads in parallel for large files.
Note that s3_client.download_file
won't create a directory. It can be created as pathlib.Path('/path/to/file.txt').parent.mkdir(parents=True, exist_ok=True)
.
Combine the answer of @mgilson and @gnibbler, I found what I need was this:
d = {"name":"interpolator",
"children":[{'name':key,"size":value} for key,value in sample.items()]}
j = json.dumps(d, indent=4)
f = open('sample.json', 'w')
print >> f, j
f.close()
It this way, I got a pretty-print json file.
The tricks print >> f, j
is found from here:
http://www.anthonydebarros.com/2012/03/11/generate-json-from-sql-using-python/
Another option is to create a free Kiln account -- kiln round trips between git and hg with 100% metadata retention, so you can use it for a one time convert or use it to access a repository using whichever client you prefer.
You could use LINQ, but I would go with RemoveAll
method. I think that is the one that better expresses your intent.
var integers = new List<int> { 1, 2, 3, 4, 5 };
var remove = new List<int> { 1, 3, 5 };
integers.RemoveAll(i => remove.Contains(i));
Let:
>>> n = 1000
>>> x = np.arange(n)
>>> reps = 10000
Zero-cost allocations
A view does not take any additional memory. Thus, these declarations are instantaneous:
# New axis
x[np.newaxis, ...]
# Broadcast to specific shape
np.broadcast_to(x, (reps, n))
Forced allocation
If you want force the contents to reside in memory:
>>> %timeit np.array(np.broadcast_to(x, (reps, n)))
10.2 ms ± 62.3 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
>>> %timeit np.repeat(x[np.newaxis, :], reps, axis=0)
9.88 ms ± 52.4 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
>>> %timeit np.tile(x, (reps, 1))
9.97 ms ± 77.3 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
All three methods are roughly the same speed.
Computation
>>> a = np.arange(reps * n).reshape(reps, n)
>>> x_tiled = np.tile(x, (reps, 1))
>>> %timeit np.broadcast_to(x, (reps, n)) * a
17.1 ms ± 284 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
>>> %timeit x[np.newaxis, :] * a
17.5 ms ± 300 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
>>> %timeit x_tiled * a
17.6 ms ± 240 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
All three methods are roughly the same speed.
Conclusion
If you want to replicate before a computation, consider using one of the "zero-cost allocation" methods. You won't suffer the performance penalty of "forced allocation".
monkey --pct-syskeys 0
for development boards
Without this argument, the app won't open on a development board without keys / display:
adb shell monkey --pct-syskeys 0 -p com.cirosantilli.android_cheat.textviewbold 1
and fails with error:
SYS_KEYS has no physical keys but with factor 2.0%
Tested on HiKey960, Android O AOSP.
Learned from: https://github.com/ARM-software/lisa/pull/408
Also asked at: monkey test : If the Android system doesnt has physical keys ,what are the parameters need to be includeded in the command
Change the TIME_ZONE to your local time zone, and keep USE_TZ as True in 'setting.py':
TIME_ZONE = 'Asia/Shanghai'
USE_I18N = True
USE_L10N = True
USE_TZ = True
This will write and store the datetime object as UTC to the backend database.
Then use template tag to convert the UTC time in your frontend template as such:
<td>
{% load tz %}
{% get_current_timezone as tz %}
{% timezone tz %}
{{ message.log_date | time:'H:i:s' }}
{% endtimezone %}
</td>
or use the template filters concisely:
<td>
{% load tz %}
{{ message.log_date | localtime | time:'H:i:s' }}
</td>
You could check more details in the official doc: Default time zone and current time zone
When support for time zones is enabled, Django stores datetime information in UTC in the database, uses time-zone-aware datetime objects internally, and translates them to the end user’s time zone in templates and forms.
Case: Light text with jaggy web font on dark background Firefox (v35)/Windows
Example: Google Web Font Ruda
Surprising solution -
adding following property to the applied selectors:
selector {
text-shadow: 0 0 0;
}
Actually, result is the same just with text-shadow: 0 0;
, but I like to explicitly set blur-radius.
It's not an universal solution, but might help in some cases. Moreover I haven't experienced (also not thoroughly tested) negative performance impacts of this solution so far.
This CSS seems to work in Safari and Chrome:
div#div2
{
-webkit-transform:rotate(90deg); /* Chrome, Safari, Opera */
transform:rotate(90deg); /* Standard syntax */
}
and in the body:
<div id="div2"><img src="image.jpg" ></div>
But this (and the .rotate90 example above) pushes the rotated image higher up on the page than if it were un-rotated. Not sure how to control placement of the image relative to text or other rotated images.
Add the following dependencies
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.7</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.7</version>
</dependency>
Modify request as follows
$.ajax({
url:urlName,
type:"POST",
contentType: "application/json; charset=utf-8",
data: jsonString, //Stringified Json Object
async: false, //Cross-domain requests and dataType: "jsonp" requests do not support synchronous operation
cache: false, //This will force requested pages not to be cached by the browser
processData:false, //To avoid making query String instead of JSON
success: function(resposeJsonObject){
// Success Message Handler
}
});
Controller side
@RequestMapping(value = urlPattern , method = RequestMethod.POST)
public @ResponseBody Person save(@RequestBody Person jsonString) {
Person person=personService.savedata(jsonString);
return person;
}
@RequestBody
- Covert Json object to java
@ResponseBody
- convert Java object to json
I know this is silly, but in my case while I was getting the same error message, just changing the USB cable used to connect the device fixed the problem :O
Perhaps this might benefit someone else as well?!
The first solution is to use the java.util.Random
class:
import java.util.Random;
Random rand = new Random();
// Obtain a number between [0 - 49].
int n = rand.nextInt(50);
// Add 1 to the result to get a number from the required range
// (i.e., [1 - 50]).
n += 1;
Another solution is using Math.random()
:
double random = Math.random() * 49 + 1;
or
int random = (int)(Math.random() * 50 + 1);
DECLARE @test nvarchar(100)
SET @test = 'Foreign Tax Credit - 1997'
SELECT @test, left(@test, charindex('-', @test) - 2) AS LeftString,
right(@test, len(@test) - charindex('-', @test) - 1) AS RightString
opening a file using fopen
before we can read(or write) information from (to) a file on a disk we must open the file. to open the file we have called the function fopen.
1.firstly it searches on the disk the file to be opened.
2.then it loads the file from the disk into a place in memory called buffer.
3.it sets up a character pointer that points to the first character of the buffer.
this the way of behaviour of fopen function
there are some causes while buffering process,it may timedout. so while comparing fopen(high level i/o) to open (low level i/o) system call , and it is a faster more appropriate than fopen.
Aggregated List of Libraries
Just use order allow,deny
instead and remove the deny from all
line.
actually you shouldn't specify port in the host name. Mysql has special option for port (if port differs from default)
kind of
mysql --host=192.168.1.2 --port=3306
I'd just drop the database and then re-create it. On a UNIX or Linux system, that should do it:
$ dropdb development_db_name
$ createdb developmnent_db_name
That's how I do it, actually.
getconf
works both in Mac OS X and Linux, just in case you need it to be compatible with both systems:
$ getconf _NPROCESSORS_ONLN
12
If the goal is to create a grid with equal height rows, where the tallest cell in the grid sets the height for all rows, here's a quick and simple solution:
grid-auto-rows: 1fr
Grid Layout provides a unit for establishing flexible lengths in a grid container. This is the fr
unit. It is designed to distribute free space in the container and is somewhat analogous to the flex-grow
property in flexbox.
If you set all rows in a grid container to 1fr
, let's say like this:
grid-auto-rows: 1fr;
... then all rows will be equal height.
It doesn't really make sense off-the-bat because fr
is supposed to distribute free space. And if several rows have content with different heights, then when the space is distributed, some rows would be proportionally smaller and taller.
Except, buried deep in the grid spec is this little nugget:
7.2.3. Flexible Lengths: the
fr
unit...
When the available space is infinite (which happens when the grid container’s width or height is indefinite), flex-sized (
fr
) grid tracks are sized to their contents while retaining their respective proportions.The used size of each flex-sized grid track is computed by determining the
max-content
size of each flex-sized grid track and dividing that size by the respective flex factor to determine a “hypothetical1fr
size”.The maximum of those is used as the resolved
1fr
length (the flex fraction), which is then multiplied by each grid track’s flex factor to determine its final size.
So, if I'm reading this correctly, when dealing with a dynamically-sized grid (e.g., the height is indefinite), grid tracks (rows, in this case) are sized to their contents.
The height of each row is determined by the tallest (max-content
) grid item.
The maximum height of those rows becomes the length of 1fr
.
That's how 1fr
creates equal height rows in a grid container.
As noted in the question, equal height rows are not possible with flexbox.
Flex items can be equal height on the same row, but not across multiple rows.
This behavior is defined in the flexbox spec:
In a multi-line flex container, the cross size of each line is the minimum size necessary to contain the flex items on the line.
In other words, when there are multiple lines in a row-based flex container, the height of each line (the "cross size") is the minimum height necessary to contain the flex items on the line.
It's an array, so ==== ''
won't work (the === means it has to be an empty string.)
Use count() to identify the array has any elements (count returns a number, 1 or greater will evaluate to true, 0 = false.)
@if (count($status->replies) > 0)
// your HTML + foreach loop
@endif
I was looking into this issue a bit for my own purposes; I had a slice of structs (including some pointers) and I wanted to make sure I got it right; ended up on this thread, and wanted to share my results.
To practice, I did a little go playground: https://play.golang.org/p/9i4gPx3lnY
which evals to this:
package main
import "fmt"
type Blah struct {
babyKitten int
kittenSays *string
}
func main() {
meow := "meow"
Blahs := []Blah{}
fmt.Printf("Blahs: %v\n", Blahs)
Blahs = append(Blahs, Blah{1, &meow})
fmt.Printf("Blahs: %v\n", Blahs)
Blahs = append(Blahs, Blah{2, &meow})
fmt.Printf("Blahs: %v\n", Blahs)
//fmt.Printf("kittenSays: %v\n", *Blahs[0].kittenSays)
Blahs = nil
meow2 := "nyan"
fmt.Printf("Blahs: %v\n", Blahs)
Blahs = append(Blahs, Blah{1, &meow2})
fmt.Printf("Blahs: %v\n", Blahs)
fmt.Printf("kittenSays: %v\n", *Blahs[0].kittenSays)
}
Running that code as-is will show the same memory address for both "meow" and "meow2" variables as being the same:
Blahs: []
Blahs: [{1 0x1030e0c0}]
Blahs: [{1 0x1030e0c0} {2 0x1030e0c0}]
Blahs: []
Blahs: [{1 0x1030e0f0}]
kittenSays: nyan
which I think confirms that the struct is garbage collected. Oddly enough, uncommenting the commented print line, will yield different memory addresses for the meows:
Blahs: []
Blahs: [{1 0x1030e0c0}]
Blahs: [{1 0x1030e0c0} {2 0x1030e0c0}]
kittenSays: meow
Blahs: []
Blahs: [{1 0x1030e0f8}]
kittenSays: nyan
I think this may be due to the print being deferred in some way (?), but interesting illustration of some memory mgmt behavior, and one more vote for:
[]MyStruct = nil
I use the following object:
function Padder(len, pad) {
if (len === undefined) {
len = 1;
} else if (pad === undefined) {
pad = '0';
}
var pads = '';
while (pads.length < len) {
pads += pad;
}
this.pad = function (what) {
var s = what.toString();
return pads.substring(0, pads.length - s.length) + s;
};
}
With it you can easily define different "paddings":
var zero4 = new Padder(4);
zero4.pad(12); // "0012"
zero4.pad(12345); // "12345"
zero4.pad("xx"); // "00xx"
var x3 = new Padder(3, "x");
x3.pad(12); // "x12"
The problem for me was that I had .rnd in my home directory but it was owned by root. Deleting it and reissuing the openssl command fixed this.
Probably a bit late to answer this but I just found this thread and I had created my own code for it previously...
list = [1,2,3,4,5]
deleteList = []
processNo = 0
for item in list:
if condition:
print item
deleteList.insert(0, processNo)
processNo += 1
if len(deleteList) > 0:
for item in deleteList:
del list[item]
It may be a long way of doing it but seems to work well. I create a second list that only holds numbers that relate to the list item to delete. Note the "insert" inserts the list item number at position 0 and pushes the remainder along so when deleting the items, the list is deleted from the highest number back to the lowest number so the list stays in sequence.
The accepted answer worked fine for me, but expanding on gimenete's answer, I wanted a generic template I could use to pass through all query/path/header params (just as strings for now), and I came up the following template. I'm posting it here in case someone finds it useful:
#set($keys = [])
#foreach($key in $input.params().querystring.keySet())
#set($success = $keys.add($key))
#end
#foreach($key in $input.params().headers.keySet())
#if(!$keys.contains($key))
#set($success = $keys.add($key))
#end
#end
#foreach($key in $input.params().path.keySet())
#if(!$keys.contains($key))
#set($success = $keys.add($key))
#end
#end
{
#foreach($key in $keys)
"$key": "$util.escapeJavaScript($input.params($key))"#if($foreach.hasNext),#end
#end
}
As declaration of array list in java is like
public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, Cloneable, Serializable
There is numerous way you can create and initialize array list in java.
1) List list = new ArrayList();
2) List<type> myList = new ArrayList<>();
3) List<type> myList = new ArrayList<type>();
4) Using Utility class
List<Integer> list = Arrays.asList(8, 4);
Collections.unmodifiableList(Arrays.asList("a", "b", "c"));
5) Using static factory method
List<Integer> immutableList = List.of(1, 2);
6) Creation and initializing at a time
List<String> fixedSizeList = Arrays.asList(new String[] {"Male", "Female"});
Again you can create different types of list. All has their own characteristics
List a = new ArrayList();
List b = new LinkedList();
List c = new Vector();
List d = new Stack();
List e = new CopyOnWriteArrayList();
I guess you have installed the 2.7 version manually, while 2.6 comes from a package?
The simple answer is: uninstall python package.
The more complex one is: do not install manually in /usr/local. Build a package with 2.7 version and then upgrade.
Package handling depends on what distribution you use.
Simple Solution::
use {nativeQuery=true} in your query.
for example
@Query(value = "select d.id,d.name,d.breed,d.origin from Dog d",nativeQuery = true)
List<Dog> findALL();
you can use:
$('body').ready(function(){
$(document).on('change', '#elemID', function(){
// do something
});
});
It works with me.
s = "BINGO"
print(" ".join(s))
Should do it.
Only if you want to destroy previous session :
<?php
if(!isset($_SESSION))
{
session_start();
}
else
{
session_destroy();
session_start();
}
?>
or you can use
unset($_SESSION['variable_session _data'])
to destroy a particular session variable.
I think I might have figured out what you want to do. This will give a sorted list of all the files and all the directories, sorted by file size and size of the content in the directories.
(find . -depth 1 -type f -exec ls -s {} \;; find . -depth 1 -type d -exec du -s {} \;) | sort -n
$str = '';
$str_len = 8;
for($i = 0, $i < $str_len; $i++){
//97 is ascii code for 'a' and 122 is ascii code for z
$str .= chr(rand(97, 122));
}
return $str
Unfortunately, AFAIK you cannot run multiple SQL statements under one named query in Access in the traditional sense.
You can make several queries, then string them together with VBA (DoCmd.OpenQuery
if memory serves).
You can also string a bunch of things together with UNION if you wish.
Json Pointer seem's to be getting growing support too.
If you are already doing databinding:
<asp:Calendar ID="Calendar1" runat="server" SelectedDate="<%# DateTime.Today %>" />
Will do it. This does require that somewhere you are doing a Page.DataBind() call (or a databind call on a parent control). If you are not doing that and you absolutely do not want any codebehind on the page, then you'll have to create a usercontrol that contains a calendar control and sets its selecteddate.
Just create a new branch with git checkout -b ABC_1
; your uncommitted changes will be kept, and you then commit them to that branch.
You can use the for..in TypeScript operator to access the index when dealing with collections.
var test = [7,8,9];
for (var i in test) {
console.log(i + ': ' + test[i]);
}
Output:
0: 7
1: 8
2: 9
See Demo
update for mySQL 8 :
String jdbcUrl="jdbc:mysql://localhost:3306/youdatabase?useSSL=false&serverTimezone=UTC";
Check whether your Jdbc configurations and URL correct or wrong using the following code snippet.
import java.sql.Connection;
import java.sql.DriverManager;
public class TestJdbc {
public static void main(String[] args) {
//db name:testdb_version001
//useSSL=false (get rid of MySQL SSL warnings)
String jdbcUrl = "jdbc:mysql://localhost:3306/testdb_version001?useSSL=false";
String username="testdb";
String password ="testdb";
try{
System.out.println("Connecting to database :" +jdbcUrl);
Connection myConn =
DriverManager.getConnection(jdbcUrl,username,password);
System.out.println("Connection Successful...!");
}catch (Exception e){
e.printStackTrace();
//e.printStackTrace();
}
}
}
to resolve this kind of problem you should add two jar in your dependency POM (if use Maven)
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.1</version>
</dependency>
With SQL server you can use this
SELECT CONVERT(VARCHAR(10), GETDATE(), 101) AS [MM/DD/YYYY];
with mysql server you can do the following
SELECT * FROM my_table WHERE YEAR(date_field) = '2006' AND MONTH(date_field) = '9' AND DAY(date_field) = '11'
Based on the other answers, this is a simple example of how to accomplish the most common requirement:
const app = express()
app.use(express.static('public')) // relative path of client-side code
app.get('*', function(req, res) {
res.sendFile('index.html', { root: __dirname })
})
app.listen(process.env.PORT)
This also doubles as a simple way to respond with index.html on every request, because I'm using a star *
to catch all files that weren't found in your static (public) directory; which is the most common use case for web-apps. Change to /
to return the index only in the root path.
Export you Java Project as an Runnable Jar file rather than Jar.
I exported my project as Jar and even though the Manifest was present it gave me the error no main manifest attribute in jar even though the Manifest file was present in the Jar. However there is only one entry in the Manifest file and it didn't specify the Main class or Function to execute or any dependent JAR's
After exporting it as Runnable Jar file it works as expected.
Like this:
$(".target").each(function(){
var images = $(this).find(".scrolling img");
var width = images.width();
var imgLength = images.length;
$(this).find(".scrolling").width( width * imgLength * 1.2 );
});
The $(this)
refers to the current .target
which will be looped through. Within this .target
I'm looking for the .scrolling img
and get the width. And then keep on going...
Images with different widths
If you want to calculate the width of all images (when they have different widths) you can do it like this:
// Get the total width of a collection.
$.fn.getTotalWidth = function(){
var width = 0;
this.each(function(){
width += $(this).width();
});
return width;
}
$(".target").each(function(){
var images = $(this).find(".scrolling img");
var width = images.getTotalWidth();
$(this).find(".scrolling").width( width * 1.2 );
});
One case I recently encountered that required manual calls to GC.Collect()
was when working with large C++ objects that were wrapped in tiny managed C++ objects, which in turn were accessed from C#.
The garbage collector never got called because the amount of managed memory used was negligible, but the amount of unmanaged memory used was huge. Manually calling Dispose()
on the objects would require that I keep track of when objects are no longer needed myself, whereas calling GC.Collect()
will clean up any objects that are no longer referred.....
a csv-file is just like any other file a stream of characters. the getline reads from the file up to a delimiter however in your case the delimiter for the last item is not ' ' as you assume
getline(file, genero, ' ') ;
it is newline \n
so change that line to
getline(file, genero); // \n is default delimiter
There are several ways to parse cmdline args (e.g. GNU getopt (not portable) vs BSD (MacOS) getopt vs getopts) - all problematic. This solution
=
separator between option and argument-vxf
--color
vs --color=always
),--
to signal end of options, andExamples: Any of
# flag
-f
--foo
# option with required argument
-b"Hello World"
-b "Hello World"
--bar "Hello World"
--bar="Hello World"
# option with optional argument
--baz
--baz="Optional Hello"
#!/usr/bin/env bash
usage() {
cat - >&2 <<EOF
NAME
program-name.sh - Brief description
SYNOPSIS
program-name.sh [-h|--help]
program-name.sh [-f|--foo]
[-b|--bar <arg>]
[--baz[=<arg>]]
[--]
FILE ...
REQUIRED ARGUMENTS
FILE ...
input files
OPTIONS
-h, --help
Prints this and exits
-f, --foo
A flag option
-b, --bar <arg>
Option requiring an argument <arg>
--baz[=<arg>]
Option that has an optional argument <arg>. If <arg>
is not specified, defaults to 'DEFAULT'
--
Specify end of options; useful if the first non option
argument starts with a hyphen
EOF
}
fatal() {
for i; do
echo -e "${i}" >&2
done
exit 1
}
# For long option processing
next_arg() {
if [[ $OPTARG == *=* ]]; then
# for cases like '--opt=arg'
OPTARG="${OPTARG#*=}"
else
# for cases like '--opt arg'
OPTARG="${args[$OPTIND]}"
OPTIND=$((OPTIND + 1))
fi
}
# ':' means preceding option character expects one argument, except
# first ':' which make getopts run in silent mode. We handle errors with
# wildcard case catch. Long options are considered as the '-' character
optspec=":hfb:-:"
args=("" "$@") # dummy first element so $1 and $args[1] are aligned
while getopts "$optspec" optchar; do
case "$optchar" in
h) usage; exit 0 ;;
f) foo=1 ;;
b) bar="$OPTARG" ;;
-) # long option processing
case "$OPTARG" in
help)
usage; exit 0 ;;
foo)
foo=1 ;;
bar|bar=*) next_arg
bar="$OPTARG" ;;
baz)
baz=DEFAULT ;;
baz=*) next_arg
baz="$OPTARG" ;;
-) break ;;
*) fatal "Unknown option '--${OPTARG}'" "see '${0} --help' for usage" ;;
esac
;;
*) fatal "Unknown option: '-${OPTARG}'" "See '${0} --help' for usage" ;;
esac
done
shift $((OPTIND-1))
if [ "$#" -eq 0 ]; then
fatal "Expected at least one required argument FILE" \
"See '${0} --help' for usage"
fi
echo "foo=$foo, bar=$bar, baz=$baz, files=${@}"
Edit (2020.12.28): GitHub change default master branch to main branch since October 2020. See https://github.com/github/renaming
Update March 2013
Git 1.8.2 added the possibility to track branches.
"
git submodule
" started learning a new mode to integrate with the tip of the remote branch (as opposed to integrating with the commit recorded in the superproject's gitlink).
# add submodule to track master branch
git submodule add -b master [URL to Git repo];
# update your submodule
git submodule update --remote
If you had a submodule already present you now wish would track a branch, see "how to make an existing submodule track a branch".
Also see Vogella's tutorial on submodules for general information on submodules.
Note:
git submodule add -b . [URL to Git repo];
^^^
A special value of
.
is used to indicate that the name of the branch in the submodule should be the same name as the current branch in the current repository.
See commit b928922727d6691a3bdc28160f93f25712c565f6:
submodule add
: If --branch
is given, record it in .gitmodules
This allows you to easily record a
submodule.<name>.branch
option in.gitmodules
when you add a new submodule. With this patch,
$ git submodule add -b <branch> <repository> [<path>]
$ git config -f .gitmodules submodule.<path>.branch <branch>
reduces to
$ git submodule add -b <branch> <repository> [<path>]
This means that future calls to
$ git submodule update --remote ...
will get updates from the same branch that you used to initialize the submodule, which is usually what you want.
Signed-off-by: W. Trevor King [email protected]
Original answer (February 2012):
A submodule is a single commit referenced by a parent repo.
Since it is a Git repo on its own, the "history of all commits" is accessible through a git log
within that submodule.
So for a parent to track automatically the latest commit of a given branch of a submodule, it would need to:
gitslave (that you already looked at) seems to be the best fit, including for the commit operation.
It is a little annoying to make changes to the submodule due to the requirement to check out onto the correct submodule branch, make the change, commit, and then go into the superproject and commit the commit (or at least record the new location of the submodule).
Other alternatives are detailed here.
Use following codes to read the file
import java.io.File;
import java.util.Scanner;
public class ReadFile {
public static void main(String[] args) {
try {
System.out.print("Enter the file name with extension : ");
Scanner input = new Scanner(System.in);
File file = new File(input.nextLine());
input = new Scanner(file);
while (input.hasNextLine()) {
String line = input.nextLine();
System.out.println(line);
}
input.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
-> This application is printing the file content line by line
I like adding functions to jQuery so this function would help:
jQuery.fn.center = function () {
this.css("position","absolute");
this.css("top", Math.max(0, (($(window).height() - $(this).outerHeight()) / 2) +
$(window).scrollTop()) + "px");
this.css("left", Math.max(0, (($(window).width() - $(this).outerWidth()) / 2) +
$(window).scrollLeft()) + "px");
return this;
}
Now we can just write:
$(element).center();
Demo: Fiddle (with added parameter)
There are only two options:
Find out by reading all rows (and then you might as well store them)
run a specialized SELECT COUNT(*) query beforehand.
Going twice through the DataReader loop is really expensive, you would have to re-execute the query.
And (thanks to Pete OHanlon) the second option is only concurrency-safe when you use a transaction with a Snapshot isolation level.
Since you want to end up storing all rows in memory anyway the only sensible option is to read all rows in a flexible storage (List<>
or DataTable
) and then copy the data to any format you want. The in-memory operation will always be much more efficient.
Jersey 2.26 and newer are not backward compatible with older versions. The reason behind that has been stated in the release notes:
Unfortunately, there was a need to make backwards incompatible changes in 2.26. Concretely jersey-proprietary reactive client API is completely gone and cannot be supported any longer - it conflicts with what was introduced in JAX-RS 2.1 (that's the price for Jersey being "spec playground..").
Another bigger change in Jersey code is attempt to make Jersey core independent of any specific injection framework. As you might now, Jersey 2.x is (was!) pretty tightly dependent on HK2, which sometimes causes issues (esp. when running on other injection containers. Jersey now defines it's own injection facade, which, when implemented properly, replaces all internal Jersey injection.
As for now one should use the following dependencies:
Maven
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>2.26</version>
</dependency>
Gradle
compile 'org.glassfish.jersey.core:jersey-common:2.26'
compile 'org.glassfish.jersey.inject:jersey-hk2:2.26'
We can use this command to run our host project via Windows Powershell without IIS and visual studio on a separate port. Default of krestel web server is 5001
$env:ASPNETCORE_URLS="http://localhost:22742" ; dotnet run
Using vh on mobile devices is not going to work with 100vh, due to their design choices using the entire height of the device not including any address bars etc.
If you are looking for a layout including div heights proportionate to the true view height I use the following pure css solution:
:root {
--devHeight: 86vh; //*This value changes
}
.div{
height: calc(var(--devHeight)*0.10); //change multiplier to suit required height
}
You have two options for setting the viewport height, manually set the --devHeight to a height that works (but you will need to enter this value for each type of device you are coding for)
or
Use javascript to get the window height and then update --devheight on loading and refreshing the viewport (however this does require using javascript and is not a pure css solution)
Once you obtain your correct view height you can create multiple divs at an exact percentage of total viewport height by simply changing the multiplier in each div you assign the height to.
0.10 = 10% of view height 0.57 = 57% of view height
Hope this might help someone ;)
Threading's job is to enable applications to be responsive. Suppose you have a database connection and you need to respond to user input. Without threading, if the database connection is busy the application will not be able to respond to the user. By splitting off the database connection into a separate thread you can make the application more responsive. Also because both threads are in the same process, they can access the same data structures - good performance, plus a flexible software design.
Note that due to the GIL the app isn't actually doing two things at once, but what we've done is put the resource lock on the database into a separate thread so that CPU time can be switched between it and the user interaction. CPU time gets rationed out between the threads.
Multiprocessing is for times when you really do want more than one thing to be done at any given time. Suppose your application needs to connect to 6 databases and perform a complex matrix transformation on each dataset. Putting each job in a separate thread might help a little because when one connection is idle another one could get some CPU time, but the processing would not be done in parallel because the GIL means that you're only ever using the resources of one CPU. By putting each job in a Multiprocessing process, each can run on it's own CPU and run at full efficiency.
I guess something like this would work:
Add System.ServiceProcess
to your project references (It's on the .NET tab).
using System.ServiceProcess;
ServiceController sc = new ServiceController(SERVICENAME);
switch (sc.Status)
{
case ServiceControllerStatus.Running:
return "Running";
case ServiceControllerStatus.Stopped:
return "Stopped";
case ServiceControllerStatus.Paused:
return "Paused";
case ServiceControllerStatus.StopPending:
return "Stopping";
case ServiceControllerStatus.StartPending:
return "Starting";
default:
return "Status Changing";
}
Edit: There is also a method sc.WaitforStatus()
that takes a desired status and a timeout, never used it but it may suit your needs.
Edit: Once you get the status, to get the status again you will need to call sc.Refresh()
first.
Reference: ServiceController object in .NET.
A short summary of each:
Classes Only:
Structs Only:
Both Classes and Structs:
at a guess:
sudo apt-get install mysql-client
You can also achieve other way using button tag
According new html5 attribute you also can add a form attribute like
<form id="formId">
<input type="text" name="fname">
</form>
<button id="myButton" form='#formId'>My Awesome Button</button>
So the button will be attached to the form.
This should work with the validate() plugin of jQuery like :
var validator = $( "#formId" ).validate();
validator.element( "#myButton" );
It's working too with input tag
A lot of people use (click) option so I will share this too.
<button (click)="function1()" (click)="function2()">Button</button>
Use the CREATE SCHEMA syntax or, in SSMS, drill down through Databases -> YourDatabaseName -> Security -> Schemas. Right-click on the Schemas folder and select "New Schema..."
ps -fC PROCESSNAME
ps and grep is a dangerous combination -- grep tries to match everything on each line (thus the all too common: grep -v grep hack). ps -C doesn't use grep, it uses the process table for an exact match. Thus, you'll get an accurate list with: ps -fC sh rather finding every process with sh somewhere on the line.
Almost the same as yours:
You can multiply numpy arrays by scalars and it just works.
>>> import numpy as np
>>> np.array([1, 2, 3]) * 2
array([2, 4, 6])
>>> np.array([[1, 2, 3], [4, 5, 6]]) * 2
array([[ 2, 4, 6],
[ 8, 10, 12]])
This is also a very fast and efficient operation. With your example:
>>> a_1 = np.array([1.0, 2.0, 3.0])
>>> a_2 = np.array([[1., 2.], [3., 4.]])
>>> b = 2.0
>>> a_1 * b
array([2., 4., 6.])
>>> a_2 * b
array([[2., 4.],
[6., 8.]])
I think this is good way to read all the files in a folder and sub folder's
private static void addfiles (File input,ArrayList<File> files)
{
if(input.isDirectory())
{
ArrayList <File> path = new ArrayList<File>(Arrays.asList(input.listFiles()));
for(int i=0 ; i<path.size();++i)
{
if(path.get(i).isDirectory())
{
addfiles(path.get(i),files);
}
if(path.get(i).isFile())
{
files.add(path.get(i));
}
}
}
if(input.isFile())
{
files.add(input);
}
}
I have the same warning (it's make my app cannot build). When I add C function
in Objective-C's .m file
, But forgot to declared it at .h
file.
128 characters. This is the max length of the sysname
datatype (nvarchar(128)
).
I faced the similar problem with intellij IDEA. you can use this
VelocityEngine ve = new VelocityEngine();
Properties props = new Properties();
props.put("file.resource.loader.path", "/Users/Projects/Comparator/src/main/resources/");
ve.init(props);
Template t = ve.getTemplate("helloworld.vm");
VelocityContext context = new VelocityContext();
The way I usually do it, is with the following css:
div#submitForm input {
background: url("../images/buttonbg.png") no-repeat scroll 0 0 transparent;
color: #000000;
cursor: pointer;
font-weight: bold;
height: 20px;
padding-bottom: 2px;
width: 75px;
}
and the markup:
<div id="submitForm">
<input type="submit" value="Submit" name="submit">
</div>
If things look different in the various browsers I implore you to use a reset style sheet which sets all margins, padding and maybe even borders to zero.
@objc
, see below example!#selector(name)
.private
or public
doesn't matter; you can use private.override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let menuButtonImage = UIImage(systemName: "flame")
let menuButton = UIBarButtonItem(image: menuButtonImage, style: .plain, target: self, action: #selector(didTapMenuButton))
navigationItem.rightBarButtonItem = menuButton
}
@objc public func didTapMenuButton() {
print("Hello World")
}
Simple and neet : use vw
units for a responsive height/width according to the viewport width.
vw : 1/100th of the width of the viewport. (Source MDN)
HTML:
<div></div>
CSS for a 1:1 aspect ratio:
div{
width:80vw;
height:80vw; /* same as width */
}
Table to calculate height according to the desired aspect ratio and width of element.
aspect ratio | multiply width by
-----------------------------------
1:1 | 1
1:3 | 3
4:3 | 0.75
16:9 | 0.5625
This technique allows you to :
position:absolute;
These units are supported by IE9+ see canIuse for more info
A crude way to do it -
var sel = document.getElementById('select_id');
sel.addEventListener('click', function(el){
var options = this.children;
for(var i=0; i < this.childElementCount; i++){
options[i].style.color = 'white';
}
var selected = this.children[this.selectedIndex];
selected.style.color = 'red';
}, false);
SELECT DATEDIFF(hh, firstDate, secondDate) FROM tableName WHERE ...
To generate graph in png format you need to Install following dependent packages
sudo apt-get install libpng-dev
sudo apt-get install libfreetype6-dev
Ubuntu https://apps.ubuntu.com/cat/applications/libpng12-0/ or using following command
sudo apt-get install libpng12-0
Even more useful, if you have multiple parameters you can access any/all of them with:
_mock.Setup(x => x.DoSomething(It.IsAny<string>(),It.IsAny<string>(),It.IsAny<string>())
.Returns((string a, string b, string c) => string.Concat(a,b,c));
You always need to reference all the arguments, to match the method's signature, even if you're only going to use one of them.
var date = new Date((1578316263249));//data[k].timestamp_x000D_
console.log(date);
_x000D_
Check the contents of SpringExample/target/classes. Is spring-config.xml there? If not, try manually removing the SpringExample/target/ directory, and force a rebuild with Project=>Clean... in Eclipse.
As pointed in the comments, file
is a blob
:
file instanceof Blob; // true
And you can get its content with the file reader API https://developer.mozilla.org/en/docs/Web/API/FileReader
Read more: https://developer.mozilla.org/en-US/docs/Using_files_from_web_applications
var input = document.querySelector('input[type=file]');
var textarea = document.querySelector('textarea');
function readFile(event) {
textarea.textContent = event.target.result;
console.log(event.target.result);
}
function changeFile() {
var file = input.files[0];
var reader = new FileReader();
reader.addEventListener('load', readFile);
reader.readAsText(file);
}
input.addEventListener('change', changeFile);
_x000D_
<input type="file">
<textarea rows="10" cols="50"></textarea>
_x000D_
add 0.5 before casting (if x > 0) or subtract 0.5 (if x < 0), because the compiler will always truncate.
float x = 55; // stored as 54.999999...
x = x + 0.5 - (x<0); // x is now 55.499999...
int y = (int)x; // truncated to 55
C++11 also introduces std::round, which likely uses a similar logic of adding 0.5 to |x| under the hood (see the link if interested) but is obviously more robust.
A follow up question might be why the float isn't stored as exactly 55. For an explanation, see this stackoverflow answer.
Stream.of().mapToInt().toArray()
seems to be the best options.
int[] arr = Stream.of(new String[]{"1", "2", "3"})
.mapToInt(Integer::parseInt).toArray();
System.out.println(Arrays.toString(arr));
The next()
moves the cursor froward one row from its current position in the resultset
. so its evident that if(rs.next())
means that if the next row is not null
(means if it exist), Go Ahead.
Now w.r.t your problem,
ResultSet rs = stmt.executeQuery(sql); //This is wrong
^
note that executeQuery(String) is used in case you use a sql-query as string.
Whereas when you use a PreparedStatement, use executeQuery() which executes the SQL query in this PreparedStatement
object and returns the ResultSet
object generated by the query.
Solution :
Use : ResultSet rs = stmt.executeQuery();
For me in IntelliJ it was showing me a popup to import the existing project as gradle project. I just clicked ok on it and then the folder structure appeared properly.
You can use a CASE
statement:
SELECT count(id),
SUM(hour) as totHour,
SUM(case when kind = 1 then 1 else 0 end) as countKindOne
You can get the content of a MultipartFile
by using the getBytes
method and you can write to the file using Files.newOutputStream()
:
public void write(MultipartFile file, Path dir) {
Path filepath = Paths.get(dir.toString(), file.getOriginalFilename());
try (OutputStream os = Files.newOutputStream(filepath)) {
os.write(file.getBytes());
}
}
You can also use the transferTo method:
public void multipartFileToFile(
MultipartFile multipart,
Path dir
) throws IOException {
Path filepath = Paths.get(dir.toString(), multipart.getOriginalFilename());
multipart.transferTo(filepath);
}
Had similar error with the same result with Gradle and was able to solve it by following:
//compile 'org.slf4j:slf4j-api:1.7.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-slf4j-impl', version: '2.1'
Out-commented line is the one which caused the error output. I believe you can transfer this to Maven.
One way of doing this without changing Volley
's source code is to check for the response data in the VolleyError
and parse it your self.
As of f605da3 commit
, Volley
throws a ServerError
exception that contains the raw network response.
So you can do something similar to this in your error listener:
/* import com.android.volley.toolbox.HttpHeaderParser; */
public void onErrorResponse(VolleyError error) {
// As of f605da3 the following should work
NetworkResponse response = error.networkResponse;
if (error instanceof ServerError && response != null) {
try {
String res = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, "utf-8"));
// Now you can use any deserializer to make sense of data
JSONObject obj = new JSONObject(res);
} catch (UnsupportedEncodingException e1) {
// Couldn't properly decode data to string
e1.printStackTrace();
} catch (JSONException e2) {
// returned data is not JSONObject?
e2.printStackTrace();
}
}
}
For future, if Volley
changes, one can follow the above approach where you need to check the VolleyError
for raw data that has been sent by the server and parse it.
I hope that they implement that TODO
mentioned in the source file.
You can specify the type of a variable before it to force its type. It's called (dynamic) casting (more information is here):
$string = "1654"
$integer = [int]$string
$string + 1
# Outputs 16541
$integer + 1
# Outputs 1655
As an example, the following snippet adds, to each object in $fileList
, an IntVal
property with the integer value of the Name
property, then sorts $fileList
on this new property (the default is ascending), takes the last (highest IntVal
) object's IntVal
value, increments it and finally creates a folder named after it:
# For testing purposes
#$fileList = @([PSCustomObject]@{ Name = "11" }, [PSCustomObject]@{ Name = "2" }, [PSCustomObject]@{ Name = "1" })
# OR
#$fileList = New-Object -TypeName System.Collections.ArrayList
#$fileList.AddRange(@([PSCustomObject]@{ Name = "11" }, [PSCustomObject]@{ Name = "2" }, [PSCustomObject]@{ Name = "1" })) | Out-Null
$highest = $fileList |
Select-Object *, @{ n = "IntVal"; e = { [int]($_.Name) } } |
Sort-Object IntVal |
Select-Object -Last 1
$newName = $highest.IntVal + 1
New-Item $newName -ItemType Directory
Sort-Object IntVal
is not needed so you can remove it if you prefer.
[int]::MaxValue = 2147483647
so you need to use the [long]
type beyond this value ([long]::MaxValue = 9223372036854775807
).
CMake 3.13 on Ubuntu 16.04
This approach is more flexible because it doesn't constraint MY_VARIABLE to a type:
$ cat CMakeLists.txt
message("MY_VARIABLE=${MY_VARIABLE}")
if( MY_VARIABLE )
message("MY_VARIABLE evaluates to True")
endif()
$ mkdir build && cd build
$ cmake ..
MY_VARIABLE=
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/build
$ cmake .. -DMY_VARIABLE=True
MY_VARIABLE=True
MY_VARIABLE evaluates to True
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/build
$ cmake .. -DMY_VARIABLE=False
MY_VARIABLE=False
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/build
$ cmake .. -DMY_VARIABLE=1
MY_VARIABLE=1
MY_VARIABLE evaluates to True
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/build
$ cmake .. -DMY_VARIABLE=0
MY_VARIABLE=0
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/build
From the MDN documentation:
[The margin property] applies to all elements except elements with table display types other than table-caption, table and inline-table
In other words, the margin
property is not applicable to display:table-cell
elements.
Consider using the border-spacing
property instead.
Note it should be applied to a parent element with a display:table
layout and border-collapse:separate
.
For example:
HTML
<div class="table">
<div class="row">
<div class="cell">123</div>
<div class="cell">456</div>
<div class="cell">879</div>
</div>
</div>
CSS
.table {display:table;border-collapse:separate;border-spacing:5px;}
.row {display:table-row;}
.cell {display:table-cell;padding:5px;border:1px solid black;}
Different margin horizontally and vertically
As mentioned by Diego Quirós, the border-spacing
property also accepts two values to set a different margin for the horizontal and vertical axes.
For example
.table {/*...*/border-spacing:3px 5px;} /* 3px horizontally, 5px vertically */
In your settings.py
add a root staticfiles directory:
STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static')
]
Create /static/images/favicon.ico
Add the favicon to your template(base.html):
{% load static %}
<link rel="shortcut icon" type="image/png" href="{% static 'images/favicon.ico' %}"/>
And create a url redirect in urls.py
because browsers look for a favicon in /favicon.ico
from django.contrib.staticfiles.storage import staticfiles_storage
from django.views.generic.base import RedirectView
urlpatterns = [
...
path('favicon.ico', RedirectView.as_view(url=staticfiles_storage.url('images/favicon.ico')))
]
In Gradle build file, add dependency:
implementation 'com.android.support:multidex:1.0.2'
or
implementation 'com.android.support:multidex:1.0.3'
or
implementation 'com.android.support:multidex:2.0.0'
And then in the "defaultConfig" section, add:
multiDexEnabled true
Under targetSdkVersion
minSdkVersion 17
targetSdkVersion 27
multiDexEnabled true
Now if you encounter this error
Error:Failed to resolve: multidex-instrumentation Open File
You need to change your gradle to 3.0.1
classpath 'com.android.tools.build:gradle:3.0.1'
And put the following code in the file gradle-wrapper.properties
distributionUrl=https://services.gradle.org/distributions/gradle-4.1-all.zip
Finally
add class Applition in project And introduce it to the AndroidManifest Which is extends from MultiDexApplication
public class App extends MultiDexApplication {
@Override
public void onCreate( ) {
super.onCreate( );
}
}
Run the project first to create an error, then clean the project
Finally, Re-launch the project and enjoy it
The accepted answer works quite well. An alternative method that I have used is to create a FormClosing method for the main Form. This is very similar to the override. My example is for an application that minimizes to the system tray when clicking the close button on the Form.
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason == CloseReason.ApplicationExitCall)
{
return;
}
else
{
e.Cancel = true;
WindowState = FormWindowState.Minimized;
}
}
This will allow ALT+F4 or anything in the Application calling Application.Exit(); to act as normal while clicking the (X) will minimize the Application.
So I merged some of the above solutions into my own, which for me made more sense, became more intuitive and a bit less error prone. I use a public stp::map
to keep track of the possible config ids, and a struct
to keep track of the possible values. Her it goes:
struct{
std::string PlaybackAssisted = "assisted";
std::string Playback = "playback";
std::string Recording = "record";
std::string Normal = "normal";
} mode_def;
std::map<std::string, std::string> settings = {
{"mode", mode_def.Normal},
{"output_log_path", "/home/root/output_data.log"},
{"input_log_path", "/home/root/input_data.log"},
};
void read_config(const std::string & settings_path){
std::ifstream settings_file(settings_path);
std::string line;
if (settings_file.fail()){
LOG_WARN("Config file does not exist. Default options set to:");
for (auto it = settings.begin(); it != settings.end(); it++){
LOG_INFO("%s=%s", it->first.c_str(), it->second.c_str());
}
}
while (std::getline(settings_file, line)){
std::istringstream iss(line);
std::string id, eq, val;
if (std::getline(iss, id, '=')){
if (std::getline(iss, val)){
if (settings.find(id) != settings.end()){
if (val.empty()){
LOG_INFO("Config \"%s\" is empty. Keeping default \"%s\"", id.c_str(), settings[id].c_str());
}
else{
settings[id] = val;
LOG_INFO("Config \"%s\" read as \"%s\"", id.c_str(), settings[id].c_str());
}
}
else{ //Not present in map
LOG_ERROR("Setting \"%s\" not defined, ignoring it", id.c_str());
continue;
}
}
else{
// Comment line, skiping it
continue;
}
}
else{
//Empty line, skipping it
continue;
}
}
}
In 1.0, the functionality was bound to (
and tab
and shift-tab
, in 2.0 tab
was deprecated but still functional in some unambiguous cases completing or inspecting were competing in many cases. Recommendation was to always use shift-Tab
. (
was also added as deprecated as confusing in Haskell-like syntax to also push people toward Shift-Tab as it works in more cases. in 3.0 the deprecated bindings have been remove in favor of the official, present for 18+ month now Shift-Tab
.
So press Shift-Tab
.
Press i
or a
to get into insert mode, and type the message of choice
Press ESC
several times to get out of insert mode, or any other mode you might have run into by accident
to save, :wq
, :x
or ZZ
to exit without saving, :q!
or ZQ
To reload a file and undo all changes you have made...:
Press several times ESC
and then enter :e!
.
The above bind-redirect did not work for me so I commented out the reference to System.Net.Http
in web.config
. Everything seems to work OK without it.
<system.web>
<compilation debug="true" targetFramework="4.7.2">
<assemblies>
<!--<add assembly="System.Net.Http, Version=4.2.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />-->
<add assembly="System.ComponentModel.Composition, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
</assemblies>
</compilation>
<customErrors mode="Off" />
<httpRuntime targetFramework="4.7.2" />
</system.web>
I found out that in my version of git bash "2.24.0.windows.2" in my "home" folder under windows users, there will be a file called ".bash-history" with no file extension in that folder. It's only created after you exit from bash.
Here's my workflow:
If you really want points I guess you could make a batch file to do all this but this is good enough for me. Hope it helps someone.
The problem is in the line before the one that throws the warning. When you create df_2 that's where you're creating a copy of a slice of a dataframe. Instead, when you create df_2, use .copy() and you won't get that warning later on.
df_2 = df[df['B'] == 'b.2'].copy()
If you use ng-model, you don't want to also use ng-checked. Instead just initialize the model variable to true. Normally you would do this in a controller that is managing your page (add one). In your fiddle I just did the initialization in an ng-init attribute for demonstration purposes.
<div ng-app="">
Send to Office: <input type="checkbox" ng-model="checked" ng-init="checked=true"><br/>
<select id="transferTo" ng-disabled="checked">
<option>Tech1</option>
<option>Tech2</option>
</select>
</div>
user1 = pd.read_csv('dataset/1.csv', names=['Time', 'X', 'Y', 'Z'])
names parameter in read_csv function is used to define column names. If you pass extra name in this list, it will add another new column with that name with NaN values.
header=None is used to trim column names is already exists in CSV file.
Optimization for emplace_back
can be demonstrated in next example.
For emplace_back
constructor A (int x_arg)
will be called. And for
push_back
A (int x_arg)
is called first and move A (A &&rhs)
is called afterwards.
Of course, the constructor has to be marked as explicit
, but for current example is good to remove explicitness.
#include <iostream>
#include <vector>
class A
{
public:
A (int x_arg) : x (x_arg) { std::cout << "A (x_arg)\n"; }
A () { x = 0; std::cout << "A ()\n"; }
A (const A &rhs) noexcept { x = rhs.x; std::cout << "A (A &)\n"; }
A (A &&rhs) noexcept { x = rhs.x; std::cout << "A (A &&)\n"; }
private:
int x;
};
int main ()
{
{
std::vector<A> a;
std::cout << "call emplace_back:\n";
a.emplace_back (0);
}
{
std::vector<A> a;
std::cout << "call push_back:\n";
a.push_back (1);
}
return 0;
}
output:
call emplace_back:
A (x_arg)
call push_back:
A (x_arg)
A (A &&)
Try Collections.shuffle(list).If usage of this method is barred for solving the problem, then one can look at the actual implementation.
As @Falanwe points out in a comment, doing something like this is incorrect:
int LastCount = mydict.Keys.ElementAt(mydict.Count -1);
You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well.
Basically, you should include the class' header file in the code where you want to use the class in the shared library. Then, when you link, use the '-l' flag to link your code with the shared library. Of course, this requires the .so to be where the OS can find it. See 3.5. Installing and Using a Shared Library
Using dlsym is for when you don't know at compile time which library you want to use. That doesn't sound like it's the case here. Maybe the confusion is that Windows calls the dynamically loaded libraries whether you do the linking at compile or run-time (with analogous methods)? If so, then you can think of dlsym as the equivalent of LoadLibrary.
If you really do need to dynamically load the libraries (i.e., they're plug-ins), then this FAQ should help.
This works with multiple statements:
if condition1 Then stmt1:stmt2 Else if condition2 Then stmt3:stmt4 Else stmt5:stmt6
Or you can split it over multiple lines:
if condition1 Then stmt1:stmt2
Else if condition2 Then stmt3:stmt4
Else stmt5:stmt6
import numpy as np
import threading
def threaded_process(items_chunk):
""" Your main process which runs in thread for each chunk"""
for item in items_chunk:
try:
api.my_operation(item)
except Exception:
print('error with item')
n_threads = 20
# Splitting the items into chunks equal to number of threads
array_chunk = np.array_split(input_image_list, n_threads)
thread_list = []
for thr in range(n_threads):
thread = threading.Thread(target=threaded_process, args=(array_chunk[thr]),)
thread_list.append(thread)
thread_list[thr].start()
for thread in thread_list:
thread.join()
WITH CTE_SUM AS (
SELECT ProductID, Sum(OrderQuantity) AS TotalOrderQuantity
FROM OrderDetails GROUP BY ProductID
)
SELECT DISTINCT OrderDetails.ProductID, OrderDetails.ProductName, OrderDetails.OrderQuantity,CTE_SUM.TotalOrderQuantity
FROM
OrderDetails INNER JOIN CTE_SUM
ON OrderDetails.ProductID = CTE_SUM.ProductID
Please check if this works.
In case of windows, one of the options you have is to uninstall current version of Node. Then, go to the node website and download the desired version and install this last one instead.
From the fine manual:
ALTER TABLE mytable ALTER COLUMN mycolumn DROP NOT NULL;
There's no need to specify the type when you're just changing the nullability.
Like Daniel said you can run python commands directly from Matlab using the py. command. To run any of the libraries you just have to make sure Malab is running the python environment where you installed the libraries:
On a Mac:
Open a new terminal window;
type: which python (to find out where the default version of python is installed);
Restart Matlab;
For example:
py.sys.version;
py.sklearn.cluster.dbscan
void CMRSMATH1Dlg::Loadit(TCHAR *destination, CDC &memdc)
{
CImage img;
PBITMAPINFO bmi;
BITMAPINFOHEADER Info;
BITMAPFILEHEADER bFileHeader;
CBitmap bm;
CFile file2;
file2.Open(destination, CFile::modeRead | CFile::typeBinary);
file2.Read(&bFileHeader, sizeof(BITMAPFILEHEADER));
file2.Read(&Info, sizeof(BITMAPINFOHEADER));
BYTE ch;
int width = Info.biWidth;
int height = Info.biHeight;
if (height < 0)height = -height;
int size1 = width*height * 3;
int size2 = ((width * 24 + 31) / 32) * 4 * height;
int widthnew = (size2 - size1) / height;
BYTE * buffer = (BYTE *)GlobalAlloc(GPTR, size2);
//////////////////////////
HGDIOBJ old;
unsigned char alpha = 0;
int z = 0;
z = 0;
int gap = (size2 - size1) / height;
for (int y = 0;y < height;y++)
{
for (int x = 0;x < width*3;x++)
{
file2.Read(&ch, 1);
buffer[z] = ch;
z++;
}
for (int z1 = 0;z1 <gap;z1++)
{
file2.Read(&ch,1);
}
}
bm.CreateCompatibleBitmap(&memdc, width, height);
bm.SetBitmapBits(size1,buffer);
old = memdc.SelectObject(&bm);
///////////////////////////
//bm.SetBitmapBits(size1, buffer);
GetDC()->BitBlt(1, 95, width, height, &memdc, 0, 0, SRCCOPY);
memdc.SelectObject(&old);
bm.DeleteObject();
GlobalFree(buffer);
file2.Close();
}
void CMRSMATH1Dlg::saveit(CBitmap &bit1, CDC &memdc, TCHAR *destination)
{
BITMAP bm;
PBITMAPINFO bmi;
BITMAPINFOHEADER Info;
BITMAPFILEHEADER bFileHeader;
CFile file1;
CSize size = bit1.GetBitmap(&bm);
int z = 0;
BYTE ch = 0;
size.cx = bm.bmWidth;
size.cy = bm.bmHeight;
int width = size.cx;
int size1 = (size.cx)*(size.cy);
int size2 = size1 * 3;
size1 = ((size.cx * 24 + 31) / 32) *4* size.cy;
BYTE * buffer = (BYTE *)GlobalAlloc(GPTR, size2);
bFileHeader.bfType = 'B' + ('M' << 8);
bFileHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);
bFileHeader.bfSize = bFileHeader.bfOffBits + size1;
bFileHeader.bfReserved1 = 0;
bFileHeader.bfReserved2 = 0;
Info.biSize = sizeof(BITMAPINFOHEADER);
Info.biPlanes = 1;
Info.biBitCount = 24;//bm.bmBitsPixel;//bitsperpixel///////////////////32
Info.biCompression = BI_RGB;
Info.biWidth =bm.bmWidth;
Info.biHeight =-bm.bmHeight;///reverse pic if negative height
Info.biSizeImage =size1;
Info.biClrImportant = 0;
if (bm.bmBitsPixel <= 8)
{
Info.biClrUsed = 1 << bm.bmBitsPixel;
}else
Info.biClrUsed = 0;
Info.biXPelsPerMeter = 0;
Info.biYPelsPerMeter = 0;
bit1.GetBitmapBits(size2, buffer);
file1.Open(destination, CFile::modeCreate | CFile::modeWrite |CFile::typeBinary,0);
file1.Write(&bFileHeader, sizeof(BITMAPFILEHEADER));
file1.Write(&Info, sizeof(BITMAPINFOHEADER));
unsigned char alpha = 0;
for (int y = 0;y<size.cy;y++)
{
for (int x = 0;x<size.cx;x++)
{
//for reverse picture below
//z = (((size.cy - 1 - y)*size.cx) + (x)) * 3;
z = (((y)*size.cx) + (x)) * 3;
file1.Write(&buffer[z], 1);
file1.Write(&buffer[z + 1], 1);
file1.Write(&buffer[z + 2], 1);
}
for (int z = 0;z < (size1 - size2) / size.cy;z++)
{
file1.Write(&alpha, 1);
}
}
GlobalFree(buffer);
file1.Close();
file1.m_hFile = NULL;
}
Create a button_border.xml
file in your drawable folder.
res/drawable/button_border.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="#FFDA8200" />
<stroke
android:width="3dp"
android:color="#FFFF4917" />
</shape>
And add button to your XML activity layout and set background android:background="@drawable/button_border"
.
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/button_border"
android:text="Button Border" />
If you just want to change it once, you can specify the 'from' header in command line, eg:
mutt -e 'my_hdr From:[email protected]'
my_hdr
is mutt's command of providing custom header value.
One last word, don't be evil!
There are some differences between Function overloading & overriding though both contains the same function name.In overloading ,between the same name functions contain different type of argument or return type;Such as: "function add (int a,int b)" & "function add(float a,float b); Here the add() function is overloaded. In the case of overriding both the argument and function name are same.It generally found in inheritance or in traits.We have to follow some tactics to introduce, what function will execute now. So In overriding the programmer follows some tactics to execute the desired function where in the overloading the program can automatically identify the desired function...Thanks!
json_decode()
will return an object or array if second value it's true:
$json = '{"countryId":"84","productId":"1","status":"0","opId":"134"}';
$json = json_decode($json, true);
echo $json['countryId'];
echo $json['productId'];
echo $json['status'];
echo $json['opId'];
You don't need HttpServletResponse to set a header on the response. You can do it using javax.ws.rs.core.Response. Just make your method to return Response instead of entity:
return Response.ok(entity).header("Content-Disposition", "attachment; filename=\"" + fileName + "\"").build()
If you still want to use HttpServletResponse you can get it either injected to one of the class fields, or using property, or to method parameter:
@Path("/resource")
class MyResource {
// one way to get HttpServletResponse
@Context
private HttpServletResponse anotherServletResponse;
// another way
Response myMethod(@Context HttpServletResponse servletResponse) {
// ... code
}
}
Try this, replacing .myClassName
with the actual name of the class (but keep the period at the beginning).
$('.myClassName').each(function() {
alert( this.id );
});
So if the class is "test", you'd do $('.test').each(func...
.
This is the specific form of .each()
that iterates over a jQuery object.
The form you were using iterates over any type of collection. So you were essentially iterating over an array of characters t,e,s,t
.
Using that form of $.each()
, you would need to do it like this:
$.each($('.myClassName'), function() {
alert( this.id );
});
...which will have the same result as the example above.
It's limited in that you can't put statements in there. You can only put values(or things that return/evaluate to values), to return
This works ('a' is a static int within class Blah)
Blah.a=Blah.a<5?1:8;
(round brackets are impicitly between the equals and the question mark).
This doesn't work.
Blah.a = Blah.a < 4 ? Console.WriteLine("asdf") : Console.WriteLine("34er");
or
Blah.a = Blah.a < 4 ? MessageBox.Show("asdf") : MessageBox.Show("34er");
So you can only use the c# ternary operator for returning values. So it's not quite like a shortened form of an if. Javascript and perhaps some other languages let you put statements in there.
It imports once when the function executes first time.
Pros:
Cons:
Although quite old, nevertheless a quick response:
Spring provides UriUtils - with this you can specify how to encoded and which part is it related from an URI, e.g.
encodePathSegment
encodePort
encodeFragment
encodeUriVariables
....
I use them cause we already using Spring, i.e. no additonal library is required!
One way is by using document.getElementByID
, as below -
<body>
<h1>Adding 'a' and 'b'</h1>
a: <input type="number" name="a" id="a"><br> b: <input type="number" name="b" id="b"><br>
<button onclick="add(document.getElementById('a').value,document.getElementById('b').value)">Add</button>
<script>
function add(a, b) {
var sum = parseInt(a, 10) + parseInt(b, 10);
alert(sum);
}
</script>
</body>
_x000D_
No, you cannot.
From SQL Server Books Online:
User-defined functions cannot be used to perform actions that modify the database state.
Ref.
from Xlib import X, display
d = display.Display()
s = d.screen()
root = s.root
root.warp_pointer(300,300)
d.sync()
well i might be late on this but i would like to share something:
Given the input: System.out.println(isGreaterThanZero(-1));
public static boolean isGreaterThanZero(Integer value) {
return value == null?false:value.compareTo(0) > 0;
}
Returns false
public static boolean isGreaterThanZero(Integer value) {
return value == null?false:value.intValue() > 0;
}
Returns true So i think in yourcase 'compareTo' will be more accurate.
Another solution:
select * from traintable
where (train, time) in (select train, max(time) from traintable group by train);
Recently, I have seen this problem too. Below, you have my solution:
Or it can be a genuine network issue. Restart your network-manager using sudo service network-manager restart
or fix it up
I have just received this error after switching from HTTPS to SSH (for my origin remote). To fix, I simply ran the following command (for each repo):
ssh -T [email protected]
Upon receiving a successful response, I could fetch/push to the repo with ssh.
I took that command from Git's Testing your SSH connection guide, which is part of the greater Connecting to GitHub with with SSH guide.
It turns out that, yes, the problem is not simple, but the solution is.
First I had to create a shell script to wrap the "source" command. That said I used the "." instead, because I've read that it's better to use it than source for Bash scripts.
#!/bin/bash
. /path/to/env/bin/activate
Then from my Python script I can simply do this:
import os
os.system('/bin/bash --rcfile /path/to/myscript.sh')
The whole trick lies within the --rcfile
argument.
When the Python interpreter exits it leaves the current shell in the activated environment.
Win!
I had to use the install
function instead:
conda install pandas=0.13.1
If you want a method other than findcontrol try the following:
GridViewRow row = Gridview1.SelectedRow;
int CustomerId = int.parse(row.Cells[0].Text);// to get the column value
CheckBox checkbox1= row.Cells[0].Controls[0] as CheckBox; // you can access the controls like this
just in case someone is getting NullPointerException
, you need to get the context inside onCreate().
Service
is a Context
, so do this:
@Override
public void onCreate() {
super.onCreate();
context = this;
}
In the terms of POS (Part of Speech) Tag,
Running ionic info
on your project directory give all the info you need the npm version, cli, app script and some more
${#str_var}
where str_var
is your string.
If you are aware of Jackson 2, there is a great tutorial at mkyong.com on how to convert Java Objects to JSON and vice versa. The following code snippets have been taken from that tutorial.
Convert Java object to JSON, writeValue(...)
:
ObjectMapper mapper = new ObjectMapper();
Staff obj = new Staff();
//Object to JSON in file
mapper.writeValue(new File("c:\\file.json"), obj);
//Object to JSON in String
String jsonInString = mapper.writeValueAsString(obj);
Convert JSON to Java object, readValue(...)
:
ObjectMapper mapper = new ObjectMapper();
String jsonInString = "{'name' : 'mkyong'}";
//JSON from file to Object
Staff obj = mapper.readValue(new File("c:\\file.json"), Staff.class);
//JSON from URL to Object
Staff obj = mapper.readValue(new URL("http://mkyong.com/api/staff.json"), Staff.class);
//JSON from String to Object
Staff obj = mapper.readValue(jsonInString, Staff.class);
Jackson 2 Dependency:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.6.3</version>
</dependency>
For the full tutorial, please go to the link given above.
This is for Phonegap 3.0.x to 3.3.x. For PhoneGap 3.4.0 and higher see below.
Found part of the answer here, at Phonegap documentation. The full process is the following:
Open a command line window, and go to /path/to/your/project/platforms/android/cordova.
Run build --release
. This creates an unsigned release APK at /path/to/your/project/platforms/android/bin folder, called YourAppName-release-unsigned.apk.
Sign and align the APK using the instructions at android developer official docs.
Thanks to @LaurieClark for the link (http://iphonedevlog.wordpress.com/2013/08/16/using-phonegap-3-0-cli-on-mac-osx-10-to-build-ios-and-android-projects/), and the blogger who post it, because it put me on the track.
Well you can use below command to export,
mysqldump --databases --user=root --password your_db_name > export_into_db.sql
and the generated file will be available in the same directory where you had ran this command.
Now login to mysql using command,
mysql -u[username] -p
then use "source" command with the file path.
setText(Html.fromHtml(bodyData)) is deprecated after api 24. Now you have to do this:
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
tvDocument.setText(Html.fromHtml(bodyData,Html.FROM_HTML_MODE_LEGACY));
} else {
tvDocument.setText(Html.fromHtml(bodyData));
}
You can use strlen. Size is determined by the terminating null-character, so passed string should be valid.
If you want to get size of memory buffer, that contains your string, and you have pointer to it:
sizeof
to get its size.If you are confused about difference between dynamic and static arrays, check this.