Try adding the below code to the class that you want to use
[Serializable()]
public partial class Class
{
I have the same problem. I usually resort to String#split
:
"ABCDEFG".split("").each do |i|
puts i
end
I guess you could also implement it yourself like this:
class String
def each_char
self.split("").each { |i| yield i }
end
end
Edit: yet another alternative is String#each_byte
, available in Ruby 1.8.6, which returns the ASCII value of each char in an ASCII string:
"ABCDEFG".each_byte do |i|
puts i.chr # Fixnum#chr converts any number to the ASCII char it represents
end
Strings can have for loops to:
for a in string:
print a
The best approach if you want to ALWAYS show two decimal places (even if your number only has one decimal place) is to use
yournumber.ToString("0.00");
.has()
seems to be designed for this purpose. Since it returns a jQuery object, you have to test for .length
as well:
if ($('div#hello').has(target).length) {
alert('Target is a child of #hello');
}
As mentioned in the other answers, previous versions of openssl used a weak key derivation function to derive an AES encryption key from the password. However, openssl v1.1.1 supports a stronger key derivation function, where the key is derived from the password using pbkdf2
with a randomly generated salt, and multiple iterations of sha256 hashing (10,000 by default).
To encrypt a file:
openssl aes-256-cbc -e -salt -pbkdf2 -iter 10000 -in plaintextfilename -out encryptedfilename
To decrypt a file:
openssl aes-256-cbc -d -salt -pbkdf2 -iter 10000 -in encryptedfilename -out plaintextfilename
Just creating a Powershell array will do the trick
$recipients = @("Marcel <[email protected]>", "Marcelt <[email protected]>")
The same approach can be used for attachments
$attachments = @("$PSScriptRoot\image003.png", "$PSScriptRoot\image004.jpg")
Services are singletons, and it is not logical for a scope to be injected in service (which is case indeed, you cannot inject scope in service). You can pass scope as a parameter, but that is also a bad design choice, because you would have scope being edited in multiple places, making it hard for debugging. Code for dealing with scope variables should go in controller, and service calls go to the service.
The exclamation point means many things, and sometimes you can't tell a lot from it other than "this is dangerous, be careful".
As others have said, in standard methods it's often used to indicate a method that causes an object to mutate itself, but not always. Note that many standard methods change their receiver and don't have an exclamation point (pop
, shift
, clear
), and some methods with exclamation points don't change their receiver (exit!
). See this article for example.
Other libraries may use it differently. In Rails an exclamation point often means that the method will throw an exception on failure rather than failing silently.
It's a naming convention but many people use it in subtly different ways. In your own code a good rule of thumbs is to use it whenever a method is doing something "dangerous", especially when two methods with the same name exist and one of them is more "dangerous" than the other. "Dangerous" can mean nearly anything though.
Sub-pixel rendering is tricky. You can't actually expect a monitor to render a less than a pixel thin line. But it's possible to provide sub-pixel dimensions. Depending on the browser they render these differently. Check this John Resig's blog post about it.
Basically if your monitor is an LCD and you're drawing vertical lines, you can easily draw a 1/3 pixel line. If your background is white, give your line colour of #f0f
. To the eye this line will be 1/3 of pixel wide. Although it will be of some colour, if you'd magnify monitor, you'd see that only one segment of the whole pixel (consisting of RGB) will be dark. This is pretty much technique that's used for fine type hinting i.e. ClearType.
But horizontal lines can only be a full pixel high. That's technology limitation of LCD monitors. CRTs were even more complicated with their triangular phosphors (unless they were aperture grille type ie. Sony Trinitron) but that's a different story.
Basically providing a sub-pixel dimension and expecting it to render that way is same as expecting an integer variable to store a number of 1.2034759349. If you understand this is impossible, you should understand that monitors aren't able to render sub-pixel dimensions.
But the way horizontal rules that blend in are usually done using colours. So if your background is for instance white (#fff
) you can always make your HR
very light. Like #eee
.
The cross browser safe style for very light horizontal rule would be:
hr
{
background-color: #eee;
border: 0 none;
color: #eee;
height: 1px;
}
And use a CSS file instead of in-line styles. They provide a central definition for the whole site not just a particular element. It makes maintainability much better.
If you are using reactive forms and want to disable some input associated with a form control, you should place this disabled
logic into you code and call yourFormControl.disable()
or yourFormControl.enable()
class Program
{
static void Main(string[] args)
{
String unicodeString =
"This Unicode string contains two characters " +
"with codes outside the traditional ASCII code range, " +
"Pi (\u03a0) and Sigma (\u03a3).";
Console.WriteLine("Original string:");
Console.WriteLine(unicodeString);
UnicodeEncoding unicodeEncoding = new UnicodeEncoding();
byte[] utf16Bytes = unicodeEncoding.GetBytes(unicodeString);
char[] chars = unicodeEncoding.GetChars(utf16Bytes, 2, utf16Bytes.Length - 2);
string s = new string(chars);
Console.WriteLine();
Console.WriteLine("Char Array:");
foreach (char c in chars) Console.Write(c);
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("String from Char Array:");
Console.WriteLine(s);
Console.ReadKey();
}
}
Last column in your input file must have some data in it (be it space or char, but not null). I guess, 1st record contains null after last ',' which sqlldr won't recognize unless specifically asked to recognize nulls using TRAILING NULLCOLS option. Alternatively, if you don't want to use TRAILING NULLCOLS, you will have to take care of those NULLs before you pass the file to sqlldr. Hope this helps
I don't know if it is up to date for Excel 2007, but for earlier versions I use the JExcelAPI
String url_open ="http://javadl.sun.com/webapps/download/AutoDL?BundleId=76860";
java.awt.Desktop.getDesktop().browse(java.net.URI.create(url_open));
Try the Random.nextBytes
method:
byte[] b = new byte[20];
new Random().nextBytes(b);
another example following @jake stayman:
{% for key, item in row.divs %}
{% if (key not in [1,2,9]) %} // eliminate element 1,2,9
<li>{{ item }}</li>
{% endif %}
{% endfor %}
You should use the csv
module to read the tab-separated value file. Do not read it into memory in one go. Each row you read has all the information you need to write rows to the output CSV file, after all. Keep the output file open throughout.
import csv
with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
tsvin = csv.reader(tsvin, delimiter='\t')
csvout = csv.writer(csvout)
for row in tsvin:
count = int(row[4])
if count > 0:
csvout.writerows([row[2:4] for _ in range(count)])
or, using the itertools
module to do the repeating with itertools.repeat()
:
from itertools import repeat
import csv
with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
tsvin = csv.reader(tsvin, delimiter='\t')
csvout = csv.writer(csvout)
for row in tsvin:
count = int(row[4])
if count > 0:
csvout.writerows(repeat(row[2:4], count))
#!/bin/bash
req=$(curl -s -X GET http://host:8080/some/resource -H "Accept: application/json") 2>&1
echo "${req}"
Try > workdirectory/filename.txt
This would:
You can consider it equivalent to:
rm -f workdirectory/filename.txt; touch workdirectory/filename.txt
long start = System.currentTimeMillis();
long end = start + 60*1000; // 60 seconds * 1000 ms/sec
while (System.currentTimeMillis() < end)
{
// run
}
Check out this Article, it shows how to mimic SQL ROW_NUMBER() with a partition by in MySQL. I ran into this very same scenario in a WordPress Implementation. I needed ROW_NUMBER() and it wasn't there.
http://www.explodybits.com/2011/11/mysql-row-number/
The example in the article is using a single partition by field. To partition by additional fields you could do something like this:
SELECT @row_num := IF(@prev_value=concat_ws('',t.col1,t.col2),@row_num+1,1) AS RowNumber
,t.col1
,t.col2
,t.Col3
,t.col4
,@prev_value := concat_ws('',t.col1,t.col2)
FROM table1 t,
(SELECT @row_num := 1) x,
(SELECT @prev_value := '') y
ORDER BY t.col1,t.col2,t.col3,t.col4
Using concat_ws handles null's. I tested this against 3 fields using an int, date, and varchar. Hope this helps. Check out the article as it breaks this query down and explains it.
In my case after downgrading from .NET 4.5 to .NET 4.0 project was working fine on a local machine, but was failing on server after publishing.
Turns out that destination had some old assemblies, which were still referencing .NET 4.5.
Fixed it by enabling publishing option "Delete all existing files prior to publish"
use a css3 class "spinner". It's more beautiful and you don't need .gif
.spinner {
position: absolute;
left: 50%;
top: 50%;
height:60px;
width:60px;
margin:0px auto;
-webkit-animation: rotation .6s infinite linear;
-moz-animation: rotation .6s infinite linear;
-o-animation: rotation .6s infinite linear;
animation: rotation .6s infinite linear;
border-left:6px solid rgba(0,174,239,.15);
border-right:6px solid rgba(0,174,239,.15);
border-bottom:6px solid rgba(0,174,239,.15);
border-top:6px solid rgba(0,174,239,.8);
border-radius:100%;
}
@-webkit-keyframes rotation {
from {-webkit-transform: rotate(0deg);}
to {-webkit-transform: rotate(359deg);}
}
@-moz-keyframes rotation {
from {-moz-transform: rotate(0deg);}
to {-moz-transform: rotate(359deg);}
}
@-o-keyframes rotation {
from {-o-transform: rotate(0deg);}
to {-o-transform: rotate(359deg);}
}
@keyframes rotation {
from {transform: rotate(0deg);}
to {transform: rotate(359deg);}
}
Exemple of what is looks like : http://jsbin.com/roqakuxebo/1/edit
You can find a lot of css spinners like this here : http://cssload.net/en/spinners/
If I remember correctly, I set the DataSource property to null to clear the DataGridView:
datagridview.DataSource = null;
git --branch <branchname> <url>
But bash completion don't get this key: --branch
As far as I can see it you can use the following:
ls | xargs -n 1 cp -i file.dat
The -i
option of cp
command means that you will be asked whether to overwrite a file in the current directory with the file.dat
. Though it is not a completely automatic solution it worked out for me.
My mistake was different than everything so far mentioned. If you have no idea why you would have a detached head, then you probably don't. I was working on autopilot with git commit
and git push
, and hadn't read the output from git commit
. Turns out, it was an error message because I forgot -am.
[colin] ~/github/rentap.js [master] M % git commit 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers'
error: pathspec 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers' did not match any file(s) known to git.
[colin] ~/github/rentap.js [master] M % git push
Enter passphrase for key '/home/colin/.ssh/id_ecdsa':
Everything up-to-date
Fixed it by putting -am
where I usually do:
[colin] ~/github/rentap.js [master] M % git commit -am 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers'
This may also happen if you have a faulty or accidental equation in your csv file. i.e - One of the cells in your csv file starts with an equals sign (=) (An excel equation) which will, in turn throw an error. If you fix, or remove this equation by getting rid of the equals sign, it should solve the ORA-06502 error.
The way to do this using the Extention Methods, instead of the linq query syntax would be like this:
var results = workOrders.Join(plans,
wo => wo.WorkOrderNumber,
p => p.WorkOrderNumber,
(order,plan) => new {order.WorkOrderNumber, order.WorkDescription, plan.ScheduledDate}
);
Using not a
to test whether a
is None
assumes that the other possible values of a
have a truth value of True
. However, most NumPy arrays don't have a truth value at all, and not
cannot be applied to them.
If you want to test whether an object is None
, the most general, reliable way is to literally use an is
check against None
:
if a is None:
...
else:
...
This doesn't depend on objects having a truth value, so it works with NumPy arrays.
Note that the test has to be is
, not ==
. is
is an object identity test. ==
is whatever the arguments say it is, and NumPy arrays say it's a broadcasted elementwise equality comparison, producing a boolean array:
>>> a = numpy.arange(5)
>>> a == None
array([False, False, False, False, False])
>>> if a == None:
... pass
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: The truth value of an array with more than one element is ambiguous.
Use a.any() or a.all()
On the other side of things, if you want to test whether an object is a NumPy array, you can test its type:
# Careful - the type is np.ndarray, not np.array. np.array is a factory function.
if type(a) is np.ndarray:
...
else:
...
You can also use isinstance
, which will also return True
for subclasses of that type (if that is what you want). Considering how terrible and incompatible np.matrix
is, you may not actually want this:
# Again, ndarray, not array, because array is a factory function.
if isinstance(a, np.ndarray):
...
else:
...
If it's a nested Type, you might be forgetting to transform a . to a +
Regardless, typeof( T).FullName
will tell you what you should be saying
EDIT: BTW the usings (as I'm sure you know) are only directives to the compiler at compile time and cannot thus have any impact on the API call's success. (If you had project or assembly references, that could potentially have had influence - hence the information isnt useless, it just takes some filtering...)
This is how I solved the problem:
User inbound = ...
User existing = userRepository.findByFirstname(inbound.getFirstname());
if(existing != null) inbound.setId(existing.getId());
userRepository.save(inbound);
You can also run ->select('DISTINCT `field`', FALSE)
and the second parameter tells CI
not to escape the first argument.
With the second parameter as false
, the output would be SELECT DISTINCT `field`
instead of without the second parameter, SELECT `DISTINCT` `field`
If you have simple dropdown like:
<select name="status" id="status">
<option value="1">Active</option>
<option value="0">Inactive</option>
</select>
Then you can use this code for getting value:
$(function(){
$("#status").change(function(){
var status = this.value;
alert(status);
if(status=="1")
$("#icon_class, #background_class").hide();// hide multiple sections
});
});
Under the hood all empty check methods in all libraries use object keys checking logic. Its an odd way to make it understandable, which you can put in a method, Described here.
for(key in obj){
//your work here.
break;
}
Which has evolved in ES5, now put simply you can check the object's keys length, using Object.Keys
method which takes your object as it's parameter:
if(Object.keys(obj).length > 0){
//do your work here
}
Or if you are using Lodash (you must be) then.
_.isEmpty(obj) //==true or false
More detail on Mr Dredel's answer and tuinstoel's comment. The data in the column will be stored in its specific case, but you can change your session's case-sensitivity for matching.
You can change either the session or the database to use linguistic or case insensitive searching. You can also set up indexes to use particular sort orders.
eg
ALTER SESSION SET NLS_SORT=BINARY_CI;
Once you start getting into non-english languages, with accents and so on, there's additional support for accent-insensitive. Some of the capabilities vary by version, so check out the Globablization document for your particular version of Oracle. The latest (11g) is here
If you are using Ubuntu
with Apache+php5
, then on current versions there are 2 places where you need to change to short_open_tag = On
/etc/php5/apache2/php.ini
- this is for the pages loaded through your web server (Apache)/etc/php5/cli/php.ini
- this configuration is used when you launch your php files from command line, like: php yourscript.php
- that goes for manually or cronjob executed php files directly on the server.Another simple way is to create a function and check if the checkbox(es) are checked or not, and disable a button that way using jQuery.
HTML:
<input type="checkbox" id="myCheckbox" />
<input type="submit" id="myButton" />
JavaScript:
var alterDisabledState = function () {
var isMyCheckboxChecked = $('#myCheckbox').is(':checked');
if (isMyCheckboxChecked) {
$('myButton').removeAttr("disabled");
}
else {
$('myButton').attr("disabled", "disabled");
}
}
Now you have a button that is disabled until they select the checkbox, and now you have a better user experience. I would make sure that you still do the server side validation though.
It's just taking a generally useless keyword and giving it a new, better functionality. It's standard in C++11, and most C++ compilers with even some C++11 support will support it.
Simple step: Go to the task manager and kill the java process
then start your apllication
I may have found one further difference of a minor nature. I have my python environments under /usr
rather than /home
or whatever. In order to install to it, I would have to use sudo install pip
. For me, the undesired side effect of sudo install pip
was slightly different than what are widely reported elsewhere: after doing so, I had to run python
with sudo
in order to import any of the sudo
-installed packages. I gave up on that and eventually found I could use sudo conda
to install packages to an environment under /usr
which then imported normally without needing sudo
permission for python
. I even used sudo conda
to fix a broken pip
rather than using sudo pip uninstall pip
or sudo pip --upgrade install pip
.
For future reference:
yyyy => 4 digit year
MM => 2 digit month (you must type MM in ALL CAPS)
dd => 2 digit "day of the month"
HH => 2-digit "hour in day" (0 to 23)
mm => 2-digit minute (you must type mm in lowercase)
ss => 2-digit seconds
SSS => milliseconds
So "yyyy-MM-dd HH:mm:ss" returns "2018-01-05 09:49:32"
But "MMM dd, yyyy hh:mm a" returns "Jan 05, 2018 09:49 am"
The so-called examples at https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html show only output. They do not tell you what formats to use!
I have a file that I need to act differently when it's included vs when it's accessed directly (mainly a print()
vs return()
) Here's some modified code:
if(count(get_included_files()) ==1) exit("Direct access not permitted.");
The file being accessed is always an included file, hence the == 1.
Another just for testing solution to this is by simply changing your bundle id. Just don't forget to change it back once you're done!
Use array_slice()
This is an example from the PHP manual: array_slice
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
There is only a small issue
If the array indices are meaningful to you, remember that array_slice
will reset and reorder the numeric array indices. You need the preserve_keys
flag set to true
to avoid this. (4th parameter, available since 5.0.2).
Example:
$output = array_slice($input, 2, 3, true);
Output:
array([3]=>'c', [4]=>'d', [5]=>'e');
Here's an abstraction of Will Nathan's answer if anyone just wants an easy copy-paste add-in function:
function find (name, query, cb) {
mongoose.connection.db.collection(name, function (err, collection) {
collection.find(query).toArray(cb);
});
}
simply do find(collection_name, query, callback);
to be given the result.
for example, if I have a document { a : 1 } in a collection 'foo' and I want to list its properties, I do this:
find('foo', {a : 1}, function (err, docs) {
console.dir(docs);
});
//output: [ { _id: 4e22118fb83406f66a159da5, a: 1 } ]
As of C#7 this isn't supported. There are however discussions about integrating something like that in C#8 and proposals worth supporting.
This solution doesn't need web.config file changes or catch-all routes.
First, create a controller like this;
public class ErrorController : Controller
{
public ActionResult Index()
{
ViewBag.Title = "Regular Error";
return View();
}
public ActionResult NotFound404()
{
ViewBag.Title = "Error 404 - File not Found";
return View("Index");
}
}
Then create the view under "Views/Error/Index.cshtml" as;
@{
Layout = "~/Views/Shared/_Layout.cshtml";
}
<p>We're sorry, page you're looking for is, sadly, not here.</p>
Then add the following in the Global asax file as below:
protected void Application_Error(object sender, EventArgs e)
{
// Do whatever you want to do with the error
//Show the custom error page...
Server.ClearError();
var routeData = new RouteData();
routeData.Values["controller"] = "Error";
if ((Context.Server.GetLastError() is HttpException) && ((Context.Server.GetLastError() as HttpException).GetHttpCode() != 404))
{
routeData.Values["action"] = "Index";
}
else
{
// Handle 404 error and response code
Response.StatusCode = 404;
routeData.Values["action"] = "NotFound404";
}
Response.TrySkipIisCustomErrors = true; // If you are using IIS7, have this line
IController errorsController = new ErrorController();
HttpContextWrapper wrapper = new HttpContextWrapper(Context);
var rc = new System.Web.Routing.RequestContext(wrapper, routeData);
errorsController.Execute(rc);
Response.End();
}
If you still get the custom IIS error page after doing this, make sure the following sections are commented out(or empty) in the web config file:
<system.web>
<customErrors mode="Off" />
</system.web>
<system.webServer>
<httpErrors>
</httpErrors>
</system.webServer>
Now we have to use android.hardware.camera2 as android.hardware.Camera is deprecated which will only work on API >23 FlashLight
public class MainActivity extends AppCompatActivity {
Button button;
Boolean light=true;
CameraDevice cameraDevice;
private CameraManager cameraManager;
private CameraCharacteristics cameraCharacteristics;
String cameraId;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)findViewById(R.id.button);
cameraManager = (CameraManager)
getSystemService(Context.CAMERA_SERVICE);
try {
cameraId = cameraManager.getCameraIdList()[0];
} catch (CameraAccessException e) {
e.printStackTrace();
}
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(light){
try {
cameraManager.setTorchMode(cameraId,true);
} catch (CameraAccessException e) {
e.printStackTrace();
}
light=false;}
else {
try {
cameraManager.setTorchMode(cameraId,false);
} catch (CameraAccessException e) {
e.printStackTrace();
}
light=true;
}
}
});
}
}
Right, I jst had a similar problem but managed to fix it with media queries and simple CSS. I'm sure I'm breaking some rules here, but it's working for me.
I basically had to take a massive application someone made, and make it responsive. They used jQueryUI and asked me not to tamper with any of their jQuery, so I was restricted to using CSS alone.
When I pressed one of their buttons in touchscreen mode, the hover effect woudld fire for a second before the button's action took effect. Here's how I fixed it.
@media only screen and (max-width:1024px) {
#buttonOne{
height: 44px;
}
#buttonOne:hover{
display:none;
}
}
Using br
elements is fine, and as long as you don't need a lot of space between elements, is actually a logical thing to do as anyone can read your code and understand what spacing logic you are using.
The alternative is to create a custom class for white space. In bootstrap 4 you can use
<div class="w-100"></div>
to make a blank row across the page, but this is no different to using the <br>
tag. The downside to creating a custom class for white space is that it can be a pain to read for others who view your code. A custom class would also apply the same amount of white space each time you used it, so if you wanted different amounts of white space on the same page, then you would need to create several white space classes.
In most cases, it is just easier to use <br>
or <div class="w-100"></div>
for the sake of ease and readability. it doesn't look pretty, but it works.
Simply, use the split to find out the number of occurrences of a character in a string.
mainStr.split(',').length
// gives 4 which is the number of strings after splitting using delimiter comma
mainStr.split(',').length - 1
// gives 3 which is the count of comma
To improve on the answer provided by @artofwarfare, here is what I consider a neater way to check for the message
attribute and print it or print the Exception
object as a fallback.
try:
pass
except Exception as e:
print getattr(e, 'message', repr(e))
The call to repr
is optional, but I find it necessary in some use cases.
Update #1:
Following the comment by @MadPhysicist, here's a proof of why the call to repr
might be necessary. Try running the following code in your interpreter:
try:
raise Exception
except Exception as e:
print(getattr(e, 'message', repr(e)))
print(getattr(e, 'message', str(e)))
Update #2:
Here is a demo with specifics for Python 2.7 and 3.5: https://gist.github.com/takwas/3b7a6edddef783f2abddffda1439f533
This answer is focused to someone that buy a domain in another site (as GoDaddy) and want to use the Amazon free certificate with Certificate Manager
This answer uses Amazon Classic Load Balancer (paid) see the pricing before using it
Step 1 - Request a certificate with Certificate Manager
Go to Certificate Manager > Request Certificate > Request a public certificate
On Domain name you will add myprojectdomainname.com
and *.myprojectdomainname.com
and go on Next
Chose Email validation and Confirm and Request
Open the email that you have received (on the email account that you have buyed the domain) and aprove the request
After this, check if the validation status of myprojectdomainname.com
and *.myprojectdomainname.com
is sucess, if is sucess you can continue to Step 2
Step 2 - Create a Security Group to a Load Balancer
On EC2 go to Security Groups > and Create a Security Group and add the http and https inbound
Step 3 - Create the Load Balancer
EC2 > Load Balancer > Create Load Balancer > Classic Load Balancer (Third option)
Create LB inside - the vpc of your project On Load Balancer Protocol add Http and Https
Next > Select exiting security group
Choose the security group that you have create in the previous step
Next > Choose certificate from ACM
Select the certificate of the step 1
Next >
on Health check i've used the ping path / (one slash instead of /index.html)
Step 4 - Associate your instance with the security group of load balancer
EC2 > Instances > click on your project > Actions > Networking > Change Security Groups
Add the Security Group of your Load Balancer
Step 5
EC2 > Load Balancer > Click on the load balancer that you have created > copy the DNS Name (A Record), it will be something like myproject-2021611191.us-east-1.elb.amazonaws.com
Go to Route 53 > Routes Zones > click on the domain name > Go to Records Sets
(If you are don't have your domain here, create a hosted zone with Domain Name: myprojectdomainname.com
and Type: Public Hosted Zone
)
Check if you have a record type A (probably not), create/edit record set with name empty, type A, alias Yes and Target the dns that you have copied
Create also a new Record Set of type A, name *.myprojectdomainname.com
, alias Yes and Target your domain (myprojectdomainname.com). This will make possible access your site with www.myprojectdomainname.com and subsite.myprojectdomainname.com. Note: You will need to configure your reverse proxy (Nginx/Apache) to do so.
On NS copy the 4 Name Servers values to use on the next Step, it will be something like:
ns-362.awsdns-45.com
ns-1558.awsdns-02.co.uk
ns-737.awsdns-28.net
ns-1522.awsdns-62.org
Go to EC2 > Instances > And copy the IPv4 Public IP too
Step 6
On the domain register site that you have buyed the domain (in my case GoDaddy)
Change the routing to http : <Your IPv4 Public IP Number>
and select Forward with masking
Change the Name Servers (NS) to the 4 NS that you have copied, this can take 48 hours to make effect
I would probably just do:
..
echo Before you enter your password, make sure no-one is looking!
set /P password=Password:
cls
echo Thanks, got that.
..
So you get a prompt, then the screen clears after it's entered.
Note that the entered password will be stored in the CMD history if the batch file is executed from a command prompt (Thanks @Mark K Cowan).
If that wasn't good enough, I would either switch to python, or write an executable instead of a script.
I know none of these are perfect soutions, but maybe one is good enough for you :)
If you want a (almost) one-liner:
from collections import deque d = {} deque((d.setdefault(year, []).append(value) for year, value in source_of_data), maxlen=0)
Using dict.setdefault
, you can encapsulate the idea of "check if the key already exists and make a new list if not" into a single call. This allows you to write a generator expression which is consumed by deque
as efficiently as possible since the queue length is set to zero. The deque will be discarded immediately and the result will be in d
.
This is something I just did for fun. I don't recommend using it. There is a time and a place to consume arbitrary iterables through a deque, and this is definitely not it.
This option was introduced in order to remove the need to deploy very large PIAs (Primary Interop Assemblies) for interop.
It simply embeds the managed bridging code used that allows you to talk to unmanaged assemblies, but instead of embedding it all it only creates the stuff you actually use in code.
Read more in Scott Hanselman's blog post about it and other VS improvements here.
As for whether it is advised or not, I'm not sure as I don't need to use this feature. A quick web search yields a few leads:
The only risk of turning them all to false is more deployment concerns with PIA files and a larger deployment if some of those files are large.
The thread module does work simultaneously unlike multiprocess, but the timing is a bit off. The code below prints a "1" and a "2". These are called by different functions respectively. I did notice that when printed to the console, they would have slightly different timings.
from threading import Thread
def one():
while(1 == num):
print("1")
time.sleep(2)
def two():
while(1 == num):
print("2")
time.sleep(2)
p1 = Thread(target = one)
p2 = Thread(target = two)
p1.start()
p2.start()
Output: (Note the space is for the wait in between printing)
1
2
2
1
12
21
12
1
2
Not sure if there is a way to correct this, or if it matters at all. Just something I noticed.
I've had the same error as you have and it turned out that there was nothing wrong with the code. The problem was that the webserver was sending the wrong Content-Type header.
Try wireshark or something similar to see what content-type the webserver is sending.
The most current version of the stemmer in NLTK is Snowball.
You can find examples on how to use it here:
http://nltk.googlecode.com/svn/trunk/doc/api/nltk.stem.snowball2-pysrc.html#demo
You can use LEN in combination with SUBSTRING:
SELECT SUBSTRING(myColumn, 7, LEN(myColumn)) from myTable
SHOW TABLE STATUS WHERE Name = 'xxx'
This will give you (among other things) an Engine
column, which is what you want.
In Management Studio, open the Object Explorer.
Views
Script view as > Create To > New query window
and you're done!
If you want to retrieve the SQL statement that defines the view from T-SQL code, use this:
SELECT
m.definition
FROM sys.views v
INNER JOIN sys.sql_modules m ON m.object_id = v.object_id
WHERE name = 'Example_1'
Here is a solution that does not make a geocoding request that may return an incorrect result: http://jsfiddle.net/amirnissim/2D6HW/
It simulates a down-arrow
keypress whenever the user hits return
inside the autocomplete field. The ? event is triggered before the return event so it simulates the user selecting the first suggestion using the keyboard.
Here is the code (tested on Chrome and Firefox) :
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js'></script>
<script src="https://maps.googleapis.com/maps/api/js?sensor=false&libraries=places"></script>
<script>
var pac_input = document.getElementById('searchTextField');
(function pacSelectFirst(input) {
// store the original event binding function
var _addEventListener = (input.addEventListener) ? input.addEventListener : input.attachEvent;
function addEventListenerWrapper(type, listener) {
// Simulate a 'down arrow' keypress on hitting 'return' when no pac suggestion is selected,
// and then trigger the original listener.
if (type == "keydown") {
var orig_listener = listener;
listener = function(event) {
var suggestion_selected = $(".pac-item-selected").length > 0;
if (event.which == 13 && !suggestion_selected) {
var simulated_downarrow = $.Event("keydown", {
keyCode: 40,
which: 40
});
orig_listener.apply(input, [simulated_downarrow]);
}
orig_listener.apply(input, [event]);
};
}
_addEventListener.apply(input, [type, listener]);
}
input.addEventListener = addEventListenerWrapper;
input.attachEvent = addEventListenerWrapper;
var autocomplete = new google.maps.places.Autocomplete(input);
})(pac_input);
</script>
First of all I love the script written by devart and I wanted to use it, but I found some limitation, so I decided to improve it:
I didn't have time to test it properly and I tested it only on SQL Server 2012/4
The next version will change the generation of FKs because they need to be added at the end. Otherwise they may fail.
Any comment will be appreciated.
set transaction isolation level read uncommitted;
SET NOCOUNT ON;
SET STATISTICS TIME OFF;
SET STATISTICS IO OFF;
-- http://stackoverflow.com/questions/12639948/sql-nvarchar-and-varchar-limits
--NB: Crazy table can still have truncation at 4000 because of unexpected number of indexes or other very long list of columns/defaults etc
-- triggers are not supported
-- xml indexes are not supported
DECLARE @Tables table(id int identity(1,1), [name] sysname);
insert into @Tables([name])
values
('<yourSchema>.<youTableName>')
,('<yourSchema2>.<youTableName2>')
;
DECLARE @object_id int;
DECLARE @SourceDatabase nvarchar(max) = N'SourceTest'; --this is used only by the insert
DECLARE @TargetDatabase nvarchar(max) = N'DescTest'; --this is used only by the insert and USE <DBName>
--- options ---
DECLARE @UseTransaction bit = 0;
DECLARE @GenerateUseDatabase bit = 0;
DECLARE @GenerateFKs bit = 1;
DECLARE @GenerateIdentity bit = 1;
DECLARE @GenerateCollation bit = 0;
DECLARE @GenerateCreateTable bit = 1;
DECLARE @GenerateIndexes bit = 1;
DECLARE @GenerateConstraints bit = 1;
DECLARE @GenerateKeyConstraints bit = 1;
DECLARE @GenerateConstraintNameOfDefaults bit = 1;
DECLARE @GenerateDropIfItExists bit = 1;
DECLARE @GenerateDropFKIfItExists bit = 0;
DECLARE @GenerateDelete bit = 0;
DECLARE @GenerateInsertInto bit = 0;
DECLARE @GenerateIdentityInsert int = 0; --0 ignore set,but add column; 1 generate; 2 ignore set and column
DECLARE @GenerateSetNoCount int = 2; --0 ignore set,1=set on, 2=set off
DECLARE @GenerateMessages bit = 1; --print with no wait
DECLARE @GenerateDataCompressionOptions bit = 1; --TODO: generates the compression option only of the table, not the indexes
--NB: the compression options reflects the design value.
--The actual compression of a the page is saved here
--SELECT * from sys.dm_db_database_page_allocations(DB_ID(), @object_ID, 0, 1, 'DETAILED')
-----------------------------------------------------------------------------
------------------------------------------------------------------------------
--- Let's play
DECLARE @DataTypeSpacer int = 45; --this is just to improve the formatting of the script ...
DECLARE @name sysname;
DECLARE @SQL NVARCHAR(MAX) = N''
DECLARE db_cursor CURSOR FOR SELECT [name] from @Tables
OPEN db_cursor
FETCH NEXT FROM db_cursor INTO @name
WHILE @@FETCH_STATUS = 0
BEGIN
SET @object_id = object_ID(@name)
goto CreateScript;
backFromCreateScript:
FETCH NEXT FROM db_cursor INTO @name
END
CLOSE db_cursor
DEALLOCATE db_cursor
return;
CreateScript:
DECLARE @CR NVARCHAR(max) = NCHAR(13);
DECLARE @TB NVARCHAR(max) = NCHAR(9);
DECLARE @CurrentIndent nvarchar(max) = ''
;WITH index_column AS
(
SELECT
ic.[object_id]
, ic.index_id
, ic.is_descending_key
, ic.is_included_column
, c.name
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON ic.[object_id] = c.[object_id] AND ic.column_id = c.column_id
WHERE ic.[object_id] = @object_id
),
fk_columns AS
(
SELECT
k.constraint_object_id
, cname = c.name
, rcname = rc.name
FROM sys.foreign_key_columns k WITH (NOWAIT)
JOIN sys.columns rc WITH (NOWAIT) ON rc.[object_id] = k.referenced_object_id AND rc.column_id = k.referenced_column_id
JOIN sys.columns c WITH (NOWAIT) ON c.[object_id] = k.parent_object_id AND c.column_id = k.parent_column_id
WHERE k.parent_object_id = @object_id and @GenerateFKs = 1
)
SELECT @SQL =
-------------------- USE DATABASE --------------------------------------------------------------------------------------------------
CAST(
CASE WHEN @GenerateUseDatabase = 1
THEN N'USE ' + @TargetDatabase + N';' + @CR
ELSE N'' END
as nvarchar(max))
+
-------------------- SET NOCOUNT --------------------------------------------------------------------------------------------------
CAST(
CASE @GenerateSetNoCount
WHEN 1 THEN N'SET NOCOUNT ON;' + @CR
WHEN 2 THEN N'SET NOCOUNT OFF;' + @CR
ELSE N'' END
as nvarchar(max))
+
-------------------- USE TRANSACTION --------------------------------------------------------------------------------------------------
CAST(
CASE WHEN @UseTransaction = 1
THEN
N'SET XACT_ABORT ON' + @CR
+ N'BEGIN TRY' + @CR
+ N'BEGIN TRAN' + @CR
ELSE N'' END
as nvarchar(max))
+
-------------------- DROP SYNONYM --------------------------------------------------------------------------------------------------
CASE WHEN @GenerateDropIfItExists = 1
THEN
CAST(
N'IF OBJECT_ID(''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''',''SN'') IS NOT NULL DROP SYNONYM ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N';' + @CR
as nvarchar(max))
ELSE
CAST(
N''
as nvarchar(max))
END
+
-------------------- DROP IS Exists --------------------------------------------------------------------------------------------------
CASE WHEN @GenerateDropIfItExists = 1
THEN
--Drop table if exists
CAST(
N'IF OBJECT_ID(''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''',''U'') IS NOT NULL DROP TABLE ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N';' + @CR
as nvarchar(max))
+ @CR
ELSE N'' END
+
-------------------- DROP IS Exists --------------------------------------------------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 and @GenerateDropFKIfItExists = 1 THEN
N'RAISERROR(''DROP CONSTRAINTS OF %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
CASE WHEN @GenerateDropFKIfItExists = 1
THEN
--Drop foreign keys
ISNULL(((
SELECT
CAST(
N'ALTER TABLE ' + quotename(s.name) + N'.' + quotename(t.name) + N' DROP CONSTRAINT ' + RTRIM(f.name) + N';' + @CR
as nvarchar(max))
FROM sys.tables t
INNER JOIN sys.foreign_keys f ON f.parent_object_id = t.object_id
INNER JOIN sys.schemas s ON s.schema_id = f.schema_id
WHERE f.referenced_object_id = @object_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'))
,N'') + @CR
ELSE N'' END
+
--------------------- CREATE TABLE -----------------------------------------------------------------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 THEN
N'RAISERROR(''CREATE TABLE %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
CASE WHEN @GenerateCreateTable = 1 THEN
CAST(
N'CREATE TABLE ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + @CR + N'(' + @CR + STUFF((
SELECT
CAST(
@TB + N',' + quotename(c.name) + N' ' + ISNULL(replicate(' ',@DataTypeSpacer - len(quotename(c.name))),'') --isnull(replicate) then len(quotename(c.name)) > @DataTypeSpacer
+
CASE WHEN c.is_computed = 1
THEN N' AS ' + cc.[definition]
ELSE UPPER(tp.name) +
CASE WHEN tp.name IN (N'varchar', N'char', N'varbinary', N'binary', N'text')
THEN N'(' + CASE WHEN c.max_length = -1 THEN N'MAX' ELSE CAST(c.max_length AS NVARCHAR(5)) END + N')'
WHEN tp.name IN (N'nvarchar', N'nchar', N'ntext')
THEN N'(' + CASE WHEN c.max_length = -1 THEN N'MAX' ELSE CAST(c.max_length / 2 AS NVARCHAR(5)) END + N')'
WHEN tp.name IN (N'datetime2', N'time2', N'datetimeoffset')
THEN N'(' + CAST(c.scale AS NVARCHAR(5)) + N')'
WHEN tp.name = N'decimal'
THEN N'(' + CAST(c.[precision] AS NVARCHAR(5)) + N',' + CAST(c.scale AS NVARCHAR(5)) + N')'
ELSE N''
END +
CASE WHEN c.collation_name IS NOT NULL and @GenerateCollation = 1 THEN N' COLLATE ' + c.collation_name ELSE N'' END +
CASE WHEN c.is_nullable = 1 THEN N' NULL' ELSE N' NOT NULL' END +
CASE WHEN dc.[definition] IS NOT NULL THEN CASE WHEN @GenerateConstraintNameOfDefaults = 1 THEN N' CONSTRAINT ' + quotename(dc.name) ELSE N'' END + N' DEFAULT' + dc.[definition] ELSE N'' END +
CASE WHEN ic.is_identity = 1 and @GenerateIdentity = 1 THEN N' IDENTITY(' + CAST(ISNULL(ic.seed_value, N'0') AS NCHAR(1)) + N',' + CAST(ISNULL(ic.increment_value, N'1') AS NCHAR(1)) + N')' ELSE N'' END
END + @CR
AS nvarchar(Max))
FROM sys.columns c WITH (NOWAIT)
INNER JOIN sys.types tp WITH (NOWAIT) ON c.user_type_id = tp.user_type_id
LEFT JOIN sys.computed_columns cc WITH (NOWAIT) ON c.[object_id] = cc.[object_id] AND c.column_id = cc.column_id
LEFT JOIN sys.default_constraints dc WITH (NOWAIT) ON c.default_object_id != 0 AND c.[object_id] = dc.parent_object_id AND c.column_id = dc.parent_column_id
LEFT JOIN sys.identity_columns ic WITH (NOWAIT) ON c.is_identity = 1 AND c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE c.[object_id] = @object_id
ORDER BY c.column_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, @TB + N' ')
as nvarchar(max))
ELSE
CAST('' as nvarchar(max))
end
+
---------------------- Key Constraints ----------------------------------------------------------------
CAST(
case when @GenerateKeyConstraints <> 1 THEN N'' ELSE
ISNULL((SELECT @TB + N', CONSTRAINT ' + quotename(k.name) + N' PRIMARY KEY ' + ISNULL(kidx.type_desc, N'') + N'(' +
(SELECT STUFF((
SELECT N', ' + quotename(c.name) + N' ' + CASE WHEN ic.is_descending_key = 1 THEN N'DESC' ELSE N'ASC' END
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE ic.is_included_column = 0
AND ic.[object_id] = k.parent_object_id
AND ic.index_id = k.unique_index_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, N''))
+ N')' + @CR
FROM sys.key_constraints k WITH (NOWAIT) LEFT JOIN sys.indexes kidx ON
k.parent_object_id = kidx.object_id and k.unique_index_id = kidx.index_id
WHERE k.parent_object_id = @object_id
AND k.[type] = N'PK'), N'') + N')' + @CR
END
as nvarchar(max))
+
CAST(
CASE
WHEN
@GenerateDataCompressionOptions = 1
AND
(SELECT top 1 data_compression_desc from sys.partitions where object_ID = @object_id and index_id = 1) <> N'NONE'
THEN
N'WITH (DATA_COMPRESSION=' + (SELECT top 1 data_compression_desc from sys.partitions where object_ID = @object_id and index_id = 1) + N')' + @CR
ELSE
N'' + @CR
END as nvarchar(max))
+
--------------------- FOREIGN KEYS -----------------------------------------------------------------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 and @GenerateDropFKIfItExists = 1 THEN
N'RAISERROR(''CREATING FK OF %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
CAST(
ISNULL((SELECT (
SELECT @CR +
N'ALTER TABLE ' + + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + + N' WITH'
+ CASE WHEN fk.is_not_trusted = 1
THEN N' NOCHECK'
ELSE N' CHECK'
END +
N' ADD CONSTRAINT ' + quotename(fk.name) + N' FOREIGN KEY('
+ STUFF((
SELECT N', ' + quotename(k.cname) + N''
FROM fk_columns k
WHERE k.constraint_object_id = fk.[object_id]
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, N'')
+ N')' +
N' REFERENCES ' + quotename(SCHEMA_NAME(ro.[schema_id])) + N'.' + quotename(ro.name) + N' ('
+ STUFF((
SELECT N', ' + quotename(k.rcname) + N''
FROM fk_columns k
WHERE k.constraint_object_id = fk.[object_id]
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, N'')
+ N')'
+ CASE
WHEN fk.delete_referential_action = 1 THEN N' ON DELETE CASCADE'
WHEN fk.delete_referential_action = 2 THEN N' ON DELETE SET NULL'
WHEN fk.delete_referential_action = 3 THEN N' ON DELETE SET DEFAULT'
ELSE N''
END
+ CASE
WHEN fk.update_referential_action = 1 THEN N' ON UPDATE CASCADE'
WHEN fk.update_referential_action = 2 THEN N' ON UPDATE SET NULL'
WHEN fk.update_referential_action = 3 THEN N' ON UPDATE SET DEFAULT'
ELSE N''
END
+ @CR + N'ALTER TABLE ' + + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + + N' CHECK CONSTRAINT ' + quotename(fk.name) + N'' + @CR
FROM sys.foreign_keys fk WITH (NOWAIT)
JOIN sys.objects ro WITH (NOWAIT) ON ro.[object_id] = fk.referenced_object_id
WHERE fk.parent_object_id = @object_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)')), N'')
as nvarchar(max))
+
--------------------- INDEXES ----------------------------------------------------------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 and @GenerateIndexes = 1 THEN
N'RAISERROR(''CREATING INDEXES OF %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
case when @GenerateIndexes = 1 THEN
CAST(
ISNULL(((SELECT
@CR + N'CREATE' + CASE WHEN i.is_unique = 1 THEN N' UNIQUE ' ELSE N' ' END
+ i.type_desc + N' INDEX ' + quotename(i.name) + N' ON ' + + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + + N' (' +
STUFF((
SELECT N', ' + quotename(c.name) + N'' + CASE WHEN c.is_descending_key = 1 THEN N' DESC' ELSE N' ASC' END
FROM index_column c
WHERE c.is_included_column = 0
AND c.index_id = i.index_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, N'') + N')'
+ ISNULL(@CR + N'INCLUDE (' +
STUFF((
SELECT N', ' + quotename(c.name) + N''
FROM index_column c
WHERE c.is_included_column = 1
AND c.index_id = i.index_id
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)'), 1, 2, N'') + N')', N'') + @CR
FROM sys.indexes i WITH (NOWAIT)
WHERE i.[object_id] = @object_id
AND i.is_primary_key = 0
AND i.[type] in (1,2)
and @GenerateIndexes = 1
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)')
), N'')
as nvarchar(max))
ELSE
CAST(N'' as nvarchar(max))
END
+
------------------------ @GenerateDelete ----------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 and @GenerateDelete = 1 THEN
N'RAISERROR(''TRUNCATING %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
CASE WHEN @GenerateDelete = 1 THEN
CAST(
(CASE WHEN exists (SELECT * FROM sys.foreign_keys WHERE referenced_object_id = @object_id) THEN
N'DELETE FROM ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N';' + @CR
ELSE
N'TRUNCATE TABLE ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N';' + @CR
END)
AS NVARCHAR(max))
ELSE
CAST(N'' as nvarchar(max))
END
+
------------------------- @GenerateInsertInto ----------------------------------------------------------
CAST((CASE WHEN @GenerateMessages = 1 and @GenerateDropFKIfItExists = 1 THEN
N'RAISERROR(''INSERTING INTO %s'',10,1, ''' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N''') WITH NOWAIT;' + @CR
ELSE N'' END) as nvarchar(max))
+
CASE WHEN @GenerateInsertInto = 1
THEN
CAST(
CASE WHEN EXISTS (SELECT * from sys.columns c where c.[object_id] = @object_id and is_identity = 1) AND @GenerateIdentityInsert = 1 THEN
N'SET IDENTITY_INSERT ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N' ON;' + @CR
ELSE
CAST('' AS nvarchar(max))
END
+
N'INSERT INTO ' + QUOTENAME(@TargetDatabase) + N'.' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N'('
+ @CR
+
(
@TB + N' ' + SUBSTRING(
(
SELECT @TB + ','+ quotename(Name) + @CR
from sys.columns c
where
c.[object_id] = @object_id
AND system_type_ID <> 189 /*timestamp*/
AND is_computed = 0
and (is_identity = 0 or @GenerateIdentityInsert in (0,1))
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)')
,3,99999)
)
+ N')' + @CR + N'SELECT '
+ @CR
+
(
@TB + N' ' + SUBSTRING(
(
SELECT @TB + ','+ quotename(Name) + @CR
FROM sys.columns c
WHERE c.[object_id] = @object_id
and system_type_ID <> 189 /*timestamp*/
and is_computed = 0
and (is_identity = 0 or @GenerateIdentityInsert in (0,1))
FOR XML PATH(N''), TYPE).value(N'.', N'NVARCHAR(MAX)')
,3,99999)
)
+ N'FROM ' + @SourceDatabase + N'.' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id))
+ N';' + @CR
+ CASE WHEN EXISTS (SELECT * from sys.columns c where c.[object_id] = @object_id and is_identity = 1) AND @GenerateIdentityInsert = 1 THEN
N'SET IDENTITY_INSERT ' + quotename(OBJECT_schema_name(@object_id)) + N'.' + quotename(OBJECT_NAME(@object_id)) + N' OFF;'+ @CR
ELSE
CAST('' AS nvarchar(max))
END
as nvarchar(max))
ELSE
CAST(
N''
as nvarchar(max))
END
+
-------------------- USE TRANSACTION --------------------------------------------------------------------------------------------------
CAST(
CASE WHEN @UseTransaction = 1
THEN
@CR + N'COMMIT TRAN; '
+ @CR + N'END TRY'
+ @CR + N'BEGIN CATCH'
+ @CR + N' IF XACT_STATE() IN (-1,1)'
+ @CR + N' ROLLBACK TRAN;'
+ @CR + N''
+ @CR + N' SELECT ERROR_NUMBER() AS ErrorNumber '
+ @CR + N' ,ERROR_SEVERITY() AS ErrorSeverity '
+ @CR + N' ,ERROR_STATE() AS ErrorState '
+ @CR + N' ,ERROR_PROCEDURE() AS ErrorProcedure '
+ @CR + N' ,ERROR_LINE() AS ErrorLine '
+ @CR + N' ,ERROR_MESSAGE() AS ErrorMessage; '
+ @CR + N'END CATCH'
ELSE N'' END
as nvarchar(max))
--print is limited to 4000 chars, if necessary, I use multiple print
--to maintain the consistency of the script, I split near the closest CrLF to the max chunk size
DECLARE @i int = 1;
DECLARE @maxChunk integer = 3990;
DECLARE @len integer = @maxChunk;
WHILE @i < len(@SQL)
BEGIN
IF len(@SQL) > (@i + @len)
set @len = len(substring(@SQL, @i, @maxChunk)) - CHARINDEX(@CR, reverse(substring(@SQL, @i, @len))) + 1
PRINT substring(@SQL, @i, @len)
set @i = @i + @len
set @len = @maxChunk
END
--SELECT datalength(@SQL), @sql
--EXEC sys.sp_executesql @SQL
goto backFromCreateScript;
You need to fix the source of the string in the first place.
A string in .NET is actually just an array of 16-bit unicode code-points, characters, so a string isn't in any particular encoding.
It's when you take that string and convert it to a set of bytes that encoding comes into play.
In any case, the way you did it, encoded a string to a byte array with one character set, and then decoding it with another, will not work, as you see.
Can you tell us more about where that original string comes from, and why you think it has been encoded wrong?
I was just playing around with this, too. One way you can add extra weight is in the ORDER BY area of the code.
For example, if you were matching 3 different columns and wanted to more heavily weight certain columns:
SELECT search.*,
MATCH (name) AGAINST ('black' IN BOOLEAN MODE) AS name_match,
MATCH (keywords) AGAINST ('black' IN BOOLEAN MODE) AS keyword_match,
MATCH (description) AGAINST ('black' IN BOOLEAN MODE) AS description_match
FROM search
WHERE MATCH (name, keywords, description) AGAINST ('black' IN BOOLEAN MODE)
ORDER BY (name_match * 3 + keyword_match * 2 + description_match) DESC LIMIT 0,100;
It would help if you provided the error you are seeing. Look at http://docs.oracle.com/javase/7/docs/api/java/lang/Math.html and you will see that max only returns the max between two numbers, so likely you code is not even compiling.
Solve all your compilation errors first.
Then your homework will consist of finding the max of three numbers by comparing the first two together, and comparing that max result with the third value. You should have enough to find your answer now.
foreach ($basearr as &$row)
{
$row['value'] = $row['url'];
unset( $row['url'] );
}
unset($row);
To bulk git mv
files to lowercase on macOS:
for f in *; do git mv "$f" "`echo $f | tr "[:upper:]" "[:lower:]"`"; done
It will lowercase all files in a folder.
You can use ngModel
like
<input type="checkbox" [ngModel]="checkboxValue" (ngModelChange)="addProp($event)" data-md-icheck/>
To update the checkbox state by updating the property checkboxValue
in your code and when the checkbox is changed by the user addProp()
is called.
The first is a list, the second is a tuple. Lists are mutable, tuples are not.
Take a look at the Data Structures section of the tutorial, and the Sequence Types section of the documentation.
I want to know the time to brute force for when the password is a dictionary word and also when it is not a dictionary word.
Ballpark figure: there are about 1,000,000 English words, and if a hacker can compute about 10,000 SHA-512 hashes a second (update: see comment by CodesInChaos, this estimate is very low), 1,000,000 / 10,000 = 100 seconds. So it would take just over a minute to crack a single-word dictionary password for a single user. If the user concatenates two dictionary words, you're in the area of a few days, but still very possible if the attacker is cares enough. More than that and it starts getting tough.
If the password is a truly random sequence of alpha-numeric characters, upper and lower case, then the number of possible passwords of length N is 60^N (there are 60 possible characters). We'll do the calculation the other direction this time; we'll ask: What length of password could we crack given a specific length of time? Just use this formula:
N = Log60(t * 10,000)
where t is the time spent calculating hashes in seconds (again assuming 10,000 hashes a second).
1 minute: 3.2
5 minute: 3.6
30 minutes: 4.1
2 hours: 4.4
3 days: 5.2
So given a 3 days we'd be able to crack the password if it's 5 characters long.
This is all very ball-park, but you get the idea. Update: see comment below, it's actually possible to crack much longer passwords than this.
Let's clear up some misconceptions:
The salt doesn't make it slower to calculate hashes, it just means they have to crack each user's password individually, and pre-computed hash tables (buzz-word: rainbow tables) are made completely useless. If you don't have a precomputed hash-table, and you're only cracking one password hash, salting doesn't make any difference.
SHA-512 isn't designed to be hard to brute-force. Better hashing algorithms like BCrypt, PBKDF2 or SCrypt can be configured to take much longer to compute, and an average computer might only be able to compute 10-20 hashes a second. Read This excellent answer about password hashing if you haven't already.
update: As written in the comment by CodesInChaos, even high entropy passwords (around 10 characters) could be bruteforced if using the right hardware to calculate SHA-512 hashes.
The accepted answer as of September 2014 is incorrect and dangerously wrong:
In your case, breaking the hash algorithm is equivalent to finding a collision in the hash algorithm. That means you don't need to find the password itself (which would be a preimage attack)... Finding a collision using a birthday attack takes O(2^n/2) time, where n is the output length of the hash function in bits.
The birthday attack is completely irrelevant to cracking a given hash. And this is in fact a perfect example of a preimage attack. That formula and the next couple of paragraphs result in dangerously high and completely meaningless values for an attack time. As demonstrated above it's perfectly possible to crack salted dictionary passwords in minutes.
The low entropy of typical passwords makes it possible that there is a relatively high chance of one of your users using a password from a relatively small database of common passwords...
That's why generally hashing and salting alone is not enough, you need to install other safety mechanisms as well. You should use an artificially slowed down entropy-enducing method such as PBKDF2 described in PKCS#5...
Yes, please use an algorithm that is slow to compute, but what is "entropy-enducing"? Putting a low entropy password through a hash doesn't increase entropy. It should preserve entropy, but you can't make a rubbish password better with a hash, it doesn't work like that. A weak password put through PBKDF2 is still a weak password.
To add margins directly to items (some items allow direct editing of margins), you can do:
LayoutParams lp = ((ViewGroup) something).getLayoutParams();
if( lp instanceof MarginLayoutParams )
{
((MarginLayoutParams) lp).topMargin = ...;
((MarginLayoutParams) lp).leftMargin = ...;
//... etc
}
else
Log.e("MyApp", "Attempted to set the margins on a class that doesn't support margins: "+something.getClass().getName() );
...this works without needing to know about / edit the surrounding layout. Note the "instanceof" check in case you try and run this against something that doesn't support margins.
You can read the script line per line with a BufferedReader
and append every line to a StringBuilder
so that the script becomes one large string.
Then you can create a Statement
object using JDBC and call statement.execute(stringBuilder.toString())
.
The backslash \
is the line continuation character the error message is talking about, and after it, only newline characters/whitespace are allowed (before the next non-whitespace continues the "interrupted" line.
print "This is a very long string that doesn't fit" + \
"on a single line"
Outside of a string, a backslash can only appear in this way. For division, you want a slash: /
.
If you want to write a verbatim backslash in a string, escape it by doubling it: "\\"
In your code, you're using it twice:
print("Length between sides: " + str((length*length)*2.6) +
" \ 1.5 = " + # inside a string; treated as literal
str(((length*length)*2.6)\1.5)+ # outside a string, treated as line cont
# character, but no newline follows -> Fail
" Units")
If rather than having the watermark's visibility depend on the control's focus state, you want it to depend on whether the user has entered any text, you can update John Myczek's answer (from OnWatermarkChanged
down) to
static void OnWatermarkChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) {
var textbox = (TextBox)d;
textbox.Loaded += UpdateWatermark;
textbox.TextChanged += UpdateWatermark;
}
static void UpdateWatermark(object sender, RoutedEventArgs e) {
var textbox = (TextBox)sender;
var layer = AdornerLayer.GetAdornerLayer(textbox);
if (layer != null) {
if (textbox.Text == string.Empty) {
layer.Add(new WatermarkAdorner(textbox, GetWatermark(textbox)));
} else {
var adorners = layer.GetAdorners(textbox);
if (adorners == null) {
return;
}
foreach (var adorner in adorners) {
if (adorner is WatermarkAdorner) {
adorner.Visibility = Visibility.Hidden;
layer.Remove(adorner);
}
}
}
}
}
This makes more sense if your textbox gets focus automatically when displaying the form, or when databinding to the Text property.
Also if your watermark is always just a string, and you need the style of the watermark to match the style of the textbox, then in the Adorner do:
contentPresenter = new ContentPresenter {
Content = new TextBlock {
Text = (string)watermark,
Foreground = Control.Foreground,
Background = Control.Background,
FontFamily = Control.FontFamily,
FontSize = Control.FontSize,
...
},
...
}
// logout
if(isset($_GET['logout'])) {
session_destroy();
unset($_SESSION['username']);
header('location:login.php');
}
?>
The easiest way to think of this is imagine that there is a variable global to the entire application that is holding the current exception.
Exception currentException = null;
As each exception is thrown, "currentException" is set to that exception. When the application ends, if currentException is != null, then the runtime reports the error.
Also, the finally blocks always run before the method exits. You could then requite the code snippet to:
public class C1 {
public static void main(String [] argv) throws Exception {
try {
System.out.print(1);
q();
}
catch ( Exception i ) {
// <-- currentException = Exception, as thrown by q()'s finally block
throw( new MyExc2() ); // <-- currentException = MyExc2
}
finally {
// <-- currentException = MyExc2, thrown from main()'s catch block
System.out.print(2);
throw( new MyExc1() ); // <-- currentException = MyExc1
}
} // <-- At application exit, currentException = MyExc1, from main()'s finally block. Java now dumps that to the console.
static void q() throws Exception {
try {
throw( new MyExc1() ); // <-- currentException = MyExc1
}
catch( Exception y ) {
// <-- currentException = null, because the exception is caught and not rethrown
}
finally {
System.out.print(3);
throw( new Exception() ); // <-- currentException = Exception
}
}
}
The order in which the application executes is:
main()
{
try
q()
{
try
catch
finally
}
catch
finally
}
In case your git-bash
's PATH
presents but not latest and you don't want a reboot but regenerate your PATH
s, you can try the following:
cmd.exe
, powershell.exe
, and git-bash.exe
and reopen one cmd.exe window from the Start Menu or Desktop context.PATH
, you may also need to open one privileged cmd window.PATH
env is updated. Please note that the terminal in IntelliJ IDEA is probably a login shell or some other kind of magic, so PATH
in it may won't change until you restart IDEA.Windows Explorer
process as well and retry the steps above.Note: This doesn't work with all Windows versions, and open cmd.exe
anywhere other than the Start Menu or Desktop context menu may not work, tested with my 4 computers and 3 of them works. I didn't figure out why this works, but since the PATH
environment variable is generated automatically when I login and logout, I'd not to mess up that variable with variable concatenation.
Answering normajeans' question about setting default value. Create a defaults object with same properties and merge with the arguments object
If using ES6:
function yourFunction(args){
let defaults = {opt1: true, opt2: 'something'};
let params = {...defaults, ...args}; // right-most object overwrites
console.log(params.opt1);
}
Older Browsers using Object.assign(target, source):
function yourFunction(args){
var defaults = {opt1: true, opt2: 'something'};
var params = Object.assign(defaults, args) // args overwrites as it is source
console.log(params.opt1);
}
If you need that in js code. You can use injected method of angula-filter lib. Like this.
function controller($scope, $http, groupByFilter) {
var groupedData = groupByFilter(originalArray, 'groupPropName');
}
https://github.com/a8m/angular-filter/wiki/Common-Questions#inject-filters
The user agent string is a text that the browsers themselves send to the webserver to identify themselves, so that websites can send different content based on the browser or based on browser compatibility.
Mozilla is a browser rendering engine (the one at the core of Firefox) and the fact that Chrome and IE contain the string Mozilla/4 or /5 identifies them as being compatible with that rendering engine.
The syntax is
EXEC mySchema.myPackage.myProcedure@myRemoteDB( 'someParameter' );
Doesn't need to. RequestMapping annotation supports wildcards and ant-style paths. Also looks like you just want a default view, so you can put
<mvc:view-controller path="/" view-name="welcome"/>
in your config file. That will forward all requests to the Root to the welcome view.
you can try this
ts_create
TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
ts_update
TIMESTAMP DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
Try a regular expression like this:
(?=[^\0])(?=^([0-9]+){0,1}(\.[0-9]{1,2}){0,1}$)
Allowed: 1, 10.8, 10.89, .89, 0.89, 1000
Not Allowed: 20. , 50.89.9, 12.999, ., Null character Note this works for positive numbers
Browsers control a lot of this functionality but
<a href="http://www.yahoo.com" target="_blank">Go to Yahoo</a>
will attempt to open yahoo.com in a new window.
Make sure your escaping the HTML characters
E.g.
// Always check an input variable is set before you use it
if (isset($_POST['contact_list'])) {
// Escape any html characters
echo htmlentities($_POST['contact_list']);
}
This would occur because of the angle brackets and the browser thinking they are tags.
You can open up terminal and simply type
java -version // this will check your jre version
javac -version // this will check your java compiler version if you installed
this should show you the version of java installed on the system (assuming that you have set the path of the java in system environment).
And if you haven't, add it via
export JAVA_HOME=/path/to/java/jdk1.x
and if you unsure if you have java at all on your system just use find
in terminal
i.e. find / -name "java"
You can use:
if (parentGuest.nextSibling) {
parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);
}
else {
parentGuest.parentNode.appendChild(childGuest);
}
But as Pavel pointed out, the referenceElement can be null/undefined, and if so, insertBefore behaves just like appendChild. So the following is equivalent to the above:
parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);
So from the android developer site on Data Storage:
User Preferences
Shared preferences are not strictly for saving "user preferences," such as what ringtone a user has chosen. If you're interested in creating user preferences for your application, see PreferenceActivity, which provides an Activity framework for you to create user preferences, which will be automatically persisted (using shared preferences).
So I think it is okay since it is simply just key-value pairs which are persisted.
To the original poster, this is not that hard. You simply just iterate through your array list and add the items. In this example I use a map for simplicity but you can use an array list and change it appropriately:
// my list of names, icon locations
Map<String, String> nameIcons = new HashMap<String, String>();
nameIcons.put("Noel", "/location/to/noel/icon.png");
nameIcons.put("Bob", "another/location/to/bob/icon.png");
nameIcons.put("another name", "last/location/icon.png");
SharedPreferences keyValues = getContext().getSharedPreferences("name_icons_list", Context.MODE_PRIVATE);
SharedPreferences.Editor keyValuesEditor = keyValues.edit();
for (String s : nameIcons.keySet()) {
// use the name as the key, and the icon as the value
keyValuesEditor.putString(s, nameIcons.get(s));
}
keyValuesEditor.commit()
You would do something similar to read the key-value pairs again. Let me know if this works.
Update: If you're using API level 11 or later, there is a method to write out a String Set
Cannot be done with pure batch.Check the shortcutJS.bat - it is a jscript/bat
hybrid and should be used with .bat
extension:
call shortcutJS.bat -linkfile "%~n0.lnk" -target "%~f0" -linkarguments "some arguments"
With -help
you can check the other options (you can set icon , admin permissions and etc.)
Seeing that it appears you are running using the SQL syntax, try with the correct wild card.
SELECT * FROM someTable WHERE (someTable.Field NOT LIKE '%RISK%') AND (someTable.Field NOT LIKE '%Blah%') AND someTable.SomeOtherField <> 4;
In PHP:
function cloneDatabase($dbName, $newDbName){
global $admin;
$db_check = @mysql_select_db ( $dbName );
$getTables = $admin->query("SHOW TABLES");
$tables = array();
while($row = mysql_fetch_row($getTables)){
$tables[] = $row[0];
}
$createTable = mysql_query("CREATE DATABASE `$newDbName` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;") or die(mysql_error());
foreach($tables as $cTable){
$db_check = @mysql_select_db ( $newDbName );
$create = $admin->query("CREATE TABLE $cTable LIKE ".$dbName.".".$cTable);
if(!$create) {
$error = true;
}
$insert = $admin->query("INSERT INTO $cTable SELECT * FROM ".$dbName.".".$cTable);
}
return !isset($error);
}
// usage
$clone = cloneDatabase('dbname','newdbname'); // first: toCopy, second: new database
Accordingly to W3C checked input's attribute can be absent/ommited or have "checked" as its value. This does not invalidate other values because there's no restriction to the browser implementation to allow values like "true", "on", "yes" and so on. To guarantee that you'll write a cross-browser checkbox/radio use checked="checked", as recommended by W3C.
disabled, readonly and ismap input's attributes go on the same way.
EDITED
empty is not a valid value for checked, disabled, readonly and ismap input's attributes, as warned by @Quentin
For those using sdkman
, this helped me.
Use Case:
I was using identifier 8.0.202-amzn
I decided to install Azul Zulu as follows: sdk install java 13.0.2-zulu
Error:
And then i got this unbound error.
Solution:
1. Right-click on your project in Eclipse
/STS
2. Choose Build Path
> Configure Build Path...
3. Under Libraries, remove the JRE Library, for my case 8.0.202-amzn
4. Under Libraries, click on Modulepath
> Add Library...
5. Choose JRE System Library
, click Next
6. Choose Alternate JRE
, click on Installed JREs...
7. Your previous configured value should be there
8. If it is there, edit it, if it is not there, add one
9. Make sure the name
is: 13.0.2-zulu
10. And the location
(JRE home) is: /Users/jumping_monkey/.sdkman/candidates/java/current
11. Click Apply and close
12. Click Finish
13. Voila!
You will see JRE System Library [13.0.2-zulu] in your Project Explorer and all errors gone
Bravo!
The only way I've seen it done is if you do this:
for /f "delims=" %a in ('ver') do @set foobar=%a
ver
is the version command for Windows and on my system it produces:
Microsoft Windows [Version 6.0.6001]
You can use:
input[type=text]
{
/*Styles*/
}
Define your common style attributes inside this. and for extra style you can add a class then.
Try this one
.responsive-container{
display:table;
}
.img-container{
display:table-cell;
vertical-align: middle;
}
If changing the post_max_size settings from XAMPP
folders. It did not work for you try this.
From XAMPP
control panel, click config then PHP (php.ini)
and edit post_max_size
and upload_max_filesize
to a higher number in this file instead. Stop Apache server. Start Apache server. This worked for me.
I think you've missed the point of access control.
A quick recap on why CORS exists: Since JS code from a website can execute XHR, that site could potentially send requests to other sites, masquerading as you and exploiting the trust those sites have in you(e.g. if you have logged in, a malicious site could attempt to extract information or execute actions you never wanted) - this is called a CSRF attack. To prevent that, web browsers have very stringent limitations on what XHR you can send - you are generally limited to just your domain, and so on.
Now, sometimes it's useful for a site to allow other sites to contact it - sites that provide APIs or services, like the one you're trying to access, would be prime candidates. CORS was developed to allow site A(e.g. paste.ee
) to say "I trust site B, so you can send XHR from it to me". This is specified by site A sending "Access-Control-Allow-Origin" headers in its responses.
In your specific case, it seems that paste.ee
doesn't bother to use CORS. Your best bet is to contact the site owner and find out why, if you want to use paste.ee with a browser script. Alternatively, you could try using an extension(those should have higher XHR privileges).
Just for the record, in C++, if you can use either (i.e.) you don't care about the ordering of operations (you just want to increment or decrement and use it later) the prefix operator is more efficient since it doesn't have to create a temporary copy of the object. Unfortunately, most people use posfix (var++) instead of prefix (++var), just because that is what we learned initially. (I was asked about this in an interview). Not sure if this is true in C#, but I assume it would be.
this syntax :
SELECT *
FROM tbl_directorylisting listing
WHERE (civilite_etudiant IS NULL)
worked for me in Microsoft SQL Server 2008 (SP3)
public IList<Splitting> get(Guid companyId, long customrId) {
var res=from c in Customers_data_source
where c.CustomerId = customrId && c.CompanyID == companyId
from s in Splittings_data_srouce
where s.CustomerID = c.CustomerID
select s;
return res.ToList();
}
I ran into this problem recently and wrote up a post about the particular case in our code that was causing this problem.
http://cappuccino.org/discuss/2010/03/01/internet-explorer-global-variables-and-stack-overflows/
The quick summary is: recursion that passes through the host global object is limited to a stack depth of 13. In other words, if the reference your function call is using (not necessarily the function itself) was defined with some form window.foo = function, then recursing through foo is limited to a depth of 13.
Use cURL
,
Check if you have it via phpinfo();
And for the code:
function getHtml($url, $post = null) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
if(!empty($post)) {
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
}
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
Here's my PEG(.js) grammar that seems to do ok at RFC 4180 (i.e. it handles the examples at http://en.wikipedia.org/wiki/Comma-separated_values):
start
= [\n\r]* first:line rest:([\n\r]+ data:line { return data; })* [\n\r]* { rest.unshift(first); return rest; }
line
= first:field rest:("," text:field { return text; })*
& { return !!first || rest.length; } // ignore blank lines
{ rest.unshift(first); return rest; }
field
= '"' text:char* '"' { return text.join(''); }
/ text:[^\n\r,]* { return text.join(''); }
char
= '"' '"' { return '"'; }
/ [^"]
Try it out at http://jsfiddle.net/knvzk/10 or http://pegjs.majda.cz/online. Download the generated parser at https://gist.github.com/3362830.
Check constraints are supported as of version 8.0.15 (yet to be released)
https://bugs.mysql.com/bug.php?id=3464
[23 Jan 16:24] Paul Dubois
Posted by developer: Fixed in 8.0.15.
Previously, MySQL permitted a limited form of CHECK constraint syntax, but parsed and ignored it. MySQL now implements the core features of table and column CHECK constraints, for all storage engines. Constraints are defined using CREATE TABLE and ALTER TABLE statements.
If all you want is use one numeric type, you could consider creating something similar to an alias in C++ with using
.
So instead of having the very generic
T ComputeSomething<T>(T value1, T value2) where T : INumeric { ... }
you could have
using MyNumType = System.Double;
T ComputeSomething<MyNumType>(MyNumType value1, MyNumType value2) { ... }
That might allow you to easily go from double
to int
or others if needed, but you wouldn't be able to use ComputeSomething
with double
and int
in the same program.
But why not replace all double
to int
then? Because your method may want to use a double
whether the input is double
or int
. The alias allows you to know exactly which variable uses the dynamic type.
You are assigning to a function call:
invest(initial_amount,top_company(5,year,year+1)) = subsequent_amount
which is illegal in Python. The question is, what do you want to do? What does invest()
do? I suppose it returns a value, namely what you're trying to use as subsequent_amount
, right?
If so, then something like this should work:
amount = invest(amount,top_company(5,year,year+1),year)
SELECT word, COUNT(*) FROM words GROUP by word HAVING COUNT(*) > 1
This is the trick you can go with.
<input type="radio" name="name" onclick="this.checked = false;" />
It has the last status code (exit value) of a command.
An absolute xpath in HTML DOM starts with /html e.g.
/html/body/div[5]/div[2]/div/div[2]/div[2]/h2[1]
and a relative xpath finds the closed id to the dom element and generates xpath starting from that element e.g.
.//*[@id='answers']/h2[1]/a[1]
You can use firepath (firebug) for generating both types of xpaths
It won't make any difference which xpath you use in selenium, the former may be faster than the later one (but it won't be observable)
Absolute xpaths are prone to more regression as slight change in DOM makes them invalid or refer to a wrong element
I ended up just downloading my pdf using below code
function downloadPdfDocument(fileName){
var req = new XMLHttpRequest();
req.open("POST", "/pdf/" + fileName, true);
req.responseType = "blob";
fileName += "_" + new Date() + ".pdf";
req.onload = function (event) {
var blob = req.response;
//for IE
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
var link = document.createElement('a');
link.href = window.URL.createObjectURL(blob);
link.download = fileName;
link.click();
}
};
req.send();
}
One can use the Jackson library as well.
Add Maven Dependency:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
Simply do this:
ObjectMapper mapper = new ObjectMapper();
String json = mapper.writeValueAsString( serializableObject );
One of the pitfalls as I know is IE problem with custom elements. As quoted from the docs:
3) you do not use custom element tags such as (use the attribute version instead)
4) if you do use custom element tags, then you must take these steps to make IE 8 and below happy
<!doctype html>
<html xmlns:ng="http://angularjs.org" id="ng-app" ng-app="optionalModuleName">
<head>
<!--[if lte IE 8]>
<script>
document.createElement('ng-include');
document.createElement('ng-pluralize');
document.createElement('ng-view');
// Optionally these for CSS
document.createElement('ng:include');
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One option is to use do.call()
:
> do.call(rbind, a)
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1 1 2 3 4 5
[2,] 2 1 2 3 4 5
[3,] 3 1 2 3 4 5
[4,] 4 1 2 3 4 5
[5,] 5 1 2 3 4 5
[6,] 6 1 2 3 4 5
[7,] 7 1 2 3 4 5
[8,] 8 1 2 3 4 5
[9,] 9 1 2 3 4 5
[10,] 10 1 2 3 4 5
Although this is an old document, but it helped me resolve the problem of 'HintPath' being ignored on another machine. It was because the referenced DLL needed to be in source control as well:
Excerpt:
To include and then reference an outer-system assembly 1. In Solution Explorer, right-click the project that needs to reference the assembly,,and then click Add Existing Item. 2. Browse to the assembly, and then click OK. The assembly is then copied into the project folder and automatically added to VSS (assuming the project is already under source control). 3. Use the Browse button in the Add Reference dialog box to set a file reference to assembly in the project folder.
Another aspect worth mentioning:
JDK (java development kit)
You will need it for development purposes like the name suggests.
For example: a software company will have JDK install in their computer because they will need to develop new software which involves compiling and running their Java programs as well.
So we can say that JDK = JRE + JVM.
JRE (java run-time environment)
It's needed to run Java programs. You can't compile Java programs with it .
For example: a regular computer user who wants to run some online games then will need JRE in his system to run Java programs.
JVM (java virtual machine)
As you might know it run the bytecodes. It make Java platform independent because it executes the .class
file which you get after you compile the Java program regardless of whether you compile it on Windows, Mac or Linux.
Open JDK
Well, like I said above. Now JDK is made by different company, one of them which happens to be an open source and free for public use is OpenJDK, while some others are Oracle Corporation's JRockit JDK or IBM JDK.
However they all might appear the same to general user.
Conclusion
If you are a Java programmer you will need JDK in your system and this package will include JRE and JVM as well but if you are normal user who like to play online games then you will only need JRE and this package will not have JDK in it.
In other words JDK is grandfather JRE is father and JVM is their son.
Error 4 means "The cause was a user-mode read resulting in no page being found.". There's a tool that decodes it here.
Here's the definition from the kernel. Keep in mind that 4 means that bit 2 is set and no other bits are set. If you convert it to binary that becomes clear.
/*
* Page fault error code bits
* bit 0 == 0 means no page found, 1 means protection fault
* bit 1 == 0 means read, 1 means write
* bit 2 == 0 means kernel, 1 means user-mode
* bit 3 == 1 means use of reserved bit detected
* bit 4 == 1 means fault was an instruction fetch
*/
#define PF_PROT (1<<0)
#define PF_WRITE (1<<1)
#define PF_USER (1<<2)
#define PF_RSVD (1<<3)
#define PF_INSTR (1<<4)
Now then, "ip 00007f9bebcca90d" means the instruction pointer was at 0x00007f9bebcca90d when the segfault happened.
"libQtWebKit.so.4.5.2[7f9beb83a000+f6f000]" tells you:
If you take the base address and subtract it from the ip, you get the offset into that object:
0x00007f9bebcca90d - 0x7f9beb83a000 = 0x49090D
Then you can run addr2line on it:
addr2line -e /usr/lib64/qt45/lib/libQtWebKit.so.4.5.2 -fCi 0x49090D
??
??:0
In my case it wasn't successful, either the copy I installed isn't identical to yours, or it's stripped.
Depends on the length.. If the varchar will be 20 characters, and the int is 4, then if you use an int, your index will have FIVE times as many nodes per page of index space on disk... That means that traversing the index will require one fifth as many physical and/or logical reads..
So, if performance is an issue, given the opportunity, always use an integral non-meaningful key (called a surrogate) for your tables, and for Foreign Keys that reference the rows in these tables...
At the same time, to guarantee data consistency, every table where it matters should also have a meaningful non-numeric alternate key, (or unique Index) to ensure that duplicate rows cannot be inserted (duplicate based on meaningful table attributes) .
For the specific use you are talking about (like state lookups ) it really doesn't matter because the size of the table is so small.. In general there is no impact on performance from indices on tables with less than a few thousand rows...
The first thing you must know is that indexes are a way to avoid scanning the full table to obtain the result that you're looking for.
There are different kinds of indexes and they're implemented in the storage layer, so there's no standard between them and they also depend on the storage engine that you're using.
For InnoDB, the most common index type is the B+Tree based index, that stores the elements in a sorted order. Also, you don't have to access the real table to get the indexed values, which makes your query return way faster.
The "problem" about this index type is that you have to query for the leftmost value to use the index. So, if your index has two columns, say last_name and first_name, the order that you query these fields matters a lot.
So, given the following table:
CREATE TABLE person (
last_name VARCHAR(50) NOT NULL,
first_name VARCHAR(50) NOT NULL,
INDEX (last_name, first_name)
);
This query would take advantage of the index:
SELECT last_name, first_name FROM person
WHERE last_name = "John" AND first_name LIKE "J%"
But the following one would not
SELECT last_name, first_name FROM person WHERE first_name = "Constantine"
Because you're querying the first_name
column first and it's not the leftmost column in the index.
This last example is even worse:
SELECT last_name, first_name FROM person WHERE first_name LIKE "%Constantine"
Because now, you're comparing the rightmost part of the rightmost field in the index.
This is a different index type that unfortunately, only the memory backend supports. It's lightning fast but only useful for full lookups, which means that you can't use it for operations like >
, <
or LIKE
.
Since it only works for the memory backend, you probably won't use it very often. The main case I can think of right now is the one that you create a temporary table in the memory with a set of results from another select and perform a lot of other selects in this temporary table using hash indexes.
If you have a big VARCHAR
field, you can "emulate" the use of a hash index when using a B-Tree, by creating another column and saving a hash of the big value on it. Let's say you're storing a url in a field and the values are quite big. You could also create an integer field called url_hash
and use a hash function like CRC32
or any other hash function to hash the url when inserting it. And then, when you need to query for this value, you can do something like this:
SELECT url FROM url_table WHERE url_hash=CRC32("http://gnu.org");
The problem with the above example is that since the CRC32
function generates a quite small hash, you'll end up with a lot of collisions in the hashed values. If you need exact values, you can fix this problem by doing the following:
SELECT url FROM url_table
WHERE url_hash=CRC32("http://gnu.org") AND url="http://gnu.org";
It's still worth to hash things even if the collision number is high cause you'll only perform the second comparison (the string one) against the repeated hashes.
Unfortunately, using this technique, you still need to hit the table to compare the url
field.
Some facts that you may consider every time you want to talk about optimization:
Integer comparison is way faster than string comparison. It can be illustrated with the example about the emulation of the hash index in InnoDB
.
Maybe, adding additional steps in a process makes it faster, not slower. It can be illustrated by the fact that you can optimize a SELECT
by splitting it into two steps, making the first one store values in a newly created in-memory table, and then execute the heavier queries on this second table.
MySQL has other indexes too, but I think the B+Tree one is the most used ever and the hash one is a good thing to know, but you can find the other ones in the MySQL documentation.
I highly recommend you to read the "High Performance MySQL" book, the answer above was definitely based on its chapter about indexes.
Caveat: you can't prevent users from pirating, but only make it easier for honest users to do the right thing.
Assuming you don't want to do a special build for each user, then:
But, I repeat: this won't prevent piracy
I have recently read that this approach is not cryptographically very sound. But this solution is already weak (as the software itself has to include the secret key somewhere), so I don't think this discovery invalidates the solution as far as it goes.
Just thought I really ought to mention this, though; if you're planning to derive something else from this, beware.
Call the continuation with TaskScheduler.FromCurrentSynchronizationContext()
:
Task UITask= task.ContinueWith(() =>
{
this.TextBlock1.Text = "Complete";
}, TaskScheduler.FromCurrentSynchronizationContext());
This is suitable only if the current execution context is on the UI thread.
Have a look at my primer on exactly this topic.
UPDATE:
var sio = require('socket.io'),
app = require('express').createServer();
app.listen(8080);
sio = sio.listen(app);
sio.on('connection', function (client) {
console.log('client connected');
// send the clients id to the client itself.
client.send(client.id);
client.on('disconnect', function () {
console.log('client disconnected');
});
});
Those who prefer to use laravel helpers they can check if a request is ajax using laravel request()
helper.
if(request()->ajax())
// code
I guess you could open a popup window and call that a dialog box. I'm unsure of the details, but I'm pretty sure you can close a window programmatically that you opened from javascript. Would this suffice?
add the following section and change :
Options Indexes FollowSymLinks MultiViews AllowOverride all Order Deny,Allow Allow from all
change directory to your directory path like c:\wamp\www\projectfolder
make sure you make the same in httpd.conf for all directory like first directory:
Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all
second directory:
<Directory "c:/wamp/www/">
#
# Possible values for the Options directive are "None", "All",
# or any combination of:
# Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
#
# Note that "MultiViews" must be named *explicitly* --- "Options All"
# doesn't give it to you.
#
# The Options directive is both complicated and important. Please see
# http://httpd.apache.org/docs/2.0/mod/core.html#options
# for more information.
#
Options Indexes FollowSymLinks
#
# AllowOverride controls what directives may be placed in .htaccess files.
# It can be "All", "None", or any combination of the keywords:
# Options FileInfo AuthConfig Limit
#
AllowOverride all
#
# Controls who can get stuff from this server.
#
# onlineoffline tag - don't remove
Order Deny,Allow
Allow from all
</Directory>
<Directory "icons">
Options Indexes MultiViews
AllowOverride None
Order allow,deny
Allow from all
</Directory>
Many thanks for bernie's answer! Had to tweak it a bit - here's what worked for me:
import csv, sqlite3
conn = sqlite3.connect("pcfc.sl3")
curs = conn.cursor()
curs.execute("CREATE TABLE PCFC (id INTEGER PRIMARY KEY, type INTEGER, term TEXT, definition TEXT);")
reader = csv.reader(open('PC.txt', 'r'), delimiter='|')
for row in reader:
to_db = [unicode(row[0], "utf8"), unicode(row[1], "utf8"), unicode(row[2], "utf8")]
curs.execute("INSERT INTO PCFC (type, term, definition) VALUES (?, ?, ?);", to_db)
conn.commit()
My text file (PC.txt) looks like this:
1 | Term 1 | Definition 1
2 | Term 2 | Definition 2
3 | Term 3 | Definition 3
You can use a special designated object as the null object in case of references as follows:
class SomeClass
{
public:
int operator==(SomeClass &object)
{
if(this == &object)
{
return true;
}
return false;
}
static SomeClass NullObject;
};
SomeClass SomeClass::NullObject;
void print(SomeClass &val)
{
if(val == SomeClass::NullObject)
{
printf("\nNULL");
}
else
{
printf("\nNOT NULL");
}
}
EOF is -1 because that's how it's defined. The name is provided by the standard library headers that you #include
. They make it equal to -1 because it has to be something that can't be mistaken for an actual byte read by getchar()
. getchar()
reports the values of actual bytes using positive number (0 up to 255 inclusive), so -1 works fine for this.
The !=
operator means "not equal". 0 stands for false, and anything else stands for true. So what happens is, we call the getchar()
function, and compare the result to -1 (EOF). If the result was not equal to EOF, then the result is true, because things that are not equal are not equal. If the result was equal to EOF, then the result is false, because things that are equal are not (not equal).
The call to getchar()
returns EOF when you reach the "end of file". As far as C is concerned, the 'standard input' (the data you are giving to your program by typing in the command window) is just like a file. Of course, you can always type more, so you need an explicit way to say "I'm done". On Windows systems, this is control-Z. On Unix systems, this is control-D.
The example in the book is not "wrong". It depends on what you actually want to do. Reading until EOF means that you read everything, until the user says "I'm done", and then you can't read any more. Reading until '\n' means that you read a line of input. Reading until '\0' is a bad idea if you expect the user to type the input, because it is either hard or impossible to produce this byte with a keyboard at the command prompt :)
Try this code:
$('.Classname').click(function(){
$("html, body").animate({ scrollTop: 0 }, 600);
return false;
});
I found that I have ticked "Run whether user is logged on or not" and it returns a silent failure.
When I changed tick "Run only when user is logged on" instead it works for me.
You might want to try the very new and simple CSS3 feature:
img {
object-fit: contain;
}
It preserves the picture ratio (as when you use the background-picture trick), and in my case worked nicely for the same issue.
Be careful though, it is not supported by IE (see support details here).
Use the debugging tools supported by the browser. As mentioned above Firebug for Firefox Chrome Developer Tools from Chrome IE Developer for IE.
That way you can detect cross-browser issues. To help reduce the cross-browser issues, use a javascript framework ie jQuery, YUI, moo tools, etc.
Below is a screenshot (javascript-debug.png) of what it looks lime in Firebug.
1) hit 'F12'
2) click the 'Script' tab and 'enable it' (if you are already on your page - hit 'F5' to re-load)
3) next to the 'All' drop down, there will be another dropdown to the right. Select your javascript file from that dropdown.
In the screenshot, I've set a break-point at line 42 by 'left-mouse-click'. This will enable you to break, inspect, watch, etc.
To get the new Microsoft Edge based on a Mozilla core add:
else if ((verOffset=nAgt.indexOf("Edg"))!=-1) {
browserName = "Microsoft Edge";
fullVersion = nAgt.substring(verOffset+5);
}
before
// In Chrome, the true version is after "Chrome"
else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {
browserName = "Chrome";
fullVersion = nAgt.substring(verOffset+7);
}
The accepted answer gives you the number of GPUs but it also allocates all the memory on those GPUs. You can avoid this by creating a session with fixed lower memory before calling device_lib.list_local_devices() which may be unwanted for some applications.
I ended up using nvidia-smi to get the number of GPUs without allocating any memory on them.
import subprocess
n = str(subprocess.check_output(["nvidia-smi", "-L"])).count('UUID')
I wanted to parse 'command.json' inside src/main//js/Simulator.java. For that I copied json file in src folder and gave the absolute path like this :
Object obj = parser.parse(new FileReader("./src/command.json"));
Simplest solution here:
How to set bootstrap navbar active class with Angular JS?
Which is:
Use ng-controller to run a single controller outside of the ng-view:
<div class="collapse navbar-collapse" ng-controller="HeaderController">
<ul class="nav navbar-nav">
<li ng-class="{ active: isActive('/')}"><a href="/">Home</a></li>
<li ng-class="{ active: isActive('/dogs')}"><a href="/dogs">Dogs</a></li>
<li ng-class="{ active: isActive('/cats')}"><a href="/cats">Cats</a></li>
</ul>
</div>
<div ng-view></div>
and include in controllers.js:
function HeaderController($scope, $location)
{
$scope.isActive = function (viewLocation) {
return viewLocation === $location.path();
};
}
In general, in C++ functions have to be declared before you call them. So sometime before the definition of getSkewNormal()
, the compiler needs to see the declaration:
double integrate (double start, double stop, int numSteps, Evaluatable evalObj);
Mostly what people do is put all the declarations (only) in the header file, and put the actual code -- the definitions of the functions and methods -- into a separate source (*.cc
or *.cpp
) file. This neatly solves the problem of needing all the functions to be declared.
One option is to put the character literally in your script, e.g.:
const omega = 'O';
This requires that you let the browser know the correct source encoding, see Unicode in JavaScript
However, if you can't or don't want to do this (e.g. because the character is too exotic and can't be expected to be available in the code editor font), the safest option may be to use new-style string escape or String.fromCodePoint
:
const omega = '\u{3a9}';
// or:
const omega = String.fromCodePoint(0x3a9);
This is not restricted to UTF-16 but works for all unicode code points. In comparison, the other approaches mentioned here have the following downsides:
const omega = 'Ω';
): only work when rendered unescaped in an HTML elementconst omega = '\u03A9';
): restricted to UTF-16String.fromCharCode
: restricted to UTF-16Here is how you can do it with a socket on php-fpm 7
install socat
apt-get install socat
#!/bin/sh
if echo /dev/null | socat UNIX:/var/run/php/php7.0-fpm.sock - ; then
echo "$home/run/php-fpm.sock connect OK"
else
echo "$home/run/php-fpm.sock connect ERROR"
fi
You can also check if the service is running like this.
service php7.0-fpm status | grep running
It will return
Active: active (running) since Sun 2017-04-09 12:48:09 PDT; 48s ago
Isn't it smoother to make a method to be called after the creation of the EditText unit in an AlertDialog, for general use?
public static void EditTextListPicker(final Activity activity, final EditText EditTextItem, final String SelectTitle, final String[] SelectList) {
EditTextItem.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setTitle(SelectTitle);
builder.setItems(SelectList, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int item) {
EditTextItem.setText(SelectList[item]);
}
});
builder.create().show();
return false;
}
});
}
if duplicate and ordering items are problem :
[i for i in a if not i in b or b.remove(i)]
a = [1,2,3,3,3,3,4]
b = [1,3]
result: [2, 3, 3, 3, 4]
Test if the DUALCASE variable exists:
el@apollo:~$ env | grep DUALCASE
el@apollo:~$
It does not, so create the variable and export it:
el@apollo:~$ DUALCASE=1
el@apollo:~$ export DUALCASE
Check if it is there:
el@apollo:~$ env | grep DUALCASE
DUALCASE=1
It is there. So get rid of it:
el@apollo:~$ unset DUALCASE
Check if it's still there:
el@apollo:~$ env | grep DUALCASE
el@apollo:~$
The DUALCASE exported environment variable is deleted.
Unset all local variables back to default on login:
el@apollo:~$ CAN="chuck norris"
el@apollo:~$ set | grep CAN
CAN='chuck norris'
el@apollo:~$ env | grep CAN
el@apollo:~$
el@apollo:~$ exec bash
el@apollo:~$ set | grep CAN
el@apollo:~$ env | grep CAN
el@apollo:~$
exec bash
command cleared all the local variables but not environment variables.
Unset all environment variables back to default on login:
el@apollo:~$ export DOGE="so wow"
el@apollo:~$ env | grep DOGE
DOGE=so wow
el@apollo:~$ env -i bash
el@apollo:~$ env | grep DOGE
el@apollo:~$
env -i bash
command cleared all the environment variables to default on login.
@Shane Arney
performSelector:withObject:withObject:
You might also want to mention that this method is only for passing maximum 2 arguments, and it cannot be delayed. (such as performSelector:withObject:afterDelay:)
.
kinda weird that apple only supports 2 objects to be send and didnt make it more generic.
My simple solution is to style hr with css to have zero top & bottom margins, zero border, 1 pixel height and contrasting background color. This can be done by setting the style directly or by defining a class, for example, like:
.thin_hr {
margin-top:0;
margin-bottom:0;
border:0;
height:1px;
background-color:black;
}
Hide scroll bar, but while still being able to scroll using CSS
To hide the scrollbar use -webkit- because it is supported by major browsers (Google Chrome, Safari or newer versions of Opera). There are many other options for the other browsers which are listed below:
-webkit- (Chrome, Safari, newer versions of Opera):
.element::-webkit-scrollbar { width: 0 !important }
-moz- (Firefox):
.element { overflow: -moz-scrollbars-none; }
-ms- (Internet Explorer +10):
.element { -ms-overflow-style: none; }
ref: https://www.geeksforgeeks.org/hide-scroll-bar-but-while-still-being-able-to-scroll-using-css/
C++ Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for C++11) Coming at 1k pages, this is a very thorough introduction into C++ that covers just about everything in the language in a very accessible format and in great detail. The fifth edition (released August 16, 2012) covers C++11. [Review]
* Not to be confused with C++ Primer Plus (Stephen Prata), with a significantly less favorable review.
Programming: Principles and Practice Using C++ (Bjarne Stroustrup, 2nd Edition - May 25, 2014) (updated for C++11/C++14) An introduction to programming using C++ by the creator of the language. A good read, that assumes no previous programming experience, but is not only for beginners.
A Tour of C++ (Bjarne Stroustrup) (2nd edition for C++17) The “tour” is a quick (about 180 pages and 14 chapters) tutorial overview of all of standard C++ (language and standard library, and using C++11) at a moderately high level for people who already know C++ or at least are experienced programmers. This book is an extended version of the material that constitutes Chapters 2-5 of The C++ Programming Language, 4th edition.
Accelerated C++ (Andrew Koenig and Barbara Moo, 1st Edition - August 24, 2000) This basically covers the same ground as the C++ Primer, but does so on a fourth of its space. This is largely because it does not attempt to be an introduction to programming, but an introduction to C++ for people who've previously programmed in some other language. It has a steeper learning curve, but, for those who can cope with this, it is a very compact introduction to the language. (Historically, it broke new ground by being the first beginner's book to use a modern approach to teaching the language.) Despite this, the C++ it teaches is purely C++98. [Review]
Effective C++ (Scott Meyers, 3rd Edition - May 22, 2005) This was written with the aim of being the best second book C++ programmers should read, and it succeeded. Earlier editions were aimed at programmers coming from C, the third edition changes this and targets programmers coming from languages like Java. It presents ~50 easy-to-remember rules of thumb along with their rationale in a very accessible (and enjoyable) style. For C++11 and C++14 the examples and a few issues are outdated and Effective Modern C++ should be preferred. [Review]
Effective Modern C++ (Scott Meyers) This is basically the new version of Effective C++, aimed at C++ programmers making the transition from C++03 to C++11 and C++14.
Effective STL (Scott Meyers) This aims to do the same to the part of the standard library coming from the STL what Effective C++ did to the language as a whole: It presents rules of thumb along with their rationale. [Review]
More Effective C++ (Scott Meyers) Even more rules of thumb than Effective C++. Not as important as the ones in the first book, but still good to know.
Exceptional C++ (Herb Sutter) Presented as a set of puzzles, this has one of the best and thorough discussions of the proper resource management and exception safety in C++ through Resource Acquisition is Initialization (RAII) in addition to in-depth coverage of a variety of other topics including the pimpl idiom, name lookup, good class design, and the C++ memory model. [Review]
More Exceptional C++ (Herb Sutter) Covers additional exception safety topics not covered in Exceptional C++, in addition to discussion of effective object-oriented programming in C++ and correct use of the STL. [Review]
Exceptional C++ Style (Herb Sutter) Discusses generic programming, optimization, and resource management; this book also has an excellent exposition of how to write modular code in C++ by using non-member functions and the single responsibility principle. [Review]
C++ Coding Standards (Herb Sutter and Andrei Alexandrescu) “Coding standards” here doesn't mean “how many spaces should I indent my code?” This book contains 101 best practices, idioms, and common pitfalls that can help you to write correct, understandable, and efficient C++ code. [Review]
C++ Templates: The Complete Guide (David Vandevoorde and Nicolai M. Josuttis) This is the book about templates as they existed before C++11. It covers everything from the very basics to some of the most advanced template metaprogramming and explains every detail of how templates work (both conceptually and at how they are implemented) and discusses many common pitfalls. Has excellent summaries of the One Definition Rule (ODR) and overload resolution in the appendices. A second edition covering C++11, C++14 and C++17 has been already published. [Review]
C++ 17 - The Complete Guide (Nicolai M. Josuttis) This book describes all the new features introduced in the C++17 Standard covering everything from the simple ones like 'Inline Variables', 'constexpr if' all the way up to 'Polymorphic Memory Resources' and 'New and Delete with overaligned Data'. [Review]
C++ in Action (Bartosz Milewski). This book explains C++ and its features by building an application from ground up. [Review]
Functional Programming in C++ (Ivan Cukic). This book introduces functional programming techniques to modern C++ (C++11 and later). A very nice read for those who want to apply functional programming paradigms to C++.
Professional C++ (Marc Gregoire, 5th Edition - Feb 2021) Provides a comprehensive and detailed tour of the C++ language implementation replete with professional tips and concise but informative in-text examples, emphasizing C++20 features. Uses C++20 features, such as modules and std::format
throughout all examples.
Modern C++ Design (Andrei Alexandrescu) A groundbreaking book on advanced generic programming techniques. Introduces policy-based design, type lists, and fundamental generic programming idioms then explains how many useful design patterns (including small object allocators, functors, factories, visitors, and multi-methods) can be implemented efficiently, modularly, and cleanly using generic programming. [Review]
C++ Template Metaprogramming (David Abrahams and Aleksey Gurtovoy)
C++ Concurrency In Action (Anthony Williams) A book covering C++11 concurrency support including the thread library, the atomics library, the C++ memory model, locks and mutexes, as well as issues of designing and debugging multithreaded applications. A second edition covering C++14 and C++17 has been already published. [Review]
Advanced C++ Metaprogramming (Davide Di Gennaro) A pre-C++11 manual of TMP techniques, focused more on practice than theory. There are a ton of snippets in this book, some of which are made obsolete by type traits, but the techniques, are nonetheless useful to know. If you can put up with the quirky formatting/editing, it is easier to read than Alexandrescu, and arguably, more rewarding. For more experienced developers, there is a good chance that you may pick up something about a dark corner of C++ (a quirk) that usually only comes about through extensive experience.
The C++ Programming Language (Bjarne Stroustrup) (updated for C++11) The classic introduction to C++ by its creator. Written to parallel the classic K&R, this indeed reads very much like it and covers just about everything from the core language to the standard library, to programming paradigms to the language's philosophy. [Review] Note: All releases of the C++ standard are tracked in the question "Where do I find the current C or C++ standard documents?".
C++ Standard Library Tutorial and Reference (Nicolai Josuttis) (updated for C++11) The introduction and reference for the C++ Standard Library. The second edition (released on April 9, 2012) covers C++11. [Review]
The C++ IO Streams and Locales (Angelika Langer and Klaus Kreft) There's very little to say about this book except that, if you want to know anything about streams and locales, then this is the one place to find definitive answers. [Review]
C++11/14/17/… References:
The C++11/14/17 Standard (INCITS/ISO/IEC 14882:2011/2014/2017) This, of course, is the final arbiter of all that is or isn't C++. Be aware, however, that it is intended purely as a reference for experienced users willing to devote considerable time and effort to its understanding. The C++17 standard is released in electronic form for 198 Swiss Francs.
The C++17 standard is available, but seemingly not in an economical form – directly from the ISO it costs 198 Swiss Francs (about $200 US). For most people, the final draft before standardization is more than adequate (and free). Many will prefer an even newer draft, documenting new features that are likely to be included in C++20.
Overview of the New C++ (C++11/14) (PDF only) (Scott Meyers) (updated for C++14) These are the presentation materials (slides and some lecture notes) of a three-day training course offered by Scott Meyers, who's a highly respected author on C++. Even though the list of items is short, the quality is high.
The C++ Core Guidelines (C++11/14/17/…) (edited by Bjarne Stroustrup and Herb Sutter) is an evolving online document consisting of a set of guidelines for using modern C++ well. The guidelines are focused on relatively higher-level issues, such as interfaces, resource management, memory management and concurrency affecting application architecture and library design. The project was announced at CppCon'15 by Bjarne Stroustrup and others and welcomes contributions from the community. Most guidelines are supplemented with a rationale and examples as well as discussions of possible tool support. Many rules are designed specifically to be automatically checkable by static analysis tools.
The C++ Super-FAQ (Marshall Cline, Bjarne Stroustrup and others) is an effort by the Standard C++ Foundation to unify the C++ FAQs previously maintained individually by Marshall Cline and Bjarne Stroustrup and also incorporating new contributions. The items mostly address issues at an intermediate level and are often written with a humorous tone. Not all items might be fully up to date with the latest edition of the C++ standard yet.
cppreference.com (C++03/11/14/17/…) (initiated by Nate Kohl) is a wiki that summarizes the basic core-language features and has extensive documentation of the C++ standard library. The documentation is very precise but is easier to read than the official standard document and provides better navigation due to its wiki nature. The project documents all versions of the C++ standard and the site allows filtering the display for a specific version. The project was presented by Nate Kohl at CppCon'14.
Note: Some information contained within these books may not be up-to-date or no longer considered best practice.
The Design and Evolution of C++ (Bjarne Stroustrup) If you want to know why the language is the way it is, this book is where you find answers. This covers everything before the standardization of C++.
Ruminations on C++ - (Andrew Koenig and Barbara Moo) [Review]
Advanced C++ Programming Styles and Idioms (James Coplien) A predecessor of the pattern movement, it describes many C++-specific “idioms”. It's certainly a very good book and might still be worth a read if you can spare the time, but quite old and not up-to-date with current C++.
Large Scale C++ Software Design (John Lakos) Lakos explains techniques to manage very big C++ software projects. Certainly, a good read, if it only was up to date. It was written long before C++ 98 and misses on many features (e.g. namespaces) important for large-scale projects. If you need to work in a big C++ software project, you might want to read it, although you need to take more than a grain of salt with it. The first volume of a new edition is released in 2019.
Inside the C++ Object Model (Stanley Lippman) If you want to know how virtual member functions are commonly implemented and how base objects are commonly laid out in memory in a multi-inheritance scenario, and how all this affects performance, this is where you will find thorough discussions of such topics.
The Annotated C++ Reference Manual (Bjarne Stroustrup, Margaret A. Ellis) This book is quite outdated in the fact that it explores the 1989 C++ 2.0 version - Templates, exceptions, namespaces and new casts were not yet introduced. Saying that however, this book goes through the entire C++ standard of the time explaining the rationale, the possible implementations, and features of the language. This is not a book to learn programming principles and patterns on C++, but to understand every aspect of the C++ language.
Thinking in C++ (Bruce Eckel, 2nd Edition, 2000). Two volumes; is a tutorial style free set of intro level books. Downloads: vol 1, vol 2. Unfortunately they're marred by a number of trivial errors (e.g. maintaining that temporaries are automatically const
), with no official errata list. A partial 3rd party errata list is available at http://www.computersciencelab.com/Eckel.htm, but it is apparently not maintained.
Scientific and Engineering C++: An Introduction to Advanced Techniques and Examples (John Barton and Lee Nackman) It is a comprehensive and very detailed book that tried to explain and make use of all the features available in C++, in the context of numerical methods. It introduced at the time several new techniques, such as the Curiously Recurring Template Pattern (CRTP, also called Barton-Nackman trick). It pioneered several techniques such as dimensional analysis and automatic differentiation. It came with a lot of compilable and useful code, ranging from an expression parser to a Lapack wrapper. The code is still available online. Unfortunately, the books have become somewhat outdated in the style and C++ features, however, it was an incredible tour-de-force at the time (1994, pre-STL). The chapters on dynamics inheritance are a bit complicated to understand and not very useful. An updated version of this classic book that includes move semantics and the lessons learned from the STL would be very nice.
If you are interested in fast as well as safe integer to string conversion method and not limited to the standard library, I can recommend the format_int
method from the {fmt} library:
fmt::format_int(42).str(); // convert to std::string
fmt::format_int(42).c_str(); // convert and get as a C string
// (mind the lifetime, same as std::string::c_str())
According to the integer to string conversion benchmarks from Boost Karma, this method several times faster than glibc's sprintf
or std::stringstream
. It is even faster than Boost Karma's own int_generator
as was confirm by an independent benchmark.
Disclaimer: I'm the author of this library.
Pure POSIX shell and sponge
:
suffix=foobar
while read l ; do printf '%s\n' "$l" "${suffix}" ; done < file |
sponge file
xargs
and printf
:
suffix=foobar
xargs -L 1 printf "%s${suffix}\n" < file | sponge file
Using join
:
suffix=foobar
join file file -e "${suffix}" -o 1.1,2.99999 | sponge file
Shell tools using paste
, yes
, head
& wc
:
suffix=foobar
paste file <(yes "${suffix}" | head -$(wc -l < file) ) | sponge file
Note that paste
inserts a Tab char before $suffix
.
Of course sponge
can be replaced with a temp file, afterwards mv
'd over the original filename, as with some other answers...
This answer is useful in the case you no longer have SSH access to the existing server (i.e. you lost your private key).
If you still have SSH access, please use one of the answers below.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#replacing-lost-key-pair
Here is what I did, thanks to Eric Hammond's blog post:
/dev/xvda1
volume (let's call it volume A) - see here/dev/xvdf
(or /dev/sdf
)/mnt/tmp
$ sudo mkdir /mnt/tmp; sudo mount /dev/xvdf1 /mnt/tmp
~/.ssh/authorized_keys
to /mnt/tmp/home/ubuntu/.ssh/authorized_keys
/dev/xvda
.pem
fileThat's it.
dir()
is the simple way. See here:
If your code says "int newVal=42" then you would reasonably expect that newVal is never uninitialised. But if you goto over this statement (which is what you're doing) then that's exactly what happens - newVal is in-scope but has not been assigned.
If that is what you really meant to happen then the language requires to make it explicit by saying "int newVal; newVal = 42;". Otherwise you can limit the scope of newVal to the single case, which is more likely what you wanted.
It may clarify things if you consider the same example but with "const int newVal = 42;"
When setting Access-Control-Allow-Origin
in .htaccess, only following worked:
SetEnvIf Origin "http(s)?://(.+\.)?domain\.com(:\d{1,5})?$" CRS=$0
Header always set Access-Control-Allow-Origin "%{CRS}e" env=CRS
I tried several other suggested keywords Header append
, Header set
, none worked as suggested in many answers on SO, though I have no idea if these keywords are outdated or not valid for nginx.
Here is my complete solution:
SetEnvIf Origin "http(s)?://(.+\.)?domain\.com(:\d{1,5})?$" CRS=$0
Header always set Access-Control-Allow-Origin "%{CRS}e" env=CRS
Header merge Vary "Origin"
Header always set Access-Control-Allow-Methods "GET, POST"
Header always set Access-Control-Allow-Headers: *
# Cached for a day
Header always set Access-Control-Max-Age: 86400
RewriteEngine On
# Respond with 200OK for OPTIONS
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule ^(.*)$ $1 [R=200,L]
We can do this simply,
div
of Issueafter a few seconds, a link will be generated. Now, copy the link or image URL and use it any supported platform.
You're looking for the OpenFileDialog
class.
For example:
Sub SomeButton_Click(sender As Object, e As EventArgs) Handles SomeButton.Click
Using dialog As New OpenFileDialog
If dialog.ShowDialog() <> DialogResult.OK Then Return
File.Copy(dialog.FileName, newPath)
End Using
End Sub
Here is an example. Green square is parent and yellow square is child element.
Hope that this helps.
var childElementClicked;_x000D_
_x000D_
$("#parentElement").click(function(){_x000D_
_x000D_
$("#childElement").click(function(){_x000D_
childElementClicked = true;_x000D_
});_x000D_
_x000D_
if( childElementClicked != true ) {_x000D_
_x000D_
// It is clicked on parent but not on child._x000D_
// Now do some action that you want._x000D_
alert('Clicked on parent');_x000D_
_x000D_
}else{_x000D_
alert('Clicked on child');_x000D_
}_x000D_
_x000D_
childElementClicked = false;_x000D_
_x000D_
});
_x000D_
#parentElement{_x000D_
width:200px;_x000D_
height:200px;_x000D_
background-color:green;_x000D_
position:relative;_x000D_
}_x000D_
_x000D_
#childElement{_x000D_
margin-top:50px;_x000D_
margin-left:50px;_x000D_
width:100px;_x000D_
height:100px;_x000D_
background-color:yellow;_x000D_
position:absolute;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div id="parentElement">_x000D_
<div id="childElement">_x000D_
</div>_x000D_
</div>
_x000D_
If you are using Databinding on layout you can get the context
from holder
. An exemple below.
@Override
public void onBindViewHolder(@NonNull GenericViewHolder holder, int position) {
View currentView = holder.binding.getRoot().findViewById(R.id.cycle_count_manage_location_line_layout);// id of your root layout
currentView.setBackgroundColor(ContextCompat.getColor(holder.binding.getRoot().getContext(), R.color.light_green));
}
I've faced this error, when there was no enough free space to create backup.
For me, plain old .contents()
appeared to work to return the text nodes, just have to be careful with your selectors so that you know they will be text nodes.
For example, this wrapped all the text content of the TDs in my table with pre
tags and had no problems.
jQuery("#resultTable td").content().wrap("<pre/>")
If you open the references folder and locate system.data.entity, click the item, then check the runtime version number in the Properties explorer, you will see the sub version as well. Mine for instance shows v4.0.30319 with the Version property showing 4.0.0.0.
You may have heard of Pylint that helps statically checking Python code. Few people know that it comes with a tool named Pyreverse that draws UML diagrams from the python code it reads. Pyreverse uses graphviz as a backend.
It is used like this:
pyreverse -o png -p yourpackage .
where the .
can also be a single file.
The approach you're looking for is FillDown
. Another way so you don't have to kick your head off every time is to store formulas in an array of strings. Combining them gives you a powerful method of inputting formulas by the multitude. Code follows:
Sub FillDown()
Dim strFormulas(1 To 3) As Variant
With ThisWorkbook.Sheets("Sheet1")
strFormulas(1) = "=SUM(A2:B2)"
strFormulas(2) = "=PRODUCT(A2:B2)"
strFormulas(3) = "=A2/B2"
.Range("C2:E2").Formula = strFormulas
.Range("C2:E11").FillDown
End With
End Sub
Screenshots:
Result as of line: .Range("C2:E2").Formula = strFormulas
:
Result as of line: .Range("C2:E11").FillDown
:
Of course, you can make it dynamic by storing the last row into a variable and turning it to something like .Range("C2:E" & LRow).FillDown
, much like what you did.
Hope this helps!
On my Windows 7 machine I have the following environment variables:
JAVA_HOME=C:\Program Files\Java\jdk1.7.0_07
M2_HOME=C:\apache-maven-3.0.3
On my PATH
variable, I have (among others) the following:
I tried doing what you've done with %M2%
having the nested %M2_HOME%
and it also works.
You can use php
code in files with extension .php
and only there (iff other is not defined in your server settings).
Just rename your file *.html
to *.php
If you want to allow php
code processing in files of different format, you have two options to do that:
1) Modifying httpd.conf
to allow this for all projects on your server, by adding:
AddHandler application/x-httpd-php .htm .html
2) Creating .htaccess
file in your separate project top directory with:
<Files />
AddType application/x-httpd-php .html
</Files>
For second option you need to allow use of .htaccess
files in your httpd.conf
, by adding the following settings:
AllowOverride All
AccessFileName .htaccess
*that is correct for Apache HTTP Server
To be clear when you us the drag indicator it will only copy the cell values down the column whilst there is a value in the adjacent cell in a given row. As soon as the drag operation sees an adjacent cell that is blank it will stop copying the formula down.
.e.g
1,a,b
2,a
3,
4,a
If the above is a spreadsheet then using the double click drag indicator on the 'b' cell will fill row 2 but not row three or four.
Comparable
is Fegan
.The method compareTo
you are overidding in it should have a Fegan
object as a parameter whereas you are casting it to a FoodItems
. Your compareTo
implementation should describe how a Fegan
compare to another Fegan
.
FoodItems
implement Comparable
aswell and copy paste your actual compareTo
logic in it.The parameters that you are passing into the DrawImage method should be the size you want the image on the paper rather than the size of the image itself, the DrawImage command will then take care of the scaling for you. Probably the easiest way is to use the following override of the DrawImage command.
args.Graphics.DrawImage(i, args.MarginBounds);
Note: This will skew the image if the proportions of the image are not the same as the rectangle. Some simple math on the size of the image and paper size will allow you to create a new rectangle that fits in the bounds of the paper without skewing the image.
type data1.csv > combined.csv
type data2.csv >> combined.csv
type data3.csv >> combined.csv
type data4.csv >> combined.csv
etc.
Assume that your using files without headers and all files have the same columns.
if you are using php7 you can use dirname function with level parameter of 2, for example :
dirname("/usr/local/lib", 2);
the second parameter "2" indicate how many level up
It is not good practice to save the value that is returned from JSON.stringify(userData)
to a cookie; it can lead to a bug in some browsers.
Before using it, you should convert it to base64 (using btoa
), and when reading it, convert from base64 (using atob
).
val = JSON.stringify(userData)
val = btoa(val)
write_cookie(val)
for my script of python, I use...
To START python script :
start-stop-daemon --start --background --pidfile $PIDFILE --make-pidfile --exec $DAEMON
To STOP python script :
PID=$(cat $PIDFILE)
kill -9 $PID
rm -f $PIDFILE
P.S.: sorry for poor English, I'm from CHILE :D
public static void main(String s[])
{
int firstArray[] = {2, 14, 6, 82, 22};
int secondArray[] = {3, 16, 12, 14, 48, 96};
int number = getCommonMinimumNumber(firstArray, secondArray);
System.out.println("The number is " + number);
}
public static int getCommonMinimumNumber(int firstSeries[], int secondSeries[])
{
Integer result =0;
if ( firstSeries.length !=0 && secondSeries.length !=0 )
{
series(firstSeries);
series(secondSeries);
one : for (int i = 0 ; i < firstSeries.length; i++)
{
for (int j = 0; j < secondSeries.length; j++)
if ( firstSeries[i] ==secondSeries[j])
{
result =firstSeries[i];
break one;
}
else
result = -999;
}
}
else if ( firstSeries == Null || secondSeries == null)
result =-999;
else
result = -999;
return result;
}
public static int[] series(int number[])
{
int temp;
boolean fixed = false;
while(fixed == false)
{
fixed = true;
for ( int i =0 ; i < number.length-1; i++)
{
if ( number[i] > number[i+1])
{
temp = number[i+1];
number[i+1] = number[i];
number[i] = temp;
fixed = false;
}
}
}
/*for ( int i =0 ;i< number.length;i++)
System.out.print(number[i]+",");*/
return number;
}
There are a number of ways to handle this.
My favorite way is to install http://pamsshagentauth.sourceforge.net/ on the remote systems and also your own public key. (Figure out a way to get these installed on the VM, somehow you got an entire Unix system installed, what's a couple more files?)
With your ssh agent forwarded, you can now log in to every system without a password.
And even better, that pam module will authenticate for sudo with your ssh key pair so you can run with root (or any other user's) rights as needed.
You don't need to worry about the host key interaction. If the input is not a terminal then ssh will just limit your ability to forward agents and authenticate with passwords.
You should also look into packages like Capistrano. Definitely look around that site; it has an introduction to remote scripting.
Individual script lines might look something like this:
ssh remote-system-name command arguments ... # so, for exmaple,
ssh target.mycorp.net sudo puppet apply
You could use CAST or CONVERT:
SELECT CAST(MyVarcharCol AS INT) FROM Table
SELECT CONVERT(INT, MyVarcharCol) FROM Table
First)
Second)
In the opening tag of your form, set an action attribute like so:
<form id="contactForm" action="#">
See sys.exit
. That function will quit your program with the given exit status.
Try to use it
LayoutInflater inflater = (LayoutInflater).getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View view = inflate.from(YourActivity.this).inflate(R.layout.yourLayout, null);
Another approach is to first do a searchType: 'count'
, then and then do a normal search with size
set to results.count
.
The advantage here is it avoids depending on a magic number for UPPER_BOUND
as suggested in this similar SO question, and avoids the extra overhead of building too large of a priority queue that Shay Banon describes here. It also lets you keep your results sorted, unlike scan
.
The biggest disadvantage is that it requires two requests. Depending on your circumstance, this may be acceptable.
//To delete all the files of a specific folder & subfolder
public static void deleteFiles(File directory, Context c) {
try {
for (File file : directory.listFiles()) {
if (file.isFile()) {
final ContentResolver contentResolver = c.getContentResolver();
String canonicalPath;
try {
canonicalPath = file.getCanonicalPath();
} catch (IOException e) {
canonicalPath = file.getAbsolutePath();
}
final Uri uri = MediaStore.Files.getContentUri("external");
final int result = contentResolver.delete(uri,
MediaStore.Files.FileColumns.DATA + "=?", new String[]{canonicalPath});
if (result == 0) {
final String absolutePath = file.getAbsolutePath();
if (!absolutePath.equals(canonicalPath)) {
contentResolver.delete(uri,
MediaStore.Files.FileColumns.DATA + "=?", new String[]{absolutePath});
}
}
if (file.exists()) {
file.delete();
if (file.exists()) {
try {
file.getCanonicalFile().delete();
} catch (IOException e) {
e.printStackTrace();
}
if (file.exists()) {
c.deleteFile(file.getName());
}
}
}
} else
deleteFiles(file, c);
}
} catch (Exception e) {
}
}
here is your solution it will also refresh the gallery as well.
Node.js uses libuv behind the scenes. libuv has a thread pool (of size 4 by default). Therefore Node.js does use threads to achieve concurrency.
However, your code runs on a single thread (i.e., all of the callbacks of Node.js functions will be called on the same thread, the so called loop-thread or event-loop). When people say "Node.js runs on a single thread" they are really saying "the callbacks of Node.js run on a single thread".
In windows 7, you may have to edit this file
C:\Users\<UserName>\AppData\Roaming\Subversion\servers
[global]
http-proxy-host = ip.add.re.ss
http-proxy-port = 3128
If you want to change ng-view you'll have to use the '#'
$window.location.href= "#operation";
You may see if you are not loading jQuery twice somehow. Especially after your plugin JavaScript file loaded.
I has the same error and found that one of my external PHP files was loading jQuery again.
<select name="gender" class="form-control" id="gender">
<option value="">Select Gender</option>
<option value="M" @if (old('gender') == "M") {{ 'selected' }} @endif>Male</option>
<option value="F" @if (old('gender') == "F") {{ 'selected' }} @endif>Female</option>
</select>
ThiefMaster's answer is 100% correct, although I came across a similar problem where I needed to fetch a property from a nested object (object within an object), so as an alternative to his answer, you can create a recursive solution that will allow you to define a nomenclature to grab any property, regardless of depth:
function fetchFromObject(obj, prop) {
if(typeof obj === 'undefined') {
return false;
}
var _index = prop.indexOf('.')
if(_index > -1) {
return fetchFromObject(obj[prop.substring(0, _index)], prop.substr(_index + 1));
}
return obj[prop];
}
Where your string reference to a given property ressembles property1.property2
Code and comments in JsFiddle.
I have used Derby and i really hate it's data type conversion functions, especially date/time functions. (Number Type)<--> Varchar conversion it's a pain.
So that if you plan use data type conversions in your DB statements consider the use of othe embedded DB, i learn it too late.
In the most recent Selenium version, use:
driver.find_element_by_id('foo').clear()
You need to use the reserve function to set an initial allocated size or do it in the initial constructor.
vector<CustomClass *> content(20000);
or
vector<CustomClass *> content;
...
content.reserve(20000);
When you reserve()
elements, the vector
will allocate enough space for (at least?) that many elements. The elements do not exist in the vector
, but the memory is ready to be used. This will then possibly speed up push_back()
because the memory is already allocated.
Here is the solution. It should work fine.
DataTable dt = new DataTable();
dt = dsData.Tables[0].Clone();
DataRows[] drResults = dsData.Tables[0].Select("ColName = 'criteria');
foreach(DataRow dr in drResults)
{
object[] row = dr.ItemArray;
dt.Rows.Add(row);
}
you may try the following code:
mainWindow = new BrowserWindow({
webPreferences: {
nodeIntegration:false,
}
});