This function returns an array regardless of the size of the range.
Ranges will return an array unless the range is only 1 cell and then it returns a single value instead. This function will turn the single value into an array (1 based, the same as the array's returned by ranges)
This answer improves on previous answers as it will return an array from a range no matter what the size. It is also more efficient that other answers as it will return the array generated by the range if possible. Works with single dimension and multi-dimensional arrays
The function works by trying to find the upper bounds of the array. If that fails then it must be a single value so we'll create an array and assign the value to it.
Public Function RangeToArray(inputRange As Range) As Variant()
Dim size As Integer
Dim inputValue As Variant, outputArray() As Variant
' inputValue will either be an variant array for ranges with more than 1 cell
' or a single variant value for range will only 1 cell
inputValue = inputRange
On Error Resume Next
size = UBound(inputValue)
If Err.Number = 0 Then
RangeToArray = inputValue
Else
On Error GoTo 0
ReDim outputArray(1 To 1, 1 to 1)
outputArray(1,1) = inputValue
RangeToArray = outputArray
End If
On Error GoTo 0
End Function
You need to use the autoGenerate
property
Your primary key annotation should be like this:
@PrimaryKey(autoGenerate = true)
Reference for PrimaryKey.
A tad more generic copy/paste function for your project.
sumjq = function(selector) {
var sum = 0;
$(selector).each(function() {
sum += Number($(this).text());
});
return sum;
}
console.log(sumjq('.price'));
I like this for log4j:
log4j.logger.org.hibernate.SQL=trace
log4j.logger.org.hibernate.engine.query=trace
log4j.logger.org.hibernate.type=trace
log4j.logger.org.hibernate.jdbc=trace
log4j.logger.org.hibernate.type.descriptor.sql.BasicExtractor=error
log4j.logger.org.hibernate.type.CollectionType=error
Try something like this:
Dim windowsShell
Dim regValue
Set windowsShell = CreateObject("WScript.Shell")
regValue = windowsShell.RegRead("someRegKey")
timeout 5
to delay
timeout 5 >nul
to delay without asking you to press any key to cancel
This should also work and is a closer answer to what is asked in the question:
for i in range(len(x)):
if valeur.item(i) <= 0.6:
print ("this works")
else:
print ("valeur is too high")
If it needs to run on the onload
event of the page, meaning that the document and all its assets have loaded, this needs to be in a content script embedded in each page for which you wish to track onload
.
It should be legal to put a semicolon directly before the WITH keyword.
Most people will tell you to run this command:
mode con:cols=80 lines=100
but you should just try typing:
MODE 1000
as a line in your batch file or cmd prompt.
Try using a regex instead of a string for the first argument.
"this is a test".replace(/ /g,'%20')
// #=> "this%20is%20a%20test"
You can't insert the values into timestamp column explicitly. It is auto-generated. Do not use this column in your insert statement. Refer http://msdn.microsoft.com/en-us/library/ms182776(SQL.90).aspx for more details.
You could use a datetime instead of a timestamp like this:
create table demo (
ts datetime
)
insert into demo select current_timestamp
select ts from demo
Returns:
2014-04-04 09:20:01.153
Just do
git pull origin [branch]
and then you should be able to push.
If you have commits on your own and didn't push it the branch yet, try
git pull --rebase origin [branch]
and then you should be able to push.
Read more about handling branches with Git.
You can use the watch mode to detect changes:
Do everything at atomic level. So first check if watch method itself is getting called or not by consoling something inside. Once it has been established that watch is getting called, smash it out with your business logic.
watch: {
myProp: function() {
console.log('Prop changed')
}
}
git fetch
will grab the latest list of branches.
Now you can git checkout MyNewBranch
Done :)
For more info see docs: git fetch
You could do it like this:
HTML
<table>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
<td>Cell 3</td>
<td>Cell 4</td>
<td><a href="#" id="show_1">Show Extra</a></td>
</tr>
<tr>
<td colspan="5">
<div id="extra_1" style="display: none;">
<br>hidden row
<br>hidden row
<br>hidden row
</div>
</td>
</tr>
</table>
jQuery
$("a[id^=show_]").click(function(event) {
$("#extra_" + $(this).attr('id').substr(5)).slideToggle("slow");
event.preventDefault();
});
See a demo on JSFiddle
This response isn't about macro war, but producing error if no matching platform is found.
#ifdef LINUX_KEY_WORD
... // linux code goes here.
#elif WINDOWS_KEY_WORD
... // windows code goes here.
#else
#error Platform not supported
#endif
If #error
is not supported, you may use static_assert (C++0x) keyword. Or you may implement custom STATIC_ASSERT, or just declare an array of size 0, or have switch that has duplicate cases. In short, produce error at compile time and not at runtime
It only works till 4000 byte, What if the clob is bigger than 4000 bytes then we use this
declare
v_clob_size clob;
begin
v_clob_size:= (DBMS_LOB.getlength(v_clob)) / 1024 / 1024;
DBMS_OUTPUT.put_line('CLOB Size ' || v_clob_size);
end;
or
select (DBMS_LOB.getlength(your_column_name))/1024/1024 from your_table
It's more standard to use the format yyyy-mm-dd hh:mm:ss (IE: 2009-06-23 19:30:20)
Using that you won't have to worry about the format of the date (MM/DD/YYYY or DD/MM/YYYY). It will work with all of them.
I had the same error message (in my case : "Argument 'languageSelectorCtrl' is not a function, got undefined").
After some tedious comparison with Angular seed's code, I found out that I had previously removed a reference to the controllers module in app.js. (spot it at https://github.com/angular/angular-seed/blob/master/app/js/app.js)
So I had this:
angular.module('MyApp', ['MyApp.filters', 'MyApp.services', 'MyApp.directives'])
This failed.
And when I added the missing reference:
angular.module('MyApp', ['MyApp.filters', 'MyApp.services', 'MyApp.controllers', 'MyApp.directives'])
The error message disappeared and Angular could instanciate the controllers again.
@Override
protected void onPostExecute(final Boolean success) {
mProgressDialog.dismiss();
mProgressDialog = null;
setting the value null works for me
Slightly off topic:
I found this question while looking for a way to format a number as currency, like so:
$100
($50) # negative numbers without '-' and in parens
I ended up doing:
{% if var >= 0 %} ${{ var|stringformat:"d" }}
{% elif var < 0 %} $({{ var|stringformat:"d"|cut:"-" }})
{% endif %}
You could also do, e.g. {{ var|stringformat:"1.2f"|cut:"-" }}
to display as $50.00
(with 2 decimal places if that's what you want.
Perhaps slightly on the hacky side, but maybe someone else will find it useful.
The example Java data structure in the original question does not match the description of the JSON structure in the comment.
The JSON is described as
"an array of {object with an array of {object}}".
In terms of the types described in the question, the JSON translated into a Java data structure that would match the JSON structure for easy deserialization with Gson is
"an array of {TypeDTO object with an array of {ItemDTO object}}".
But the Java data structure provided in the question is not this. Instead it's
"an array of {TypeDTO object with an array of an array of {ItemDTO object}}".
A two-dimensional array != a single-dimensional array.
This first example demonstrates using Gson to simply deserialize and serialize a JSON structure that is "an array of {object with an array of {object}}".
input.json Contents:
[
{
"id":1,
"name":"name1",
"items":
[
{"id":2,"name":"name2","valid":true},
{"id":3,"name":"name3","valid":false},
{"id":4,"name":"name4","valid":true}
]
},
{
"id":5,
"name":"name5",
"items":
[
{"id":6,"name":"name6","valid":true},
{"id":7,"name":"name7","valid":false}
]
},
{
"id":8,
"name":"name8",
"items":
[
{"id":9,"name":"name9","valid":true},
{"id":10,"name":"name10","valid":false},
{"id":11,"name":"name11","valid":false},
{"id":12,"name":"name12","valid":true}
]
}
]
Foo.java:
import java.io.FileReader;
import java.util.ArrayList;
import com.google.gson.Gson;
public class Foo
{
public static void main(String[] args) throws Exception
{
Gson gson = new Gson();
TypeDTO[] myTypes = gson.fromJson(new FileReader("input.json"), TypeDTO[].class);
System.out.println(gson.toJson(myTypes));
}
}
class TypeDTO
{
int id;
String name;
ArrayList<ItemDTO> items;
}
class ItemDTO
{
int id;
String name;
Boolean valid;
}
This second example uses instead a JSON structure that is actually "an array of {TypeDTO object with an array of an array of {ItemDTO object}}" to match the originally provided Java data structure.
input.json Contents:
[
{
"id":1,
"name":"name1",
"items":
[
[
{"id":2,"name":"name2","valid":true},
{"id":3,"name":"name3","valid":false}
],
[
{"id":4,"name":"name4","valid":true}
]
]
},
{
"id":5,
"name":"name5",
"items":
[
[
{"id":6,"name":"name6","valid":true}
],
[
{"id":7,"name":"name7","valid":false}
]
]
},
{
"id":8,
"name":"name8",
"items":
[
[
{"id":9,"name":"name9","valid":true},
{"id":10,"name":"name10","valid":false}
],
[
{"id":11,"name":"name11","valid":false},
{"id":12,"name":"name12","valid":true}
]
]
}
]
Foo.java:
import java.io.FileReader;
import java.util.ArrayList;
import com.google.gson.Gson;
public class Foo
{
public static void main(String[] args) throws Exception
{
Gson gson = new Gson();
TypeDTO[] myTypes = gson.fromJson(new FileReader("input.json"), TypeDTO[].class);
System.out.println(gson.toJson(myTypes));
}
}
class TypeDTO
{
int id;
String name;
ArrayList<ItemDTO> items[];
}
class ItemDTO
{
int id;
String name;
Boolean valid;
}
Regarding the remaining two questions:
is Gson extremely fast?
Not compared to other deserialization/serialization APIs. Gson has traditionally been amongst the slowest. The current and next releases of Gson reportedly include significant performance improvements, though I haven't looked for the latest performance test data to support those claims.
That said, if Gson is fast enough for your needs, then since it makes JSON deserialization so easy, it probably makes sense to use it. If better performance is required, then Jackson might be a better choice to use. It offers much (maybe even all) of the conveniences of Gson.
Or am I better to stick with what I've got working already?
I wouldn't. I would most always rather have one simple line of code like
TypeDTO[] myTypes = gson.fromJson(new FileReader("input.json"), TypeDTO[].class);
...to easily deserialize into a complex data structure, than the thirty lines of code that would otherwise be needed to map the pieces together one component at a time.
wanna add to main answer above
I tried to follow it but my recyclerView began to stretch every item to a screen
I had to add next line after inflating for reach to goal
itemLayoutView.setLayoutParams(new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, RecyclerView.LayoutParams.WRAP_CONTENT));
I already added these params by xml but it didnot work correctly
and with this line all is ok
The reason to use getClass
is to ensure the symmetric property of the equals
contract. From equals' JavaDocs:
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
By using instanceof, it's possible to not be symmetric. Consider the example:
Dog extends Animal.
Animal's equals
does an instanceof
check of Animal.
Dog's equals
does an instanceof
check of Dog.
Give Animal a and Dog d (with other fields the same):
a.equals(d) --> true
d.equals(a) --> false
This violates the symmetric property.
To strictly follow equal's contract, symmetry must be ensured, and thus the class needs to be the same.
Take a look at JManage. It's able to execute MBean methods and get / set attributes from command line.
It allows servlets to have multiple servlet mappings:
<servlet>
<servlet-name>Servlet1</servlet-name>
<servlet-path>foo.Servlet</servlet-path>
</servlet>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/enroll</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/pay</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/bill</url-pattern>
</servlet-mapping>
It allows filters to be mapped on the particular servlet:
<filter-mapping>
<filter-name>Filter1</filter-name>
<servlet-name>Servlet1</servlet-name>
</filter-mapping>
Your proposal would support neither of them. Note that the web.xml
is read and parsed only once during application's startup, not on every HTTP request as you seem to think.
Since Servlet 3.0, there's the @WebServlet
annotation which minimizes this boilerplate:
@WebServlet("/enroll")
public class Servlet1 extends HttpServlet {
Live @Sergey's solution but with integer division.
double value = 23.8764367843;
double rounded = (double) Math.round(value * 100) / 100;
System.out.println(value +" rounded is "+ rounded);
prints
23.8764367843 rounded is 23.88
EDIT: As Sergey points out, there should be no difference between multipling double*int and double*double and dividing double/int and double/double. I can't find an example where the result is different. However on x86/x64 and other systems there is a specific machine code instruction for mixed double,int values which I believe the JVM uses.
for (int j = 0; j < 11; j++) {
long start = System.nanoTime();
for (double i = 1; i < 1e6; i *= 1.0000001) {
double rounded = (double) Math.round(i * 100) / 100;
}
long time = System.nanoTime() - start;
System.out.printf("double,int operations %,d%n", time);
}
for (int j = 0; j < 11; j++) {
long start = System.nanoTime();
for (double i = 1; i < 1e6; i *= 1.0000001) {
double rounded = (double) Math.round(i * 100.0) / 100.0;
}
long time = System.nanoTime() - start;
System.out.printf("double,double operations %,d%n", time);
}
Prints
double,int operations 613,552,212
double,int operations 661,823,569
double,int operations 659,398,960
double,int operations 659,343,506
double,int operations 653,851,816
double,int operations 645,317,212
double,int operations 647,765,219
double,int operations 655,101,137
double,int operations 657,407,715
double,int operations 654,858,858
double,int operations 648,702,279
double,double operations 1,178,561,102
double,double operations 1,187,694,386
double,double operations 1,184,338,024
double,double operations 1,178,556,353
double,double operations 1,176,622,937
double,double operations 1,169,324,313
double,double operations 1,173,162,162
double,double operations 1,169,027,348
double,double operations 1,175,080,353
double,double operations 1,182,830,988
double,double operations 1,185,028,544
use below code, as this is 100% growth rate in case of 0 to any number :
IFERROR((NEW-OLD)/OLD,100%)
"More NIO features" has file watch functionality, with implementation dependent upon the underlying OS. Should be in JDK7.
Update: Was added to Java SE 7. Chris Janicki offers a link to the relevant Java tutorial.
<?php
if(isset($_GET['delete'])){
$delurl=$_GET['delete'];
unlink($delurl);
}
?>
<?php
if ($handle = opendir('.')) {
while (false !== ($entry = readdir($handle))) {
if ($entry != "." && $entry != "..") {
echo "<a href=\"$entry\">$entry</a> | <a href=\"?delete=$entry\">Delete</a><br>";
}
}
closedir($handle);
}
?>
This is It
html {_x000D_
padding: 20px 0;_x000D_
background-color: #efefef;_x000D_
}_x000D_
_x000D_
body {_x000D_
width: 400px;_x000D_
padding: 40px;_x000D_
margin: 0 auto;_x000D_
background: #fff;_x000D_
box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.5);_x000D_
}_x000D_
_x000D_
video {_x000D_
width: 400px;_x000D_
display: block;_x000D_
}
_x000D_
<video onloadeddata="this.play();this.muted=false;" poster="https://durian.blender.org/wp-content/themes/durian/images/void.png" playsinline loop muted controls>_x000D_
<source src="http://grochtdreis.de/fuer-jsfiddle/video/sintel_trailer-480.mp4" type="video/mp4" />_x000D_
Your browser does not support the video tag or the file format of this video._x000D_
</video>
_x000D_
Try using the InStr function which returns the index in the string at which the character was found. If InStr returns 0, the string was not found.
If InStr(myString, "A") > 0 Then
For the error on the line assigning to newStr, convert oldStr.IndexOf to that InStr function also.
Left(oldStr, InStr(oldStr, "A"))
Go to services (services.msc) and restart the services in the image and then try to connect.
jQuery("#your_div_id").remove(); will completely remove the corresponding elements from the HTML DOM. So if you want to show the div on another event without a refresh, it will not be possible to retrieve the removed elements back unless you use AJAX.
jQuery("#your_div_id").toggle("slow"); will also could make unexpected results. As an Example when you select some element on your div which generates another div with a close button(which uses the same close functionality just as your previous div) it could make undesired behaviour.
So without using AJAX, a good solution for the close button would be as follows
HTML____________
<div id="your_div_id">
<span class="close_div" onclick="close_div(1)">✖</span>
</div>
JQUERY__________
function close_div(id) {
if(id === 1) {
jQuery("#your_div_id").hide();
}
}
Now you can show the div, when another event occures as you wish... :-)
Here are the functions I used for this end:
function localToGMTStingTime(localTime = null) {
var date = localTime ? new Date(localTime) : new Date();
return new Date(date.getTime() + (date.getTimezoneOffset() * 60000)).toISOString();
};
function GMTToLocalStingTime(GMTTime = null) {
var date = GMTTime ? new Date(GMTTime) : new Date();;
return new Date(date.getTime() - (date.getTimezoneOffset() * 60000)).toISOString();
};
And build yet more on the previous answer, this version of routes/index.js will ignore any files not ending in .js (and itself)
var fs = require('fs');
module.exports = function(app) {
fs.readdirSync(__dirname).forEach(function(file) {
if (file === "index.js" || file.substr(file.lastIndexOf('.') + 1) !== 'js')
return;
var name = file.substr(0, file.indexOf('.'));
require('./' + name)(app);
});
}
Just call start()
new Thread()
{
public void run() {
System.out.println("blah");
}
}.start();
If answer by Sydney still doesn't help then try below. After following Sydney's answer, goto Properties > Projects Facets deselect Dynamic Web Module and then change the version to match your web.config and then select again. Apply > Save Then Maven Update.
web.xml
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:web="http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="Web_App_1" version="3.1">
<display-name>JavaServerFaces</display-name>
<!-- Change to "Production" when you are ready to deploy -->
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<!-- Welcome page -->
<welcome-file-list>
<welcome-file>jsfs/hello.xhtml</welcome-file>
</welcome-file-list>
<!-- JSF mapping -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map these files with JSF -->
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>jsfs/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
I found this function on a blog
ggplotRegression <- function (fit) {
`require(ggplot2)
ggplot(fit$model, aes_string(x = names(fit$model)[2], y = names(fit$model)[1])) +
geom_point() +
stat_smooth(method = "lm", col = "red") +
labs(title = paste("Adj R2 = ",signif(summary(fit)$adj.r.squared, 5),
"Intercept =",signif(fit$coef[[1]],5 ),
" Slope =",signif(fit$coef[[2]], 5),
" P =",signif(summary(fit)$coef[2,4], 5)))
}`
once you loaded the function you could simply
ggplotRegression(fit)
you can also go for ggplotregression( y ~ x + z + Q, data)
Hope this helps.
I'm surprised that not many posts contain the one most important reason for an interface: Design Patterns. It's the bigger picture into using contracts, and although it's a syntax decoration to machine code (to be honest, the compiler probably just ignores them), abstraction and interfaces are pivotal for OOP, human understanding, and complex system architectures.
Let's expand the pizza analogy to say a full fledge 3 course meal. We'll still have the core Prepare()
interface for all our food categories, but we'd also have abstract declarations for course selections (starter, main, dessert), and differing properties for food types (savoury/sweet, vegetarian/non-vegetarian, gluten free etc).
Based on these specifications, we could implement the Abstract Factory pattern to conceptualise the whole process, but use interfaces to ensure that only the foundations were concrete. Everything else could become flexible or encourage polymorphism, yet maintain encapsulation between the different classes of Course
that implement the ICourse
interface.
If I had more time, I'd like to draw up a full example of this, or someone can extend this for me, but in summary, a C# interface would be the best tool in designing this type of system.
It looks like you are trying to use (almost) straight up C code here. Go has a few differences.
const
. The term const
has a different meaning in Go, as it does in C. The list should be defined as var
instead.basenameOpts
as opposed to basename_opts
.char
type in Go. You probably want byte
(or rune
if you intend to allow unicode codepoints).var x = foo
.For example:
type opt struct {
shortnm byte
longnm, help string
needArg bool
}
var basenameOpts = []opt {
opt {
shortnm: 'a',
longnm: "multiple",
needArg: false,
help: "Usage for a",
},
opt {
shortnm: 'b',
longnm: "b-option",
needArg: false,
help: "Usage for b",
},
}
An alternative is to declare the list with its type and then use an init
function to fill it up. This is mostly useful if you intend to use values returned by functions in the data structure. init
functions are run when the program is being initialized and are guaranteed to finish before main
is executed. You can have multiple init
functions in a package, or even in the same source file.
type opt struct {
shortnm byte
longnm, help string
needArg bool
}
var basenameOpts []opt
func init() {
basenameOpts = []opt{
opt {
shortnm: 'a',
longnm: "multiple",
needArg: false,
help: "Usage for a",
},
opt {
shortnm: 'b',
longnm: "b-option",
needArg: false,
help: "Usage for b",
},
}
}
Since you are new to Go, I strongly recommend reading through the language specification. It is pretty short and very clearly written. It will clear a lot of these little idiosyncrasies up for you.
I had exactly the same issue, after moving from old go version (installed from old PPA) to newer (1.2.1) default packages in ubuntu 14.04.
The first step was to purge existing go:
sudo apt-get purge golang*
Which outputs following warnings:
dpkg: warning: while removing golang-go, directory '/usr/lib/go/src' not empty so not removed
dpkg: warning: while removing golang-go.tools, directory '/usr/lib/go' not empty so not removed
It looks like removing go leaves some files behind, which in turn can confuse newer install. More precisely, installation itself will complete fine, but afterwards any go command, like "go get something" gives those "unrecognized import path" errors.
All I had to do was to remove those dirs first, reinstall golang, and all works like a charm (assuming you also set GOPATH)
# careful!
sudo rm -rf /usr/lib/go /usr/lib/go/src
sudo apt-get install golang-go golang-go.tools
As of TypeScript 1.6, properties in object literals that do not have a corresponding property in the type they're being assigned to are flagged as errors.
Usually this error means you have a bug (typically a typo) in your code, or in the definition file. The right fix in this case would be to fix the typo. In the question, the property callbackOnLoactionHash
is incorrect and should have been callbackOnLocationHash
(note the mis-spelling of "Location").
This change also required some updates in definition files, so you should get the latest version of the .d.ts for any libraries you're using.
Example:
interface TextOptions {
alignment?: string;
color?: string;
padding?: number;
}
function drawText(opts: TextOptions) { ... }
drawText({ align: 'center' }); // Error, no property 'align' in 'TextOptions'
There are a few cases where you may have intended to have extra properties in your object. Depending on what you're doing, there are several appropriate fixes
Sometimes you want to make sure a few things are present and of the correct type, but intend to have extra properties for whatever reason. Type assertions (<T>v
or v as T
) do not check for extra properties, so you can use them in place of a type annotation:
interface Options {
x?: string;
y?: number;
}
// Error, no property 'z' in 'Options'
let q1: Options = { x: 'foo', y: 32, z: 100 };
// OK
let q2 = { x: 'foo', y: 32, z: 100 } as Options;
// Still an error (good):
let q3 = { x: 100, y: 32, z: 100 } as Options;
Some APIs take an object and dynamically iterate over its keys, but have 'special' keys that need to be of a certain type. Adding a string indexer to the type will disable extra property checking
Before
interface Model {
name: string;
}
function createModel(x: Model) { ... }
// Error
createModel({name: 'hello', length: 100});
After
interface Model {
name: string;
[others: string]: any;
}
function createModel(x: Model) { ... }
// OK
createModel({name: 'hello', length: 100});
interface Animal { move; }
interface Dog extends Animal { woof; }
interface Cat extends Animal { meow; }
interface Horse extends Animal { neigh; }
let x: Animal;
if(...) {
x = { move: 'doggy paddle', woof: 'bark' };
} else if(...) {
x = { move: 'catwalk', meow: 'mrar' };
} else {
x = { move: 'gallop', neigh: 'wilbur' };
}
Two good solutions come to mind here
Specify a closed set for x
// Removes all errors
let x: Dog|Cat|Horse;
or Type assert each thing
// For each initialization
x = { move: 'doggy paddle', woof: 'bark' } as Dog;
A clean solution to the "data model" problem using intersection types:
interface DataModelOptions {
name?: string;
id?: number;
}
interface UserProperties {
[key: string]: any;
}
function createDataModel(model: DataModelOptions & UserProperties) {
/* ... */
}
// findDataModel can only look up by name or id
function findDataModel(model: DataModelOptions) {
/* ... */
}
// OK
createDataModel({name: 'my model', favoriteAnimal: 'cat' });
// Error, 'ID' is not correct (should be 'id')
findDataModel({ ID: 32 });
See also https://github.com/Microsoft/TypeScript/issues/3755
Here is my answer -
files=(xorg-x11-fonts*)
if [ -e "${files[0]}" ];
then
printf "BLAH"
fi
Align the text area box to the label, not the label to the text area,
label {
width: 180px;
display: inline-block;
}
textarea{
vertical-align: middle;
}
<label for="myfield">Label text</label><textarea id="myfield" rows="5" cols="30"></textarea>
My locale settings seemed incomplete, so I had too look beyond this SO answer and found:
http://docs.python.org/library/decimal.html#recipes
OS-independent
Just wanted to share here.
Try Server.UrlEncode()
, or System.Web.HttpUtility.UrlEncode()
for instances when you don't have access to the Server
object. You can also use System.Uri.EscapeUriString()
to avoid adding a reference to the System.Web
assembly.
ImageButton
can't have text
(or, at least, android:text
isn't listed in its attributes).
The Trick is:
It looks like you need to use Button
(and look at drawableTop
or setCompoundDrawablesWithIntrinsicBounds(int,int,int,int))
.
I had the same problem,
what you have to do is declare the second cursor as: DECLARE [second_cursor] Cursor LOCAL For
You see"CURSOR LOCAL FOR" instead of "CURSOR FOR"
If you want to convert to the new ES6 Map do this:
var kvArray = [['key1', 'value1'], ['key2', 'value2']];
var myMap = new Map(kvArray);
Why should you use this type of Map? Well that is up to you. Take a look at this.
Note that datetime.datetime.fromtimestamp(timestamp) and .utcfromtimestamp(timestamp) fail on windows for dates before Jan. 1, 1970 while negative unix timestamps seem to work on unix-based platforms. The docs say this:
See also Issue1646728
sort -u
will be slightly faster, because it does not need to pipe the output between two commands
also see my question on the topic: calling uniq and sort in different orders in shell
WhatsApp Inc. does not provide an open API but a reverse-engineered library is made available on GitHub by the team Venomous on the GitHub. This however according to my knowledge is made possible in PHP. You can check the link here: https://github.com/venomous0x/WhatsAPI
Hope this helps
The Swift 2 solution:
let documentDirectoryPath: String = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first!
if !NSFileManager.defaultManager().fileExistsAtPath(documentDirectoryPath) {
do {
try NSFileManager.defaultManager().createDirectoryAtPath(documentDirectoryPath, withIntermediateDirectories: false, attributes: nil)
} catch let createDirectoryError as NSError {
print("Error with creating directory at path: \(createDirectoryError.localizedDescription)")
}
}
The function move.CompleteMove(events)
that you use within your class probably doesn't contain a return
statement. So nothing is returned to self.values
(==> None). Use return
in move.CompleteMove(events)
to return whatever you want to store in self.values
and it should work. Hope this helps.
Add this to you PageLoad and it will solve your problem:
ScriptManager scriptManager = ScriptManager.GetCurrent(this.Page);
scriptManager.RegisterPostBackControl(this.lblbtndoc1);
Now, unless you're trying to write C++ code using Python syntax, what would you need overloading for?
I think it's exactly opposite. Overloading is only necessary to make strongly-typed languages act more like Python. In Python you have keyword argument, and you have *args
and **kwargs
.
See for example: What is a clean, Pythonic way to have multiple constructors in Python?
You can just use:
> names(LIST)
[1] "A" "B"
Obviously the names of the first element is just
> names(LIST)[1]
[1] "A"
This worked for me
scan= filter(scan, " [\\s]+", " ");
scan= sac.trim();
where filter is following function and scan is the input string:
public String filter(String scan, String regex, String replace) {
StringBuffer sb = new StringBuffer();
Pattern pt = Pattern.compile(regex);
Matcher m = pt.matcher(scan);
while (m.find()) {
m.appendReplacement(sb, replace);
}
m.appendTail(sb);
return sb.toString();
}
{% for source in sources %}
<tr>
<td>{{ source }}</td>
<td>
{% ifequal title source %}
Just now!
{% endifequal %}
</td>
</tr>
{% endfor %}
or
{% for source in sources %}
<tr>
<td>{{ source }}</td>
<td>
{% if title == source %}
Just now!
{% endif %}
</td>
</tr>
{% endfor %}
To force the download of a PDF file, instead of being handled by the browser's PDF plugin:
public ActionResult DownloadPDF()
{
return File("~/Content/MyFile.pdf", "application/pdf", "MyRenamedFile.pdf");
}
If you want to let the browser handle by its default behavior (plugin or download), just send two parameters.
public ActionResult DownloadPDF()
{
return File("~/Content/MyFile.pdf", "application/pdf");
}
You'll need to use the third parameter to specify a name for the file on the browser dialog.
UPDATE: Charlino is right, when passing the third parameter (download filename) Content-Disposition: attachment;
gets added to the Http Response Header. My solution was to send application\force-download
as the mime-type, but this generates a problem with the filename of the download so the third parameter is required to send a good filename, therefore eliminating the need to force a download.
you should be using the .Value of the datetime parameter. All Nullable structs have a value property which returns the concrete type of the object. but you must check to see if it is null beforehand otherwise you will get a runtime error.
i.e:
datetime.Value
but check to see if it has a value first!
if (datetime.HasValue)
{
// work with datetime.Value
}
void main()
{
int a,b,c,d,e,max;
max=a;
if(b/max)
max=b;
if(c/max)
max=c;
if(d/max)
max=d;
if(e/max)
max=e;
cout<<"Maximum is"<<max;
}
If you using JavaScript to test your Regex, try \\.
instead of \.
.
It acts on the same way because JS remove first backslash.
You need to put that code into the constructor of your class:
private Reminders reminder = new Reminders();
private dynamic defaultReminder;
public YourClass()
{
defaultReminder = reminder.TimeSpanText[TimeSpan.FromMinutes(15)];
}
The reason is that you can't use one instance variable to initialize another one using a field initializer.
When I moved the following lines from the head section to the end of the body section it worked.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
When a
and b
are 1-dimensional sequences, numpy.cov(a,b)[0][1]
is equivalent to your cov(a,b)
.
The 2x2 array returned by np.cov(a,b)
has elements equal to
cov(a,a) cov(a,b)
cov(a,b) cov(b,b)
(where, again, cov
is the function you defined above.)
You can use one of these methods to convert number to an ASCII / Unicode / UTF-16 character:
You can use these methods convert the value of the specified 32-bit signed integer to its Unicode character:
char c = (char)65;
char c = Convert.ToChar(65);
Also, ASCII.GetString
decodes a range of bytes from a byte array into a string:
string s = Encoding.ASCII.GetString(new byte[]{ 65 });
Keep in mind that, ASCIIEncoding
does not provide error detection. Any byte greater than hexadecimal 0x7F is decoded as the Unicode question mark ("?").
Yes you can, with range
[docs]:
for i in range(1, len(l)):
# i is an integer, you can access the list element with l[i]
but if you are accessing the list elements anyway, it's more natural to iterate over them directly:
for element in l:
# element refers to the element in the list, i.e. it is the same as l[i]
If you want to skip the the first element, you can slice the list [tutorial]:
for element in l[1:]:
# ...
can you do another for loop inside this for loop
Sure you can.
For convenience, here's an implementation that works for 0 to 70 arguments, and works in Visual Studio, GCC, and Clang. I believe it will work in Visual Studio 2010 and later, but have only tested it in VS2013.
#ifdef _MSC_VER // Microsoft compilers
# define GET_ARG_COUNT(...) INTERNAL_EXPAND_ARGS_PRIVATE(INTERNAL_ARGS_AUGMENTER(__VA_ARGS__))
# define INTERNAL_ARGS_AUGMENTER(...) unused, __VA_ARGS__
# define INTERNAL_EXPAND(x) x
# define INTERNAL_EXPAND_ARGS_PRIVATE(...) INTERNAL_EXPAND(INTERNAL_GET_ARG_COUNT_PRIVATE(__VA_ARGS__, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0))
# define INTERNAL_GET_ARG_COUNT_PRIVATE(_1_, _2_, _3_, _4_, _5_, _6_, _7_, _8_, _9_, _10_, _11_, _12_, _13_, _14_, _15_, _16_, _17_, _18_, _19_, _20_, _21_, _22_, _23_, _24_, _25_, _26_, _27_, _28_, _29_, _30_, _31_, _32_, _33_, _34_, _35_, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, _65, _66, _67, _68, _69, _70, count, ...) count
#else // Non-Microsoft compilers
# define GET_ARG_COUNT(...) INTERNAL_GET_ARG_COUNT_PRIVATE(0, ## __VA_ARGS__, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
# define INTERNAL_GET_ARG_COUNT_PRIVATE(_0, _1_, _2_, _3_, _4_, _5_, _6_, _7_, _8_, _9_, _10_, _11_, _12_, _13_, _14_, _15_, _16_, _17_, _18_, _19_, _20_, _21_, _22_, _23_, _24_, _25_, _26_, _27_, _28_, _29_, _30_, _31_, _32_, _33_, _34_, _35_, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, _65, _66, _67, _68, _69, _70, count, ...) count
#endif
static_assert(GET_ARG_COUNT() == 0, "GET_ARG_COUNT() failed for 0 arguments");
static_assert(GET_ARG_COUNT(1) == 1, "GET_ARG_COUNT() failed for 1 argument");
static_assert(GET_ARG_COUNT(1,2) == 2, "GET_ARG_COUNT() failed for 2 arguments");
static_assert(GET_ARG_COUNT(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70) == 70, "GET_ARG_COUNT() failed for 70 arguments");
From iOS 6.0 and above, toggling torch flash on/off,
- (void) toggleFlash {
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if ([device hasTorch] && [device hasFlash]){
[device lockForConfiguration:nil];
[device setFlashMode:(device.flashActive) ? AVCaptureFlashModeOff : AVCaptureFlashModeOn];
[device setTorchMode:(device.torchActive) ? AVCaptureTorchModeOff : AVCaptureTorchModeOn];
[device unlockForConfiguration];
}
}
P.S. This approach is only suggestible if you don't have on/off function. Remember there's one more option Auto
. i.e. AVCaptureFlashModeAuto
and AVCaptureTorchModeAuto
. To support auto mode as well, you've keep track of current mode and based on that change mode of flash & torch.
In case of SSL connections this may be caused by issue in older versions of nginx server that segfault during curl and Safari requests. This bug was fixed around version 1.10 of nginx but there is still a lot of older versions of nginx on the internet.
For nginx admins: adding ssl_session_cache shared:SSL:1m;
to http
block should solve the problem.
I'm aware that OP was asking for non-SSL case but since this is the top page in goole for "empty reply from server" issue, I'm leaving the SSL answer here as I was one of many that was banging my head against the wall with this issue.
You can access the fields by indexing the object array:
foreach (object[] item in selectedValues)
{
idTextBox.Text = item[0];
titleTextBox.Text = item[1];
contentTextBox.Text = item[2];
}
That said, you'd be better off storing the fields in a small class of your own if the number of items is not dynamic:
public class MyObject
{
public int Id { get; set; }
public string Title { get; set; }
public string Content { get; set; }
}
Then you can do:
foreach (MyObject item in selectedValues)
{
idTextBox.Text = item.Id;
titleTextBox.Text = item.Title;
contentTextBox.Text = item.Content;
}
If you're using the redis-rb gem then you can simply call:
your_redis_client.flushdb
You can write your own rule!
// add the rule here
$.validator.addMethod("valueNotEquals", function(value, element, arg){
return arg !== value;
}, "Value must not equal arg.");
// configure your validation
$("form").validate({
rules: {
SelectName: { valueNotEquals: "default" }
},
messages: {
SelectName: { valueNotEquals: "Please select an item!" }
}
});
I tried this code to accept files using Ajax and on submit file gets store using my php file. Code modified slightly to work. (Uploaded Files: PDF,JPG)
function verify1() {
jQuery.ajax({
type: 'POST',
url:"functions.php",
data: new FormData($("#infoForm1")[0]),
processData: false,
contentType: false,
success: function(returnval) {
$("#show1").html(returnval);
$('#show1').show();
}
});
}
Just print the file details and check. You will get Output. If error let me know.
Can't be done as it stands... The code
def myMethod(pParm1='1', pParm2='2'){
println "${pParm1}${pParm2}"
}
Basically makes groovy create the following methods:
Object myMethod( pParm1, pParm2 ) {
println "$pParm1$pParm2"
}
Object myMethod( pParm1 ) {
this.myMethod( pParm1, '2' )
}
Object myMethod() {
this.myMethod( '1', '2' )
}
One alternative would be to have an optional Map as the first param:
def myMethod( Map map = [:], String mandatory1, String mandatory2 ){
println "${mandatory1} ${mandatory2} ${map.parm1 ?: '1'} ${map.parm2 ?: '2'}"
}
myMethod( 'a', 'b' ) // prints 'a b 1 2'
myMethod( 'a', 'b', parm1:'value' ) // prints 'a b value 2'
myMethod( 'a', 'b', parm2:'2nd') // prints 'a b 1 2nd'
Obviously, documenting this so other people know what goes in the magical map
and what the defaults are is left to the reader ;-)
How I fixed this issue was I manually changed the code behind (from the menu View/code).
The section below should have as many number of pairs <TablixMember> </TablixMember>
as the number of rows are in the tablix. In my case I had more pairs <TablixMember> </TablixMember>
than the number of rows in the tablix. Also if you go to "Advanced mode" (to the right of "Column Groups") the number of static lines behind the "Row groups" should be equal to the number of rows in the tablix. The way to make it equal is changing the code.
<TablixRowHierarchy>
<TablixMembers>
<TablixMember>
<KeepWithGroup>After</KeepWithGroup>
<RepeatOnNewPage>true</RepeatOnNewPage>
</TablixMember>
<TablixMember>
<Group Name="Detail" />
</TablixMember>
</TablixMembers>
</TablixRowHierarchy>
Old thread, but the question is still relevant, so...
(1) The example in your question now DOES work in Firefox. However in addition to calling the event handler (which displays an alert), it ALSO clicks on the link, causing navigation (once the alert is dismissed).
(2) To JUST call the event handler (without triggering navigation) merely replace:
document.getElementById('linkid').click();
with
document.getElementById('linkid').onclick();
A clustered index actually describes the order in which records are physically stored on the disk, hence the reason you can only have one.
A Non-Clustered Index defines a logical order that does not match the physical order on disk.
{{convertToDate | date : dateformat}}
$rootScope.dateFormat = 'MM/dd/yyyy';
Setting RetainSameConnection property to True for Excel manager Worked for me .
Consider this simple problem:
class Number:
def __init__(self, number):
self.number = number
n1 = Number(1)
n2 = Number(1)
n1 == n2 # False -- oops
So, Python by default uses the object identifiers for comparison operations:
id(n1) # 140400634555856
id(n2) # 140400634555920
Overriding the __eq__
function seems to solve the problem:
def __eq__(self, other):
"""Overrides the default implementation"""
if isinstance(other, Number):
return self.number == other.number
return False
n1 == n2 # True
n1 != n2 # True in Python 2 -- oops, False in Python 3
In Python 2, always remember to override the __ne__
function as well, as the documentation states:
There are no implied relationships among the comparison operators. The truth of
x==y
does not imply thatx!=y
is false. Accordingly, when defining__eq__()
, one should also define__ne__()
so that the operators will behave as expected.
def __ne__(self, other):
"""Overrides the default implementation (unnecessary in Python 3)"""
return not self.__eq__(other)
n1 == n2 # True
n1 != n2 # False
In Python 3, this is no longer necessary, as the documentation states:
By default,
__ne__()
delegates to__eq__()
and inverts the result unless it isNotImplemented
. There are no other implied relationships among the comparison operators, for example, the truth of(x<y or x==y)
does not implyx<=y
.
But that does not solve all our problems. Let’s add a subclass:
class SubNumber(Number):
pass
n3 = SubNumber(1)
n1 == n3 # False for classic-style classes -- oops, True for new-style classes
n3 == n1 # True
n1 != n3 # True for classic-style classes -- oops, False for new-style classes
n3 != n1 # False
Note: Python 2 has two kinds of classes:
classic-style (or old-style) classes, that do not inherit from object
and that are declared as class A:
, class A():
or class A(B):
where B
is a classic-style class;
new-style classes, that do inherit from object
and that are declared as class A(object)
or class A(B):
where B
is a new-style class. Python 3 has only new-style classes that are declared as class A:
, class A(object):
or class A(B):
.
For classic-style classes, a comparison operation always calls the method of the first operand, while for new-style classes, it always calls the method of the subclass operand, regardless of the order of the operands.
So here, if Number
is a classic-style class:
n1 == n3
calls n1.__eq__
;n3 == n1
calls n3.__eq__
;n1 != n3
calls n1.__ne__
;n3 != n1
calls n3.__ne__
.And if Number
is a new-style class:
n1 == n3
and n3 == n1
call n3.__eq__
;n1 != n3
and n3 != n1
call n3.__ne__
.To fix the non-commutativity issue of the ==
and !=
operators for Python 2 classic-style classes, the __eq__
and __ne__
methods should return the NotImplemented
value when an operand type is not supported. The documentation defines the NotImplemented
value as:
Numeric methods and rich comparison methods may return this value if they do not implement the operation for the operands provided. (The interpreter will then try the reflected operation, or some other fallback, depending on the operator.) Its truth value is true.
In this case the operator delegates the comparison operation to the reflected method of the other operand. The documentation defines reflected methods as:
There are no swapped-argument versions of these methods (to be used when the left argument does not support the operation but the right argument does); rather,
__lt__()
and__gt__()
are each other’s reflection,__le__()
and__ge__()
are each other’s reflection, and__eq__()
and__ne__()
are their own reflection.
The result looks like this:
def __eq__(self, other):
"""Overrides the default implementation"""
if isinstance(other, Number):
return self.number == other.number
return NotImplemented
def __ne__(self, other):
"""Overrides the default implementation (unnecessary in Python 3)"""
x = self.__eq__(other)
if x is NotImplemented:
return NotImplemented
return not x
Returning the NotImplemented
value instead of False
is the right thing to do even for new-style classes if commutativity of the ==
and !=
operators is desired when the operands are of unrelated types (no inheritance).
Are we there yet? Not quite. How many unique numbers do we have?
len(set([n1, n2, n3])) # 3 -- oops
Sets use the hashes of objects, and by default Python returns the hash of the identifier of the object. Let’s try to override it:
def __hash__(self):
"""Overrides the default implementation"""
return hash(tuple(sorted(self.__dict__.items())))
len(set([n1, n2, n3])) # 1
The end result looks like this (I added some assertions at the end for validation):
class Number:
def __init__(self, number):
self.number = number
def __eq__(self, other):
"""Overrides the default implementation"""
if isinstance(other, Number):
return self.number == other.number
return NotImplemented
def __ne__(self, other):
"""Overrides the default implementation (unnecessary in Python 3)"""
x = self.__eq__(other)
if x is not NotImplemented:
return not x
return NotImplemented
def __hash__(self):
"""Overrides the default implementation"""
return hash(tuple(sorted(self.__dict__.items())))
class SubNumber(Number):
pass
n1 = Number(1)
n2 = Number(1)
n3 = SubNumber(1)
n4 = SubNumber(4)
assert n1 == n2
assert n2 == n1
assert not n1 != n2
assert not n2 != n1
assert n1 == n3
assert n3 == n1
assert not n1 != n3
assert not n3 != n1
assert not n1 == n4
assert not n4 == n1
assert n1 != n4
assert n4 != n1
assert len(set([n1, n2, n3, ])) == 1
assert len(set([n1, n2, n3, n4])) == 2
I wanted to add to Joseph Kingry's answer. He provided the solution but at first I couldn't get it to work either and got a result just like Adhip Gupta. And then I realized that the route has to exist in the first place and the parameters need to match the route exactly. So I had an id and then a text parameter for my route which also needed to be included too.
Html.ActionLink(article.Title, "Login", "Item", new { id = article.ArticleID, title = article.Title }, null)
A full answer: (Tested with r71)
To set a background color use:
renderer.setClearColor( 0xffffff ); // white background - replace ffffff with any hex color
If you want a transparent background you will have to enable alpha in your renderer first:
renderer = new THREE.WebGLRenderer( { alpha: true } ); // init like this
renderer.setClearColor( 0xffffff, 0 ); // second param is opacity, 0 => transparent
View the docs for more info.
<div>
<h1> Ok </h1>
<button type='button'>Button</button>
<div style="clear:both;"></div>
</div>
css
div {
background: purple;
}
div h1 {
text-align: center;
}
div button {
float: right;
margin-right:10px;
}
Encoding options for SHA256's 256 bits:
CHAR(44)
including padding characterCHAR(64)
BINARY(32)
the implementation in the cpp file should be in the form
gameObject::gameObject()
{
x = 0;
y = 0;
}
gameObject::gameObject(int inx, int iny)
{
x = inx;
y = iny;
}
gameObject::~gameObject()
{
//
}
int gameObject::add()
{
return x+y;
}
not within a class gameObject { } definition block
Tested with: log4j-ap 2.13.2, log4j-core 2.13.2.
<build> <resources> <resource> <filtering>false</filtering> <directory>src/main/resources</directory> <includes> <include>**/*.xml</include> </includes> </resource> </resources> </build>
It depends on if you mean '\n' (linefeed) or '\r\n' (carriage return + linefeed). The former is not the Windows default and will not show properly in some text editors (like Notepad).
You can do
sb.Append(Environment.NewLine);
sb.Append("\t");
or
sb.Append("\r\n\t");
res.json
eventually calls res.send
, but before that it:
json spaces
and json replacer
app settingsMaybe you can simply
$ sudo bash -c "echo vm.overcommit_memory=1 >> /etc/sysctl.conf"
$ sudo sysctl -p
It works for my case.
Reference: https://github.com/openai/gym/issues/110#issuecomment-220672405
For future readers, if this happens to you, your browser wants to use the old cached favicon.
Follow these steps:
Fixed.
$adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
$adsi.Children | where {$_.SchemaClassName -eq 'user'} | Foreach-Object {
$groups = $_.Groups() | Foreach-Object {$_.GetType().InvokeMember("Name", 'GetProperty', $null, $_, $null)}
$_ | Select-Object @{n='UserName';e={$_.Name}},@{n='Groups';e={$groups -join ';'}}
}
If notepad is already started, you should write:
// import the function in your class
[DllImport ("User32.dll")]
static extern int SetForegroundWindow(IntPtr point);
//...
Process p = Process.GetProcessesByName("notepad").FirstOrDefault();
if (p != null)
{
IntPtr h = p.MainWindowHandle;
SetForegroundWindow(h);
SendKeys.SendWait("k");
}
GetProcessesByName
returns an array of processes, so you should get the first one (or find the one you want).
If you want to start notepad
and send the key, you should write:
Process p = Process.Start("notepad.exe");
p.WaitForInputIdle();
IntPtr h = p.MainWindowHandle;
SetForegroundWindow(h);
SendKeys.SendWait("k");
The only situation in which the code may not work is when notepad
is started as Administrator and your application is not.
I was working with this a few days ago, and noticed that sometimes you will need to use the get()
function to print the results of your variable.
ie :
varnames = c('jan', 'feb', 'march')
file_names = list_files('path to multiple csv files saved on drive')
assign(varnames[1], read.csv(file_names[1]) # This will assign the variable
From there, if you try to print the variable varnames[1]
, it returns 'jan'.
To work around this, you need to do
print(get(varnames[1]))
SELECT DEPTNAME
FROM(SELECT D.DEPTNAME,COUNT(EMPID) AS TOTEMP
FROM DEPT AS D,EMPLOYEE AS E
WHERE D.DEPTID=E.DEPTID AND SALARY>1000
GROUP BY D.DEPTID
)
WHERE TOTEMP>2;
If you wanted a looser criterion for rejection, for example, to reject empty strings as well as nil, you could use:
[1, nil, 3, 0, ''].reject(&:blank?)
=> [1, 3, 0]
If you wanted to go further and reject zero values (or apply more complex logic to the process), you could pass a block to reject:
[1, nil, 3, 0, ''].reject do |value| value.blank? || value==0 end
=> [1, 3]
[1, nil, 3, 0, '', 1000].reject do |value| value.blank? || value==0 || value>10 end
=> [1, 3]
@coldmind answer is correct but lacks details.
The 'NOT NULL constraint failed' occurs when something tries to set None to the 'zipcode' property, while it has not been explicitely allowed.
It usually happens when:
1) your field has Null=False by default, so that the value in the database cannot be None (i.e. undefined) when the object is created and saved in the database (this happens after a objects_set.create() call or setting the .zipcode property and doing a .save() call).
For instance, if somewhere in your code an assignement results in:
model.zipcode = None
this error is raised
2) When creating or updating the database, Django is constrained to find a default value to fill the field, because Null=False by default. It does not find any because you haven't defined any. So this error can not only happen during code execution but also when creating the database?
3) Note that the same error would be returned of you define default=None, or if your default value with an incorrect type, for instance default='00000' instead of 00000 for your field (maybe can there be automatic conversion between char and integers, but I would advise against relying on it. Besides, explicit is better than implicit). Most likely an error would also be raised if the default value violates the max_length property, e.g. 123456
So you'll have to define the field by one of the following:
models.IntegerField(_('zipcode'), max_length=5, Null=True,
blank=True)
models.IntegerField(_('zipcode'), max_length=5, Null=False,
blank=True, default=00000)
models.IntegerField(_('zipcode'), max_length=5, blank=True,
default=00000)
and then make a migration (python3 manage.py makemigration ) and then migrate (python3 manage.py migrate).
For safety you can also delete the last failed migration files in <app_name>/migrations/, there are usually named after this pattern:
<NUMBER>_auto_<DATE>_<HOUR>.py
Finally, if you don't set Null=True, make sure that mode.zipcode = None is never done anywhere.
There is no need to write lots of code. Even it can be done just by one line of code. See here
Below is the one line code that returns the filename only and removes extension name:
<?php
echo pathinfo('logo.png')['filename'];
?>
It will print
logo
In 5.5
adding
Route::get('logout', 'Auth\LoginController@logout');
to my routes file works fine.
Essentially this will do the job: .replace(/\r\n/g,'\n').split('\n')
.
This works on Mac, Linux & Windows.
Code Snippets
Synchronous:
const { readFileSync } = require('fs');
const array = readFileSync('file.txt').toString().replace(/\r\n/g,'\n').split('\n');
for(let i of array) {
console.log(i);
}
Asynchronous:
With the fs.promises API that provides an alternative set of asynchronous file system methods that return Promise objects rather than using callbacks. (No need to promisify, you can use async-await with this too, available on and after Node.js version 10.0.0)
const { readFile } = require('fs').promises;
readFile('file.txt', function(err, data) {
if(err) throw err;
const arr = data.toString().replace(/\r\n/g,'\n').split('\n');
for(let i of arr) {
console.log(i);
}
});
More about \r & \n here: \r\n, \r and \n what is the difference between them?
Responsive Web design (RWD) is a Web design approach aimed at crafting sites to provide an optimal viewing experience
When you design your responsive website you should consider the size of the screen and not the device type. The media queries helps you do that.
If you want to style your site per device, you can use the user agent
value, but this is not recommended since you'll have to work hard to maintain your code for new devices, new browsers, browsers versions etc while when using the screen size, all of this does not matter.
You can see some standard resolutions in this link.
BUT, in my opinion, you should first design your website layout, and only then adjust it with media queries to fit possible screen sizes.
Why? As I said before, the screen resolutions variety is big and if you'll design a mobile version that is targeted to 320px your site won't be optimized to 350px screens or 400px screens.
TIPS
Example
I have a table with 5 columns. The data looks good when the screen size is bigger than 600px so I add a breakpoint at 600px and hides 1 less important column when the screen size is smaller. Devices with big screens such as desktops and tablets will display all the data, while mobile phones with small screens will display part of the data.
State of mind
Not directly related to the question but important aspect in responsive design. Responsive design also relate to the fact that the user have a different state of mind when using a mobile phone or a desktop. For example, when you open your bank's site in the evening and check your stocks you want as much data on the screen. When you open the same page in the your lunch break your probably want to see few important details and not all the graphs of last year.
Look up NR
and FNR
in the awk manual and then ask yourself what is the condition under which NR==FNR
in the following example:
$ cat file1
a
b
c
$ cat file2
d
e
$ awk '{print FILENAME, NR, FNR, $0}' file1 file2
file1 1 1 a
file1 2 2 b
file1 3 3 c
file2 4 1 d
file2 5 2 e
Just for others getting this error and looking for info on it, it is also thrown if you happen to pass a binding parameter and then never use it. I couldn't really find that stated clearly anywhere but had to prove it through trial and error.
Abstraction
and Encapsulation
by using a single generalized example------------------------------------------------------------------------------------------------------------------------------------
We all use calculator for calculation of complex problems !
As other answers indicate, on Windows you cannot delete a file that is open. However one other thing that can stop a file from being deleted on Windows is if it is is mmap'd to a MappedByteBuffer
(or DirectByteBuffer
) -- if so, the file cannot be deleted until the byte buffer is garbage collected. There is some relatively safe code for forcibly closing (cleaning) a DirectByteBuffer
before it is garbage collected here: https://github.com/classgraph/classgraph/blob/master/src/main/java/nonapi/io/github/classgraph/utils/FileUtils.java#L606 After cleaning the ByteBuffer
, you can delete the file. However, make sure you never use the ByteBuffer
again after cleaning it, or the JVM will crash.
You may actually go with ViewChild API
...
parent.ts
<button (click)="clicked()">click</button>
export class App {
@ViewChild(Child) vc:Child;
constructor() {
this.name = 'Angular2'
}
func(e) {
console.log(e)
}
clicked(){
this.vc.getName();
}
}
child.ts
export class Child implements OnInit{
onInitialized = new EventEmitter<Child>();
...
...
getName()
{
console.log('called by vc')
console.log(this.name);
}
}
In shell, you don't put a $ in front of a variable you're assigning. You only use $IP when you're referring to the variable.
#!/bin/bash
IP=$(curl automation.whatismyip.com/n09230945.asp)
echo "$IP"
sed "s/IP/$IP/" nsupdate.txt | nsupdate
You could descendingly order the tabele by id and limit the number of results to one:
SELECT id FROM tablename ORDER BY id DESC LIMIT 1
BUT: ORDER BY
rearranges the entire table for this request. So if you have a lot of data and you need to repeat this operation several times, I would not recommend this solution.
Here is some text from MSDN about unmanaged code.
Some library code needs to call into unmanaged code (for example, native code APIs, such as Win32). Because this means going outside the security perimeter for managed code, due caution is required.
Here is some other complimentary explication about Managed code:
For your problem:
I think it's because NUnit execute your code for UnitTesting and might have some part of it that is unmanaged. But I am not sure about it, so do not take this for gold. I am sure someone will be able to give you more information about it. Hope it helps!
Use ajax, a simple example,
HTML
<button id="button">Get Data</button>
Javascript
var button = document.getElementById("button");
button.addEventListener("click" ajaxFunction, false);
var ajaxFunction = function () {
// ajax code here
}
Alternatively look into jquery ajax
http://api.jquery.com/jQuery.ajax/
For run all lines of GridView don't use for
loop, use foreach
loop like:
foreach (GridViewRow row in yourGridName.Rows) //Running all lines of grid
{
if (row.RowType == DataControlRowType.DataRow)
{
CheckBox chkRow = (row.Cells[0].FindControl("chkRow") as CheckBox);
if (chkRow.Checked)
{
//if checked do something
}
}
}
All previous answers suggest grep and find. But there is another way: Use Midnight Commander
It is a free utility (30 years old, proven by time) which is visual without being GUI. It has tons of functions, and finding files is just one of them.
Warnings you can recover from. Errors you can't. That's my heuristic, others may have other ideas.
For example, let's say you enter/import the name "Angela Müller"
into your application (note the umlaut over the u
). Your code/database may be English only (though it probably shouldn't be in this day and age) and could therefore warn that all "unusual" characters had been converted to regular English characters.
Contrast that with trying to write that information to the database and getting back a network down message for 60 seconds straight. That's more of an error than a warning.
If you want want the end Collection
to be in the form of Set
and if you want to define your own natural order
rather than that of TreeSet
then -
1. Convert the HashSet
into List
2. Custom sort the List
using Comparator
3. Convert back the List
into LinkedHashSet
to maintain order
4. Display the LinkedHashSet
Sample program -
package demo31;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
public class App26 {
public static void main(String[] args) {
Set<String> set = new HashSet<>();
addElements(set);
List<String> list = new LinkedList<>();
list = convertToList(set);
Collections.sort(list, new Comparator<String>() {
@Override
public int compare(String s1, String s2) {
int flag = s2.length() - s1.length();
if(flag != 0) {
return flag;
} else {
return -s1.compareTo(s2);
}
}
});
Set<String> set2 = new LinkedHashSet<>();
set2 = convertToSet(list);
displayElements(set2);
}
public static void addElements(Set<String> set) {
set.add("Hippopotamus");
set.add("Rhinocerous");
set.add("Zebra");
set.add("Tiger");
set.add("Giraffe");
set.add("Cheetah");
set.add("Wolf");
set.add("Fox");
set.add("Dog");
set.add("Cat");
}
public static List<String> convertToList(Set<String> set) {
List<String> list = new LinkedList<>();
for(String element: set) {
list.add(element);
}
return list;
}
public static Set<String> convertToSet(List<String> list) {
Set<String> set = new LinkedHashSet<>();
for(String element: list) {
set.add(element);
}
return set;
}
public static void displayElements(Set<String> set) {
System.out.println(set);
}
}
Output -
[Hippopotamus, Rhinocerous, Giraffe, Cheetah, Zebra, Tiger, Wolf, Fox, Dog, Cat]
Here the collection has been sorted as -
First - Descending order of String
length
Second - Descending order of String
alphabetical hierarchy
When I've done this, rather than fiddling the original migration, I create a new one with just the add column in the up section and a drop column in the down section.
You can change the original and rerun it if you migrate down between, but in this case I think that's made a migration that won't work properly.
As currently posted, you're adding the column and then creating the table.
If you change the order it might work. Or, as you're modifying an existing migration, just add it to the create table instead of doing a separate add column.
You can include the script file directly in your page/master page, etc using:
<script type="text/javascript" src="/scripts/jquery.min.js"></script>
Us use a Content Delivery network like Google or Microsoft:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
or:
<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.js" type="text/javascript"></script>
In general suppressing warnings is not the best solution as you may want to be warned when some unexpected input will be provided.
Solution below is wrapper for maintaining just NA during data type conversion. Doesn't require any package.
as.num = function(x, na.strings = "NA") {
stopifnot(is.character(x))
na = x %in% na.strings
x[na] = 0
x = as.numeric(x)
x[na] = NA_real_
x
}
as.num(c("1", "2", "X"), na.strings="X")
#[1] 1 2 NA
The skinny is that a CPU loads data from memory addresses, stores data to memory addresses, and execute instructions sequentially out of memory addresses, with some conditional jumps in the sequence of instructions processed. Each of these three categories of instructions involves computing an address to a memory cell to be used in the machine instruction. Because machine instructions are of a variable length depending on the particular instruction involved, and because we string a variable length of them together as we build our machine code, there is a two step process involved in calculating and building any addresses.
First we laying out the allocation of memory as best we can before we can know what exactly goes in each cell. We figure out the bytes, or words, or whatever that form the instructions and literals and any data. We just start allocating memory and building the values that will create the program as we go, and note down anyplace we need to go back and fix an address. In that place we put a dummy to just pad the location so we can continue to calculate memory size. For example our first machine code might take one cell. The next machine code might take 3 cells, involving one machine code cell and two address cells. Now our address pointer is 4. We know what goes in the machine cell, which is the op code, but we have to wait to calculate what goes in the address cells till we know where that data will be located, i.e. what will be the machine address of that data.
If there were just one source file a compiler could theoretically produce fully executable machine code without a linker. In a two pass process it could calculate all of the actual addresses to all of the data cells referenced by any machine load or store instructions. And it could calculate all of the absolute addresses referenced by any absolute jump instructions. This is how simpler compilers, like the one in Forth work, with no linker.
A linker is something that allows blocks of code to be compiled separately. This can speed up the overall process of building code, and allows some flexibility with how the blocks are later used, in other words they can be relocated in memory, for example adding 1000 to every address to scoot the block up by 1000 address cells.
So what the compiler outputs is rough machine code that is not yet fully built, but is laid out so we know the size of everything, in other words so we can start to calculate where all of the absolute addresses will be located. the compiler also outputs a list of symbols which are name/address pairs. The symbols relate a memory offset in the machine code in the module with a name. The offset being the absolute distance to the memory location of the symbol in the module.
That's where we get to the linker. The linker first slaps all of these blocks of machine code together end to end and notes down where each one starts. Then it calculates the addresses to be fixed by adding together the relative offset within a module and the absolute position of the module in the bigger layout.
Obviously I've oversimplified this so you can try to grasp it, and I have deliberately not used the jargon of object files, symbol tables, etc. which to me is part of the confusion.
The first section is called a protocol and yes you can register your own. On Windows (where I'm assuming you're doing this given the C# tag - sorry Mono fans), it's done via the registry.
You can't influence neither type (tab/window) nor dimensions that way. You'll have to use JavaScript's window.open() for that.
<span onclick="event.stopPropagation(); alert('you clicked inside the header');">something inside the header</span>
For IE: window.event.cancelBubble = true
<span onclick="window.event.cancelBubble = true; alert('you clicked inside the header');">something inside the header</span>
You can customize the JsonSerializerSettings
by using the Formatters.JsonFormatter.SerializerSettings
property in the HttpConfiguration
object.
For example, you could do that in the Application_Start() method:
protected void Application_Start()
{
HttpConfiguration config = GlobalConfiguration.Configuration;
config.Formatters.JsonFormatter.SerializerSettings.Formatting =
Newtonsoft.Json.Formatting.Indented;
}
On MySQL 5.7 and Ubuntu 16.04, edit the file mysql.cnf.
$ sudo nano /etc/mysql/conf.d/mysql.cnf
Include the sql_mode like the following and save the file.
[mysql]
sql_mode=IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Observe that, in my case, I removed the mode STRICT_TRANS_TABLES and the ONLY_FULL_GROUP_BY.
Doing this, it will save the mode configuration permanently. Differently if you just update the @@sql_mode through MySQL, because it will reset on machine/service restart.
After that, to the modified configuration take in action, restart the mysql service:
$ sudo service mysql restart
Try to access the mysql:
$ mysql -u user_name -p
If you are able to login and access MySQL console, it is ok. Great!
BUT, if like me, you face the error "unknown variable sql_mode", which indicates that sql_mode is an option for mysqld, you will have to go back, edit the file mysql.cnf again and change the [mysql]
to [mysqld]
. Restart the MySQL service and do a last test trying to login on MySQL console. Here it is!
A neat trick is to have a div
with the word Contact and reveal the email address only when the user moves the mouse over it. E-mail can be Base64-encoded for extra protection.
Here's how:
<div id="contacts">Contacts</div>
<script>
document.querySelector("#contacts").addEventListener("mouseover", (event) => {
// Base64-encode your email and provide it as argument to atob()
event.target.textContent = atob('aW5mb0BjbGV2ZXJpbmcuZWU=')
});
</script>
I have done it like this:
package com.palewar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
public class ThreadActivity extends Activity {
static ProgressDialog dialog;
private Thread downloadThread;
final static Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
dialog.dismiss();
}
};
protected void onDestroy() {
super.onDestroy();
if (dialog != null && dialog.isShowing()) {
dialog.dismiss();
dialog = null;
}
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
downloadThread = (Thread) getLastNonConfigurationInstance();
if (downloadThread != null && downloadThread.isAlive()) {
dialog = ProgressDialog.show(ThreadActivity.this, "",
"Signing in...", false);
}
dialog = ProgressDialog.show(ThreadActivity.this, "",
"Signing in ...", false);
downloadThread = new MyThread();
downloadThread.start();
// processThread();
}
// Save the thread
@Override
public Object onRetainNonConfigurationInstance() {
return downloadThread;
}
static public class MyThread extends Thread {
@Override
public void run() {
try {
// Simulate a slow network
try {
new Thread().sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
handler.sendEmptyMessage(0);
} finally {
}
}
}
}
You can also try and let me know it works for you or not
You can use split function.
SELECT
(select top 1 item from dbo.Split(FullName,',') where id=1 ) as Name,
(select top 1 item from dbo.Split(FullName,',') where id=2 ) as Surname,
FROM MyTbl
DatePicker dp = (DatePicker) findViewById(R.id.datePicker1);
dp.setMaxDate(new Date().getTime());
<body>
<div style=" display: table; margin: 250 auto;">
In center
</div>
</body>
If you want to change the vertical position, change the value of 250 and you can arrange the content as per your need. There is no need to give the width and other parameters.
Two things you can do, return an object
somethingAsync()
.then( afterSomething )
.then( afterSomethingElse );
function processAsync (amazingData) {
//processSomething
return {
amazingData: amazingData,
processedData: processedData
};
}
function afterSomething( amazingData ) {
return processAsync( amazingData );
}
function afterSomethingElse( dataObj ) {
let amazingData = dataObj.amazingData,
processedData = dataObj.proccessedData;
}
Use the scope!
var amazingData;
somethingAsync()
.then( afterSomething )
.then( afterSomethingElse )
function afterSomething( returnedAmazingData ) {
amazingData = returnedAmazingData;
return processAsync( amazingData );
}
function afterSomethingElse( processedData ) {
//use amazingData here
}
If you dont want to use two way data binding. You can do this.
In HTML
<form (ngSubmit)="onSubmit($event)">
<input name="player" value="Name">
</form>
In component
onSubmit(event: any) {
return event.target.player.value;
}
GUI-driven approach: Open the docker desktop tool (that usually comes with Docker):
Surprisingly enough, all i did was "Clean" my project (shift+cmd+K) and it worked. Did seem to be related to the certificate though.
One less than ideal workaround is to use the 2008 GUI against the 2012 database for copying query results. Some functionality like "script table as CREATE" does not work, but you can run queries and copy paste the results into Excel etc from a 2012 database with no issues.
Microsoft needs to fix this!
You can use Java String method called replace, which will replace all characters matching the first parameter with the second parameter:
String a = "Cool";
a = a.replace("o","");
The -nc
, --no-clobber
option isn't the best solution as newer files will not be downloaded. One should use -N
instead which will download and overwrite the file only if the server has a newer version, so the correct answer is:
wget -N http://www.example.com/images/misc/pic.png
Then running Wget with -N, with or without
-r
or-p
, the decision as to whether or not to download a newer copy of a file depends on the local and remote timestamp and size of the file.-nc
may not be specified at the same time as-N
.
-N
,--timestamping
: Turn on time-stamping.
I like to use -v
for verbose mode.
It'll give you the commit id, comments and all affected files.
svn log -v --limit 4
Example of output:
I added some migrations and deleted a test xml file ------------------------------------------------------------------------ r58687 | mr_x | 2012-04-02 15:31:31 +0200 (Mon, 02 Apr 2012) | 1 line Changed paths: A /trunk/java/App/src/database/support A /trunk/java/App/src/database/support/MIGRATE A /trunk/java/App/src/database/support/MIGRATE/remove_device.sql D /trunk/java/App/src/code/test.xml
Imagine, bind is not available. you can easily construct it as follow :
var someFunction=...
var objToBind=....
var bindHelper = function (someFunction, objToBind) {
return function() {
someFunction.apply( objToBind, arguments );
};
}
bindHelper(arguments);
What you describe isn't overriding. If you don't specify a default constructor, the compiler will create a default constructor. If it's a subclass, it will call the default parent constructor(super()), it will also initialize all instance variables to a default value determined by the type's default value(0 for numeric types, false for booleans, or null for objects).
Overriding happens when a subclass has the same name, number/type of parameters, and the same return type as an instance method of the superclass. In this case, the subclass will override the superclass's method. Information on overriding here.
The JMeter docs say the following:
The summary report creates a table row for each differently named request in your test. This is similar to the Aggregate Report , except that it uses less memory. The thoughput is calculated from the point of view of the sampler target (e.g. the remote server in the case of HTTP samples). JMeter takes into account the total time over which the requests have been generated. If other samplers and timers are in the same thread, these will increase the total time, and therefore reduce the throughput value. So two identical samplers with different names will have half the throughput of two samplers with the same name. It is important to choose the sampler labels correctly to get the best results from the Report.
Times are in milliseconds.
matcher.find()
does not find all matches, only the next match.
long matches = matcher.results().count();
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount()
is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
String hello = "HelloxxxHelloxxxHello";
Pattern pattern = Pattern.compile("Hello");
Matcher matcher = pattern.matcher(hello);
int count = 0;
while (matcher.find())
count++;
System.out.println(count); // prints 3
}
}
When counting matches of aa
in aaaa
the above snippet will give you 2.
aaaa
aa
aa
To get 3 matches, i.e. this behavior:
aaaa
aa
aa
aa
You have to search for a match at index <start of last match> + 1
as follows:
String hello = "aaaa";
Pattern pattern = Pattern.compile("aa");
Matcher matcher = pattern.matcher(hello);
int count = 0;
int i = 0;
while (matcher.find(i)) {
count++;
i = matcher.start() + 1;
}
System.out.println(count); // prints 3
I needed to extract a few lines in a log file and this post was helpful in solving my issue, so i thought of adding it here. If someone needs to extract muliple lines, you can use the script to get the index of the a word matching that string (i'm searching for "Root") and extract content in all lines.
$File_content = Get-Content "Path of the text file"
$result = @()
foreach ($val in $File_content){
$Index_No = $val.IndexOf("Root")
$result += $val.substring($Index_No)
}
$result | Select-Object -Unique
Cheers..!
if Matcher is initialized with str
, after the match, you can get the part after the match with
str.substring(matcher.end())
Sample Code:
final String str = "Some lame sentence that is awesome";
final Matcher matcher = Pattern.compile("sentence").matcher(str);
if(matcher.find()){
System.out.println(str.substring(matcher.end()).trim());
}
Output:
that is awesome
I'll describe the way I've stored files, in SQL Server and Oracle. It largely depends on how you are getting the file, in the first place, as to how you will get its contents, and it depends on which database you are using for the content in which you will store it for how you will store it. These are 2 separate database examples with 2 separate methods of getting the file that I used.
SQL Server
Short answer: I used a base64 byte string I converted to a byte[]
and store in a varbinary(max)
field.
Long answer:
Say you're uploading via a website, so you're using an <input id="myFileControl" type="file" />
control, or React DropZone. To get the file, you're doing something like var myFile = document.getElementById("myFileControl")[0];
or myFile = this.state.files[0];
.
From there, I'd get the base64 string using code here: Convert input=file to byte array (use function UploadFile2
).
Then I'd get that string, the file name (myFile.name
) and type (myFile.type
) into a JSON object:
var myJSONObj = {
file: base64string,
name: myFile.name,
type: myFile.type,
}
and post the file to an MVC server backend using XMLHttpRequest, specifying a Content-Type of application/json
: xhr.send(JSON.stringify(myJSONObj);
. You have to build a ViewModel to bind it with:
public class MyModel
{
public string file { get; set; }
public string title { get; set; }
public string type { get; set; }
}
and specify [FromBody]MyModel myModelObj
as the passed in parameter:
[System.Web.Http.HttpPost] // required to spell it out like this if using ApiController, or it will default to System.Mvc.Http.HttpPost
public virtual ActionResult Post([FromBody]MyModel myModelObj)
Then you can add this into that function and save it using Entity Framework:
MY_ATTACHMENT_TABLE_MODEL tblAtchm = new MY_ATTACHMENT_TABLE_MODEL();
tblAtchm.Name = myModelObj.name;
tblAtchm.Type = myModelObj.type;
tblAtchm.File = System.Convert.FromBase64String(myModelObj.file);
EntityFrameworkContextName ef = new EntityFrameworkContextName();
ef.MY_ATTACHMENT_TABLE_MODEL.Add(tblAtchm);
ef.SaveChanges();
tblAtchm.File = System.Convert.FromBase64String(myModelObj.file);
being the operative line.
You would need a model to represent the database table:
public class MY_ATTACHMENT_TABLE_MODEL
{
[Key]
public byte[] File { get; set; } // notice this change
public string Name { get; set; }
public string Type { get; set; }
}
This will save the data into a varbinary(max)
field as a byte[]
. Name
and Type
were nvarchar(250)
and nvarchar(10)
, respectively. You could include size by adding it to your table as an int
column & MY_ATTACHMENT_TABLE_MODEL
as public int Size { get; set;}
, and add in the line tblAtchm.Size = System.Convert.FromBase64String(myModelObj.file).Length;
above.
Oracle
Short answer: Convert it to a byte[]
, assign it to an OracleParameter
, add it to your OracleCommand
, and update your table's BLOB
field using a reference to the parameter's ParameterName
value: :BlobParameter
Long answer:
When I did this for Oracle, I was using an OpenFileDialog
and I retrieved and sent the bytes/file information this way:
byte[] array;
OracleParameter param = new OracleParameter();
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.Filter = "Image Files (*.jpg, *.jpeg, *.jpe)|*.jpg;*.jpeg;*.jpe|Document Files (*.doc, *.docx, *.pdf)|*.doc;*.docx;*.pdf"
if (dlg.ShowDialog().Value == true)
{
string fileName = dlg.FileName;
using (FileStream fs = File.OpenRead(fileName)
{
array = new byte[fs.Length];
using (BinaryReader binReader = new BinaryReader(fs))
{
array = binReader.ReadBytes((int)fs.Length);
}
// Create an OracleParameter to transmit the Blob
param.OracleDbType = OracleDbType.Blob;
param.ParameterName = "BlobParameter";
param.Value = array; // <-- file bytes are here
}
fileName = fileName.Split('\\')[fileName.Split('\\').Length-1]; // gets last segment of the whole path to just get the name
string fileType = fileName.Split('.')[1];
if (fileType == "doc" || fileType == "docx" || fileType == "pdf")
fileType = "application\\" + fileType;
else
fileType = "image\\" + fileType;
// SQL string containing reference to BlobParameter named above
string sql = String.Format("INSERT INTO YOUR_TABLE (FILE_NAME, FILE_TYPE, FILE_SIZE, FILE_CONTENTS, LAST_MODIFIED) VALUES ('{0}','{1}',{2},:BlobParamerter, SYSDATE)", fileName, fileType, array.Length);
// Do Oracle Update
RunCommand(sql, param);
}
And inside the Oracle update, done with ADO:
public void RunCommand(string sql, OracleParameter param)
{
OracleConnection oraConn = null;
OracleCommand oraCmd = null;
try
{
string connString = GetConnString();
oraConn = OracleConnection(connString);
using (oraConn)
{
if (OraConnection.State == ConnectionState.Open)
OraConnection.Close();
OraConnection.Open();
oraCmd = new OracleCommand(strSQL, oraConnection);
// Add your OracleParameter
if (param != null)
OraCommand.Parameters.Add(param);
// Execute the command
OraCommand.ExecuteNonQuery();
}
}
catch (OracleException err)
{
// handle exception
}
finally
{
OraConnction.Close();
}
}
private string GetConnString()
{
string host = System.Configuration.ConfigurationManager.AppSettings["host"].ToString();
string port = System.Configuration.ConfigurationManager.AppSettings["port"].ToString();
string serviceName = System.Configuration.ConfigurationManager.AppSettings["svcName"].ToString();
string schemaName = System.Configuration.ConfigurationManager.AppSettings["schemaName"].ToString();
string pword = System.Configuration.ConfigurationManager.AppSettings["pword"].ToString(); // hopefully encrypted
if (String.IsNullOrEmpty(host) || String.IsNullOrEmpty(port) || String.IsNullOrEmpty(serviceName) || String.IsNullOrEmpty(schemaName) || String.IsNullOrEmpty(pword))
{
return "Missing Param";
}
else
{
pword = decodePassword(pword); // decrypt here
return String.Format(
"Data Source=(DESCRIPTION =(ADDRESS = ( PROTOCOL = TCP)(HOST = {2})(PORT = {3}))(CONNECT_DATA =(SID = {4})));User Id={0};Password={1};",
user,
pword,
host,
port,
serviceName
);
}
}
And the datatype for the FILE_CONTENTS
column was BLOB
, the FILE_SIZE
was NUMBER(10,0)
, LAST_MODIFIED
was DATE
, and the rest were NVARCHAR2(250)
.
Either manually, like
var str = "www.test.com",
rmv = "www.";
str = str.slice( str.indexOf( rmv ) + rmv.length );
or just use .replace()
:
str = str.replace( rmv, '' );
Within Crystal, you can do it by creating a formula that uses the ToNumber
function. It might be a good idea to code for the possibility that the field might include non-numeric data - like so:
If NumericText ({field}) then ToNumber ({field}) else 0
Alternatively, you might find it easier to convert the field's datatype within the query used in the report.
tofile
is a convenient function to do this:
import numpy as np
a = np.asarray([ [1,2,3], [4,5,6], [7,8,9] ])
a.tofile('foo.csv',sep=',',format='%10.5f')
The man page has some useful notes:
This is a convenience function for quick storage of array data. Information on endianness and precision is lost, so this method is not a good choice for files intended to archive data or transport data between machines with different endianness. Some of these problems can be overcome by outputting the data as text files, at the expense of speed and file size.
Note. This function does not produce multi-line csv files, it saves everything to one line.
I'll throw this in as an alternative just for the heck of it, even though it's pretty much useless when compared to " ".join(my_list)
for strings. For non-strings (such as an array of ints) this may be better:
" ".join(str(item) for item in my_list)
I think this would do it...
def validIP(address):
parts = address.split(".")
if len(parts) != 4:
return False
for item in parts:
if not 0 <= int(item) <= 255:
return False
return True
Go in the build.gradle and set the version code and name inside the defaultConfig element
defaultConfig { minSdkVersion 9 targetSdkVersion 19 versionCode 1 versionName "1.0" }
I'm no Java expert, but I would presume that the .hasNext
, .hasNextLine
and .hasNextByte
all use and increment the same file position indicator. You'll need to reset that, either by creating a new Scanner as Aashray mentioned, or using a RandomAccessFile and calling file.seek(0);
after each loop.
In a case where you are using a custom cell type, say ArticleCell, you might get an error that says :
Initializer for conditional binding must have Optional type, not 'ArticleCell'
You will get this error if your line of code looks something like this:
if let cell = tableView.dequeReusableCell(withIdentifier: "ArticleCell",for indexPath: indexPath) as! ArticleCell
You can fix this error by doing the following :
if let cell = tableView.dequeReusableCell(withIdentifier: "ArticleCell",for indexPath: indexPath) as ArticleCell?
If you check the above, you will see that the latter is using optional casting for a cell of type ArticleCell.
Maybe you're talking about the Reverse Polish Notation? If yes you can find on wikipedia a very detailed step-to-step example for the conversion; if not I have no idea what you're asking :(
You might also want to read my answer to another question where I provided such an implementation: C++ simple operations (+,-,/,*) evaluation class
Try doing it from the command like:
cat dump.sql | sqlite3 database.db
This will obviously only work with SQL statements in dump.sql. I'm not sure how to import a CSV.
Try this .{3,} this will match any characher except new line (\n)
Take a look at the NE-ONE Network Emulator which allows you to configure bandwidth, latency, packet loss, packet reordering, packet duplication, packet fragmentation, network congestion and many more impairments so that you can create real-world network conditions in the lab. Different impairments can be configured for the up and downlink so you could have a really good uplink but a really bad downlink experience, great for seeing how the app handles TCP queuing because the acks don't come back in a timely manner and the overall latency therefore increases!
There's an overview video here http://www.youtube.com/watch?v=DwtqlE7LcrQ specifically aimed at game developers, but it shows what it's about. NE-ONE is configured using a web browser so it's really easy to get installed and configured - you don't need to be a network guru :-)
There's a hardware version - http://www.itrinegy.com/index.php/products/network-emulators/ne-one - or you can download a Virtual Appliance (software) version that runs under VMware ESXi Server. The Virtual Appliance can be download from VMware's Solution Exchange - solutionexchange.vmware.com/store/products/ne-one-flex-network-emulator
You haven't mentioned a language, so I'm going to give you some some hints how to do it with the straight Windows API in C.
First, open a connection to the printer with OpenPrinter
. Next, start a document with StartDocPrinter
having the pDatatype
field of the DOC_INFO_1
structure set to "RAW"
- this tells the printer driver not to encode anything going to the printer, but to pass it along unchanged. Use StartPagePrinter
to indicate the first page, WritePrinter
to send the data to the printer, and close it with EndPagePrinter
, EndDocPrinter
and ClosePrinter
when done.
button.titleLabel?.lineBreakMode = .byWordWrapping
button.titleLabel?.textAlignment = .center
button.setTitle("Button\nTitle",for: .normal)
I think the easiest thing is to sort the dict by key and save the sorted key:value pair in a new dict.
dict1 = {'renault': 3, 'ford':4, 'volvo': 1, 'toyota': 2}
dict2 = {} # create an empty dict to store the sorted values
for key in sorted(dict1.keys()):
if not key in dict2: # Depending on the goal, this line may not be neccessary
dict2[key] = dict1[key]
To make it clearer:
dict1 = {'renault': 3, 'ford':4, 'volvo': 1, 'toyota': 2}
dict2 = {} # create an empty dict to store the sorted values
for key in sorted(dict1.keys()):
if not key in dict2: # Depending on the goal, this line may not be neccessary
value = dict1[key]
dict2[key] = value
This code may be helpful for you.
from tkinter import filedialog
from tkinter import *
root = Tk()
root.withdraw()
folder_selected = filedialog.askdirectory()
Give a different alias
SELECT Convert(varchar,A.InsertDate,103) as converted_Tran_Date from table as A
order by A.InsertDate
Deployment Target version change to a lower one helped for me:
Window -> Devices and Simulators -> Simulators. Check what are the latest versions of existing simulators.
Then go to your project's Target. Under Deployment Info, change Target to the version you saw the latest within your simulators. Mine was set to iOS 13.6 when the simulator was iOS 13.5 only.
I found very good explanation about .la files here http://openbooks.sourceforge.net/books/wga/dealing-with-libraries.html
Summary (The way I understood): Because libtool deals with static and dynamic libraries internally (through --diable-shared or --disable-static) it creates a wrapper on the library files it builds. They are treated as binary library files with in libtool supported environment.
I needed to find the position of an element inside a ListView and used this snippet that works kind of like .offset
:
const UIManager = require('NativeModules').UIManager;
const handle = React.findNodeHandle(this.refs.myElement);
UIManager.measureLayoutRelativeToParent(
handle,
(e) => {console.error(e)},
(x, y, w, h) => {
console.log('offset', x, y, w, h);
});
This assumes I had a ref='myElement'
on my component.
No need to do any of that. It is a visual studio error.
just go here: http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=31354
and download the appropriate fix for your computer's OS
close visual studio, run the fix and then restart VS
The code should run without any error.
Another version with alpha
#define UIColorFromRGBA(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF000000) >> 24))/255.0 green:((float)((rgbValue & 0xFF0000) >> 16))/255.0 blue:((float)((rgbValue & 0xFF00) >> 8 ))/255.0 alpha:((float)((rgbValue & 0xFF))/255.0)]
That's the default margin/padding of the body
element.
Some browsers have a default margin, some a default padding, and both are applied as a padding in the body element.
Add this to your CSS:
body { margin: 0; padding: 0; }
Your layout in xml probably already has a layout_margin(Left|Right|etc) attribute in it, which means you need to access the object generated by that xml and modify it.
I found this solution to be very simple:
ViewGroup.MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) mTextView
.getLayoutParams();
mlp.setMargins(adjustmentPxs, 0, 0, 0);
break;
Get the LayoutParams instance of your textview, downcast it to MarginLayoutParams, and use the setMargins method to set the margins.
In the context of the asked question and in reply to the comment by @sereja1c, creating SERIAL
implicitly creates sequences, so for the above example-
CREATE TABLE foo (id SERIAL,bar varchar);
CREATE TABLE
would implicitly create sequence foo_id_seq
for serial column foo.id
. Hence, SERIAL
[4 Bytes] is good for its ease of use unless you need a specific datatype for your id.
Based on existing responses on this post, this simplify the implementation :)
namespace System
{
public static class BaseTypesExtensions
{
/// <summary>
/// Just a simple wrapper to simplify the process of splitting a string using another string as a separator
/// </summary>
/// <param name="s"></param>
/// <param name="pattern"></param>
/// <returns></returns>
public static string[] Split(this string s, string separator)
{
return s.Split(new string[] { separator }, StringSplitOptions.None);
}
}
}
If your needing/wanting to use the ConfigurationManager
class...
You may need to load System.Configuration.ConfigurationManager
by Microsoft via NuGet Package Manager
Tools->NuGet Package Manager->Manage NuGet Packages for Solution...
One thing worth noting from the docs...
If your application needs read-only access to its own configuration, we recommend that you use the GetSection(String) method. This method provides access to the cached configuration values for the current application, which has better performance than the Configuration class.
Just to suggest another way without using if statements, you can use the get()
method for DataFrame
s. For performing the sum based on the question:
df['sum'] = df.get('A', df['B']) + df['C']
The DataFrame
get method has similar behavior as python dictionaries.
I was having a similar issue with xcode 10.3. xCode was unable to recognise files from pods. Here I have solved this way:
I posted an answer to this already when someone else asked the same question (see How to bring back "Browser mode" in IE11?).
Read my answer there for a fuller explaination, but in short:
They removed it deliberately, because compat mode is not actually really very good for testing compatibility.
If you really want to test for compatibility with any given version of IE, you need to test in a real copy of that IE version. MS provide free VMs on http://modern.ie/ for you to use for this purpose.
The only way to get compat mode in IE11 is to set the X-UA-Compatible
header. When you have this and the site defaults to compat mode, you will be able to set the mode in dev tools, but only between edge or the specified compat mode; other modes will still not be available.
Simply put div
inside the td
and set the following styles of div
:
margin-bottom: 20px;
height: 40px;
float: left;
width: 100%;
In your case you can use __FILE__
variable !
It should help.
It is one of predefined.
Read more about predefined constants in PHP http://php.net/manual/en/language.constants.predefined.php
There are several levels of managing persistent data, depending on your needs:
-v host-path:container-path
to persist container directory data to a host directory.--volumes-from
to mount that data into your application container.I'm using ui-bootstrap-tpls.js and what worked for me is that I searched in the whole project for fade and found 3 places where this was being set in the mentioned file.
I went through the find results and saw that 2 of the changes were being done on the modal and the other one was being set on the tool tip animation. Note the difference in below code
'uib-modal-animation-class': 'fade'
'tooltip-animation-class="fade"'
What I did to solve the issue was to add the show class for the uib-modal
'uib-modal-animation-class': 'fade show'
SELECT SUBSTR(TRIM(rtp.role),1,12) AS ROLE
, SUBSTR(rp.grantee,1,16) AS GRANTEE
, SUBSTR(TRIM(rtp.privilege),1,12) AS PRIVILEGE
, SUBSTR(TRIM(rtp.owner),1,12) AS OWNER
, SUBSTR(TRIM(rtp.table_name),1,28) AS TABLE_NAME
, SUBSTR(TRIM(rtp.column_name),1,20) AS COLUMN_NAME
, SUBSTR(rtp.common,1,4) AS COMMON
, SUBSTR(rtp.grantable,1,4) AS GRANTABLE
, SUBSTR(rp.default_role,1,16) AS DEFAULT_ROLE
, SUBSTR(rp.admin_option,1,4) AS ADMIN_OPTION
FROM role_tab_privs rtp
LEFT JOIN dba_role_privs rp
ON (rtp.role = rp.granted_role)
WHERE ('&1' IS NULL OR UPPER(rtp.role) LIKE UPPER('%&1%'))
AND ('&2' IS NULL OR UPPER(rp.grantee) LIKE UPPER('%&2%'))
AND ('&3' IS NULL OR UPPER(rtp.table_name) LIKE UPPER('%&3%'))
AND ('&4' IS NULL OR UPPER(rtp.owner) LIKE UPPER('%&4%'))
ORDER BY 1
, 2
, 3
, 4
;
SQLPLUS> @all_roles '' '' '' '' '' ''
SQLPLUS> @all_roles 'somerol' '' '' '' '' ''
SQLPLUS> @all_roles 'roler' 'username' '' '' '' ''
SQLPLUS> @all_roles '' '' 'part-of-database-package-name' '' '' ''
etc.
You can alias the command to fix this problem in your .bash_profile
and run it every time you encounter it:
At the end of the file ~/.bash_profile
, add:
alias fix_brew='sudo chown -R $USER /usr/local/'
And now inside your terminal you can run:
$ fix_brew
I use this really simple small JavaScript library to validate a complete form in one single line of code:
jsFormValidator.App.create().Validator.applyRules('Login');
Check here: jsFormValidator
The benefit of this tool is that you just write a JSON object which describe your validation rules. There isn't any need to put in a line like:
<input type=text name="username" data-validate placeholder="Username">
data-validate
is injected in all the input fields of your form, but when using jsFormValidator, you don't require this heavy syntax and the validation will be applied to your form in one shot, without the need to touch your HTML code.
You need to be careful with m/d/Y and m-d-Y formats. PHP considers /
to mean m/d/Y and -
to mean d-m-Y. I would explicitly describe the input format in this case:
$ymd = DateTime::createFromFormat('m-d-Y', '10-16-2003')->format('Y-m-d');
That way you are not at the whims of a certain interpretation.
copied from: https://android.stackexchange.com/questions/12962/flush-clear-dns-cache
Addresses are cached for 600 seconds (10 minutes) by default. Failed lookups are cached for 10 seconds. From everything I've seen, there's nothing built in to flush the cache. This is apparently a reported bug http://code.google.com/p/android/issues/detail?id=7904 in Android because of the way it stores DNS cache. Clearing the browser cache doesn't touch the DNS, the "hard reset" clears it.
My specific case scenario was that the Azure app service had the minimum TLS version changed to 1.2
I don't know if that's the default from now on, but changing it back to 1.0 made it work.
You can access the setting inside "SSL Settings".
I create various return types using enum. It doesn't defined automatically. That implementation look like factory pattern.
public enum SmartReturn {
IntegerType, DoubleType;
@SuppressWarnings("unchecked")
public <T> T comeback(String value) {
switch (this) {
case IntegerType:
return (T) Integer.valueOf(value);
case DoubleType:
return (T) Double.valueOf(value);
default:
return null;
}
}
}
Unit Test:
public class MultipleReturnTypeTest {
@Test
public void returnIntegerOrString() {
Assert.assertTrue(SmartReturn.IntegerType.comeback("1") instanceof Integer);
Assert.assertTrue(SmartReturn.DoubleType.comeback("1") instanceof Double);
}
}
When you execute a program the child program inherits its environment variables from the parent. For instance if $HOME
is set to /root
in the parent then the child's $HOME
variable is also set to /root
.
This only applies to environment variable that are marked for export. If you set a variable at the command-line like
$ FOO="bar"
That variable will not be visible in child processes. Not unless you export it:
$ export FOO
You can combine these two statements into a single one in bash (but not in old-school sh):
$ export FOO="bar"
Here's a quick example showing the difference between exported and non-exported variables. To understand what's happening know that sh -c
creates a child shell process which inherits the parent shell's environment.
$ FOO=bar
$ sh -c 'echo $FOO'
$ export FOO
$ sh -c 'echo $FOO'
bar
Note: To get help on shell built-in commands use help export
. Shell built-ins are commands that are part of your shell rather than independent executables like /bin/ls
.
What about using git branch -m to rename the master branch to another one, then rename seotweaks branch to master? Something like this:
git branch -m master old-master
git branch -m seotweaks master
git push -f origin master
This might remove commits in origin master, please check your origin master before running git push -f origin master
.
DUMPBIN /EXPORTS Will get most of that information and hitting MSDN will get the rest.
Get one of the Visual Studio packages; C++
I think the extension is intended to allow a similar syntax for inserts and updates. In Oracle, a similar syntactical trick is:
UPDATE table SET (col1, col2) = (SELECT val1, val2 FROM dual)
Swift 3, Swift 4
if movetoroot {
navigationController?.popToRootViewController(animated: true)
} else {
navigationController?.popViewController(animated: true)
}
navigationController is optional because there might not be one.
An expression is a combination of values, variables, and operators. A value all by itself is considered an expression, and so is a variable, so the following are all legal expressions:
>>> 42
42
>>> n
17
>>> n + 25
42
When you type an expression at the prompt, the interpreter evaluates it, which means that it finds the value of the expression. In this example, n has the value 17 and n + 25 has the value 42.
A statement is a unit of code that has an effect, like creating a variable or displaying a value.
>>> n = 17
>>> print(n)
The first line is an assignment statement that gives a value to n. The second line is a print statement that displays the value of n. When you type a statement, the interpreter executes it, which means that it does whatever the statement says. In general, statements don’t have values.
router.navigate
is just a convenience method that wraps router.navigateByUrl
, it boils down to:
navigate(commands: any[], extras) {
return router.navigateByUrl(router.createUrlTree(commands, extras), extras);
}
As mentioned in other answers router.navigateByUrl
will only accept absolute URLs:
// This will work
router.navigateByUrl("http://localhost/team/33/user/11")
// This WON'T work even though relativeTo parameter is in the signature
router.navigateByUrl("../22", {relativeTo: route})
All the relative calculations are done by router.createUrlTree
and router.navigate
. Array syntax is used to treat every array element as a URL modifying "command". E.g. ".."
- go up, "path"
- go down, {expand: true}
- add query param, etc.. You can use it like this:
// create /team/33/user/11
router.navigate(['/team', 33, 'user', 11]);
// assuming the current url is `/team/33/user/11` and the route points to `user/11`
// navigate to /team/33/user/11/details
router.navigate(['details'], {relativeTo: route});
// navigate to /team/33/user/22
router.navigate(['../22'], {relativeTo: route});
// navigate to /team/44/user/22
router.navigate(['../../team/44/user/22'], {relativeTo: route});
That {relativeTo: route}
parameter is important as that's what router will use as the root for relative operations.
Get it through your component's constructor:
// In my-awesome.component.ts:
constructor(private route: ActivatedRoute, private router: Router) {}
// Example call
onNavigateClick() {
// Navigates to a parent component
this.router.navigate([..], { relativeTo: this.route })
}
Nicest thing about this directive is that it will retrieve the ActivatedRoute
for you. Under the hood it's using already familiar:
router.navigateByUrl(router.createUrlTree(commands, { relativeTo: route }), { relativeTo: route });
Following variants will produce identical result:
[routerLink]="['../..']"
// if the string parameter is passed it will be wrapped into an array
routerLink="../.."
This is how you can use the self inside the block:
//calling of the block
NSString *returnedText= checkIfOutsideMethodIsCalled(self);
NSString* (^checkIfOutsideMethodIsCalled)(*)=^NSString*(id obj)
{
[obj MethodNameYouWantToCall]; // this is how it will call the object
return @"Called";
};
You are not comparing dates. You are comparing strings. In the world of string comparisons, 09/17/2015
> 01/02/2016
because 09
> 01
. You need to either put your date in a comparable string format or compare DateTime
objects which are comparable.
<?php
$date_now = date("Y-m-d"); // this format is string comparable
if ($date_now > '2016-01-02') {
echo 'greater than';
}else{
echo 'Less than';
}
Or
<?php
$date_now = new DateTime();
$date2 = new DateTime("01/02/2016");
if ($date_now > $date2) {
echo 'greater than';
}else{
echo 'Less than';
}
abstract class Enumeration
{
public static function enum()
{
$reflect = new ReflectionClass( get_called_class() );
return $reflect->getConstants();
}
}
class Test extends Enumeration
{
const A = 'a';
const B = 'b';
}
foreach (Test::enum() as $key => $value) {
echo "$key -> $value<br>";
}
Hope this will help.
input[readonly="readonly"]
{
background-color:blue;
}
reference:
Here's proof that using std::numeric_limits::epsilon()
is not the answer — it fails for values greater than one:
Proof of my comment above:
#include <stdio.h>
#include <limits>
double ItoD (__int64 x) {
// Return double from 64-bit hexadecimal representation.
return *(reinterpret_cast<double*>(&x));
}
void test (__int64 ai, __int64 bi) {
double a = ItoD(ai), b = ItoD(bi);
bool close = std::fabs(a-b) < std::numeric_limits<double>::epsilon();
printf ("%.16f and %.16f %s close.\n", a, b, close ? "are " : "are not");
}
int main()
{
test (0x3fe0000000000000L,
0x3fe0000000000001L);
test (0x3ff0000000000000L,
0x3ff0000000000001L);
}
Running yields this output:
0.5000000000000000 and 0.5000000000000001 are close.
1.0000000000000000 and 1.0000000000000002 are not close.
Note that in the second case (one and just larger than one), the two input values are as close as they can possibly be, and still compare as not close. Thus, for values greater than 1.0, you might as well just use an equality test. Fixed epsilons will not save you when comparing floating-point values.