This is a mistake:
m.check(side);
That code has to go inside a function. Your class definition can only contain declarations and functions.
Classes don't "run", they provide a blueprint for how to make an object.
The line Message m;
means that an Orderbook
will contain Message
called m
, if you later create an Orderbook
.
#include <iomanip>
#include <iostream>
int main()
{
double num1 = 3.12345678;
std::cout << std::fixed << std::showpoint;
std::cout << std::setprecision(2);
std::cout << num1 << std::endl;
return 0;
}
Your variable size
is declared as: float size;
You can't use a floating point variable as the size of an array - it needs to be an integer value.
You could cast it to convert to an integer:
float *temp = new float[(int)size];
Your other problem is likely because you're writing outside of the bounds of the array:
float *temp = new float[size];
//Getting input from the user
for (int x = 1; x <= size; x++){
cout << "Enter temperature " << x << ": ";
// cin >> temp[x];
// This should be:
cin >> temp[x - 1];
}
Arrays are zero based in C++, so this is going to write beyond the end and never write the first element in your original code.
Cast the operands to floats:
float ans = (float)a / (float)b;
It's not because of a different code, but because of caching: RAM is slower than the CPU registers and a cache memory is inside the CPU to avoid to write the RAM every time a variable is changing. But the cache is not big as the RAM is, hence, it maps only a fraction of it.
The first code modifies distant memory addresses alternating them at each loop, thus requiring continuously to invalidate the cache.
The second code don't alternate: it just flow on adjacent addresses twice. This makes all the job to be completed in the cache, invalidating it only after the second loop starts.
This line is the problem:
int estimatedPopulation (int currentPopulation,
float growthRate (birthRate, deathRate))
Make it:
int estimatedPopulation (int currentPopulation, float birthRate, float deathRate)
instead and invoke the function with three arguments like
estimatePopulation( currentPopulation, birthRate, deathRate );
OR declare it with two arguments like:
int estimatedPopulation (int currentPopulation, float growthrt ) { ... }
and call it as
estimatedPopulation( currentPopulation, growthRate (birthRate, deathRate));
Probably more important here - C++ (and C) names have scope. You can have two things named the same but not at the same time. In your particular case your grouthRate
variable in the main()
hides the function with the same name. So within main()
you can only access grouthRate
as float
. On the other hand, outside of the main()
you can only access that name as a function, since that automatic variable is only visible within the scope of main()
.
Just hope I didn't confuse you further :)
# double background your script to have it detach from the tty
# cf. http://www.linux-mag.com/id/5981
(./program.sh &) &
I have made a small demo of NumberPicker. This may not be perfect but you can use and modify the same.
public class MainActivity extends Activity implements NumberPicker.OnValueChangeListener
{
private static TextView tv;
static Dialog d ;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView1);
Button b = (Button) findViewById(R.id.button11);
b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
show();
}
});
}
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
Log.i("value is",""+newVal);
}
public void show()
{
final Dialog d = new Dialog(MainActivity.this);
d.setTitle("NumberPicker");
d.setContentView(R.layout.dialog);
Button b1 = (Button) d.findViewById(R.id.button1);
Button b2 = (Button) d.findViewById(R.id.button2);
final NumberPicker np = (NumberPicker) d.findViewById(R.id.numberPicker1);
np.setMaxValue(100);
np.setMinValue(0);
np.setWrapSelectorWheel(false);
np.setOnValueChangedListener(this);
b1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
tv.setText(String.valueOf(np.getValue()));
d.dismiss();
}
});
b2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
d.dismiss();
}
});
d.show();
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/button11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Open" />
</RelativeLayout>
dialog.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<NumberPicker
android:id="@+id/numberPicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="64dp" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/numberPicker1"
android:layout_marginLeft="20dp"
android:layout_marginTop="98dp"
android:layout_toRightOf="@+id/numberPicker1"
android:text="Cancel" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button2"
android:layout_alignBottom="@+id/button2"
android:layout_marginRight="16dp"
android:layout_toLeftOf="@+id/numberPicker1"
android:text="Set" />
</RelativeLayout>
Edit:
under res/values/dimens.xml
<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>
Edit: Today I learned the better way of doing this. Please see ircmaxell's answer.
Parse the output of SHOW COLUMNS FROM table;
Here's more about it here: http://dev.mysql.com/doc/refman/5.0/en/show-columns.html
In my case, it was Subversion, TortoiseSVN clinging to those files, so I just clicked on SVN in the Eclipse menu and then disconnect. Worked for me.
I found a straight forward way of solving this, with the use of JSON.parse.
Let's assume the json below is inside the variable jsontext.
[
["Blankaholm", "Gamleby"],
["2012-10-23", "2012-10-22"],
["Blankaholm. Under natten har det varit inbrott", "E22 i med Gamleby. Singelolycka. En bilist har.],
["57.586174","16.521841"], ["57.893162","16.406090"]
]
The solution is this:
var parsedData = JSON.parse(jsontext);
Now I can access the elements the following way:
var cities = parsedData[0];
From SQL Server you can set a Unique key index on the table for (Columns that needs to be unique)
Swift 5.2, UIView+Extension
extension UIView {
public func addViewBorder(borderColor:CGColor,borderWith:CGFloat,borderCornerRadius:CGFloat){
self.layer.borderWidth = borderWith
self.layer.borderColor = borderColor
self.layer.cornerRadius = borderCornerRadius
}
}
You used this extension;
yourView.addViewBorder(borderColor: #colorLiteral(red: 0.6, green: 0.6, blue: 0.6, alpha: 1), borderWith: 1.0, borderCornerRadius: 20)
Note - if you want to pass a data attribute to a React Component, you need to handle them a little differently than other props.
2 options
Don't use camel case
<Option data-img-src='value' ... />
And then in the component, because of the dashes, you need to refer to the prop in quotes.
// @flow
class Option extends React.Component {
props: {
'data-img-src': string
}
And when you refer to it later, you don't use the dot syntax
render () {
return (
<option data-img-src={this.props['data-img-src']} >...</option>
)
}
}
Or use camel case
<Option dataImgSrc='value' ... />
And then in the component, you need to convert.
// @flow
class Option extends React.Component {
props: {
dataImgSrc: string
}
And when you refer to it later, you don't use the dot syntax
render () {
return (
<option data-img-src={this.props.dataImgSrc} >...</option>
)
}
}
Mainly just realize data-
attributes and aria-
attributes are treated specially. You are allowed to use hyphens in the attribute name in those two cases.
select to_char(to_date('1/21/2000','mm/dd/yyyy'),'dd-mm-yyyy') from dual
Or you can use this:
^(?:part[12]|(part)1,\12)$
$ irb --simple-prompt
class TestClass
def method1
end
def method2
end
def method3
end
end
tc_list = TestClass.instance_methods(false)
#[:method1, :method2, :method3]
puts tc_list
#method1
#method2
#method3
Floating point numbers are encoded using an exponential form, that is something like m * b ^ e
, i.e. not like integers at all. The question you ask would be meaningful in the context of fixed point numbers. There are numerous fixed point arithmetic libraries available.
Regarding floating point arithmetic: The number of decimal digits depends on the presentation and the number system. For example there are periodic numbers (0.33333
) which do not have a finite presentation in decimal but do have one in binary and vice versa.
Also it is worth mentioning that floating point numbers up to a certain point do have a difference larger than one, i.e. value + 1
yields value
, since value + 1
can not be encoded using m * b ^ e
, where m
, b
and e
are fixed in length. The same happens for values smaller than 1, i.e. all the possible code points do not have the same distance.
Because of this there is no precision of exactly n
digits like with fixed point numbers, since not every number with n
decimal digits does have a IEEE encoding.
There is a nearly obligatory document which you should read then which explains floating point numbers: What every computer scientist should know about floating point arithmetic.
This is very possible if you write your own helper. We are using a custom $
helper to accomplish this type of interaction (and more):
/*///////////////////////
Adds support for passing arguments to partials. Arguments are merged with
the context for rendering only (non destructive). Use `:token` syntax to
replace parts of the template path. Tokens are replace in order.
USAGE: {{$ 'path.to.partial' context=newContext foo='bar' }}
USAGE: {{$ 'path.:1.:2' replaceOne replaceTwo foo='bar' }}
///////////////////////////////*/
Handlebars.registerHelper('$', function(partial) {
var values, opts, done, value, context;
if (!partial) {
console.error('No partial name given.');
}
values = Array.prototype.slice.call(arguments, 1);
opts = values.pop();
while (!done) {
value = values.pop();
if (value) {
partial = partial.replace(/:[^\.]+/, value);
}
else {
done = true;
}
}
partial = Handlebars.partials[partial];
if (!partial) {
return '';
}
context = _.extend({}, opts.context||this, _.omit(opts, 'context', 'fn', 'inverse'));
return new Handlebars.SafeString( partial(context) );
});
SQL Server Express editions are limited in some ways - one way is that they don't have the SQL Agent that allows you to schedule jobs.
There are a few third-party extensions that provide that capability - check out e.g.:
If you don't have to support IE, you can use selectionStart
and selectionEnd
attributes of textarea
.
To get caret position just use selectionStart
:
function getCaretPosition(textarea) {
return textarea.selectionStart
}
To get the strings surrounding the selection, use following code:
function getSurroundingSelection(textarea) {
return [textarea.value.substring(0, textarea.selectionStart)
,textarea.value.substring(textarea.selectionStart, textarea.selectionEnd)
,textarea.value.substring(textarea.selectionEnd, textarea.value.length)]
}
See also HTMLTextAreaElement docs.
I was able to get a great solution to this problem with iScroll, with the feel of momentum scrolling and everything https://github.com/cubiq/iscroll The github doc is great, and I mostly followed it. Here's the details of my implementation.
HTML: I wrapped the scrollable area of my content in some divs that iScroll can use:
<div id="wrapper">
<div id="scroller">
... my scrollable content
</div>
</div>
CSS: I used the Modernizr class for "touch" to target my style changes only to touch devices (because I only instantiated iScroll on touch).
.touch #wrapper {
position: absolute;
z-index: 1;
top: 0;
bottom: 0;
left: 0;
right: 0;
overflow: hidden;
}
.touch #scroller {
position: absolute;
z-index: 1;
width: 100%;
}
JS: I included iscroll-probe.js from the iScroll download, and then initialized the scroller as below, where updatePosition is my function that reacts to the new scroll position.
# coffeescript
if Modernizr.touch
myScroller = new IScroll('#wrapper', probeType: 3)
myScroller.on 'scroll', updatePosition
myScroller.on 'scrollEnd', updatePosition
You have to use myScroller to get the current position now, instead of looking at the scroll offset. Here is a function taken from http://markdalgleish.com/presentations/embracingtouch/ (a super helpful article, but a little out of date now)
function getScroll(elem, iscroll) {
var x, y;
if (Modernizr.touch && iscroll) {
x = iscroll.x * -1;
y = iscroll.y * -1;
} else {
x = elem.scrollTop;
y = elem.scrollLeft;
}
return {x: x, y: y};
}
The only other gotcha was occasionally I would lose part of my page that I was trying to scroll to, and it would refuse to scroll. I had to add in some calls to myScroller.refresh() whenever I changed the contents of the #wrapper, and that solved the problem.
EDIT: Another gotcha was that iScroll eats all the "click" events. I turned on the option to have iScroll emit a "tap" event and handled those instead of "click" events. Thankfully I didn't need much clicking in the scroll area, so this wasn't a big deal.
For what it's worth, if you needed to pass the function (or class) name and app name as a string, then you could do this:
myFnName = "MyFn"
myAppName = "MyApp"
app = sys.modules[myAppName]
fn = getattr(app,myFnName)
You can apply the list as separate arguments:
print(*L)
and let print()
take care of converting each element to a string. You can, as always, control the separator by setting the sep
keyword argument:
>>> L = [1, 2, 3, 4, 5]
>>> print(*L)
1 2 3 4 5
>>> print(*L, sep=', ')
1, 2, 3, 4, 5
>>> print(*L, sep=' -> ')
1 -> 2 -> 3 -> 4 -> 5
Unless you need the joined string for something else, this is the easiest method. Otherwise, use str.join()
:
joined_string = ' '.join([str(v) for v in L])
print(joined_string)
# do other things with joined_string
Note that this requires manual conversion to strings for any non-string values in L
!
All of
std::string s(1, c); std::cout << s << std::endl;
and
std::cout << std::string(1, c) << std::endl;
and
std::string s; s.push_back(c); std::cout << s << std::endl;
worked for me.
If you need native data types for some reason (e.g. JSON serialization) this is my quick 'n' dirty way to do it:
data = [{'id': blog.pk, 'name': blog.name} for blog in blogs]
As you can see building the dict inside the list is not really DRY so if somebody knows a better way ...
After mid-2018:
1:) Invite @getidsbot or @RawDataBot
to your group and get your group id from the chat id field.
Message
+ message_id: 338
+ from
? + id: *****
? + is_bot: false
? + first_name: ???
? + username: ******
? + language_code: en
+ chat
? + id: -1001118554477 // This is Your Group id
? + title: Test Group
? + type: supergroup
+ date: 1544948900
+ text: A
2:) use an unofficial Messenger like Plus Messenger and see your group id in group/channel info.
Before mid-2018: (don't Use)
1: Goto (https://web.telegram.org)
2: Goto your Gorup and Find your link of Gorup(https://web.telegram.org/#/im?p=g154513121)
3: Copy That number after g and put a (-) Before That -154513121
4: Send Your Message to Gorup
bot.sendMessage(-154513121, "Hi")
I Tested Now and Work like a Charm
In Notepad++, you can use the Mark tab in the Find dialogue to Bookmark all lines matching your query which can be regex or normal (wildcard).
Then use Search > Bookmark > Remove Bookmarked Lines.
Even when the question is regarding Java 7, I think it adds value to know that from Java 11 onward, there is a static method in Path
class that allows to do this straight away:
With all the path in one String:
Path.of("/tmp/foo");
With the path broken down in several Strings:
Path.of("/tmp","foo");
Changing the port in Device Manager works for me. I was also able to fix it by finding the port that Arduino was using and then select it from the Adruion IDE from tools menu Tools>Port>Com Port
For INNER
joins, no, the order doesn't matter. The queries will return same results, as long as you change your selects from SELECT *
to SELECT a.*, b.*, c.*
.
For (LEFT
, RIGHT
or FULL
) OUTER
joins, yes, the order matters - and (updated) things are much more complicated.
First, outer joins are not commutative, so a LEFT JOIN b
is not the same as b LEFT JOIN a
Outer joins are not associative either, so in your examples which involve both (commutativity and associativity) properties:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c.ac_id = a.ac_id
is equivalent to:
a LEFT JOIN c
ON c.ac_id = a.ac_id
LEFT JOIN b
ON b.ab_id = a.ab_id
but:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c.ac_id = a.ac_id
AND c.bc_id = b.bc_id
is not equivalent to:
a LEFT JOIN c
ON c.ac_id = a.ac_id
LEFT JOIN b
ON b.ab_id = a.ab_id
AND b.bc_id = c.bc_id
Another (hopefully simpler) associativity example. Think of this as (a LEFT JOIN b) LEFT JOIN c
:
a LEFT JOIN b
ON b.ab_id = a.ab_id -- AB condition
LEFT JOIN c
ON c.bc_id = b.bc_id -- BC condition
This is equivalent to a LEFT JOIN (b LEFT JOIN c)
:
a LEFT JOIN
b LEFT JOIN c
ON c.bc_id = b.bc_id -- BC condition
ON b.ab_id = a.ab_id -- AB condition
only because we have "nice" ON
conditions. Both ON b.ab_id = a.ab_id
and c.bc_id = b.bc_id
are equality checks and do not involve NULL
comparisons.
You can even have conditions with other operators or more complex ones like: ON a.x <= b.x
or ON a.x = 7
or ON a.x LIKE b.x
or ON (a.x, a.y) = (b.x, b.y)
and the two queries would still be equivalent.
If however, any of these involved IS NULL
or a function that is related to nulls like COALESCE()
, for example if the condition was b.ab_id IS NULL
, then the two queries would not be equivalent.
I'm using this on my site (for example here), but I'm using some extra stuff to do lazy loading, meaning extracting the code isn't as straightforward as I would like it to be for putting it in a fiddle.
Also, my templating engine is smarty, but I'm sure you get the idea.
The meat...
Updating the indicators:
<ol class="carousel-indicators">
{assign var='walker' value=0}
{foreach from=$item["imagearray"] key="key" item="value"}
<li data-target="#myCarousel" data-slide-to="{$walker}"{if $walker == 0} class="active"{/if}>
<img src='http://farm{$value["farm"]}.static.flickr.com/{$value["server"]}/{$value["id"]}_{$value["secret"]}_s.jpg'>
</li>
{assign var='walker' value=1 + $walker}
{/foreach}
</ol>
Changing the CSS related to the indicators:
.carousel-indicators {
bottom:-50px;
height: 36px;
overflow-x: hidden;
white-space: nowrap;
}
.carousel-indicators li {
text-indent: 0;
width: 34px !important;
height: 34px !important;
border-radius: 0;
}
.carousel-indicators li img {
width: 32px;
height: 32px;
opacity: 0.5;
}
.carousel-indicators li:hover img, .carousel-indicators li.active img {
opacity: 1;
}
.carousel-indicators .active {
border-color: #337ab7;
}
When the carousel has slid, update the list of thumbnails:
$('#myCarousel').on('slid.bs.carousel', function() {
var widthEstimate = -1 * $(".carousel-indicators li:first").position().left + $(".carousel-indicators li:last").position().left + $(".carousel-indicators li:last").width();
var newIndicatorPosition = $(".carousel-indicators li.active").position().left + $(".carousel-indicators li.active").width() / 2;
var toScroll = newIndicatorPosition + indicatorPosition;
var adjustedScroll = toScroll - ($(".carousel-indicators").width() / 2);
if (adjustedScroll < 0)
adjustedScroll = 0;
if (adjustedScroll > widthEstimate - $(".carousel-indicators").width())
adjustedScroll = widthEstimate - $(".carousel-indicators").width();
$('.carousel-indicators').animate({ scrollLeft: adjustedScroll }, 800);
indicatorPosition = adjustedScroll;
});
And, when your page loads, set the initial scroll position of the thumbnails:
var indicatorPosition = 0;
It's pretty useful not to let the closing ?>
in.
The file stays valid to PHP (not a syntax error) and as @David Dorward said it allows to avoid having white space / break-line (anything that can send a header to the browser) after the ?>
.
For example,
<?
header("Content-type: image/png");
$img = imagecreatetruecolor ( 10, 10);
imagepng ( $img);
?>
[space here]
[break line here]
won't be valid.
But
<?
header("Content-type: image/png");
$img = imagecreatetruecolor ( 10, 10 );
imagepng ( $img );
will.
For once, you must be lazy to be secure.
source <(curl -s http://mywebsite.com/myscript.txt)
ought to do it. Alternately, leave off the initial redirection on yours, which is redirecting standard input; bash
takes a filename to execute just fine without redirection, and <(command)
syntax provides a path.
bash <(curl -s http://mywebsite.com/myscript.txt)
It may be clearer if you look at the output of echo <(cat /dev/null)
There are 2 ways for using Gradle behind a proxy :
(From Guillaume Berche's post)
Add these arguments in your gradle command :
-Dhttp.proxyHost=your_proxy_http_host -Dhttp.proxyPort=your_proxy_http_port
or these arguments if you are using https :
-Dhttps.proxyHost=your_proxy_https_host -Dhttps.proxyPort=your_proxy_https_port
in gradle.properties
add the following lines :
systemProp.http.proxyHost=your_proxy_http_host
systemProp.http.proxyPort=your_proxy_http_port
systemProp.https.proxyHost=your_proxy_https_host
systemProp.https.proxyPort=your_proxy_https_port
(for gradle.properties
file location, please refer to official documentation https://docs.gradle.org/current/userguide/build_environment.html
EDIT : as said by @Joost :
A small but important detail that I initially overlooked: notice that the actual host name does NOT contain http://
protocol part of the URL...
I had a similar issue trying to split a file path and struggled to find a simple answer. This worked for me and didn't involve having to substitute delimiters back into the split text:
my_path = 'folder1/folder2/folder3/file1'
import re
re.findall('[^/]+/|[^/]+', my_path)
returns:
['folder1/', 'folder2/', 'folder3/', 'file1']
I have edited the given above example...
public class YourActivity extends implements OnMarkerClickListener
{
......
private void setMarker()
{
.......
googleMap.setOnMarkerClickListener(this);
myMarker = googleMap.addMarker(new MarkerOptions()
.position(latLng)
.title("My Spot")
.snippet("This is my spot!")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
......
}
@Override
public boolean onMarkerClick(Marker marker) {
Toast.makeText(this,marker.getTitle(),Toast.LENGTH_LONG).show();
}
}
Why?: When Wordpress editing your re-write rules, so make sure your HTTPS rule should not be removed! so this is no conflict with native Wordpress rules.
<IfModule mod_rewrite.c>
RewriteCond %{HTTPS} !=on
RewriteRule ^(.*) https://%{SERVER_NAME}/$1 [R,L]
</IfModule>
# BEGIN WordPress
<IfModule mod_rewrite.c>
#Your our Wordpress rewrite rules...
</IfModule>
# END WordPress
Note: You have to change WordPress Address & Site Address urls to https://
in General Settings also (wp-admin/options-general.php
)
If the data is on multiple lines then you may have to use the following,
/My cow ([\s\S]*)milk/gm
My cow always gives
milk
You need to start the zookeeper server first. So first go to kafka/bin/windows and run
zookeeper-server-start.bat ../../config/zookeeper.properties
then in the same folder with a new cmd windows start the kafka servers by running
kafka-server-start.bat ../../config/server.properties
Note: if you starting it for the first time then there are certain changes to be made in these files
then inside kafka/bin/windows run
kafka-topics.bat --zookeeper localhost:2181 --list
to list down all the topics existing.
This should work:
string s = "9quali52ty3";
byte[] ASCIIValues = Encoding.ASCII.GetBytes(s);
foreach(byte b in ASCIIValues) {
Console.WriteLine(b);
}
Use ClassLoader#getResource()
instead if its URI represents a valid local disk file system path.
URL resource = classLoader.getResource("resource.ext");
File file = new File(resource.toURI());
FileInputStream input = new FileInputStream(file);
// ...
If it doesn't (e.g. JAR), then your best bet is to copy it into a temporary file.
Path temp = Files.createTempFile("resource-", ".ext");
Files.copy(classLoader.getResourceAsStream("resource.ext"), temp, StandardCopyOption.REPLACE_EXISTING);
FileInputStream input = new FileInputStream(temp.toFile());
// ...
That said, I really don't see any benefit of doing so, or it must be required by a poor helper class/method which requires FileInputStream
instead of InputStream
. If you can, just fix the API to ask for an InputStream
instead. If it's a 3rd party one, by all means report it as a bug. I'd in this specific case also put question marks around the remainder of that API.
You can also use Dir::exist?
like so:
Dir.exist?('Directory Name')
Returns
true
if the 'Directory Name' is a directory,false
otherwise.1
Google services have a polyglot persistence architecture. BigTable is leveraged by most of its services like YouTube, Google Search, Google Analytics etc. The search service initially used MapReduce for its indexing infrastructure but later transitioned to BigTable during the Caffeine release.
Google Cloud datastore has over 100 applications in production at Google both facing internal and external users. Applications like Gmail, Picasa, Google Calendar, Android Market & AppEngine use Cloud Datastore & Megastore.
Google Trends use MillWheel for stream processing. Google Ads initially used MySQL later migrated to F1 DB - a custom written distributed relational database. Youtube uses MySQL with Vitess. Google stores exabytes of data across the commodity servers with the help of the Google File System.
Source: Google Databases: How Do Google Services Store Petabyte-Exabyte Scale Data?
YouTube Database – How Does It Store So Many Videos Without Running Out Of Storage Space?
Try this:
#include <stdio.h>
#include <unistd.h>
#include <string.h> /* for strncpy */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <net/if.h>
#include <arpa/inet.h>
int
main()
{
int fd;
struct ifreq ifr;
fd = socket(AF_INET, SOCK_DGRAM, 0);
/* I want to get an IPv4 IP address */
ifr.ifr_addr.sa_family = AF_INET;
/* I want IP address attached to "eth0" */
strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);
ioctl(fd, SIOCGIFADDR, &ifr);
close(fd);
/* display result */
printf("%s\n", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
return 0;
}
The code sample is taken from here.
Try LIKE
construction, e.g. (assuming StudentId
is of type Char
, VarChar
etc.)
select *
from Students
where StudentId like '%' || TEXT || '%' -- <- TEXT - text to contain
This allows for a centered content body with min-width for my forms to not collapse funny:
html {
overflow-y: scroll;
height: 100%;
margin: 0px auto;
padding: 0;
}
body {
height: 100%;
margin: 0px auto;
max-width: 960px;
min-width: 750px;
padding: 0;
}
div#footer {
width: 100%;
position: absolute;
bottom: 0;
left: 0;
height: 60px;
}
div#wrapper {
height: auto !important;
min-height: 100%;
height: 100%;
position: relative;
overflow: hidden;
}
div#pageContent {
padding-bottom: 60px;
}
div#header {
width: 100%;
}
And my layout page looks like:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title></title>
</head>
<body>
<div id="wrapper">
<div id="header"></div>
<div id="pageContent"></div>
<div id="footer"></div>
</div>
</body>
</html>
Example here: http://data.nwtresearch.com/
One more note, if you want the full page background like the code you added looks like, remove the height: auto !important;
from the wrapper div: http://jsfiddle.net/mdares/a8VVw/
Make sure you’re pushing the right branch. I wasn’t on master
and kept wondering why it was complaining :P
For ASP.NET pages I am using the following
BEFORE
<script src="/Scripts/pages/common.js" type="text/javascript"></script>
AFTER (force reload)
<script src="/Scripts/pages/common.js?ver<%=DateTime.Now.Ticks.ToString()%>" type="text/javascript"></script>
Adding the DateTime.Now.Ticks works very well.
The where
statement gets executed before the order by
. So, your desired query is saying "take the first row and then order it by t_stamp
desc". And that is not what you intend.
The subquery method is the proper method for doing this in Oracle.
If you want a version that works in both servers, you can use:
select ril.*
from (select ril.*, row_number() over (order by t_stamp desc) as seqnum
from raceway_input_labo ril
) ril
where seqnum = 1
The outer *
will return "1" in the last column. You would need to list the columns individually to avoid this.
After the docker installation you have 3 networks by default:
docker network ls
NETWORK ID NAME DRIVER SCOPE
f3be8b1ef7ce bridge bridge local
fbff927877c1 host host local
023bb5940080 none null local
I'm trying to keep this simple. So if you start a container by default it will be created inside the bridge (docker0) network.
$ docker run -d jenkins
1498e581cdba jenkins "/bin/tini -- /usr..." 3 minutes ago Up 3 minutes 8080/tcp, 50000/tcp friendly_bell
In the dockerfile of jenkins the ports 8080
and 50000
are exposed. Those ports are opened for the container on its bridge network. So everything inside that bridge network can access the container on port 8080
and 50000
. Everything in the bridge network is in the private range of "Subnet": "172.17.0.0/16",
If you want to access them from the outside you have to map the ports with -p 8080:8080
. This will map the port of your container to the port of your real server (the host network). So accessing your server on 8080
will route to your bridgenetwork on port 8080
.
Now you also have your host network. Which does not containerize the containers networking. So if you start a container in the host network it will look like this (it's the first one):
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1efd834949b2 jenkins "/bin/tini -- /usr..." 6 minutes ago Up 6 minutes eloquent_panini
1498e581cdba jenkins "/bin/tini -- /usr..." 10 minutes ago Up 10 minutes 8080/tcp, 50000/tcp friendly_bell
The difference is with the ports. Your container is now inside your host network. So if you open port 8080
on your host you will acces the container immediately.
$ sudo iptables -I INPUT 5 -p tcp -m tcp --dport 8080 -j ACCEPT
I've opened port 8080
in my firewall and when I'm now accesing my server on port 8080
I'm accessing my jenkins. I think this blog is also useful to understand it better.
JMeter's built-in proxy may be used to record all HTTP request/response information.
Firefox "Live HTTP headers" plugin may be used to see what is happening on the browser side when sending/receiving request.
Firefox "Tamper data" plugin may be useful when you need to intercept and modify request.
I usually use the following method:
#include <sstream>
template <typename T>
std::string NumberToString ( T Number )
{
std::ostringstream ss;
ss << Number;
return ss.str();
}
It is described in details here.
the rdl file content:
<Visibility><Hidden>=Parameters!casetype.Value=300</Hidden></Visibility>
so the text box will hidden, if your expression is true.
I found that by creating the chart in a separate worksheet any updates will apply. HTH
I had an issue with the parseActivityForResult arguments. I got this to work:
package JMA.BarCodeScanner;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class JMABarcodeScannerActivity extends Activity {
Button captureButton;
TextView tvContents;
TextView tvFormat;
Activity activity;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
activity = this;
captureButton = (Button)findViewById(R.id.capture);
captureButton.setOnClickListener(listener);
tvContents = (TextView)findViewById(R.id.tvContents);
tvFormat = (TextView)findViewById(R.id.tvFormat);
}
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
switch (requestCode)
{
case IntentIntegrator.REQUEST_CODE:
if (resultCode == Activity.RESULT_OK)
{
IntentResult intentResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
if (intentResult != null)
{
String contents = intentResult.getContents();
String format = intentResult.getFormatName();
tvContents.setText(contents.toString());
tvFormat.setText(format.toString());
//this.elemQuery.setText(contents);
//this.resume = false;
Log.d("SEARCH_EAN", "OK, EAN: " + contents + ", FORMAT: " + format);
} else {
Log.e("SEARCH_EAN", "IntentResult je NULL!");
}
}
else if (resultCode == Activity.RESULT_CANCELED) {
Log.e("SEARCH_EAN", "CANCEL");
}
}
}
private View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
IntentIntegrator integrator = new IntentIntegrator(activity);
integrator.initiateScan();
}
};
}
Latyout for Activity:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="@+id/capture"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Take a Picture"/>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tvContents"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tvFormat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
fline=open("myfile").readline().rstrip()
As your question confirms, they are different: &
is ONLY string concatenation, +
is overloaded with both normal addition and concatenation.
In your example:
because one of the operands to +
is an integer VB attempts to convert the string to a integer, and as your string is not numeric it throws; and
&
only works with strings so the integer is converted to a string.
how random count in :
count, one := big.NewInt(0), big.NewInt(1)
count.SetString("100000000000000000000000", 10)
You need to set up SSH keys.
This GitHub page explains how to generate keys.
If you have an existing key, you copy $HOME/.ssh/id_rsa.pub
and paste it into the GitHub SSH settings page.
Edit: See Sebastien Lorber's answer which fixes a bug in my implementation.
Use the onInput event, and optionally onBlur as a fallback. You might want to save the previous contents to prevent sending extra events.
I'd personally have this as my render function.
var handleChange = function(event){
this.setState({html: event.target.value});
}.bind(this);
return (<ContentEditable html={this.state.html} onChange={handleChange} />);
Which uses this simple wrapper around contentEditable.
var ContentEditable = React.createClass({
render: function(){
return <div
onInput={this.emitChange}
onBlur={this.emitChange}
contentEditable
dangerouslySetInnerHTML={{__html: this.props.html}}></div>;
},
shouldComponentUpdate: function(nextProps){
return nextProps.html !== this.getDOMNode().innerHTML;
},
emitChange: function(){
var html = this.getDOMNode().innerHTML;
if (this.props.onChange && html !== this.lastHtml) {
this.props.onChange({
target: {
value: html
}
});
}
this.lastHtml = html;
}
});
Remember that by default the return value from the input will be a string and not an integer. You cannot compare strings with booleans like <, >, =>, <= (unless you are comparing the length). Therefore your code should look like this:
number = 23
guess = int(input('Enter a number: ')) # The var guess will be an integer
if guess == number:
print('Congratulations! You guessed it.')
elif guess != number:
print('Wrong Number')
Add following at start of cell and run it:
from IPython.display import clear_output
clear_output(wait=True)
Here is a method you can use:
public static void RemoveAllByValue<K, V>(this Dictionary<K, V> dictionary, V value)
{
foreach (var key in dictionary.Where(
kvp => EqualityComparer<V>.Default.Equals(kvp.Value, value)).
Select(x => x.Key).ToArray())
dictionary.Remove(key);
}
Use numeric(n,n) where n has enough resolution to round to 1.00. For instance:
declare @discount numeric(9,9)
, @quantity int
select @discount = 0.999999999
, @quantity = 10000
select convert(money, @discount * @quantity)
tuple = 1 record; n-tuple = ordered list of 'n' records; Elmasri Navathe book (page 198 3rd edition).
record = either ordered or unordered.
You may simply use both as per the specification kindly provided by Oli.
I always use border:0 none;
.
Though there is no harm in specifying them seperately and some browsers will parse the CSS faster if you do use the legacy CSS1 property calls.
Though border:0;
will normally default the border style to none
, I have however noticed some browsers enforcing their default border style which can strangely overwrite border:0;
.
Ok, solved my problem, if anyone is passing by here is the answer:
Just had to add left: 0,
and top: 0,
to the styles, and yes, I'm tired.
position: 'absolute',
left: 0,
top: 0,
I wouldn't have thought so.
If you have Visual Studio you could edit them through that. Some versions of Visual Studio has Crystal Reports shipped with them.
If not, you will have to find someone who has Crystal Reports and ask then nicely to amend them for you. Or buy Crystal Reports!
In my case the width of the contentView was greater than the width of UIScrollView and that was the reason for unwanted horizontal scrolling. I solved it by setting the width of contentView equal to width of UIScrollView.
Hope it helps someone
As this question comes up first on Google I thought I'd share a solution using TigerVNC which is the default these days.
xrandr
allows selecting the display modes (a.k.a resolutions) however
due to modelines being hard
coded
any additional modeline such as "2560x1600" or "1600x900" would need to
be added into the
code. I
think the developers who wrote the code are much smarter and the hard
coded list is just a sample of values. It leads to the conclusion that
there must be a way to add custom modelines and man xrandr
confirms
it.
With that background if the goal is to share a VNC session between two computers with the above resolutions and assuming that the VNC server is the computer with the resolution of "1600x900":
Start a VNC session with a geometry matching the physical display:
$ vncserver -geometry 1600x900 :1
On the "2560x1600" computer start the VNC viewer (I prefer Remmina) and connect to the remote VNC session:
host:5901
Once inside the VNC session start up a terminal window.
Confirm that the new geometry is available in the VNC session:
$ xrandr
Screen 0: minimum 32 x 32, current 1600 x 900, maximum 32768 x 32768
VNC-0 connected 1600x900+0+0 0mm x 0mm
1600x900 60.00 +
1920x1200 60.00
1920x1080 60.00
1600x1200 60.00
1680x1050 60.00
1400x1050 60.00
1360x768 60.00
1280x1024 60.00
1280x960 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
800x600 60.00
640x480 60.00
and you'll notice the screen being quite small.
List the modeline (see xrandr article in ArchLinux wiki) for the "2560x1600" resolution:
$ cvt 2560 1600
# 2560x1600 59.99 Hz (CVT 4.10MA) hsync: 99.46 kHz; pclk: 348.50 MHz
Modeline "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600 1603 1609 1658 -hsync +vsync
or if the monitor is old get the GTF timings:
$ gtf 2560 1600 60
# 2560x1600 @ 60.00 Hz (GTF) hsync: 99.36 kHz; pclk: 348.16 MHz
Modeline "2560x1600_60.00" 348.16 2560 2752 3032 3504 1600 1601 1604 1656 -HSync +Vsync
Add the new modeline to the current VNC session:
$ xrandr --newmode "2560x1600_60.00" 348.16 2560 2752 3032 3504 1600 1601 1604 1656 -HSync +Vsync
In the above xrandr
output look for the display name on the second
line:
VNC-0 connected 1600x900+0+0 0mm x 0mm
Bind the new modeline to the current VNC virtual monitor:
$ xrandr --addmode VNC-0 "2560x1600_60.00"
Use it:
$ xrandr -s "2560x1600_60.00"
Use SpecialCells to delete only the rows that are visible after autofiltering:
ActiveSheet.Range("$A$1:$I$" & lines).SpecialCells _
(xlCellTypeVisible).EntireRow.Delete
If you have a header row in your range that you don't want to delete, add an offset to the range to exclude it:
ActiveSheet.Range("$A$1:$I$" & lines).Offset(1, 0).SpecialCells _
(xlCellTypeVisible).EntireRow.Delete
The coalesce operator (??) is what you want, I believe.
For future Googlers, If you get an error similar below after you trigger click for a polygon
"Uncaught TypeError: Cannot read property 'vertex' of undefined"
then try the code below
google.maps.event.trigger(polygon, "click", {});
In Excel 2016 at least, you can use INDIRECT with a full path reference; the entire reference (including sheet name) needs to be enclosed by '
characters.
So this should work for you:
= INDIRECT("'C:\data\[myExcelFile.xlsm]" & C13 & "'!$A$1")
Note the closing '
in the last string (ie '!$A$1
surrounded by ""
)
Have a go with these code:
>>> import pyexcel as pe
>>> sheet = pe.Sheet(data)
>>> data=[[1, 2], [2, 3], [4, 5]]
>>> sheet
Sheet Name: pyexcel
+---+---+
| 1 | 2 |
+---+---+
| 2 | 3 |
+---+---+
| 4 | 5 |
+---+---+
>>> sheet.save_as("one.csv")
>>> b = [[126, 125, 123, 122, 123, 125, 128, 127, 128, 129, 130, 130, 128, 126, 124, 126, 126, 128, 129, 130, 130, 130, 130, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 134, 134, 134, 134, 134, 134, 134, 134, 133, 134, 135, 134, 133, 133, 134, 135, 136], [135, 135, 136, 137, 137, 136, 134, 135, 135, 135, 134, 134, 133, 133, 133, 134, 134, 134, 133, 133, 132, 132, 132, 135, 135, 133, 133, 133, 133, 135, 135, 131, 135, 136, 134, 133, 136, 137, 136, 133, 134, 135, 136, 136, 135, 134, 133, 133, 134, 135, 136, 136, 136, 135, 134, 135, 138, 138, 135, 135, 138, 138, 135, 139], [137, 135, 136, 138, 139, 137, 135, 142, 139, 137, 139, 138, 136, 137, 141, 138, 138, 139, 139, 139, 139, 138, 138, 138, 138, 137, 137, 137, 137, 138, 138, 136, 137, 137, 137, 137, 137, 137, 138, 148, 144, 140, 138, 137, 138, 138, 138, 137, 137, 137, 137, 137, 138, 139, 140, 141, 141, 141, 141, 141, 141, 141, 141, 141], [141, 141, 141, 141, 141, 141, 141, 139, 139, 139, 140, 140, 141, 141, 141, 140, 140, 140, 140, 140, 141, 142, 143, 138, 138, 138, 139, 139, 140, 140, 140, 141, 140, 139, 139, 141, 141, 140, 139, 145, 137, 137, 145, 145, 137, 137, 144, 141, 139, 146, 134, 145, 140, 149, 144, 145, 142, 140, 141, 144, 145, 142, 139, 140]]
>>> s2 = pe.Sheet(b)
>>> s2
Sheet Name: pyexcel
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
| 126 | 125 | 123 | 122 | 123 | 125 | 128 | 127 | 128 | 129 | 130 | 130 | 128 | 126 | 124 | 126 | 126 | 128 | 129 | 130 | 130 | 130 | 130 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 132 | 134 | 134 | 134 | 134 | 134 | 134 | 134 | 134 | 133 | 134 | 135 | 134 | 133 | 133 | 134 | 135 | 136 |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
| 135 | 135 | 136 | 137 | 137 | 136 | 134 | 135 | 135 | 135 | 134 | 134 | 133 | 133 | 133 | 134 | 134 | 134 | 133 | 133 | 132 | 132 | 132 | 135 | 135 | 133 | 133 | 133 | 133 | 135 | 135 | 131 | 135 | 136 | 134 | 133 | 136 | 137 | 136 | 133 | 134 | 135 | 136 | 136 | 135 | 134 | 133 | 133 | 134 | 135 | 136 | 136 | 136 | 135 | 134 | 135 | 138 | 138 | 135 | 135 | 138 | 138 | 135 | 139 |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
| 137 | 135 | 136 | 138 | 139 | 137 | 135 | 142 | 139 | 137 | 139 | 138 | 136 | 137 | 141 | 138 | 138 | 139 | 139 | 139 | 139 | 138 | 138 | 138 | 138 | 137 | 137 | 137 | 137 | 138 | 138 | 136 | 137 | 137 | 137 | 137 | 137 | 137 | 138 | 148 | 144 | 140 | 138 | 137 | 138 | 138 | 138 | 137 | 137 | 137 | 137 | 137 | 138 | 139 | 140 | 141 | 141 | 141 | 141 | 141 | 141 | 141 | 141 | 141 |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
| 141 | 141 | 141 | 141 | 141 | 141 | 141 | 139 | 139 | 139 | 140 | 140 | 141 | 141 | 141 | 140 | 140 | 140 | 140 | 140 | 141 | 142 | 143 | 138 | 138 | 138 | 139 | 139 | 140 | 140 | 140 | 141 | 140 | 139 | 139 | 141 | 141 | 140 | 139 | 145 | 137 | 137 | 145 | 145 | 137 | 137 | 144 | 141 | 139 | 146 | 134 | 145 | 140 | 149 | 144 | 145 | 142 | 140 | 141 | 144 | 145 | 142 | 139 | 140 |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
>>> s2[0,0]
126
>>> s2.save_as("two.csv")
HttpURLConnection
has a setConnectTimeout method.
Just set the timeout to 5000 milliseconds, and then catch java.net.SocketTimeoutException
Your code should look something like this:
try {
HttpURLConnection.setFollowRedirects(false);
HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
con.setRequestMethod("HEAD");
con.setConnectTimeout(5000); //set timeout to 5 seconds
return (con.getResponseCode() == HttpURLConnection.HTTP_OK);
} catch (java.net.SocketTimeoutException e) {
return false;
} catch (java.io.IOException e) {
return false;
}
from django.db import models
class Foo(models.Model):
any_field = models.BooleanField(default=True)
I use blueimp-md5 which is "Compatible with server-side environments like Node.js, module loaders like RequireJS, Browserify or webpack and all web browsers."
Use it like this:
var md5 = require("blueimp-md5");
var myHashedString = createHash('GreensterRox');
createHash(myString){
return md5(myString);
}
If passing hashed values around in the open it's always a good idea to salt them so that it is harder for people to recreate them:
createHash(myString){
var salt = 'HnasBzbxH9';
return md5(myString+salt);
}
Committing .gitignore can be very useful but you want to make sure you don't modify it too much thereafter especially if you regularly switch between branches. If you do you might get cases where files are ignored in a branch and not in the other, forcing you to go manually delete or rename files in your work directory because a checkout failed as it would overwrite a non-tracked file.
Therefore yes, do commit your .gitignore, but not before you are reasonably sure it won't change that much thereafter.
An example of retrieving data from a table having columns column1, column2 ,column3 column4, cloumn1 and 2 hold int values and column 3 and 4 hold varchar(10)
import java.sql.*;
// need to import this as the STEP 1. Has the classes that you mentioned
public class JDBCexample {
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://LocalHost:3306/databaseNameHere";
// DON'T PUT ANY SPACES IN BETWEEN and give the name of the database (case insensitive)
// database credentials
static final String USER = "root";
// usually when you install MySQL, it logs in as root
static final String PASS = "";
// and the default password is blank
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
try {
// registering the driver__STEP 2
Class.forName("com.mysql.jdbc.Driver");
// returns a Class object of com.mysql.jdbc.Driver
// (forName(""); initializes the class passed to it as String) i.e initializing the
// "suitable" driver
System.out.println("connecting to the database");
// opening a connection__STEP 3
conn = DriverManager.getConnection(DB_URL, USER, PASS);
// executing a query__STEP 4
System.out.println("creating a statement..");
stmt = conn.createStatement();
// creating an object to create statements in SQL
String sql;
sql = "SELECT column1, cloumn2, column3, column4 from jdbcTest;";
// this is what you would have typed in CLI for MySQL
ResultSet rs = stmt.executeQuery(sql);
// executing the query__STEP 5 (and retrieving the results in an object of ResultSet)
// extracting data from result set
while(rs.next()){
// retrieve by column name
int value1 = rs.getInt("column1");
int value2 = rs.getInt("column2");
String value3 = rs.getString("column3");
String value4 = rs.getString("columnm4");
// displaying values:
System.out.println("column1 "+ value1);
System.out.println("column2 "+ value2);
System.out.println("column3 "+ value3);
System.out.println("column4 "+ value4);
}
// cleaning up__STEP 6
rs.close();
stmt.close();
conn.close();
} catch (SQLException e) {
// handle sql exception
e.printStackTrace();
}catch (Exception e) {
// TODO: handle exception for class.forName
e.printStackTrace();
}finally{
//closing the resources..STEP 7
try {
if (stmt != null)
stmt.close();
} catch (SQLException e2) {
e2.printStackTrace();
}try {
if (conn != null) {
conn.close();
}
} catch (SQLException e2) {
e2.printStackTrace();
}
}
System.out.println("good bye");
}
}
You could also set onclick to call your function like this:
foo.onclick = function() { callYourJSFunction(arg1, arg2); };
This way, you can pass arguments too. .....
The excellent book "Algorithm Design Manual" by Skienna contains a huge repository of Algorithms and Data structure.
For tons of problems, data structures and algorithm are described, compared, and discusses the practical usage. The author also provides references to implementations and the original research papers.
The book is great to have it on your desk if you search the best data structure for your problem to solve. It is also very helpful for interview preparation.
Another great resource is the NIST Dictionary of Data structures and algorithms.
I think you can use CHECK constraint - it is exactly what it was invented for.
ALTER TABLE someTable
ADD CONSTRAINT someField_check CHECK (ISNUMERIC(someField) = 1) ;
My previous answer (also right by may be a bit overkill):
I think the right way is to use INSTEAD OF trigger to prevent the wrong data from being inserted (rather than deleting it post-factum)
When the game starts:
long tStart = System.currentTimeMillis();
When the game ends:
long tEnd = System.currentTimeMillis();
long tDelta = tEnd - tStart;
double elapsedSeconds = tDelta / 1000.0;
I hear your pain. I'm going through this right now (years later). From what I've learned, you can think of RTSP as a "VCR controller", the protocol allows you to specify which streams (presentations) you want to play, it will then send you a description of the media, and then you can use RTSP to play, stop, pause, and record the remote stream. The media itself goes over RTP. RTSP is normally implemented over a different socket or communication layer. Although it is simply a protocol, most often it's implemented by a server over a socket. For live streams, the RTSP stream you request is simply a name of a stream. It doesn't need to refer to a file on the server, the server's RTSP implementation can parse that stream, put together a live graph, and then provide the SDP (description) for that stream name. But, this is of course specific to the way the RTSP server has been implemented. For "live" streams, it's probably simpler to just use RTP, but you'll need a way to transfer the SDP from the RTP server to the client that wants to play that stream.
select unique red24.image_id from
(
select image_id from `list` where style_id = 24 and style_value = 'red'
) red24
inner join
(
select image_id from `list` where style_id = 25 and style_value = 'big'
) big25
on red24.image_id = big25.image_id
inner join
(
select image_id from `list` where style_id = 27 and style_value = 'round'
) round27
on red24.image_id = round27.image_id
Declare them outside the subroutines, like this:
Public wbA as Workbook
Public wbB as Workbook
Sub MySubRoutine()
Set wbA = Workbooks.Open("C:\file.xlsx")
Set wbB = Workbooks.Open("C:\file2.xlsx")
OtherSubRoutine
End Sub
Sub OtherSubRoutine()
MsgBox wbA.Name, vbInformation
End Sub
Alternately, you can pass variables between subroutines:
Sub MySubRoutine()
Dim wbA as Workbook
Dim wbB as Workbook
Set wbA = Workbooks.Open("C:\file.xlsx")
Set wbB = Workbooks.Open("C:\file2.xlsx")
OtherSubRoutine wbA, wbB
End Sub
Sub OtherSubRoutine(wb1 as Workbook, wb2 as Workbook)
MsgBox wb1.Name, vbInformation
MsgBox wb2.Name, vbInformation
End Sub
Or use Functions
to return values:
Sub MySubroutine()
Dim i as Long
i = MyFunction()
MsgBox i
End Sub
Function MyFunction()
'Lots of code that does something
Dim x As Integer, y as Double
For x = 1 to 1000
'Lots of code that does something
Next
MyFunction = y
End Function
In the second method, within the scope of OtherSubRoutine
you refer to them by their parameter names wb1
and wb2
. Passed variables do not need to use the same names, just the same variable types. This allows you some freedom, for example you have a loop over several workbooks, and you can send each workbook to a subroutine to perform some action on that Workbook, without making all (or any) of the variables public in scope.
A Note About User Forms
Personally I would recommend keeping Option Explicit
in all of your modules and forms (this prevents you from instantiating variables with typos in their names, like lCoutn
when you meant lCount
etc., among other reasons).
If you're using Option Explicit
(which you should), then you should qualify module-scoped variables for style and to avoid ambiguity, and you must qualify user-form Public
scoped variables, as these are not "public" in the same sense. For instance, i
is undefined, though it's Public
in the scope of UserForm1
:
You can refer to it as UserForm1.i
to avoid the compile error, or since forms are New
-able, you can create a variable object to contain reference to your form, and refer to it that way:
NB: In the above screenshots x
is declared Public x as Long
in another standard code module, and will not raise the compilation error. It may be preferable to refer to this as Module2.x
to avoid ambiguity and possible shadowing in case you re-use variable names...
Use MyClass.class.getClassLoader().getResourceAsStream(path)
to load resource associated with your code. Use MyClass.class.getResourceAsStream(path)
as a shortcut, and for resources packaged within your class' package.
Use Thread.currentThread().getContextClassLoader().getResourceAsStream(path)
to get resources that are part of client code, not tightly bounds to the calling code. You should be careful with this as the thread context class loader could be pointing at anything.
I don't know if this applies in this case, but sometimes the file got deleted for unknown reasons, copying it again into the respective folder should resolve the problem.
You are missing an echo. Each time that you want to show the value of a variable to HTML you need to echo it.
<input type="text" name="idtest" value="<?php echo $idtest; ?>" >
Note: Depending on the value, your echo is the function you use to escape it like htmlspecialchars.
Load GIF image Swift :
#1 : Copy the swift file from This Link :
#2 : Load GIF image Using Name
let jeremyGif = UIImage.gifImageWithName("funny")
let imageView = UIImageView(image: jeremyGif)
imageView.frame = CGRect(x: 20.0, y: 50.0, width: self.view.frame.size.width - 40, height: 150.0)
view.addSubview(imageView)
#3 : Load GIF image Using Data
let imageData = try? Data(contentsOf: Bundle.main.url(forResource: "play", withExtension: "gif")!)
let advTimeGif = UIImage.gifImageWithData(imageData!)
let imageView2 = UIImageView(image: advTimeGif)
imageView2.frame = CGRect(x: 20.0, y: 220.0, width:
self.view.frame.size.width - 40, height: 150.0)
view.addSubview(imageView2)
#4 : Load GIF image Using URL
let gifURL : String = "http://www.gifbin.com/bin/4802swswsw04.gif"
let imageURL = UIImage.gifImageWithURL(gifURL)
let imageView3 = UIImageView(image: imageURL)
imageView3.frame = CGRect(x: 20.0, y: 390.0, width: self.view.frame.size.width - 40, height: 150.0)
view.addSubview(imageView3)
OUTPUT :
iPhone 8 / iOS 11 / xCode 9
Int cannot accept null but if developer are using int? then you store null in int like int i = null; // not accept int? i = null; // its working mostly use for pagination in MVC Pagelist
This post on the bitbucket issue tracker of virtualenvwrapper may be of interest. It is mentioned there that most of virtualenvwrapper's functions work with the venv virtual environments in Python 3.3.
Have you updated the firmware version of the iPhone you are testing on?
This should solve your problem:
select replace(to_char(a, '90D90'),'.00','')
from
(
select 50 a from dual
union
select 50.57 from dual
union
select 5.57 from dual
union
select 0.35 from dual
union
select 0.4 from dual
);
Give a look also as this SQL Fiddle for test.
Check the below links for responsive table:
http://css-tricks.com/responsive-data-tables/
http://zurb.com/playground/responsive-tables
http://zurb.com/playground/projects/responsive-tables/index.html
I prefer to use git-bash.exe instead of sh.exe.
start "" "%ProgramFiles%\Git\git-bash.exe" -c "tail -f /c/Windows/win.ini"
You can stop closing the window when call /usr/bin/bash --login -i
in the end;
start "" "%ProgramFiles%\Git\git-bash.exe" -c "echo 1 && echo 2 && /usr/bin/bash --login -i"
Note: I'm not sure this is a good way :)
Adding this script to my code fixed the dropdown menu.
<script>
$(document).ready(function () {
$('.dropdown-toggle').dropdown();
});
</script>
the Microsoft XSD inference tool is a good, free solution. Many XML editing tools, such as XmlSpy (mentioned by @Garth Gilmour) or OxygenXML Editor also have that feature. They're rather expensive, though. BizTalk Server also has an XSD inferring tool as well.
edit: I just discovered the .net XmlSchemaInference class, so if you're using .net you should consider that
Swift
self.dismissViewControllerAnimated(true, completion: nil)
Use Linebreak:
<TextBlock>
<Run Text="Line1"/>
<LineBreak/>
<Run Text="Line2" FontStyle="Italic" FontSize="9"/>
<LineBreak/>
<Run Text="Line3"/>
</TextBlock>
Thanks,
RDV
I see this is quite an old post, but came across this looking for an answer for this problem. After reading some of the answers they seem very long winded, so after about 5 mins I managed to solve the problem very simply as follows:
httpd.conf for Apache leave the listen port as 80 and 'Server Name' as FQDN/IP :80.
Now for IIS go to Administrative Services > IIS Manager > 'Sites' in the Left hand nav drop down > in the right window select the top line (default web site) then bindings on the right.
Now select http > edit and change to 81 and enter your local IP for the server/pc and in domain enter either your FQDN (www.domain.com) or external IP close.
Restart both servers ensure your ports are open on both router and firewall, done.
This sounds long winded but literally took 5 mins of playing about. works perfectly.
System: Windows 8, IIS 8, Apache 2.2
To summarize an attribute accessor aka attr_accessor gives you two free methods.
Like in Java they get called getters and setters.
Many answers have shown good examples so I'm just going to be brief.
#the_attribute
and
#the_attribute=
In the old ruby docs a hash tag # means a method. It could also include a class name prefix... MyClass#my_method
This one works for me
CREATE Function [dbo].[RemoveNumericCharacters](@Temp VarChar(1000))
Returns VarChar(1000)
AS
Begin
Declare @NumRange as varchar(50) = '%[0-9]%'
While PatIndex(@NumRange, @Temp) > 0
Set @Temp = Stuff(@Temp, PatIndex(@NumRange, @Temp), 1, '')
Return @Temp
End
and you can use it like so
SELECT dbo.[RemoveNumericCharacters](Name) FROM TARGET_TABLE
Linux :
In command line
mysql -u username -p databasename < path/example.sql
put your table in example.sql
Import / Export for single table:
Export table schema
mysqldump -u username -p databasename tableName > path/example.sql
This will create a file named example.sql
at the path mentioned and write the create table
sql command to create table tableName
.
Import data into table
mysql -u username -p databasename < path/example.sql
This command needs an sql file containing data in form of insert
statements for table tableName
. All the insert
statements will be executed and the data will be loaded.
A quick one for modern browsers:
'14 2'.split(' ').map(Number);
// [14, 2]`
For django 1.8 that im using,
I made a command that you can create objects dynamically in the future, so you can just put the file path of the csv, the model name and the app name of the relevant django application, and it will populate the relevant model without specified the field names. so if we take for example the next csv:
field1,field2,field3
value1,value2,value3
value11,value22,value33
it will create the objects [{field1:value1,field2:value2,field3:value3}, {field1:value11,field2:value22,field3:value33}] for the model name you will enter to the command.
the command code:
from django.core.management.base import BaseCommand
from django.db.models.loading import get_model
import csv
class Command(BaseCommand):
help = 'Creating model objects according the file path specified'
def add_arguments(self, parser):
parser.add_argument('--path', type=str, help="file path")
parser.add_argument('--model_name', type=str, help="model name")
parser.add_argument('--app_name', type=str, help="django app name that the model is connected to")
def handle(self, *args, **options):
file_path = options['path']
_model = get_model(options['app_name'], options['model_name'])
with open(file_path, 'rb') as csv_file:
reader = csv.reader(csv_file, delimiter=',', quotechar='|')
header = reader.next()
for row in reader:
_object_dict = {key: value for key, value in zip(header, row)}
_model.objects.create(**_object_dict)
note that maybe in later versions
from django.db.models.loading import get_model
is deprecated and need to be change to
from django.apps.apps import get_model
My solution does not exactly correspond to your requirements, as it formally requires O(n)
"extra" space. However, considering my conditions it is very efficient in my practical application. Thus I think it should be interesting.
The special condition in my case is that I don't use drying machine, just hang my cloths on an ordinary cloth dryer. Hanging cloths requires O(n)
operations (by the way, I always consider bin packing problem here) and the problem by its nature requires the linear "extra" space. When I take a new sock from the bucket I to try hang it next to its pair if the pair is already hung. If its a sock from a new pair I leave some space next to it.
It obviously requires some extra work to check if there is the matching sock already hanging somewhere and it would render solution O(n^2)
with coefficient about 1/2
for a computer. But in this case the "human factor" is actually an advantage -- I usually can very quickly (almost O(1)
) identify the matching sock if it was already hung (probably some imperceptible in-brain caching is involved) -- consider it a kind of limited "oracle" as in Oracle Machine ;-) We, the humans have these advantages over digital machines in some cases ;-)
O(n)
!Thus connecting the problem of pairing socks with the problem of hanging cloths I get O(n)
"extra space" for free, and have a solution that is about O(n)
in time, requires just a little more work than simple hanging cloths and allows to immediately access complete pair of socks even in a very bad Monday morning... ;-)
If you're running ubuntu container directly without a local Dockerfile you can ssh into the container and enable root control by entering su
then apt-get install -y wget
You can check out my bash-based C call tree generator here. It lets you specify one or more C functions for which you want caller and/or called information, or you can specify a set of functions and determine the reachability graph of function calls that connects them... I.e. tell me all the ways main(), foo(), and bar() are connected. It uses graphviz/dot for a graphing engine.
I've been facing the issue with empty directories, too. The problem with using placeholder files is that you need to create them, and delete them, if they are not necessary anymore (because later on there were added sub-directories or files. With big source trees managing these placeholder files can be cumbersome and error prone.
This is why I decided to write an open source tool which can manage the creation/deletion of such placeholder files automatically. It is written for .NET platform and runs under Mono (.NET for Linux) and Windows.
Just have a look at: http://code.google.com/p/markemptydirs
The best way is to use a List
within a List
:
List<List<String>> listOfLists = new ArrayList<List<String>>();
You must specify that the friend is a template function:
MyClass<T>& operator+=<>(const MyClass<T>& classObj);
See this C++ FAQ Lite answer for details.
A short version:
$NewString = substr_replace($String,$Replacement,strrpos($String,$Replace),strlen($Replace));
For those getting this error in after installing .NET Framework 4.6 - Read and install one of these hotfixes to resolve the issue.
{{-- Google Language Translator START --}}
<style>
.google-translate {
display: inline-block;
vertical-align: top;
padding-top: 15px;
}
.goog-logo-link {
display: none !important;
}
.goog-te-gadget {
color: transparent !important;
}
#google_translate_element {
display: none;
}
.goog-te-banner-frame.skiptranslate {
display: none !important;
}
body {
top: 0px !important;
}
</style>
<script src="{{asset('js/translate-google.js')}}"></script>
<script type="text/javascript">
function googleTranslateElementInit2(){
new google.translate.TranslateElement({
pageLanguage:'en',
includedLanguages: 'en,es',
// https://ctrlq.org/code/19899-google-translate-languages
// includedLanguages: 'en,it,la,fr',
// layout: google.translate.TranslateElement.InlineLayout.SIMPLE,
autoDisplay:true
},'google_translate_element2');
var a = document.querySelector("#google_translate_element select");
// console.log(a);
if(a){
a.selectedIndex=1;
a.dispatchEvent(new Event('change'));
}
}
</script>
<ul class="navbar-nav my-lg-0 m-r-10">
<li>
<div class="google-translate">
<div id="google_translate_element2"></div>
</div>
</li>
{{-- Google Language Translator ENDS --}}
// translate-google.js
(function () {
var gtConstEvalStartTime = new Date();
function d(b) {
var a = document.getElementsByTagName("head")[0];
a || (a = document.body.parentNode.appendChild(document.createElement("head")));
a.appendChild(b)
}
function _loadJs(b) {
// console.log(b);
var a = document.createElement("script");
a.type = "text/javascript";
a.charset = "UTF-8";
a.src = b;
d(a)
}
function _loadCss(b) {
var a = document.createElement("link");
a.type = "text/css";
a.rel = "stylesheet";
a.charset = "UTF-8";
a.href = b;
d(a)
}
function _isNS(b) {
b = b.split(".");
for (var a = window, c = 0; c < b.length; ++c)
if (!(a = a[b[c]])) return !1;
return !0
}
function _setupNS(b) {
b = b.split(".");
for (var a = window, c = 0; c < b.length; ++c) a.hasOwnProperty ? a.hasOwnProperty(b[c]) ? a = a[b[c]] : a = a[b[c]] = {} : a = a[b[c]] || (a[b[c]] = {});
return a
}
window.addEventListener && "undefined" == typeof document.readyState && window.addEventListener("DOMContentLoaded", function () {
document.readyState = "complete"
}, !1);
if (_isNS('google.translate.Element')) {
return
}(function () {
var c = _setupNS('google.translate._const');
c._cest = gtConstEvalStartTime;
gtConstEvalStartTime = undefined;
c._cl = 'en';
c._cuc = 'googleTranslateElementInit2';
c._cac = '';
c._cam = '';
c._ctkk = eval('((function(){var a\x3d3002255536;var b\x3d-2533142796;return 425386+\x27.\x27+(a+b)})())');
var h = 'translate.googleapis.com';
var s = (true ? 'https' : window.location.protocol == 'https:' ? 'https' : 'http') + '://';
var b = s + h;
c._pah = h;
c._pas = s;
c._pbi = b + '/translate_static/img/te_bk.gif';
c._pci = b + '/translate_static/img/te_ctrl3.gif';
c._pli = b + '/translate_static/img/loading.gif';
c._plla = h + '/translate_a/l';
c._pmi = b + '/translate_static/img/mini_google.png';
c._ps = b + '/translate_static/css/translateelement.css';
c._puh = 'translate.google.com';
_loadCss(c._ps);
_loadJs(b + '/translate_static/js/element/main.js');
})();
})();
You can make a class for your global variable and then export this class like this:
export class CONSTANT {
public static message2 = [
{ "NAME_REQUIRED": "Name is required" }
]
public static message = {
"NAME_REQUIRED": "Name is required",
}
}
After creating and exporting your CONSTANT
class, you should import this class in that class where you want to use, like this:
import { Component, OnInit } from '@angular/core';
import { CONSTANT } from '../../constants/dash-constant';
@Component({
selector : 'team-component',
templateUrl: `../app/modules/dashboard/dashComponents/teamComponents/team.component.html`,
})
export class TeamComponent implements OnInit {
constructor() {
console.log(CONSTANT.message2[0].NAME_REQUIRED);
console.log(CONSTANT.message.NAME_REQUIRED);
}
ngOnInit() {
console.log("oninit");
console.log(CONSTANT.message2[0].NAME_REQUIRED);
console.log(CONSTANT.message.NAME_REQUIRED);
}
}
You can use this either in constructor
or ngOnInit(){}
, or in any predefine methods.
see HELP FOR
and see the examples
or quick try this
for /F %%a in ("AAA BBB CCC DDD EEE FFF") do echo %%c
I do not know what I am doing but that worked for me :
OTHER_BRIDGE=br-xxxxx # this is the other random docker bridge (`ip addr` to find)
service docker stop
ip link set dev $OTHER_BRIDGE down
ip link set dev docker0 down
ip link delete $OTHER_BRIDGE type bridge
ip link delete docker0 type bridge
service docker start && service docker stop
iptables -t nat -A POSTROUTING ! -o docker0 -s 172.17.0.0/16 -j MASQUERADE
iptables -t nat -A POSTROUTING ! -o docker0 -s 172.18.0.0/16 -j MASQUERADE
service docker start
$date = new DateTime('2000-12-31');
$date->modify('+1 day');
echo $date->format('Y-m-d') . "\n";
Fahrenheit to celsius would be (Fahrenheit - 32) * 5 / 9
Use sys.getsizeof
to get the size of an object, in bytes.
>>> from sys import getsizeof
>>> a = 42
>>> getsizeof(a)
12
>>> a = 2**1000
>>> getsizeof(a)
146
>>>
Note that the size and layout of an object is purely implementation-specific. CPython, for example, may use totally different internal data structures than IronPython. So the size of an object may vary from implementation to implementation.
Find spring-boot-starter-test in your pom.xml and modify it as follows:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<exclusions>
<exclusion>
<artifactId>commons-logging</artifactId>
<groupId>commons-logging</groupId>
</exclusion>
</exclusions>
<scope>test</scope>
</dependency>
It fixed error like:
_Caused by: java.lang.IllegalArgumentException:_ **LoggerFactory** is not a **Logback LoggerContext** but *Logback* is on the classpath.
Either remove **Logback** or the competing implementation
(_class org.apache.logging.slf4j.Log4jLoggerFactory_
loaded from file:
**${M2_HOME}/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.6.2/log4j-slf4j-impl-2.6.2.jar**).
If you are using WebLogic you will need to add **'org.slf4j'** to prefer-application-packages in WEB-INF/weblogic.xml: **org.apache.logging.slf4j.Log4jLoggerFactory**
When a JSF view (Facelets/JSP file) get built/restored, a JSF component tree will be produced. At that moment, the view build time, all binding
attributes are evaluated (along with id
attribtues and taghandlers like JSTL). When the JSF component needs to be created before being added to the component tree, JSF will check if the binding
attribute returns a precreated component (i.e. non-null
) and if so, then use it. If it's not precreated, then JSF will autocreate the component "the usual way" and invoke the setter behind binding
attribute with the autocreated component instance as argument.
In effects, it binds a reference of the component instance in the component tree to a scoped variable. This information is in no way visible in the generated HTML representation of the component itself. This information is in no means relevant to the generated HTML output anyway. When the form is submitted and the view is restored, the JSF component tree is just rebuilt from scratch and all binding
attributes will just be re-evaluated like described in above paragraph. After the component tree is recreated, JSF will restore the JSF view state into the component tree.
Important to know and understand is that the concrete component instances are effectively request scoped. They're newly created on every request and their properties are filled with values from JSF view state during restore view phase. So, if you bind the component to a property of a backing bean, then the backing bean should absolutely not be in a broader scope than the request scope. See also JSF 2.0 specitication chapter 3.1.5:
3.1.5 Component Bindings
...
Component bindings are often used in conjunction with JavaBeans that are dynamically instantiated via the Managed Bean Creation facility (see Section 5.8.1 “VariableResolver and the Default VariableResolver”). It is strongly recommend that application developers place managed beans that are pointed at by component binding expressions in “request” scope. This is because placing it in session or application scope would require thread-safety, since UIComponent instances depends on running inside of a single thread. There are also potentially negative impacts on memory management when placing a component binding in “session” scope.
Otherwise, component instances are shared among multiple requests, possibly resulting in "duplicate component ID" errors and "weird" behaviors because validators, converters and listeners declared in the view are re-attached to the existing component instance from previous request(s). The symptoms are clear: they are executed multiple times, one time more with each request within the same scope as the component is been bound to.
And, under heavy load (i.e. when multiple different HTTP requests (threads) access and manipulate the very same component instance at the same time), you may face sooner or later an application crash with e.g. Stuck thread at UIComponent.popComponentFromEL, or Java Threads at 100% CPU utilization using richfaces UIDataAdaptorBase and its internal HashMap, or even some "strange" IndexOutOfBoundsException
or ConcurrentModificationException
coming straight from JSF implementation source code while JSF is busy saving or restoring the view state (i.e. the stack trace indicates saveState()
or restoreState()
methods and like).
binding
on a bean property is bad practiceRegardless, using binding
this way, binding a whole component instance to a bean property, even on a request scoped bean, is in JSF 2.x a rather rare use case and generally not the best practice. It indicates a design smell. You normally declare components in the view side and bind their runtime attributes like value
, and perhaps others like styleClass
, disabled
, rendered
, etc, to normal bean properties. Then, you just manipulate exactly that bean property you want instead of grabbing the whole component and calling the setter method associated with the attribute.
In cases when a component needs to be "dynamically built" based on a static model, better is to use view build time tags like JSTL, if necessary in a tag file, instead of createComponent()
, new SomeComponent()
, getChildren().add()
and what not. See also How to refactor snippet of old JSP to some JSF equivalent?
Or, if a component needs to be "dynamically rendered" based on a dynamic model, then just use an iterator component (<ui:repeat>
, <h:dataTable>
, etc). See also How to dynamically add JSF components.
Composite components is a completely different story. It's completely legit to bind components inside a <cc:implementation>
to the backing component (i.e. the component identified by <cc:interface componentType>
. See also a.o. Split java.util.Date over two h:inputText fields representing hour and minute with f:convertDateTime and How to implement a dynamic list with a JSF 2.0 Composite Component?
binding
in local scopeHowever, sometimes you'd like to know about the state of a different component from inside a particular component, more than often in use cases related to action/value dependent validation. For that, the binding
attribute can be used, but not in combination with a bean property. You can just specify an in the local EL scope unique variable name in the binding
attribute like so binding="#{foo}"
and the component is during render response elsewhere in the same view directly as UIComponent
reference available by #{foo}
. Here are several related questions where such a solution is been used in the answer:
Use an EL expression to pass a component ID to a composite component in JSF
(and that's only from the last month...)
The data in COL1 is in dd-mon-yy
No it's not. A DATE
column does not have any format. It is only converted (implicitely) to that representation by your SQL client when you display it.
If COL1 is really a DATE
column using to_date()
on it is useless because to_date()
converts a string to a DATE.
You only need to_char(), nothing else:
SELECT TO_CHAR(col1, 'mm/dd/yyyy')
FROM TABLE1
What happens in your case is that calling to_date()
converts the DATE
into a character value (applying the default NLS format) and then converting that back to a DATE. Due to this double implicit conversion some information is lost on the way.
Edit
So you did make that big mistake to store a DATE in a character column. And that's why you get the problems now.
The best (and to be honest: only sensible) solution is to convert that column to a DATE
. Then you can convert the values to any rerpresentation that you want without worrying about implicit data type conversion.
But most probably the answer is "I inherited this model, I have to cope with it" (it always is, apparently no one ever is responsible for choosing the wrong datatype), then you need to use RR
instead of YY
:
SELECT TO_CHAR(TO_DATE(COL1,'dd-mm-rr'), 'mm/dd/yyyy')
FROM TABLE1
should do the trick. Note that I also changed mon
to mm
as your example is 27-11-89
which has a number for the month, not an "word" (like NOV)
For more details see the manual: http://docs.oracle.com/cd/B28359_01/server.111/b28286/sql_elements004.htm#SQLRF00215
You could do something along these lines (which worked in both Python v2.7.17 and v3.8.1 when I tested it/them):
def hi():
# other code...
hi.bye = 42 # Create function attribute.
sigh = 10
hi()
print(hi.bye) # -> 42
Functions are objects in Python and can have arbitrary attributes assigned to them.
If you're going to be doing this kind of thing often, you could implement something more generic by creating a function decorator that adds a this
argument to each call to the decorated function.
This additional argument will give functions a way to reference themselves without needing to explicitly embed (hardcode) their name into the rest of the definition and is similar to the instance argument that class methods automatically receive as their first argument which is usually named self
— I picked something different to avoid confusion, but like the self
argument, it can be named whatever you wish.
Here's an example of that approach:
def add_this_arg(func):
def wrapped(*args, **kwargs):
return func(wrapped, *args, **kwargs)
return wrapped
@add_this_arg
def hi(this, that):
# other code...
this.bye = 2 * that # Create function attribute.
sigh = 10
hi(21)
print(hi.bye) # -> 42
This doesn't work for class methods. Just use the self
argument already passed being passed to instead of the method name. You can reference class-level attributes through type(self)
. See Function's attributes when in a class.
To search for the string and output just that line with the search string:
for i in $(find /path/of/target/directory -type f); do grep -i "the string to look for" "$i"; done
e.g.:
for i in $(find /usr/share/applications -type f); \
do grep -i "web browser" "$i"; done
To display filename containing the search string:
for i in $(find /path/of/target/directory -type f); do if grep -i "the string to look for" "$i" > /dev/null; then echo "$i"; fi; done;
e.g.:
for i in $(find /usr/share/applications -type f); \
do if grep -i "web browser" "$i" > /dev/null; then echo "$i"; \
fi; done;
You should always try to use a composite object with concrete types (using composite design pattern) rather than a list of object types. Who would remember what the heck each of those objects is? Think about maintenance of your code later on... Instead, try something like this:
Public (Class or Structure) MyPerson
public string FirstName { get; set; }
public string LastName { get; set; }
public string Address { get; set; }
public int ZipCode { get; set; }
End Class
And then:
Dim person as new MyPerson With { .FirstName = “Joe”,
.LastName = "Smith”,
...
}
backgroundWorker1.RunWorkerAsync(person)
and then:
private void backgroundWorker1_DoWork (object sender, DoWorkEventArgs e)
{
MyPerson person = e.Argument as MyPerson
string firstname = person.FirstName;
string lastname = person.LastName;
int zipcode = person.ZipCode;
}
If you are reluctant to change your existing code to std::array
, then use a couple of methods instead which takes non-type template arguments :
//Passed arrays store different data types
template <typename T, typename U, int size1, int size2>
bool equal(T (&arr1)[size1], U (&arr2)[size2] ){
return false;
}
//Passed arrays store SAME data types
template <typename T, int size1, int size2>
bool equal(T (&arr1)[size1], T (&arr2)[size2] ){
if(size1 == size2) {
for(int i = 0 ; i < size1; ++i){
if(arr1[i] != arr2[i]) return false;
}
return true;
}
return false;
}
Here is the demo. Note that, while calling, we just need to pass the array variables e.g. equal(iar1, iar2)
in your case, no need to pass the size of arrays.
There is also the parse
module.
parse()
is designed to be the opposite of format()
(the newer string formatting function in Python 2.6 and higher).
>>> from parse import parse
>>> parse('{} fish', '1')
>>> parse('{} fish', '1 fish')
<Result ('1',) {}>
>>> parse('{} fish', '2 fish')
<Result ('2',) {}>
>>> parse('{} fish', 'red fish')
<Result ('red',) {}>
>>> parse('{} fish', 'blue fish')
<Result ('blue',) {}>
I came here hoping to find a way to get the sum across all columns in a data table and run into issues implementing the above solutions. A way to add a column with the sum across all columns uses the cbind
function:
cbind(data, total = rowSums(data))
This method adds a total
column to the data and avoids the alignment issue yielded when trying to sum across ALL columns using the above solutions (see the post below for a discussion of this issue).
In order to avoid this kind of ClassCastException, if you have:
class A
class B extends A
You can define a constructor in B that takes an object of A. This way we can do the "cast" e.g.:
public B(A a) {
super(a.arg1, a.arg2); //arg1 and arg2 must be, at least, protected in class A
// If B class has more attributes, then you would initilize them here
}
Your model is null
because the way you're supplying the inputs to your form means the model binder has no way to distinguish between the elements. Right now, this code:
@foreach (var planVM in Model)
{
@Html.Partial("_partialView", planVM)
}
is not supplying any kind of index to those items. So it would repeatedly generate HTML output like this:
<input type="hidden" name="yourmodelprefix.PlanID" />
<input type="hidden" name="yourmodelprefix.CurrentPlan" />
<input type="checkbox" name="yourmodelprefix.ShouldCompare" />
However, as you're wanting to bind to a collection, you need your form elements to be named with an index, such as:
<input type="hidden" name="yourmodelprefix[0].PlanID" />
<input type="hidden" name="yourmodelprefix[0].CurrentPlan" />
<input type="checkbox" name="yourmodelprefix[0].ShouldCompare" />
<input type="hidden" name="yourmodelprefix[1].PlanID" />
<input type="hidden" name="yourmodelprefix[1].CurrentPlan" />
<input type="checkbox" name="yourmodelprefix[1].ShouldCompare" />
That index is what enables the model binder to associate the separate pieces of data, allowing it to construct the correct model. So here's what I'd suggest you do to fix it. Rather than looping over your collection, using a partial view, leverage the power of templates instead. Here's the steps you'd need to follow:
EditorTemplates
folder inside your view's current folder (e.g. if your view is Home\Index.cshtml
, create the folder Home\EditorTemplates
).PlanCompareViewModel.cshtml
.Now, everything you have in your partial view wants to go in that template:
@model PlanCompareViewModel
<div>
@Html.HiddenFor(p => p.PlanID)
@Html.HiddenFor(p => p.CurrentPlan)
@Html.CheckBoxFor(p => p.ShouldCompare)
<input type="submit" value="Compare"/>
</div>
Finally, your parent view is simplified to this:
@model IEnumerable<PlanCompareViewModel>
@using (Html.BeginForm("ComparePlans", "Plans", FormMethod.Post, new { id = "compareForm" }))
{
<div>
@Html.EditorForModel()
</div>
}
DisplayTemplates
and EditorTemplates
are smart enough to know when they are handling collections. That means they will automatically generate the correct names, including indices, for your form elements so that you can correctly model bind to a collection.
The colClasses vector must have length equal to the number of imported columns. Supposing the rest of your dataset columns are 5:
colClasses=c("character",rep("numeric",5))
use
import console
(width, height) = console.getTerminalSize()
print "Your terminal's width is: %d" % width
EDIT: oh, I'm sorry. That's not a python standard lib one, here's the source of console.py (I don't know where it's from).
The module seems to work like that: It checks if termcap
is available, when yes. It uses that; if no it checks whether the terminal supports a special ioctl
call and that does not work, too, it checks for the environment variables some shells export for that.
This will probably work on UNIX only.
def getTerminalSize():
import os
env = os.environ
def ioctl_GWINSZ(fd):
try:
import fcntl, termios, struct, os
cr = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ,
'1234'))
except:
return
return cr
cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
if not cr:
try:
fd = os.open(os.ctermid(), os.O_RDONLY)
cr = ioctl_GWINSZ(fd)
os.close(fd)
except:
pass
if not cr:
cr = (env.get('LINES', 25), env.get('COLUMNS', 80))
### Use get(key[, default]) instead of a try/catch
#try:
# cr = (env['LINES'], env['COLUMNS'])
#except:
# cr = (25, 80)
return int(cr[1]), int(cr[0])
I think I got what I was looking for..
data.train <- read.table("Assign2.WineComplete.csv",sep=",",header=T)
fit <- rpart(quality ~ ., method="class",data=data.train)
plot(fit)
text(fit, use.n=TRUE)
summary(fit)
When you perform a boolean comparison between two vectors in R, the "expectation" is that both vectors are of the same length, so that R can compare each corresponding element in turn.
R has a much loved (or hated) feature called recycling, whereby in many circumstances if you try to do something where R would normally expect objects to be of the same length, it will automatically extend, or recycle, the shorter object to force both objects to be of the same length.
If the longer object is a multiple of the shorter, this amounts to simply repeating the shorter object several times. Oftentimes R programmers will take advantage of this to do things more compactly and with less typing.
But if they are not multiples, R will worry that you may have made a mistake, and perhaps didn't mean to perform that comparison, hence the warning.
Explore yourself with the following code:
> x <- 1:3
> y <- c(1,2,4)
> x == y
[1] TRUE TRUE FALSE
> y1 <- c(y,y)
> x == y1
[1] TRUE TRUE FALSE TRUE TRUE FALSE
> y2 <- c(y,2)
> x == y2
[1] TRUE TRUE FALSE FALSE
Warning message:
In x == y2 :
longer object length is not a multiple of shorter object length
A slightly modified version of Sophie's answer which allows to output the *.d files to a different folder (I will only paste the interesting part that generates the dependency files):
$(OBJDIR)/%.o: %.cpp
# Generate dependency file
mkdir -p $(@D:$(OBJDIR)%=$(DEPDIR)%)
$(CXX) $(CXXFLAGS) $(CPPFLAGS) -MM -MT $@ $< -MF $(@:$(OBJDIR)/%.o=$(DEPDIR)/%.d)
# Generate object file
mkdir -p $(@D)
$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $< -o $@
Note that the parameter
-MT $@
is used to ensure that the targets (i.e. the object file names) in the generated *.d files contain the full path to the *.o files and not just the file name.
I don't know why this parameter is NOT needed when using -MMD in combination with -c (as in Sophie's version). In this combination it seems to write the full path of the *.o files into the *.d files. Without this combination, -MMD also writes only the pure file names without any directory components into the *.d files. Maybe somebody knows why -MMD writes the full path when combined with -c. I have not found any hint in the g++ man page.
count of the contained lists in the outmost list
int count = data.size();
lambda to get the count of the contained inner lists
int count = data.stream().collect( summingInt(l -> l.size()) );
I came up with this function which works for me, hope this will help somebody
$word_list = 'word1, word2, word3, word4';
$str = 'This string contains word1 in it';
function checkStringAgainstList($str, $word_list)
{
$word_list = explode(', ', $word_list);
$str = explode(' ', $str);
foreach ($str as $word):
if (in_array(strtolower($word), $word_list)) {
return TRUE;
}
endforeach;
return false;
}
Also, note that answers with strpos() will return true if the matching word is a part of other word. For example if word list contains 'st' and if your string contains 'street', strpos() will return true
Based on this article, you should:
create new branch which is based upon new version of master
git branch -b newmaster
merge your old feature branch into new one
git checkout newmaster
resolve conflict on new feature branch
The first two commands can be combined to git checkout -b newmaster
.
This way your history stays clear because you don't need back merges. And you don't need to be so super cautious since you don't need to do a Git rebase.
Adding another solution (Python 3) - Iterating over json files in a directory and on each file iterating over all objects and printing relevant fields.
See comments in the code.
import os,json
data_path = '/path/to/your/json/files'
# 1. Iterate over directory
directory = os.fsencode(data_path)
for file in os.listdir(directory):
filename = os.fsdecode(file)
# 2. Take only json files
if filename.endswith(".json"):
file_full_path=data_path+filename
# 3. Open json file
with open(file_full_path, encoding='utf-8', errors='ignore') as json_data:
data_in_file = json.load(json_data, strict=False)
# 4. Iterate over objects and print relevant fields
for json_object in data_in_file:
print("ttl: %s, desc: %s" % (json_object['title'],json_object['description']) )
How about this?
CREATE FUNCTION dbo.StripWWWandCom (@input VARCHAR(250))
RETURNS VARCHAR(250)
AS BEGIN
DECLARE @Work VARCHAR(250)
SET @Work = @Input
SET @Work = REPLACE(@Work, 'www.', '')
SET @Work = REPLACE(@Work, '.com', '')
RETURN @work
END
and then use:
SELECT ID, dbo.StripWWWandCom (WebsiteName)
FROM dbo.YourTable .....
Of course, this is severely limited in that it will only strip www.
at the beginning and .com
at the end - nothing else (so it won't work on other host machine names like smtp.yahoo.com
and other internet domains such as .org
, .edu
, .de
and etc.)
Try your code like this:
var app = express();
app.get('/test', function(req, res) {
res.sendFile('views/test.html', {root: __dirname })
});
Use res.sendFile instead of reading the file manually so express can handle setting the content-type properly for you.
You don't need the app.engine
line, as that is handled internally by express.
I would suggest using the new mixins approach described there: https://blogs.msdn.microsoft.com/typescript/2017/02/22/announcing-typescript-2-2/
This approach is better, than the "applyMixins" approach described by Fenton, because the autocompiler would help you and show all the methods / properties from the both base and 2nd inheritance classes.
This approach might be checked on the TS Playground site.
Here is the implementation:
class MainClass {
testMainClass() {
alert("testMainClass");
}
}
const addSecondInheritance = (BaseClass: { new(...args) }) => {
return class extends BaseClass {
testSecondInheritance() {
alert("testSecondInheritance");
}
}
}
// Prepare the new class, which "inherits" 2 classes (MainClass and the cass declared in the addSecondInheritance method)
const SecondInheritanceClass = addSecondInheritance(MainClass);
// Create object from the new prepared class
const secondInheritanceObj = new SecondInheritanceClass();
secondInheritanceObj.testMainClass();
secondInheritanceObj.testSecondInheritance();
Inspired by Nelson's and Chris' comments, I've found a way to workaround the same origin policy with a div
and an iframe
:
HTML:
<div id='div_iframe'><iframe id='frame' src='...'></iframe></div>
CSS:
#div_iframe {
border-style: inset;
border-color: grey;
overflow: scroll;
height: 500px;
width: 90%
}
#frame {
width: 100%;
height: 1000%; /* 10x the div height to embrace the whole page */
}
Now suppose I want to skip the first 438 (vertical) pixels of the iframe page, by scrolling to that position.
JS solution:
document.getElementById('div_iframe').scrollTop = 438
JQuery solution:
$('#div_iframe').scrollTop(438)
CSS solution:
#frame { margin-top: -438px }
(Each solution alone is enough, and the effect of the CSS one is a little different since you can't scroll up to see the top of the iframed page.)
Here is the easiest way that I found after working on this:
string javascript = "alert('Hello');";
// or any combination of your JavaScript commands
// (including function calls, variables... etc)
// WebBrowser webBrowser1 is what you are using for your web browser
webBrowser1.Document.InvokeScript("eval", new object[] { javascript });
What global JavaScript function eval(str)
does is parses and executes whatever is written in str.
Check w3schools ref here.
Open command line cmd and run this: adb backup -f C:\Intel\xxx.ab -noapk your.app.package. Do not enter password and click on Backup my data. Make sure not to save on drive C root. You may be denied. This is why I saved on C:\Intel.
I suggest you to use URL rewrite mod is enough for your problem,I have the same problem but using URL rewrite mod and getting good SEO response. I can give you a small example. Example is that you consider WordPress , here the data is stored in database but using URL rewrite mod many WordPress websites getting good responses from Google and got rank also.
Example: wordpress url with out url rewrite mod -- domain.com/?p=123 after url rewrite mode -- domain.com/{title of article} like domain.com/seo-url-rewrite-mod
i think you have understood what i want to say you
Here is my solution, there is no way to use momemt.js.Here is DataTable with Two DatePickers for DateRange (To and From) Filter.
$.fn.dataTable.ext.search.push(
function (settings, data, dataIndex) {
var min = $('#min').datepicker("getDate");
var max = $('#max').datepicker("getDate");
var startDate = new Date(data[4]);
if (min == null && max == null) { return true; }
if (min == null && startDate <= max) { return true; }
if (max == null && startDate >= min) { return true; }
if (startDate <= max && startDate >= min) { return true; }
return false;
}
);
-- i use something like this, with concepts and some code stolen from asktom.
-- suggestions for improvements are welcome
WITH
sess AS
(
SELECT *
FROM V$SESSION
WHERE USERNAME = USER
ORDER BY SID
)
SELECT si.SID,
si.LOCKWAIT,
si.OSUSER,
si.PROGRAM,
si.LOGON_TIME,
si.STATUS,
(
SELECT ROUND(USED_UBLK*8/1024,1)
FROM V$TRANSACTION,
sess
WHERE sess.TADDR = V$TRANSACTION.ADDR
AND sess.SID = si.SID
) rollback_remaining,
(
SELECT (MAX(DECODE(PIECE, 0,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 1,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 2,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 3,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 4,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 5,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 6,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 7,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 8,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 9,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 10,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 11,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 12,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 13,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 14,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 15,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 16,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 17,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 18,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 19,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 20,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 21,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 22,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 23,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 24,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 25,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 26,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 27,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 28,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 29,SQL_TEXT,NULL)))
FROM V$SQLTEXT_WITH_NEWLINES
WHERE ADDRESS = SI.SQL_ADDRESS AND
PIECE < 30
) SQL_TEXT
FROM sess si;
Add Content-length
header describing size of zip file in bytes.
header("Content-type: application/zip");
header("Content-Disposition: attachment; filename=$archive_file_name");
header("Content-length: " . filesize($archive_file_name));
header("Pragma: no-cache");
header("Expires: 0");
readfile("$archive_file_name");
Also make sure that there is absolutely no white space before <?
and after ?>
. I see a space here:
?
<?php
$file_names = array('iMUST Operating Manual V1.3a.pdf','iMUST Product Information Sheet.pdf');
You may, redefine the a
tag using angular directive:
angular.module('myApp').directive('a', function() {
return {
restrict: 'E',
link: function(scope, elem, attrs) {
if ('disabled' in attrs) {
elem.on('click', function(e) {
e.preventDefault(); // prevent link click
});
}
}
};
});
In html:
<a href="nextPage" disabled>Next</a>
In addition to the above answer and restarting the IDE didn't do, try restarting "Jetbrains Toolbox" if you use it, this did it for me
A little gem in the discussion above - thanks to @Codest and @Kevin Pullin. In TortoiseHg, there's a dropdown option adjacent to the commit button. Selecting "Amend current revision" brings back the comment and the list of files. SO useful.
Android recommends that you call Environment.getExternalStorageDirectory.getPath()
instead of hardcoding /sdcard/
in path name. This returns the primary shared/external storage directory. So, if storage is emulated, this will return /storage/emulated/0
. If you explore the device storage with a file explorer, the said directory will be /mnt/sdcard
(confirmed on Xperia Z2 running Android 6).
Now you must have API key. You can generate that in google developer console. Here is LINK to the explanation.
1.7976931348623157 × 10^308
http://en.wikipedia.org/wiki/Double_precision_floating-point_format
In TASM (x86 assembly) it can look like this:
cmp BL, BH
je EQUAL ; BL = BH
jg GREATER ; BL > BH
jmp LESS ; BL < BH
in this case it compares two 8bit numbers that we temporarily store in the higher and the lower part of the register B. Alternatively you might also consider using jbe
(if BL <= BH) or jge
/jae
(if BL >= BH).
Hopefully someone finds it helpful :)
you can use .NET's built in method to remove the QueryString
.
i.e., Request.QueryString.Remove["whatever"];
here whatever in the [ ] is name of the
querystring
which you want to remove.
Try this... I hope this will help.
Yes, using Cookies. But be careful, don't put too much in them (I think there is a limit at 4kb). But a few variables are ok.
If you need to store considerably more than that, check out @Annie's great tips in the other answer. For small time data storage, I would say Cookies are the easiest thing.
Note that cookies are stored client side.
echo date('d-m-Y', strtotime('+7 days'));
Missing driver file.
This error is really common for people just getting started with PDI.
Drivers go in \pentaho\design-tools\data-integration\libext\JDBC for PDI. If you are using other tools in the Pentaho suite, you may need to copy drivers to additional locations for those tools. For reference, here are the appropriate folders for some of the other design tools:
If this transformation or job will run on another box, such as a test or production server, don't forget to include copying the jar file and restarting PDI or the Data Integration Server in your deployment considerations.
increment your loop variable only when the try clause succeeds
I had this issue too because I was filtering /src/main/resources and forgot I had added a keystore (*.jks) binary to this directory.
Add a "resource" block with exclusions for binary files and your problem may be resolved.
<build>
<finalName>somename</finalName>
<testResources>
<testResource>
<directory>src/test/resources</directory>
<filtering>false</filtering>
</testResource>
</testResources>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<excludes>
<exclude>*.jks</exclude>
<exclude>*.png</exclude>
</excludes>
</resource>
</resources>
...
The length of an array is immutable in java. This means you can't change the size of an array once you have created it. If you initialised it with 2 elements, its length is 2. You can however use a different collection.
List<Integer> myList = new ArrayList<Integer>();
myList.add(5);
myList.add(7);
And with a wrapper method
public void addMember(Integer x) {
myList.add(x);
};
http://en.wikibooks.org/wiki/LaTeX/Tables#Resize_tables talks about two ways to do this.
I used:
\scalebox{0.7}{
\begin{tabular}
...
\end{tabular}
}
Use subprocess.check_output
(new in python 2.7). It will suppress stdout and raise an exception if the command fails. (It actually returns the contents of stdout, so you can use that later in your program if you want.) Example:
import subprocess
try:
subprocess.check_output(['espeak', text])
except subprocess.CalledProcessError:
# Do something
You can also suppress stderr with:
subprocess.check_output(["espeak", text], stderr=subprocess.STDOUT)
For earlier than 2.7, use
import os
import subprocess
with open(os.devnull, 'w') as FNULL:
try:
subprocess._check_call(['espeak', text], stdout=FNULL)
except subprocess.CalledProcessError:
# Do something
Here, you can suppress stderr with
subprocess._check_call(['espeak', text], stdout=FNULL, stderr=FNULL)
This just requires a small change to my last answer:
my ($guid, $scheme, $star) = $line =~ m{
The [ ] Scheme [ ] GUID: [ ]
([a-zA-Z0-9-]+) #capture the guid
[ ]
\( (.+) \) #capture the scheme
(?:
[ ]
([*]) #capture the star
)? #if it exists
}x;
Based on the very helpful answer by joran I was able to come up with this solution for a stable color scale for a boolean factor (TRUE
, FALSE
).
boolColors <- as.character(c("TRUE"="#5aae61", "FALSE"="#7b3294"))
boolScale <- scale_colour_manual(name="myboolean", values=boolColors)
ggplot(myDataFrame, aes(date, duration)) +
geom_point(aes(colour = myboolean)) +
boolScale
Since ColorBrewer isn't very helpful with binary color scales, the two needed colors are defined manually.
Here myboolean
is the name of the column in myDataFrame
holding the TRUE/FALSE factor. date
and duration
are the column names to be mapped to the x and y axis of the plot in this example.
So if you just have a string and not a window.location you could use...
String.prototype.toUrl = function(){
if(!this && 0 < this.length)
{
return undefined;
}
var original = this.toString();
var s = original;
if(!original.toLowerCase().startsWith('http'))
{
s = 'http://' + original;
}
s = this.split('/');
var protocol = s[0];
var host = s[2];
var relativePath = '';
if(s.length > 3){
for(var i=3;i< s.length;i++)
{
relativePath += '/' + s[i];
}
}
s = host.split('.');
var domain = s[s.length-2] + '.' + s[s.length-1];
return {
original: original,
protocol: protocol,
domain: domain,
host: host,
relativePath: relativePath,
getParameter: function(param)
{
return this.getParameters()[param];
},
getParameters: function(){
var vars = [], hash;
var hashes = this.original.slice(this.original.indexOf('?') + 1).split('&');
for (var i = 0; i < hashes.length; i++) {
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
};};
How to use.
var str = "http://en.wikipedia.org/wiki/Knopf?q=1&t=2";
var url = str.toUrl;
var host = url.host;
var domain = url.domain;
var original = url.original;
var relativePath = url.relativePath;
var paramQ = url.getParameter('q');
var paramT = url.getParamter('t');
While React.js is a parent Javascript library for developing web applications.
While you use tags like <View>
, <Text>
very frequently in React-Native, React.js uses web html tags like <div>
<h1>
<h2>
, which are only synonyms in dictionary of web/mobile developments.
For React.js you need DOM for path rendering of html tags, while for mobile application: React-Native uses AppRegistry to register your app.
I hope this is an easy explanation for quick differences/similarities in React.js and React-Native.
if needed programmatic from a PDE or JDT code:
public static void setWorkspaceAutoBuild(boolean flag) throws CoreException
{
IWorkspace workspace = ResourcesPlugin.getWorkspace();
final IWorkspaceDescription description = workspace.getDescription();
description.setAutoBuilding(flag);
workspace.setDescription(description);
}
To read both the first and final line of a file you could...
readline()
, ...def readlastline(f):
f.seek(-2, 2) # Jump to the second last byte.
while f.read(1) != b"\n": # Until EOL is found ...
f.seek(-2, 1) # ... jump back, over the read byte plus one more.
return f.read() # Read all data from this point on.
with open(file, "rb") as f:
first = f.readline()
last = readlastline(f)
Jump to the second last byte directly to prevent trailing newline characters to cause empty lines to be returned*.
The current offset is pushed ahead by one every time a byte is read so the stepping backwards is done two bytes at a time, past the recently read byte and the byte to read next.
The whence
parameter passed to fseek(offset, whence=0)
indicates that fseek
should seek to a position offset
bytes relative to...
0
or os.SEEK_SET
= The beginning of the file.1
or os.SEEK_CUR
= The current position.2
or os.SEEK_END
= The end of the file.* As would be expected as the default behavior of most applications, including print
and echo
, is to append one to every line written and has no effect on lines missing trailing newline character.
1-2 million lines each and I have to do this for several hundred files.
I timed this method and compared it against against the top answer.
10k iterations processing a file of 6k lines totalling 200kB: 1.62s vs 6.92s.
100 iterations processing a file of 6k lines totalling 1.3GB: 8.93s vs 86.95.
Millions of lines would increase the difference a lot more.
Exakt code used for timing:
with open(file, "rb") as f:
first = f.readline() # Read and store the first line.
for last in f: pass # Read all lines, keep final value.
A more complex, and harder to read, variation to address comments and issues raised since.
Also adds support for multibyte delimiters, readlast(b'X<br>Y', b'<br>', fixed=False)
.
Please note that this variation is really slow for large files because of the non-relative offsets needed in text mode. Modify to your need, or do not use it at all as you're probably better off using f.readlines()[-1]
with files opened in text mode.
#!/bin/python3
from os import SEEK_END
def readlast(f, sep, fixed=True):
r"""Read the last segment from a file-like object.
:param f: File to read last line from.
:type f: file-like object
:param sep: Segment separator (delimiter).
:type sep: bytes, str
:param fixed: Treat data in ``f`` as a chain of fixed size blocks.
:type fixed: bool
:returns: Last line of file.
:rtype: bytes, str
"""
bs = len(sep)
step = bs if fixed else 1
if not bs:
raise ValueError("Zero-length separator.")
try:
o = f.seek(0, SEEK_END)
o = f.seek(o-bs-step) # - Ignore trailing delimiter 'sep'.
while f.read(bs) != sep: # - Until reaching 'sep': Read sep-sized block
o = f.seek(o-step) # and then seek to the block to read next.
except (OSError,ValueError): # - Beginning of file reached.
f.seek(0)
return f.read()
def test_readlast():
from io import BytesIO, StringIO
# Text mode.
f = StringIO("first\nlast\n")
assert readlast(f, "\n") == "last\n"
# Bytes.
f = BytesIO(b'first|last')
assert readlast(f, b'|') == b'last'
# Bytes, UTF-8.
f = BytesIO("X\nY\n".encode("utf-8"))
assert readlast(f, b'\n').decode() == "Y\n"
# Bytes, UTF-16.
f = BytesIO("X\nY\n".encode("utf-16"))
assert readlast(f, b'\n\x00').decode('utf-16') == "Y\n"
# Bytes, UTF-32.
f = BytesIO("X\nY\n".encode("utf-32"))
assert readlast(f, b'\n\x00\x00\x00').decode('utf-32') == "Y\n"
# Multichar delimiter.
f = StringIO("X<br>Y")
assert readlast(f, "<br>", fixed=False) == "Y"
# Make sure you use the correct delimiters.
seps = { 'utf8': b'\n', 'utf16': b'\n\x00', 'utf32': b'\n\x00\x00\x00' }
assert "\n".encode('utf8' ) == seps['utf8']
assert "\n".encode('utf16')[2:] == seps['utf16']
assert "\n".encode('utf32')[4:] == seps['utf32']
# Edge cases.
edges = (
# Text , Match
("" , "" ), # Empty file, empty string.
("X" , "X" ), # No delimiter, full content.
("\n" , "\n"),
("\n\n", "\n"),
# UTF16/32 encoded U+270A (b"\n\x00\n'\n\x00"/utf16)
(b'\n\xe2\x9c\x8a\n'.decode(), b'\xe2\x9c\x8a\n'.decode()),
)
for txt, match in edges:
for enc,sep in seps.items():
assert readlast(BytesIO(txt.encode(enc)), sep).decode(enc) == match
if __name__ == "__main__":
import sys
for path in sys.argv[1:]:
with open(path) as f:
print(f.readline() , end="")
print(readlast(f,"\n"), end="")
Use : $window.location.href = '/Home.html';
on your Promise response you requested
response.json()
but this works well if your server sends json response in return especially if you're using Node Js on the server side
So check again and make sure your server sends json as response as said if its NodeJS the response could be
res.json(YOUR-DATA-RESPONSE)
Try to pass the serializable list using Bundle.Serializable:
Bundle bundle = new Bundle();
bundle.putSerializable("value", all_thumbs);
intent.putExtras(bundle);
And in SomeClass Activity get it as:
Intent intent = this.getIntent();
Bundle bundle = intent.getExtras();
List<Thumbnail> thumbs=
(List<Thumbnail>)bundle.getSerializable("value");
You can run PHP as with any web-server, using the SPHP module for node.
It's compatible but not dependent on express.
It also supports websockets requests on the HTTP port.
Its biased for speed under small load, rather then saving resources.
To install in node:
npm install sphp
in you app:
var express = require('express');
var sphp = require('sphp');
var app = express();
var server = app.listen(8080);
app.use(sphp.express('public/'));
app.use(express.static('public/'));
For more information, look at https://github.com/paragi/sphp
I'm slightly biased too because I'm the author :)
There is a much easier way using the library http://svg.codeplex.com/ (Newer version @GIT, @NuGet). Here is my code
var byteArray = Encoding.ASCII.GetBytes(svgFileContents);
using (var stream = new MemoryStream(byteArray))
{
var svgDocument = SvgDocument.Open(stream);
var bitmap = svgDocument.Draw();
bitmap.Save(path, ImageFormat.Png);
}
$result2 is resource link not a string to echo
it or to replace some of its parts with str_replace()
.
You can do a P/Invoke to MoveFileEx()
- pass 11 for flags
(MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH
)
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
static extern bool MoveFileEx(string existingFileName, string newFileName, int flags);
Or, you can just call
Microsoft.VisualBasic.FileIO.FileSystem.MoveFile(existingFileName, newFileName, true);
after adding Microsoft.VisualBasic as a reference.
I think this might help.
SELECT datetime(strftime('%s','now'), 'unixepoch', 'localtime');
Avoid async void
. Have your methods return Task
instead of void
. Then you can await
them.
Like this:
private async Task RequestToSendOutputReport(List<byte[]> byteArrays)
{
foreach (byte[] b in byteArrays)
{
while (condition)
{
// we'll typically execute this code many times until the condition is no longer met
Task t = SendOutputReportViaInterruptTransfer();
await t;
}
// read some data from device; we need to wait for this to return
await RequestToGetInputReport();
}
}
private async Task RequestToGetInputReport()
{
// lots of code prior to this
int bytesRead = await GetInputReportViaInterruptTransfer();
}
That's pretty easy:
class Sample {
private String message = null;
private final Object lock = new Object();
public void newMessage(String x) {
synchronized (lock) {
message = x;
}
}
public String getMessage() {
synchronized (lock) {
String temp = message;
message = null;
return temp;
}
}
}
Note that I didn't either make the methods themselves synchronized or synchronize on this
. I firmly believe that it's a good idea to only acquire locks on objects which only your code has access to, unless you're deliberately exposing the lock. It makes it a lot easier to reassure yourself that nothing else is going to acquire locks in a different order to your code, etc.
If performance and memory is an issue, I suggest this very efficient implementation. According to Heap's algorithm in Wikipedia, it should be the fastest. Hope it will fits your need :-) !
Just as comparison of this with a Linq implementation for 10! (code included):
Linq: 36288000 items in 50051 millisecs
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
namespace WpfPermutations
{
/// <summary>
/// EO: 2016-04-14
/// Generator of all permutations of an array of anything.
/// Base on Heap's Algorithm. See: https://en.wikipedia.org/wiki/Heap%27s_algorithm#cite_note-3
/// </summary>
public static class Permutations
{
/// <summary>
/// Heap's algorithm to find all pmermutations. Non recursive, more efficient.
/// </summary>
/// <param name="items">Items to permute in each possible ways</param>
/// <param name="funcExecuteAndTellIfShouldStop"></param>
/// <returns>Return true if cancelled</returns>
public static bool ForAllPermutation<T>(T[] items, Func<T[], bool> funcExecuteAndTellIfShouldStop)
{
int countOfItem = items.Length;
if (countOfItem <= 1)
{
return funcExecuteAndTellIfShouldStop(items);
}
var indexes = new int[countOfItem];
for (int i = 0; i < countOfItem; i++)
{
indexes[i] = 0;
}
if (funcExecuteAndTellIfShouldStop(items))
{
return true;
}
for (int i = 1; i < countOfItem;)
{
if (indexes[i] < i)
{ // On the web there is an implementation with a multiplication which should be less efficient.
if ((i & 1) == 1) // if (i % 2 == 1) ... more efficient ??? At least the same.
{
Swap(ref items[i], ref items[indexes[i]]);
}
else
{
Swap(ref items[i], ref items[0]);
}
if (funcExecuteAndTellIfShouldStop(items))
{
return true;
}
indexes[i]++;
i = 1;
}
else
{
indexes[i++] = 0;
}
}
return false;
}
/// <summary>
/// This function is to show a linq way but is far less efficient
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list"></param>
/// <param name="length"></param>
/// <returns></returns>
static IEnumerable<IEnumerable<T>> GetPermutations<T>(IEnumerable<T> list, int length)
{
if (length == 1) return list.Select(t => new T[] { t });
return GetPermutations(list, length - 1)
.SelectMany(t => list.Where(e => !t.Contains(e)),
(t1, t2) => t1.Concat(new T[] { t2 }));
}
/// <summary>
/// Swap 2 elements of same type
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="a"></param>
/// <param name="b"></param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
static void Swap<T>(ref T a, ref T b)
{
T temp = a;
a = b;
b = temp;
}
/// <summary>
/// Func to show how to call. It does a little test for an array of 4 items.
/// </summary>
public static void Test()
{
ForAllPermutation("123".ToCharArray(), (vals) =>
{
Debug.Print(String.Join("", vals));
return false;
});
int[] values = new int[] { 0, 1, 2, 4 };
Debug.Print("Non Linq");
ForAllPermutation(values, (vals) =>
{
Debug.Print(String.Join("", vals));
return false;
});
Debug.Print("Linq");
foreach(var v in GetPermutations(values, values.Length))
{
Debug.Print(String.Join("", v));
}
// Performance
int count = 0;
values = new int[10];
for(int n = 0; n < values.Length; n++)
{
values[n] = n;
}
Stopwatch stopWatch = new Stopwatch();
stopWatch.Reset();
stopWatch.Start();
ForAllPermutation(values, (vals) =>
{
foreach(var v in vals)
{
count++;
}
return false;
});
stopWatch.Stop();
Debug.Print($"Non Linq {count} items in {stopWatch.ElapsedMilliseconds} millisecs");
count = 0;
stopWatch.Reset();
stopWatch.Start();
foreach (var vals in GetPermutations(values, values.Length))
{
foreach (var v in vals)
{
count++;
}
}
stopWatch.Stop();
Debug.Print($"Linq {count} items in {stopWatch.ElapsedMilliseconds} millisecs");
}
}
}
No need to explicitly go to the end of line before doing a
, use A
;
Append text at the end of line [count] times
<ESC>GA
Sort by _id
descending:
collection.find(filter={"keyword": keyword}, sort=[( "_id", -1 )])
Sort by _id
ascending:
collection.find(filter={"keyword": keyword}, sort=[( "_id", 1 )])
String.contains(String)
or String.indexOf(String)
- suggested
"abc".contains("Z"); // false - correct
"zzzz".contains("Z"); // false - correct
"Z".contains("Z"); // true - correct
"and".contains(""); // true - correct
"and".contains(""); // false - correct
"and".indexOf(""); // 0 - correct
"and".indexOf(""); // -1 - correct
String.indexOf(int)
and carefully considered String.indexOf(char)
with char to int
widening
"and".indexOf("".charAt(0)); // 0 though incorrect usage has correct output due to portion of correct data
"and".indexOf("".charAt(0)); // 0 -- incorrect usage and ambiguous result
"and".indexOf("".codePointAt(0)); // -1 -- correct usage and correct output
char
or Character
considered as single character?No. In the context of unicode characters, char
or Character
can sometimes be part of a single character
and should not be treated as a complete single character
logically.
Any system supporting character encodings for Unicode characters should consider unicode's codepoint as single character.
So Java should do that very clear & loud rather than exposing too much of internal implementation details to users.
String
class is bad at abstraction (though it requires confusingly good amount of understanding of its encapsulations to understand the abstraction
and hence an anti-pattern
).
char
usage?char
can be only be mapped to a character in Basic Multilingual Plane.
Only codePoint - int
can cover the complete range of Unicode characters.
char
is internally treated as 16-bit
unsigned value and could not represent all the unicode characters using UTF-16 internal representation using only 2-bytes
. Sometimes, values in a 16-bit
range have to be combined with another 16-bit
value to correctly define character.
Without getting too verbose, the usage of indexOf
, charAt
, length
and such methods should be more explicit. Sincerely hoping Java will add new UnicodeString
and UnicodeCharacter
classes with clearly defined abstractions.
contains
and not indexOf(int)
char
in java.char
is not sufficientindexOf
takes in an int
, char
to int
conversion masks this from the user and user might do something like str.indexOf(someotherstr.charAt(0))
(unless the user is aware of the exact context)CharSequence
(aka String
) is better public static void main(String[] args) {
System.out.println("and".indexOf("".charAt(0))); // 0 though incorrect usage has correct output due to portion of correct data
System.out.println("and".indexOf("".charAt(0))); // 0 -- incorrect usage and ambiguous result
System.out.println("and".indexOf("".codePointAt(0))); // -1 -- correct usage and correct output
System.out.println("and".contains("")); // true - correct
System.out.println("and".contains("")); // false - correct
}
How about the below solution? It worked for me. Try this:
.modal .modal-body {
max-height: 420px;
overflow-y: auto;
}
Details:
overflow-y: auto;
or overflow: auto;
from .modal class (important)max-height: 400px;
from .modal
class (important)max-height: 400px;
to .modal .modal-body (or what ever, can be 420px
or less, but would not go more than 450px
)overflow-y: auto;
to .modal .modal-body
Done, only body will scroll.
I also had to save Base64 encoded images that are part of data URLs, so I ended up making a small npm module to do it in case I (or someone else) needed to do it again in the future. It's called ba64.
Simply put, it takes a data URL with a Base64 encoded image and saves the image to your file system. It can save synchronously or asynchronously. It also has two helper functions, one to get the file extension of the image, and the other to separate the Base64 encoding from the data:
scheme prefix.
Here's an example:
var ba64 = require("ba64"),
data_url = "data:image/jpeg;base64,[Base64 encoded image goes here]";
// Save the image synchronously.
ba64.writeImageSync("myimage", data_url); // Saves myimage.jpeg.
// Or save the image asynchronously.
ba64.writeImage("myimage", data_url, function(err){
if (err) throw err;
console.log("Image saved successfully");
// do stuff
});
Install it: npm i ba64 -S
. Repo is on GitHub: https://github.com/HarryStevens/ba64.
P.S. It occurred to me later that ba64 is probably a bad name for the module since people may assume it does Base64 encoding and decoding, which it doesn't (there are lots of modules that already do that). Oh well.
I wanted something that took the field management completely out of the browser's hands, so to speak. In this example, there's a single standard text input field to capture a password — no email, user name etc...
<input id='input_password' type='text' autocomplete='off' autofocus>
There's a variable named "input", set to be an empty string...
var input = "";
The field events are monitored by JQuery...
$("#input_password").off().on("focus", function(event) {
$(this).val("");
input = "";
}).on("keypress", function(event) {
event.preventDefault();
if (event.key !== "Enter" && event.key.match(/^[0-9a-z!@#\$%&*-_]/)) {
$(this).val( $(this).val() + "•" );
input += event.key;
}
else if (event.key == "Enter") {
var params = {};
params.password = input;
$.post(SERVER_URL, params, function(data, status, ajax) {
location.reload();
});
}
}).on("keyup", function(event) {
var navigationKeys = ["Home", "End", "ArrowLeft", "ArrowRight", "ArrowUp", "ArrowDown"];
if ($.inArray(event.key, navigationKeys) > -1) {
event.preventDefault();
$(this).val("");
input = "";
}
else if (event.key == "Backspace") {
var length = $(this).val().length - 1 > 0 ? $(this).val().length : 0;
input = input.substring(0, length);
}
});
Front-End Summary
In essence, this gives the browser nothing useful to capture. Even if it overrides the autocomplete setting, and/or presents a dropdown with previously entered values, all it has is bullets stored for the field value.
Server Details (optional reading)
As shown above, Javascript executes location.reload() as soon as the server returns a JSON response. (This logon technique is for access to a restricted administration tool. Some of the overkill, related to the cookie content, could be skipped for a more generalized implementation.) Here are the details:
You need to slightly modify your compare
function and use functools.cmp_to_key
to pass it to sorted
. Example code:
import functools
lst = [list(range(i, i+5)) for i in range(5, 1, -1)]
def fitness(item):
return item[0]+item[1]+item[2]+item[3]+item[4]
def compare(item1, item2):
return fitness(item1) - fitness(item2)
sorted(lst, key=functools.cmp_to_key(compare))
Output:
[[2, 3, 4, 5, 6], [3, 4, 5, 6, 7], [4, 5, 6, 7, 8], [5, 6, 7, 8, 9]]
Works :)
Returning 0 should tell the programmer that the program has successfully finished the job.
I got the resources on C# (Desktop WPF W/ .NET Framework 4.8) using the code below
{DefaultNamespace}.Properties.Resources.{ResourceName}
You've already done it correctly by using a DateTime
parameter with the value from the DateTime
, so it should already work. Forget about ToString()
- since that isn't used here.
If there is a difference, it is most likely to do with different precision between the two environments; maybe choose a rounding (seconds, maybe?) and use that. Also keep in mind UTC/local/unknown (the DB has no concept of the "kind" of date; .NET does).
I have a table and the date-times in it are in the format:
2011-07-01 15:17:33.357
Note that datetimes in the database aren't in any such format; that is just your query-client showing you white lies. It is stored as a number (and even that is an implementation detail), because humans have this odd tendency not to realise that the date you've shown is the same as 40723.6371916281
. Stupid humans. By treating it simply as a "datetime" throughout, you shouldn't get any problems.
Using REQUIRES_NEW
is only relevant when the method is invoked from a transactional context; when the method is invoked from a non-transactional context, it will behave exactly as REQUIRED
- it will create a new transaction.
That does not mean that there will only be one single transaction for all your clients - each client will start from a non-transactional context, and as soon as the the request processing will hit a @Transactional
, it will create a new transaction.
So, with that in mind, if using REQUIRES_NEW
makes sense for the semantics of that operation - than I wouldn't worry about performance - this would textbook premature optimization - I would rather stress correctness and data integrity and worry about performance once performance metrics have been collected, and not before.
On rollback - using REQUIRES_NEW
will force the start of a new transaction, and so an exception will rollback that transaction. If there is also another transaction that was executing as well - that will or will not be rolled back depending on if the exception bubbles up the stack or is caught - your choice, based on the specifics of the operations.
Also, for a more in-depth discussion on transactional strategies and rollback, I would recommend: «Transaction strategies: Understanding transaction pitfalls», Mark Richards.
You should put in WEB-INF any pages, or pieces of pages, that you do not want to be public. Usually, JSP or facelets are found outside WEB-INF, but in this case they are easily accesssible for any user. In case you have some authorization restrictions, WEB-INF can be used for that.
WEB-INF/lib can contain 3rd party libraries which you do not want to pack at system level (JARs can be available for all the applications running on your server), but only for this particular applciation.
Generally speaking, many configurations files also go into WEB-INF.
As for WEB-INF/classes - it exists in any web-app, because that is the folder where all the compiled sources are placed (not JARS, but compiled .java files that you wrote yourself).
You can use the invert (~) operator (which acts like a not for boolean data):
new_df = df[~df["col"].str.contains(word)]
, where new_df
is the copy returned by RHS.
contains also accepts a regular expression...
If the above throws a ValueError, the reason is likely because you have mixed datatypes, so use na=False
:
new_df = df[~df["col"].str.contains(word, na=False)]
Or,
new_df = df[df["col"].str.contains(word) == False]
Here's a variation, using the version of fs
that uses promises:
const fs = require('fs');
await fs.promises.writeFile('../data/phraseFreqs.json', JSON.stringify(output)); // UTF-8 is default
That message isn't actually an error - it's just a warning that the file in question isn't of the right architecture (e.g. 32-bit vs 64-bit, wrong CPU architecture). The linker will keep looking for a library of the right type.
Of course, if you're also getting an error along the lines of can't find lPI-Http
then you have a problem :-)
It's hard to suggest what the exact remedy will be without knowing the details of your build system and makefiles, but here are a couple of shots in the dark:
CFLAGS
rather than
CTAGS
- are you sure this is
correct? (What you have may be correct - this will depend on your build system!)LDFLAGS
If that doesn't help - can you post the full error output, plus the actual command (e.g. gcc foo.c -m32 -Dxxx
etc) that was being executed?
Beside of read.csv(url("..."))
you also can use read.table("http://...")
.
Example:
> sample <- read.table("http://www.ats.ucla.edu/stat/examples/ara/angell.txt")
> sample
V1 V2 V3 V4 V5
1 Rochester 19.0 20.6 15.0 E
2 Syracuse 17.0 15.6 20.2 E
...
43 Atlanta 4.2 70.6 32.6 S
>