In addition to the other answer, I would like to point out that this reasoning is also known as the De Morgan's law. It's actually more about mathematics than programming, but it is so fundamental that every programmer should know about it.
Your problem started like this:
enabled = A and B
disabled = not ( A and B )
So far so good, but you went one step further and tried to remove the braces.
And that's a little tricky, because you have to replace the and
/&&
with an or
/||
.
not ( A and B ) = not(A) OR not(B)
Or in a more mathematical notation:
I always keep this law in mind whenever I simplify conditions or work with probabilities.
$ echo 'hello:world:again' |sed 's/:.*//'
hello
To get all the values from a list of dictionaries, use the following code :
list = [{'text': 1, 'b': 2}, {'text': 3, 'd': 4}, {'text': 5, 'f': 6}]
subtitle=[]
for value in list:
subtitle.append(value['text'])
Simply do this:
<object data="resume.pdf" type="application/pdf" width="100%" height="800px">
<p>It appears you don't have a PDF plugin for this browser.
No biggie... you can <a href="resume.pdf">click here to
download the PDF file.</a></p>
</object>
Here is another way to loop through XML elements using JDOM.
List<Element> nodeNodes = inputNode.getChildren();
if (nodeNodes != null) {
for (Element nodeNode : nodeNodes) {
List<Element> elements = nodeNode.getChildren(elementName);
if (elements != null) {
elements.size();
nodeNodes.removeAll(elements);
}
}
Most probably it has to do with caching on the device. Catching the exception and ignoring is not nice but my problem was fixed and it seems to work.
You can use vanilla javascript by simply writing:
var width = el.clientWidth;
You could also use this to get the width of the document as follows:
var docWidth = document.documentElement.clientWidth || document.body.clientWidth;
Source: MDN
You can also get the width of the full window, including the scrollbar, as follows:
var fullWidth = window.innerWidth;
However this is not supported by all browsers, so as a fallback, you may want to use docWidth
as above, and add on the scrollbar width.
Source: MDN
Pure css way to make a table fully responsive, no JavaScript is needed. Checke demo here Responsive Tables
<!DOCTYPE>
<html>
<head>
<title>Responsive Table</title>
<style>
/* only for demo purpose. you can remove it */
.container{border: 1px solid #ccc; background-color: #ff0000;
margin: 10px auto;width: 98%; height:auto;padding:5px; text-align: center;}
/* required */
.tablewrapper{width: 95%; overflow-y: hidden; overflow-x: auto;
background-color:green; height: auto; padding: 5px;}
/* only for demo purpose just for stlying. you can remove it */
table { font-family: arial; font-size: 13px; padding: 2px 3px}
table.responsive{ background-color:#1a99e6; border-collapse: collapse;
border-color: #fff}
tr:nth-child(1) td:nth-of-type(1){
background:#333; color: #fff}
tr:nth-child(1) td{
background:#333; color: #fff; font-weight: bold;}
table tr td:nth-child(2) {
background:yellow;
}
tr:nth-child(1) td:nth-of-type(2){color: #333}
tr:nth-child(odd){ background:#ccc;}
tr:nth-child(even){background:#fff;}
</style>
</head>
<body>
<div class="container">
<div class="tablewrapper">
<table class="responsive" width="98%" cellpadding="4" cellspacing="1" border="1">
<tr>
<td>Name</td>
<td>Email</td>
<td>Phone</td>
<td>Address</td>
<td>Contact</td>
<td>Mobile</td>
<td>Office</td>
<td>Home</td>
<td>Residency</td>
<td>Height</td>
<td>Weight</td>
<td>Color</td>
<td>Desease</td>
<td>Extra</td>
<td>DOB</td>
<td>Nick Name</td>
</tr>
<tr>
<td>RN Kushwaha</td>
<td>[email protected]</td>
<td>--</td>
<td>Varanasi</td>
<td>-</td>
<td>999999999</td>
<td>022-111111</td>
<td>-</td>
<td>India</td>
<td>165cm</td>
<td>58kg</td>
<td>bright</td>
<td>--</td>
<td>--</td>
<td>03/07/1986</td>
<td>Aryan</td>
</tr>
</table>
</div>
</div>
</body>
</html>
Codeigniter is an MVC (Model - View - Controller) framework. It's really not a good idea to call a function from the view. The view should be used just for presentation, and all your logic should be happening before you get to the view in the controllers and models.
A good start for clarifying the best practice is to follow this tutorial:
https://codeigniter.com/user_guide/tutorial/index.html
It's simple, but it really lays out an excellent how-to.
I hope this helps!
Use Timer for this
private System.Windows.Forms.Timer timer1;
private int counter = 60;
private void btnStart_Click_1(object sender, EventArgs e)
{
timer1 = new System.Windows.Forms.Timer();
timer1.Tick += new EventHandler(timer1_Tick);
timer1.Interval = 1000; // 1 second
timer1.Start();
lblCountDown.Text = counter.ToString();
}
private void timer1_Tick(object sender, EventArgs e)
{
counter--;
if (counter == 0)
timer1.Stop();
lblCountDown.Text = counter.ToString();
}
similar to Roberto Williams Battista's answer above, but hopefully a bit more robust:
df.insert(len(df.columns)-1, 'b', df.pop('b'))
df.insert(len(df.columns)-1, 'x', df.pop('x'))
You can use the toolchain file mechanism of cmake for this purpose, see e.g. here. You write a toolchain file for each compiler containing the corresponding definitions. At config time, you run e.g
cmake -DCMAKE_TOOLCHAIN_FILE=/path/to/clang-toolchain.cmake ..
and all the compiler information will be set during the project() call from the toolchain file. Though in the documentation is mentionend only in the context of cross-compiling, it works as well for different compilers on the same system.
android:textAppearance="?android:attr/textAppearanceLarge"
seemed no effect.
android:minHeight="?android:attr/listPreferredItemHeight"
changed the height for me
You cannot multiply an integer by a string. To be sure, you could try using the int (short for integer which means whole number) command, like this for example -
firstNumber = int(9)
secondNumber = int(1)
answer = (firstNumber*secondNumber)
Hope that helped :)
Add STATS=10
or STATS=1
in backup command.
BACKUP DATABASE [xxxxxx] TO DISK = N'E:\\Bachup_DB.bak' WITH NOFORMAT, NOINIT,
NAME = N'xxxx-Complète Base de données Sauvegarde', SKIP, NOREWIND, NOUNLOAD, COMPRESSION, STATS = 10
GO.
You can access capturing groups like this:
var myString = "something format_abc";_x000D_
var myRegexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;_x000D_
var match = myRegexp.exec(myString);_x000D_
console.log(match[1]); // abc
_x000D_
And if there are multiple matches you can iterate over them:
var myString = "something format_abc";_x000D_
var myRegexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;_x000D_
match = myRegexp.exec(myString);_x000D_
while (match != null) {_x000D_
// matched text: match[0]_x000D_
// match start: match.index_x000D_
// capturing group n: match[n]_x000D_
console.log(match[0])_x000D_
match = myRegexp.exec(myString);_x000D_
}
_x000D_
As you can see the way to iterate over multiple matches was not very intuitive. This lead to the proposal of the String.prototype.matchAll
method. This new method is expected to ship in the ECMAScript 2020 specification. It gives us a clean API and solves multiple problems. It has been started to land on major browsers and JS engines as Chrome 73+ / Node 12+ and Firefox 67+.
The method returns an iterator and is used as follows:
const string = "something format_abc";_x000D_
const regexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;_x000D_
const matches = string.matchAll(regexp);_x000D_
_x000D_
for (const match of matches) {_x000D_
console.log(match);_x000D_
console.log(match.index)_x000D_
}
_x000D_
As it returns an iterator, we can say it's lazy, this is useful when handling particularly large numbers of capturing groups, or very large strings. But if you need, the result can be easily transformed into an Array by using the spread syntax or the Array.from
method:
function getFirstGroup(regexp, str) {
const array = [...str.matchAll(regexp)];
return array.map(m => m[1]);
}
// or:
function getFirstGroup(regexp, str) {
return Array.from(str.matchAll(regexp), m => m[1]);
}
In the meantime, while this proposal gets more wide support, you can use the official shim package.
Also, the internal workings of the method are simple. An equivalent implementation using a generator function would be as follows:
function* matchAll(str, regexp) {
const flags = regexp.global ? regexp.flags : regexp.flags + "g";
const re = new RegExp(regexp, flags);
let match;
while (match = re.exec(str)) {
yield match;
}
}
A copy of the original regexp is created; this is to avoid side-effects due to the mutation of the lastIndex
property when going through the multple matches.
Also, we need to ensure the regexp has the global flag to avoid an infinite loop.
I'm also happy to see that even this StackOverflow question was referenced in the discussions of the proposal.
Use numpy.delete() - returns a new array with sub-arrays along an axis deleted
numpy.delete(a, index)
For your specific question:
import numpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete()
returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new object is created. I.e., to quote the delete()
docs:
"A copy of arr with the elements specified by obj removed. Note that delete does not occur in-place..."
If the code I post has output, it is the result of running the code.
This will be validated by compiler, so you won't mix up indices accidentally.
NSDictionary *stateStrings =
@{
@(MCSessionStateNotConnected) : @"MCSessionStateNotConnected",
@(MCSessionStateConnecting) : @"MCSessionStateConnecting",
@(MCSessionStateConnected) : @"MCSessionStateConnected",
};
NSString *stateString = [stateStrings objectForKey:@(state)];
var stateStrings: [MCSessionState: String] = [
.notConnected : "MCSessionState.notConnected",
.connecting : "MCSessionState.connecting",
.connected : "MCSessionState.connected"
]
var stateString = stateStrings[MCSessionState.Connected]
UPDATE: A more Swifty way is to extend the enum with CustomStringConvertible
conformance. Also, this way the compiler will safeguard to implement every new addition to the underlying enum (whereas using arrays does not), as switch
statements must be exhaustive.
extension MCSessionState: CustomStringConvertible {
public var description: String {
switch self {
case .notConnected:
return "MCSessionState.notConnected"
case .connecting:
return "MCSessionState.connecting"
case .connected:
return "MCSessionState.connected"
@unknown default:
return "Unknown"
}
}
}
// You can use it like this.
var stateString = MCSessionState.connected.description
// Or this.
var stateString = "\(MCSessionState.connected)"
I'm adding another option. The answers above were very useful for me, but I wanted to use jQuery instead of ic-ajax (it seems to have a dependency with Ember when I tried to install through bower). Keep in mind that this solution only works on modern browsers.
In order to implement this on jQuery I used jQuery BinaryTransport. This is a nice plugin to read AJAX responses in binary format.
Then you can do this to download the file and send the headers:
$.ajax({
url: url,
type: 'GET',
dataType: 'binary',
headers: headers,
processData: false,
success: function(blob) {
var windowUrl = window.URL || window.webkitURL;
var url = windowUrl.createObjectURL(blob);
anchor.prop('href', url);
anchor.prop('download', fileName);
anchor.get(0).click();
windowUrl.revokeObjectURL(url);
}
});
The vars in the above script mean:
$('a.download-link')
.Use a single formatted text column[1] for storing the tags and use a capable full text search engine to index this. Else you will run into scaling problems when trying to implement boolean queries.
If you need details about the tags you have, you can either keep track of it in a incrementally maintained table or run a batch job to extract the information.
[1] Some RDBMS even provide a native array type which might be even better suited for storage by not needing a parsing step, but might cause problems with the full text search.
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)
Math.Round(0.5) returns zero due to floating point rounding errors, so you'll need to add a rounding error amount to the original value to ensure it doesn't round down, eg.
Console.WriteLine(Math.Round(0.5, 0).ToString()); // outputs 0 (!!)
Console.WriteLine(Math.Round(1.5, 0).ToString()); // outputs 2
Console.WriteLine(Math.Round(0.5 + 0.00000001, 0).ToString()); // outputs 1
Console.WriteLine(Math.Round(1.5 + 0.00000001, 0).ToString()); // outputs 2
Console.ReadKey();
You have to change the extends Activity to extends AppCompactActivity then try set and getSupportActionBar()
This worked for me.. adding empty view ..
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
<com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
ads:adSize="BANNER"
ads:adUnitId="@string/banner_ad_unit_id" >
</com.google.android.gms.ads.AdView>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
</LinearLayout>
You can use rows
and cols
:
cout << "Width : " << src.cols << endl;
cout << "Height: " << src.rows << endl;
or size()
:
cout << "Width : " << src.size().width << endl;
cout << "Height: " << src.size().height << endl;
If you really want to use the DEGREE CELSIUS character “?”, then copy and paste is OK, provided that your document is UTF-8 encoded and declared as such in HTTP headers. Using the character reference ℃
would work equally well, and would work independently of character encoding, but the source would be much less readable.
The problem with Blackberry is most probably a font issue. I don’t know about fonts on Blackberry, but the font repertoire might be limited. There’s nothing you can do about this in HTML, but you can use CSS, possibly with @font face
.
But there is seldom any reason to use the DEGREE CELSIUS. It is a compatibility character, included in Unicode due to its use in East Asian writing. The Unicode Standard explicitly says in Chapter 15 (section 15.2, page 497):
“In normal use, it is better to represent degrees Celsius “°C” with a sequence of U+00B0 degree sign + U+0043 latin capital letter c, rather than U+2103 degree celsius.”
The degree sign “°” can be entered in many ways, including the entity reference `°, but normally it is best to insert it as a character, via copy and paste or otherwise. On Windows, you can use Alt 0176.
Caveat: Some browsers may treat the degree sign as allowing a line break after it even when no space intervenes, putting “°” and the following “C” on separate lines. There are different ways to prevent this. A simple and effective method is this: <nobr>42 °C</nobr>
.
For linux users, and to sum up and add to what others have said here, you should know the following:
$CLASSPATH is what Java uses to look through multiple directories to find all the different classes it needs for your script (unless you explicitly tell it otherwise with the -cp override). Using -cp requires that you keep track of all the directories manually and copy-paste that line every time you run the program (not preferable IMO).
The colon (":") character separates the different directories. There is only one $CLASSPATH and it has all the directories in it. So, when you run "export CLASSPATH=...." you want to include the current value "$CLASSPATH" in order to append to it. For example:
export CLASSPATH=.
export CLASSPATH=$CLASSPATH:/usr/share/java/mysql-connector-java-5.1.12.jar
In the first line above, you start CLASSPATH out with just a simple 'dot' which is the path to your current working directory. With that, whenever you run java it will look in the current working directory (the one you're in) for classes. In the second line above, $CLASSPATH grabs the value that you previously entered (.) and appends the path to a mysql dirver. Now, java will look for the driver AND for your classes.
echo $CLASSPATH
is super handy, and what it returns should read like a colon-separated list of all the directories, and .jar files, you want java looking in for the classes it needs.
Tomcat does not use CLASSPATH. Read what to do about that here: https://tomcat.apache.org/tomcat-8.0-doc/class-loader-howto.html
I deleted the project without removing content. I then created a new Java project from an existing resource. Pointing at my SVN checkout root folder. This worked for me. Although, Chris' way would have been much quicker. That's good to note for future. Thanks!
Refreshing current webview's URL is not a common usage.
I used this in such a scenario: When user goes to another activity and user come back to webview's activity I reload current URL like this:
public class MyWebviewActivity extends Activity {
WebView mWebView;
....
....
....
@Override
public void onRestart() {
String url = mWebView.getUrl();
String postData = MyUtility.getOptionsDataForPOSTURL(mContext);
mWebView.postUrl(url, EncodingUtils.getBytes(postData, "BASE64"));
}
}
You can also use WebView's reload()
function. But note that if you loaded the webview with postUrl()
, then mWebView.reload();
doesn't work. This also works
String webUrl = webView.getUrl();
mWebView.loadUrl(webUrl);
def split_and_save_df(df, name, size, output_dir):
"""
Split a df and save each chunk in a different csv file.
Parameters:
df : pandas df to be splitted
name : name to give to the output file
size : chunk size
output_dir : directory where to write the divided df
"""
import os
for i in range(0, df.shape[0],size):
start = i
end = min(i+size-1, df.shape[0])
subset = df.loc[start:end]
output_path = os.path.join(output_dir,f"{name}_{start}_{end}.csv")
print(f"Going to write into {output_path}")
subset.to_csv(output_path)
output_size = os.stat(output_path).st_size
print(f"Wrote {output_size} bytes")
I continued to have this problem in ie7 when the browser was at certain widths. Turns out older browsers round the pixel value up if the percentage result isn't a whole number. To solve this you can try setting
overflow: hidden;
on the last element (or all of them).
You can increase client_max_body_size and upload_max_filesize + post_max_size all day long. Without adjusting HTTP timeout it will never work.
//You need to adjust this, and probably on PHP side also. client_body_timeout 2min // 1GB fileupload
I think I've accidentally found a solution. The only thing to do is inserting an empty <span class="input-group-addon"></span>
between the <input>
and the <select>
.
Additionally you can make it "invisible" by reducing its width, horizontal padding and borders:
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
_x000D_
<div class="input-group">_x000D_
<span class="input-group-addon" title="* Price" id="priceLabel">Price</span>_x000D_
<input type="number" id="searchbygenerals_priceFrom" name="searchbygenerals[priceFrom]" required="required" class="form-control" value="0">_x000D_
<span class="input-group-addon">-</span>_x000D_
<input type="number" id="searchbygenerals_priceTo" name="searchbygenerals[priceTo]" required="required" class="form-control" value="0">_x000D_
_x000D_
<!-- insert this line -->_x000D_
<span class="input-group-addon" style="width:0px; padding-left:0px; padding-right:0px; border:none;"></span>_x000D_
_x000D_
<select id="searchbygenerals_currency" name="searchbygenerals[currency]" class="form-control">_x000D_
<option value="1">HUF</option>_x000D_
<option value="2">EUR</option>_x000D_
</select>_x000D_
</div>
_x000D_
Tested on Chrome and FireFox.
You can simply set the window state
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
You could use string.Join
:
List<string> list = new List<string>()
{
"Red",
"Blue",
"Green"
};
string output = string.Join(Environment.NewLine, list.ToArray());
Console.Write(output);
The result would be:
Red
Blue
Green
As an alternative to Environment.NewLine
, you can replace it with a string based line-separator of your choosing.
You can write this in a more compact way:
var now = new Date();
now.setTime(now.getTime() + 1 * 3600 * 1000);
document.cookie = "name=value; expires=" + now.toUTCString() + "; path=/";
And for someone like me, who wasted an hour trying to figure out why the cookie with expiration is not set up (but without expiration can be set up) in Chrome, here is in answer:
For some strange reason Chrome team decided to ignore cookies from local pages. So if you do this on localhost, you will not be able to see your cookie in Chrome. So either upload it on the server or use another browser.
A formula for an angle from 0 to 2pi.
There is x=x2-x1 and y=y2-y1.The formula is working for
any value of x and y. For x=y=0 the result is undefined.
f(x,y)=pi()-pi()/2*(1+sign(x))*(1-sign(y^2))
-pi()/4*(2+sign(x))*sign(y)
-sign(x*y)*atan((abs(x)-abs(y))/(abs(x)+abs(y)))
You're effectively scanning the list once to find the min value, then scanning it again to find the index, you can do both in one go:
from operator import itemgetter
min(enumerate(a), key=itemgetter(1))[0]
Module
s are VB counterparts to C# static
classes. When your class is designed solely for helper functions and extension methods and you don't want to allow inheritance and instantiation, you use a Module
.
By the way, using Module
is not really subjective and it's not deprecated. Indeed you must use a Module
when it's appropriate. .NET Framework itself does it many times (System.Linq.Enumerable
, for instance). To declare an extension method, it's required to use Module
s.
You can use both PHP and javascript. Perform your php codes in the backend and redirect to a php page. On the php page you redirected to add the code below:
<?php if(condition_to_check_for){ ?>
<script type="text/javascript">
window.open('url_goes_here', '_blank');
</script>
<? } ?>
As shown below, range
only supports integers:
>>> range(15.0)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: range() integer end argument expected, got float.
>>> range(15)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
>>>
However, c/10
is a float because /
always returns a float.
Before you put it in range
, you need to make c/10
an integer. This can be done by putting it in int
:
range(int(c/10))
or by using //
, which returns an integer:
range(c//10)
Yeah.
command >> file
to redirect just stdout of command
.
command >> file 2>&1
to redirect stdout and stderr to the file (works in bash, zsh)
And if you need to use sudo
, remember that just
sudo command >> /file/requiring/sudo/privileges
does not work, as privilege elevation applies to command
but not shell redirection part. However, simply using
tee
solves the problem:
command | sudo tee -a /file/requiring/sudo/privileges
To OP's example:
s = "{'muffin' : 'lolz', 'foo' : 'kitty'}"
We can use Yaml to deal with this kind of non-standard json in string:
>>> import yaml
>>> s = "{'muffin' : 'lolz', 'foo' : 'kitty'}"
>>> s
"{'muffin' : 'lolz', 'foo' : 'kitty'}"
>>> yaml.load(s)
{'muffin': 'lolz', 'foo': 'kitty'}
I pre-allocate a vector with
> (a <- rep(NA, 10))
[1] NA NA NA NA NA NA NA NA NA NA
You can then use [] to insert values into it.
Up through C++03, your first example was valid, but used a deprecated implicit conversion--a string literal should be treated as being of type char const *
, since you can't modify its contents (without causing undefined behavior).
As of C++11, the implicit conversion that had been deprecated was officially removed, so code that depends on it (like your first example) should no longer compile.
You've noted one way to allow the code to compile: although the implicit conversion has been removed, an explicit conversion still works, so you can add a cast. I would not, however, consider this "fixing" the code.
Truly fixing the code requires changing the type of the pointer to the correct type:
char const *p = "abc"; // valid and safe in either C or C++.
As to why it was allowed in C++ (and still is in C): simply because there's a lot of existing code that depends on that implicit conversion, and breaking that code (at least without some official warning) apparently seemed to the standard committees like a bad idea.
These articles seem to suggest that checking for 1.5
or 1.6
prefix should work, as it follows proper version naming convention.
java.version
system property"java.version
system property"Either 1/0 or Y/N with a check constraint on it. ether way is fine. I personally prefer 1/0 as I do alot of work in perl, and it makes it really easy to do perl Boolean operations on database fields.
If you want a really in depth discussion of this question with one of Oracles head honchos, check out what Tom Kyte has to say about this Here
It will order first, then get the first 20. A database will also process anything in the WHERE
clause before ORDER BY
.
Change all "es6" and "es7" to "es" in your polyfills.ts and polyfills.ts (Optional).
import 'core-js/es6/symbol';
import 'core-js/es/symbol';
In Angular
earlier we had .angular-cli.json
file which referred to favicon.ico
. If you'll upgrade into one of the newer versions of Angular
then you'll have angular.json
instead. For these newer versions, you have to refer the favicon path in your index.html
from now onwards.
Even i was facing the same problem ,but solved it by
conda install -c conda-forge pysoundfile
while importing it
import soundfile
you might try this if you logged in with root:
mysqld --user=root
It may be "better" to not use attach
at all. On the plus side, you can save some typing if you use attach
. Let's say your dataset is called mydata
and you have variables called v1
, v2
, and v3
. If you don't attach mydata
, then you will type mean(mydata$v1)
to get the mean of v1
. If you do attach mydata
, then you will type mean(v1)
to get the mean of v1
. But, if you don't detach the mydata
dataset (every time), you'll get the message about the objects being masked going forward.
detach
every time.Don't use attach
. Instead, include the dataset name every time you refer to a variable. The form is mydata$v1
(name of data set, dollar sign, name of variable).
As for me, I used solution 1 a lot in the past, but I've moved to solution 2. It's a bit more typing in the beginning, but if you are going to use the code multiple times, it just seems cleaner.
You do this via attributes on the properties, like this:
[Description("Test text displayed in the textbox"),Category("Data")]
public string Text {
get => myInnerTextBox.Text;
set => myInnerTextBox.Text = value;
}
The category is the heading under which the property will appear in the Visual Studio Properties box. Here's a more complete MSDN reference, including a list of categories.
Put each class into separate files and "require" them.
User.php
<?php
class User {
public $userid;
public $username;
private $password;
public $profile;
public $history;
public function __construct() {
require_once('UserProfile.php');
require_once('UserHistory.php');
$this->profile = new UserProfile();
$this->history = new UserHistory();
}
}
?>
UserProfile.php
<?php
class UserProfile
{
// Some code here
}
?>
UserHistory.php
<?php
class UserHistory
{
// Some code here
}
?>
Unsigned int can be converted to signed (or vice-versa) by simple expression as shown below :
unsigned int z;
int y=5;
z= (unsigned int)y;
Though not targeted to the question, you would like to read following links :
Some modern browsers have support for parsing JSON into a native object:
var var1 = '{"cols": [{"i" ....... 66}]}';
var result = JSON.parse(var1);
For the browsers that don't support it, you can download json2.js from json.org for safe parsing of a JSON object. The script will check for native JSON support and if it doesn't exist, provide the JSON global object instead. If the faster, native object is available it will just exit the script leaving it intact. You must, however, provide valid JSON or it will throw an error — you can check the validity of your JSON with http://jslint.com or http://jsonlint.com.
For those of you using Centos (and perhaps other linux distibutions), you need to make sure that its FW (iptables) allows for port 80 or any other port you want.
See here on how to completely disable it (for testing purposes only!). And here for specific rules
It seems the answers here do not support an enterprise use case where a Nexus server has multiple users and has project-based isolation (protection) based on user id ALONG with using an automated build (CI) system like Jenkins. You would not be able to create a settings.xml file to satisfy the different user ids needed for different projects. I am not sure how to solve this, except by opening Nexus up to anonymous access for reading repositories, unless the projects could store a project-specific generic user id in their pom.xml.
In terminal type :
netstat -anp|grep "port_number"
It will show the port details. Go to last column. It will be in this format . For example :- PID/java
then execute :
kill -9 PID. Worked on Centos5
For MAC:
lsof -n -i :'port-number' | grep LISTEN
Sample Response :
java 4744 (PID) test 364u IP0 asdasdasda 0t0 TCP *:port-number (LISTEN)
and then execute :
kill -9 PID
Worked on Macbook
As Aaron mentioned above, some services do not accept SERVICE_ACCEPT_STOP
messages, by the time it was developed. And that is hard coded into the executable. Period. A workaroud would be not to have it started, and as you cannot change its properties, forcibly do the following:
If you cannot change the entry, right-click on your service name on the left pane, select 'Permissions', check that 'Everyone' has full access and try step 4 again.
Don't forget to disable safe boot from msconfig again, and reboot !
From here:
// when the DOM is ready
$(function () {
var img = new Image();
// wrap our new image in jQuery, then:
$(img)
// once the image has loaded, execute this code
.load(function () {
// set the image hidden by default
$(this).hide();
// with the holding div #loader, apply:
$('#loader')
// remove the loading class (so no background spinner),
.removeClass('loading')
// then insert our image
.append(this);
// fade our image in to create a nice effect
$(this).fadeIn();
})
// if there was an error loading the image, react accordingly
.error(function () {
// notify the user that the image could not be loaded
})
// *finally*, set the src attribute of the new image to our image
.attr('src', 'images/headshot.jpg');
});
Always use the IP that is shown in your Network settings. It changes when you change location and you use another wireless connection.
For example in my case now it is: 10.0.0.5
Here is some example code to help you get started:
package com.acme;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileArrayProvider {
public String[] readLines(String filename) throws IOException {
FileReader fileReader = new FileReader(filename);
BufferedReader bufferedReader = new BufferedReader(fileReader);
List<String> lines = new ArrayList<String>();
String line = null;
while ((line = bufferedReader.readLine()) != null) {
lines.add(line);
}
bufferedReader.close();
return lines.toArray(new String[lines.size()]);
}
}
And an example unit test:
package com.acme;
import java.io.IOException;
import org.junit.Test;
public class FileArrayProviderTest {
@Test
public void testFileArrayProvider() throws IOException {
FileArrayProvider fap = new FileArrayProvider();
String[] lines = fap
.readLines("src/main/java/com/acme/FileArrayProvider.java");
for (String line : lines) {
System.out.println(line);
}
}
}
Hope this helps.
You can install boost on ubuntu by using the following commands:
sudo apt update
sudo apt install libboost-all-dev
For what its worth if you have a more than a handful of projects, which I do, use:
gcloud init
This will list all your projects and give you the option to change current project settings, add a new project configuration or switch:
Pick configuration to use:
[1] Re-initialize this configuration [esqimo-preprod] with new settings
[2] Create a new configuration
[3] Switch to and re-initialize existing configuration: [default]
[4] Switch to and re-initialize existing configuration: [project 1]
[5] Switch to and re-initialize existing configuration: [project 2]
Please enter your numeric choice:
It will always ask you to login and display options for different google accounts that you may have.
Given that I manage multiple organisations and projects this approach lets' me to simply switch between them.
Note: If your app targets API level 26 or higher, the system imposes restrictions on using or creating background services unless the app itself is in the foreground.
If an app needs to create a foreground service, the app should call startForegroundService()
. That method creates a background service, but the method signals to the system that the service will promote itself to the foreground.
Once the service has been created, the service must call its startForeground() method within five seconds.
If there is an interface anywhere in the ThreadProvider hierarchy try putting the name of the Interface as the type of your service provider, eg. if you have say this structure:
public class ThreadProvider implements CustomInterface{
...
}
Then in your controller try this:
@Controller
public class ChiusuraController {
@Autowired
private CustomInterface chiusuraProvider;
}
The reason why this is happening is, in your first case when you DID NOT have ChiusuraProvider
extend ThreadProvider
Spring probably was underlying creating a CGLIB based proxy for you(to handle the @Transaction).
When you DID extend from ThreadProvider
assuming that ThreadProvider extends some interface, Spring in that case creates a Java Dynamic Proxy based Proxy, which would appear to be an implementation of that interface instead of being of ChisuraProvider
type.
If you absolutely need to use ChisuraProvider
you can try AspectJ as an alternative or force CGLIB based proxy in the case with ThreadProvider also this way:
<aop:aspectj-autoproxy proxy-target-class="true"/>
Here is some more reference on this from the Spring Reference site: http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/classic-aop-spring.html#classic-aop-pfb
Swift 4:
Sure, I know that Swift 4 has an extension for NSRange already
public init<R, S>(_ region: R, in target: S) where R : RangeExpression,
S : StringProtocol,
R.Bound == String.Index, S.Index == String.Index
I know in most cases this init is enough. See its usage:
let string = "Many animals here: !!!"
if let range = string.range(of: ""){
print((string as NSString).substring(with: NSRange(range, in: string))) // ""
}
But conversion can be done directly from Range< String.Index > to NSRange without Swift's String instance.
Instead of generic init usage which requires from you the target parameter as String and if you don't have target string at hand you can create conversion directly
extension NSRange {
public init(_ range:Range<String.Index>) {
self.init(location: range.lowerBound.encodedOffset,
length: range.upperBound.encodedOffset -
range.lowerBound.encodedOffset) }
}
or you can create the specialized extension for Range itself
extension Range where Bound == String.Index {
var nsRange:NSRange {
return NSRange(location: self.lowerBound.encodedOffset,
length: self.upperBound.encodedOffset -
self.lowerBound.encodedOffset)
}
}
Usage:
let string = "Many animals here: !!!"
if let range = string.range(of: ""){
print((string as NSString).substring(with: NSRange(range))) // ""
}
or
if let nsrange = string.range(of: "")?.nsRange{
print((string as NSString).substring(with: nsrange)) // ""
}
Swift 5:
Due to the migration of Swift strings to UTF-8 encoding by default, the usage of encodedOffset
is considered as deprecated and Range cannot be converted to NSRange without an instance of String itself, because in order to calculate the offset we need the source string which is encoded in UTF-8 and it should be converted to UTF-16 before calculating offset. So best approach, for now, is to use generic init.
You can use the varStatus
attribute like this:-
<c:forEach var="categoryName" items="${categoriesList}" varStatus="myIndex">
myIndex.index will give you the index. Here myIndex
is a LoopTagStatus object.
Hence, you can send that to your javascript method like this:-
<a onclick="getCategoryIndex(${myIndex.index})" href="#">${categoryName}</a>
Swift 3
I created an outlet for the navigation title bar item that comes with the navigation bar (from the Object Browser) in the storyboard. Then I sued the line below:
navigationBarTitleItem.title = "Hello Bar"
mysqli is provided by php-mysql-5.3.3-40.el6_6.x86_64
You may need to try the following
yum install php-mysql-5.3.3-40.el6_6.x86_64
Point A: Don't use list as a variable name Point B: You don't need the [0] just
print(list[x])
The solution, as pointed out by other answers, is to use
angular.element(element).trigger(event);
Here's an example of how I randomly select multiple select
elements:
$scope.randomize = function(){
var games = [].slice.call(document.querySelectorAll('.games select'));
games.forEach(function(e){
// Logically change the element (Angular won't know about this)
e.selectedIndex = parseInt(Math.random() * 100, 10) < 50 ? 1 : 2;
// Manually tell Angular that the DOM has changed
angular.element(e).trigger('change');
});
};
import os.path
dirname = os.path.dirname(__file__) or '.'
Set following php parameters to same value in seconds:
session.cookie_lifetime
session.gc_maxlifetime
in php.ini, .htaccess or for example with
ini_set('session.cookie_lifetime', 86400);
ini_set('session.gc_maxlifetime', 86400);
for a day.
Links:
You may require to install Language Packs: 3.2
hsThumbList.setLayoutParams(new LayoutParams(100, 400));
This is not a very nice fix but it works:
CSS:
.new-tab-opener
{
display: none;
}
HTML:
<a data-href="http://www.google.com/" href="javascript:">Click here</a>
<form class="new-tab-opener" method="get" target="_blank"></form>
Javascript:
$('a').on('click', function (e) {
var f = $('.new-tab-opener');
f.attr('action', $(this).attr('data-href'));
f.submit();
});
Live example: http://jsfiddle.net/7eRLb/
You need to replace open
with urllib.urlopen or urllib2.urlopen.
e.g.
import csv
import urllib2
url = 'http://winterolympicsmedals.com/medals.csv'
response = urllib2.urlopen(url)
cr = csv.reader(response)
for row in cr:
print row
This would output the following
Year,City,Sport,Discipline,NOC,Event,Event gender,Medal
1924,Chamonix,Skating,Figure skating,AUT,individual,M,Silver
1924,Chamonix,Skating,Figure skating,AUT,individual,W,Gold
...
The original question is tagged "python-2.x", but for a Python 3 implementation (which requires only minor changes) see below.
I use the below approach.
reg = linear_model.LinearRegression()
reg.fit(df[['year']],df.income)
reg.predict([[2136]])
You are checking it the array index contains a string "undefined"
, you should either use the typeof
operator:
typeof predQuery[preId] == 'undefined'
Or use the undefined
global property:
predQuery[preId] === undefined
The first way is safer, because the undefined
global property is writable, and it can be changed to any other value.
you can use this one.
<div id="test"></div>
you java script code should be like that.
setInterval(function(){
$('#test').load('test.php');
},5000);
In dynamic languages, when the interpreter import
s, it simply reads a file and evaluates it.
In C, external libraries are located by the linker at compile time to build the final object if the library is statically compiled, while for dynamic libraries a smaller version of the linker is called at runtime which remaps addresses and so makes code in the library available to the executable.
In Java, import
is simply used by the compiler to let you name your classes by their unqualified name, let's say String
instead of java.lang.String
. You don't really need to import java.lang.*
because the compiler does it by default. However this mechanism is just to save you some typing. Types in Java are fully qualified class names, so a String
is really a java.lang.String
object when the code is run. Packages are intended to prevent name clashes and allow two classes to have the same simple name, instead of relying on the old C convention of prefixing types like this. java_lang_String
. This is called namespacing.
BTW, in Java there's the static import construct, which allows to further save typing if you use lots of constants from a certain class. In a compilation unit (a .java file) which declares
import static java.lang.Math.*;
you can use the constant PI
in your code, instead of referencing it through Math.PI
, and the method cos()
instead of Math.cos()
. So for example you can write
double r = cos(PI * theta);
Once you understand that classes are always referenced by their fully qualified name in the final bytecode, you must understand how the class code is actually loaded. This happens the first time an object of that class is created, or the first time a static member of the class is accessed. At this time, the ClassLoader
tries to locate the class and instantiate it. If it can't find the class a NoClassDefFoundError
is thrown (or a a ClassNotFoundException
if the class is searched programmatically). To locate the class, the ClassLoader
usually checks the paths listed in the $CLASSPATH
environment variable.
To solve your problem, it seems you need an applet
element like this
<applet
codebase = "http://san.redenetimoveis.com"
archive="test.jar, core.jar"
code="com.colorfulwolf.webcamapplet.WebcamApplet"
width="550" height="550" >
BTW, you don't need to import the archives in the standard JRE.
Clickatell is a popular SMS gateway. It works in 200+ countries.
Their API offers a choice of connection options via: HTTP/S, SMPP, SMTP, FTP, XML, SOAP. Any of these options can be used from php.
The HTTP/S method is as simple as this:
http://api.clickatell.com/http/sendmsg?to=NUMBER&msg=Message+Body+Here
The SMTP method consists of sending a plain-text e-mail to: [email protected]
, with the following body:
user: xxxxx
password: xxxxx
api_id: xxxxx
to: 448311234567
text: Meet me at home
You can also test the gateway (incoming and outgoing) for free from your browser
You can directly run the following command on terminal of your remote server to run tensorboard:
tensorboard --logdir {tf_log directory path} --host "0.0.0.0" --port 6006
Or you can also start the tensorboard within your ipython notebook:
%load_ext tensorboard
%tensorboard --logdir {tf_log directory path} --host "0.0.0.0" --port 6006
This is no easy feat.
The following link is to a working demo:
Link Updated according to lanoxx's comment
http://jsfiddle.net/C8Dtf/366/
Just remember to add these:
<script type="text/javascript" charset="utf-8" src="http://datatables.net/release-datatables/media/js/jquery.js"></script>
<script type="text/javascript" charset="utf-8" src="http://datatables.net/release-datatables/media/js/jquery.dataTables.js"></script>
<script type="text/javascript" charset="utf-8" src="http://datatables.net/release-datatables/extras/FixedColumns/media/js/FixedColumns.js"></script>
i don't see any other way of achieving this. Especially not by using css only.
This is a lot to go through. Hope this helps :)
JavaScript that allows for syntax checking
JSHint-Eclipse
and autosuggestions for .js files in Eclipse?
http://www.nodeclipse.org/updates/anide/
As Nodeclipse lead, I am always looking for what is available in Eclipse ecosystem. Nodeclipse site has even more links, and I am inviting to collaborate on the JavaScript tools on GitHub
The below code solved my problem :
request.ProtocolVersion = HttpVersion.Version10; // THIS DOES THE TRICK
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
This worked for me!
$("#target").prop("selectedIndex", 0);
"12345".each_char.map(&:to_i)
each_char
does basically the same as split('')
: It splits a string into an array of its characters.
hmmm, I just realize now that in the original question the string contains commas, so my answer is not really helpful ;-(..
Perhaps not in the context that you have it, but you could use
SELECT DISTINCT col1,
PERCENTILE_CONT(col2) WITHIN GROUP (ORDER BY col2) OVER (PARTITION BY col1),
PERCENTILE_CONT(col2) WITHIN GROUP (ORDER BY col2) OVER (PARTITION BY col1, col3),
FROM TableA
You would use this to return different levels of aggregation returned in a single row. The use case would be for when a single grouping would not suffice all of the aggregates needed.
I think you've missed the point of access control.
A quick recap on why CORS exists: Since JS code from a website can execute XHR, that site could potentially send requests to other sites, masquerading as you and exploiting the trust those sites have in you(e.g. if you have logged in, a malicious site could attempt to extract information or execute actions you never wanted) - this is called a CSRF attack. To prevent that, web browsers have very stringent limitations on what XHR you can send - you are generally limited to just your domain, and so on.
Now, sometimes it's useful for a site to allow other sites to contact it - sites that provide APIs or services, like the one you're trying to access, would be prime candidates. CORS was developed to allow site A(e.g. paste.ee
) to say "I trust site B, so you can send XHR from it to me". This is specified by site A sending "Access-Control-Allow-Origin" headers in its responses.
In your specific case, it seems that paste.ee
doesn't bother to use CORS. Your best bet is to contact the site owner and find out why, if you want to use paste.ee with a browser script. Alternatively, you could try using an extension(those should have higher XHR privileges).
First check your listener is on or off. Go to net manager then Local -> service naming -> orcl. Then change your HOST NAME and put your PC name. Now go to LISTENER and change the HOST and put your PC name.
Even though the above solutions do work,This answer is for you in case you want to reverse the clock instead of undoing a git pull.I mean if you want to get your exact repo the way it was X
Mins back then run the command
git reset --hard branchName@{"X Minutes ago"}
Note: before you actually go ahead and run this command please only try this command if you are sure about the time you want to go back to and heres about my situation.
I was currently on a branch develop
, I was supposed to checkout to a new branch and pull in another branch lets say Branch A
but I accidentally ran
git pull origin B
before checking out.
so to undo this change I tried this command
git reset --hard develop@{"10 Minutes ago"}
if you are on windows cmd and get error: unknown switch `e
try adding quotes like this
git reset --hard 'develop@{"10 Minutes ago"}'
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<head>
<title>Context menu - LabLogic.net</title>
</head>
<body>
<script language="javascript" type="text/javascript">
document.oncontextmenu=RightMouseDown;
document.onmousedown = mouseDown;
function mouseDown(e) {
if (e.which==3) {//righClick
alert("Right-click menu goes here");
}
}
function RightMouseDown() { return false; }
</script>
</body>
</html>
Tested and works in Opera 11.6, firefox 9.01, Internet Explorer 9 and chrome 17 You can check out a working sample at javascript right click menu
document.getElementById("textareaID").value
$("#textareaID").val()
Cannot do the other way round (it's always good to know what you're doing)
document.getElementById("textareaID").value() // --> TypeError: Property 'value' of object #<HTMLTextAreaElement> is not a function
jQuery:
$("#textareaID").value // --> undefined
When you run a program as a background process (by adding an &
after it), e.g.:
python -m SimpleHTTPServer 8888 &
If the terminal window is still open you can do:
jobs
To get a list of all background jobs within the running shell's process.
It could look like this:
$ jobs
[1]+ Running python -m SimpleHTTPServer 8888 &
To kill a job, you can either do kill %1
to kill job "[1]", or do fg %1
to put the job in the foreground (fg) and then use ctrl-c to kill it. (Simply entering fg
will put the last backgrounded process in the foreground).
With respect to SimpleHTTPServer it seems kill %1
is better than fg
+ ctrl-c. At least it doesn't protest with the kill command.
The above has been tested in Mac OS, but as far as I can remember it works just the same in Linux.
Update: For this to work, the web server must be started directly from the command line (verbatim the first code snippet). Using a script to start it will put the process out of reach of jobs
.
Your indentation is goofed, and you've mixed tabs and spaces. Run the script with python -tt
to verify.
The X-Frame-Options header is a security feature enforced at the browser level.
If you have control over your user base (IT dept for corp app), you could try something like a greasemonkey script (if you can a) deploy greasemonkey across everyone and b) deploy your script in a shared way)...
Alternatively, you can proxy their result. Create an endpoint on your server, and have that endpoint open a connection to the target endpoint, and simply funnel traffic backwards.
Well, you're going to want document.location
. Do some sort of string manipulation on it (unless jQuery has a way to avoid that work for you) and then
$(body).addClass(foo);
I know this isn't the complete answer, but I assume you can work the rest out :)
\d
matches any single digit in most regex grammar styles, including python.
Regex Reference
I had the same problem, and I solved it by adding the following code to the top of the python file:
import sys
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
Number of repetitions of os.path.dirname
depends on where is the file located your project hierarchy. For instance, in my case the project root is three levels up.
You can simply check out a new branch, and then commit:
git checkout -b my_new_branch
git commit
Checking out the new branch will not discard your changes.
I would like to add a minor comment on Blender solution.
You can do the following:
var link = 'http://example.com?candy_name=' + encodeURIComponent('M&M');
That outputs:
http://example.com?candy_name=M%26M
The great thing about this it does not only work for & but for any especial character.
For instance:
var link = 'http://example.com?candy_name=' + encodeURIComponent('M&M?><')
Outputs:
"http://example.com?candy_name=M%26M%3F%3E%3C"
I Want See This
Example http://jsfiddle.net/35vAN/
<html>
<head>
<script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.1.min.js" > </script>
<script type="text/javascript">
function PrintElem(elem)
{
Popup($(elem).html());
}
function Popup(data)
{
var mywindow = window.open('', 'my div', 'height=400,width=600');
mywindow.document.write('<html><head><title>my div</title>');
/*optional stylesheet*/ //mywindow.document.write('<link rel="stylesheet" href="main.css" type="text/css" />');
mywindow.document.write('</head><body >');
mywindow.document.write(data);
mywindow.document.write('</body></html>');
mywindow.print();
mywindow.close();
return true;
}
</script>
</head>
<body>
<div id="mydiv">
This will be printed. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque a quam at nibh adipiscing interdum. Nulla vitae accumsan ante.
</div>
<div>
This will not be printed.
</div>
<div id="anotherdiv">
Nor will this.
</div>
<input type="button" value="Print Div" onclick="PrintElem('#mydiv')" />
</body>
</html>
Just to extend on the previous answer, if you are linking two requests together and want to send the cookies returned from the first one to the second one (for example, maintaining a session alive across requests) you can do:
import requests
r1 = requests.post('http://www.yourapp.com/login')
r2 = requests.post('http://www.yourapp.com/somepage',cookies=r1.cookies)
Long
is the Object
form of long
, and Integer
is the object form of int
.
The long
uses 64 bits. The int
uses 32 bits, and so can only hold numbers up to ±2 billion (-231 to +231-1).
You should use long
and int
, except where you need to make use of methods inherited from Object
, such as hashcode
. Java.util.collections
methods usually use the boxed (Object
-wrapped) versions, because they need to work for any Object
, and a primitive type, like int
or long
, is not an Object
.
Another difference is that long
and int
are pass-by-value, whereas Long
and Integer
are pass-by-reference value, like all non-primitive Java types. So if it were possible to modify a Long
or Integer
(it's not, they're immutable without using JNI code), there would be another reason to use one over the other.
A final difference is that a Long
or Integer
could be null
.
You can apply a theme to any activity by including android:theme
inside <activity>
inside manifest file.
For example:
<activity android:theme="@android:style/Theme.Dialog">
<activity android:theme="@style/CustomTheme">
And if you want to set theme programatically then use setTheme()
before calling setContentView()
and super.onCreate()
method inside onCreate()
method.
.help will show you all the options. Do .exit in this case
var objResponse1 =
JsonConvert.DeserializeObject<List<RetrieveMultipleResponse>>(JsonStr);
worked!
First your code is not compiled. Line Long b = 1113;
is wrong. You have to say
Long b = 1113L;
Second when I fixed this compilation problem the code printed "not equals".
If you're using Java configs instead of XML configs, put this in your WebSecurityConfigurerAdapter.configure(HttpSecurity http)
method:
http.headers().frameOptions().disable();
I'm using rather specified charset (ISO-8859-2) because not every mail system (for example: http://10minutemail.com) can read UTF-8 mails. If you need this:
function utf8_to_latin2($str)
{
return iconv ( 'utf-8', 'ISO-8859-2' , $str );
}
function my_mail($to,$s,$text,$form, $reply)
{
mail($to,utf8_to_latin2($s),utf8_to_latin2($text),
"From: $form\r\n".
"Reply-To: $reply\r\n".
"X-Mailer: PHP/" . phpversion());
}
I have made another mailer function, because apple device could not read well the previous version.
function utf8mail($to,$s,$body,$from_name="x",$from_a = "[email protected]", $reply="[email protected]")
{
$s= "=?utf-8?b?".base64_encode($s)."?=";
$headers = "MIME-Version: 1.0\r\n";
$headers.= "From: =?utf-8?b?".base64_encode($from_name)."?= <".$from_a.">\r\n";
$headers.= "Content-Type: text/plain;charset=utf-8\r\n";
$headers.= "Reply-To: $reply\r\n";
$headers.= "X-Mailer: PHP/" . phpversion();
mail($to, $s, $body, $headers);
}
table.DefaultView.Sort = "[occr] DESC";
The behavior is undefined from the language point of view. Consider that different platforms can have different constraints in memory alignment and endianness. The code in a big endian versus a little endian machine will update the values in the struct differently. Fixing the behavior in the language would require all implementations to use the same endianness (and memory alignment constraints...) limiting use.
If you are using C++ (you are using two tags) and you really care about portability, then you can just use the struct and provide a setter that takes the uint32_t
and sets the fields appropriately through bitmask operations. The same can be done in C with a function.
Edit: I was expecting AProgrammer to write down an answer to vote and close this one. As some comments have pointed out, endianness is dealt in other parts of the standard by letting each implementation decide what to do, and alignment and padding can also be handled differently. Now, the strict aliasing rules that AProgrammer implicitly refers to are a important point here. The compiler is allowed to make assumptions on the modification (or lack of modification) of variables. In the case of the union, the compiler could reorder instructions and move the read of each color component over the write to the colour variable.
You can set application.properties
:
spring.jackson.default-property-inclusion=non_null
or application.yaml
:
spring:
jackson:
default-property-inclusion: non_null
http://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
You can try using constructor.name
.
[].constructor.name
new RegExp().constructor.name
As with everything JavaScript, someone will eventually invariably point that this is somehow evil, so here is a link to an answer that covers this pretty well.
An alternative is to use Object.prototype.toString.call
Object.prototype.toString.call([])
Object.prototype.toString.call(/./)
If you're looking for the long way, just create your one method:
static int convertToInt(string a)
{
int x = 0;
Char[] charArray = a.ToCharArray();
int j = charArray.Length;
for (int i = 0; i < charArray.Length; i++)
{
j--;
int s = (int)Math.Pow(10, j);
x += ((int)Char.GetNumericValue(charArray[i]) * s);
}
return x;
}
Close/dispose your WebResponse object.
You have to stop/delete all unnecessary containers created on that images first.
Have a look: How to remove old Docker containers.
After that use @marcell solution.
PATRICIA - Practical Algorithm to Retrieve Information Coded in Alphanumeric, D.R.Morrison (1968).
A PATRICIA tree is related to a Trie. The problem with Tries is that when the set of keys is sparse, i.e. when the actual keys form a small subset of the set of potential keys, as is very often the case, many (most) of the internal nodes in the Trie have only one descendant. This causes the Trie to have a high space-complexity.
http://www.csse.monash.edu.au/~lloyd/tildeAlgDS/Tree/PATRICIA/
Yeah I think the best way to transparent the background colour (make opacity only for the background) is using
.style{
background-color: rgba(100, 100, 100, 0.5);
}
Above statement 0.5 is the opacity value.
It only apply the opacity changes to the background colour (not all elements')
The "opacity" attribute in the CSS will transparent all the elements in the block.
The error message is quite clear: you have a configuration element in a web.config file in a subfolder of your web app that is not allowed at that level - OR you forgot to configure your web application as IIS application.
Example: you try to override application level settings like forms authentication parameters in a web.config in a subfolder of your application
to add to John's answer:
what you want to pass to the shuffle
function is a deck of cards from the class deckOfCards
that you've declared in main; however, the deck of cards or vector<Card> deck
that you've declared in your class is private, so not accessible from outside the class. this means you'd want a getter function, something like this:
class deckOfCards
{
private:
vector<Card> deck;
public:
deckOfCards();
static int count;
static int next;
void shuffle(vector<Card>& deck);
Card dealCard();
bool moreCards();
vector<Card>& getDeck() { //GETTER
return deck;
}
};
this will in turn allow you to call your shuffle function from main like this:
deckOfCards cardDeck; // create DeckOfCards object
cardDeck.shuffle(cardDeck.getDeck()); // shuffle the cards in the deck
however, you have more problems, specifically when calling cout
. first, you're calling the dealCard
function wrongly; as dealCard
is a memeber function of a class, you should be calling it like this cardDeck.dealCard();
instead of this dealCard(cardDeck);
.
now, we come to your second problem - print to standard output. you're trying to print your deal card, which is an object of type Card
by using the following instruction:
cout << cardDeck.dealCard();// deal the cards in the deck
yet, the cout
doesn't know how to print it, as it's not a standard type. this means you should overload your <<
operator to print whatever you want it to print when calling with a Card
type.
Simple and fast solution with mmap:
import mmap
import os
def tail(filename, n):
"""Returns last n lines from the filename. No exception handling"""
size = os.path.getsize(filename)
with open(filename, "rb") as f:
# for Windows the mmap parameters are different
fm = mmap.mmap(f.fileno(), 0, mmap.MAP_SHARED, mmap.PROT_READ)
try:
for i in xrange(size - 1, -1, -1):
if fm[i] == '\n':
n -= 1
if n == -1:
break
return fm[i + 1 if i else 0:].splitlines()
finally:
fm.close()
Meteor is a framework built ontop of node.js. It uses node.js to deploy but has several differences.
The key being it uses its own packaging system instead of node's module based system. It makes it easy to make web applications using Node. Node can be used for a variety of things and on its own is terrible at serving up dynamic web content. Meteor's libraries make all of this easy.
If you are ever wondering how to read a file from server this code might be helpful.
Restrictions :
<Head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script lang="javascript" src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.12.4/xlsx.core.min.js"></script>
</head>
<body>
<script>
/* set up XMLHttpRequest */
// replace it with your file path in local server
var url = "http://localhost/test.xlsx";
var oReq = new XMLHttpRequest();
oReq.open("GET", url, true);
oReq.responseType = "arraybuffer";
oReq.onload = function(e) {
var arraybuffer = oReq.response;
/* convert data to binary string */
var data = new Uint8Array(arraybuffer);
var arr = new Array();
for (var i = 0; i != data.length; ++i) {
arr[i] = String.fromCharCode(data[i]);
}
var bstr = arr.join("");
var cfb = XLSX.read(bstr, { type: 'binary' });
cfb.SheetNames.forEach(function(sheetName, index) {
// Obtain The Current Row As CSV
var fieldsObjs = XLS.utils.sheet_to_json(cfb.Sheets[sheetName]);
fieldsObjs.map(function(field) {
$("#my_file_output").append('<input type="checkbox" value="' + field.Fields + '">' + field.Fields + '<br>');
});
});
}
oReq.send();
</script>
</body>
<div id="my_file_output">
</div>
</html>
Java 8 streams
String body = request.getReader().lines()
.reduce("", (accumulator, actual) -> accumulator + actual);
$_SESSION is your friend if you don't want to mess with Javascript
Let's say you're trying to pass an email:
On page A:
// Start the session
session_start();
// Set session variables
$_SESSION["email"] = "[email protected]";
header('Location: page_b.php');
And on Page B:
// Start the session
session_start();
// Show me the session!
echo "<pre>";
print_r($_SESSION);
echo "</pre>";
To destroy the session
unset($_SESSION['email']);
session_destroy();
In your Safari menu bar click Safari > Preferences & then select the Advanced tab.
Select: "Show Develop menu in menu bar"
Now you can click Develop in your menu bar and choose Show Web Inspector
You can also right-click and press "Inspect element".
In my case I was trying to create a table from one database to another on MS SQL Server 2012. Right-clicking on a table and selecting Script Table as > DROP And CREATE To > New Query Editor Window, following script was created:
USE [SAMPLECOMPANY]
GO
ALTER TABLE [dbo].[Employees] DROP CONSTRAINT [FK_Employees_Departments]
GO
/****** Object: Table [dbo].[Employees] Script Date: 8/24/2016 9:31:15 PM ******/
DROP TABLE [dbo].[Employees]
GO
/****** Object: Table [dbo].[Employees] Script Date: 8/24/2016 9:31:15 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[Employees](
[EmployeeId] [int] IDENTITY(1,1) NOT NULL,
[DepartmentId] [int] NOT NULL,
[FullName] [varchar](50) NOT NULL,
[HireDate] [datetime] NULL
CONSTRAINT [PK_Employees] PRIMARY KEY CLUSTERED
(
[EmployeeId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[Employees] WITH CHECK ADD CONSTRAINT [FK_Employees_Departments] FOREIGN KEY([DepartmentId])
REFERENCES [dbo].[Departments] ([DepartmentID])
GO
ALTER TABLE [dbo].[Employees] CHECK CONSTRAINT [FK_Employees_Departments]
GO
However when executing above script it was returning the error:
SELECT failed because the following SET options have incorrect settings: 'ANSI_PADDING'. Verify that SET options are correct for use with indexed views and/or indexes on computed columns and/or filtered indexes and/or query notifications and/or XML data type methods and/or spatial index operations.
The Solution I've found: Enabling the settings on the Top of the script like this:
USE [SAMPLECOMPANY]
GO
/****** Object: Table [dbo].[Employees] Script Date: 8/24/2016 9:31:15 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
ALTER TABLE [dbo].[Employees] DROP CONSTRAINT [FK_Employees_Departments]
GO
/****** Object: Table [dbo].[Employees] Script Date: 8/24/2016 9:31:15 PM ******/
DROP TABLE [dbo].[Employees]
GO
CREATE TABLE [dbo].[Employees](
[EmployeeId] [int] IDENTITY(1,1) NOT NULL,
[DepartmentId] [int] NOT NULL,
[FullName] [varchar](50) NOT NULL,
[HireDate] [datetime] NULL
CONSTRAINT [PK_Employees] PRIMARY KEY CLUSTERED
(
[EmployeeId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Employees] WITH CHECK ADD CONSTRAINT [FK_Employees_Departments] FOREIGN KEY([DepartmentId])
REFERENCES [dbo].[Departments] ([DepartmentID])
GO
ALTER TABLE [dbo].[Employees] CHECK CONSTRAINT [FK_Employees_Departments]
GO
SET ANSI_PADDING OFF
GO
Hope this help.
You can use simple form:
@using(Html.BeginForm("Update", "Shopping"))
{
<input type="text" id="ss" name="qty" value="@item.Quantity"/>
...
<input type="submit" value="Update" />
}
And add here attribute:
[HttpPost]
public ActionResult Update(string id, string productid, int qty, decimal unitrate)
https://www.chrisumbel.com/article/windows_services_in_python
Follow up the PySvc.py
changing the dll folder
I know this is old but I was stuck on this forever. For me, this specific problem was solved by copying this file - pywintypes36.dll
From -> Python36\Lib\site-packages\pywin32_system32
To -> Python36\Lib\site-packages\win32
setx /M PATH "%PATH%;C:\Users\user\AppData\Local\Programs\Python\Python38-32;C:\Users\user\AppData\Local\Programs\Python\Python38-32\Scripts;C:\Users\user\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\pywin32_system32;C:\Users\user\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\win32
cd C:\Users\user\AppData\Local\Programs\Python\Python38-32
NET START PySvc
NET STOP PySvc
Use the find command.
Assuming you're using Bash 4.2+, use -printf '%T+ %p\n'
for file timestamp value.
find $DIR -type f -printf '%T+ %p\n' | sort -r | head -n 1 | cut -d' ' -f2
Example:
find ~/Downloads -type f -printf '%T+ %p\n' | sort -r | head -n 1 | cut -d' ' -f2
For a more useful script, see the find-latest script here: https://github.com/l3x/helpers
Finally, I've a solution to my uploading problem.
In JavaScript:
var xhr = new XMLHttpRequest();
xhr.open("post", 'uploader.php', true);
xhr.setRequestHeader("pragma", "no-cache");
In PHP:
header('cache-control: no-cache');
You can use the os Module:
var os = require("os");
os.hostname();
See http://nodejs.org/docs/latest/api/os.html#os_os_hostname
Caveats:
if you can work with the IP address -- Machines may have several Network Cards and unless you specify it node will listen on all of them, so you don't know on which NIC the request came in, before it comes in.
Hostname is a DNS matter -- Don't forget that several DNS aliases can point to the same machine.
You might consider using Font Awesome instead of using the unicode or other icons
The code can be as simple as (a) including font-awesome e.g. <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
(b) making a button such as <button><i class="fa fa-arrow-down"></i></button>
Actually Boost does have such adaptor: boost::adaptors::reverse
.
#include <list>
#include <iostream>
#include <boost/range/adaptor/reversed.hpp>
int main()
{
std::list<int> x { 2, 3, 5, 7, 11, 13, 17, 19 };
for (auto i : boost::adaptors::reverse(x))
std::cout << i << '\n';
for (auto i : x)
std::cout << i << '\n';
}
Instant.now()
The java.util.Date class has been outmoded by the new java.time package (Tutorial) in Java 8 and later. The old java.util.Date/.Calendar classes are notoriously troublesome, confusing, and flawed. Avoid them.
ZonedDateTime
Get the current moment in java.time.
ZonedDateTime now = ZonedDateTime.now();
A ZonedDateTime
encapsulates:
If no time zone is specified, your JVM’s current default time zone is assigned silently. Better to specify your desired/expected time zone than rely implicitly on default.
ZoneId z = ZoneId.of( "Pacific/Auckland" );
ZonedDateTime zdt = ZonedDateTime.now( z );
Generally better to get in the habit of doing your back-end work (business logic, database, storage, data exchange) all in UTC time zone. The code above relies implicitly on the JVM’s current default time zone.
The Instant
class represents a moment in the timeline in UTC with a resolution of nanoseconds.
Instant instant = Instant.now();
The Instant
class is a basic building-block class in java.time and may be used often in your code.
When you need more flexibility in formatting, transform into an OffsetDateTime
. Specify a ZoneOffset
object. For UTC use the handy constant for UTC.
OffsetDateTime odt = instant.atOffset( ZoneOffset.UTC );
You easily adjust to another time zone for presentation to the user. Use a proper time zone name, never the 3-4 letter codes such as EST
or IST
.
ZoneId z = ZoneId.of( "America/Montreal" );
ZonedDateTime nowMontreal = instant.atZone( z );
Generate a String representation of that date-time value, localized.
String output = DateTimeFormatter
.ofLocalizedDate( FormatStyle.FULL )
.withLocale( Locale.CANADA_FRENCH )
.format ( nowMontreal );
Instant
Or, to stay in UTC, use Instant
. An Instant
object represents a moment on the timeline, to nanosecond resolution, always in UTC. This provides the building block for a zoned date-time, along with a time zone assignment. You can think of it conceptually this way:
You can extract an Instant
from a ZonedDateTime
.
Instant instantNow = zdt.toInstant();
You can start with an Instant. No need to specify a time zone here, as Instant
is always in UTC.
Instant now = Instant.now();
NSMutableArray *arrSearchData;
NSArray *data=[arrNearByData objectAtIndex:i];
NSString *strValue=[NSString stringWithFormat:@"%@", [data valueForKey:@"restName"]];
NSRange r = [strValue rangeOfString:key options:NSCaseInsensitiveSearch];
if(r.location != NSNotFound)
{
[arrSearchData addObject:data];
}
One slight tweak I had to make on the other answers is to only unhide the bar in viewWillDisappear if the reason it is disappearing is due to a navigation item being pushed on it. This is because the view can disappear for other reasons.
So I only unhide the bar if this view is no longer the topmost view:
- (void) viewWillDisappear:(BOOL)animated
{
if (self.navigationController.topViewController != self)
{
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
[super viewWillDisappear:animated];
}
ngKeypress
, ngKeydown
and ngKeyup
are now part of AngularJS.
<!-- you can, for example, specify an expression to evaluate -->
<input ng-keypress="count = count + 1" ng-init="count=0">
<!-- or call a controller/directive method and pass $event as parameter.
With access to $event you can now do stuff like
finding which key was pressed -->
<input ng-keypress="changed($event)">
Read more here:
https://docs.angularjs.org/api/ng/directive/ngKeypress https://docs.angularjs.org/api/ng/directive/ngKeydown https://docs.angularjs.org/api/ng/directive/ngKeyup
Earlier solutions:
Solution 1: Use ng-change
with ng-model
<input type="text" placeholder="+639178983214" ng-model="mobileNumber"
ng-controller="RegisterDataController" ng-change="keydown()">
JS:
function RegisterDataController($scope) {
$scope.keydown = function() {
/* validate $scope.mobileNumber here*/
};
}
Solution 2. Use $watch
<input type="text" placeholder="+639178983214" ng-model="mobileNumber"
ng-controller="RegisterDataController">
JS:
$scope.$watch("mobileNumber", function(newValue, oldValue) {
/* change noticed */
});
F# is essentially the C++ of functional programming languages. They kept almost everything from Objective Caml, including the really stupid parts, and threw it on top of the .NET runtime in such a way that it brings in all the bad things from .NET as well.
For example, with Objective Caml you get one type of null, the option<T>. With F# you get three types of null, option<T>, Nullable<T>, and reference nulls. This means if you have an option you need to first check to see if it is "None", then you need to check if it is "Some(null)".
F# is like the old Java clone J#, just a bastardized language just to attract attention. Some people will love it, a few of those will even use it, but in the end it is still a 20-year-old language tacked onto the CLR.
I think it will depend of loose coupling degree that you want to bring to your code.
Factory method decouples things very well but factory class no.
In other words, it's easier to change things if you use factory method than if you use a simple factory (known as factory class).
Look into this example: https://connected2know.com/programming/java-factory-pattern/ . Now, imagine that you want to bring a new Animal. In Factory class you need to change the Factory but in the factory method, no, you only need to add a new subclass.
You don't specify what kind of list, but the generic List can use either the RemoveAt(index)
method, or the Remove(obj)
method:
// Remove(obj)
var item = resultList.Single(x => x.Id == 2);
resultList.Remove(item);
// RemoveAt(index)
resultList.RemoveAt(1);
You can use the following rule in .htaccess to rewrite a subdomain to a subfolder:
RewriteEngine On
# If the host is "sub.domain.com"
RewriteCond %{HTTP_HOST} ^sub.domain.com$ [NC]
# Then rewrite any request to /folder
RewriteRule ^((?!folder).*)$ /folder/$1 [NC,L]
Line-by-line explanation:
RewriteEngine on
The line above tells the server to turn on the engine for rewriting URLs.
RewriteCond %{HTTP_HOST} ^sub.domain.com$ [NC]
This line is a condition for the RewriteRule where we match against the HTTP host using a regex pattern. The condition says that if the host is sub.domain.com then execute the rule.
RewriteRule ^((?!folder).*)$ /folder/$1 [NC,L]
The rule matches http://sub.domain.com/foo and internally redirects it to http://sub.domain.com/folder/foo.
Replace sub.domain.com with your subdomain and folder with name of the folder you want to point your subdomain to.
Improving on the answer by musiphil, you can write a standard deviation function without the temporary vector diff
, just using a single inner_product
call with the C++11 lambda capabilities:
double stddev(std::vector<double> const & func)
{
double mean = std::accumulate(func.begin(), func.end(), 0.0) / func.size();
double sq_sum = std::inner_product(func.begin(), func.end(), func.begin(), 0.0,
[](double const & x, double const & y) { return x + y; },
[mean](double const & x, double const & y) { return (x - mean)*(y - mean); });
return std::sqrt(sq_sum / func.size());
}
I suspect doing the subtraction multiple times is cheaper than using up additional intermediate storage, and I think it is more readable, but I haven't tested the performance yet.
just commit current transaction.
currentSession.getTransaction().commit();
now you can begin another Transaction and do anything on entity
This is how a browser interprets and empty href. It assumes you want to link back to the page that you are on. This is the same as if you dont assign an action to a <form>
element.
If you add any word in the href it will append it to the current page unless you:
/
to the front of it telling it to append it to your base url e.g. http://www.whatever.com/something
#
sign in which case it is an in-page anchorEDIT: It was suggested that I add a link to help clarify the situation. I found the following site that I think does a really good job explaining the href
attribute of anchor tags and how it interprets URL paths. It is not incredibly technical and very human-readable. It uses lots of examples to illustrate the differences between the path types: http://www.mediacollege.com/internet/html/hyperlinks.html
You could do this:
if( ctrl[0].nodeName.toLowerCase() === 'input' ) {
// it was an input
}
or this, which is slower, but shorter and cleaner:
if( ctrl.is('input') ) {
// it was an input
}
If you want to be more specific, you can test the type:
if( ctrl.is('input:text') ) {
// it was an input
}
Open up SQL Server Configuration Manager
(search for it in the Start menu). Click on SQL Server Services
. The instance name of SQL Server is in parenthesis inline with SQL Server
service. If it says MSSQLSERVER, then it's the default instance. To connect to it in Management Studio, just type .
(dot) OR (local)
and click Connect. If the instance name is different, then use .\[instance name]
to connect to it (for example if the instance name is SQL2008, connect to .\SQL2008
).
Also make sure SQL Server
and SQL Server Browser
services are running, otherwise you won't be able to connect.
Edit:
Here's a screenshot of how it looks like on my machine. In this case, I have two instances installed: SQLExpress
and SQL2008
.
Big thanks to Skylarsutton for his answer. I'm posting this as a response to his, but because I'm posting code I can't reply as a comment. I already upvoted his answer so am not looking for any points. Just paying it forward.
For some reason BluetoothAdapter.ACTION_ACL_CONNECTED could not be resolved by Android Studio. Perhaps it was deprecated in Android 4.2.2? Here is a modification of his code. The registration code is the same; the receiver code differs slightly. I use this in a service which updates a Bluetooth-connected flag that other parts of the app reference.
public void onCreate() {
//...
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECT_REQUESTED);
filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
this.registerReceiver(BTReceiver, filter);
}
//The BroadcastReceiver that listens for bluetooth broadcasts
private final BroadcastReceiver BTReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
//Do something if connected
Toast.makeText(getApplicationContext(), "BT Connected", Toast.LENGTH_SHORT).show();
}
else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
//Do something if disconnected
Toast.makeText(getApplicationContext(), "BT Disconnected", Toast.LENGTH_SHORT).show();
}
//else if...
}
};
On Ubuntu; using mkvirtualenv -p python3 env_name
loads the virtualenv with python3.
Inside the env, use python --version
to verify.
Those are Java varargs. They let you pass any number of objects of a specific type (in this case they are of type JID).
In your example, the following function calls would be valid:
MessageBuilder msgBuilder; //There should probably be a call to a constructor here ;)
MessageBuilder msgBuilder2;
msgBuilder.withRecipientJids(jid1, jid2);
msgBuilder2.withRecipientJids(jid1, jid2, jid78_a, someOtherJid);
See more here: http://java.sun.com/j2se/1.5.0/docs/guide/language/varargs.html
The default shortcut for collapse/extend are:
Ctrl + Shift + [ : "Fold"
Ctrl + Shift + Alt + [ : "Fold all"
Ctrl + Shift + ] : "Unfold"
Ctrl + Shift + Alt + ] : "Unfold all"
Or go to keybindings.json and change as you wish.
For example:
{
"key": "cmd+k cmd+m",
"command": "editor.foldAll",
"when": "editorFocus"
},
{
"key": "cmd+m cmd+k",
"command": "editor.unfoldAll",
"when": "editorFocus"
},
using System.Diagnostics;
class Program
{
static void Main()
{
Process.Start("C:\\");
}
}
If your application needs cmd arguments, use something like this:
using System.Diagnostics;
class Program
{
static void Main()
{
LaunchCommandLineApp();
}
/// <summary>
/// Launch the application with some options set.
/// </summary>
static void LaunchCommandLineApp()
{
// For the example
const string ex1 = "C:\\";
const string ex2 = "C:\\Dir";
// Use ProcessStartInfo class
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.CreateNoWindow = false;
startInfo.UseShellExecute = false;
startInfo.FileName = "dcm2jpg.exe";
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.Arguments = "-f j -o \"" + ex1 + "\" -z 1.0 -s y " + ex2;
try
{
// Start the process with the info we specified.
// Call WaitForExit and then the using statement will close.
using (Process exeProcess = Process.Start(startInfo))
{
exeProcess.WaitForExit();
}
}
catch
{
// Log error.
}
}
}
I had the same problem, in my cases this happened because I changed the time on my computer to load .apk on google play. I spent a few hours to fix "this" problem until I remembered and changed the time back.
Long story short, it probably doesn't matter. Use whichever you think looks nicest.
Longer answer, using Oracle's Java 7 JDK specifically, since this isn't defined at the JLS:
String.valueOf
or Character.toString
work the same way, so use whichever you feel looks nicer. In fact, Character.toString
simply calls String.valueOf
(source).
So the question is, should you use one of those or String.substring
. Here again it doesn't matter much. String.substring
uses the original string's char[]
and so allocates one object fewer than String.valueOf
. This also prevents the original string from being GC'ed until the one-character string is available for GC (which can be a memory leak), but in your example, they'll both be available for GC after each iteration, so that doesn't matter. The allocation you save also doesn't matter -- a char[1]
is cheap to allocate, and short-lived objects (as the one-char string will be) are cheap to GC, too.
If you have a large enough data set that the three are even measurable, substring
will probably give a slight edge. Like, really slight. But that "if... measurable" contains the real key to this answer: why don't you just try all three and measure which one is fastest?
I had the same problem when trying to load Hadoop project in eclipse. I tried the solutions above, and I believe it might have worked in Eclipse Kepler... not even sure anymore (tried too many things).
With all the problems I was having, I decided to move on to Eclipse Luna, and the solutions above did not work for me.
There was another post that recommended changing the ... tag to package. I started doing that, and it would "clear" the errors... However, I start to think that the changes would bite me later - I am not an expert on Maven.
Fortunately, I found out how to remove all the errors. Go to Window->Preferences->Maven-> Error/Warnings and change "Plugin execution not covered by lifecycle..." option to "Ignore". Hope it helps.
pod update POD_NAME
will update latest pod but not update Podfile.lock
file.
So, you may update your Podfile with specific version of your pod e.g pod 'POD_NAME', '~> 2.9.0'
and then use command pod install
Later, you can remove the specific version naming from your Podfile and can again use pod install
. This will helps to keep Podfile.lock
updated.
BalusC gave a good description about the problem but it lacks a good end to end code that users can pick and test it for themselves.
Best practice is to always store date-time in UTC timezone in DB. Sql timestamp type does not have timezone info.
When writing datetime value to sql db
//Convert the time into UTC and build Timestamp object.
Timestamp ts = Timestamp.valueOf(LocalDateTime.now(ZoneId.of("UTC")));
//use setTimestamp on preparedstatement
preparedStatement.setTimestamp(1, ts);
When reading the value back from DB into java,
Then, change it to your desired timezone. Here I am changing it to Toronto timezone.
ResultSet resultSet = preparedStatement.executeQuery();
resultSet.next();
Timestamp timestamp = resultSet.getTimestamp(1);
ZonedDateTime timeInUTC = timestamp.toLocalDateTime().atZone(ZoneId.of("UTC"));
LocalDateTime timeInToronto = LocalDateTime.ofInstant(timeInUTC.toInstant(), ZoneId.of("America/Toronto"));
What worked for me was to change interval in bootstrap.js
Carousel.DEFAULTS = {
interval: 2000, // <----- change this
pause: 'hover',
wrap: true,
keyboard: true
}
Note that in the Java implementation, the number of bits to shift is mod'd by the size of the source.
For example:
(long) 4 >> 65
equals 2. You might expect shifting the bits to the right 65 times would zero everything out, but it's actually the equivalent of:
(long) 4 >> (65 % 64)
This is true for <<, >>, and >>>. I have not tried it out in other languages.
Check out all their awesome documentation!
Here is where they discuss the Warning Message.
Warning: Browser support for parsing strings is inconsistent. Because there is no specification on which formats should be supported, what works in some browsers will not work in other browsers.
For consistent results parsing anything other than ISO 8601 strings, you should use String + Format.
moment("12-25-1995", "MM-DD-YYYY");
If you have more than one format, check out their String + Formats (with an 's').
If you don't know the exact format of an input string, but know it could be one of many, you can use an array of formats.
moment("12-25-1995", ["MM-DD-YYYY", "YYYY-MM-DD"]);
Please checkout the documentation for anything more specific.
Checkout Parsing in Zone, the equivalent documentation for timezones.
The moment.tz constructor takes all the same arguments as the moment constructor, but uses the last argument as a time zone identifier.
var b = moment.tz("May 12th 2014 8PM", "MMM Do YYYY hA", "America/Toronto");
EDIT
//...
var dateFormat = "YYYY-M-D H:m"; //<-------- This part will get rid of the warning.
var aus1_s, aus2_s, aus3_s, aus4_s, aus5_s, aus6_s, aus6_e;
if ($("#custom1 :selected").val() == "AU" ) {
var region = 'Australia/Sydney';
aus1_s = moment.tz('2016-9-26 19:30', dateFormat, region);
aus2_s = moment.tz('2016-10-2 19:30', dateFormat, region);
aus3_s = moment.tz('2016-10-9 19:30', dateFormat, region);
aus4_s = moment.tz('2016-10-16 19:30', dateFormat, region);
aus5_s = moment.tz('2016-10-23 19:30', dateFormat, region);
aus6_s = moment.tz('2016-10-30 19:30', dateFormat, region);
aus6_e = moment.tz('2016-11-5 19:30', dateFormat, region);
} else if ($("#custom1 :selected").val() == "NZ" ) {
var region = 'Pacific/Auckland';
aus1_s = moment.tz('2016-9-28 20:30', dateFormat, region);
aus2_s = moment.tz('2016-10-4 20:30', dateFormat, region);
aus3_s = moment.tz('2016-10-11 20:30', dateFormat, region);
aus4_s = moment.tz('2016-10-18 20:30', dateFormat, region);
aus5_s = moment.tz('2016-10-25 20:30', dateFormat, region);
aus6_s = moment.tz('2016-11-2 20:30', dateFormat, region);
aus6_e = moment.tz('2016-11-9 20:30', dateFormat, region);
}
//...
I opened up my .gitconfig
and amended it with:
[core]
editor = 'C:/Users/miqid/AppData/Local/Code/app-0.1.0/Code.exe'
That did it for me (I'm on Windows 8).
However, I noticed that after I tried an arbitrary git commit
that in my Git Bash console I see the following message:
[9168:0504/160114:INFO:renderer_main.cc(212)] Renderer process started
Unsure of what the ramifications of this might be.
Write to a file with Python's print()
:
import numpy as np
import sys
stdout_sys = sys.stdout
np.set_printoptions(precision=8) # Sets number of digits of precision.
np.set_printoptions(suppress=True) # Suppress scientific notations.
np.set_printoptions(threshold=sys.maxsize) # Prints the whole arrays.
with open('myfile.txt', 'w') as f:
sys.stdout = f
print(nparr)
sys.stdout = stdout_sys
Use set_printoptions()
to customize how the objects are displayed.
You have to do it inline. But you really don't need that swap in Java.
You have to be sure to use UIPickerViewDataSource and UIPickerViewDelegate protocols or it will throw an AppDelegate error as of swift 3
Also please take note of the change in syntax:
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int
is now:
public func numberOfComponents(in pickerView: UIPickerView) -> Int
The following below worked for me.
import UIkit
class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
@IBOutlet weak var textBox: UITextField!
@IBOutlet weak var dropDown: UIPickerView!
var list = ["1", "2", "3"]
public func numberOfComponents(in pickerView: UIPickerView) -> Int{
return 1
}
public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{
return list.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
self.view.endEditing(true)
return list[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
self.textBox.text = self.list[row]
self.dropDown.isHidden = true
}
func textFieldDidBeginEditing(_ textField: UITextField) {
if textField == self.textBox {
self.dropDown.isHidden = false
//if you don't want the users to se the keyboard type:
textField.endEditing(true)
}
}
}
Yes it can have a constructor and it is defined and behaves just like any other class's constructor. Except that abstract classes can't be directly instantiated, only extended, so the use is therefore always from a subclass's constructor.
Yes, there are a number of ways that you can do this. The "fastest" way would be to add CSS to the div similar to the following
#term-defs {
height: 300px;
overflow: scroll; }
This will force the div to be scrollable, but this might not get the best effect. Another route would be to absolute fix the position of the items at the top, you can play with this by doing something like this.
#top {
position: fixed;
top: 0;
left: 0;
z-index: 999;
width: 100%;
height: 23px;
}
This will fix it to the top, on top of other content with a height of 23px.
The final implementation will depend on what effect you really want.
I am really surprised that no one has posted this yet
$(document).on('click','#my-butt', function(){
console.log('document is always there');
})
If you are unsure about what elements are going to be on that page at that time just attach it to document
.
Note: this is sub-optimal from performance perspective - to get maximum speed one should try to attach to the nearest parent of element that is going to be inserted.
If you are the only the person working on the project, what you can do is:
git checkout master
git push origin +HEAD
This will set the tip of origin/master to the same commit as master (and so delete the commits between 41651df and origin/master)
UPDATE: I have created a video on sending multipart/form-data requests to explain this better.
Actually, Postman can do this. Here is a screenshot
Newer version : Screenshot captured from postman chrome extension
Another version
Older version
Make sure you check the comment from @maxkoryukov
Be careful with explicit Content-Type header. Better - do not set it's value, the Postman is smart enough to fill this header for you. BUT, if you want to set the Content-Type: multipart/form-data - do not forget about boundary field.
This would work. Looping thorough array(yourArray) . Then loop through direct properties of each object (eachObj) .
yourArray.forEach( function (eachObj){
for (var key in eachObj) {
if (eachObj.hasOwnProperty(key)){
console.log(key,eachObj[key]);
}
}
});
I couldnt find a simple working example anywhere (as of Jan 19), so here is an updated version. I have chrome version 71.0.3578.98.
C# Websocket server :
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Security.Cryptography;
namespace WebSocketServer
{
class Program
{
static Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
static private string guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
static void Main(string[] args)
{
serverSocket.Bind(new IPEndPoint(IPAddress.Any, 8080));
serverSocket.Listen(1); //just one socket
serverSocket.BeginAccept(null, 0, OnAccept, null);
Console.Read();
}
private static void OnAccept(IAsyncResult result)
{
byte[] buffer = new byte[1024];
try
{
Socket client = null;
string headerResponse = "";
if (serverSocket != null && serverSocket.IsBound)
{
client = serverSocket.EndAccept(result);
var i = client.Receive(buffer);
headerResponse = (System.Text.Encoding.UTF8.GetString(buffer)).Substring(0, i);
// write received data to the console
Console.WriteLine(headerResponse);
Console.WriteLine("=====================");
}
if (client != null)
{
/* Handshaking and managing ClientSocket */
var key = headerResponse.Replace("ey:", "`")
.Split('`')[1] // dGhlIHNhbXBsZSBub25jZQ== \r\n .......
.Replace("\r", "").Split('\n')[0] // dGhlIHNhbXBsZSBub25jZQ==
.Trim();
// key should now equal dGhlIHNhbXBsZSBub25jZQ==
var test1 = AcceptKey(ref key);
var newLine = "\r\n";
var response = "HTTP/1.1 101 Switching Protocols" + newLine
+ "Upgrade: websocket" + newLine
+ "Connection: Upgrade" + newLine
+ "Sec-WebSocket-Accept: " + test1 + newLine + newLine
//+ "Sec-WebSocket-Protocol: chat, superchat" + newLine
//+ "Sec-WebSocket-Version: 13" + newLine
;
client.Send(System.Text.Encoding.UTF8.GetBytes(response));
var i = client.Receive(buffer); // wait for client to send a message
string browserSent = GetDecodedData(buffer, i);
Console.WriteLine("BrowserSent: " + browserSent);
Console.WriteLine("=====================");
//now send message to client
client.Send(GetFrameFromString("This is message from server to client."));
System.Threading.Thread.Sleep(10000);//wait for message to be sent
}
}
catch (SocketException exception)
{
throw exception;
}
finally
{
if (serverSocket != null && serverSocket.IsBound)
{
serverSocket.BeginAccept(null, 0, OnAccept, null);
}
}
}
public static T[] SubArray<T>(T[] data, int index, int length)
{
T[] result = new T[length];
Array.Copy(data, index, result, 0, length);
return result;
}
private static string AcceptKey(ref string key)
{
string longKey = key + guid;
byte[] hashBytes = ComputeHash(longKey);
return Convert.ToBase64String(hashBytes);
}
static SHA1 sha1 = SHA1CryptoServiceProvider.Create();
private static byte[] ComputeHash(string str)
{
return sha1.ComputeHash(System.Text.Encoding.ASCII.GetBytes(str));
}
//Needed to decode frame
public static string GetDecodedData(byte[] buffer, int length)
{
byte b = buffer[1];
int dataLength = 0;
int totalLength = 0;
int keyIndex = 0;
if (b - 128 <= 125)
{
dataLength = b - 128;
keyIndex = 2;
totalLength = dataLength + 6;
}
if (b - 128 == 126)
{
dataLength = BitConverter.ToInt16(new byte[] { buffer[3], buffer[2] }, 0);
keyIndex = 4;
totalLength = dataLength + 8;
}
if (b - 128 == 127)
{
dataLength = (int)BitConverter.ToInt64(new byte[] { buffer[9], buffer[8], buffer[7], buffer[6], buffer[5], buffer[4], buffer[3], buffer[2] }, 0);
keyIndex = 10;
totalLength = dataLength + 14;
}
if (totalLength > length)
throw new Exception("The buffer length is small than the data length");
byte[] key = new byte[] { buffer[keyIndex], buffer[keyIndex + 1], buffer[keyIndex + 2], buffer[keyIndex + 3] };
int dataIndex = keyIndex + 4;
int count = 0;
for (int i = dataIndex; i < totalLength; i++)
{
buffer[i] = (byte)(buffer[i] ^ key[count % 4]);
count++;
}
return Encoding.ASCII.GetString(buffer, dataIndex, dataLength);
}
//function to create frames to send to client
/// <summary>
/// Enum for opcode types
/// </summary>
public enum EOpcodeType
{
/* Denotes a continuation code */
Fragment = 0,
/* Denotes a text code */
Text = 1,
/* Denotes a binary code */
Binary = 2,
/* Denotes a closed connection */
ClosedConnection = 8,
/* Denotes a ping*/
Ping = 9,
/* Denotes a pong */
Pong = 10
}
/// <summary>Gets an encoded websocket frame to send to a client from a string</summary>
/// <param name="Message">The message to encode into the frame</param>
/// <param name="Opcode">The opcode of the frame</param>
/// <returns>Byte array in form of a websocket frame</returns>
public static byte[] GetFrameFromString(string Message, EOpcodeType Opcode = EOpcodeType.Text)
{
byte[] response;
byte[] bytesRaw = Encoding.Default.GetBytes(Message);
byte[] frame = new byte[10];
int indexStartRawData = -1;
int length = bytesRaw.Length;
frame[0] = (byte)(128 + (int)Opcode);
if (length <= 125)
{
frame[1] = (byte)length;
indexStartRawData = 2;
}
else if (length >= 126 && length <= 65535)
{
frame[1] = (byte)126;
frame[2] = (byte)((length >> 8) & 255);
frame[3] = (byte)(length & 255);
indexStartRawData = 4;
}
else
{
frame[1] = (byte)127;
frame[2] = (byte)((length >> 56) & 255);
frame[3] = (byte)((length >> 48) & 255);
frame[4] = (byte)((length >> 40) & 255);
frame[5] = (byte)((length >> 32) & 255);
frame[6] = (byte)((length >> 24) & 255);
frame[7] = (byte)((length >> 16) & 255);
frame[8] = (byte)((length >> 8) & 255);
frame[9] = (byte)(length & 255);
indexStartRawData = 10;
}
response = new byte[indexStartRawData + length];
int i, reponseIdx = 0;
//Add the frame bytes to the reponse
for (i = 0; i < indexStartRawData; i++)
{
response[reponseIdx] = frame[i];
reponseIdx++;
}
//Add the data bytes to the response
for (i = 0; i < length; i++)
{
response[reponseIdx] = bytesRaw[i];
reponseIdx++;
}
return response;
}
}
}
Client html and javascript:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"_x000D_
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">_x000D_
<html xmlns="http://www.w3.org/1999/xhtml">_x000D_
<head>_x000D_
<script type="text/javascript">_x000D_
var socket = new WebSocket('ws://localhost:8080/websession');_x000D_
socket.onopen = function() {_x000D_
// alert('handshake successfully established. May send data now...');_x000D_
socket.send("Hi there from browser.");_x000D_
};_x000D_
socket.onmessage = function (evt) {_x000D_
//alert("About to receive data");_x000D_
var received_msg = evt.data;_x000D_
alert("Message received = "+received_msg);_x000D_
};_x000D_
socket.onclose = function() {_x000D_
alert('connection closed');_x000D_
};_x000D_
</script>_x000D_
</head>_x000D_
<body>_x000D_
</body>_x000D_
</html>
_x000D_
For some reason, none of the above worked for me. This DID however:
,
Replace All
Somehow CTRL + SHIFT + J is registered as a linebreak.
This also happens to me almost regularly. Haven't made a protocol when this happens exactly, but I have a suspicion that it occurs whenever my virtual machine exists "unexpectedly". If I close the VM window (I am using Ubuntu 18.04) and start again, things always(?) work. But if the VM window is still open when my laptop is shut down (Windows host system), then I encounter this problem rather frequently.
As to all the answers given here:
thank you - they are very useful; I usually save a local copy of my code, restore the repo from remote, and move the backup copy back into the local folder.
as the underlying problem is not really a git issue, but rather a VM and/or Linux issue, I wonder if there shouldn't be a way to cure the reason rather the symptoms? Doesn't this kind of error indicate that some file system changes are not "applied" in any reasonable time, but only cached? (see for example https://unix.stackexchange.com/questions/464184/are-file-edits-in-linux-directly-saved-into-disk) -- to me it appears as if virtual Linux machines don't fsynch their stuff frequently enough. Whether this is an issue of Oracle's VirtualBox (which otherwise works very nicely) or of the guest file system, or of some settings, which we all overlook, is beyond my expertise. But I would be happy if someone could shed light on this.
This is how I did it.
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("SAP Multiple Entries");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel(new GridLayout(10,10,10,10));
frame.setLayout(new FlowLayout());
frame.setSize(512, 512);
JButton button = new JButton("Select File");
button.setPreferredSize(new Dimension(256, 256));
panel.add(button);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser fileChooser = new JFileChooser();
int returnValue = fileChooser.showOpenDialog(null);
if (returnValue == JFileChooser.APPROVE_OPTION) {
File selectedFile = fileChooser.getSelectedFile();
keep = selectedFile.getAbsolutePath();
// System.out.println(keep);
//out.println(file.flag);
if(file.flag==true) {
JOptionPane.showMessageDialog(null, "It is done! \nLocation: " + file.path , "Success Message", JOptionPane.INFORMATION_MESSAGE);
}
else{
JOptionPane.showMessageDialog(null, "failure", "not okay", JOptionPane.INFORMATION_MESSAGE);
}
}
}
});
frame.add(button);
frame.pack();
frame.setVisible(true);
To get the value of a pointer, just de-reference the pointer.
int *ptr;
int value;
*ptr = 9;
value = *ptr;
value is now 9.
I suggest you read more about pointers, this is their base functionality.
Try this:
(add-hook 'text-mode-hook
(function
(lambda ()
(setq tab-width 4)
(define-key text-mode-map "\C-i" 'self-insert-command)
)))
That will make TAB always insert a literal TAB character with tab stops every 4 characters (but only in Text mode). If that's not what you're asking for, please describe the behavior you'd like to see.
Generally RuntimeExceptions are exceptions that can be prevented programmatically. E.g NullPointerException
, ArrayIndexOutOfBoundException
. If you check for null
before calling any method, NullPointerException
would never occur. Similarly ArrayIndexOutOfBoundException
would never occur if you check the index first. RuntimeException
are not checked by the compiler, so it is clean code.
EDIT : These days people favor RuntimeException
because the clean code it produces. It is totally a personal choice.
To insert a VARCHAR2
into a BLOB
column you can rely on the function utl_raw.cast_to_raw
as next:
insert into mytable(id, myblob) values (1, utl_raw.cast_to_raw('some magic here'));
It will cast your input VARCHAR2
into RAW
datatype without modifying its content, then it will insert the result into your BLOB
column.
More details about the function utl_raw.cast_to_raw
For this issue need to add the partition for date column values, If last partition 20201231245959, then inserting the 20210110245959 values, this issue will occurs.
For that need to add the 2021 partition into that table
ALTER TABLE TABLE_NAME ADD PARTITION PARTITION_NAME VALUES LESS THAN (TO_DATE('2021-12-31 24:59:59', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) NOCOMPRESS
Retrieve the matched rows only, that is, A intersect B
.
SELECT *
FROM dbo.Students S
INNER JOIN dbo.Advisors A
ON S.Advisor_ID = A.Advisor_ID
Select all records from the first table, and any records in the second table that match the joined keys.
SELECT *
FROM dbo.Students S
LEFT JOIN dbo.Advisors A
ON S.Advisor_ID = A.Advisor_ID
Select all records from the second table, and any records in the first table that match the joined keys.
SELECT *
FROM dbo.Students S
FULL JOIN dbo.Advisors A
ON S.Advisor_ID = A.Advisor_ID
A constexpr symbolic constant must be given a value that is known at compile time. For example:
?constexpr int max = 100;
void use(int n)
{
constexpr int c1 = max+7; // OK: c1 is 107
constexpr int c2 = n+7; // Error: we don’t know the value of c2
// ...
}
To handle cases where the value of a “variable” that is initialized with a value that is not known at compile time but never changes after initialization, C++ offers a second form of constant (a const). For Example:
?constexpr int max = 100;
void use(int n)
{
constexpr int c1 = max+7; // OK: c1 is 107
const int c2 = n+7; // OK, but don’t try to change the value of c2
// ...
c2 = 7; // error: c2 is a const
}
Such “const variables” are very common for two reasons:
Reference : "Programming: Principles and Practice Using C++" by Stroustrup
None of the answers worked until I removed the HasNoKey() method from the entity. Dont forget to remove this from your data context or the [Key] attribute will not fix anything.
I agree with Ed B. You should use EXISTS method but a more efficient way to do this is:
IF EXISTS(SELECT 1 FROM service s WHERE s.service_id = ?)
BEGIN
--DO STUFF HERE
END
HTH
For the most updated version 2.71828 These are your answer.
Q1: Does it not have local disk cache?
A1: There is default caching within Picasso and the request flow just like this
App -> Memory -> Disk -> Server
Wherever they met their image first, they'll use that image and then stop the request flow. What about response flow? Don't worry, here it is.
Server -> Disk -> Memory -> App
By default, they will store into a local disk first for the extended keeping cache. Then the memory, for the instance usage of the cache.
You can use the built-in indicator in Picasso to see where images form by enabling this.
Picasso.get().setIndicatorEnabled(true);
It will show up a flag on the top left corner of your pictures.
Q2: How do I enable disk caching as I will be using the same image multiple times?
A2: You don't have to enable it. It's the default.
What you'll need to do is DISABLE it when you want your images always fresh. There is 2-way of disabled caching.
.memoryPolicy()
to NO_CACHE and/or NO_STORE and the flow will look like this.NO_CACHE will skip looking up images from memory.
App -> Disk -> Server
NO_STORE will skip store images in memory when the first load images.
Server -> Disk -> App
.networkPolicy()
to NO_CACHE and/or NO_STORE and the flow will look like this.NO_CACHE will skip looking up images from disk.
App -> Memory -> Server
NO_STORE will skip store images in the disk when the first load images.
Server -> Memory -> App
You can DISABLE neither for fully no caching images. Here is an example.
Picasso.get().load(imageUrl)
.memoryPolicy(MemoryPolicy.NO_CACHE,MemoryPolicy.NO_STORE)
.networkPolicy(NetworkPolicy.NO_CACHE, NetworkPolicy.NO_STORE)
.fit().into(banner);
The flow of fully no caching and no storing will look like this.
App -> Server //Request
Server -> App //Response
So, you may need this to minify your app storage usage also.
Q3: Do I need to add some disk permission to android manifest file?
A3: No, but don't forget to add the INTERNET permission for your HTTP request.
With VSCode 1.43 (Q1 2020), those Alt+? / Alt+?, or Ctrl+- / Ctrl+Shift+- will also... preserve selection.
See issue 89699:
Benjamin Pasero (bpasero
) adds:
going back/forward restores selections as they were.
Note that in order to get a history entry there needs to be at least 10 lines between the positions to consider the entry as new entry.
In my case, stopping Proxifier fixed it. I added a rule to route any connections from vpnkit.exe
as Direct
and it now works.
Numpy has a convenience function, np.fft.fftfreq
to compute the frequencies associated with FFT components:
from __future__ import division
import numpy as np
import matplotlib.pyplot as plt
data = np.random.rand(301) - 0.5
ps = np.abs(np.fft.fft(data))**2
time_step = 1 / 30
freqs = np.fft.fftfreq(data.size, time_step)
idx = np.argsort(freqs)
plt.plot(freqs[idx], ps[idx])
Note that the largest frequency you see in your case is not 30 Hz, but
In [7]: max(freqs)
Out[7]: 14.950166112956811
You never see the sampling frequency in a power spectrum. If you had had an even number of samples, then you would have reached the Nyquist frequency, 15 Hz in your case (although numpy would have calculated it as -15).
To achieve this feat, define a outer linear layout with a weightSum={amount of weight to distribute}
.
it defines the maximum weight sum. If unspecified, the sum is computed by adding the layout_weight of all of the children. This can be used for instance to give a single child 50% of the total available space by giving it a layout_weight of 0.5 and setting the weightSum to 1.0.Another example would be set weightSum=2, and if the two children set layout_weight=1
then each would get 50% of the available space.
WeightSum is dependent on the amount of children in the parent layout.
In the past, I have used a bridge using the Linux Netem (Network Emulation) functionality. It is highly configurable -- allowing the introduction of delays (the first example is for a WAN), packet loss, corruption, etc.
I'm noting that Netem worked very well for my applications, but I also ended up using WANem several times. The provided bootable ISO (and virtual appliance images) made it quite handy.
Double check if you have set and initial value for int and decimal values to be printed.
This sample is printing an empty line
declare @Number INT
print 'The number is : ' + CONVERT(VARCHAR, @Number)
And this sample is printing -> The number is : 1
declare @Number INT = 1
print 'The number is : ' + CONVERT(VARCHAR, @Number)
I had the same error message but for a totally different reason.
Being new to docker, I issued
docker run -it <crypticalId>
where <crypticalId> was the id of my newly created container.
But, the run command wants the id of an image, not a container.
To start a container, docker wants
docker start -i <crypticalId>
Since @Etienne asked how to do this without melting the data (which in general is the preferred method, but I recognize there may be some cases where that is not possible), I present the following alternative.
Start with a subset of the original data:
datos <-
structure(list(fecha = structure(c(1317452400, 1317538800, 1317625200,
1317711600, 1317798000, 1317884400, 1317970800, 1318057200, 1318143600,
1318230000, 1318316400, 1318402800, 1318489200, 1318575600, 1318662000,
1318748400, 1318834800, 1318921200, 1319007600, 1319094000), class = c("POSIXct",
"POSIXt"), tzone = ""), TempMax = c(26.58, 27.78, 27.9, 27.44,
30.9, 30.44, 27.57, 25.71, 25.98, 26.84, 33.58, 30.7, 31.3, 27.18,
26.58, 26.18, 25.19, 24.19, 27.65, 23.92), TempMedia = c(22.88,
22.87, 22.41, 21.63, 22.43, 22.29, 21.89, 20.52, 19.71, 20.73,
23.51, 23.13, 22.95, 21.95, 21.91, 20.72, 20.45, 19.42, 19.97,
19.61), TempMin = c(19.34, 19.14, 18.34, 17.49, 16.75, 16.75,
16.88, 16.82, 14.82, 16.01, 16.88, 17.55, 16.75, 17.22, 19.01,
16.95, 17.55, 15.21, 14.22, 16.42)), .Names = c("fecha", "TempMax",
"TempMedia", "TempMin"), row.names = c(NA, 20L), class = "data.frame")
You can get the desired effect by (and this also cleans up the original plotting code):
ggplot(data = datos, aes(x = fecha)) +
geom_line(aes(y = TempMax, colour = "TempMax")) +
geom_line(aes(y = TempMedia, colour = "TempMedia")) +
geom_line(aes(y = TempMin, colour = "TempMin")) +
scale_colour_manual("",
breaks = c("TempMax", "TempMedia", "TempMin"),
values = c("red", "green", "blue")) +
xlab(" ") +
scale_y_continuous("Temperatura (C)", limits = c(-10,40)) +
labs(title="TITULO")
The idea is that each line is given a color by mapping the colour
aesthetic to a constant string. Choosing the string which is what you want to appear in the legend is the easiest. The fact that in this case it is the same as the name of the y
variable being plotted is not significant; it could be any set of strings. It is very important that this is inside the aes
call; you are creating a mapping to this "variable".
scale_colour_manual
can now map these strings to the appropriate colors. The result is
In some cases, the mapping between the levels and colors needs to be made explicit by naming the values in the manual scale (thanks to @DaveRGP for pointing this out):
ggplot(data = datos, aes(x = fecha)) +
geom_line(aes(y = TempMax, colour = "TempMax")) +
geom_line(aes(y = TempMedia, colour = "TempMedia")) +
geom_line(aes(y = TempMin, colour = "TempMin")) +
scale_colour_manual("",
values = c("TempMedia"="green", "TempMax"="red",
"TempMin"="blue")) +
xlab(" ") +
scale_y_continuous("Temperatura (C)", limits = c(-10,40)) +
labs(title="TITULO")
(giving the same figure as before). With named values, the breaks can be used to set the order in the legend and any order can be used in the values.
ggplot(data = datos, aes(x = fecha)) +
geom_line(aes(y = TempMax, colour = "TempMax")) +
geom_line(aes(y = TempMedia, colour = "TempMedia")) +
geom_line(aes(y = TempMin, colour = "TempMin")) +
scale_colour_manual("",
breaks = c("TempMedia", "TempMax", "TempMin"),
values = c("TempMedia"="green", "TempMax"="red",
"TempMin"="blue")) +
xlab(" ") +
scale_y_continuous("Temperatura (C)", limits = c(-10,40)) +
labs(title="TITULO")
Continuum Analytics now provides instructions on how to setup Anaconda with various IDEs including Pycharm here. However, with Pycharm 5.0.1 running on Unbuntu 15.10 Project Interpreter settings were found via the File | Settings and then under the Project branch of the treeview on the Settings dialog.
There are two possible ways to implement it. The easiest way is direct result to dev/null
exec("run_baby_run > /dev/null 2>&1 &");
But in case you have any other operations to be performed you may consider ignore_user_abort In this case the script will be running even after you close connection.