In case you want to tag a specific commit like i do

Here's a command to do that :-

Example:

git tag -a v1.0 7cceb02 -m "Your message here"

Where 7cceb02 is the beginning part of the commit id.

You can then push the tag using git push origin v1.0.

You can do git log to show all the commit id's in your current branch.

seq -w will detect the max input width and normalize the width of the output.

for num in $(seq -w 01 05); do
    ...
done

At time of writing this didn't work on the newest versions of OSX, so you can either install macports and use its version of seq, or you can set the format explicitly:

seq -f '%02g' 1 3
    01
    02
    03

But given the ugliness of format specifications for such a simple problem, I prefer the solution Henk and Adrian gave, which just uses Bash. Apple can't screw this up since there's no generic "unix" version of Bash:

echo {01..05}

Or:

for number in {01..05}; do ...; done

    public <T1 extends Object, T2 extends Object> void copy(T1 origEntity, T2 destEntity) {
        DozerBeanMapper mapper = new DozerBeanMapper();
        mapper.map(origEntity,destEntity);
    }

 <dependency>
            <groupId>net.sf.dozer</groupId>
            <artifactId>dozer</artifactId>
            <version>5.4.0</version>
        </dependency>

It's the index column, pass pd.to_csv(..., index=False) to not write out an unnamed index column in the first place, see the to_csv() docs.

Example:

In [37]:
df = pd.DataFrame(np.random.randn(5,3), columns=list('abc'))
pd.read_csv(io.StringIO(df.to_csv()))

Out[37]:
   Unnamed: 0         a         b         c
0           0  0.109066 -1.112704 -0.545209
1           1  0.447114  1.525341  0.317252
2           2  0.507495  0.137863  0.886283
3           3  1.452867  1.888363  1.168101
4           4  0.901371 -0.704805  0.088335

compare with:

In [38]:
pd.read_csv(io.StringIO(df.to_csv(index=False)))

Out[38]:
          a         b         c
0  0.109066 -1.112704 -0.545209
1  0.447114  1.525341  0.317252
2  0.507495  0.137863  0.886283
3  1.452867  1.888363  1.168101
4  0.901371 -0.704805  0.088335

You could also optionally tell read_csv that the first column is the index column by passing index_col=0:

In [40]:
pd.read_csv(io.StringIO(df.to_csv()), index_col=0)

Out[40]:
          a         b         c
0  0.109066 -1.112704 -0.545209
1  0.447114  1.525341  0.317252
2  0.507495  0.137863  0.886283
3  1.452867  1.888363  1.168101
4  0.901371 -0.704805  0.088335

If your browser supports CSS3, try using the CSS element Calc()

height: calc(100% - 65px);

you might also want to adding browser compatibility options:

height: -o-calc(100% - 65px); /* opera */
height: -webkit-calc(100% - 65px); /* google, safari */
height: -moz-calc(100% - 65px); /* firefox */

also make sure you have spaces between values, see: https://stackoverflow.com/a/16291105/427622

If I understand the updated question correctly, something like this should work

def function1():
    print "function1 called"

def function2():
    print "function2 called"

def function3():
    print "function3 called"

called_functions = set()
while True:
    n = raw_input("choose a function: 1,2 or 3 ")
    func = {"1": function1,
            "2": function2,
            "3": function3}.get(n)

    if func in called_functions:
        print "That function has already been called"
    else:
        called_functions.add(func)
        func()

Well, obviously you are trying to send something which is not a string or buffer. :) It works with console, because console accepts anything. Simple example:

var obj = { test : "test" };
console.log( obj ); // works
res.write( obj ); // fails

One way to convert anything to string is to do that:

res.write( "" + obj );

whenever you are trying to send something. The other way is to call .toString() method:

res.write( obj.toString( ) );

Note that it still might not be what you are looking for. You should always pass strings/buffers to .write without such tricks.

As a side note: I assume that request is a asynchronous operation. If that's the case, then res.end(); will be called before any writing, i.e. any writing will fail anyway ( because the connection will be closed at that point ). Move that line into the handler:

request({
    uri: 'http://www.google.com',
    method: 'GET',
    maxRedirects:3
}, function(error, response, body) {
    if (!error) {
        res.write(response.statusCode);
    } else {
        //response.end(error);
        res.write(error);
    }
    res.end( );
});

You can find an example below. Basically you attach a function to window's scroll event and trace scrollTop property and if it's higher than desired threshold you apply position: fixed and some other css properties.

jQuery(function($) {_x000D_
  $(window).scroll(function fix_element() {_x000D_
    $('#target').css(_x000D_
      $(window).scrollTop() > 100_x000D_
        ? { 'position': 'fixed', 'top': '10px' }_x000D_
        : { 'position': 'relative', 'top': 'auto' }_x000D_
    );_x000D_
    return fix_element;_x000D_
  }());_x000D_
});

body {_x000D_
  height: 2000px;_x000D_
  padding-top: 100px;_x000D_
}_x000D_
code {_x000D_
  padding: 5px;_x000D_
  background: #efefef;_x000D_
}_x000D_
#target {_x000D_
  color: #c00;_x000D_
  font: 15px arial;_x000D_
  padding: 10px;_x000D_
  margin: 10px;_x000D_
  border: 1px solid #c00;_x000D_
  width: 200px;_x000D_
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div id="target">This <code>div</code> is going to be fixed</div>

Finally I found a solution - I'm posting it here for other people who might have the same problem (all 5 of you):

• Change the product ID to *

• Under product add The following:

  <Property Id="PREVIOUSVERSIONSINSTALLED" Secure="yes" />
  <Upgrade Id="YOUR_GUID">  
     <UpgradeVersion
        Minimum="1.0.0.0" Maximum="99.0.0.0"
        Property="PREVIOUSVERSIONSINSTALLED"
        IncludeMinimum="yes" IncludeMaximum="no" />
  </Upgrade> 
  

• Under InstallExecuteSequence add:

  <RemoveExistingProducts Before="InstallInitialize" /> 
  

From now on whenever I install the product it removed previous installed versions.

Note: replace upgrade Id with your own GUID

Right click on the project

->Run As --> Run configurations.

Then select Maven Build

Then click new button to create a configuration of the selected type. Click on Browse workspace (now is Workspace...) then select your project and in goals specify eclipse:eclipse

What worked for me was to download the .deb file directly and install it (dpkg -i mysql-connector-python_2.1.7-1ubuntu16.04_all.deb). Python downloads are located here (you will need to create a free MySQL login to download first). Make sure you choose the correct version, i.e. (python_2.1.7 vs. python-py3_2.1.7). Only the "Architecture Independent" version worked for me.

Yes, its possible and its fairly easy.

1. Near the run button, from the dropdown, choose "edit configurations..."
2. On the left, click the plus, then maven and rename it "Tomcat" on the right side.
3. for command line, enter "spring-boot:run"
4. Under the runner tab, for 'VM Options', enter "-XX:MaxPermSize=256m -Xms128m -Xmx512m -Djava.awt.headless=true" NOTE: 'use project settings' should be unticked.
5. For environment variables enter "env=dev"
6. Finally, click Ok.

When you're ready to press run, if you go to "localhost:8080/< page_name > " you'll see your page.

My pom.xml file is the same as the Official spring tutorial Serving Web Content with Spring MVC

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.springframework</groupId>
    <artifactId>gs-serving-web-content</artifactId>
    <version>0.1.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <properties>
        <java.version>1.8</java.version>
    </properties>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Thanks for help. This is the solution: I created the subview and i add a gesture to remove it

@IBAction func infoView(sender: UIButton) {
    var testView: UIView = UIView(frame: CGRectMake(0, 0, 320, 568))
    testView.backgroundColor = UIColor.blueColor()
    testView.alpha = 0.5
    testView.tag = 100
    testView.userInteractionEnabled = true
    self.view.addSubview(testView)

    let aSelector : Selector = "removeSubview"
    let tapGesture = UITapGestureRecognizer(target:self, action: aSelector)
    testView.addGestureRecognizer(tapGesture)
}

func removeSubview(){
    println("Start remove sibview")
    if let viewWithTag = self.view.viewWithTag(100) {
        viewWithTag.removeFromSuperview()
    }else{
        println("No!")
    }
}

Update:

Swift 3+

@IBAction func infoView(sender: UIButton) {
    let testView: UIView = UIView(frame: CGRect(x: 0, y: 0, width: 320, height: 568))
    testView.backgroundColor = .blue
    testView.alpha = 0.5
    testView.tag = 100
    testView.isUserInteractionEnabled = true
    self.view.addSubview(testView)

    let aSelector : Selector = #selector(GasMapViewController.removeSubview)
    let tapGesture = UITapGestureRecognizer(target:self, action: aSelector)
    testView.addGestureRecognizer(tapGesture)
}

func removeSubview(){
    print("Start remove sibview")
    if let viewWithTag = self.view.viewWithTag(100) {
        viewWithTag.removeFromSuperview()
    }else{
        print("No!")
    }
}

1) The function returns a cell for a table view yes? So, the returned object is of type UITableViewCell. These are the objects that you see in the table's rows. This function basically returns a cell, for a table view. But you might ask, how the function would know what cell to return for what row, which is answered in the 2nd question

2)NSIndexPath is essentially two things-

• Your Section
• Your row

Because your table might be divided to many sections and each with its own rows, this NSIndexPath will help you identify precisely which section and which row. They are both integers. If you're a beginner, I would say try with just one section.

It is called if you implement the UITableViewDataSource protocol in your view controller. A simpler way would be to add a UITableViewController class. I strongly recommend this because it Apple has some code written for you to easily implement the functions that can describe a table. Anyway, if you choose to implement this protocol yourself, you need to create a UITableViewCell object and return it for whatever row. Have a look at its class reference to understand re-usablity because the cells that are displayed in the table view are reused again and again(this is a very efficient design btw).

As for when you have two table views, look at the method. The table view is passed to it, so you should not have a problem with respect to that.

Are you using JavaScript or jQuery besides the html? If you are, you can do something like:

HTML:

<select id='some_selector'></select>?

jQuery:

var select = '';
for (i=1;i<=100;i++){
    select += '<option val=' + i + '>' + i + '</option>';
}
$('#some_selector').html(select);

As you can see here.

Another option for compatible browsers instead of select, you can use is HTML5's input type=number:

<input type="number" min="1" max="100" value="1">

curl is an extension that needs to be installed, it's got nothing to do with the PHP version.

http://www.php.net/manual/en/curl.setup.php

You can simply do something like this in your CSS, using border-spacing and padding:

table {_x000D_
  border-collapse: collapse;_x000D_
}_x000D_
_x000D_
td, th {_x000D_
  padding: 1em;_x000D_
  border: 1px solid blue;_x000D_
}

<table>_x000D_
  <tr>_x000D_
    <th>head_1</th>_x000D_
    <th>head_2</th>_x000D_
    <th>head_3</th>_x000D_
    <th>head_4</th>_x000D_
  </tr>_x000D_
  <tr>_x000D_
    <td>txt_1</td>_x000D_
    <td>txt_2</td>_x000D_
    <td>txt_3</td>_x000D_
    <td>txt_4</td>_x000D_
  </tr>_x000D_
</table>

Seems like you want to move around. Try this:

ActiveSheet.UsedRange.select

results in....

If you want to move that selection 3 rows up then try this

ActiveSheet.UsedRange.offset(-3).select

does this...

I've discovered a fix that helps you be able to build successfully in a multi developer environment:

Instead of changing the password (which causes the .pfx to be changed), reselect the .pfx file from the combobox. This then invokes the password dialog. After entering the password, the project will build OK. Every dev can do this on his local machine without actually modifying the .pfx file.

I'm still having problems getting assemblies to be signed on our build server machine. I'm getting the same error there, however using the sn.exe -i method does not fix the problem for the buildserver.

My issue was a little different. Instead of jdbc:oracle:thin:@server:port/service i had it as server:port/service.

Missing was jdbc:oracle:thin:@ in url attribute in GlobalNamingResources.Resource. But I overlooked tomcat exception's

java.sql.SQLException: Cannot create JDBC driver of class 'oracle.jdbc.driver.OracleDriver' for connect URL 'server:port/service'

The setInterval function returns an integer value, which is the id of the "timer instance" that you've created.

It is this integer value that you need to pass to clearInterval

e.g:

var timerID = setInterval(fontChange,500);

and later

clearInterval(timerID);

If you do not want to define a separate class for nested json , Defining nested json object as JsonNode should work ,for example :

{"id":2,"socket":"0c317829-69bf-43d6-b598-7c0c550635bb","type":"getDashboard","data":{"workstationUuid":"ddec1caa-a97f-4922-833f-632da07ffc11"},"reply":true}

@JsonProperty("data")
    private JsonNode data;

I was facing the same issue, so firstly i checked my npm file what i have set, i checked it with this command:-

npm config get proxy

and i find out i have set wrong proxy and i set my desire proxy as follow:

npm config set proxy http://xxx.xxx.xxx.4:8080   
npm config set https-proxy http://xxx.xxx.xxx.4:8080

After that it works to me

After adding right path to the PATH variable issue is resolved.

Below are the steps to find the right path.

1. Enter: npm install -g react-native-cli
output: /usr/local/Cellar/node/6.1.0/libexec/npm/bin/react-native ->/usr/local/Cellar/node/6.1.0/libexec/npm/lib/node_modules/react-native-cli/index.js/usr/local/Cellar/node/6.1.0/libexec/npm/lib
+-- [email protected] 

from above output you can clearly see the path: /usr/local/Cellar/node/6.1.0/libexec/npm/bin/react-native

export PATH="/usr/local/Cellar/node/6.1.0/libexec/npm/bin:$PATH"

react-native init appName

cd appName

react-native run-ios

if you getting xcrun: error: unable to find utility "simctl" at this stage you can reslove using below steps

XCode -> Preferences -> Locations -> Command Line Tools -> Choose Xcode 7.2.1

You can find original solution from xcrun unable to find simctl

Thanks to @fbozo

That's It!!!

Another solution which is permanent in nature between sessions without requiring you to run a specific command when opening chrome is as follows:

1. Open a Chrome window
2. In the URL bar enter Chrome://net-internals
3. Click on "Domain Security Policy" in the side-bar
4. Add the domain name which you want to always be able to access in http form into the "Add HSTS/PKP domain" section

With the release of Java 5, the product version was made distinct from the developer version as described here

add plt.figure(figsize=(16,5)) before the sns.heatmap and play around with the figsize numbers till you get the desired size

...

plt.figure(figsize = (16,5))

ax = sns.heatmap(df1.iloc[:, 1:6:], annot=True, linewidths=.5)

You can use

slack://

in order to open the Slack desktop application. For example, on mac, I've run:

open slack://

from the terminal and it opens the Mac desktop Slack application. Still, I didn't figure out the URL that should be used for opening a certain team, channel or message.

Since I could not run the C executable that way, I wrote a simple shell script that does the following

cd /..path_to_shell_script
./c_executable_name

In the cron jobs list, I call the shell script.

I followed the solution above from Jonas and it worked well until I needed to add a second column. What I found is that when making the columns visible again Oracle does not necessarily set them visible in the order listed in the statement.

To demonstrate this follow Jonas' example above. As he showed, once the steps are complete the table is in the order that you'd expect. Things then break down when you add another column as shown below:

Example (continued from Jonas'):

Add another column which is to be inserted before column C.

ALTER TABLE t ADD (b2 INT);

Use the technique demonstrated above to move the newly added B2 column before column C.

ALTER TABLE t MODIFY (c INVISIBLE, d INVISIBLE, e INVISIBLE);
ALTER TABLE t MODIFY (c VISIBLE, d VISIBLE, e VISIBLE);

DESCRIBE t;

Name
----
A
B
B2
D
E
C

As shown above column C has moved to the end. It seems that the ALTER TABLE statement above processed the columns in the order D, E, C rather than in the order specified in the statement (perhaps in physical table order). To ensure that the column is placed where desired it is necessary to make the columns visible one by one in the desired order.

ALTER TABLE t MODIFY (c INVISIBLE, d INVISIBLE, e INVISIBLE);
ALTER TABLE t MODIFY c VISIBLE;
ALTER TABLE t MODIFY d VISIBLE;
ALTER TABLE t MODIFY e VISIBLE;

DESCRIBE t;

Name
----
A
B
B2
C
D
E

just do this in your manifest file in your activity tag

android:theme="@style/Theme.AppCompat.Light.NoActionBar"

You can use json module of python to pretty print.

>>> import json
>>> print json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4)
{
    "4": 5,
    "6": 7
}

So, in your case

>>> print json.dumps(json_output, indent=4)

if(!str.trim()){
  console.log('string is empty or only contains spaces');
}

Removing the whitespace from a string can be done using String#trim().

To check if a string is null or undefined, one can check if the string itself is falsey, in which case it is null, undefined, or an empty string. This first check is necessary, as attempting to invoke methods on null or undefined will result in an error. To check if it contains only spaces, one can check if the string is falsey after trimming, which means that it is an empty string at that point.

if(!str || !str.trim()){
   //str is null, undefined, or contains only spaces
}

This can be simplified using the optional chaining operator.

if(!str?.trim()){
   //str is null, undefined, or contains only spaces
}

If you are certain that the variable will be a string, only the second check is necessary.

if(!str.trim()){
   console.log("str is empty or contains only spaces");
}

My solution:

Object.prototype.__index=function(index)
                         {var i=-1;
                          for (var key in this)
                              {if (this.hasOwnProperty(key) && typeof(this[key])!=='function')
                                  {++i;
                                  }
                               if (i>=index)
                                  {return this[key];
                                  }
                              }
                          return null;
                         }
aObj={'jack':3, 'peter':4, '5':'col', 'kk':function(){alert('hell');}, 'till':'ding'};
alert(aObj.__index(4));

 // SQL: SELECT * FROM table LIMIT start, maxRows;

Query q = session.createQuery("FROM table");
q.setFirstResult(start);
q.setMaxResults(maxRows);

I too found this perplexing. I'm running Ubuntu 18 and found the following: If the cv.imshow window has focus, you'll get one set of values in the terminal - like the ASCII values discussed above.

If the Terminal has focus, you'll see different values. IE- you'll see "a" when you press the a key (instead of ASCII value 97) and "^]" instead of "27" when you press Escape.

I didn't see the 6 digit numbers mentioned above in either case and I used similar code. It seems the value for waitKey is the polling period in mS. The dots illustrate this.

Run this snippet and press keys while focus is on the test image, then click on the terminal window and press the same keys.

    import cv2
    img = cv2.imread('test.jpg') 
    cv2.imshow('Your test image', img)

    while(1):
      k = cv2.waitKey(300)
      if k == 27:
        break
      elif k==-1:
       print "."
       continue
      else:
        print k 

What is the main difference. Like memory or performance implications

The difference between static and dynamic resources comes when the underlying object changes. If your Brush defined in the Resources collection were accessed in code and set to a different object instance, Rectangle will not detect this change.

Static Resources retrieved once by referencing element and used for the lifetime of the resources. Whereas, DynamicResources retrieve every time they are used.

The downside of Dynamic resources is that they tend to decrease application performance.

Are there rules in WPF like "brushes are always static" and "templates are always dynamic" etc.?

The best practice is to use Static Resources unless there is a specific reason like you want to change resource in the code behind dynamically. Another example of instance in which you would want t to use dynamic resoruces include when you use the SystemBrushes, SystenFonts and System Parameters.

You want to add libraries to your project and in doing so you have two options as you yourself identified:

Compile-time libraries are libraries which is needed to compile your application. They are not included when your application is assembled (e.g., into a war-file). Libraries of this kind must be provided by the container running your project.

This is useful in situation when you want to vary API and implementation, or when the library is supplied by the container (which is typically the case with javax.servlet which is required to compile but provided by the application server, e.g., Apache Tomcat).

Run-time libraries are libraries which is needed both for compilation and when running your project. This is probably what you want in most cases. If for instance your project is packaged into a war/ear, then these libraries will be included in the package.

As for the other alernatives you have either global libraries using Library Manageror jdk libraries. The latter is simply your regular java libraries, while the former is just a way for your to store a set of libraries under a common name. For all your future projects, instead of manually assigning the libraries you can simply select to import them from your Library Manager.

I think a readable way of doing that is:

$days_ago = date('Y-m-d', strtotime('-5 days', strtotime('2008-12-02')));

I had trouble understanding the answers so I'm assuming any other beginner like myself might have the same problem as me.

My solution does the same as the top answer but hopefully a little more clear and easy to understand for beginners or people just having trouble understanding in general.

To create a function with a completion handler

func yourFunctionName(finished: () -> Void) {

     print("Doing something!")

     finished()

}

to use the function

     override func viewDidLoad() {

          yourFunctionName {

          //do something here after running your function
           print("Tada!!!!")
          }

    }

Your output will be

Doing something

Tada!!!

Hope this helps!

For window if you download scr folder say apache-jmeter-5.3_src then you won't find ApacheJMeter.jar file insider bin folder.One might have downloaded zip file under source section. Form this link download zip file under binaries section and click on ApacheJMeter.jar from bin folder https://jmeter.apache.org/download_jmeter.cgi

By combining all the given answers, this method should work on all environments:

public static void clearConsole() {
    try {
        if (System.getProperty("os.name").contains("Windows")) {
            new ProcessBuilder("cmd", "/c", "cls").inheritIO().start().waitFor();
        }
        else {
            System.out.print("\033\143");
        }
    } catch (IOException | InterruptedException ex) {}
}

Elements that are floated are taken out of the normal flow layout, and block elements, such as DIV's, no longer span the width of their parent. The rules change in this situation. Instead of reinventing the wheel, check out this site for some possible solutions to create the two column layout you are after: http://www.maxdesign.com.au/presentation/page_layouts/

Specifically, the "Liquid Two-Column layout".

Cheers!

Also update the manifest file as to delete an sms you need write permissions.

<uses-permission android:name="android.permission.WRITE_SMS"/>

Comparing the O(n) time solution with the "constant time" O(1) solution provided in other answers goes to show that if the O(n) algorithm is fast enough, n may have to get very large before it is slower than a slow O(1).

The strings version is approx. 60% faster than the "maths" version for numbers of 20 or fewer digits. They become closer only when then number of digits approaches 200 digits

# the "maths" version
import math

def first_n_digits1(num, n):
    return num // 10 ** (int(math.log(num, 10)) - n + 1)

%timeit first_n_digits1(34523452452, 2)
1.21 µs ± 75 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

%timeit first_n_digits1(34523452452, 8)
1.24 µs ± 47.5 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

# 22 digits
%timeit first_n_digits1(3423234239472523452452, 2)
1.33 µs ± 59.4 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

%timeit first_n_digits1(3423234239472523452452, 15)
1.23 µs ± 61.2 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

# 196 digits
%timeit first_n_digits1(3423234239472523409283475908723908723409872390871243908172340987123409871234012089172340987734507612340981344509873123401234670350981234098123140987314509812734091823509871345109871234098172340987125988123452452, 39)
1.86 µs ± 21.8 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)

# The "string" verions
def first_n_digits2(num, n):
    return int(str(num)[:n])

%timeit first_n_digits2(34523452452, 2)
744 ns ± 28.1 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

%timeit first_n_digits2(34523452452, 8)
768 ns ± 42.7 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

# 22 digits
%timeit first_n_digits2(3423234239472523452452, 2)
767 ns ± 33.6 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

%timeit first_n_digits2(3423234239472523452452, 15)
830 ns ± 55.1 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

# 196 digits
%timeit first_n_digits2(3423234239472523409283475908723908723409872390871243908098712340987123401208917234098773450761234098134450987312340123467035098123409812314098734091823509871345109871234098172340987125988123452452, 39)
1.87 µs ± 140 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)

If you want to create a small dots, just use icon from font awesome.

fa fa-circle

First give the link of logout.php page in that logout button.In that page make the code which is given below:

Here is the code:

<?php
 session_start();
 session_destroy();
?>

When the session has started, the session for the last/current user has been started, so don't need to declare the username. It will be deleted automatically by the session_destroy method.

I use this code. It makes sure that file gets created if it doesn't exist and also adds bit of error checks.

static void appendLineToFile(string filepath, string line)
{
    std::ofstream file;
    //can't enable exception now because of gcc bug that raises ios_base::failure with useless message
    //file.exceptions(file.exceptions() | std::ios::failbit);
    file.open(filepath, std::ios::out | std::ios::app);
    if (file.fail())
        throw std::ios_base::failure(std::strerror(errno));

    //make sure write fails with exception if something is wrong
    file.exceptions(file.exceptions() | std::ios::failbit | std::ifstream::badbit);

    file << line << std::endl;
}

You have to bind your event handlers to correct context (this):

onChange={this.setAuthorState.bind(this)}

If elem.find() is not working for you, check that you are including JQuery script before angular script....

xcopy "$(TargetDir)*$(TargetExt)" "$(SolutionDir)\Scripts\MigrationScripts\Library\" /F /R /Y /I

/F – Displays full source & target file names

/R – This will overwrite read-only files

/Y – Suppresses prompting to overwrite an existing file(s)

/I – Assumes that destination is directory (but must ends with )

A little trick – in target you must end with character \ to tell xcopy that target is directory and not file!

PowerShell has built-in XML and XPath functions. You can use the Select-Xml cmdlet with an XPath query to select nodes from XML object and then .Node.'#text' to access node value.

[xml]$xml = Get-Content $serviceStatePath
$nodes = Select-Xml "//Object[Property/@Name='ServiceState' and Property='Running']/Property[@Name='DisplayName']" $xml
$nodes | ForEach-Object {$_.Node.'#text'}

Or shorter

[xml]$xml = Get-Content $serviceStatePath
Select-Xml "//Object[Property/@Name='ServiceState' and Property='Running']/Property[@Name='DisplayName']" $xml |
  % {$_.Node.'#text'}

I was also having the same problem. I tried the following and it's working for me now:
Please try the following steps:

Go to..

File > Settings > Appearance & Behavior > System Settings > HTTP Proxy [Under IDE Settings] Enable following option Auto-detect proxy settings

On Mac it's under:

Android Studio > Preferences > Appearance & Behaviour... etc

you can also use the test connection button and check with google.com to see if it works or not.

From the jQuery page about .hide():

"The matched elements will be hidden immediately, with no animation. This is roughly equivalent to calling .css('display', 'none'), except that the value of the display property is saved in jQuery's data cache so that display can later be restored to its initial value. If an element has a display value of inline, then is hidden and shown, it will once again be displayed inline."

So if it's important that you're able to revert to the previous value of display, you'd better use hide() because that way the previous state is remembered. Apart from that there's no difference.

$(function() {_x000D_
    $('.hide').click(function(){_x000D_
        $('.toggle').hide();_x000D_
        setDisplayValue();_x000D_
    });_x000D_
    $('.show').click(function(){_x000D_
        $('.toggle').show();_x000D_
        setDisplayValue();_x000D_
    });_x000D_
});_x000D_
_x000D_
function setDisplayValue() {_x000D_
    var display = $('.toggle')[0].style.display;_x000D_
    $('.displayvalue').text(display);_x000D_
}

div {_x000D_
    display: table-cell;_x000D_
    border: 1px solid;_x000D_
    padding: 5px;_x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<p>_x000D_
    <button class="hide">Hide</button>_x000D_
    <button class="show">Show</button>_x000D_
</p>_x000D_
_x000D_
<div class="toggle">Lorem Ipsum</div>_x000D_
_x000D_
<p>_x000D_
    The display value of the div is:_x000D_
    <span class="displayvalue"></span>_x000D_
</p>

Try:

td, th {
  white-space: nowrap;
  overflow: hidden;
}

Another solution is to actually create or login the user automatically if you already have the credentials handy. Here is how I do it using Plain JS.

function loginToFirebase(callback)
{
    let email = '[email protected]';
    let password = 'xxxxxxxxxxxxxx';
    let config =
    {
        apiKey: "xxx",
        authDomain: "xxxxx.firebaseapp.com",
        projectId: "xxx-xxx",
        databaseURL: "https://xxx-xxx.firebaseio.com",
        storageBucket: "gs://xx-xx.appspot.com",
    };

    if (!firebase.apps.length)
    {
        firebase.initializeApp(config);
    }

    let database = firebase.database();
    let storage = firebase.storage();

    loginFirebaseUser(email, password, callback);
}

function loginFirebaseUser(email, password, callback)
{
    console.log('Logging in Firebase User');

    firebase.auth().signInWithEmailAndPassword(email, password)
        .then(function ()
        {
            if (callback)
            {
                callback();
            }
        })
        .catch(function(login_error)
        {
            let loginErrorCode = login_error.code;
            let loginErrorMessage = login_error.message;

            console.log(loginErrorCode);
            console.log(loginErrorMessage);

            if (loginErrorCode === 'auth/user-not-found')
            {
                createFirebaseUser(email, password, callback)
            }
        });
}

function createFirebaseUser(email, password, callback)
{
    console.log('Creating Firebase User');

    firebase.auth().createUserWithEmailAndPassword(email, password)
        .then(function ()
        {
            if (callback)
            {
                callback();
            }
        })
        .catch(function(create_error)
        {
            let createErrorCode = create_error.code;
            let createErrorMessage = create_error.message;

            console.log(createErrorCode);
            console.log(createErrorMessage);
        });
}

You are not set the startup project so only this error occur. Mostly this problem occur when your working with more project in the single solution.

First right click on your project and "Set as Start Up Project" and/or right click on the start up file inside the sleeted project and click "Set StartUp File".

A simple answer would be (26 characters):

String.fromCharCode(97+n);

If space is precious you could do the following (20 characters):

(10+n).toString(36);

Think about what you could do with all those extra bytes!

How this works is you convert the number to base 36, so you have the following characters:

0123456789abcdefghijklmnopqrstuvwxyz
^         ^
n        n+10

By offsetting by 10 the characters start at a instead of 0.

Not entirely sure about how fast running the two different examples client-side would compare though.

This way:

db.collection_name.find().toArray().then(...function...)

Based off of @Mike Sherrill Cat Recall's answer, this is what worked for me:

ALTER TABLE "Children"
DROP CONSTRAINT "Children_parentId_fkey",
ADD CONSTRAINT "Children_parentId_fkey"
  FOREIGN KEY ("parentId")
  REFERENCES "Parent"(id)
  ON DELETE CASCADE;

After years, I want to add another approach by using a view engine in Express.js

var fs = require('fs');

app.get('/test', function(req, res, next) {
    var html = fs.readFileSync('./html/test.html', 'utf8')
    res.render('test', { html: html })
    // or res.send(html)
})

Then, do that in your views/test if you choose res.render method at the above code (I'm writing in EJS format):

<%- locals.html %>

That's all.

In this way, you don't need to break your View Engine arrangements.

Without conflicting with other good answers, I will add a bit of my example.

What exactly C++ Compiler does: it mangles the names in the compilation process, hence we require telling the compiler to treat C implementation specially.

When we are making C++ classes and adding extern "C", we're telling our C++ compiler that we are using C calling convention.

Reason (we are calling C implementation from C++): either we want to call C function from C++ or calling C++ function from C (C++ classes ... etc do not work in C).

It's essentially the access protection of the public and protected members of the base class in the derived class. With public inheritance, the derived class can see public and protected members of the base. With private inheritance, it can't. With protected, the derived class and any classes derived from that can see them.

I did this on a windows computer and it worked perfectly!

Turn on USB Tethering in your mobile. Type ipconfig in the command prompt in your computer and find the ipv4 for "ethernet adapter local area connection x" (mostly the first one) Now go to your mobile browser, type that ipv4 with the port number of your web application. eg:- 192.168.40.142:1342

It worked with those simple steps!

if you're goal is to reset EVERYTHING then @Björn's answer should be your goal but applied as:

* {
  padding: initial;
}

if this is loaded after your original reset.css should have the same weight and will rely on each browser's default padding as initial value.

I am using lambda with Zappa; I am sending data with POST in json format:

My code for basic_lambda_pure.py is:

import time
import requests
import json
def my_handler(event, context):
    print("Received event: " + json.dumps(event, indent=2))
    print("Log stream name:", context.log_stream_name)
    print("Log group name:",  context.log_group_name)
    print("Request ID:", context.aws_request_id)
    print("Mem. limits(MB):", context.memory_limit_in_mb)
    # Code will execute quickly, so we add a 1 second intentional delay so you can see that in time remaining value.
    print("Time remaining (MS):", context.get_remaining_time_in_millis())

    if event["httpMethod"] == "GET":
        hub_mode = event["queryStringParameters"]["hub.mode"]
        hub_challenge = event["queryStringParameters"]["hub.challenge"]
        hub_verify_token = event["queryStringParameters"]["hub.verify_token"]
        return {'statusCode': '200', 'body': hub_challenge, 'headers': 'Content-Type': 'application/json'}}

    if event["httpMethod"] == "post":
        token = "xxxx"
    params = {
        "access_token": token
    }
    headers = {
        "Content-Type": "application/json"
    }
        _data = {"recipient": {"id": 1459299024159359}}
        _data.update({"message": {"text": "text"}})
        data = json.dumps(_data)
        r = requests.post("https://graph.facebook.com/v2.9/me/messages",params=params, headers=headers, data=data, timeout=2)
        return {'statusCode': '200', 'body': "ok", 'headers': {'Content-Type': 'application/json'}}

I got the next json response:

{
"resource": "/",
"path": "/",
"httpMethod": "POST",
"headers": {
"Accept": "*/*",
"Accept-Encoding": "deflate, gzip",
"CloudFront-Forwarded-Proto": "https",
"CloudFront-Is-Desktop-Viewer": "true",
"CloudFront-Is-Mobile-Viewer": "false",
"CloudFront-Is-SmartTV-Viewer": "false",
"CloudFront-Is-Tablet-Viewer": "false",
"CloudFront-Viewer-Country": "US",
"Content-Type": "application/json",
"Host": "ox53v9d8ug.execute-api.us-east-1.amazonaws.com",
"Via": "1.1 f1836a6a7245cc3f6e190d259a0d9273.cloudfront.net (CloudFront)",
"X-Amz-Cf-Id": "LVcBZU-YqklHty7Ii3NRFOqVXJJEr7xXQdxAtFP46tMewFpJsQlD2Q==",
"X-Amzn-Trace-Id": "Root=1-59ec25c6-1018575e4483a16666d6f5c5",
"X-Forwarded-For": "69.171.225.87, 52.46.17.84",
"X-Forwarded-Port": "443",
"X-Forwarded-Proto": "https",
"X-Hub-Signature": "sha1=10504e2878e56ea6776dfbeae807de263772e9f2"
},
"queryStringParameters": null,
"pathParameters": null,
"stageVariables": null,
"requestContext": {
"path": "/dev",
"accountId": "001513791584",
"resourceId": "i6d2tyihx7",
"stage": "dev",
"requestId": "d58c5804-b6e5-11e7-8761-a9efcf8a8121",
"identity": {
"cognitoIdentityPoolId": null,
"accountId": null,
"cognitoIdentityId": null,
"caller": null,
"apiKey": "",
"sourceIp": "69.171.225.87",
"accessKey": null,
"cognitoAuthenticationType": null,
"cognitoAuthenticationProvider": null,
"userArn": null,
"userAgent": null,
"user": null
},
"resourcePath": "/",
"httpMethod": "POST",
"apiId": "ox53v9d8ug"
},
"body": "eyJvYmplY3QiOiJwYWdlIiwiZW50cnkiOlt7ImlkIjoiMTA3OTk2NDk2NTUxMDM1IiwidGltZSI6MTUwODY0ODM5MDE5NCwibWVzc2FnaW5nIjpbeyJzZW5kZXIiOnsiaWQiOiIxNDAzMDY4MDI5ODExODY1In0sInJlY2lwaWVudCI6eyJpZCI6IjEwNzk5NjQ5NjU1MTAzNSJ9LCJ0aW1lc3RhbXAiOjE1MDg2NDgzODk1NTUsIm1lc3NhZ2UiOnsibWlkIjoibWlkLiRjQUFBNHo5RmFDckJsYzdqVHMxZlFuT1daNXFaQyIsInNlcSI6MTY0MDAsInRleHQiOiJob2xhIn19XX1dfQ==",
"isBase64Encoded": true
}

my data was on body key, but is code64 encoded, How can I know this? I saw the key isBase64Encoded

I copy the value for body key and decode with This tool and "eureka", I get the values.

I hope this help you. :)

This doesn't need jquery, doesn't need to load the script async, needs no timer nor to have the loaded script set a value. I've tested it in FF, Chrome, and Safari.

<script>
        function loadScript(src) {
          return new Promise(function(resolve, reject) {

            let s = window.document.createElement("SCRIPT");

            s.onload = () => resolve(s);
            s.onerror = () => reject(new Error(src));
            s.src = src;
            // don't bounce to global handler on 404.
            s.addEventListener('error', function() {});
            window.document.head.append(s);
          }); 
        }   
                        
        let successCallback = (result) => {
          console.log(scriptUrl + " loaded.");
        }   
                        
        let failureCallback = (error) => {
          console.log("load failed: " + error.message);
        }   
                        
        loadScript(scriptUrl).then(successCallback, failureCallback);
</script>

Use a library instead

We don't have to reinvent the wheel. Just use a library to save the time and headache.

js-base64

https://github.com/dankogai/js-base64 is good and I confirm it supports unicode very well.

Base64.encode('dankogai');  // ZGFua29nYWk=
Base64.encode('???');    // 5bCP6aO85by+
Base64.encodeURI('???'); // 5bCP6aO85by-

Base64.decode('ZGFua29nYWk=');  // dankogai
Base64.decode('5bCP6aO85by+');  // ???
// note .decodeURI() is unnecessary since it accepts both flavors
Base64.decode('5bCP6aO85by-');  // ???

Strange behaviour which I was experienced also. So for me "return false" did the trick.

        $( '#selector' ).on( 'click', function() {
            //code
            return false;
        });

You can also simply use

WORKDIR /var/www/app

It will automatically create the folders if they don't exist.

Then switch back to the directory you need to be in.

Because your question is phrased regarding your error message and not whatever your function is trying to accomplish, I will address the error.

- is the 'binary operator' your error is referencing, and either CurrentDay or MA (or both) are non-numeric.

A binary operation is a calculation that takes two values (operands) and produces another value (see wikipedia for more). + is one such operator: "1 + 1" takes two operands (1 and 1) and produces another value (2). Note that the produced value isn't necessarily different from the operands (e.g., 1 + 0 = 1).

R only knows how to apply + (and other binary operators, such as -) to numeric arguments:

> 1 + 1
[1] 2
> 1 + 'one'
Error in 1 + "one" : non-numeric argument to binary operator

When you see that error message, it means that you are (or the function you're calling is) trying to perform a binary operation with something that isn't a number.

EDIT:

Your error lies in the use of [ instead of [[. Because Day is a list, subsetting with [ will return a list, not a numeric vector. [[, however, returns an object of the class of the item contained in the list:

> Day <- Transaction(1, 2)["b"]
> class(Day)
[1] "list"
> Day + 1
Error in Day + 1 : non-numeric argument to binary operator

> Day2 <- Transaction(1, 2)[["b"]]
> class(Day2)
[1] "numeric"
> Day2 + 1
[1] 3

Transaction, as you've defined it, returns a list of two vectors. Above, Day is a list contain one vector. Day2, however, is simply a vector.

Another option (to avoid any forced push which can be problematic for other contributors) is to:

• put your new commits in a dedicated branch
• reset your master on origin/master
• merge your dedicated branch to master, always keeping commits from the dedicated branch (meaning creating new revisions on top of master which will mirror your dedicated branch).
  See "git command for making one branch like another" for strategies to simulate a git merge --strategy=theirs.

That way, you can push master to remote without having to force anything.

use ggguG

gg: goes to the first line.

gu: change to lowercase.

G: goes to the last line.

Try the DATENAME() function:

select [date_created]
from table
where DATENAME(WEEKDAY, [date_created]) <> 'Saturday'
  and DATENAME(WEEKDAY, [date_created]) <> 'Sunday'

Let:

>>> n = 1000
>>> x = np.arange(n)
>>> reps = 10000

Zero-cost allocations

A view does not take any additional memory. Thus, these declarations are instantaneous:

# New axis
x[np.newaxis, ...]

# Broadcast to specific shape
np.broadcast_to(x, (reps, n))

Forced allocation

If you want force the contents to reside in memory:

>>> %timeit np.array(np.broadcast_to(x, (reps, n)))
10.2 ms ± 62.3 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

>>> %timeit np.repeat(x[np.newaxis, :], reps, axis=0)
9.88 ms ± 52.4 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

>>> %timeit np.tile(x, (reps, 1))
9.97 ms ± 77.3 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

All three methods are roughly the same speed.

Computation

>>> a = np.arange(reps * n).reshape(reps, n)
>>> x_tiled = np.tile(x, (reps, 1))

>>> %timeit np.broadcast_to(x, (reps, n)) * a
17.1 ms ± 284 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

>>> %timeit x[np.newaxis, :] * a
17.5 ms ± 300 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

>>> %timeit x_tiled * a
17.6 ms ± 240 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

All three methods are roughly the same speed.

Conclusion

If you want to replicate before a computation, consider using one of the "zero-cost allocation" methods. You won't suffer the performance penalty of "forced allocation".

An int array without elements is not necessarily null. It will only be null if it hasn't been allocated yet. See this tutorial for more information about Java arrays.

You can test the array's length:

void foo(int[] data)
{
  if(data.length == 0)
    return;
}

You can invoke MySQL show status command

show status like 'Conn%';

For more info read Show open database connections

A foreign key is a constraint, a relationship between two tables - that has nothing to do with an index per se.

But it is a known fact that it makes a lot of sense to index all the columns that are part of any foreign key relationship, because through a FK-relationship, you'll often need to lookup a relating table and extract certain rows based on a single value or a range of values.

So it makes good sense to index any columns involved in a FK, but a FK per se is not an index.

Check out Kimberly Tripp's excellent article "When did SQL Server stop putting indexes on Foreign Key columns?".

None of the above changes worked for me. Please see my worked configuration below:

Dependencies:

            <dependency>
                <groupId>org.apache.cxf</groupId>
                <artifactId>cxf-rt-frontend-jaxrs</artifactId>
                <version>3.3.2</version>
            </dependency>
            <dependency>
                <groupId>org.apache.cxf</groupId>
                <artifactId>cxf-rt-rs-extension-providers</artifactId>
                <version>3.3.2</version>
            </dependency>
            <dependency>
                <groupId>org.codehaus.jackson</groupId>
                <artifactId>jackson-jaxrs</artifactId>
                <version>1.9.13</version>
            </dependency>
            <dependency>
                <groupId>org.codehaus.jettison</groupId>
                <artifactId>jettison</artifactId>
                <version>1.4.0</version>
            </dependency>

web.xml:

     <servlet>
        <servlet-name>cfxServlet</servlet-name>
        <servlet-class>org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet</servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>com.MyApplication</param-value>
        </init-param>
        <init-param>
            <param-name>jaxrs.providers</param-name>
            <param-value>org.codehaus.jackson.jaxrs.JacksonJsonProvider</param-value>
        </init-param>
        <init-param>
            <param-name>jaxrs.extensions</param-name>
            <param-value> 
            json=application/json 
        </param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>cfxServlet</servlet-name>
        <url-pattern>/v1/*</url-pattern>
    </servlet-mapping>

Enjoy coding .. :)

We can use Object.requireNonNull static method of Object class. Implementation is below

public void someMethod(SomeClass obj) {
    Objects.requireNonNull(obj, "Validation error, obj cannot be null");
}

Set the appended div to be hidden initially through css visibility:hidden.

Or change it to height: 0.1em; orso, minimal size of anything displayable is 1px.

The 0.05 em you are using means, get the current font size in pixels of this elements and give me 5% of it. Which for 12 pixels returns 0.6 pixels which is too little to display. if you would turn up the font size of the div to atleast 20pixels it would display fine. I suppose Chrome doesnt round up sizes to be atleast 1pixel where other browsers do.

simple we can also use for an imageview

    imageView.setColorFilter(ContextCompat.getColor(context,
R.color.COLOR_YOUR_COLOR));

If you don't want to strip the tags completely and keep the content inside the tags, you can use the DOMDocument and extract the textContent of the root node like this:

function html2text($html) {
    $dom = new DOMDocument();
    $dom->loadHTML("<body>" . strip_tags($html, '<b><a><i><div><span><p>') . "</body>");
    $xpath = new DOMXPath($dom);
    $node = $xpath->query('body')->item(0);
    return $node->textContent; // text
}

$p = 'this is <b>test</b>. <p>how are <i>you?</i>. <a href="#">I\'m fine!</a></p>';
print html2text($p);
// this is test. how are you?. I'm fine!

One advantage of this approach is that it does not require any external packages.

this simple solution works for me

    final = pd.concat([df, rankingdf], axis=1, sort=False)

but you may need to drop some duplicate column first.

You need to switch single quotes ['] to double quotes ["] because of parse

if you are using data-order attribute on the table then use it like this data-order='[[1, "asc"]]'

int[] oldArray = {1,2,3,4,5};

    //new value
    int newValue = 10;

    //define the new array
    int[] newArray = new int[oldArray.length + 1];

    //copy values into new array
    for(int i=0;i < oldArray.length;i++)
        newArray[i] = oldArray[i];
    //another solution is to use 
    //System.arraycopy(oldArray, 0, newArray, 0, oldArray.length);

    //add new value to the new array
    newArray[newArray.length-1] = newValue;

    //copy the address to the old reference 
    //the old array values will be deleted by the Garbage Collector
    oldArray = newArray;

You can change your model method to property and use it in serializer with this approach.

class Foo(models.Model):
    . . .
    @property
    def my_field(self):
        return stuff
    . . .

class FooSerializer(ModelSerializer):
    my_field = serializers.ReadOnlyField(source='my_field')

    class Meta:
        model = Foo
        fields = ('my_field',)

Edit: With recent versions of rest framework (I tried 3.3.3), you don't need to change to property. Model method will just work fine.

It's been awhile since I've done anything with batch files but I think that the following works:

find /c "string" file
if %errorlevel% equ 1 goto notfound
echo found
goto done
:notfound
echo notfound
goto done
:done

This is really a proof of concept; clean up as it suits your needs. The key is that find returns an errorlevel of 1 if string is not in file. We branch to notfound in this case otherwise we handle the found case.

Just save the string to a temp variable and then use that in your expression:

var strItem = item.Key.ToString();

IQueryable<entity> pages = from p in context.pages
                           where  p.Serial == strItem
                           select p;

The problem arises because ToString() isn't really executed, it is turned into a MethodGroup and then parsed and translated to SQL. Since there is no ToString() equivalent, the expression fails.

Note:

Make sure you also check out Alex's answer regarding the SqlFunctions helper class that was added later. In many cases it can eliminate the need for the temporary variable.

In case you wish to keep the current version of angular, you can visit this version compatibility checker to check which version of angular-material is best for your current angular version. You can also check peer dependencies of angular-material using angular-material compatibility.

Two things I noticed (they may be mistakes from when you wrote it down though).

1. You missed a dot in the first example ( $('.navlink').click )
2. For filter to work, you have to return a value ( return $(this).data("selected")==true )

you can use setInterval() in javascript

<script>
//Call the yourAjaxCall() function every 1000 millisecond
setInterval("yourAjaxCall()",1000);
function yourAjaxCall(){...}
</script>

Assuming that all characters are alphabetic, you can do this:

From lowercase to uppercase:

// Uppercase letters. 
class UpperCase {  
  public static void main(String args[]) { 
    char ch;
    for(int i=0; i < 10; i++) { 
      ch = (char) ('a' + i);
      System.out.print(ch); 

      // This statement turns off the 6th bit.   
      ch = (char) ((int) ch & 65503); // ch is now uppercase
      System.out.print(ch + " ");  
    } 
  } 
}

From uppercase to lowercase:

// Lowercase letters. 
class LowerCase {  
  public static void main(String args[]) { 
    char ch;
    for(int i=0; i < 10; i++) { 
      ch = (char) ('A' + i);
      System.out.print(ch);
      ch = (char) ((int) ch | 32); // ch is now uppercase
      System.out.print(ch + " ");  
    } 
  } 
}

CharSequence is an interface and String is its one of the implementations other than StringBuilder, StringBuffer and many other.

So, just as you use InterfaceName i = new ItsImplementation(), you can use CharSequence cs = new String("string") or simply CharSequence cs = "string";

string.Join("", (from i in arr select i.ToString()).ToArray())

In the .NET 4.0 the string.Join can use an IEnumerable<string> directly:

string.Join("", from i in arr select i.ToString())

Use display:none/block, instead of visibility, and add a margin-top/bottom for the space you want to see ONLY when the inputs are shown

 function yesnoCheck() {
        if (document.getElementById('yesCheck').checked) {
           document.getElementById('ifYes').style.display = 'block';
        } else {
           document.getElementById('ifYes').style.display = 'none';
        }
    }

and your HTML line for the ifYes tag

<div id="ifYes" style="display:none;margin-top:3%;">If yes, explain:

Allowing all certificates is very powerful but it could also be dangerous. If you would like to only allow valid certificates plus some certain certificates it could be done like this.

using (var httpClientHandler = new HttpClientHandler())
{
    httpClientHandler.ServerCertificateCustomValidationCallback = (message, cert, chain, sslPolicyErrors) => {
        if (sslPolicyErrors == SslPolicyErrors.None)
        {
            return true;   //Is valid
        }

        if (cert.GetCertHashString() == "99E92D8447AEF30483B1D7527812C9B7B3A915A7")
        {
            return true;
        }
        return false;
    };
    using (var httpClient = new HttpClient(httpClientHandler))
    {
        var httpResponse = httpClient.GetAsync("https://example.com").Result;
    }
}

Original source:

https://stackoverflow.com/a/44140506/3850405

Swift 4.2 example:

let group = DispatchGroup.group(count: 2)
group.notify(queue: DispatchQueue.main) {
     self.renderingLine = false
     // all groups are done
}
DispatchQueue.main.async {
    self.renderTargetNode(floorPosition: targetPosition, animated: closedContour) {
        group.leave()
        // first done
    }
    self.renderCenterLine(position: targetPosition, animated: closedContour) {
        group.leave()
        // second done
    }
 }

Once changes has been committed it will not be able to delete. because commit's basic nature is not to delete.

Thing you can do (easy and safe method),

Interactive Rebase:

1) git rebase -i HEAD~2 #will show your recent 2 commits

2) Your commit will list like , Recent will appear at the bottom of the page LILO(last in Last Out)

Delete the last commit row entirely

3) save it by ctrl+X or ESC:wq

now your branch will updated without your last commit..

Check if you imported the header files of classes that are throwing this error.

You need to use [] to access elements of a dictionary. Not ()

  number_map = { 1: -3, 2: -2, 3: -1, 4: 1, 5: 2, 6: 3 }
input_str = raw_input("Enter something: ")
strikes = [number_map[int(x)] for x in input_str ]

Sounds like you are using Microsoft Visual C++. If that is the case, then the most possibility is that you don't compile your two.cpp with one.cpp (one.cpp is the implementation for one.h).

If you are from command line (cmd.exe), then try this first: cl -o two.exe one.cpp two.cpp

If you are from IDE, right click on the project name from Solution Explore. Then choose Add, Existing Item.... Add one.cpp into your project.

Not sure how to explain this but I ran into something similar today. Not being able to set .user:first-of-type{} while .user:last-of-type{} worked fine. This was fixed after I wrapped them inside a div without any class or styling:

https://codepen.io/adrianTNT/pen/WgEpbE

<style>
.user{
  display:block;
  background-color:#FFCC00;
}

.user:first-of-type{
  background-color:#FF0000;
}
</style>

<p>Not working while this P additional tag exists</p>

<p class="user">A</p>
<p class="user">B</p>
<p class="user">C</p>

<p>Working while inside a div:</p>

<div>
<p class="user">A</p>
<p class="user">B</p>
<p class="user">C</p>
</div>

If you are offline and have untared the package, you can use command prompt.

Navigate to the untared folder and run:

python setup.py install

Input elements do behave differently from other elements, which would do just about what you want if you give them float: left (see http://jsfiddle.net/hEvYj/5/). I do not think that is possible without calculating it in some way with JavaScript (i.e. add 5px to the width per letter in the box).

Updated:

<build> 
  <plugins> 
    <plugin> 
    <artifactId>maven-dependency-plugin</artifactId> 
    <executions> 
      <execution> 
        <phase>install</phase> 
          <goals> 
            <goal>copy-dependencies</goal> 
          </goals> 
          <configuration> 
             <outputDirectory>${project.build.directory}/lib</outputDirectory> 
          </configuration> 
        </execution> 
      </executions> 
    </plugin> 
  </plugins> 
</build> 

If you play the video as a playlist and then single out that video you can get it without ads. Here is what I have done: https://www.youtube.com/v/VIDEO_ID?playlist=VIDEO_ID&autoplay=1&rel=0

You can add the following code:

this.ActiveControl = null;  //this = form

If you cannot use TRUNCATE (e.g. because of foreign key constraints) you can use an alter table after deleting all rows to restart the auto_increment:

ALTER TABLE mytable AUTO_INCREMENT = 1

Use LINQ Aggregate method to convert array of integers to a comma separated string

var intArray = new []{1,2,3,4};
string concatedString = intArray.Aggregate((a, b) =>Convert.ToString(a) + "," +Convert.ToString( b));
Response.Write(concatedString);

output will be

1,2,3,4

This is one of the solution you can use if you have not .net 4 installed.

In your Jenkins installation directory there is a jenkins.xml, where you can set various options. Add the parameter -Xmx with the size you want to the arguments-tag (or increase the size if its already there).

To convert the string into a date object:

from datetime import date, datetime

date_string = "01/12/2011"
date_object = date(*map(int, reversed(date_string.split("/"))))
assert date_object == datetime.strptime(date_string, "%d/%m/%Y").date()

The way to convert the date object into POSIX timestamp depends on timezone. From Converting datetime.date to UTC timestamp in Python:

• date object represents midnight in UTC

  import calendar
  
  timestamp1 = calendar.timegm(utc_date.timetuple())
  timestamp2 = (utc_date.toordinal() - date(1970, 1, 1).toordinal()) * 24*60*60
  assert timestamp1 == timestamp2
  

• date object represents midnight in local time

  import time
  
  timestamp3 = time.mktime(local_date.timetuple())
  assert timestamp3 != timestamp1 or (time.gmtime() == time.localtime())
  

The timestamps are different unless midnight in UTC and in local time is the same time instance.

It's probably worth mentioning that for http/https some people proxy their browser traffic through Burp/ZAP or another intercepting "attack proxy". A thread that covers options for this on Android devices can be found here: https://android.stackexchange.com/questions/32366/which-browser-does-support-proxies

To comment/uncomment one line, use: Ctrl + /.

To comment/uncomment a block, use: Ctrl + Shift + /.

1.Very Simple Code to iterate datatable and get columns in list.

2.code ==>>>

 foreach (DataColumn dataColumn in dataTable.Columns)
 {
    var list = dataTable.Rows.OfType<DataRow>()
     .Select(dataRow => dataRow.Field<string> 
       (dataColumn.ToString())).ToList();
 }

If you can look ahead but back, you could reverse the string first and then do a lookahead. Some more work will need to be done, of course.

Official document of Crypto++ AES is a good start. And from my archive, a basic implementation of AES is as follows:

Please refer here with more explanation, I recommend you first understand the algorithm and then try to understand each line step by step.

#include <iostream>
#include <iomanip>

#include "modes.h"
#include "aes.h"
#include "filters.h"

int main(int argc, char* argv[]) {

    //Key and IV setup
    //AES encryption uses a secret key of a variable length (128-bit, 196-bit or 256-   
    //bit). This key is secretly exchanged between two parties before communication   
    //begins. DEFAULT_KEYLENGTH= 16 bytes
    CryptoPP::byte key[ CryptoPP::AES::DEFAULT_KEYLENGTH ], iv[ CryptoPP::AES::BLOCKSIZE ];
    memset( key, 0x00, CryptoPP::AES::DEFAULT_KEYLENGTH );
    memset( iv, 0x00, CryptoPP::AES::BLOCKSIZE );

    //
    // String and Sink setup
    //
    std::string plaintext = "Now is the time for all good men to come to the aide...";
    std::string ciphertext;
    std::string decryptedtext;

    //
    // Dump Plain Text
    //
    std::cout << "Plain Text (" << plaintext.size() << " bytes)" << std::endl;
    std::cout << plaintext;
    std::cout << std::endl << std::endl;

    //
    // Create Cipher Text
    //
    CryptoPP::AES::Encryption aesEncryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
    CryptoPP::CBC_Mode_ExternalCipher::Encryption cbcEncryption( aesEncryption, iv );

    CryptoPP::StreamTransformationFilter stfEncryptor(cbcEncryption, new CryptoPP::StringSink( ciphertext ) );
    stfEncryptor.Put( reinterpret_cast<const unsigned char*>( plaintext.c_str() ), plaintext.length() );
    stfEncryptor.MessageEnd();

    //
    // Dump Cipher Text
    //
    std::cout << "Cipher Text (" << ciphertext.size() << " bytes)" << std::endl;

    for( int i = 0; i < ciphertext.size(); i++ ) {

        std::cout << "0x" << std::hex << (0xFF & static_cast<CryptoPP::byte>(ciphertext[i])) << " ";
    }

    std::cout << std::endl << std::endl;

    //
    // Decrypt
    //
    CryptoPP::AES::Decryption aesDecryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
    CryptoPP::CBC_Mode_ExternalCipher::Decryption cbcDecryption( aesDecryption, iv );

    CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new CryptoPP::StringSink( decryptedtext ) );
    stfDecryptor.Put( reinterpret_cast<const unsigned char*>( ciphertext.c_str() ), ciphertext.size() );
    stfDecryptor.MessageEnd();

    //
    // Dump Decrypted Text
    //
    std::cout << "Decrypted Text: " << std::endl;
    std::cout << decryptedtext;
    std::cout << std::endl << std::endl;

    return 0;
}

For installation details :

• How do I install Crypto++ in Visual Studio 2010 Windows 7?
• *nix environment
• For Ubuntu I did:

sudo apt-get install libcrypto++-dev libcrypto++-doc libcrypto++-utils

You need to specify both source and destination, and if you want to copy directories you should look at the -r option.

So to recursively copy /home/user/whatever from remote server to your current directory:

scp -pr user@remoteserver:whatever .

***LOGIN script that doesnt link to a database or external file. Good for a global password -

Place on Login form page - place this at the top of the login page - above everything else***

<?php

if(isset($_POST['Login'])){

if(strtolower($_POST["username"])=="ChangeThis" && $_POST["password"]=="ChangeThis"){
session_start();
$_SESSION['logged_in'] = TRUE;
header("Location: ./YourPageAfterLogin.php");

}else {
$error= "Login failed !";
}
}
//print"version3<br>";
//print"username=".$_POST["username"]."<br>";
//print"password=".$_POST["username"];
?>

*Login on following pages - Place this at the top of every page that needs to be protected by login. this checks the session and if a user name and password has *

<?php
session_start();
if(!isset($_SESSION['logged_in']) OR $_SESSION['logged_in'] != TRUE){

header("Location: ./YourLoginPage.php");
}
?>

In my case, I need to use comments for debug purposes just before the output of the JSON. So I put the debug information in the HTTP header, to avoid breaking the client:

header("My-Json-Comment: Yes, I know it's a workaround ;-) ");

I had the same need and was looking for recommendation or standard references and came across this thread. My current blacklist of characters that should be avoided in file and directory names are:

$CharactersInvalidForFileName = {
    "pound" -> "#",
    "left angle bracket" -> "<",
    "dollar sign" -> "$",
    "plus sign" -> "+",
    "percent" -> "%",
    "right angle bracket" -> ">",
    "exclamation point" -> "!",
    "backtick" -> "`",
    "ampersand" -> "&",
    "asterisk" -> "*",
    "single quotes" -> "“",
    "pipe" -> "|",
    "left bracket" -> "{",
    "question mark" -> "?",
    "double quotes" -> "”",
    "equal sign" -> "=",
    "right bracket" -> "}",
    "forward slash" -> "/",
    "colon" -> ":",
    "back slash" -> "\\",
    "lank spaces" -> "b",
    "at sign" -> "@"
};

To achieve similar functionality you could use anonymous inner classes.

If you were to define a interface Foo:

interface Foo {
    Object myFunc(Object arg);
}

Create a method bar which will receive a 'function pointer' as an argument:

public void bar(Foo foo) {
    // .....
    Object object = foo.myFunc(argValue);
    // .....
}

Finally call the method as follows:

bar(new Foo() {
    public Object myFunc(Object arg) {
        // Function code.
    }
}

I know that in order to use certain features of the gridview in .NET, you need a primary key in order for the gridview to know which row needs updating/deleting. General practice should be to have a primary key or primary key cluster. I personally prefer the former.

Or you have to rebuild the cv2 module for win 64bit.

If you want to post string as raw body in request

return Alamofire.request(.POST, "http://mywebsite.com/post-request" , parameters: [:], encoding: .Custom({
            (convertible, params) in
            let mutableRequest = convertible.URLRequest.copy() as! NSMutableURLRequest

            let data = ("myBodyString" as NSString).dataUsingEncoding(NSUTF8StringEncoding)
            mutableRequest.HTTPBody = data
            return (mutableRequest, nil)
        }))

It is worth noting that if you are returning server side data - you must supply the Data attribute even if there isn't any. It doesn't read the recordsTotal or recordsFiltered but relies on the count of the data object

I found a faster way to solve the problem, at least on realistically large datasets using: df.set_index(KEY).to_dict()[VALUE]

Proof on 50,000 rows:

df = pd.DataFrame(np.random.randint(32, 120, 100000).reshape(50000,2),columns=list('AB'))
df['A'] = df['A'].apply(chr)

%timeit dict(zip(df.A,df.B))
%timeit pd.Series(df.A.values,index=df.B).to_dict()
%timeit df.set_index('A').to_dict()['B']

Output:

100 loops, best of 3: 7.04 ms per loop  # WouterOvermeire
100 loops, best of 3: 9.83 ms per loop  # Jeff
100 loops, best of 3: 4.28 ms per loop  # Kikohs (me)

If you use Spring you can:

1) create a log4j configuration file, e.g. "/WEB-INF/classes/log4j-myapp.properties" DO NOT name it "log4j.properties"

Example:

log4j.rootLogger=ERROR, stdout, rollingFile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - <%m>%n

log4j.appender.rollingFile=org.apache.log4j.RollingFileAppender
log4j.appender.rollingFile.File=${myWebapp-instance-root}/WEB-INF/logs/application.log
log4j.appender.rollingFile.MaxFileSize=512KB
log4j.appender.rollingFile.MaxBackupIndex=10
log4j.appender.rollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.rollingFile.layout.ConversionPattern=%d %p [%c] - %m%n
log4j.appender.rollingFile.Encoding=UTF-8

We'll define "myWebapp-instance-root" later on point (3)

2) Specify config location in web.xml:

<context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/classes/log4j-myapp.properties</param-value>
</context-param>

3) Specify a unique variable name for your webapp's root, e.g. "myWebapp-instance-root"

<context-param>
  <param-name>webAppRootKey</param-name>
  <param-value>myWebapp-instance-root</param-value>
</context-param>

4) Add a Log4jConfigListener:

<listener>
  <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

If you choose a different name, remember to change it in log4j-myapp.properties, too.

See my article (Italian only... but it should be understandable): http://www.megadix.it/content/configurare-path-relativi-log4j-utilizzando-spring

UPDATE (2009/08/01) I've translated my article to English: http://www.megadix.it/node/136

This functionality is not built-in to C# 5 or below.
Update: C# 6 now supports string interpolation, see newer answers.

The recommended way to do this would be with String.Format:

string name = "Scott";
string output = String.Format("Hello {0}", name);

However, I wrote a small open-source library called SmartFormat that extends String.Format so that it can use named placeholders (via reflection). So, you could do:

string name = "Scott";
string output = Smart.Format("Hello {name}", new{name}); // Results in "Hello Scott".

Hope you like it!

It can be solved by using different attribute.

• Use the cell Control click event.
• Select the column value that your transpose to anther column.
• send the selected value to the another text box or level whatever you fill convenient and a complementary button to modify the selected property.
• update the whole stack op the database and make a algorithm with sql query to overcome this one to transpose it into the another column.

It's worth mentioning that (at least in python 3), in order for this to work, you must have a file named __init__.py in the same directory.

You can also use JTattoo (http://www.jtattoo.net/), it has a couple of cool themes that can be used.

Just download the jar and import it into your classpath, or add it as a maven dependency:

<dependency>
        <groupId>com.jtattoo</groupId>
        <artifactId>JTattoo</artifactId>
        <version>1.6.11</version>
</dependency>

Here is a list of some of the cool themes they have available:

• com.jtattoo.plaf.acryl.AcrylLookAndFeel
• com.jtattoo.plaf.aero.AeroLookAndFeel
• com.jtattoo.plaf.aluminium.AluminiumLookAndFeel
• com.jtattoo.plaf.bernstein.BernsteinLookAndFeel
• com.jtattoo.plaf.fast.FastLookAndFeel
• com.jtattoo.plaf.graphite.GraphiteLookAndFeel
• com.jtattoo.plaf.hifi.HiFiLookAndFeel
• com.jtattoo.plaf.luna.LunaLookAndFeel
• com.jtattoo.plaf.mcwin.McWinLookAndFeel
• com.jtattoo.plaf.mint.MintLookAndFeel
• com.jtattoo.plaf.noire.NoireLookAndFeel
• com.jtattoo.plaf.smart.SmartLookAndFeel
• com.jtattoo.plaf.texture.TextureLookAndFeel
• com.jtattoo.plaf.custom.flx.FLXLookAndFeel

Regards

With regular expressions

import re
s="""
    qwertyuiop
    asdfghjkl

    zxcvbnm
    token qwerty

    asdfghjklñ
"""
>>> items=re.findall("token.*$",s,re.MULTILINE)
>>> for x in items:
...     print x
...
token qwerty

you can create a singleton class for call easily like this:

public class KeyboardUtils {

    private static KeyboardUtils instance;
    private InputMethodManager inputMethodManager;

    private KeyboardUtils() {
    }

    public static KeyboardUtils getInstance() {
        if (instance == null)
            instance = new KeyboardUtils();
        return instance;
    }

    private InputMethodManager getInputMethodManager() {
        if (inputMethodManager == null)
            inputMethodManager = (InputMethodManager) Application.getInstance().getSystemService(Activity.INPUT_METHOD_SERVICE);
        return inputMethodManager;
    }

    @SuppressWarnings("ConstantConditions")
    public void hide(final Activity activity) {
        new Handler().post(new Runnable() {
            @Override
            public void run() {
                try {
                    getInputMethodManager().hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
                } catch (NullPointerException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

so, after can call in the activity how the next form:

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity);
        KeyboardUtils.getInstance().hide(this);
    }

}

Following are possible ways to see the version:

Method 1: Connect to the instance of SQL Server, and then run the following query:

Select @@version

An example of the output of this query is as follows:

Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (X64)   Mar 29 2009 
10:11:52   Copyright (c) 1988-2008 Microsoft Corporation  Express 
Edition (64-bit) on Windows NT 6.1 <X64> (Build 7600: )

Method 2: Connect to the server by using Object Explorer in SQL Server Management Studio. After Object Explorer is connected, it will show the version information in parentheses, together with the user name that is used to connect to the specific instance of SQL Server.

Method 3: Look at the first few lines of the Errorlog file for that instance. By default, the error log is located at Program Files\Microsoft SQL Server\MSSQL.n\MSSQL\LOG\ERRORLOG and ERRORLOG.n files. The entries may resemble the following:

2011-03-27 22:31:33.50 Server      Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (X64)                 Mar 29 2009 10:11:52                 Copyright (c) 1988-2008 Microsoft Corporation                Express Edition (64-bit) on Windows NT 6.1 <X64> (Build 7600: )

As you can see, this entry gives all the necessary information about the product, such as version, product level, 64-bit versus 32-bit, the edition of SQL Server, and the OS version on which SQL Server is running.

Method 4: Connect to the instance of SQL Server, and then run the following query:

SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition')

Note This query works with any instance of SQL Server 2000 or of a later version

You seek the all-powerful *?

From the docs, Greedy versus Non-Greedy

the non-greedy qualifiers *?, +?, ??, or {m,n}? [...] match as little text as possible.

I guess I'll post this answer for some variety. This technique for purging duplicates is something I picked up on for a project in Flash I'm currently working on about a month or so ago.

What you do is make an object and fill it with both a key and a value utilizing each array item. Since duplicate keys are discarded, duplicates are removed.

var nums = [1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 9, 10];
var newNums = purgeArray(nums);

function purgeArray(ar)
{
    var obj = {};
    var temp = [];
    for(var i=0;i<ar.length;i++)
    {
        obj[ar[i]] = ar[i];
    }
    for (var item in obj)
    {
        temp.push(obj[item]);
    }
    return temp;
}

There's already 5 other answers, so I don't see a need to post a sorting function.

I'm using this https://github.com/biggora/bootstrap-ajax-typeahead

The result of code using Codeigniter/PHP

<pre>

$("#produto").typeahead({
        onSelect: function(item) {
            console.log(item);
            getProductInfs(item);
        },
        ajax: {
            url: path + 'produto/getProdName/',
            timeout: 500,
            displayField: "concat",
            valueField: "idproduto",
            triggerLength: 1,
            method: "post",
            dataType: "JSON",
            preDispatch: function (query) {
                showLoadingMask(true);
                return {
                    search: query
                }
            },
            preProcess: function (data) {

                if (data.success === false) {
                    return false;
                }else{
                    return data;    
                }                
            }               
        }
    });
</pre>   

You can try this:

do {
   var op = prompt("please input operatot \n you most select one of * - / *  ")
} while (typeof op == "object" || op == ""); 
// execute block of code when click on cancle or ok whthout input

If the browser that you are planning to use is Mozilla (Addon development) (not sure of chrome) you can use the following method in Javascript

function DOM( string )
{
    var {Cc, Ci} = require("chrome");
    var parser = Cc["@mozilla.org/xmlextras/domparser;1"].createInstance(Ci.nsIDOMParser);
    console.log("PARSING OF DOM COMPLETED ...");
    return (parser.parseFromString(string, "text/html"));
};

Hope this helps

Bitmap d = new Bitmap(c.Width, c.Height);

for (int i = 0; i < c.Width; i++)
{
    for (int x = 0; x < c.Height; x++)
    {
        Color oc = c.GetPixel(i, x);
        int grayScale = (int)((oc.R * 0.3) + (oc.G * 0.59) + (oc.B * 0.11));
        Color nc = Color.FromArgb(oc.A, grayScale, grayScale, grayScale);
        d.SetPixel(i, x, nc);
    }
}

This way it also keeps the alpha channel.
Enjoy.

Swift 4

I think, there are two ways.

1. NSRange(range, in: )

2. NSRange(location:, length: )

Sample code:

let attributedString = NSMutableAttributedString(string: "Sample Text 12345", attributes: [.font : UIFont.systemFont(ofSize: 15.0)])

// NSRange(range, in: )
if let range = attributedString.string.range(of: "Sample")  {
    attributedString.addAttribute(.foregroundColor, value: UIColor.orange, range: NSRange(range, in: attributedString.string))
}

// NSRange(location: , length: )
if let range = attributedString.string.range(of: "12345") {
    attributedString.addAttribute(.foregroundColor, value: UIColor.green, range: NSRange(location: range.lowerBound.encodedOffset, length: range.upperBound.encodedOffset - range.lowerBound.encodedOffset))
}

Screen Shot:

I had this issue when I was trying to make my Docker container smaller. It was because I'd installed Python 2.7 with:

apt-get install -y --no-install-recommends python

And I should not have included the --no-install-recommends flag:

apt-get install -y python

Now the command is

heroku pg:reset DATABASE_URL --confirm your_app_name

this way you can specify which app's db you want to reset. Then you can run

heroku run rake db:migrate 
heroku run rake db:seed 

or direct for both above commands

heroku run rake db:setup 

And now final step to restart your app

heroku restart

You can try ng-file-upload angularjs plugin (instead of ng-upload).

It's fairly easy to setup and deal with angularjs specifics. It also supports progress, cancel, drag and drop and is cross browser.

html

<!-- Note: MUST BE PLACED BEFORE angular.js-->
<script src="ng-file-upload-shim.min.js"></script> 
<script src="angular.min.js"></script>
<script src="ng-file-upload.min.js"></script> 

<div ng-controller="MyCtrl">
  <input type="file" ngf-select="onFileSelect($files)" multiple>
</div>

JS:

//inject angular file upload directives and service.
angular.module('myApp', ['ngFileUpload']);

var MyCtrl = [ '$scope', '$upload', function($scope, $upload) {
  $scope.onFileSelect = function($files) {
    //$files: an array of files selected, each file has name, size, and type.
    for (var i = 0; i < $files.length; i++) {
      var file = $files[i];
      $scope.upload = $upload.upload({
        url: 'server/upload/url', //upload.php script, node.js route, or servlet url
        data: {myObj: $scope.myModelObj},
        file: file,
      }).progress(function(evt) {
        console.log('percent: ' + parseInt(100.0 * evt.loaded / evt.total));
      }).then(function(response) {
        var data = response.data;
        // file is uploaded successfully
        console.log(data);
      });
    }
  };
}];

You could use a Common Table Expression to get the top 10 distinct ID's and then join those to the rest of your data:

;WITH TopTenIDs AS
( 
   SELECT DISTINCT TOP 10 id
   FROM dm.labs 
   ORDER BY ......
)
SELECT 
    tti.id, pl.nm, pl.val, pl.txt_val
FROM
    TopTenIDs tti
INNER JOIN
    dm.labs pl ON pl.id = tti.id
INNER JOIN 
    mas_data.patients p ON pl.id = p.id
WHERE
    pl.nm like '%LDL%'
    AND val IS NOT NULL

That should work. Mind you: if you have a "TOP x" clause, you typically also need an ORDER BY clause - if you want the TOP 10, you need to tell the system in what order that "TOP" is.

PS: why do you even join the "patients" table, if you never select any fields from it??

The Run/Debug configuration you're using is meant to let you run Maven on your workspace as if from the command line without leaving Eclipse.

Assuming your tests are JUnit based you should be able to debug them by choosing a source folder containing tests with the right button and choose Debug as... -> JUnit tests.

I'm not so proud about this solution but you can have timestamp in microsecond or nanosecond in this way:

const microsecond = () => Number(Date.now() + String(process.hrtime()[1]).slice(3,6))
const nanosecond = () => Number(Date.now() + String(process.hrtime()[1]).slice(3))

// usage
microsecond() // return 1586878008997591
nanosecond()  // return 1586878009000645600

// Benchmark with 100 000 iterations
// Date.now: 7.758ms
// microsecond: 33.382ms
// nanosecond: 31.252ms

Know that:

• This solution works exclusively with node.js,
• This is about 3 to 10 times slower than Date.now()
• Weirdly, it seems very accurate, hrTime seems to follow exactly js timestamp ticks.
• You can replace Date.now() by Number(new Date()) to get timestamp in milliseconds

Edit:

Here a solution to have microsecond with comma, however, the number version will be rounded natively by javascript. So if you want the same format every time, you should use the String version of it.

const microsecondWithCommaString = () => (Date.now() + '.' + String(process.hrtime()[1]).slice(3,7))
const microsecondWithComma = () => Number(Date.now() + '.' + String(process.hrtime()[1]).slice(3,7))

microsecondWithCommaString() // return "1586883629984.8997"
microsecondWithComma() // return 1586883629985.966

You can use Character.toString(char). Note that this method simply returns a call to String.valueOf(char), which also works.

As others have noted, string concatenation works as a shortcut as well:

String s = "" + 's';

But this compiles down to:

String s = new StringBuilder().append("").append('s').toString();

which is less efficient because the StringBuilder is backed by a char[] (over-allocated by StringBuilder() to 16), only for that array to be defensively copied by the resulting String.

String.valueOf(char) "gets in the back door" by wrapping the char in a single-element array and passing it to the package private constructor String(char[], boolean), which avoids the array copy.

OpenSuse

"sudo zypper install libxml2-devel"

It will install any other dependencies or required packages/libraries

Using this shell command it will work:

SPRING_PROFILES_ACTIVE=test gradle clean bootRun

Sadly this is the simplest way I have found. It sets environment property for that call and then runs the app.

Check out MSDN...

CREATE SCHEMA: http://msdn.microsoft.com/en-us/library/ms189462.aspx

Then

ALTER SCHEMA: http://msdn.microsoft.com/en-us/library/ms173423.aspx

Or you can check it on on SO...

How do I move a table into a schema in T-SQL

Make sure you have all dependencies solved

I run into this problem in my first attempt at AOP, following a spring tutorial. My problem was not having spring-aop.jar in my classpath. The tutorial listed all other dependencies I had to add, namely:

• aspectjrt.jar
• aspectjweaver.jar
• aspectj.jar
• aopalliance.jar

But the one was missing. Just one more problem that can contribute to that symptom in the original question.

I am using Eclipse (neon), Java SE 8, beans 3.0, spring AOP 3.0, Spring 4.3.4. The problem showed in the Java view --not JEE--, and while trying to just run the application with Right button menu -> Run As -> Java Application.

Check the code below and the link to MDN

// var ts_hms = new Date(UTC);
// ts_hms.format("%Y-%m-%d %H:%M:%S")

// exact format
console.log(new Date().toISOString().replace('T', ' ').substring(0, 19))

// other formats
console.log(new Date().toUTCString())
console.log(new Date().toLocaleString('en-US'))
console.log(new Date().toString())

I would use

WHERE columnName LIKE '%[%]%'

SQL Server stores string summary statistics for use in estimating the number of rows that will match a LIKE clause. The cardinality estimates can be better and lead to a more appropriate plan when the square bracket syntax is used.

The response to this Connect Item states

We do not have support for precise cardinality estimation in the presence of user defined escape characters. So we probably get a poor estimate and a poor plan. We'll consider addressing this issue in a future release.

An example

CREATE TABLE T
(
X VARCHAR(50),
Y CHAR(2000) NULL
)

CREATE NONCLUSTERED INDEX IX ON T(X)

INSERT INTO T (X)
SELECT TOP (5) '10% off'
FROM master..spt_values
UNION ALL
SELECT  TOP (100000)  'blah'
FROM master..spt_values v1,  master..spt_values v2


SET STATISTICS IO ON;
SELECT *
FROM T 
WHERE X LIKE '%[%]%'

SELECT *
FROM T
WHERE X LIKE '%\%%' ESCAPE '\'

Shows 457 logical reads for the first query and 33,335 for the second.

Nurik's answer was very helpful, but I couldn't get it to work until I found this. In short, if you're using the compatibility library (eg SupportFragmentManager instead of FragmentManager), the syntax of the XML animation files will be different.

As jQuery won't trigger native change event but only triggers its own change event. If you bind event without jQuery and then use jQuery to trigger it the callbacks you bound won't run !

The solution is then like below (100% working) :

var sortBySelect = document.querySelector("select.your-class"); 
sortBySelect.value = "new value"; 
sortBySelect.dispatchEvent(new Event("change"));

You need to change public void klik(PaintEventArgs pea, EventArgs e) to public void klik(object sender, System.EventArgs e) because there is no Click event handler with parameters PaintEventArgs pea, EventArgs e.

I realize it's been a long time and the original asker likely no longer has any need of an answer, but none of these are good answers if you actually have control over this code. You're just using the wrong data structure. This is a perfect illustration of the use case for a two-way dict:

>>> from collections import defaultdict, UserDict
>>> class TwoWayDict(UserDict):
...     def __init__(self, *args, **kwargs):
...         super().__init__(*args, **kwargs)
...         self.val_to_keys = defaultdict(list)
...     def __setitem__(self, key, value):
...         super().__setitem__(key, value)
...         self.val_to_keys[value].append(key)
...     def get_keys_for_val(self, value):
...         return self.val_to_keys[value]
... 
>>> d = TwoWayDict()
>>> d['a'] = 1
>>> d['b'] = 1
>>> d.get_keys_for_val(1)
['a', 'b']

Adds miniscule overhead to insertions but you keep constant-time lookup, except now in both directions. No need to construct the reverse mapping from scratch every time you need it. Just store it as you go and access it as needed.

Further, many of these answers are not even correct because clearly many people can have the same age but they're only returning the first matching key, not all of them.

You're correct that this is really painful to hand out to others, but if you have to, this is how you do it.

1. Just extract the .ocx file from the .cab file (it is similar to a zip)
2. Copy to the system folder (c:\windows\sysWOW64 for 64 bit systems and c:\windows\system32 for 32 bit)
3. Use regsvr32 through the command prompt to register the file (e.g. "regsvr32 c:\windows\sysWOW64\mscomct2.ocx")

References

• http://social.msdn.microsoft.com/Forums/en-US/sbappdev/thread/91cf3127-70fe-4726-8a27-31b8964430c5/
• http://en.wikipedia.org/wiki/Cabinet_(file_format)

You can do it with HttpWebRequest:

var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://yourUrl");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    string json = new JavaScriptSerializer().Serialize(new
            {
                Username = "myusername",
                Password = "pass"
            });
    streamWriter.Write(json);
    streamWriter.Flush();
    streamWriter.Close();
}

var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
    var result = streamReader.ReadToEnd();
}

I'd just like to point out something in these answers. In a date/time format string, '/' will be replaced with whatever the user's date separator is, and ':' will be replaced with whatever the user's time separator is. That is, if I've defined my date separator to be '.' (in the Regional and Language Options control panel applet, "intl.cpl"), and my time separator to be '?' (just pretend I'm crazy like that), then

DateTime.Now.ToString("MM/dd/yyyy h:mm tt")

would return

01.05.2009 6?01 PM

In most cases, this is what you want, because you want to respect the user's settings. If, however, you require the format be something specific (say, if it's going to parsed back out by somebody else down the wire), then you need to escape these special characters:

DateTime.Now.ToString("MM\\/dd\\/yyyy h\\:mm tt")

or

DateTime.Now.ToString(@"MM\/dd\/yyyy h\:mm tt")

which would now return

01/05/2009 6:01 PM

EDIT:

Then again, if you really want to respect the user's settings, you should use one of the standard date/time format strings, so that you respect not only the user's choices of separators, but also the general format of the date and/or time.

DateTime.Now.ToShortDateString()
DateTime.Now.ToString("d")

Both would return "1/5/2009" using standard US options, or "05/01/2009" using standard UK options, for instance.

DateTime.Now.ToLongDateString()
DateTime.Now.ToString("D")

Both would return "Monday, January 05, 2009" in US locale, or "05 January 2009" in UK.

DateTime.Now.ToShortTimeString()
DateTime.Now.ToString("t");

"6:01 PM" in US, "18:01" in UK.

DateTime.Now.ToLongTimeString()
DateTime.Now.ToString("T");

"6:01:04 PM" in US, "18:01:04" in UK.

DateTime.Now.ToString()
DateTime.Now.ToString("G");

"1/5/2009 6:01:04 PM" in US, "05/01/2009 18:01:04" in UK.

Many other options are available. See docs for standard date and time format strings and custom date and time format strings.

Hope this Helps:

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;

class Person implements Comparable {
  String firstName, lastName;

  public Person(String f, String l) {
    this.firstName = f;
    this.lastName = l;
  }

  public String getFirstName() {
    return firstName;
  }

  public String getLastName() {
    return lastName;
  }

  public String toString() {
    return "[ firstname=" + firstName + ",lastname=" + lastName + "]";
  }

  public int compareTo(Object obj) {
    Person emp = (Person) obj;
    int deptComp = firstName.compareTo(emp.getFirstName());

    return ((deptComp == 0) ? lastName.compareTo(emp.getLastName()) : deptComp);
  }

  public boolean equals(Object obj) {
    if (!(obj instanceof Person)) {
      return false;
    }
    Person emp = (Person) obj;
    return firstName.equals(emp.getFirstName()) && lastName.equals(emp.getLastName());
  }
}

class PersonComparator implements Comparator<Person> {
  public int compare(Person emp1, Person emp2) {
    int nameComp = emp1.getLastName().compareTo(emp2.getLastName());
    return ((nameComp == 0) ? emp1.getFirstName().compareTo(emp2.getFirstName()) : nameComp);
  }
}

public class Main {
  public static void main(String args[]) {
    ArrayList<Person> names = new ArrayList<Person>();
    names.add(new Person("E", "T"));
    names.add(new Person("A", "G"));
    names.add(new Person("B", "H"));
    names.add(new Person("C", "J"));

    Iterator iter1 = names.iterator();
    while (iter1.hasNext()) {
      System.out.println(iter1.next());
    }
    Collections.sort(names, new PersonComparator());
    Iterator iter2 = names.iterator();
    while (iter2.hasNext()) {
      System.out.println(iter2.next());
    }
  }
}

After trying all of the other solutions here without success, I skeptically tried the solution found in this article, and got it to work.

Essentially, it boils down to removing @charset "utf-8"; from your CSS.

This seems like a poor implementation in DreamWeaver - but it did fix the issue for me, regardless.

I'd like to add to other answers involving dropping tables and not deleting the file, that you can also execute delete from sqlite_sequence to reset auto-increment sequences.

It would be:

config/databases.yml
cache
log
data/sql
lib/filter/base
lib/form/base
lib/model/map
lib/model/om

or possibly even:

config/databases.yml
cache
log
data/sql
lib/*/base
lib/model/map
lib/model/om

in case that filter and form are the only directories in lib that do have a basesubdirectory that needs to be ignored (see it as an example of what you can do with the asterics).

word_display = ""
for letter in word:
    if letter in known:
        word_display = "%s%s " % (word_display, letter)
    else:
        word_display = "%s_ " % word_display
return word_display

Also you can bind to the public static members of the enum directly by using reflection:

typeof(Suit).GetMembers(BindingFlags.Public | BindingFlags.Static)
    .ToList().ForEach(x => DoSomething(x.Name));

The modern approach: flexbox

Simply add the following CSS to the container element (here, the div):

div {
  display: flex;
  justify-content: space-between;
}

div {_x000D_
  display: flex;_x000D_
  justify-content: space-between;_x000D_
}

<div>_x000D_
 <img src="http://placehold.it/100x100" alt=""  /> _x000D_
 <img src="http://placehold.it/100x100" alt=""  />_x000D_
 <img src="http://placehold.it/100x100" alt="" />_x000D_
</div>

The old way (for ancient browsers - prior to flexbox)

Use text-align: justify; on the container element.

Then stretch the content to take up 100% width

MARKUP

<div>
 <img src="http://placehold.it/100x100" alt=""  /> 
 <img src="http://placehold.it/100x100" alt=""  />
 <img src="http://placehold.it/100x100" alt="" />
</div>

CSS

div {
    text-align: justify;
}

div img {
    display: inline-block;
    width: 100px;
    height: 100px;
}

div:after {
    content: '';
    display: inline-block;
    width: 100%;
}

div {_x000D_
    text-align: justify;_x000D_
}_x000D_
_x000D_
div img {_x000D_
    display: inline-block;_x000D_
    width: 100px;_x000D_
    height: 100px;_x000D_
}_x000D_
_x000D_
div:after {_x000D_
    content: '';_x000D_
    display: inline-block;_x000D_
    width: 100%;_x000D_
}

<div>_x000D_
 <img src="http://placehold.it/100x100" alt=""  /> _x000D_
 <img src="http://placehold.it/100x100" alt=""  />_x000D_
 <img src="http://placehold.it/100x100" alt="" />_x000D_
</div>

On the selected answer I see that when initially the page is loaded the selection of first option is prior fixed and therefore gives the option of all the categories in selection 2. You can avoid that by adding the first option as the following in both the select tag:- <option value="none" selected disabled hidden>Select an Option</option>

<select name="select1" id="select1">
<option value="none" selected disabled hidden>Select an Option</option>
<option value="1">Fruit</option>
  <option value="2">Animal</option>
  <option value="3">Bird</option>
  <option value="4">Car</option>
</select>


<select name="select2" id="select2">
<option value="none" selected disabled hidden>Select an Option</option>
  <option value="1">Banana</option>
  <option value="1">Apple</option>
  <option value="1">Orange</option>
  <option value="2">Wolf</option>
  <option value="2">Fox</option>
  <option value="2">Bear</option>
  <option value="3">Eagle</option>
  <option value="3">Hawk</option>
  <option value="4">BWM<option>
</select>

Using br elements is fine, and as long as you don't need a lot of space between elements, is actually a logical thing to do as anyone can read your code and understand what spacing logic you are using.

The alternative is to create a custom class for white space. In bootstrap 4 you can use

<div class="w-100"></div>

to make a blank row across the page, but this is no different to using the <br> tag. The downside to creating a custom class for white space is that it can be a pain to read for others who view your code. A custom class would also apply the same amount of white space each time you used it, so if you wanted different amounts of white space on the same page, then you would need to create several white space classes.

In most cases, it is just easier to use <br> or <div class="w-100"></div> for the sake of ease and readability. it doesn't look pretty, but it works.

Other answers posted here for this question did not work for me using the latest Visual Studio 2017 Enterprise edition (as of 2018-09-18).

Instead, I used this method:

1. Close all but one instance of Visual Studio.
2. In the running instance, access the menu Tools->Extensions and Updates.
3. In that dialog, choose Online->Visual Studio Marketplace->Tools->Setup & Deployment.
4. From the list that appears, select Microsoft Visual Studio 2017 Installer Projects.

Once installed, close and restart Visual Studio. Go to File->New Project and search for the word Installer. You'll know you have the correct templates installed if you see a list that looks something like this:

Number of parameters is the amount of numbers that can be changed in the model. Mathematically this means number of dimensions of your optimization problem. For you as a programmer, each of this parameters is a floating point number, which typically takes 4 bytes of memory, allowing you to predict the size of this model once saved.

This formula for this number is different for each neural network layer type, but for Dense layer it is simple: each neuron has one bias parameter and one weight per input: N = n_neurons * ( n_inputs + 1).

This one here:

s = raw_input()
a=len(s)
for i in xrange(0, a):
    for j in xrange(0, a):
        if j >= i:
            if len(s[i:j+1]) > 0:
                sub_strings.append(s[i:j+1])

seems to be very inefficient and expensive for large strings.

Better do

for i in xrange(0, a):
    for j in xrange(i, a): # ensures that j >= i, no test required
        part = buffer(s, i, j+1-i) # don't duplicate data
        if len(part) > 0:
            sub_Strings.append(part)

A buffer object keeps a reference to the original string and start and length attributes. This way, no unnecessary duplication of data occurs.

A string of length l has l*l/2 sub strings of average length l/2, so the memory consumption would roughly be l*l*l/4. With a buffer, it is much smaller.

Note that buffer() only exists in 2.x. 3.x has memoryview(), which is utilized slightly different.

Even better would be to compute the indexes and cut out the substring on demand.

Surely using array_map and if using a container implementing ArrayAccess to derive objects is just a smarter, semantic way to go about this?

Array map semantics are similar across most languages and implementations that I've seen. It's designed to return a modified array based upon input array element (high level ignoring language compile/runtime type preference); a loop is meant to perform more logic.

For retrieving objects by ID / PK, depending upon if you are using SQL or not (it seems suggested), I'd use a filter to ensure I get an array of valid PK's, then implode with comma and place into an SQL IN() clause to return the result-set. It makes one call instead of several via SQL, optimising a bit of the call->wait cycle. Most importantly my code would read well to someone from any language with a degree of competence and we don't run into mutability problems.

<?php

$arr = [0,1,2,3,4];
$arr2 = array_map(function($value) { return is_int($value) ? $value*2 : $value; }, $arr);
var_dump($arr);
var_dump($arr2);

vs

<?php

$arr = [0,1,2,3,4];
foreach($arr as $i => $item) {
    $arr[$i] = is_int($item) ? $item * 2 : $item;
}
var_dump($arr);

If you know what you are doing will never have mutability problems (bearing in mind if you intend upon overwriting $arr you could always $arr = array_map and be explicit.

While using TOP or a sub-query both work, I would break the problem into steps:

Find target record

SELECT MIN( date ) AS date, id
FROM myTable
WHERE id = 2
GROUP BY id

Join to get other fields

SELECT mt.id, mt.name, mt.score, mt.date
FROM myTable mt
INNER JOIN
( 
   SELECT MIN( date ) AS date, id
   FROM myTable
   WHERE id = 2
   GROUP BY id
) x ON x.date = mt.date AND x.id = mt.id

While this solution, using derived tables, is longer, it is:

• Easier to test
• Self documenting
• Extendable

It is easier to test as parts of the query can be run standalone.

It is self documenting as the query directly reflects the requirement ie the derived table lists the row where id = 2 with the earliest date.

It is extendable as if another condition is required, this can be easily added to the derived table.

TLDR; _{Logical Operators in Pandas are &, | and ~, and parentheses (...) is important!}

Python's and, or and not logical operators are designed to work with scalars. So Pandas had to do one better and override the bitwise operators to achieve vectorized (element-wise) version of this functionality.

So the following in python (exp1 and exp2 are expressions which evaluate to a boolean result)...

exp1 and exp2              # Logical AND
exp1 or exp2               # Logical OR
not exp1                   # Logical NOT

...will translate to...

exp1 & exp2                # Element-wise logical AND
exp1 | exp2                # Element-wise logical OR
~exp1                      # Element-wise logical NOT

for pandas.

If in the process of performing logical operation you get a ValueError, then you need to use parentheses for grouping:

(exp1) op (exp2)

For example,

(df['col1'] == x) & (df['col2'] == y) 

And so on.

Boolean Indexing: A common operation is to compute boolean masks through logical conditions to filter the data. Pandas provides three operators: & for logical AND, | for logical OR, and ~ for logical NOT.

Consider the following setup:

np.random.seed(0)
df = pd.DataFrame(np.random.choice(10, (5, 3)), columns=list('ABC'))
df

   A  B  C
0  5  0  3
1  3  7  9
2  3  5  2
3  4  7  6
4  8  8  1

Logical AND

For df above, say you'd like to return all rows where A < 5 and B > 5. This is done by computing masks for each condition separately, and ANDing them.

Overloaded Bitwise & Operator
Before continuing, please take note of this particular excerpt of the docs, which state

Another common operation is the use of boolean vectors to filter the data. The operators are: | for or, & for and, and ~ for not. These must be grouped by using parentheses, since by default Python will evaluate an expression such as df.A > 2 & df.B < 3 as df.A > (2 & df.B) < 3, while the desired evaluation order is (df.A > 2) & (df.B < 3).

So, with this in mind, element wise logical AND can be implemented with the bitwise operator &:

df['A'] < 5

0    False
1     True
2     True
3     True
4    False
Name: A, dtype: bool

df['B'] > 5

0    False
1     True
2    False
3     True
4     True
Name: B, dtype: bool

(df['A'] < 5) & (df['B'] > 5)

0    False
1     True
2    False
3     True
4    False
dtype: bool

And the subsequent filtering step is simply,

df[(df['A'] < 5) & (df['B'] > 5)]

   A  B  C
1  3  7  9
3  4  7  6

The parentheses are used to override the default precedence order of bitwise operators, which have higher precedence over the conditional operators < and >. See the section of Operator Precedence in the python docs.

If you do not use parentheses, the expression is evaluated incorrectly. For example, if you accidentally attempt something such as

df['A'] < 5 & df['B'] > 5

It is parsed as

df['A'] < (5 & df['B']) > 5

Which becomes,

df['A'] < something_you_dont_want > 5

Which becomes (see the python docs on chained operator comparison),

(df['A'] < something_you_dont_want) and (something_you_dont_want > 5)

Which becomes,

# Both operands are Series...
something_else_you_dont_want1 and something_else_you_dont_want2

Which throws

ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

So, don't make that mistake!¹

Avoiding Parentheses Grouping
The fix is actually quite simple. Most operators have a corresponding bound method for DataFrames. If the individual masks are built up using functions instead of conditional operators, you will no longer need to group by parens to specify evaluation order:

df['A'].lt(5)

0     True
1     True
2     True
3     True
4    False
Name: A, dtype: bool

df['B'].gt(5)

0    False
1     True
2    False
3     True
4     True
Name: B, dtype: bool

df['A'].lt(5) & df['B'].gt(5)

0    False
1     True
2    False
3     True
4    False
dtype: bool

See the section on Flexible Comparisons.. To summarise, we have

+------------------------------+
¦    ¦ Operator   ¦ Function   ¦
¦----+------------+------------¦
¦  0 ¦ >          ¦ gt         ¦
+----+------------+------------¦
¦  1 ¦ >=         ¦ ge         ¦
+----+------------+------------¦
¦  2 ¦ <          ¦ lt         ¦
+----+------------+------------¦
¦  3 ¦ <=         ¦ le         ¦
+----+------------+------------¦
¦  4 ¦ ==         ¦ eq         ¦
+----+------------+------------¦
¦  5 ¦ !=         ¦ ne         ¦
+------------------------------+

Another option for avoiding parentheses is to use DataFrame.query (or eval):

df.query('A < 5 and B > 5')

   A  B  C
1  3  7  9
3  4  7  6

I have extensively documented query and eval in Dynamic Expression Evaluation in pandas using pd.eval().

operator.and_
Allows you to perform this operation in a functional manner. Internally calls Series.__and__ which corresponds to the bitwise operator.

import operator 

operator.and_(df['A'] < 5, df['B'] > 5)
# Same as,
# (df['A'] < 5).__and__(df['B'] > 5) 

0    False
1     True
2    False
3     True
4    False
dtype: bool

df[operator.and_(df['A'] < 5, df['B'] > 5)]

   A  B  C
1  3  7  9
3  4  7  6

You won't usually need this, but it is useful to know.

Generalizing: np.logical_and (and logical_and.reduce)
Another alternative is using np.logical_and, which also does not need parentheses grouping:

np.logical_and(df['A'] < 5, df['B'] > 5)

0    False
1     True
2    False
3     True
4    False
Name: A, dtype: bool

df[np.logical_and(df['A'] < 5, df['B'] > 5)]

   A  B  C
1  3  7  9
3  4  7  6

np.logical_and is a ufunc (Universal Functions), and most ufuncs have a reduce method. This means it is easier to generalise with logical_and if you have multiple masks to AND. For example, to AND masks m1 and m2 and m3 with &, you would have to do

m1 & m2 & m3

However, an easier option is

np.logical_and.reduce([m1, m2, m3])

This is powerful, because it lets you build on top of this with more complex logic (for example, dynamically generating masks in a list comprehension and adding all of them):

import operator

cols = ['A', 'B']
ops = [np.less, np.greater]
values = [5, 5]

m = np.logical_and.reduce([op(df[c], v) for op, c, v in zip(ops, cols, values)])
m 
# array([False,  True, False,  True, False])

df[m]
   A  B  C
1  3  7  9
3  4  7  6

_{1 - I know I'm harping on this point, but please bear with me. This is a very, very common beginner's mistake, and must be explained very thoroughly.}

Logical OR

For the df above, say you'd like to return all rows where A == 3 or B == 7.

Overloaded Bitwise |

df['A'] == 3

0    False
1     True
2     True
3    False
4    False
Name: A, dtype: bool

df['B'] == 7

0    False
1     True
2    False
3     True
4    False
Name: B, dtype: bool

(df['A'] == 3) | (df['B'] == 7)

0    False
1     True
2     True
3     True
4    False
dtype: bool

df[(df['A'] == 3) | (df['B'] == 7)]

   A  B  C
1  3  7  9
2  3  5  2
3  4  7  6

If you haven't yet, please also read the section on Logical AND above, all caveats apply here.

Alternatively, this operation can be specified with

df[df['A'].eq(3) | df['B'].eq(7)]

   A  B  C
1  3  7  9
2  3  5  2
3  4  7  6

operator.or_
Calls Series.__or__ under the hood.

operator.or_(df['A'] == 3, df['B'] == 7)
# Same as,
# (df['A'] == 3).__or__(df['B'] == 7)

0    False
1     True
2     True
3     True
4    False
dtype: bool

df[operator.or_(df['A'] == 3, df['B'] == 7)]

   A  B  C
1  3  7  9
2  3  5  2
3  4  7  6

np.logical_or
For two conditions, use logical_or:

np.logical_or(df['A'] == 3, df['B'] == 7)

0    False
1     True
2     True
3     True
4    False
Name: A, dtype: bool

df[np.logical_or(df['A'] == 3, df['B'] == 7)]

   A  B  C
1  3  7  9
2  3  5  2
3  4  7  6

For multiple masks, use logical_or.reduce:

np.logical_or.reduce([df['A'] == 3, df['B'] == 7])
# array([False,  True,  True,  True, False])

df[np.logical_or.reduce([df['A'] == 3, df['B'] == 7])]

   A  B  C
1  3  7  9
2  3  5  2
3  4  7  6

Logical NOT

Given a mask, such as

mask = pd.Series([True, True, False])

If you need to invert every boolean value (so that the end result is [False, False, True]), then you can use any of the methods below.

Bitwise ~

~mask

0    False
1    False
2     True
dtype: bool

Again, expressions need to be parenthesised.

~(df['A'] == 3)

0     True
1    False
2    False
3     True
4     True
Name: A, dtype: bool

This internally calls

mask.__invert__()

0    False
1    False
2     True
dtype: bool

But don't use it directly.

operator.inv
Internally calls __invert__ on the Series.

operator.inv(mask)

0    False
1    False
2     True
dtype: bool

np.logical_not
This is the numpy variant.

np.logical_not(mask)

0    False
1    False
2     True
dtype: bool

Note, np.logical_and can be substituted for np.bitwise_and, logical_or with bitwise_or, and logical_not with invert.

Use continue statement instead of return to skip an iteration in JS loops.

tuxfiles.org holds a pretty good cheat sheet. I think there are a couple of points to learning the commands:

• Read the cheat sheet regularly. Don't worry about using all of them, or remembering all the keys, just know that the command exists. Look up the command and use it when you find yourself doing something repetitive.
• If you find yourself doing something regularly (like deleting an entire line after a particular character d$), go a quick google search to see if you can find a command for it.
• Write down commands you think you'll find useful and keep that list where you can see it while you're writing your code. I would argue against printing something out and instead encourage you to use post it notes for just a few commands at a time.
• If possible, watch other programmers use vim, and ask them what commands they are using as you see them do something interesting.

Besides these tips, there are some basic concepts you should understand.

• vim will use the same character to represent the same function. For example, to delete a line after a character use d$. To highlight a line after a particular character use v$. So notice that $ indicates you will be doing something to the end of the line from where your cursor currently is.
• u is undo, and ctrl+r is redo.
• putting a number in front of a command will execute it repeatedly. 3dd will delete the line your cursor is on and the two lines that follow, similarly 3yy will copy the line your cursor is on and the two lines that follow.
• understand how to navigate through the buffers use :ls to list the buffers, and :bn, :bp to cycle through them.
• read through the tutorial found in :help This is probably the best way to 'learn the ropes', and the rest of the commands you will learn through usage.

Not the most beautiful way of doing it I guess:

git log --pretty=oneline | wc -l

This gives you a number then

git log HEAD~<The number minus one>

  is a HTML entity. When doing .text(), all HTML entities are decoded to their character values.

Instead of comparing using the entity, compare using the actual raw character:

var x = td.text();
if (x == '\xa0') { // Non-breakable space is char 0xa0 (160 dec)
  x = '';
}

Or you can also create the character from the character code manually it in its Javascript escaped form:

var x = td.text();
if (x == String.fromCharCode(160)) { // Non-breakable space is char 160
  x = '';
}

More information about String.fromCharCode is available here:

fromCharCode - MDC Doc Center

More information about character codes for different charsets are available here:

Windows-1252 Charset
UTF-8 Charset

To do something after certain div load from function .load(). I think this exactly what you need:

  $('#divIDer').load(document.URL +  ' #divIDer',function() {

       // call here what you want .....


       //example
       $('#mydata').show();
  });

   <p id="text" onclick="func()">
    Click on text to change
</p>
<script>
function func()
{
    document.getElementById("text").style.color="red";
    document.getElementById("text").style.font="calibri";
}
</script>

Try:

var date = new Date('2012-11-29 17:00:34 UTC');
date.toString();

You can specify GLOBIGNORE and use the pattern *

GLOBIGNORE='ignore1:ignore2' scp -r source/* remoteurl:remoteDir

You may wish to have general rules which you combine or override by using export GLOBIGNORE, but for ad-hoc usage simply the above will do. The : character is used as delimiter for multiple values.

If your code is more of a data analysis routine (vs. visualization / GUI), try GNU Octave. It's free and many of its functions are compatible with MATLAB. (Not 100% but maybe 99.5%.)

Late answer but felt to add some points here.

Session storage will be available for specific tab where as we can use Local storage through out the browser. Both are default to same origin and we can also store values manually with key, value pairs (value must be string).

Once tab (session) of the browser is closed then Session storage will be cleared on that tab, where as in case of Local storage we need to clear it explicitly. Maximum storage limit respectively 5MB and 10MB.

We can save and retrieve the data like below,

To Save:

sessionStorage.setItem('id', noOfClicks);   // localStorage.setItem('id', noOfClicks);

sessionStorage.setItem('userDetails', JSON.stringify(userDetails));   // if it's object

To Get:

sessionStorage.getItem('id');    // localStorage.getItem('id');

User user = JSON.parse(sessionStorage.getItem("userDetails")) as User;  // if it's object

To Modify:

sessionStorage.removeItem('id');    // localStorage.removeItem('id');

sessionStorage.clear();   // localStorage.clear();

P.S: getItem() also return back the data as string and we need convert it into JSON format to access if it's object.

You can read more about Browser Storages here..

1. Difference between localStorage, sessionStorage and cookies

2. localstorage-vs-sessionstorage

On small device : 4 columns x 3 (= 12) ==> col-sm-3

On extra small : 3 columns x 4 (= 12) ==> col-xs-4

 <footer class="row">
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 1</li>
            <li>Text 2</li>
            <li>Text 3</li>
            </ul>
        </nav>
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 4</li>
            <li>Text 5</li>
            <li>Text 6</li>
            </ul>
        </nav>
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 7</li>
            <li>Text 8</li>
            <li>Text 9</li>
            </ul>
        </nav>
        <nav class="hidden-xs col-sm-3">
            <ul class="list-unstyled">
            <li>Text 10</li>
            <li>Text 11</li>
            <li>Text 12</li>
            </ul>
        </nav>
    </footer>

As you say, hidden-xs is not enough, you have to combine xs and sm class.

Here is links to the official doc about available responsive classes and about the grid system.

Have in head :

• 1 row = 12 cols
• For XtraSmall device : col-xs-__
  
• For SMall device : col-sm-__
  
• For MeDium Device: col-md-__
  
• For LarGe Device : col-lg-__
  
• Make visible only (hidden on other) : visible-md (just visible in medium [not in lg xs or sm])
• Make hidden only (visible on other) : hidden-xs (just hidden in XtraSmall)

cpp is the preprocessor.

Run cpp filename.c to output the preprocessed code, or better, redirect it to a file with cpp filename.c > filename.preprocessed.

You could also enforce a class to be static using metaclass.

class StaticClassError(Exception):
    pass


class StaticClass:
    __metaclass__ = abc.ABCMeta

    def __new__(cls, *args, **kw):
        raise StaticClassError("%s is a static class and cannot be initiated."
                                % cls)

class MyClass(StaticClass):
    a = 1
    b = 3

    @staticmethod
    def add(x, y):
        return x+y

Then whenever by accident you try to initialize MyClass you'll get an StaticClassError.

Try the file command with -i option.

-i option Causes the file command to output mime type strings rather than the more traditional human readable ones. Thus it may say text/plain; charset=us-ascii rather than ASCII text.

When you use a TemplateField and bind literal text to it like you are doing, asp.net will actually insert a control FOR YOU! It gets put into a DataBoundLiteralControl. You can see this if you look in the debugger near your line of code that is getting the empty text.

So, to access the information without changing your template to use a control, you would cast like this:

string percentage = ((DataBoundLiteralControl)e.Row.Cells[7].Controls[0]).Text;

That will get you your text!

HTML alone does not support this. You need to use some JS.

And also consider nowadays people use popup blocker in browsers.

<a href="javascript:window.open('document.aspx','mypopuptitle','width=600,height=400')">open popup</a>

Windows must be created on the same stack (aka microtask) as the user-initiated event, e.g. a click callback--so they can't be created later, asynchronously.

However, you can create a window without a URL and you can then change that window's URL once you do know it, even asynchronously!

window.onclick = () => {
  // You MUST create the window on the same event
  // tick/stack as the user-initiated event (e.g. click callback)
  const googleWindow = window.open();

  // Do your async work
  fakeAjax(response => {
    // Change the URL of the window you created once you
    // know what the full URL is!
    googleWindow.location.replace(`https://google.com?q=${response}`);
  });
};

function fakeAjax(callback) {
  setTimeout(() => {
    callback('example');
  }, 1000);
}

Modern browsers will open the window with a blank page (often called about:blank), and assuming your async task to get the URL is fairly quick, the resulting UX is mostly fine. If you instead want to render a loading message (or anything) into the window while the user waits, you can use Data URIs.

window.open('data:text/html,<h1>Loading...<%2Fh1>');

Word of caution when coding with Visual Studio (2013)

I have wasted 4 to 5 hours trying to debug this error. I tried all the solutions that I found on StackOverflow by the letter and I still got this error: Can't bind to 'routerlink' since it isn't a known native property

Be aware, Visual Studio has the nasty habit of autoformatting text when you copy/paste code. I always got a small instantaneous adjustment from VS13 (camel case disappears).

This:

<div>
    <a [routerLink]="['/catalog']">Catalog</a>
    <a [routerLink]="['/summary']">Summary</a>
</div>

Becomes:

<div>
    <a [routerlink]="['/catalog']">Catalog</a>
    <a [routerlink]="['/summary']">Summary</a>
</div>

It's a small difference, but enough to trigger the error. The ugliest part is that this small difference just kept avoiding my attention every time I copied and pasted. By sheer chance, I saw this small difference and solved it.

Native JSON support has been included in PHP since 5.2 in the form of methods json_encode() and json_decode(). You would use the first to output a PHP variable in JSON.

data.reshape((50,1104,-1))

works for me