If you want to serve .html files, you must add this <mvc:default-servlet-handler />
in your spring config file. .html files are static.
Hope that this can help someone.
You may try this, This list dynamic branch names in dropdown w.r.t inputted Git Repo.
Jenkins Plugins required:
OPTION 1: Jenkins File:
properties([
[$class: 'JobRestrictionProperty'], parameters([validatingString(defaultValue: 'https://github.com/kubernetes/kubernetes.git', description: 'Input Git Repo (https) Url', failedValidationMessage: 'Invalid Git Url. Retry again', name: 'GIT_REPO', regex: 'https://.*'), [$class: 'CascadeChoiceParameter', choiceType: 'PT_SINGLE_SELECT', description: 'Select Git Branch Name', filterLength: 1, filterable: false, name: 'BRANCH_NAME', randomName: 'choice-parameter-8292706885056518', referencedParameters: 'GIT_REPO', script: [$class: 'GroovyScript', fallbackScript: [classpath: [], sandbox: false, script: 'return[\'Error - Unable to retrive Branch name\']'], script: [classpath: [], sandbox: false, script: ''
'def GIT_REPO_SRC = GIT_REPO.tokenize(\'/\')
GIT_REPO_FULL = GIT_REPO_SRC[-2] + \'/\' + GIT_REPO_SRC[-1]
def GET_LIST = ("git ls-remote --heads [email protected]:${GIT_REPO_FULL}").execute()
GET_LIST.waitFor()
BRANCH_LIST = GET_LIST.in.text.readLines().collect {
it.split()[1].replaceAll("refs/heads/", "").replaceAll("refs/tags/", "").replaceAll("\\\\^\\\\{\\\\}", "")
}
return BRANCH_LIST ''
']]]]), throttleJobProperty(categories: [], limitOneJobWithMatchingParams: false, maxConcurrentPerNode: 0, maxConcurrentTotal: 0, paramsToUseForLimit: '
', throttleEnabled: false, throttleOption: '
project '), [$class: '
JobLocalConfiguration ', changeReasonComment: '
']])
try {
node('master') {
stage('Print Variables') {
echo "Branch Name: ${BRANCH_NAME}"
}
}
catch (e) {
currentBuild.result = "FAILURE"
print e.getMessage();
print e.getStackTrace();
}
OPTION 2: Jenkins UI
Sample Output:
I recently ran into a situation where I wanted to make to $http calls triggered by a page reload. The solution I went with:
Mine got stuck applying the .NET 4.6.1 blah... Turning off the internet and disabling Microsoft Security Essentials Real-time protection got things moving again.
.cpp
is the recommended extension for C++ as far as I know. Some people even recommend using .hpp
for C++ headers, just to differentiate from C.
Although the compiler doesn't care what you do, it's personal preference.
you should use action instead of actionListener:
<h:commandLink id="close" action="#{bean.close}" value="Close" immediate="true"
/>
and in close method you right something like:
public String close() {
return "index?faces-redirect=true";
}
where index is one of your pages(index.xhtml)
Of course, all this staff should be written in our original page, not in the intermediate.
And inside the close()
method you can use the parameters to dynamically choose where to redirect.
try with this
$ cat /tmp/topfs.txt
/dev/sda2 xfs 32G 10G 22G 32% /
awk print last column
$ cat /tmp/topfs.txt | awk '{print $NF}'
awk print before last column
$ cat /tmp/topfs.txt | awk '{print $(NF-1)}'
32%
awk - print last two columns
$ cat /tmp/topfs.txt | awk '{print $(NF-1), $NF}'
32% /
It is not shipped with bootstrap 4 yet, but now Bootstrap team is developing their icon library.
EDIT:
Ok I found why the int.ToString() in LINQtoEF fails, please read this post: Problem with converting int to string in Linq to entities
This works on my side :
List<string> materialTypes = (from u in result.Users
select u.LastName)
.Union(from u in result.Users
select SqlFunctions.StringConvert((double) u.UserId)).ToList();
On yours it should be like this:
IList<String> materialTypes = ((from tom in context.MaterialTypes
where tom.IsActive == true
select tom.Name)
.Union(from tom in context.MaterialTypes
where tom.IsActive == true
select SqlFunctions.StringConvert((double)tom.ID))).ToList();
Thanks, i've learnt something today :)
Two steps worked for me:
gem install bundler
bundle install --redownload # Forces a redownload of all gems on the gemfile, assigning them to the new bundler
Enclosed in {} represents an object; enclosed in [] represents an array, there can be multiple objects in the array
example object :
{
"brand": "bwm",
"price": 30000
}
{
"brand": "benz",
"price": 50000
}
example array:
[
{
"brand": "bwm",
"price": 30000
},
{
"brand": "benz",
"price": 50000
}
]
In order to use JSON more beautifully, you can go here JSON Viewer do format
If you need to manipulate it on the client side, you can't use the Visible property on the server side. Instead, set its CSS display style to "none". For example:
<asp:Label runat="server" id="Label1" style="display: none;" />
Then, you could make it visible on the client side with:
document.getElementById('Label1').style.display = 'inherit';
You could make it hidden again with:
document.getElementById('Label1').style.display = 'none';
Keep in mind that there may be issues with the ClientID being more complex than "Label1" in practice. You'll need to use the ClientID with getElementById, not the server side ID, if they differ.
First Replace the MySQL dependency as given below
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
An error showing "Authentication plugin 'caching_sha2_password'" will appear. Run this command:
mysql -u root -p
ALTER USER 'username'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';
Using this you can check at least one checkbox is selected or not in different checkbox groups or multiple checkboxes.
Reference : Link
<label class="control-label col-sm-4">Check Box 1</label>
<input type="checkbox" name="checkbox1" id="checkbox1" value=Male /> Male<br />
<input type="checkbox" name="checkbox1" id="checkbox1" value=Female /> Female<br />
<label class="control-label col-sm-4">Check Box 2</label>
<input type="checkbox" name="checkbox2" id="checkbox2" value=ck1 /> ck1<br />
<input type="checkbox" name="checkbox2" id="checkbox2" value=ck2 /> ck2<br />
<label class="control-label col-sm-4">Check Box 3</label>
<input type="checkbox" name="checkbox3" id="checkbox3" value=ck3 /> ck3<br />
<input type="checkbox" name="checkbox3" id="checkbox3" value=ck4 /> ck4<br />
<script>
function checkFormData() {
if (!$('input[name=checkbox1]:checked').length > 0) {
document.getElementById("errMessage").innerHTML = "Check Box 1 can not be null";
return false;
}
if (!$('input[name=checkbox2]:checked').length > 0) {
document.getElementById("errMessage").innerHTML = "Check Box 2 can not be null";
return false;
}
if (!$('input[name=checkbox3]:checked').length > 0) {
document.getElementById("errMessage").innerHTML = "Check Box 3 can not be null";
return false;
}
alert("Success");
return true;
}
</script>
For Electron 7.1.1, you can use this:
const {app, BrowserWindow, Menu} = require('electron')
Menu.setApplicationMenu(false)
Watch that your file name doesn't have :
in them either. I found that I had to mv blah-07-08-17-02:69.txt no_colons.txt
and then scp no-colons.txt server:
then don't forget to mv
back on the server. Just in case this was an issue.
You need to modify your function as:
function toggleTable()
{
if (document.getElementById("loginTable").style.display == "table" ) {
document.getElementById("loginTable").style.display="none";
} else {
document.getElementById("loginTable").style.display="table";
}
currently it is checking based on the boolean
parameter, you don't have to pass the parameter with your function.
You need to modify your anchor tag as:
<a id="loginLink" onclick="toggleTable();" href="#">Login</a>
If you are using Docker toolkit on window 10 home you will need to access the webpage through docker-machine ip command. It is generally 192.168.99.100:
It is assumed that you are running with publish command like below.
docker run -it -p 8080:8080 demo
With Window 10 pro version you can access with localhost or corresponding loopback 127.0.0.1:8080 etc (Tomcat or whatever you wish). This is because you don't have a virtual box there and docker is running directly on Window Hyper V and loopback is directly accessible.
Verify the hosts file in window for any digression. It should have 127.0.0.1 mapped to localhost
On some mobiles like mine (MIUI Redmi 3) you can just add specific Application on list where application doesnt stop when you terminate applactions in Task Manager (It will stop but it will start again)
Just go to Settings>PermissionsAutostart
With this command I had poor image quality
ffmpeg -i rtsp://192.168.XXX.XXX:554/live.sdp -vcodec copy -acodec copy -f mp4 -y MyVideoFFmpeg.mp4
With this, almost without delay, I got good image quality.
ffmpeg -i rtsp://192.168.XXX.XXX:554/live.sdp -b 900k -vcodec copy -r 60 -y MyVdeoFFmpeg.avi
Bottom line, the easiest way to append to a tuple is to enclose the element being added with parentheses and a comma.
t = ('a', 4, 'string')
t = t + (5.0,)
print(t)
out: ('a', 4, 'string', 5.0)
This can be done in one simple line.
Swift 5
var my2DArray = (0..<4).map { _ in Array(0..<) }
You could also map it to instances of any class or struct of your choice
struct MyStructCouldBeAClass {
var x: Int
var y: Int
}
var my2DArray: [[MyStructCouldBeAClass]] = (0..<2).map { x in
Array(0..<2).map { MyStructCouldBeAClass(x: x, y: $0)}
}
You can do it by calling an Activity
's runOnUiThread
method from your thread:
activity.runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(activity, "Hello", Toast.LENGTH_SHORT).show();
}
});
The Eclipse team with The Open University have prepared the following document, which includes creating proxy classes with tests. It might be what you are looking for.
http://www.eclipse.org/webtools/community/education/web/t320/Generating_a_client_from_WSDL.pdf
Everything is included in the Dynamic Web Project template.
In the project create a Web Service Client. This starts a wizard that has you point out a wsdl url and creates the client with tests for you.
The user guide (targeted at indigo though) for this task is found at http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.jst.ws.cxf.doc.user%2Ftasks%2Fcreate_client.html.
gterzian is on the right track, however, if you later update your version of ruby then you'll also have to update your .profile to point to the new versioned ruby directory. For instance, the current version of ruby is 2.0.0-p353 so you'd have to add /usr/local/Cellar/ruby/2.0.0-p353/bin to your path instead.
A better solution is to add /usr/local/opt/ruby/bin to your PATH. /usr/local/opt/ruby is actually a symlink to the current version of ruby that homebrew automatically updates when you do an upgrade. That way you'll never need to update your PATH and always be pointing to the latest version.
Memcached is a newer API, it also provides memcached as a session provider which could be great if you have a farm of server.
After the version is still really low 0.2 but I have used both and I didn't encounter major problem, so I would go to memcached since it's new.
This would select 4 in your case
SELECT ID FROM TableA WHERE ID NOT IN (SELECT ID FROM TableB)
This would delete them
DELETE FROM TableA WHERE ID NOT IN (SELECT ID FROM TableB)
You can use a RegExp to replace all the non-digit characters:
var myString = 'abc123.8<blah>';
myString = myString.replace(/[^\d]/g, ''); // 1238
<div class="collapse in " [ngClass]="(active_tab=='assignservice' || active_tab=='manage')?'show':''" id="collapseExampleOrganization" aria-expanded="true" style="">_x000D_
<ul> <li class="nav-item" [ngClass]="{'active': active_tab=='manage'}">_x000D_
<a routerLink="/main/organization/manage" (click)="activemenu('manage')"> <i class="la la-building-o"></i>_x000D_
<p>Manage</p></a></li> _x000D_
<li class="nav-item" [ngClass]="{'active': active_tab=='assignservice'}"><a routerLink="/main/organization/assignservice" (click)="activemenu('assignservice')"><i class="la la-user"></i><p>Add organization</p></a></li>_x000D_
</ul></div>
_x000D_
Code is good example of ngClass if else condition.
[ngClass]="(active_tab=='assignservice' || active_tab=='manage')?'show':''"
[ngClass]="{'active': active_tab=='assignservice'}"
'Truncate tableName' will fail on a table with key constraint defined. It will also not reindex the table AUTO_INCREMENT
value. Instead, Delete all table entries and reset indexing back to 1 using this sql syntax:
DELETE FROM tableName;
ALTER TABLE tableName AUTO_INCREMENT = 1
2 years later, I used Dallas' answer, but I had to change the HttpWebRequest
to FileWebRequest
since I was linking to direct files. Not sure if this is the case everywhere, but I figured I'd add it. Also, I removed
var resp = Http.Current.Resonse
and just used Http.Current.Response
in place wherever resp
was referenced.
Considering the previous answers, it is necessary to be careful with globalized characters.
Suppose the name of the file is: "Esdrújula prenda ñame - güena.jpg"
Raw result to download: "Esdrújula prenda ñame - güena.jpg" [Ugly]
HtmlEncode result to download: "Esdr&_250;jula prenda &_241;ame - g&_252;ena.jpg" [Ugly]
UrlEncode result to download: "Esdrújula+prenda+ñame+-+güena.jpg" [OK]
Then, you need almost always to use the UrlEncode over the file name. Moreover, if you set the content-disposition header as direct string, then you need to ensure surround with quotes to avoid browser compatibility issues.
Response.AddHeader("Content-Disposition", $"attachment; filename=\"{HttpUtility.UrlEncode(YourFilename)}\"");
or with class aid:
var cd = new ContentDisposition("attachment") { FileName = HttpUtility.UrlEncode(resultFileName) };
Response.AddHeader("Content-Disposition", cd.ToString());
The System.Net.Mime.ContentDisposition class takes care of quotes.
I don't understand why, over the course of eight years, no one has posted the easy answer. Rather than encode the file as base64, encode the json as a string. Then just decode the json on the server side.
In Javascript:
let formData = new FormData();
formData.append("file", myfile);
formData.append("myjson", JSON.stringify(myJsonObject));
POST it using Content-Type: multipart/form-data
On the server side, retrieve the file normally, and retrieve the json as a string. Convert the string to an object, which is usually one line of code no matter what programming language you use.
(Yes, it works great. Doing it in one of my apps.)
Yes, you can change the default shell from Explorer.exe to a specific application.
In Regedit, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon. The current shell should be Explorer.exe. Change it to YourApp.exe. That will change the shell for all users who log on to the machine. If you only want to change it for a specific user, go to the same key in HKEY_CURRENT_USER instead.
For Swift 3 and 4, if you're willing to use IBInspectable
s, there's this:
@IBDesignable extension UIView {
@IBInspectable var borderColor:UIColor? {
set {
layer.borderColor = newValue!.cgColor
}
get {
if let color = layer.borderColor {
return UIColor(cgColor: color)
}
else {
return nil
}
}
}
@IBInspectable var borderWidth:CGFloat {
set {
layer.borderWidth = newValue
}
get {
return layer.borderWidth
}
}
@IBInspectable var cornerRadius:CGFloat {
set {
layer.cornerRadius = newValue
clipsToBounds = newValue > 0
}
get {
return layer.cornerRadius
}
}
}
Your code works fine, except that the barplot is ordered from low to high. When you want to order the bars from high to low, you will have to add a -
sign before value
:
ggplot(corr.m, aes(x = reorder(miRNA, -value), y = value, fill = variable)) +
geom_bar(stat = "identity")
which gives:
Used data:
corr.m <- structure(list(miRNA = structure(c(5L, 2L, 3L, 6L, 1L, 4L), .Label = c("mmu-miR-139-5p", "mmu-miR-1983", "mmu-miR-301a-3p", "mmu-miR-5097", "mmu-miR-532-3p", "mmu-miR-96-5p"), class = "factor"),
variable = structure(c(1L, 1L, 1L, 1L, 1L, 1L), .Label = "pos", class = "factor"),
value = c(7L, 75L, 70L, 5L, 10L, 47L)),
class = "data.frame", row.names = c("1", "2", "3", "4", "5", "6"))
Messing around with environment variables or hard-coded parent folder offsets is never a good idea when there is a API to get the info you want, call SHGetSpecialFolderPath(...,CSIDL_PROFILE,...)
One solution is to install both x86 (32-bit) and x64 Oracle Clients on your machine, then it does not matter on which architecture your application is running.
Here an instruction to install x86 and x64 Oracle client on one machine:
Assumptions: Oracle Home is called OraClient11g_home1
, Client Version is 11gR2
Optionally remove any installed Oracle client (see How to uninstall / completely remove Oracle 11g (client)? if you face problems)
Download and install Oracle x86 Client, for example into C:\Oracle\11.2\Client_x86
Download and install Oracle x64 Client into different folder, for example to C:\Oracle\11.2\Client_x64
Open command line tool, go to folder %WINDIR%\System32, typically C:\Windows\System32
and create a symbolic link ora112
to folder C:\Oracle\11.2\Client_x64
(see commands section below)
Change to folder %WINDIR%\SysWOW64, typically C:\Windows\SysWOW64
and create a symbolic link ora112
to folder C:\Oracle\11.2\Client_x86
, (see below)
Modify the PATH
environment variable, replace all entries like C:\Oracle\11.2\Client_x86
and C:\Oracle\11.2\Client_x64
by C:\Windows\System32\ora112
, respective their \bin
subfolder. Note: C:\Windows\SysWOW64\ora112
must not be in PATH environment.
If needed set your ORACLE_HOME
environment variable to C:\Windows\System32\ora112
Open your Registry Editor. Set Registry value HKLM\Software\ORACLE\KEY_OraClient11g_home1\ORACLE_HOME
to C:\Windows\System32\ora112
Set Registry value HKLM\Software\Wow6432Node\ORACLE\KEY_OraClient11g_home1\ORACLE_HOME
to C:\Windows\System32\ora112
(not C:\Windows\SysWOW64\ora112
)
You are done! Now you can use x86 and x64 Oracle client seamless together, i.e. an x86 application will load the x86 libraries, an x64 application loads the x64 libraries without any further modification on your system.
Probably it is a wise option to set your TNS_ADMIN
environment variable (resp. TNS_ADMIN
entries in Registry) to a common location, for example TNS_ADMIN=C:\Oracle\Common\network
.
Commands to create symbolic links:
cd C:\Windows\System32
mklink /d ora112 C:\Oracle\11.2\Client_x64
cd C:\Windows\SysWOW64
mklink /d ora112 C:\Oracle\11.2\Client_x86
Notes:
Both symbolic links must have the same name, e.g. ora112
.
Despite of their names folder C:\Windows\System32
contains the x64 libraries, whereas C:\Windows\SysWOW64
contains the x86 (32-bit) libraries. Don't be confused.
Try this:
SELECT *
FROM TABLE
WHERE ID = (SELECT MAX(ID) FROM TABLE);
OR
you can also used following solution:
SELECT * FROM tablename ORDER BY column DESC LIMIT 1;
DataView view = new DataView();
view.Table = DataSet1.Tables["Suppliers"];
view.RowFilter = "City = 'Berlin'";
view.RowStateFilter = DataViewRowState.ModifiedCurrent;
view.Sort = "CompanyName DESC";
// Simple-bind to a TextBox control
Text1.DataBindings.Add("Text", view, "CompanyName");
Ref: http://www.csharp-examples.net/dataview-rowfilter/
http://msdn.microsoft.com/en-us/library/system.data.dataview.rowfilter.aspx
I had this issue on my stage server where I do only pulls. And hard reset helped me to clean HEAD to the same as remote.
git reset --hard origin/master
So now I have again:
On branch master
Your branch is up-to-date with 'origin/master'.
A very simple approach for the dev who just want to send POST parameters in multipart request.
Make the following changes in class which extends Request.java
First define these constants :
String BOUNDARY = "s2retfgsGSRFsERFGHfgdfgw734yhFHW567TYHSrf4yarg"; //This the boundary which is used by the server to split the post parameters.
String MULTIPART_FORMDATA = "multipart/form-data;boundary=" + BOUNDARY;
Add a helper function to create a post body for you :
private String createPostBody(Map<String, String> params) {
StringBuilder sbPost = new StringBuilder();
if (params != null) {
for (String key : params.keySet()) {
if (params.get(key) != null) {
sbPost.append("\r\n" + "--" + BOUNDARY + "\r\n");
sbPost.append("Content-Disposition: form-data; name=\"" + key + "\"" + "\r\n\r\n");
sbPost.append(params.get(key).toString());
}
}
}
return sbPost.toString();
}
Override getBody() and getBodyContentType
public String getBodyContentType() {
return MULTIPART_FORMDATA;
}
public byte[] getBody() throws AuthFailureError {
return createPostBody(getParams()).getBytes();
}
If the attribute is matching f.text_field
in form use string, if it is matching f.text_area
use text.
High cohesion within modules and low coupling between modules are often regarded as related to high quality in OO programming languages.
For example, the code inside each Java class must have high internal cohesion, but be as loosely coupled as possible to the code in other Java classes.
Chapter 3 of Meyer's Object-Oriented Software Construction (2nd edition) is a great description of these issues.
I tried both .empty()
as well as .remove()
for my dropdown and both were slow. Since I had almost 4,000 options there.
I used .html("")
which is much faster in my condition.
Which is below
$(dropdown).html("");
This just happen to me because in the php.ini the date.timezone was not set!
;date.timezone=Europe/Berlin
Using the php date() function triggered that warning.
contentType
option to false
is used for multipart/form-data
forms that pass files.
When one sets the contentType
option to false
, it forces jQuery not to add a Content-Type header, otherwise, the boundary string will be missing from it. Also, when submitting files via multipart/form-data, one must leave the processData
flag set to false, otherwise, jQuery will try to convert your FormData into a string, which will fail.
Use jQuery's .serialize()
method which creates a text string in standard URL-encoded notation.
You need to pass un-encoded data when using contentType: false
.
Try using new FormData
instead of .serialize():
var formData = new FormData($(this)[0]);
See for yourself the difference of how your formData is passed to your php page by using console.log()
.
var formData = new FormData($(this)[0]);
console.log(formData);
var formDataSerialized = $(this).serialize();
console.log(formDataSerialized);
Remember to set the endDate to the created event, it is mandatory.
Otherwise it will fail (almost silently) with this error:
"Error Domain=EKErrorDomain Code=3 "No end date has been set." UserInfo={NSLocalizedDescription=No end date has been set.}"
The complete working code for me is:
EKEventStore *store = [EKEventStore new];
[store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
if (!granted) { return; }
EKEvent *calendarEvent = [EKEvent eventWithEventStore:store];
calendarEvent.title = [NSString stringWithFormat:@"CEmprendedor: %@", _event.name];
calendarEvent.startDate = _event.date;
// 5 hours of duration, we must add the duration of the event to the API
NSDate *endDate = [_event.date dateByAddingTimeInterval:60*60*5];
calendarEvent.endDate = endDate;
calendarEvent.calendar = [store defaultCalendarForNewEvents];
NSError *err = nil;
[store saveEvent:calendarEvent span:EKSpanThisEvent commit:YES error:&err];
self.savedEventId = calendarEvent.eventIdentifier; //saving the calendar event id to possibly deleted them
}];
#To print all filenames in a bucket
import boto3
s3 = boto3.client('s3')
def get_s3_keys(bucket):
"""Get a list of keys in an S3 bucket."""
resp = s3.list_objects_v2(Bucket=bucket)
for obj in resp['Contents']:
files = obj['Key']
return files
filename = get_s3_keys('your_bucket_name')
print(filename)
#To print all filenames in a certain directory in a bucket
import boto3
s3 = boto3.client('s3')
def get_s3_keys(bucket, prefix):
"""Get a list of keys in an S3 bucket."""
resp = s3.list_objects_v2(Bucket=bucket, Prefix=prefix)
for obj in resp['Contents']:
files = obj['Key']
print(files)
return files
filename = get_s3_keys('your_bucket_name', 'folder_name/sub_folder_name/')
print(filename)
If you're using the Vixie Cron, e.g. on most Linux distributions, you can just put a file in /etc/cron.d with the individual cronjob.
This only works for root of course. If your system supports this you should see several examples in there. (Note the username included in the line, in the same syntax as the old /etc/crontab)
It's a sad misfeature in cron that there is no way to handle this as a regular user, and that so many cron implementations have no way at all to handle this.
I think you can almost do exactly what you thought would be ideal, using the statsmodels package which was one of pandas
' optional dependencies before pandas
' version 0.20.0 (it was used for a few things in pandas.stats
.)
>>> import pandas as pd
>>> import statsmodels.formula.api as sm
>>> df = pd.DataFrame({"A": [10,20,30,40,50], "B": [20, 30, 10, 40, 50], "C": [32, 234, 23, 23, 42523]})
>>> result = sm.ols(formula="A ~ B + C", data=df).fit()
>>> print(result.params)
Intercept 14.952480
B 0.401182
C 0.000352
dtype: float64
>>> print(result.summary())
OLS Regression Results
==============================================================================
Dep. Variable: A R-squared: 0.579
Model: OLS Adj. R-squared: 0.158
Method: Least Squares F-statistic: 1.375
Date: Thu, 14 Nov 2013 Prob (F-statistic): 0.421
Time: 20:04:30 Log-Likelihood: -18.178
No. Observations: 5 AIC: 42.36
Df Residuals: 2 BIC: 41.19
Df Model: 2
==============================================================================
coef std err t P>|t| [95.0% Conf. Int.]
------------------------------------------------------------------------------
Intercept 14.9525 17.764 0.842 0.489 -61.481 91.386
B 0.4012 0.650 0.617 0.600 -2.394 3.197
C 0.0004 0.001 0.650 0.583 -0.002 0.003
==============================================================================
Omnibus: nan Durbin-Watson: 1.061
Prob(Omnibus): nan Jarque-Bera (JB): 0.498
Skew: -0.123 Prob(JB): 0.780
Kurtosis: 1.474 Cond. No. 5.21e+04
==============================================================================
Warnings:
[1] The condition number is large, 5.21e+04. This might indicate that there are
strong multicollinearity or other numerical problems.
First, we need to import the router module from angular router and declare its alias name
import { Router } from '@angular/router'; ---> import
class AbcComponent implements OnInit(){
constructor(
private router: Router ---> decalre alias name
) { }
}
1. You can change query params by using "router.navigate" function and pass the query parameters
this.router.navigate([], { queryParams: {_id: "abc", day: "1", name: "dfd"}
});
It will update query params in the current i.e activated route
The below will redirect to abc page with _id, day and name as query params
this.router.navigate(['/abc'], { queryParams: {_id: "abc", day: "1", name: "dfd"} });
It will update query params in the "abc" route along with three query paramters
For fetching query params:-
import { ActivatedRoute } from '@angular/router'; //import activated routed
export class ABC implements OnInit {
constructor(
private route: ActivatedRoute //declare its alias name
) {}
ngOnInit(){
console.log(this.route.snapshot.queryParamMap.get('_id')); //this will fetch the query params
}
Just came across this trying to find a solution for the same problem. Implementing Paul's solution I've made a few tweaks to make this function properly.
var data = { 'venue[]' : []};
$("input:checked").each(function() {
data['venue[]'].push($(this).val());
});
In short the addition of input:checked as opposed to :checked limits the fields input into the array to just the checkboxes on the form. Paul is indeed correct with this
needing to be enclosed as $(this)
Check out umount2
:
Linux 2.1.116 added the umount2() system call, which, like umount(), unmounts a target, but allows additional flags controlling the behaviour of the operation:
MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. (Only for NFS mounts.) MNT_DETACH (since Linux 2.4.11) Perform a lazy unmount: make the mount point unavailable for new accesses, and actually perform the unmount when the mount point ceases to be busy. MNT_EXPIRE (since Linux 2.6.8) Mark the mount point as expired. If a mount point is not currently in use, then an initial call to umount2() with this flag fails with the error EAGAIN, but marks the mount point as expired. The mount point remains expired as long as it isn't accessed by any process. A second umount2() call specifying MNT_EXPIRE unmounts an expired mount point. This flag cannot be specified with either MNT_FORCE or MNT_DETACH. Return Value
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
Python 3.5, 2018
If you don't know what the encoding but the unicode parser is having issues you can open the file in Notepad++
and in the top bar select Encoding->Convert to ANSI
. Then you can write your python like this
with open('filepath', 'r', encoding='ANSI') as file:
for word in file.read().split():
print(word)
How about this:
from pandas import *
idx = Int64Index([171, 174, 173])
df = DataFrame(index = idx, data =([1,2,3]))
print df
It gives me:
0
171 1
174 2
173 3
Is this what you are looking for?
DefaultComboBoxModel dml= new DefaultComboBoxModel();
for (int i = 0; i < <ArrayList>.size(); i++) {
dml.addElement(<ArrayList>.get(i).getField());
}
<ComboBoxName>.setModel(dml);
Understandable code.Edit<>
with type as required.
Try to install gcc
and gcc-c++
, as Cmake works smooth with them.
yum install gcc gcc-c++
apt-get install cmake gcc g++
Then,
So you know the key, value pair that you want to delete in advance? It's just much clearer to do this, then:
table.delete(key);
for (K key: table.keySet()) {
// do whatever you need to do with the rest of the keys
}
Haven't seen this solution yet so here's how I did it without using read_csv:
df.rename(columns={'A':'','B':''})
If you rename all your column names to empty strings your table will return without a header.
And if you have a lot of columns in your table you can just create a dictionary first instead of renaming manually:
df_dict = dict.fromkeys(df.columns, '')
df.rename(columns = df_dict)
Simple utility method:
public static boolean isBetween(int value, int min, int max)
{
return((value > min) && (value < max));
}
After Docker Installation on Centos. While running below command I got below error.
[centos@aiops-dev-cassandra3 ~]$ docker run hello-world
docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.soc k/v1.40/containers/create: dial unix /var/run/docker.sock: connect: permission denied.
See 'docker run --help'.
Change Group and Permission for docker.socket
[centos@aiops-dev-cassandra3 ~]$ ls -l /lib/systemd/system/docker.socket
-rw-r--r--. 1 root root 197 Nov 13 07:25 /lib/systemd/system/docker.socket
[centos@aiops-dev-cassandra3 ~]$ sudo chgrp docker /lib/systemd/system/docker.socket
[centos@aiops-dev-cassandra3 ~]$ sudo chmod 666 /var/run/docker.sock
[centos@aiops-dev-cassandra3 ~]$ ls -lrth /var/run/docker.sock
srw-rw-rw-. 1 root docker 0 Nov 20 11:59 /var/run/docker.sock
[centos@aiops-dev-cassandra3 ~]$
Verify by using below docker command
[centos@aiops-dev-cassandra3 ~]$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:c3b4ada4687bbaa170745b3e4dd8ac3f194ca95b2d0518b417fb47e5879d9b5f
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
[centos@aiops-dev-cassandra3 ~]$
Add these two lines near the top of your batch file, all stdout and stderr after will be redirected to log.txt:
if not "%1"=="STDOUT_TO_FILE" %0 STDOUT_TO_FILE %* >log.txt 2>&1
shift /1
This works for me and you don't need the inline script:
Javascript:
$(document).ready(function() {
$('.showme').bind('click', function() {
var id=$(this).attr("id");
var num=$(this).attr("class");
var poststr="request="+num+"&moreinfo="+id;
$.ajax({
url:"testme.php",
cache:0,
data:poststr,
success:function(result){
document.getElementById("stuff").innerHTML=result;
}
});
});
});
HTML:
<div class='request_1 showme' id='rating_1'>More stuff 1</div>
<div class='request_2 showme' id='rating_2'>More stuff 2</div>
<div class='request_3 showme' id='rating_3'>More stuff 3</div>
<div id="stuff">Here is some stuff that will update when the links above are clicked</div>
The request is sent to testme.php:
header("Cache-Control: no-cache");
header("Pragma: nocache");
$request_id = preg_replace("/[^0-9]/","",$_REQUEST['request']);
$request_moreinfo = preg_replace("/[^0-9]/","",$_REQUEST['moreinfo']);
if($request_id=="1")
{
echo "show 1";
}
elseif($request_id=="2")
{
echo "show 2";
}
else
{
echo "show 3";
}
Perhaps replace
is what you are looking for:
> x = c(3, 2, 1, 0, 4, 0)
> replace(x, x==0, 1)
[1] 3 2 1 1 4 1
Or, if you don't have x
(any specific reason why not?):
replace(c(3, 2, 1, 0, 4, 0), c(3, 2, 1, 0, 4, 0)==0, 1)
Many people are familiar with gsub
, so you can also try either of the following:
as.numeric(gsub(0, 1, x))
as.numeric(gsub(0, 1, c(3, 2, 1, 0, 4, 0)))
After reading the comments, perhaps with
is an option:
with(data.frame(x = c(3, 2, 1, 0, 4, 0)), replace(x, x == 0, 1))
Can do this in jQuery. Try all options .height()
, .innerHeight()
or .outerHeight()
.
$('document').ready(function() {
$('#right_div').css({'height': $('#left_div').innerHeight()});
});
Example Screenshot
Hope this helps. Thanks!!
The problem with the PHP $_SERVER['HTTP_REFFERER'] is that it gives the fully qualified page url of the page that brought you to the parent page. That's not the same as the parent page, itself. Worse, sometimes there is no http_referer, because the person typed in the url of the parent page. So, if I get to your parent page from yahoo.com, then yahoo.com becomes the http_referer, not your page.
I found the same problem. I did the following:
docker run -ti devops -v /tmp:/tmp /bin/bash
When I change it to
docker run -ti -v /tmp:/tmp devops /bin/bash
it works fine.
You need to add your source files with git add
or the GUI equivalent so that Git will begin tracking them.
Use git status
to see what Git thinks about the files in any given directory.
Most of time it happen because two mysql-connector-java-3.0.14-production-bin.jar file. One in lib folder of tomcat and another in classpath of the project.
Just try to remove mysql-connector-java-3.0.14-production-bin.jar from lib folder.
This way it is working for me.
Put $_SESSION['login_time'] = time();
into the previous authentication page.
And the snipped below in every other page where you want to check the session time-out.
if(time() - $_SESSION['login_time'] >= 1800){
session_destroy(); // destroy session.
header("Location: logout.php");
die(); // See https://thedailywtf.com/articles/WellIntentioned-Destruction
//redirect if the page is inactive for 30 minutes
}
else {
$_SESSION['login_time'] = time();
// update 'login_time' to the last time a page containing this code was accessed.
}
Edit : This only works if you already used the tweaks in other posts, or disabled Garbage Collection, and want to manually check the session duration.
Don't forget to add die()
after a redirect, because some scripts/robots might ignore it. Also, directly destroying the session with session_destroy()
instead of relying on a redirect for that might be a better option, again, in case of a malicious client or a robot.
Type the following command to import sql data file:
$ mysql -u username -p -h localhost DATA-BASE-NAME < data.sql
In this example, import 'data.sql' file into 'blog' database using vivek as username:
$ mysql -u vivek -p -h localhost blog < data.sql
If you have a dedicated database server, replace localhost hostname with with actual server name or IP address as follows:
$ mysql -u username -p -h 202.54.1.10 databasename < data.sql
To export a database, use the following:
mysqldump -u username -p databasename > filename.sql
Note the <
and >
symbols in each case.
First, implement the MyData.equals(Object o)
and MyData.hashCode()
methods.
Once you implemented the equals
method, you can iterate over the lists as follows:
if(ListA == null && ListB == null)
return false;
if(ListA == null && ListB != null)
return true;
if(ListA != null && ListB == null)
return true;
int max = ListA.size() > ListB.size() ? ListA.size() : ListB.size();
for(int i = 0; i < max; i++) {
myData1 = ListA.get(i);
myData2 = ListB.get(i);
if(!myData1.equals(myData2)) {
return true;
}
}
return false;
Here is a way to determine the FQDN of a server based on the "Name" and "DistinguishedName". Works for multiple domains:
$server = Get-ADComputer serverName -Server domainName -Properties * | select Name, DistinguishedName
$domain = $server.DistinguishedName -split ","
$domain = $domain | ? {$_ -like 'DC=*'}
$domain = $domain -join "."
$domain = $domain -replace "DC="
$FQDN = $server.Name + "." + $domain
For information this comes under Item 48 - Avoid float and double when exact values are required, of Effective Java 2nd edition by Joshua Bloch. This book is jam packed with good stuff and definitely worth a look.
A solution I prefer would be:
const str = 'sometext-20202';
const slug = str.split('-').pop();
Where slug
would be your result
Similar situation. It was working. Then, I started to include pytables. At first view, no reason to errors. I decided to use another function, that has a domain constraint (elipse) and received the following error:
TypeError: 'numpy.float64' object cannot be interpreted as an integer
or
TypeError: 'numpy.float64' object is not iterable
The crazy thing: the previous function I was using, no code changed, started to return the same error. My intermediary function, already used was:
def MinMax(x, mini=0, maxi=1)
return max(min(x,mini), maxi)
The solution was avoid numpy
or math
:
def MinMax(x, mini=0, maxi=1)
x = [x_aux if x_aux > mini else mini for x_aux in x]
x = [x_aux if x_aux < maxi else maxi for x_aux in x]
return max(min(x,mini), maxi)
Then, everything calm again. It was like one library possessed max
and min
!
If you don't want to change the value of the original variable after passing it into a function, the function should be constructed with a "pass by value" parameter.
Then the function will have ONLY the value but not the address of the passed in variable. Without the variable's address, the code inside the function cannot change the variable value as seen from the outside of the function.
But if you want to give the function the ability to change the value of the variable as seen from the outside, you need to use pass by reference. As both the value and the address (reference) are passed in and available inside the function.
I had the same problem, my aspnet button's click was not firing. It turns out that some where on other part of the page has an input with html "required" attribute on.
This might be sound strange, but once I remove the required attribute, the button just works normally.
Follow this:
Automator.app
Application
Show library
in the toolbar (if hidden)Run shell script
(from the Actions/Utilities
)save somewhere (for example you can make an Applications
folder in your HOME, you will get an your_name.app
)
go to System Preferences
-> Accounts
-> Login items
EDIT:
I've recently earned a "Good answer" badge for this answer. While my solution is simple and working, the cleanest way to run any program or shell script at login time is described in @trisweb's answer, unless, you want interactivity.
With automator solution you can do things like next:
so, asking to run a script or quit the app, asking passwords, running other automator workflows at login time, conditionally run applications at login time and so on...
how to determine if a commit with particular hash have been pushed to the origin already?
# list remote branches that contain $commit
git branch -r --contains $commit
You failed to find an app that does this because it is not possible.
The documentation clearly states (here):
Note: You can play back the audio data only to the standard output device. Currently, that is the mobile device speaker or a Bluetooth headset. You cannot play sound files in the conversation audio during a call.
The reason behind this decision has probably something to do with security: there are several scenarios where this capability could be used for cons.
(the OP is highly similar to this, hence I'm basically giving the same answer)
open your /etc/paths file, put /usr/local/bin on top of /usr/bin
$ sudo vi /etc/paths
/usr/local/bin
/usr/local/sbin
/usr/bin
/bin
/usr/sbin
/sbin
and Restart the terminal, @mmel
To start server locally paste the below code in package.json and run npm start in command line.
"scripts": {
"start": "http-server -c-1 -p 8081"
},
It just so happens that I wrote a BigFraction class not too long ago, for Project Euler problems. It keeps a BigInteger numerator and denominator, so it'll never overflow. But it'll be a tad slow for a lot of operations that you know will never overflow.. anyway, use it if you want it. I've been dying to show this off somehow. :)
Edit: Latest and greatest version of this code, including unit tests is now hosted on GitHub and also available via Maven Central. I'm leaving my original code here so that this answer isn't just a link...
import java.math.*;
/**
* Arbitrary-precision fractions, utilizing BigIntegers for numerator and
* denominator. Fraction is always kept in lowest terms. Fraction is
* immutable, and guaranteed not to have a null numerator or denominator.
* Denominator will always be positive (so sign is carried by numerator,
* and a zero-denominator is impossible).
*/
public final class BigFraction extends Number implements Comparable<BigFraction>
{
private static final long serialVersionUID = 1L; //because Number is Serializable
private final BigInteger numerator;
private final BigInteger denominator;
public final static BigFraction ZERO = new BigFraction(BigInteger.ZERO, BigInteger.ONE, true);
public final static BigFraction ONE = new BigFraction(BigInteger.ONE, BigInteger.ONE, true);
/**
* Constructs a BigFraction with given numerator and denominator. Fraction
* will be reduced to lowest terms. If fraction is negative, negative sign will
* be carried on numerator, regardless of how the values were passed in.
*/
public BigFraction(BigInteger numerator, BigInteger denominator)
{
if(numerator == null)
throw new IllegalArgumentException("Numerator is null");
if(denominator == null)
throw new IllegalArgumentException("Denominator is null");
if(denominator.equals(BigInteger.ZERO))
throw new ArithmeticException("Divide by zero.");
//only numerator should be negative.
if(denominator.signum() < 0)
{
numerator = numerator.negate();
denominator = denominator.negate();
}
//create a reduced fraction
BigInteger gcd = numerator.gcd(denominator);
this.numerator = numerator.divide(gcd);
this.denominator = denominator.divide(gcd);
}
/**
* Constructs a BigFraction from a whole number.
*/
public BigFraction(BigInteger numerator)
{
this(numerator, BigInteger.ONE, true);
}
public BigFraction(long numerator, long denominator)
{
this(BigInteger.valueOf(numerator), BigInteger.valueOf(denominator));
}
public BigFraction(long numerator)
{
this(BigInteger.valueOf(numerator), BigInteger.ONE, true);
}
/**
* Constructs a BigFraction from a floating-point number.
*
* Warning: round-off error in IEEE floating point numbers can result
* in answers that are unexpected. For example,
* System.out.println(new BigFraction(1.1))
* will print:
* 2476979795053773/2251799813685248
*
* This is because 1.1 cannot be expressed exactly in binary form. The
* given fraction is exactly equal to the internal representation of
* the double-precision floating-point number. (Which, for 1.1, is:
* (-1)^0 * 2^0 * (1 + 0x199999999999aL / 0x10000000000000L).)
*
* NOTE: In many cases, BigFraction(Double.toString(d)) may give a result
* closer to what the user expects.
*/
public BigFraction(double d)
{
if(Double.isInfinite(d))
throw new IllegalArgumentException("double val is infinite");
if(Double.isNaN(d))
throw new IllegalArgumentException("double val is NaN");
//special case - math below won't work right for 0.0 or -0.0
if(d == 0)
{
numerator = BigInteger.ZERO;
denominator = BigInteger.ONE;
return;
}
final long bits = Double.doubleToLongBits(d);
final int sign = (int)(bits >> 63) & 0x1;
final int exponent = ((int)(bits >> 52) & 0x7ff) - 0x3ff;
final long mantissa = bits & 0xfffffffffffffL;
//number is (-1)^sign * 2^(exponent) * 1.mantissa
BigInteger tmpNumerator = BigInteger.valueOf(sign==0 ? 1 : -1);
BigInteger tmpDenominator = BigInteger.ONE;
//use shortcut: 2^x == 1 << x. if x is negative, shift the denominator
if(exponent >= 0)
tmpNumerator = tmpNumerator.multiply(BigInteger.ONE.shiftLeft(exponent));
else
tmpDenominator = tmpDenominator.multiply(BigInteger.ONE.shiftLeft(-exponent));
//1.mantissa == 1 + mantissa/2^52 == (2^52 + mantissa)/2^52
tmpDenominator = tmpDenominator.multiply(BigInteger.valueOf(0x10000000000000L));
tmpNumerator = tmpNumerator.multiply(BigInteger.valueOf(0x10000000000000L + mantissa));
BigInteger gcd = tmpNumerator.gcd(tmpDenominator);
numerator = tmpNumerator.divide(gcd);
denominator = tmpDenominator.divide(gcd);
}
/**
* Constructs a BigFraction from two floating-point numbers.
*
* Warning: round-off error in IEEE floating point numbers can result
* in answers that are unexpected. See BigFraction(double) for more
* information.
*
* NOTE: In many cases, BigFraction(Double.toString(numerator) + "/" + Double.toString(denominator))
* may give a result closer to what the user expects.
*/
public BigFraction(double numerator, double denominator)
{
if(denominator == 0)
throw new ArithmeticException("Divide by zero.");
BigFraction tmp = new BigFraction(numerator).divide(new BigFraction(denominator));
this.numerator = tmp.numerator;
this.denominator = tmp.denominator;
}
/**
* Constructs a new BigFraction from the given BigDecimal object.
*/
public BigFraction(BigDecimal d)
{
this(d.scale() < 0 ? d.unscaledValue().multiply(BigInteger.TEN.pow(-d.scale())) : d.unscaledValue(),
d.scale() < 0 ? BigInteger.ONE : BigInteger.TEN.pow(d.scale()));
}
public BigFraction(BigDecimal numerator, BigDecimal denominator)
{
if(denominator.equals(BigDecimal.ZERO))
throw new ArithmeticException("Divide by zero.");
BigFraction tmp = new BigFraction(numerator).divide(new BigFraction(denominator));
this.numerator = tmp.numerator;
this.denominator = tmp.denominator;
}
/**
* Constructs a BigFraction from a String. Expected format is numerator/denominator,
* but /denominator part is optional. Either numerator or denominator may be a floating-
* point decimal number, which in the same format as a parameter to the
* <code>BigDecimal(String)</code> constructor.
*
* @throws NumberFormatException if the string cannot be properly parsed.
*/
public BigFraction(String s)
{
int slashPos = s.indexOf('/');
if(slashPos < 0)
{
BigFraction res = new BigFraction(new BigDecimal(s));
this.numerator = res.numerator;
this.denominator = res.denominator;
}
else
{
BigDecimal num = new BigDecimal(s.substring(0, slashPos));
BigDecimal den = new BigDecimal(s.substring(slashPos+1, s.length()));
BigFraction res = new BigFraction(num, den);
this.numerator = res.numerator;
this.denominator = res.denominator;
}
}
/**
* Returns this + f.
*/
public BigFraction add(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
//n1/d1 + n2/d2 = (n1*d2 + d1*n2)/(d1*d2)
return new BigFraction(numerator.multiply(f.denominator).add(denominator.multiply(f.numerator)),
denominator.multiply(f.denominator));
}
/**
* Returns this + b.
*/
public BigFraction add(BigInteger b)
{
if(b == null)
throw new IllegalArgumentException("Null argument");
//n1/d1 + n2 = (n1 + d1*n2)/d1
return new BigFraction(numerator.add(denominator.multiply(b)),
denominator, true);
}
/**
* Returns this + n.
*/
public BigFraction add(long n)
{
return add(BigInteger.valueOf(n));
}
/**
* Returns this - f.
*/
public BigFraction subtract(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
return new BigFraction(numerator.multiply(f.denominator).subtract(denominator.multiply(f.numerator)),
denominator.multiply(f.denominator));
}
/**
* Returns this - b.
*/
public BigFraction subtract(BigInteger b)
{
if(b == null)
throw new IllegalArgumentException("Null argument");
return new BigFraction(numerator.subtract(denominator.multiply(b)),
denominator, true);
}
/**
* Returns this - n.
*/
public BigFraction subtract(long n)
{
return subtract(BigInteger.valueOf(n));
}
/**
* Returns this * f.
*/
public BigFraction multiply(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
return new BigFraction(numerator.multiply(f.numerator), denominator.multiply(f.denominator));
}
/**
* Returns this * b.
*/
public BigFraction multiply(BigInteger b)
{
if(b == null)
throw new IllegalArgumentException("Null argument");
return new BigFraction(numerator.multiply(b), denominator);
}
/**
* Returns this * n.
*/
public BigFraction multiply(long n)
{
return multiply(BigInteger.valueOf(n));
}
/**
* Returns this / f.
*/
public BigFraction divide(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
if(f.numerator.equals(BigInteger.ZERO))
throw new ArithmeticException("Divide by zero");
return new BigFraction(numerator.multiply(f.denominator), denominator.multiply(f.numerator));
}
/**
* Returns this / b.
*/
public BigFraction divide(BigInteger b)
{
if(b == null)
throw new IllegalArgumentException("Null argument");
if(b.equals(BigInteger.ZERO))
throw new ArithmeticException("Divide by zero");
return new BigFraction(numerator, denominator.multiply(b));
}
/**
* Returns this / n.
*/
public BigFraction divide(long n)
{
return divide(BigInteger.valueOf(n));
}
/**
* Returns this^exponent.
*/
public BigFraction pow(int exponent)
{
if(exponent == 0)
return BigFraction.ONE;
else if (exponent == 1)
return this;
else if (exponent < 0)
return new BigFraction(denominator.pow(-exponent), numerator.pow(-exponent), true);
else
return new BigFraction(numerator.pow(exponent), denominator.pow(exponent), true);
}
/**
* Returns 1/this.
*/
public BigFraction reciprocal()
{
if(this.numerator.equals(BigInteger.ZERO))
throw new ArithmeticException("Divide by zero");
return new BigFraction(denominator, numerator, true);
}
/**
* Returns the complement of this fraction, which is equal to 1 - this.
* Useful for probabilities/statistics.
*/
public BigFraction complement()
{
return new BigFraction(denominator.subtract(numerator), denominator, true);
}
/**
* Returns -this.
*/
public BigFraction negate()
{
return new BigFraction(numerator.negate(), denominator, true);
}
/**
* Returns -1, 0, or 1, representing the sign of this fraction.
*/
public int signum()
{
return numerator.signum();
}
/**
* Returns the absolute value of this.
*/
public BigFraction abs()
{
return (signum() < 0 ? negate() : this);
}
/**
* Returns a string representation of this, in the form
* numerator/denominator.
*/
public String toString()
{
return numerator.toString() + "/" + denominator.toString();
}
/**
* Returns if this object is equal to another object.
*/
public boolean equals(Object o)
{
if(!(o instanceof BigFraction))
return false;
BigFraction f = (BigFraction)o;
return numerator.equals(f.numerator) && denominator.equals(f.denominator);
}
/**
* Returns a hash code for this object.
*/
public int hashCode()
{
//using the method generated by Eclipse, but streamlined a bit..
return (31 + numerator.hashCode())*31 + denominator.hashCode();
}
/**
* Returns a negative, zero, or positive number, indicating if this object
* is less than, equal to, or greater than f, respectively.
*/
public int compareTo(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
//easy case: this and f have different signs
if(signum() != f.signum())
return signum() - f.signum();
//next easy case: this and f have the same denominator
if(denominator.equals(f.denominator))
return numerator.compareTo(f.numerator);
//not an easy case, so first make the denominators equal then compare the numerators
return numerator.multiply(f.denominator).compareTo(denominator.multiply(f.numerator));
}
/**
* Returns the smaller of this and f.
*/
public BigFraction min(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
return (this.compareTo(f) <= 0 ? this : f);
}
/**
* Returns the maximum of this and f.
*/
public BigFraction max(BigFraction f)
{
if(f == null)
throw new IllegalArgumentException("Null argument");
return (this.compareTo(f) >= 0 ? this : f);
}
/**
* Returns a positive BigFraction, greater than or equal to zero, and less than one.
*/
public static BigFraction random()
{
return new BigFraction(Math.random());
}
public final BigInteger getNumerator() { return numerator; }
public final BigInteger getDenominator() { return denominator; }
//implementation of Number class. may cause overflow.
public byte byteValue() { return (byte) Math.max(Byte.MIN_VALUE, Math.min(Byte.MAX_VALUE, longValue())); }
public short shortValue() { return (short)Math.max(Short.MIN_VALUE, Math.min(Short.MAX_VALUE, longValue())); }
public int intValue() { return (int) Math.max(Integer.MIN_VALUE, Math.min(Integer.MAX_VALUE, longValue())); }
public long longValue() { return Math.round(doubleValue()); }
public float floatValue() { return (float)doubleValue(); }
public double doubleValue() { return toBigDecimal(18).doubleValue(); }
/**
* Returns a BigDecimal representation of this fraction. If possible, the
* returned value will be exactly equal to the fraction. If not, the BigDecimal
* will have a scale large enough to hold the same number of significant figures
* as both numerator and denominator, or the equivalent of a double-precision
* number, whichever is more.
*/
public BigDecimal toBigDecimal()
{
//Implementation note: A fraction can be represented exactly in base-10 iff its
//denominator is of the form 2^a * 5^b, where a and b are nonnegative integers.
//(In other words, if there are no prime factors of the denominator except for
//2 and 5, or if the denominator is 1). So to determine if this denominator is
//of this form, continually divide by 2 to get the number of 2's, and then
//continually divide by 5 to get the number of 5's. Afterward, if the denominator
//is 1 then there are no other prime factors.
//Note: number of 2's is given by the number of trailing 0 bits in the number
int twos = denominator.getLowestSetBit();
BigInteger tmpDen = denominator.shiftRight(twos); // x / 2^n === x >> n
final BigInteger FIVE = BigInteger.valueOf(5);
int fives = 0;
BigInteger[] divMod = null;
//while(tmpDen % 5 == 0) { fives++; tmpDen /= 5; }
while(BigInteger.ZERO.equals((divMod = tmpDen.divideAndRemainder(FIVE))[1]))
{
fives++;
tmpDen = divMod[0];
}
if(BigInteger.ONE.equals(tmpDen))
{
//This fraction will terminate in base 10, so it can be represented exactly as
//a BigDecimal. We would now like to make the fraction of the form
//unscaled / 10^scale. We know that 2^x * 5^x = 10^x, and our denominator is
//in the form 2^twos * 5^fives. So use max(twos, fives) as the scale, and
//multiply the numerator and deminator by the appropriate number of 2's or 5's
//such that the denominator is of the form 2^scale * 5^scale. (Of course, we
//only have to actually multiply the numerator, since all we need for the
//BigDecimal constructor is the scale.
BigInteger unscaled = numerator;
int scale = Math.max(twos, fives);
if(twos < fives)
unscaled = unscaled.shiftLeft(fives - twos); //x * 2^n === x << n
else if (fives < twos)
unscaled = unscaled.multiply(FIVE.pow(twos - fives));
return new BigDecimal(unscaled, scale);
}
//else: this number will repeat infinitely in base-10. So try to figure out
//a good number of significant digits. Start with the number of digits required
//to represent the numerator and denominator in base-10, which is given by
//bitLength / log[2](10). (bitLenth is the number of digits in base-2).
final double LG10 = 3.321928094887362; //Precomputed ln(10)/ln(2), a.k.a. log[2](10)
int precision = Math.max(numerator.bitLength(), denominator.bitLength());
precision = (int)Math.ceil(precision / LG10);
//If the precision is less than 18 digits, use 18 digits so that the number
//will be at least as accurate as a cast to a double. For example, with
//the fraction 1/3, precision will be 1, giving a result of 0.3. This is
//quite a bit different from what a user would expect.
if(precision < 18)
precision = 18;
return toBigDecimal(precision);
}
/**
* Returns a BigDecimal representation of this fraction, with a given precision.
* @param precision the number of significant figures to be used in the result.
*/
public BigDecimal toBigDecimal(int precision)
{
return new BigDecimal(numerator).divide(new BigDecimal(denominator), new MathContext(precision, RoundingMode.HALF_EVEN));
}
//--------------------------------------------------------------------------
// PRIVATE FUNCTIONS
//--------------------------------------------------------------------------
/**
* Private constructor, used when you can be certain that the fraction is already in
* lowest terms. No check is done to reduce numerator/denominator. A check is still
* done to maintain a positive denominator.
*
* @param throwaway unused variable, only here to signal to the compiler that this
* constructor should be used.
*/
private BigFraction(BigInteger numerator, BigInteger denominator, boolean throwaway)
{
if(denominator.signum() < 0)
{
this.numerator = numerator.negate();
this.denominator = denominator.negate();
}
else
{
this.numerator = numerator;
this.denominator = denominator;
}
}
}
Open the httpd.conf file and search for
"rewrite"
, then remove
"#"
at the starting of the line,so the line looks like.
LoadModule rewrite_module modules/mod_rewrite.so
then restart the wamp.
write command in terminal:
vi ~/.vimrc
for set the number:
write set number
for remove number:
write set nonumber
The "unchecked or unsafe operations" warning was added when java added Generics, if I remember correctly. It's usually asking you to be more explicit about types, in one way or another.
For example. the code ArrayList foo = new ArrayList();
triggers that warning because javac is looking for ArrayList<String> foo = new ArrayList<String>();
Hehe, curious. I think this is an "intentianal bug", so to speak.
The underlying reason is how the Integer class is written. Basically, parseInt is "optimized" for positive numbers. When it parses the string, it builds the result cumulatively, but negated. Then it flips the sign of the end-result.
Example:
66 = 0x42
parsed like:
4*(-1) = -4
-4 * 16 = -64 (hex 4 parsed)
-64 - 2 = -66 (hex 2 parsed)
return -66 * (-1) = 66
Now, let's look at your example FFFF8000
16*(-1) = -16 (first F parsed)
-16*16 = -256
-256 - 16 = -272 (second F parsed)
-272 * 16 = -4352
-4352 - 16 = -4368 (third F parsed)
-4352 * 16 = -69888
-69888 - 16 = -69904 (forth F parsed)
-69904 * 16 = -1118464
-1118464 - 8 = -1118472 (8 parsed)
-1118464 * 16 = -17895552
-17895552 - 0 = -17895552 (first 0 parsed)
Here it blows up since -17895552 < -Integer.MAX_VALUE / 16 (-134217728).
Attempting to execute the next logical step in the chain (-17895552 * 16)
would cause an integer overflow error.
Edit (addition): in order for the parseInt() to work "consistently" for -Integer.MAX_VALUE <= n <= Integer.MAX_VALUE, they would have had to implement logic to "rotate" when reaching -Integer.MAX_VALUE in the cumulative result, starting over at the max-end of the integer range and continuing downwards from there. Why they did not do this, one would have to ask Josh Bloch or whoever implemented it in the first place. It might just be an optimization.
However,
Hex=Integer.toHexString(Integer.MAX_VALUE);
System.out.println(Hex);
System.out.println(Integer.parseInt(Hex.toUpperCase(), 16));
works just fine, for just this reason. In the sourcee for Integer you can find this comment.
// Accumulating negatively avoids surprises near MAX_VALUE
Handlebars can use an array as the context. You can use .
as the root of the data. So you can loop through your array data with {{#each .}}
.
var data = [_x000D_
{_x000D_
Category: "General",_x000D_
DocumentList: [_x000D_
{_x000D_
DocumentName: "Document Name 1 - General",_x000D_
DocumentLocation: "Document Location 1 - General"_x000D_
},_x000D_
{_x000D_
DocumentName: "Document Name 2 - General",_x000D_
DocumentLocation: "Document Location 2 - General"_x000D_
}_x000D_
]_x000D_
},_x000D_
{_x000D_
Category: "Unit Documents",_x000D_
DocumentList: [_x000D_
{_x000D_
DocumentName: "Document Name 1 - Unit Documents",_x000D_
DocumentList: "Document Location 1 - Unit Documents"_x000D_
}_x000D_
]_x000D_
},_x000D_
{_x000D_
Category: "Minutes"_x000D_
}_x000D_
];_x000D_
_x000D_
$(function() {_x000D_
var source = $("#document-template").html();_x000D_
var template = Handlebars.compile(source);_x000D_
var html = template(data);_x000D_
$('#DocumentResults').html(html);_x000D_
});
_x000D_
.row {_x000D_
border: 1px solid red;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.js"></script>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>_x000D_
<div id="DocumentResults">pos</div>_x000D_
<script id="document-template" type="text/x-handlebars-template">_x000D_
<div>_x000D_
{{#each .}}_x000D_
<div class="row">_x000D_
<div class="col-md-12">_x000D_
<h2>{{Category}}</h2>_x000D_
{{#DocumentList}}_x000D_
<p>{{DocumentName}} at {{DocumentLocation}}</p>_x000D_
{{/DocumentList}}_x000D_
</div>_x000D_
</div>_x000D_
{{/each}}_x000D_
</div>_x000D_
</script>
_x000D_
Use KeyPressEventArgs,
Private Sub ComboBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboBox1.KeyPress
e.Handled = True
End Sub
I had the same problem and the cause was That at time of returning a string in your backend (spring) you might be returning as return "spring used"; But this isn't parsed right according to spring. Instead use return "\" spring used \""; -Peace out
Why can't you just check it yourself and throw an exception if that is what you want.
try {
for (int i = 0; i < tab.length; i++) {
tab[i] = 1.0 / tab[i];
if (tab[i] == Double.POSITIVE_INFINITY ||
tab[i] == Double.NEGATIVE_INFINITY)
throw new ArithmeticException();
}
} catch (ArithmeticException ae) {
System.out.println("ArithmeticException occured!");
}
New awesome solution with JavaScript Destructuring:
let obj = {
"key1": "value1",
"key2": "value2",
"key3": "value3",
};
let {key1, key2, key3, key4} = obj;
// key1 = "value1"
// key2 = "value2"
// key3 = "value3"
// key4 = undefined
// Can easily use `if` here on key4
if(!key4) { console.log("key not present"); } // Key not present
The parameter of exit should qualify if the execution of the program went good or bad. It's a sort of heredity from older programming languages where it's useful to know if something went wrong and what went wrong.
Exit code is
0
when execution went fine;1
, -1
, whatever != 0
when some error occurred, you can use different values for different kind of errors.If I'm correct exit codes used to be just positive numbers (I mean in UNIX) and according to range:
1-127
are user defined codes (so generated by calling exit(n)
)128-255
are codes generated by termination due to different unix signals like SIGSEGV or SIGTERMBut I don't think you should care while coding on Java, it's just a bit of information. It's useful if you plan to make your programs interact with standard tools.
The parent directory of an included file would be
dirname(getcwd())
e.g. the file is /var/www/html/folder/inc/file.inc.php which is included in /var/www/html/folder/index.php
then by calling /file/index.php
getcwd() is /var/www/html/folder
__DIR__ is /var/www/html/folder/inc
so dirname(__DIR__) is /var/www/html/folder
but what we want is /var/www/html which is dirname(getcwd())
This can happen if you don't attach your dataset.
You can disable/enable pagers for specific outputs in the global configuration as well:
git config --global pager.diff false
Or to set the core.pager option, just provide an empty string:
git config --global core.pager ''
This is better in my opinion than setting it to cat
as you say.
download required .ttf file
add the .ttf file under copy bundle resource, double check whether the ttf file is added under resource
In info.pllist add the ttf file name as it is.
now open the font book add the .ttf file in the font book, select information icon there you find the postscript name.
now give the postscript name in the place of font name
DailyRollingFileAppender is what you exactly searching for.
<appender name="roll" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="application.log" />
<param name="DatePattern" value=".yyyy-MM-dd" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MMM-dd HH:mm:ss,SSS} [%t] %c %x%n %-5p %m%n"/>
</layout>
</appender>
from webdriverdownloader import GeckoDriverDownloader # vs ChromeDriverDownloader vs OperaChromiumDriverDownloader
gdd = GeckoDriverDownloader()
gdd.download_and_install()
#gdd.download_and_install("v0.19.0")
This will get you the path to your gekodriver.exe on Windows.
from selenium import webdriver
driver = webdriver.Firefox(executable_path=r'C:\\Users\\username\\\bin\\geckodriver.exe')
driver.get('https://www.amazon.com/')
For both / and \:
window.location.pathname.replace(/[^\\\/]*$/, '');
To return without the trailing slash, do:
window.location.pathname.replace(/[\\\/][^\\\/]*$/, '');
You can use Boost demangle to accomplish a nice looking name:
#include <boost/units/detail/utility.hpp>
and something like
To_main_msg_evt ev("Failed to initialize cards in " + boost::units::detail::demangle(typeid(*_IO_card.get()).name()) + ".\n", true, this);
1) What is the difference between awk and sed ?
Both are tools that transform text. BUT awk can do more things besides just manipulating text. Its a programming language by itself with most of the things you learn in programming, like arrays, loops, if/else flow control etc You can "program" in sed as well, but you won't want to maintain the code written in it.
2) What kind of application are best use cases for sed and awk tools ?
Conclusion: Use sed for very simple text parsing. Anything beyond that, awk is better. In fact, you can ditch sed altogether and just use awk. Since their functions overlap and awk can do more, just use awk. You will reduce your learning curve as well.
You can use this:
SELECT REPLACE(LTRIM(REPLACE('000010A', '0', ' ')),' ', '0')
You could do
telnet stackoverflow.com 80
And then paste
GET /questions HTTP/1.0
Host: stackoverflow.com
# add the 2 empty lines above but not this one
Here is a transcript
$ telnet stackoverflow.com 80
Trying 151.101.65.69...
Connected to stackoverflow.com.
Escape character is '^]'.
GET /questions HTTP/1.0
Host: stackoverflow.com
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
...
If you are using Babel then Unicode support is already available.
I also released a plugin which transforms your source code such that you can write regular expressions like /^\p{L}+$/
. These will then be transformed into something that browsers understand.
Here is the project page of the plugin:
You can use \n
to concatenate words and then apply this style to container div.
style="white-space: pre;"
More info can be found at https://developer.mozilla.org/en-US/docs/Web/CSS/white-space
<p style="white-space: pre;">_x000D_
This is normal text._x000D_
</p>_x000D_
<p style="white-space: pre;">_x000D_
This _x000D_
text _x000D_
contains _x000D_
new lines._x000D_
</p>
_x000D_
int maxValue = 0;
int mKey = 0;
for(Integer key: map.keySet()){
if(map.get(key) > maxValue){
maxValue = map.get(key);
mKey = key;
}
}
System.out.println("Max Value " + maxValue + " is associated with " + mKey + " key");
The proper JPA query format would be:
el.name IN :inclList
If you're using an older version of Hibernate as your provider you have to write:
el.name IN (:inclList)
but that is a bug (HHH-5126) (EDIT: which has been resolved by now).
To install wheel packages in python 2.7x:
Install python 2.7x (i would recommend python 2.78) - download the appropriate python binary for your version of windows . You can download python 2.78 at this site https://www.python.org/download/releases/2.7.8/ -I would recommend installing the graphical Tk module, and including python 2.78 in the windows path (environment variables) during installation.
Install get-pip.py and setuptools Download the installer at https://bootstrap.pypa.io/get-pip.py Double click the above file to run it. It will install pip and setuptools [or update them, if you have an earlier version of either]
-Double click the above file and wait - it will open a black window and print will scroll across the screen as it downloads and installs [or updates] pip and setuptools --->when it finishes the window will close.
A-type cd c:\python27\scripts [or cd \scripts ]
B-type pip install -u Eg to install pyside, type pip install -u pyside
Wait - it will state 'downloading PySide or -->it will download and install the appropriate version of the python package [the one that corresponds to your version of python and windows.]
Note - if you have downloaded the .whl file and saved it locally on your hard drive, type in
pip install --no-index --find-links=localpathtowheelfile packagename
**to install a previously downloaded wheel package you need to type in the following command pip install --no-index --find-links=localpathtowheelfile packagename
I hear that this can be fixed by overwriting your /usr/share/terminfo
with one from the computer of somebody with a working install of Lion. I can't confirm whether this works or not, and unfortunately I haven't upgraded yet, so I can't provide you with that file.
Issue the following command,the way to run specified logrotate:
logrotate -vf /etc/logrotate.d/custom
Options:
-v :show the process
-f :forcing run
custom :user-defined log setting
eg: mongodb-log
# mongodb-log rotate
/data/var/log/mongodb/mongod.log {
daily
dateext
rotate 30
copytruncate
missingok
}
Thank Mathias Lin, tested and it works!
In addition, sample implementation of Mathias's method in activity can be as follows.
public class DirectionMapActivity extends MapActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.directionmap);
MapView mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
String locationProvider = LocationManager.NETWORK_PROVIDER;
Location lastKnownLocation = locationManager.getLastKnownLocation(locationProvider);
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.google.com/maps?f=d&hl=en");
urlString.append("&saddr=");//from
urlString.append( Double.toString(lastKnownLocation.getLatitude() ));
urlString.append(",");
urlString.append( Double.toString(lastKnownLocation.getLongitude() ));
urlString.append("&daddr=");//to
urlString.append( Double.toString((double)dest[0]/1.0E6 ));
urlString.append(",");
urlString.append( Double.toString((double)dest[1]/1.0E6 ));
urlString.append("&ie=UTF8&0&om=0&output=kml");
try{
// setup the url
URL url = new URL(urlString.toString());
// create the factory
SAXParserFactory factory = SAXParserFactory.newInstance();
// create a parser
SAXParser parser = factory.newSAXParser();
// create the reader (scanner)
XMLReader xmlreader = parser.getXMLReader();
// instantiate our handler
NavigationSaxHandler navSaxHandler = new NavigationSaxHandler();
// assign our handler
xmlreader.setContentHandler(navSaxHandler);
// get our data via the url class
InputSource is = new InputSource(url.openStream());
// perform the synchronous parse
xmlreader.parse(is);
// get the results - should be a fully populated RSSFeed instance, or null on error
NavigationDataSet ds = navSaxHandler.getParsedData();
// draw path
drawPath(ds, Color.parseColor("#add331"), mapView );
// find boundary by using itemized overlay
GeoPoint destPoint = new GeoPoint(dest[0],dest[1]);
GeoPoint currentPoint = new GeoPoint( new Double(lastKnownLocation.getLatitude()*1E6).intValue()
,new Double(lastKnownLocation.getLongitude()*1E6).intValue() );
Drawable dot = this.getResources().getDrawable(R.drawable.pixel);
MapItemizedOverlay bgItemizedOverlay = new MapItemizedOverlay(dot,this);
OverlayItem currentPixel = new OverlayItem(destPoint, null, null );
OverlayItem destPixel = new OverlayItem(currentPoint, null, null );
bgItemizedOverlay.addOverlay(currentPixel);
bgItemizedOverlay.addOverlay(destPixel);
// center and zoom in the map
MapController mc = mapView.getController();
mc.zoomToSpan(bgItemizedOverlay.getLatSpanE6()*2,bgItemizedOverlay.getLonSpanE6()*2);
mc.animateTo(new GeoPoint(
(currentPoint.getLatitudeE6() + destPoint.getLatitudeE6()) / 2
, (currentPoint.getLongitudeE6() + destPoint.getLongitudeE6()) / 2));
} catch(Exception e) {
Log.d("DirectionMap","Exception parsing kml.");
}
}
// and the rest of the methods in activity, e.g. drawPath() etc...
MapItemizedOverlay.java
public class MapItemizedOverlay extends ItemizedOverlay{
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
private Context mContext;
public MapItemizedOverlay(Drawable defaultMarker, Context context) {
super(boundCenterBottom(defaultMarker));
mContext = context;
}
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
@Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i);
}
@Override
public int size() {
return mOverlays.size();
}
}
Pandas is based on NumPy arrays. The key to speed with NumPy arrays is to perform your operations on the whole array at once, never row-by-row or item-by-item.
For example, if close
is a 1-d array, and you want the day-over-day percent change,
pct_change = close[1:]/close[:-1]
This computes the entire array of percent changes as one statement, instead of
pct_change = []
for row in close:
pct_change.append(...)
So try to avoid the Python loop for i, row in enumerate(...)
entirely, and
think about how to perform your calculations with operations on the entire array (or dataframe) as a whole, rather than row-by-row.
This worked for me on mac
git clone https://[email protected]:username/repo_name
[Taken from http://javarevisited.blogspot.com/2011/05/top-10-tips-on-logging-in-java.html]
DEBUG is the lowest restricted java logging level and we should write everything we need to debug an application, this java logging mode should only be used on Development and Testing environment and must not be used in production environment.
INFO is more restricted than DEBUG java logging level and we should log messages which are informative purpose like Server has been started, Incoming messages, outgoing messages etc in INFO level logging in java.
WARN is more restricted than INFO java logging level and used to log warning sort of messages e.g. Connection lost between client and server. Database connection lost, Socket reaching to its limit. These messages and java logging level are almost important because you can setup alert on these logging messages in java and let your support team monitor health of your java application and react on this warning messages. In Summary WARN level is used to log warning message for logging in Java.
ERROR is the more restricted java logging level than WARN and used to log Errors and Exception, you can also setup alert on this java logging level and alert monitoring team to react on this messages. ERROR is serious for logging in Java and you should always print it.
FATAL java logging level designates very severe error events that will presumably lead the application to abort. After this mostly your application crashes and stopped.
OFF java logging level has the highest possible rank and is intended to turn off logging in Java.
The problem must be with the parameters you are passing(You must be passing blank parameters). For example : http://www.myurl.com?id=5&name= Check if you are handling this at the server you are calling.
use git revert https://git-scm.com/docs/git-revert .It will revert all code then you can do next commit.Then head will point to that last commit. reverted commits never delete but it will not affect on you last commit.
For me this message:
org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public org.package.MyClass(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument ''. Might be it doesn't exist, may be it is not visible (public).
meant "in my wicket unit test at the top you have to manually add that bean in like"
appContext.putBean(myClass);
You also need to be sure that returned bean is not empty (and can be serialized by Jackson). In my particular case I tried to return an instance of an object without getters and setters and without any jackson annotation and with fields equals to null. I got following message:
com.fasterxml.jackson.databind.JsonMappingException:
No serializer found for class com.foo.bar.Baz and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) )
int myInt = 65;
char myChar = (char)myInt; // myChar should now be the letter A
char[20] myString = {0}; // make an empty string.
myString[0] = myChar;
myString[1] = myChar; // Now myString is "AA"
This should all be found in any intro to C book, or by some basic online searching.
I think what some people were trying to get to above is that if you want to programatically make your OWIN server "come to life", you'd be calling something like this:
using Microsoft.Owin.Hosting;
IDisposable _server = WebApp.Start<StartupMethod>("http://+:5000");
// Start Accepting HTTP via all interfaces on port 5000
Once you make this call, you will see the call to StartupMethod() fire in the debugger
Not so hard:
#include <thread>
void Test::runMultiThread()
{
std::thread t1(&Test::calculate, this, 0, 10);
std::thread t2(&Test::calculate, this, 11, 20);
t1.join();
t2.join();
}
If the result of the computation is still needed, use a future instead:
#include <future>
void Test::runMultiThread()
{
auto f1 = std::async(&Test::calculate, this, 0, 10);
auto f2 = std::async(&Test::calculate, this, 11, 20);
auto res1 = f1.get();
auto res2 = f2.get();
}
You can set environment variables in the notebook using os.environ
. Do the following before initializing TensorFlow to limit TensorFlow to first GPU.
import os
os.environ["CUDA_DEVICE_ORDER"]="PCI_BUS_ID" # see issue #152
os.environ["CUDA_VISIBLE_DEVICES"]="0"
You can double check that you have the correct devices visible to TF
from tensorflow.python.client import device_lib
print device_lib.list_local_devices()
I tend to use it from utility module like notebook_util
import notebook_util
notebook_util.pick_gpu_lowest_memory()
import tensorflow as tf
You can use ancestor
. I find that this is easier to read because the element you are actually selecting is at the end of the path.
//span[contains(text(),'someText')]/ancestor::div[contains(@class, 'measure-tab')]
Add servlet-api.jar into your classpath. It will be available into Tomcat's lib folder.
This will listen to the changed event. I have tried the answers from others but those did not work for me and finally, this one worked.
$('input:radio[name="postage"]').change(function(){
if($(this).is(":checked")){
alert("lksdahflk");
}
});
it's better to think in a practical context. In our team, we use rsync -aP
to replace a bad cassandra host in our cluster. We can't do this with scp (slow and no progress preservation).
I don't know is it bug or something but your labels and other UIs does not initialized automatically when you use custom cell. You should try this in your UICollectionViewController
class. It worked for me.
override func viewDidLoad() {
super.viewDidLoad()
let nib = UINib(nibName: "<WhateverYourNibName>", bundle: nil)
self.collectionView.registerNib(nib, forCellReuseIdentifier: "title")
}
In additon to directly accessing the array, there is also
array_push
— Push one or more elements onto the end of array
if you want to do screen capture from Java code in Android app AFAIK you must have Root provileges.
Here's the function I personally use - I simply derived it from the function I used for sha-1
hashing:
char *str2sha256( const char *str, int length ) {
int n;
SHA256_CTX c;
unsigned char digest[ SHA256_DIGEST_LENGTH ];
char *out = (char*) malloc( 33 );
SHA256_Init( &c );
while ( length > 0 ) {
if ( length > 512 ) SHA256_Update( &c, str, 512 );
else SHA256_Update( &c, str, length );
length -= 512;
str += 512;
}
SHA256_Final ( digest, &c );
for ( n = 0; n < SHA256_DIGEST_LENGTH; ++n )
snprintf( &( out[ n*2 ] ), 16*2, "%02x", (unsigned int) digest[ n ] );
return out;
}
Since version 4.14 of Linux kernel, vfs_read
and vfs_write
functions are no longer exported for use in modules. Instead, functions exclusively for kernel's file access are provided:
# Read the file from the kernel space.
ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos);
# Write the file from the kernel space.
ssize_t kernel_write(struct file *file, const void *buf, size_t count,
loff_t *pos);
Also, filp_open
no longer accepts user-space string, so it can be used for kernel access directly (without dance with set_fs
).
Use this if the session variable emp_num will store a string:
if (!string.IsNullOrEmpty(Session["emp_num"] as string))
{
//The code
}
If it doesn't store a string, but some other type, you should just check for null before accessing the value, as in your second example.
Actually, it's not possible with axios as of now. The status codes which falls in the range of 2xx
only, can be caught in .then()
.
A conventional approach is to catch errors in the catch()
block like below:
axios.get('/api/xyz/abcd')
.catch(function (error) {
if (error.response) {
// Request made and server responded
console.log(error.response.data);
console.log(error.response.status);
console.log(error.response.headers);
} else if (error.request) {
// The request was made but no response was received
console.log(error.request);
} else {
// Something happened in setting up the request that triggered an Error
console.log('Error', error.message);
}
});
Another approach can be intercepting requests or responses before they are handled by then or catch.
axios.interceptors.request.use(function (config) {
// Do something before request is sent
return config;
}, function (error) {
// Do something with request error
return Promise.reject(error);
});
// Add a response interceptor
axios.interceptors.response.use(function (response) {
// Do something with response data
return response;
}, function (error) {
// Do something with response error
return Promise.reject(error);
});
window.onload = () => {
// run in onload
setTimeout(() => {
// onload finished.
// and execute some code here like stat performance.
}, 10)
}
Matplot colors your plot with different colors , but incase you wanna put specific colors
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.plot(x, x)
plt.plot(x, 2 * x,color='blue')
plt.plot(x, 3 * x,color='red')
plt.plot(x, 4 * x,color='green')
plt.show()
If you are using Anaconda execute the following commands and your life will be saved!
conda update qt pyqt
conda update spyder
Try this:
<script>
window.onbeforeunload = function(e) {
return 'Dialog text here.';
};
</script>
more info here MDN.
Use PHP Document Object Model:
<?php
$str = '<h1>T1</h1>Lorem ipsum.<h1>T2</h1>The quick red fox...<h1>T3</h1>... jumps over the lazy brown FROG';
$DOM = new DOMDocument;
$DOM->loadHTML($str);
//get all H1
$items = $DOM->getElementsByTagName('h1');
//display all H1 text
for ($i = 0; $i < $items->length; $i++)
echo $items->item($i)->nodeValue . "<br/>";
?>
This outputs as:
T1
T2
T3
[EDIT]: After OP Clarification:
If you want the content like Lorem ipsum. etc, you can directly use this regex:
<?php
$str = '<h1>T1</h1>Lorem ipsum.<h1>T2</h1>The quick red fox...<h1>T3</h1>... jumps over the lazy brown FROG';
echo preg_replace("#<h1.*?>.*?</h1>#", "", $str);
?>
this outputs:
Lorem ipsum.The quick red fox...... jumps over the lazy brown FROG
It's additional information, and isn't an answer.
In C++11 you can write:
for (auto& it : s) {
cout << it << endl;
}
instead of
for (auto it = s.begin(); it != s.end(); it++) { cout << *it << endl; }
It has the same meaning.
Update: See the @Alnitak's comment also.
A little convenience script expanding on previous answers.
#!/bin/bash
# Uninstall node.js
#
# Options:
#
# -d Actually delete files, otherwise the script just _prints_ a command to delete.
# -p Installation prefix. Default /usr/local
# -f BOM file. Default /var/db/receipts/org.nodejs.pkg.bom
CMD="echo sudo rm -fr"
BOM_FILE="/var/db/receipts/org.nodejs.pkg.bom"
PREFIX="/usr/local"
while getopts "dp:f:" arg; do
case $arg in
d)
CMD="sudo rm -fr"
;;
p)
PREFIX=$arg
;;
f)
BOM_FILE=$arg
;;
esac
done
lsbom -f -l -s -pf ${BOM_FILE} \
| while read i; do
$CMD ${PREFIX}/${i}
done
$CMD ${PREFIX}/lib/node \
${PREFIX}/lib/node_modules \
${BOM_FILE}
Save it to file and run with:
# bash filename.sh
Comment tags are documented at https://docs.djangoproject.com/en/stable/ref/templates/builtins/#std:templatetag-comment
{% comment %} this is a comment {% endcomment %}
Single line comments are documented at https://docs.djangoproject.com/en/stable/topics/templates/#comments
{# this won't be rendered #}
Since Oracle 12C, you can fetch a specific number of rows with FETCH FIRST ROW ONLY
.
In your case this implies an ORDER BY
, so the performance should be considered.
SELECT A, col_date
FROM TABLENAME t_ext
ORDER BY col_date DESC NULLS LAST
FETCH FIRST 1 ROW ONLY;
The NULLS LAST
is just in case you may have null values in your field.
Pay attention on fact that Round
rounds.
So (I don't know if it matters in your industry or not), but:
float a = 12.345f;
Math.Round(a,2);
//result:12,35, and NOT 12.34 !
To make it more precise for your case we can do something like this:
int aInt = (int)(a*100);
float aFloat= aInt /100.0f;
//result:12,34
At the time of compilation as well as run time, add the switch --add-modules java.xml.bind
javac --add-modules java.xml.bind <java file name>
java --add-modules java.xml.bind <class file>
A good introduction of the JDK 9
modules can also be found at :
https://www.youtube.com/watch?v=KZfbRuvv5qc
I got the same error. In my case, I was using a mapped drive to edit code off of a second computer, that computer was running linux. Not sure exactly why gulp-watch relies on operating system compatibility prior to install (I would assume it has to do with security purposes). Essentially the error is checking against your operating system and the operating system calling the node module, in my case the two operating systems were not the same so it threw it error. Which from the looks of your error is the same as mine.
The Error
Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
How I fixed it?
I logged into the linux computer directly and ran
npm install --save-dev <module-name>
Then went back into my coding environment and everything was fine after that.
Hope that helps!
I have used this code and it responds correctly, only the output value is nullable.
var packesCount = await botContext.Sales.Where(s => s.CustomerId == cust.CustomerId && s.Validated)
.SumAsync(s => (int?)s.PackesCount);
if(packesCount != null)
{
// your code
}
else
{
// your code
}
You will definitely want to start with a good web scraping framework. Later on you may decide that they are too limiting and you can put together your own stack of libraries but without a lot of scraping experience your design will be much worse than pjscrape or scrapy.
Note: I use the terms crawling and scraping basically interchangeable here. This is a copy of my answer to your Quora question, it's pretty long.
Tools
Get very familiar with either Firebug or Chrome dev tools depending on your preferred browser. This will be absolutely necessary as you browse the site you are pulling data from and map out which urls contain the data you are looking for and what data formats make up the responses.
You will need a good working knowledge of HTTP as well as HTML and will probably want to find a decent piece of man in the middle proxy software. You will need to be able to inspect HTTP requests and responses and understand how the cookies and session information and query parameters are being passed around. Fiddler (http://www.telerik.com/fiddler) and Charles Proxy (http://www.charlesproxy.com/) are popular tools. I use mitmproxy (http://mitmproxy.org/) a lot as I'm more of a keyboard guy than a mouse guy.
Some kind of console/shell/REPL type environment where you can try out various pieces of code with instant feedback will be invaluable. Reverse engineering tasks like this are a lot of trial and error so you will want a workflow that makes this easy.
Language
PHP is basically out, it's not well suited for this task and the library/framework support is poor in this area. Python (Scrapy is a great starting point) and Clojure/Clojurescript (incredibly powerful and productive but a big learning curve) are great languages for this problem. Since you would rather not learn a new language and you already know Javascript I would definitely suggest sticking with JS. I have not used pjscrape but it looks quite good from a quick read of their docs. It's well suited and implements an excellent solution to the problem I describe below.
A note on Regular expressions: DO NOT USE REGULAR EXPRESSIONS TO PARSE HTML. A lot of beginners do this because they are already familiar with regexes. It's a huge mistake, use xpath or css selectors to navigate html and only use regular expressions to extract data from actual text inside an html node. This might already be obvious to you, it becomes obvious quickly if you try it but a lot of people waste a lot of time going down this road for some reason. Don't be scared of xpath or css selectors, they are WAY easier to learn than regexes and they were designed to solve this exact problem.
Javascript-heavy sites
In the old days you just had to make an http request and parse the HTML reponse. Now you will almost certainly have to deal with sites that are a mix of standard HTML HTTP request/responses and asynchronous HTTP calls made by the javascript portion of the target site. This is where your proxy software and the network tab of firebug/devtools comes in very handy. The responses to these might be html or they might be json, in rare cases they will be xml or something else.
There are two approaches to this problem:
The low level approach:
You can figure out what ajax urls the site javascript is calling and what those responses look like and make those same requests yourself. So you might pull the html from http://example.com/foobar and extract one piece of data and then have to pull the json response from http://example.com/api/baz?foo=b... to get the other piece of data. You'll need to be aware of passing the correct cookies or session parameters. It's very rare, but occasionally some required parameters for an ajax call will be the result of some crazy calculation done in the site's javascript, reverse engineering this can be annoying.
The embedded browser approach:
Why do you need to work out what data is in html and what data comes in from an ajax call? Managing all that session and cookie data? You don't have to when you browse a site, the browser and the site javascript do that. That's the whole point.
If you just load the page into a headless browser engine like phantomjs it will load the page, run the javascript and tell you when all the ajax calls have completed. You can inject your own javascript if necessary to trigger the appropriate clicks or whatever is necessary to trigger the site javascript to load the appropriate data.
You now have two options, get it to spit out the finished html and parse it or inject some javascript into the page that does your parsing and data formatting and spits the data out (probably in json format). You can freely mix these two options as well.
Which approach is best?
That depends, you will need to be familiar and comfortable with the low level approach for sure. The embedded browser approach works for anything, it will be much easier to implement and will make some of the trickiest problems in scraping disappear. It's also quite a complex piece of machinery that you will need to understand. It's not just HTTP requests and responses, it's requests, embedded browser rendering, site javascript, injected javascript, your own code and 2-way interaction with the embedded browser process.
The embedded browser is also much slower at scale because of the rendering overhead but that will almost certainly not matter unless you are scraping a lot of different domains. Your need to rate limit your requests will make the rendering time completely negligible in the case of a single domain.
Rate Limiting/Bot behaviour
You need to be very aware of this. You need to make requests to your target domains at a reasonable rate. You need to write a well behaved bot when crawling websites, and that means respecting robots.txt and not hammering the server with requests. Mistakes or negligence here is very unethical since this can be considered a denial of service attack. The acceptable rate varies depending on who you ask, 1req/s is the max that the Google crawler runs at but you are not Google and you probably aren't as welcome as Google. Keep it as slow as reasonable. I would suggest 2-5 seconds between each page request.
Identify your requests with a user agent string that identifies your bot and have a webpage for your bot explaining it's purpose. This url goes in the agent string.
You will be easy to block if the site wants to block you. A smart engineer on their end can easily identify bots and a few minutes of work on their end can cause weeks of work changing your scraping code on your end or just make it impossible. If the relationship is antagonistic then a smart engineer at the target site can completely stymie a genius engineer writing a crawler. Scraping code is inherently fragile and this is easily exploited. Something that would provoke this response is almost certainly unethical anyway, so write a well behaved bot and don't worry about this.
Testing
Not a unit/integration test person? Too bad. You will now have to become one. Sites change frequently and you will be changing your code frequently. This is a large part of the challenge.
There are a lot of moving parts involved in scraping a modern website, good test practices will help a lot. Many of the bugs you will encounter while writing this type of code will be the type that just return corrupted data silently. Without good tests to check for regressions you will find out that you've been saving useless corrupted data to your database for a while without noticing. This project will make you very familiar with data validation (find some good libraries to use) and testing. There are not many other problems that combine requiring comprehensive tests and being very difficult to test.
The second part of your tests involve caching and change detection. While writing your code you don't want to be hammering the server for the same page over and over again for no reason. While running your unit tests you want to know if your tests are failing because you broke your code or because the website has been redesigned. Run your unit tests against a cached copy of the urls involved. A caching proxy is very useful here but tricky to configure and use properly.
You also do want to know if the site has changed. If they redesigned the site and your crawler is broken your unit tests will still pass because they are running against a cached copy! You will need either another, smaller set of integration tests that are run infrequently against the live site or good logging and error detection in your crawling code that logs the exact issues, alerts you to the problem and stops crawling. Now you can update your cache, run your unit tests and see what you need to change.
Legal Issues
The law here can be slightly dangerous if you do stupid things. If the law gets involved you are dealing with people who regularly refer to wget and curl as "hacking tools". You don't want this.
The ethical reality of the situation is that there is no difference between using browser software to request a url and look at some data and using your own software to request a url and look at some data. Google is the largest scraping company in the world and they are loved for it. Identifying your bots name in the user agent and being open about the goals and intentions of your web crawler will help here as the law understands what Google is. If you are doing anything shady, like creating fake user accounts or accessing areas of the site that you shouldn't (either "blocked" by robots.txt or because of some kind of authorization exploit) then be aware that you are doing something unethical and the law's ignorance of technology will be extraordinarily dangerous here. It's a ridiculous situation but it's a real one.
It's literally possible to try and build a new search engine on the up and up as an upstanding citizen, make a mistake or have a bug in your software and be seen as a hacker. Not something you want considering the current political reality.
Who am I to write this giant wall of text anyway?
I've written a lot of web crawling related code in my life. I've been doing web related software development for more than a decade as a consultant, employee and startup founder. The early days were writing perl crawlers/scrapers and php websites. When we were embedding hidden iframes loading csv data into webpages to do ajax before Jesse James Garrett named it ajax, before XMLHTTPRequest was an idea. Before jQuery, before json. I'm in my mid-30's, that's apparently considered ancient for this business.
I've written large scale crawling/scraping systems twice, once for a large team at a media company (in Perl) and recently for a small team as the CTO of a search engine startup (in Python/Javascript). I currently work as a consultant, mostly coding in Clojure/Clojurescript (a wonderful expert language in general and has libraries that make crawler/scraper problems a delight)
I've written successful anti-crawling software systems as well. It's remarkably easy to write nigh-unscrapable sites if you want to or to identify and sabotage bots you don't like.
I like writing crawlers, scrapers and parsers more than any other type of software. It's challenging, fun and can be used to create amazing things.
In my case the php module was not loaded. Try this:
apache2ctl -M
. Look for module like php7_module (shared)
libapache2-mod-php7.3
. So I did: a2enmod php7.3
and the problem was solved.You could also use the linux sh
command and pass it a command that includes the redirection:
string cmd = "/bin/ls > " + filepath;
execl("/bin/sh", "sh", "-c", cmd.c_str(), 0);
Your code is in the default package, i.e. you have source all files in src/main/java with no custom package. I strongly suggest u to create package n then place your source file in it.
Ex-
src->
main->
java->
com.myfirst.example
Example.java
com.myfirst.example.controller
PersonController.java
com.myfirst.example.repository
PersonRepository.java
com.myfirst.example.model
Person.java
I hope it will resolve your problem.
In your particular example perhaps you do not have to perform any checks at all. Is that possible that New-Object
return null? I have never seen that. The command should fail in case of a problem and the rest of the code in the example will not be executed. So why should we do that checks at all?
Only in the code like below we need some checks (explicit comparison with $null is the best):
# we just try to get a new object
$ie = $null
try {
$ie = New-Object -ComObject InternetExplorer.Application
}
catch {
Write-Warning $_
}
# check and continuation
if ($ie -ne $null) {
...
}
In Angular 2 this is how we can set the default value for radio button:
HTML:
<label class="form-check-label">
<input type="radio" class="form-check-input" name="gender"
[(ngModel)]="gender" id="optionsRadios1" value="male">
Male
</label>
In the Component Class set the value of 'gender' variable equal to the value of radio button:
gender = 'male';
My complete solution:
1) Get Dark Reader on chrome which will not only get you a great Dark Theme for Jupyter but also for every single website you'd like (you can play with the different filters. I use Dynamic).
2) Paste those lines of code in your notebook so the legends and axes become visible:
from jupyterthemes import jtplot
jtplot.style(theme='monokai', context='notebook', ticks=True, grid=False)
You're all set for a disco coding night !
If you want to simply remove the value in the combo box:
me.combobox = ""
If you want to remove the recordset of the combobox, the easiest way is:
me.combobox.recordset = ""
me.combobox.requery
While it is common for new programmer to make this mistake of performing integer division when they actually meant to use floating point division, in actual practice integer division is a very common operation. If you are assuming that people rarely use it, and that every time you do division you'll always need to remember to cast to floating points, you are mistaken.
First off, integer division is quite a bit faster, so if you only need a whole number result, one would want to use the more efficient algorithm.
Secondly, there are a number of algorithms that use integer division, and if the result of division was always a floating point number you would be forced to round the result every time. One example off of the top of my head is changing the base of a number. Calculating each digit involves the integer division of a number along with the remainder, rather than the floating point division of the number.
Because of these (and other related) reasons, integer division results in an integer. If you want to get the floating point division of two integers you'll just need to remember to cast one to a double
/float
/decimal
.
For %d
part refer to this How does this program work? and for decimal places use %.2f
With argparse you could do:
parser.argparse.ArgumentParser()
#parser.add_args here
#sys.argv includes a list of elements starting with the program
if len(sys.argv) < 2:
parser.print_usage()
sys.exit(1)
Check Task Manager and make sure you don't have a devenv.exe process hanging. Kill the runaway process and try again.
The Easiest Way to do
public function update(Request $request, $id)
{
$coupon = Coupon::where('name','=',$request->name)->first();
if($coupon->id != $id){
$validatedData = $request->validate([
'discount' => 'required',
'name' => 'required|unique:coupons|max:255',
]);
}
$requestData = $request->all();
$coupon = Coupon::findOrFail($id);
$coupon->update($requestData);
return redirect('admin/coupons')->with('flash_message', 'Coupon updated!');
}
use
Date date = new Date();
String strDate = sdf.format(date);
intead Of
Calendar cal = Calendar.getInstance();
String strDate = sdf.format(cal.getTime());
Declare @MonthNumber int
SET @MonthNumber=DatePart(Month,GETDATE())
Select DateName( month , DateAdd( month , @MonthNumber , 0 ) - 1 )
Explaination:
MonthNumber
DatePart
which Return Month NumberIn Java adding a .0 will make it a double...
int total = (int) Math.ceil(157.0 / 32.0);
Can't you do this with just one heap? Update: no. See the comment.
Invariant: After reading 2*n
inputs, the min-heap holds the n
largest of them.
Loop: Read 2 inputs. Add them both to the heap, and remove the heap's min. This reestablishes the invariant.
So when 2n
inputs have been read, the heap's min is the nth largest. There'll need to be a little extra complication to average the two elements around the median position and to handle queries after an odd number of inputs.
In C language, objects with static storage duration have to be initialized with constant expressions, or with aggregate initializers containing constant expressions.
A "large" object is never a constant expression in C, even if the object is declared as const
.
Moreover, in C language, the term "constant" refers to literal constants (like 1
, 'a'
, 0xFF
and so on), enum members, and results of such operators as sizeof
. Const-qualified objects (of any type) are not constants in C language terminology. They cannot be used in initializers of objects with static storage duration, regardless of their type.
For example, this is NOT a constant
const int N = 5; /* `N` is not a constant in C */
The above N
would be a constant in C++, but it is not a constant in C. So, if you try doing
static int j = N; /* ERROR */
you will get the same error: an attempt to initialize a static object with a non-constant.
This is the reason why, in C language, we predominantly use #define
to declare named constants, and also resort to #define
to create named aggregate initializers.
This is how I would do it:
$terms = array('BMW', 'Audi', 'Porsche', 'Honda');
// -- purge 'make' Porsche from terms --
if (!empty($terms)) {
$pos = '';
$pos = array_search('Porsche', $terms);
if ($pos !== false) unset($terms[$pos]);
}
$ postgres -V # Or --version. Use "locate bin/postgres" if not found.
postgres (PostgreSQL) 9.6.1
$ postgres -V | awk '{print $NF}' # Last column is version.
9.6.1
$ postgres -V | egrep -o '[0-9]{1,}\.[0-9]{1,}' # Major.Minor version
9.6
If having more than one installation of PostgreSQL, or if getting the "postgres: command not found
" error:
$ locate bin/postgres | xargs -i xargs -t '{}' -V # xargs is intentionally twice.
/usr/pgsql-9.3/bin/postgres -V
postgres (PostgreSQL) 9.3.5
/usr/pgsql-9.6/bin/postgres -V
postgres (PostgreSQL) 9.6.1
If locate
doesn't help, try find
:
$ sudo find / -wholename '*/bin/postgres' 2>&- | xargs -i xargs -t '{}' -V # xargs is intentionally twice.
/usr/pgsql-9.6/bin/postgres -V
postgres (PostgreSQL) 9.6.1
Although postmaster
can also be used instead of postgres
, using postgres
is preferable because postmaster
is a deprecated alias of postgres
.
As relevant, login as postgres
.
$ psql -V # Or --version
psql (PostgreSQL) 9.6.1
If having more than one installation of PostgreSQL:
$ locate bin/psql | xargs -i xargs -t '{}' -V # xargs is intentionally twice.
/usr/bin/psql -V
psql (PostgreSQL) 9.3.5
/usr/pgsql-9.2/bin/psql -V
psql (PostgreSQL) 9.2.9
/usr/pgsql-9.3/bin/psql -V
psql (PostgreSQL) 9.3.5
=> SELECT version();
version
--------------------------------------------------------------------------------------------------------------
PostgreSQL 9.2.9 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4), 64-bit
=> SHOW server_version;
server_version
----------------
9.2.9
=> SHOW server_version_num;
server_version_num
--------------------
90209
If more curious, try => SHOW all;
.
For what it's worth, a shell command can be executed within psql
to show the client version of the psql
executable in the path. Note that the running psql
can potentially be different from the one in the path.
=> \! psql -V
psql (PostgreSQL) 9.2.9
I had this same issue and solved it by avoiding the BitmapFactory.decodeStream or decodeFile functions and instead used BitmapFactory.decodeFileDescriptor
decodeFileDescriptor
looks like it calls different native methods than the decodeStream/decodeFile.
Anyways, what worked was this (note that I added some options as some had above, but that's not what made the difference. What is critical is the call to BitmapFactory.decodeFileDescriptor instead of decodeStream or decodeFile):
private void showImage(String path) {
Log.i("showImage","loading:"+path);
BitmapFactory.Options bfOptions=new BitmapFactory.Options();
bfOptions.inDither=false; //Disable Dithering mode
bfOptions.inPurgeable=true; //Tell to gc that whether it needs free memory, the Bitmap can be cleared
bfOptions.inInputShareable=true; //Which kind of reference will be used to recover the Bitmap data after being clear, when it will be used in the future
bfOptions.inTempStorage=new byte[32 * 1024];
File file=new File(path);
FileInputStream fs=null;
try {
fs = new FileInputStream(file);
} catch (FileNotFoundException e) {
//TODO do something intelligent
e.printStackTrace();
}
try {
if(fs!=null) bm=BitmapFactory.decodeFileDescriptor(fs.getFD(), null, bfOptions);
} catch (IOException e) {
//TODO do something intelligent
e.printStackTrace();
} finally{
if(fs!=null) {
try {
fs.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//bm=BitmapFactory.decodeFile(path, bfOptions); This one causes error: java.lang.OutOfMemoryError: bitmap size exceeds VM budget
im.setImageBitmap(bm);
//bm.recycle();
bm=null;
}
I think there is a problem with the native function used in decodeStream/decodeFile. I have confirmed that a different native method is called when using decodeFileDescriptor. Also what I've read is "that Images (Bitmaps) are not allocated in a standard Java way but via native calls; the allocations are done outside of the virtual heap, but are counted against it!"
Here is an example to create a new object with renamed keys.
let x = { id: "checkout", name: "git checkout", description: "checkout repository" };
let renamed = Object.entries(x).reduce((u, [n, v]) => {
u[`__${n}`] = v;
return u;
}, {});
Hope it helps.
---Edited answer---
Regarding selection of the schema. MySQL Workbench (5.2.47 CE Rev1039) does not yet support exporting to the user defined schema. It will create only the schema for which you exported the .sql... In 5.2.47 we see "New" target schema. But it does not work. I use MySQL Administrator (the old pre-Oracle MySQL Admin beauty) for my work for backup/restore. You can still download it from Googled trustable sources (search MySQL Administrator 1.2.17).
TLDR; The formula is n(n-1)/2
where n
is the number of items in the set.
To find the number of unique pairs in a set, where the pairs are subject to the commutative property (AB = BA)
, you can calculate the summation of 1 + 2 + ... + (n-1)
where n
is the number of items in the set.
The reasoning is as follows, say you have 4 items:
A
B
C
D
The number of items that can be paired with A
is 3, or n-1
:
AB
AC
AD
It follows that the number of items that can be paired with B
is n-2
(because B
has already been paired with A
):
BC
BD
and so on...
(n-1) + (n-2) + ... + (n-(n-1))
which is the same as
1 + 2 + ... + (n-1)
or
n(n-1)/2
Try this test:
any(substring in string for substring in substring_list)
It will return True
if any of the substrings in substring_list
is contained in string
.
Note that there is a Python analogue of Marc Gravell's answer in the linked question:
from itertools import imap
any(imap(string.__contains__, substring_list))
In Python 3, you can use map
directly instead:
any(map(string.__contains__, substring_list))
Probably the above version using a generator expression is more clear though.
you can use DateAdd on a trigger or a computed column if the timestamp you are adding is fixed or dependent of another column
First off, the obvious answer that no one has provided, you need to install Babel into your application:
npm install babel --save
(or babel-core
if you instead want to require('babel-core/polyfill')
).
Aside from that, I have a grunt task to transpile my es6 and jsx as a build step (i.e. I don't want to use babel/register
, which is why I am trying to use babel/polyfill
directly in the first place), so I'd like to put more emphasis on this part of @ssube's answer:
Make sure you require it at the entry-point to your application, before anything else is called
I ran into some weird issue where I was trying to require babel/polyfill
from some shared environment startup file and I got the error the user referenced - I think it might have had something to do with how babel orders imports versus requires but I'm unable to reproduce now. Anyway, moving import 'babel/polyfill'
as the first line in both my client and server startup scripts fixed the problem.
Note that if you instead want to use require('babel/polyfill')
I would make sure all your other module loader statements are also requires and not use imports - avoid mixing the two. In other words, if you have any import statements in your startup script, make import babel/polyfill
the first line in your script rather than require('babel/polyfill')
.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConvertToAnyBase
{
class Program
{
static void Main(string[] args)
{
var baseNumber = int.Parse(Console.ReadLine());
var number = int.Parse(Console.ReadLine());
string conversion = "";
while(number!=0)
{
conversion += Convert.ToString(number % baseNumber);
number = number / baseNumber;
}
var conversion2 = conversion.ToArray().Reverse();
Console.WriteLine(string.Join("", conversion2));
}
}
}
Basically your query returns more than one result set. In API Docs uniqueResult() method says that Convenience method to return a single instance that matches the query, or null if the query returns no results
uniqueResult() method yield only single resultset
type
is actually a metaclass
-- a class that creates another classes.
Most metaclass
are the subclasses of type
. The metaclass
receives the new
class as its first argument and provide access to class object with details as mentioned below:
>>> class MetaClass(type):
... def __init__(cls, name, bases, attrs):
... print ('class name: %s' %name )
... print ('Defining class %s' %cls)
... print('Bases %s: ' %bases)
... print('Attributes')
... for (name, value) in attrs.items():
... print ('%s :%r' %(name, value))
...
>>> class NewClass(object, metaclass=MetaClass):
... get_choch='dairy'
...
class name: NewClass
Bases <class 'object'>:
Defining class <class 'NewClass'>
get_choch :'dairy'
__module__ :'builtins'
__qualname__ :'NewClass'
Note:
Notice that the class was not instantiated at any time; the simple act of creating the class triggered execution of the metaclass
.
Why does it implement its methods? How can it implement its methods when an interface can't contain method body? How can it implement the methods when it extends the other interface and not implement it? What is the purpose of an interface implementing another interface?
Interface does not implement the methods of another interface but just extends them.
One example where the interface extension is needed is: consider that you have a vehicle interface with two methods moveForward
and moveBack
but also you need to incorporate the Aircraft which is a vehicle but with some addition methods like moveUp
, moveDown
so
in the end you have:
public interface IVehicle {
bool moveForward(int x);
bool moveBack(int x);
};
and airplane:
public interface IAirplane extends IVehicle {
bool moveDown(int x);
bool moveUp(int x);
};
The File
class represents the "idea" of a file, not an actual handle to use for I/O. This is why the File
class has a .exists()
method, to tell you if the file exists or not. (How can you have a File
object that doesn't exist?)
By contrast, constructing a new FileInputStream(new File("/my/file"))
gives you an actual stream to read bytes from.
Update: After several attempts, it looks like this may have been fixed in latest Chrome builds (per Paul Irish's comment below). That would suggest we will see this fixed in stable Chrome June-July 2016. Let's see ...
This is a known bug with the official Chromecast JavaScript library. Instead of failing silently, it dumps these error messages in all non-Chrome browsers as well as Chrome browsers where the Chromecast extension isn't present.
The Chromecast team have indicated they won't fix this bug.
If you are a developer shipping with this library, you can't do anything about it according to Chromecast team. You can only inform users to ignore the errors. (I believe Chromecast team is not entirely correct as the library could, at the least, avoid requesting the extension scipt if the browser is not Chrome. And I suspect it could be possible to suppress the error even if it is Chrome, but haven't tried anything.)
If you are a user annoyed by these console messages, you can switch to Chrome if not using it already. Within Chrome, either:
Update [Nov 13, 2014]: The problem has now been acknowledged by Google. A member of the Chromecast team seems to suggest the issue will be bypassed by a change the team is currently working on.
Update 2 [Feb 17, 2015]: The team claim there's nothing they can do to remove the error logs as it's a standard Chrome network error and they are still working on a long-term fix. Public comments on the bug tracker were closed with that update.
Update 3 [Dec 4, 2015]: This has finally been fixed! In the end, Chrome team simply added some code to block out this specific error. Hopefully some combination of devtools and extensions API will be improved in the future to make it possible to fix this kind of problem without patching the browser. Chrome Canary already has the patch, so it should roll out to all users around mid-January. Additionally, the team has confirmed the issue no longer affects other browsers as the SDK was updated to only activate if it's in Chrome.
Update 4 (April 30): Nope, not yet anyway. Thankfully Google's developer relations team are more aware than certain other stakeholders how badly this has affected developer experience. More whitelist updates have recently been made to clobber these log messages. Current status at top of the post.
Run away from store procedures as much as possible. They are pretty hard to maintain and are VERY OLD STUFF ;)
setting color_scheme
only sets the code pallet,
setting theme
sets the whole ST3 theme to the one you specify:
{
"theme": "Nil.sublime-theme",
"color_scheme": "Packages/Theme - Nil/Big Duo.tmTheme"
...
}
Bootstrap has predefined classes that we use for styling. If you are familiar with CSS, you'd know what padding, margin and spacing etc. are.
mb-0 = margin-bottom:0;
OK now moving a little further in knowledge, bootstrap has more classes for margin including:
mt- = margin-top
mb- = margin-bottom
ml- = margin-left
mr- = margin-right
my- = it sets margin-left and margin-right at the same time on y axes
mX- = it sets margin-bottom and margin-top at the same time on X axes
This and much more is explained here https://getbootstrap.com/docs/5.0/utilities/spacing/ The best way to learn is through https://getbootstrap.com site itself. It explains a lot obout its built in classes.
If you are using T-SQL then it appears from previous posts that UNION removes duplicates. But if you are not, you could use distinct. This doesn't quite feel right to me either but it could get you the result you are looking for
SELECT DISTINCT *
FROM
(
select * from calls
left join users a on calls.assigned_to= a.user_id
where a.dept = 4
union
select * from calls
left join users r on calls.requestor_id= r.user_id
where r.dept = 4
)a
I add an example,
UNION, it is merging with distinct --> slower, because it need comparing (In Oracle SQL developer, choose query, press F10 to see cost analysis).
UNION ALL, it is merging without distinct --> faster.
SELECT to_date(sysdate, 'yyyy-mm-dd') FROM dual
UNION
SELECT to_date(sysdate, 'yyyy-mm-dd') FROM dual;
and
SELECT to_date(sysdate, 'yyyy-mm-dd') FROM dual
UNION ALL
SELECT to_date(sysdate, 'yyyy-mm-dd') FROM dual;
The suggested technique above in Dave's answer is certainly a good design practice, and yes ultimately the required permission must be set in the AndroidManifest.xml file to access the external storage.
However, the Mono-esque way to add most (if not all, not sure) "manifest options" is through the attributes of the class implementing the activity (or service).
The Visual Studio Mono plugin automatically generates the manifest, so its best not to manually tamper with it (I'm sure there are cases where there is no other option).
For example:
[Activity(Label="MonoDroid App", MainLauncher=true, Permission="android.permission.WRITE_EXTERNAL_STORAGE")]
public class MonoActivity : Activity
{
protected override void OnCreate(Bundle bindle)
{
base.OnCreate(bindle);
}
}
Here is my bare-bones version of this. Similar to the ones posted before, you would call like:
$('#myDiv').MessagePlugin({ yourSettings: 'here' })
.MessagePlugin('saySomething','Hello World!');
-or access the instance directly @ plugin_MessagePlugin
$elem = $('#myDiv').MessagePlugin();
var instance = $elem.data('plugin_MessagePlugin');
instance.saySomething('Hello World!');
MessagePlugin.js
;(function($){
function MessagePlugin(element,settings){ // The Plugin
this.$elem = element;
this._settings = settings;
this.settings = $.extend(this._default,settings);
}
MessagePlugin.prototype = { // The Plugin prototype
_default: {
message: 'Generic message'
},
initialize: function(){},
saySomething: function(message){
message = message || this._default.message;
return this.$elem.html(message);
}
};
$.fn.MessagePlugin = function(settings){ // The Plugin call
var instance = this.data('plugin_MessagePlugin'); // Get instance
if(instance===undefined){ // Do instantiate if undefined
settings = settings || {};
this.data('plugin_MessagePlugin',new MessagePlugin(this,settings));
return this;
}
if($.isFunction(MessagePlugin.prototype[settings])){ // Call method if argument is name of method
var args = Array.prototype.slice.call(arguments); // Get the arguments as Array
args.shift(); // Remove first argument (name of method)
return MessagePlugin.prototype[settings].apply(instance, args); // Call the method
}
// Do error handling
return this;
}
})(jQuery);
you will need to use a PHP script (or an other server side language for this)
<?php
// We'll be outputting a PDF
header('Content-type: application/pdf');
// It will be called downloaded.pdf
header('Content-Disposition: attachment; filename="downloaded.pdf"');
// The PDF source is in original.pdf
readfile('original.pdf');
?>
and use httacces to redirect (rewrite) to the PHP file instead of the pdf
Get-ChildItem -Recurse *.txt | Format-Table FullName
That is what I used. I feel it is more understandable as it doesn't contain any loop syntax.
I think this will bring it back using 3.0
.navbar .divider-vertical {
height: 50px;
margin: 0 9px;
border-right: 1px solid #ffffff;
border-left: 1px solid #f2f2f2;
}
.navbar-inverse .divider-vertical {
border-right-color: #222222;
border-left-color: #111111;
}
@media (max-width: 767px) {
.navbar-collapse .nav > .divider-vertical {
display: none;
}
}
This can be done in [N + log(N) - 2] time, which is slightly better than the loose upper bound of 2N (which can be thought of O(N) too).
The trick is to use binary recursive calls and "tennis tournament" algorithm. The winner (the largest number) will emerge after all the 'matches' (takes N-1 time), but if we record the 'players' of all the matches, and among them, group all the players that the winner has beaten, the second largest number will be the largest number in this group, i.e. the 'losers' group.
The size of this 'losers' group is log(N), and again, we can revoke the binary recursive calls to find the largest among the losers, which will take [log(N) - 1] time. Actually, we can just linearly scan the losers group to get the answer too, the time budget is the same.
Below is a sample python code:
def largest(L):
global paris
if len(L) == 1:
return L[0]
else:
left = largest(L[:len(L)//2])
right = largest(L[len(L)//2:])
pairs.append((left, right))
return max(left, right)
def second_largest(L):
global pairs
biggest = largest(L)
second_L = [min(item) for item in pairs if biggest in item]
return biggest, largest(second_L)
if __name__ == "__main__":
pairs = []
# test array
L = [2,-2,10,5,4,3,1,2,90,-98,53,45,23,56,432]
if len(L) == 0:
first, second = None, None
elif len(L) == 1:
first, second = L[0], None
else:
first, second = second_largest(L)
print('The largest number is: ' + str(first))
print('The 2nd largest number is: ' + str(second))
You should use git pull --rebase
when
Indeed -- why not then? It's more clear, and doesn't impose a logical grouping on your commits.
Ok, I suppose it needs some clarification. In Git, as you probably know, you're encouraged to branch and merge. Your local branch, into which you pull changes, and remote branch are, actually, different branches, and git pull
is about merging them. It's reasonable, since you push not very often and usually accumulate a number of changes before they constitute a completed feature.
However, sometimes--by whatever reason--you think that it would actually be better if these two--remote and local--were one branch. Like in SVN. It is here where git pull --rebase
comes into play. You no longer merge--you actually commit on top of the remote branch. That's what it actually is about.
Whether it's dangerous or not is the question of whether you are treating local and remote branch as one inseparable thing. Sometimes it's reasonable (when your changes are small, or if you're at the beginning of a robust development, when important changes are brought in by small commits). Sometimes it's not (when you'd normally create another branch, but you were too lazy to do that). But that's a different question.
Not sure if it's what you mean, but you can do this:
plot(1:10, xaxt = "n", xlab='Some Letters')
axis(1, at=1:10, labels=letters[1:10])
which then gives you the graph:
I don't think one is inherently better than another one, but I would suggest sticking with || because it is the default in most languages.
EDIT: As others have pointed out there is indeed a difference between the two.
\\loop throgh all rows of the grid view
if (GridView1.Rows[i - 1].Cells[4].Text.ToString() == "value1")
{
GridView1.Rows[i - 1].ForeColor = Color.Black;
}
else if (GridView1.Rows[i - 1].Cells[4].Text.ToString() == "value2")
{
GridView1.Rows[i - 1].ForeColor = Color.Blue;
}
else if (GridView1.Rows[i - 1].Cells[4].Text.ToString() == "value3")
{
GridView1.Rows[i - 1].ForeColor = Color.Red;
}
else if (GridView1.Rows[i - 1].Cells[4].Text.ToString() == "value4")
{
GridView1.Rows[i - 1].ForeColor = Color.Green;
}
I found that by shutting down a Console and a running Simulator allowed XCode to see my iPhone again. I'd make sure other related programs aren't running if you don't need them.