Big task, chances are you shouldn't reinvent the wheel rather using an existing wheel (such as paypal).
However, if you insist on continuing. Start small, you can use a credit card processing facility (Moneris, Authorize.NET) to process credit cards. Most providers have an API you can use. Be wary that you may need to use different providers depending on the card type (Discover, Visa, Amex, Mastercard) and Country (USA, Canada, UK). So build it so that you can communicate with multiple credit card processing APIs.
Security is essential if you are storing credit cards and payment details. Ensure that you are encrypting things properly.
Again, don't reinvent the wheel. You are better off using an existing provider and focussing your development attention on solving an problem that can't easily be purchase.
assume w contains week numbers ([1:7])
n = histc(M,w)
if you do not know the range of numbers in M:
n = histc(M,unique(M))
It is such as a SQL Group by command!
this is error in some answers for replace |
var mystring = "this|is|a|test";
mystring = mystring.replace(/|/g, "");
alert(mystring);
this correction is correct but the | In the end it should look like this \|
var mystring = "this|is|a|test";
mystring = mystring.replace(/\|/g, "");
alert(mystring);
If you specifically need to change the primary key value to a different number (ex 123 -> 1123). The identity property blocks changing a PK value. Set Identity_insert isn't going to work. Doing an Insert/Delete is not advisable if you have cascading deletes (unless you turn off referential integrity checking).
EDIT: Newer versions of SQL don't allow changing the syscolumns entity, so part of my solution has to be done the hard way. Refer to this SO on how to remove Identity from a primary key instead: Remove Identity from a column in a table This script will turn off identity on a PK:
***********************
sp_configure 'allow update', 1
go
reconfigure with override
go
update syscolumns set colstat = 0 --turn off bit 1 which indicates identity column
where id = object_id('table_name') and name = 'column_name'
go
exec sp_configure 'allow update', 0
go
reconfigure with override
go
***********************
Next, you can set the relationships so they'll update the foreign key references. Or else you need to turn off relationship enforcement. This SO link shows how: How can foreign key constraints be temporarily disabled using T-SQL?
Now, you can do your updates. I wrote a short script to write all my update SQL based on the same column name (in my case, I needed to increase the CaseID by 1,000,000:
select
'update ['+c.table_name+'] SET ['+Column_Name+']=['+Column_Name+']+1000000'
from Information_Schema.Columns as c
JOIN Information_Schema.Tables as t ON t.table_Name=c.table_name and t.Table_Schema=c.table_schema and t.table_type='BASE TABLE'
where Column_Name like 'CaseID' order by Ordinal_position
Lastly, re-enable referential integrity and then re-enable the Identity column on the primary key.
Note: I see some folks on these questions ask WHY. In my case, I have to merge data from a second production instance into a master DB so I can shut down the second instance. I just need all the PK/FKs of operations data to not collide. Meta-data FKs are identical.
Npm and Bower are both dependency management tools. But the main difference between both is npm is used for installing Node js modules but bower js is used for managing front end components like html, css, js etc.
A fact that makes this more confusing is that npm provides some packages which can be used in front-end development as well, like grunt
and jshint
.
These lines add more meaning
Bower, unlike npm, can have multiple files (e.g. .js, .css, .html, .png, .ttf) which are considered the main file(s). Bower semantically considers these main files, when packaged together, a component.
Edit: Grunt is quite different from Npm and Bower. Grunt is a javascript task runner tool. You can do a lot of things using grunt which you had to do manually otherwise. Highlighting some of the uses of Grunt:
There are grunt plugins for sass compilation, uglifying your javascript, copy files/folders, minifying javascript etc.
Please Note that grunt plugin is also an npm package.
Question-1
When I want to add a package (and check in the dependency into git), where does it belong - into package.json or into bower.json
It really depends where does this package belong to. If it is a node module(like grunt,request) then it will go in package.json otherwise into bower json.
Question-2
When should I ever install packages explicitly like that without adding them to the file that manages dependencies
It does not matter whether you are installing packages explicitly or mentioning the dependency in .json file. Suppose you are in the middle of working on a node project and you need another project, say request
, then you have two options:
OR
npm install --save request
--save
options adds the dependency to package.json file as well. If you don't specify --save
option, it will only download the package but the json file will be unaffected.
You can do this either way, there will not be a substantial difference.
But as your system grows in size and functionality... i think that returning always a json is not a bad idea at all. Is more a architectural / "big scale design" matter.
You can think about returing always a JSON with two know fields : code and data. Where code is a numeric code specifying the success of the operation to be done and data is any aditional data related with the operation / service requested.
Come on, when we use a backend a service provider, any service can be checked to see if it worked well.
So i stick, to not let spring manage this, exposing hybrid returning operations (Some returns data other nothing...).. instaed make sure that your server expose a more homogeneous interface. Is more simple at the end of the day.
Here is what made the error disappear for me:
Close eclipse, open up a terminal window and run:
$ mvn clean eclipse:clean eclipse:eclipse
Are you using Maven? If so,
To add it: Right-click on the project, Maven → Disable Maven Nature Right-click on the project, Configure → Convert to Maven Project.
And then clean
Edit 1:
If that doesn't resolve the issue try right-clicking on your project and select properties. Select Java Build Path → Library tab. Look for a JVM. If it's not there, click to add Library and add the default JVM. If VM is there, click edit and select the default JVM. Hopefully, that works.
Edit 2:
You can also try going into the folder where you have all your projects and delete the .metadata
for eclipse (be aware that you'll have to re-import all the projects afterwards! Also all the environment settings you've set would also have to be redone). After it was deleted just import the project again, and hopefully, it works.
git fetch
will grab the latest list of branches.
Now you can git checkout MyNewBranch
Done :)
For more info see docs: git fetch
The importance of locales is that your environment/os can provide formatting functionality for all installed locales even if you don't know about them when you write your application. My Windows 7 system has 211 locales installed (listed below), so you wouldn't likely write any custom code or translation specific to this many locales.
The most important thing for various versions of English is in formatting numbers and dates. Other differences are significant to the extent that you want and able to cater to specific variations.
af-ZA
am-ET
ar-AE
ar-BH
ar-DZ
ar-EG
ar-IQ
ar-JO
ar-KW
ar-LB
ar-LY
ar-MA
arn-CL
ar-OM
ar-QA
ar-SA
ar-SY
ar-TN
ar-YE
as-IN
az-Cyrl-AZ
az-Latn-AZ
ba-RU
be-BY
bg-BG
bn-BD
bn-IN
bo-CN
br-FR
bs-Cyrl-BA
bs-Latn-BA
ca-ES
co-FR
cs-CZ
cy-GB
da-DK
de-AT
de-CH
de-DE
de-LI
de-LU
dsb-DE
dv-MV
el-GR
en-029
en-AU
en-BZ
en-CA
en-GB
en-IE
en-IN
en-JM
en-MY
en-NZ
en-PH
en-SG
en-TT
en-US
en-ZA
en-ZW
es-AR
es-BO
es-CL
es-CO
es-CR
es-DO
es-EC
es-ES
es-GT
es-HN
es-MX
es-NI
es-PA
es-PE
es-PR
es-PY
es-SV
es-US
es-UY
es-VE
et-EE
eu-ES
fa-IR
fi-FI
fil-PH
fo-FO
fr-BE
fr-CA
fr-CH
fr-FR
fr-LU
fr-MC
fy-NL
ga-IE
gd-GB
gl-ES
gsw-FR
gu-IN
ha-Latn-NG
he-IL
hi-IN
hr-BA
hr-HR
hsb-DE
hu-HU
hy-AM
id-ID
ig-NG
ii-CN
is-IS
it-CH
it-IT
iu-Cans-CA
iu-Latn-CA
ja-JP
ka-GE
kk-KZ
kl-GL
km-KH
kn-IN
kok-IN
ko-KR
ky-KG
lb-LU
lo-LA
lt-LT
lv-LV
mi-NZ
mk-MK
ml-IN
mn-MN
mn-Mong-CN
moh-CA
mr-IN
ms-BN
ms-MY
mt-MT
nb-NO
ne-NP
nl-BE
nl-NL
nn-NO
nso-ZA
oc-FR
or-IN
pa-IN
pl-PL
prs-AF
ps-AF
pt-BR
pt-PT
qut-GT
quz-BO
quz-EC
quz-PE
rm-CH
ro-RO
ru-RU
rw-RW
sah-RU
sa-IN
se-FI
se-NO
se-SE
si-LK
sk-SK
sl-SI
sma-NO
sma-SE
smj-NO
smj-SE
smn-FI
sms-FI
sq-AL
sr-Cyrl-BA
sr-Cyrl-CS
sr-Cyrl-ME
sr-Cyrl-RS
sr-Latn-BA
sr-Latn-CS
sr-Latn-ME
sr-Latn-RS
sv-FI
sv-SE
sw-KE
syr-SY
ta-IN
te-IN
tg-Cyrl-TJ
th-TH
tk-TM
tn-ZA
tr-TR
tt-RU
tzm-Latn-DZ
ug-CN
uk-UA
ur-PK
uz-Cyrl-UZ
uz-Latn-UZ
vi-VN
wo-SN
xh-ZA
yo-NG
zh-CN
zh-HK
zh-MO
zh-SG
zh-TW
zu-ZA
You can't put a border on a tr element. This worked for me in firefox and IE 11:
<td style='border-bottom:1pt solid black'>
you can use the keyword 'In' and pass the List argument. e.g : findByInventoryIdIn
List<AttributeHistory> findByValueIn(List<String> values);
Try using:
npm audit fix --force
and then:
npm install --save @ng-bootstrap/ng-bootstrap
instead of saving @ng-bootstrap/ng-bootstrap
globally.
Try a different protocol. git:// may have problems from your firewall, for example; try a git clone with https: instead.
You can try this:
for file in *.jpg;
do
mv $file $somestring_${file:((-7))}
done
You can see "parameter expansion" in man bash
to understand the above better.
I think I got it. I have to use org.w3c.dom.Element
explicitly. I had a different Element field too.
I had a similar issue reading the serial output from a digital scale. I was reading [3:12] out of a 18 characters long output string.
In my case sometimes there is a null character "\x00" (NUL) which magically appears in the scale's reply string and is not printed.
I was getting the error:
> ' 0.00'
> 3 0 fast loop, delta = 10.0 weight = 0.0
> ' 0.00'
> 1 800 fast loop, delta = 10.0 weight = 0.0
> ' 0.00'
> 6 0 fast loop, delta = 10.0 weight = 0.0
> ' 0\x00.0'
> Traceback (most recent call last):
> File "measure_weight_speed.py", line 172, in start
> valueScale = float(answer_string)
> ValueError: invalid literal for float(): 0
After some research I wrote few lines of code that work in my case.
replyScale = scale_port.read(18)
answer = replyScale[3:12]
answer_decode = answer.replace("\x00", "")
answer_strip = str(answer_decode.strip())
print(repr(answer_strip))
valueScale = float(answer_strip)
The answers in these posts helped:
An alternative to substr
is the following, as a function:
substr_replace($string, "", -1)
Is it the fastest? I don't know, but I'm willing to bet these alternatives are all so fast that it just doesn't matter.
usually in maven we have two types of builds 1)Snapshot builds 2)Release builds
snapshot builds:SNAPSHOT is the special version that indicate current deployment copy not like a regular version, maven checks the version for every build in the remote repository so the snapshot builds are nothing but development builds.
Release builds:Release means removing the SNAPSHOT at the version for the build, these are the regular build versions.
I had the same problem, just couldn't figure it out with opencv2 and opencv3 installed into /opt/opencv and opencv3 respectively. Turned out that bloody anaconda install of opencv in my home directory was first on path and mangled opencv. Removed it and started using /opt/opencv3/lib as defined in /etc/ld.so.conf.d/opencv.conf. Worked perfectly first go. Do you have anaconda installed? Could be the issue.
You might also consider removing the need for duplicated parameter names in your Sql by changing your Sql to
table.Variable2 LIKE '%' || :VarB || '%'
and then getting your client to provide '%' for any value of VarB instead of null. In some ways I think this is more natural.
You could also change the Sql to
table.Variable2 LIKE '%' || IfNull(:VarB, '%') || '%'
To get the negation, do this ...
df.filter(not( ..expression.. ))
eg
df.filter(not($"state" === "TX"))
Catch the exception that happens to be a parent class in the exception hierarchy. This is of course, bad practice. In your case, the common parent exception happens to be the Exception class, and catching any exception that is an instance of Exception, is indeed bad practice - exceptions like NullPointerException are usually programming errors and should usually be resolved by checking for null values.
Use the Make shell
builtin like in MY_VAR=$(shell echo whatever)
me@Zack:~$make
MY_VAR IS whatever
me@Zack:~$ cat Makefile
MY_VAR := $(shell echo whatever)
all:
@echo MY_VAR IS $(MY_VAR)
You need to create an event handler for the user control that is raised when an event from within the user control is fired. This will allow you to bubble the event up the chain so you can handle the event from the form.
When clicking Button1
on the UserControl, i'll fire Button1_Click
which triggers UserControl_ButtonClick
on the form:
User control:
[Browsable(true)] [Category("Action")]
[Description("Invoked when user clicks button")]
public event EventHandler ButtonClick;
protected void Button1_Click(object sender, EventArgs e)
{
//bubble the event up to the parent
if (this.ButtonClick!= null)
this.ButtonClick(this, e);
}
Form:
UserControl1.ButtonClick += new EventHandler(UserControl_ButtonClick);
protected void UserControl_ButtonClick(object sender, EventArgs e)
{
//handle the event
}
Notes:
Newer Visual Studio versions suggest that instead of if (this.ButtonClick!= null) this.ButtonClick(this, e);
you can use ButtonClick?.Invoke(this, e);
, which does essentially the same, but is shorter.
The Browsable
attribute makes the event visible in Visual Studio's designer (events view), Category
shows it in the "Action" category, and Description
provides a description for it. You can omit these attributes completely, but making it available to the designer it is much more comfortable, since VS handles it for you.
Do you just mean spaces or all whitespace?
For just spaces, use str_replace:
$string = str_replace(' ', '', $string);
For all whitespace (including tabs and line ends), use preg_replace:
$string = preg_replace('/\s+/', '', $string);
(From here).
1) Open psql terminal.
2) Unzip/ untar the dump file.
3) Create an empty database.
4) use the following command to restore the .dump file
<database_name>-# \i <path_to_.dump_file>
If the goal simply is to list all computer objects with an empty description attribute try this
import-module activedirectory
$domain = "domain.example.com"
Get-ADComputer -Filter '*' -Properties Description | where { $_.Description -eq $null }
If you are looking for tools like the the mysql and mysqldump command line client for Windows for versions around mysql Ver 14.14 Distrib 5.6.13, for Win32 (x86) it seems to be in HOMEDRIVE:\Program Files (x86)\MySQL\MySQL Workbench version
This directory is also not placed in the path by default so you will need to add it to your PATH environment variable before you can easily run it from the command prompt.
Also, there is a mysql utilities console but it does not work for my needs. Below is a list of the capabilities on the mysql utilities console in case it works for you:
Utility Description ---------------- --------------------------------------------------------- mysqlauditadmin audit log maintenance utility mysqlauditgrep audit log search utility mysqldbcompare compare databases for consistency mysqldbcopy copy databases from one server to another mysqldbexport export metadata and data from databases mysqldbimport import metadata and data from files mysqldiff compare object definitions among objects where the difference is how db1.obj1 differs from db2.obj2 mysqldiskusage show disk usage for databases mysqlfailover automatic replication health monitoring and failover mysqlfrm show CREATE TABLE from .frm files mysqlindexcheck check for duplicate or redundant indexes mysqlmetagrep search metadata mysqlprocgrep search process information mysqlreplicate establish replication with a master mysqlrpladmin administration utility for MySQL replication mysqlrplcheck check replication mysqlrplshow show slaves attached to a master mysqlserverclone start another instance of a running server mysqlserverinfo show server information mysqluserclone clone a MySQL user account to one or more new users
I believe the browser is looking for those assets FROM the root of the webserver. This is difficult because it is easy to start developing on your machine WITHOUT actually using a webserver ( just by loading local files through your browser)
You could start by packaging your html and css/js together?
a directory structure something like:
-yourapp
- index.html
- assets
- css
- js
- myPage.js
Then your script tag (from index.html) could look like
<script src="assets/js/myPage.js"></script>
An added benifit of packaging your html and assets in one directory is that you can copy the directory and give it to someone else or put it on another machine and it will work great.
Try this : MyTextBox.Focus ( );
If you want to get the date like 12-3-2016, separate each day, month, and year value, then copy-paste this code:
$day = date("d");
$month = date("m");
$year = date("y");
print "date" . $day . "-" . $month . "-" . $year;
Not really, in the standard. Some implementations have a nonstandard itoa() function, and you could look up Boost's lexical_cast, but if you stick to the standard it's pretty much a choice between stringstream and sprintf() (snprintf() if you've got it).
Before I show you how to reload / refresh model data from the server programmatically? I have to explain for you the concept of Data Binding. This is an extremely powerful concept that will truly revolutionize the way you develop. So may be you have to read about this concept from this link or this seconde link in order to unterstand how AngularjS work.
now I'll show you a sample example that exaplain how can you update your model from server.
HTML Code:
<div ng-controller="PersonListCtrl">
<ul>
<li ng-repeat="person in persons">
Name: {{person.name}}, Age {{person.age}}
</li>
</ul>
<button ng-click="updateData()">Refresh Data</button>
</div>
So our controller named: PersonListCtrl and our Model named: persons. go to your Controller js in order to develop the function named: updateData()
that will be invoked when we are need to update and refresh our Model persons.
Javascript Code:
app.controller('adsController', function($log,$scope,...){
.....
$scope.updateData = function(){
$http.get('/persons').success(function(data) {
$scope.persons = data;// Update Model-- Line X
});
}
});
Now I explain for you how it work:
when user click on button Refresh Data, the server will call to function updateData() and inside this function we will invoke our web service by the function $http.get()
and when we have the result from our ws we will affect it to our model (Line X).Dice that affects the results for our model, our View of this list will be changed with new Data.
I think you can simply do:
class OuterClass:
outer_var = 1
class InnerClass:
pass
InnerClass.inner_var = outer_var
The problem you encountered is due to this:
A block is a piece of Python program text that is executed as a unit. The following are blocks: a module, a function body, and a class definition.
(...)
A scope defines the visibility of a name within a block.
(...)
The scope of names defined in a class block is limited to the class block; it does not extend to the code blocks of methods – this includes generator expressions since they are implemented using a function scope. This means that the following will fail:class A: a = 42 b = list(a + i for i in range(10))
http://docs.python.org/reference/executionmodel.html#naming-and-binding
The above means:
a function body is a code block and a method is a function, then names defined out of the function body present in a class definition do not extend to the function body.
Paraphrasing this for your case:
a class definition is a code block, then names defined out of the inner class definition present in an outer class definition do not extend to the inner class definition.
I need the exact same feature described in this question. Here is my solution and source code: https://github.com/laoyang/android-dynamic-views. And you can see the video demo in action here: http://www.youtube.com/watch?v=4HeqyG6FDhQ
Basically you'll two xml layout files:
TextEdit
, a Spinner
and an ImageButton
for deletion. In the Java code, you'll add and remove row views into the container dynamically, using inflate, addView, removeView, etc. There are some visibility control for better UX in the stock Android app. You need add a TextWatcher for the EditText view in each row: when the text is empty you need to hide the Add new button and the delete button. In my code, I wrote a void inflateEditRow(String)
helper function for all the logic.
android:animateLayoutChanges="true"
in xml to enable animationThe Java code of the main activity ( This explains all the logic, but quite a few properties are set in xml layout files, please refer to the Github source for complete solution):
public class MainActivity extends Activity {
// Parent view for all rows and the add button.
private LinearLayout mContainerView;
// The "Add new" button
private Button mAddButton;
// There always should be only one empty row, other empty rows will
// be removed.
private View mExclusiveEmptyView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.row_container);
mContainerView = (LinearLayout) findViewById(R.id.parentView);
mAddButton = (Button) findViewById(R.id.btnAddNewItem);
// Add some examples
inflateEditRow("Xiaochao");
inflateEditRow("Yang");
}
// onClick handler for the "Add new" button;
public void onAddNewClicked(View v) {
// Inflate a new row and hide the button self.
inflateEditRow(null);
v.setVisibility(View.GONE);
}
// onClick handler for the "X" button of each row
public void onDeleteClicked(View v) {
// remove the row by calling the getParent on button
mContainerView.removeView((View) v.getParent());
}
// Helper for inflating a row
private void inflateEditRow(String name) {
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView = inflater.inflate(R.layout.row, null);
final ImageButton deleteButton = (ImageButton) rowView
.findViewById(R.id.buttonDelete);
final EditText editText = (EditText) rowView
.findViewById(R.id.editText);
if (name != null && !name.isEmpty()) {
editText.setText(name);
} else {
mExclusiveEmptyView = rowView;
deleteButton.setVisibility(View.INVISIBLE);
}
// A TextWatcher to control the visibility of the "Add new" button and
// handle the exclusive empty view.
editText.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
// Some visibility logic control here:
if (s.toString().isEmpty()) {
mAddButton.setVisibility(View.GONE);
deleteButton.setVisibility(View.INVISIBLE);
if (mExclusiveEmptyView != null
&& mExclusiveEmptyView != rowView) {
mContainerView.removeView(mExclusiveEmptyView);
}
mExclusiveEmptyView = rowView;
} else {
if (mExclusiveEmptyView == rowView) {
mExclusiveEmptyView = null;
}
mAddButton.setVisibility(View.VISIBLE);
deleteButton.setVisibility(View.VISIBLE);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
}
});
// Inflate at the end of all rows but before the "Add new" button
mContainerView.addView(rowView, mContainerView.getChildCount() - 1);
}
Have you looked at python-graph? I haven't used it myself, but the project page looks promising.
Scandit is a startup whose goal is to replace bulky, expensive laser barcode scanners with cheap mobile phones.
There are SDKs for Android, iOS, Windows, C API/Linux, React Native, Cordova/PhoneGap, Xamarin.
There is also Scandit Barcode Scanner SDK for the Web which the WebAssembly version of the SDK. It runs in modern browsers, also on phones.
There's a client library that also provides a barcode picker component. It can be used like this:
<div id="barcode-picker" style="max-width: 1280px; max-height: 80%;"></div>
<script src="https://unpkg.com/scandit-sdk"></script>
<script>
console.log('Loading...');
ScanditSDK.configure("xxx", {
engineLocation: "https://unpkg.com/scandit-sdk/build/"
}).then(() => {
console.log('Loaded');
ScanditSDK.BarcodePicker.create(document.getElementById('barcode-picker'), {
playSoundOnScan: true,
vibrateOnScan: true
}).then(function(barcodePicker) {
console.log("Ready");
barcodePicker.applyScanSettings(new ScanditSDK.ScanSettings({
enabledSymbologies: ["ean8", "ean13", "upca", "upce", "code128", "code39", "code93", "itf", "qr"],
codeDuplicateFilter: 1000
}));
barcodePicker.onScan(function(barcodes) {
console.log(barcodes);
});
});
});
</script>
Disclaimer: I work for Scandit
protected void btnsubmit_Click(object sender, EventArgs e)
{
string s = @"SELECT * FROM tbl1 WHERE CodNo = @CodNo";
SqlCommand cmd1 = new SqlCommand(s, con);
cmd1.Parameters.AddWithValue("@CodNo", txtid.Text);
con.Open();
int records = (int)cmd1.ExecuteScalar();
if (records > 0)
{
Response.Write("<script>alert('Record not Exist')</script>");
}
else
{
Response.Write("<script>alert('Record Exist')</script>");
}
}
private void insert_data()
{
SqlCommand comm = new SqlCommand("Insert into tbl1(CodNo,name,lname,fname,gname,EmailID,PhonNo,gender,image,province,district,village,address,phonNo2,DateOfBirth,school,YearOfGraduation,exlanguage,province2,district2,village2,PlaceOfBirth,NIDnumber,IDchapter,IDpage,IDRecordNumber,NIDCard,Kankur1Year,Kankur1ID,Kankur1Mark,Kankur2Year,Kankur2ID,Kankur2Mark,Kankur3Year,Kankur3ID,Kankur3Mark) values(@CodNo,N'" + txtname.Text.ToString() + "',N'" + txtlname.Text.ToString() + "',N'" + txtfname.Text.ToString() + "',N'" + txtgname.Text.ToString() + "',N'" + txtemail.Text.ToString() + "','" + txtphonnumber.Text.ToString() + "',N'" + ddlgender.Text.ToString() + "',@image,N'" + txtprovince.Text.ToString() + "',N'" + txtdistrict.Text.ToString() + "',N'" + txtvillage.Text.ToString() + "',N'" + txtaddress.Value.ToString() + "','" + txtphonNo2.Text.ToString() + "',N'" + txtdbo.Text.ToString() + "',N'" + txtschool.Text.ToString() + "','" + txtgraduate.Text.ToString() + "',N'" + txtexlanguage.Text.ToString() + "',N'" + txtprovince1.Text.ToString() + "',N'" + txtdistrict1.Text.ToString() + "',N'" + txtvillage1.Text.ToString() + "',N'" + txtpbirth.Text.ToString() + "','" + txtNIDnumber.Text.ToString() + "','" + txtidchapter.Text.ToString() + "', '" + txtidpage.Text.ToString() + "','" + txtrecordNo.Text.ToString() + "',@NIDCard,'" + txtkankuryear1.Text.ToString() + "','" + txtkankurid1.Text.ToString() + "','" + txtkankurscore1.Text.ToString() + "','" + txtkankuryear2.Text.ToString() + "','" + txtkankurid2.Text.ToString() + "','" + txtkankurscore2.Text.ToString() + "','" + txtkankuryear3.Text.ToString() + "','" + txtkankurid3.Text.ToString() + "','" + txtkankurscore3.Text.ToString() + "')", con);
flpimage.SaveAs(Server.MapPath("~/File/") + flpimage.FileName);
string img = @"~/File/" + flpimage.FileName;
flpnidcard.SaveAs(Server.MapPath("~/Tazkiera/") + flpnidcard.FileName);
string img1 = @"~/Tazkiera/" + flpnidcard.FileName;
comm.Parameters.AddWithValue("CodNo", Convert.ToInt32(txtid.Text));
comm.Parameters.AddWithValue("image", flpimage.FileName);
comm.Parameters.AddWithValue("NIDCard", flpnidcard.FileName);
comm.ExecuteNonQuery();
con.Close();
Response.Redirect("~/SecondPage.aspx");
//Response.Write("<script>alert('Record Inserted')</script>");
}
}
Up to date 2020
confirmed working with:
"react-router-dom": "^5.1.2"
"react": "^16.10.2"
useHistory()
hook!import React from 'react';
import { useHistory } from "react-router-dom";
export function HomeSection() {
const history = useHistory();
const goLogin = () => history.push('login');
return (
<Grid>
<Row className="text-center">
<Col md={12} xs={12}>
<div className="input-group">
<span className="input-group-btn">
<button onClick={goLogin} type="button" />
</span>
</div>
</Col>
</Row>
</Grid>
);
}
Don't. Just catch the FileNotFoundException.
The file system has to test whether the file exists anyway. There is no point in doing all that twice, and several reasons not to, such as:
Don't try to second-guess the system. It knows. And don't try to predict the future. In general the best way to test whether any resource is available is just to try to use it.
For those not willing to use jQuery here is a Vanilla Javascript way of doing the same using classList:
function runOnScroll() {
var element = document.getElementsByTagName('nav') ;
if(document.body.scrollTop >= 50) {
element[0].classList.add('shrink')
} else {
element[0].classList.remove('shrink')
}
console.log(topMenu[0].classList)
};
There might be a nicer way of doing it using toggle, but the above works fine in Chrome
You want to use the gesturestart
, gesturechange
, and gestureend
events. These get triggered any time 2 or more fingers touch the screen.
Depending on what you need to do with the pinch gesture, your approach will need to be adjusted. The scale
multiplier can be examined to determine how dramatic the user's pinch gesture was. See Apple's TouchEvent documentation for details about how the scale
property will behave.
node.addEventListener('gestureend', function(e) {
if (e.scale < 1.0) {
// User moved fingers closer together
} else if (e.scale > 1.0) {
// User moved fingers further apart
}
}, false);
You could also intercept the gesturechange
event to detect a pinch as it happens if you need it to make your app feel more responsive.
You can get the file name, but you cannot get the full client file-system path.
Try to access to the value
attribute of your file input
on the change
event.
Most browsers will give you only the file name, but there are exceptions like IE8 which will give you a fake path like: "C:\fakepath\myfile.ext"
and older versions (IE <= 6) which actually will give you the full client file-system path (due its lack of security).
document.getElementById('fileInput').onchange = function () {
alert('Selected file: ' + this.value);
};
First, set customErrors = "Off" in the web.config and redeploy to get a more detailed error message that will help us diagnose the problem. You could also RDP into the instance and browse to the site from IIS locally to view the errors.
<system.web>
<customErrors mode="Off" />
First guess though - you have some references (most likely Azure SDK references) that are not set to Copy Local = true. So, all your dependencies are not getting deployed.
Get to the detailed error first and update your question.
UPDATE: A second option now available in VS2013 is Remote Debugging a Cloud Service or Virtual Machine.
I would add an android:onClick
to the layout and then change the layout in the activity.
So in the layout
<ImageView
(Other things like source etc.)
android:onClick="changelayout"
/>
Then in the activity add the following:
public void changelayout(View view){
setContentView(R.layout.second_layout);
}
You can have a debug.cmd that calls yourscript.cmd
yourscript.cmd > logall.txt
you schedule debug.cmd instead of yourscript.cmd
You can use DataFrame
constructor with lists
created by to_list
:
import pandas as pd
d1 = {'teams': [['SF', 'NYG'],['SF', 'NYG'],['SF', 'NYG'],
['SF', 'NYG'],['SF', 'NYG'],['SF', 'NYG'],['SF', 'NYG']]}
df2 = pd.DataFrame(d1)
print (df2)
teams
0 [SF, NYG]
1 [SF, NYG]
2 [SF, NYG]
3 [SF, NYG]
4 [SF, NYG]
5 [SF, NYG]
6 [SF, NYG]
df2[['team1','team2']] = pd.DataFrame(df2.teams.tolist(), index= df2.index)
print (df2)
teams team1 team2
0 [SF, NYG] SF NYG
1 [SF, NYG] SF NYG
2 [SF, NYG] SF NYG
3 [SF, NYG] SF NYG
4 [SF, NYG] SF NYG
5 [SF, NYG] SF NYG
6 [SF, NYG] SF NYG
And for new DataFrame
:
df3 = pd.DataFrame(df2['teams'].to_list(), columns=['team1','team2'])
print (df3)
team1 team2
0 SF NYG
1 SF NYG
2 SF NYG
3 SF NYG
4 SF NYG
5 SF NYG
6 SF NYG
Solution with apply(pd.Series)
is very slow:
#7k rows
df2 = pd.concat([df2]*1000).reset_index(drop=True)
In [121]: %timeit df2['teams'].apply(pd.Series)
1.79 s ± 52.5 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
In [122]: %timeit pd.DataFrame(df2['teams'].to_list(), columns=['team1','team2'])
1.63 ms ± 54.3 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
The accepted answer explains already well why the warning occurs. If you simply want to control the warnings, one could use precision_recall_fscore_support
. It offers a (semi-official) argument warn_for
that could be used to mute the warnings.
(_, _, f1, _) = metrics.precision_recall_fscore_support(y_test, y_pred,
average='weighted',
warn_for=tuple())
As mentioned already in some comments, use this with care.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]['value'] = "Some error";
}
}
So basically use $field
when you need the values, and $fields[$key]
when you need to change the data.
In R the equivalent function is seq
and you can use it with the option by
:
seq(from = 5, to = 100, by = 5)
# [1] 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
In addition to by
you can also have other options such as length.out
and along.with
.
length.out: If you want to get a total of 10 numbers between 0 and 1, for example:
seq(0, 1, length.out = 10)
# gives 10 equally spaced numbers from 0 to 1
along.with: It takes the length of the vector you supply as input and provides a vector from 1:length(input).
seq(along.with=c(10,20,30))
# [1] 1 2 3
Although, instead of using the along.with
option, it is recommended to use seq_along
in this case. From the documentation for ?seq
seq
is generic, and only the default method is described here. Note that it dispatches on the class of the first argument irrespective of argument names. This can have unintended consequences if it is called with just one argument intending this to be taken as along.with: it is much better to useseq_along
in that case.
seq_along: Instead of seq(along.with(.))
seq_along(c(10,20,30))
# [1] 1 2 3
Hope this helps.
This works. You create a method on Array by using prototype.
if (Array.prototype.allValuesSame === undefined) {
Array.prototype.allValuesSame = function() {
for (let i = 1; i < this.length; i++) {
if (this[i] !== this[0]) {
return false;
}
}
return true;
}
}
Call this in this way:
let a = ['a', 'a', 'a'];
let b = a.allValuesSame(); // true
a = ['a', 'b', 'a'];
b = a.allValuesSame(); // false
For this you can simply use the "HttpWebRequest" and "HttpWebResponse" classes in .net.
Below is a sample console app I wrote to demonstrate how easy this is.
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
namespace Test
{
class Program
{
static void Main(string[] args)
{
string url = "www.somewhere.com";
string fileName = @"C:\output.file";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Timeout = 5000;
try
{
using (WebResponse response = (HttpWebResponse)request.GetResponse())
{
using (FileStream stream = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
byte[] bytes = ReadFully(response.GetResponseStream());
stream.Write(bytes, 0, bytes.Length);
}
}
}
catch (WebException)
{
Console.WriteLine("Error Occured");
}
}
public static byte[] ReadFully(Stream input)
{
byte[] buffer = new byte[16 * 1024];
using (MemoryStream ms = new MemoryStream())
{
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
return ms.ToArray();
}
}
}
}
Enjoy!
Sqlite3 can't do that directly in SQL except via a SELECT, and while SELECT can return a "row" of expressions, I know of no way to make it return a phony column.
However, the CLI can do it:
.import FILE TABLE Import data from FILE into TABLE
.separator STRING Change separator used by output mode and .import
$ sqlite3 /tmp/test.db
SQLite version 3.5.9
Enter ".help" for instructions
sqlite> create table abc (a);
sqlite> .import /dev/tty abc
1
2
3
99
^D
sqlite> select * from abc;
1
2
3
99
sqlite>
If you do put a loop around an INSERT, rather than using the CLI .import
command, then be sure to follow the advice in the sqlite FAQ for INSERT speed:
By default, each INSERT statement is its own transaction. But if you surround multiple INSERT statements with BEGIN...COMMIT then all the inserts are grouped into a single transaction. The time needed to commit the transaction is amortized over all the enclosed insert statements and so the time per insert statement is greatly reduced.
Another option is to run PRAGMA synchronous=OFF. This command will cause SQLite to not wait on data to reach the disk surface, which will make write operations appear to be much faster. But if you lose power in the middle of a transaction, your database file might go corrupt.
This recursive function concatenates array of querysets into one queryset.
def merge_query(ar):
if len(ar) ==0:
return [ar]
while len(ar)>1:
tmp=ar[0] | ar[1]
ar[0]=tmp
ar.pop(1)
return ar
if (CollectionUtils.isNotEmpty(listName))
Is the same as:
if(listName != null && !listName.isEmpty())
In first approach listName
can be null and null pointer exception will not be thrown. In second approach you have to check for null manually. First approach is better because it requires less work from you. Using .size() != 0
is something unnecessary at all, also i learned that it is slower than using .isEmpty()
On Mac OS press: CMD
+OPTION
+J
for console
All the different answers on this topic are very confusing, so I’m hoping to give a bit more clarity with this overview of the different bindings of libmagic. Previously mammadori gave a short answer listing the available option.
magic
When determining a files mime-type, the tool of choice is simply called file
and its back-end is called libmagic
. (See the Project home page.) The project is developed in a private cvs-repository, but there is a read-only git mirror on github.
Now this tool, which you will need if you want to use any of the libmagic bindings with python, already comes with its own python bindings called file-magic
. There is not much dedicated documentation for them, but you can always have a look at the man page of the c-library: man libmagic
. The basic usage is described in the readme file:
import magic
detected = magic.detect_from_filename('magic.py')
print 'Detected MIME type: {}'.format(detected.mime_type)
print 'Detected encoding: {}'.format(detected.encoding)
print 'Detected file type name: {}'.format(detected.name)
Apart from this, you can also use the library by creating a Magic
object using magic.open(flags)
as shown in the example file.
Both toivotuo and ewr2san use these file-magic
bindings included in the file
tool. They mistakenly assume, they are using the python-magic
package. This seems to indicate, that if both file
and python-magic
are installed, the python module magic
refers to the former one.
magic
This is the library that Simon Zimmermann talks about in his answer and which is also employed by Claude COULOMBE as well as Gringo Suave.
magic
Note: This project was last updated in 2013!
Due to being based on the same c-api, this library has some similarity with file-magic
included in libmagic
. It is only mentioned by mammadori and no other answer employs it.
Include <%@ page isELIgnored="false"%>
on top of your jsp page.
FYI
PyQt is now available on all platforms via conda!
Useconda install pyqt
to get these #Python bindings for the Qt framework. @ 1:02 PM - 1 May 2014
In Activity:
@Override
protected void onCreate(Bundle savedInstanceState) {
image = (ImageView) findViewById(R.id.imageButton);
image.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
SimpleDateFormat sdfPic = new SimpleDateFormat(DATE_FORMAT);
currentDateandTime = sdfPic.format(new Date()).replace(" ", "");
File imagesFolder = new File(IMAGE_PATH, currentDateandTime);
imagesFolder.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = IMAGE_NAME + n + IMAGE_FORMAT;
File file = new File(imagesFolder, fname);
outputFileUri = Uri.fromFile(file);
cameraIntent= new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, CAMERA_DATA);
}catch(Exception e) {
e.printStackTrace();
}
}
});
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case CAMERA_DATA :
final int IMAGE_MAX_SIZE = 300;
try {
// Bitmap bitmap;
File file = null;
FileInputStream fis;
BitmapFactory.Options opts;
int resizeScale;
Bitmap bmp;
file = new File(outputFileUri.getPath());
// This bit determines only the width/height of the
// bitmap
// without loading the contents
opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
fis = new FileInputStream(file);
BitmapFactory.decodeStream(fis, null, opts);
fis.close();
// Find the correct scale value. It should be a power of
// 2
resizeScale = 1;
if (opts.outHeight > IMAGE_MAX_SIZE
|| opts.outWidth > IMAGE_MAX_SIZE) {
resizeScale = (int) Math.pow(2, (int) Math.round(Math.log(IMAGE_MAX_SIZE/ (double) Math.max(opts.outHeight, opts.outWidth)) / Math.log(0.5)));
}
// Load pre-scaled bitmap
opts = new BitmapFactory.Options();
opts.inSampleSize = resizeScale;
fis = new FileInputStream(file);
bmp = BitmapFactory.decodeStream(fis, null, opts);
Bitmap getBitmapSize = BitmapFactory.decodeResource(
getResources(), R.drawable.male);
image.setLayoutParams(new RelativeLayout.LayoutParams(
200,200));//(width,height);
image.setImageBitmap(bmp);
image.setRotation(90);
fis.close();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 70, baos);
imageByte = baos.toByteArray();
break;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
in layout.xml:
enter code here
<RelativeLayout
android:id="@+id/relativeLayout2"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/imageButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/XXXXXXX"
android:textAppearance="?android:attr/textAppearanceSmall" />
in manifest.xml:
<uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.camera" />
In case you get this error, it might also be related to how you included the JavaScript file into your html page. When loading modules, you have to explicitly declare those files as such. Here's an example:
//module.js:
function foo(){
return "foo";
}
var bar = "bar";
export { foo, bar };
When you include the script like this:
<script src="module.js"></script>
You will get the error:
Uncaught SyntaxError: Unexpected token export
You need to include the file with a type attribute set to "module":
<script type="module" src="module.js"></script>
then it should work as expected and you are ready to import your module in another module:
import { foo, bar } from "./module.js";
console.log( foo() );
console.log( bar );
Actually emberjs
supports two-way binding, which is one of the most powerful feature for a javascript MVC framework. You can check it out where it mentioning binding
in its user guide.
for emberjs, to create two way binding is by creating a new property with the string Binding at the end, then specifying a path from the global scope:
App.wife = Ember.Object.create({
householdIncome: 80000
});
App.husband = Ember.Object.create({
householdIncomeBinding: 'App.wife.householdIncome'
});
App.husband.get('householdIncome'); // 80000
// Someone gets raise.
App.husband.set('householdIncome', 90000);
App.wife.get('householdIncome'); // 90000
Note that bindings don't update immediately. Ember waits until all of your application code has finished running before synchronizing changes, so you can change a bound property as many times as you'd like without worrying about the overhead of syncing bindings when values are transient.
Hope it helps in extend of original answer selected.
webpack
is not only in your node-modules/webpack/bin/
directory, it's also linked in node_modules/.bin
.
You have the npm bin
command to get the folder where npm will install executables.
You can use the scripts
property of your package.json
to use webpack from this directory which will be exported.
"scripts": {
"scriptName": "webpack --config etc..."
}
For example:
"scripts": {
"build": "webpack --config webpack.config.js"
}
You can then run it with:
npm run build
Or even with arguments:
npm run build -- <args>
This allow you to have you webpack.config.js
in the root folder of your project without having webpack globally installed or having your webpack configuration in the node_modules
folder.
Wikipedia (or rather, the community on Wikipedia) keeps a pretty good up-to-date list here.
Yes it is possible
You can do this using only
HTML
You need to set default select optiondisabled=""
andselected=""
and select tagrequired=""
. Browser doesn't allow user to submit the form without selecting an option.
<form action="" method="POST">
<select name="in-op" required="">
<option disabled="" selected="">Select Option</option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
<input type="submit" value="Submit">
</form>
When I changed 'iOS Deployment Target' from 'IOS 10.0' to current one (my phone's) 'iOS 10.2', the problem was gone for me.
Building Settings>Deployment>iOS Deployment Target
I've dumped nodemon
and ts-node
in favor of a much better alternative, ts-node-dev
https://github.com/whitecolor/ts-node-dev
Just run ts-node-dev src/index.ts
nuget package manager gui extension is a GUI tool that lets you easily update/remove/install packages from Nuget server for .NET Core/.Net 5 projects
> To install new package:
For update/remove the packages click Update/Remove Packages
I agree with much that Manuel has said. In fact, his comments refer to this url...
http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4
... which states:
The content type "application/x-www-form-urlencoded" is inefficient for sending large quantities of binary data or text containing non-ASCII characters. The content type "multipart/form-data" should be used for submitting forms that contain files, non-ASCII data, and binary data.
However, for me it would come down to tool/framework support.
If you get a clear idea of your users, and how they'll make use of your API, then that will help you decide. If you make the upload of files hard for your API users then they'll move away, of you'll spend a lot of time on supporting them.
Secondary to this would be the tool support YOU have for writing your API and how easy it is for your to accommodate one upload mechanism over the other.
Most of these answers are out of date. JsonResponse is not recommended because it escapes the characters, which is usually undesired. Here's what I use:
views.py (returns HTML)
from django.shortcuts import render
from django.core import serializers
def your_view(request):
data = serializers.serialize('json', YourModel.objects.all())
context = {"data":data}
return render(request, "your_view.html", context)
views.py (returns JSON)
from django.core import serializers
from django.http import HttpResponse
def your_view(request):
data = serializers.serialize('json', YourModel.objects.all())
return HttpResponse(data, content_type='application/json')
Bonus for Vue Users
If you want to bring your Django Queryset into Vue, you can do the following.
template.html
<div id="dataJson" style="display:none">
{{ data }}
</div>
<script>
let dataParsed = JSON.parse(document.getElementById('dataJson').textContent);
var app = new Vue({
el: '#app',
data: {
yourVariable: dataParsed,
},
})
</script>
It worked for me, when I set error_reporting in two places at same time
somewhere in PHP code
ini_set('error_reporting', 30711);
and in .htaccess file
php_value error_reporting 30711
EventHandler.GetInvocationList().Length > 0
My 'Map' implementation, derived from Christoph's example:
Example usage:
var map = new Map(); // Creates an "in-memory" map
var map = new Map("storageId"); // Creates a map that is loaded/persisted using html5 storage
function Map(storageId) {
this.current = undefined;
this.size = 0;
this.storageId = storageId;
if (this.storageId) {
this.keys = new Array();
this.disableLinking();
}
}
Map.noop = function() {
return this;
};
Map.illegal = function() {
throw new Error("illegal operation for maps without linking");
};
// Map initialisation from an existing object
// doesn't add inherited properties if not explicitly instructed to:
// omitting foreignKeys means foreignKeys === undefined, i.e. == false
// --> inherited properties won't be added
Map.from = function(obj, foreignKeys) {
var map = new Map;
for(var prop in obj) {
if(foreignKeys || obj.hasOwnProperty(prop))
map.put(prop, obj[prop]);
}
return map;
};
Map.prototype.disableLinking = function() {
this.link = Map.noop;
this.unlink = Map.noop;
this.disableLinking = Map.noop;
this.next = Map.illegal;
this.key = Map.illegal;
this.value = Map.illegal;
// this.removeAll = Map.illegal;
return this;
};
// Overwrite in Map instance if necessary
Map.prototype.hash = function(value) {
return (typeof value) + ' ' + (value instanceof Object ?
(value.__hash || (value.__hash = ++arguments.callee.current)) :
value.toString());
};
Map.prototype.hash.current = 0;
// --- Mapping functions
Map.prototype.get = function(key) {
var item = this[this.hash(key)];
if (item === undefined) {
if (this.storageId) {
try {
var itemStr = localStorage.getItem(this.storageId + key);
if (itemStr && itemStr !== 'undefined') {
item = JSON.parse(itemStr);
this[this.hash(key)] = item;
this.keys.push(key);
++this.size;
}
} catch (e) {
console.log(e);
}
}
}
return item === undefined ? undefined : item.value;
};
Map.prototype.put = function(key, value) {
var hash = this.hash(key);
if(this[hash] === undefined) {
var item = { key : key, value : value };
this[hash] = item;
this.link(item);
++this.size;
}
else this[hash].value = value;
if (this.storageId) {
this.keys.push(key);
try {
localStorage.setItem(this.storageId + key, JSON.stringify(this[hash]));
} catch (e) {
console.log(e);
}
}
return this;
};
Map.prototype.remove = function(key) {
var hash = this.hash(key);
var item = this[hash];
if(item !== undefined) {
--this.size;
this.unlink(item);
delete this[hash];
}
if (this.storageId) {
try {
localStorage.setItem(this.storageId + key, undefined);
} catch (e) {
console.log(e);
}
}
return this;
};
// Only works if linked
Map.prototype.removeAll = function() {
if (this.storageId) {
for (var i=0; i<this.keys.length; i++) {
this.remove(this.keys[i]);
}
this.keys.length = 0;
} else {
while(this.size)
this.remove(this.key());
}
return this;
};
// --- Linked list helper functions
Map.prototype.link = function(item) {
if (this.storageId) {
return;
}
if(this.size == 0) {
item.prev = item;
item.next = item;
this.current = item;
}
else {
item.prev = this.current.prev;
item.prev.next = item;
item.next = this.current;
this.current.prev = item;
}
};
Map.prototype.unlink = function(item) {
if (this.storageId) {
return;
}
if(this.size == 0)
this.current = undefined;
else {
item.prev.next = item.next;
item.next.prev = item.prev;
if(item === this.current)
this.current = item.next;
}
};
// --- Iterator functions - only work if map is linked
Map.prototype.next = function() {
this.current = this.current.next;
};
Map.prototype.key = function() {
if (this.storageId) {
return undefined;
} else {
return this.current.key;
}
};
Map.prototype.value = function() {
if (this.storageId) {
return undefined;
}
return this.current.value;
};
Found this while Googling. The second post makes a point about the different phases of JSF, which might be causing your error message to become lost. Also, try null in place of "newPassword" because you do not have any object with the id newPassword.
I just made this little trick :
window.getRunningScript = () => {
return () => {
return new Error().stack.match(/([^ \n])*([a-z]*:\/\/\/?)*?[a-z0-9\/\\]*\.js/ig)[0]
}
}
console.log('%c Currently running script:', 'color: blue', getRunningScript()())
? Works on: Chrome, Firefox, Edge, Opera
Enjoy !
That's not exactly what I had in mind. What do you do if you have a generic type to only be known at runtime?
public MyDTO toObject() {
try {
var methodInfo = MethodBase.GetCurrentMethod();
if (methodInfo.DeclaringType != null) {
var fullName = methodInfo.DeclaringType.FullName + "." + this.dtoName;
Type type = Type.GetType(fullName);
if (type != null) {
var obj = JsonConvert.DeserializeObject(payload);
//var obj = JsonConvert.DeserializeObject<type.MemberType.GetType()>(payload); // <--- type ?????
...
}
}
// Example for java.. Convert this to C#
return JSONUtil.fromJSON(payload, Class.forName(dtoName, false, getClass().getClassLoader()));
} catch (Exception ex) {
throw new ReflectInsightException(MethodBase.GetCurrentMethod().Name, ex);
}
}
In Visual Studio 2012 you have to use (I think in Visual Studio 2010, too)
if $(Configuration) == Debug xcopy
$(ConfigurationName)
was listed as a macro, but it wasn't assigned.
A fun, but useless way to do this:
az = ('a'..'z').to_a
azz = az.map{|e| [e, az.index(e)+2]}
If you are having this issue with a modal (pop-up), note that it may be that another element with the same properties exists underneath the current top level modal. This caught me out, just increase the specificity of your selector to reduce the scope to that of the modal you are trying to click only.
Component code:
import { Component } from "@angular/core";
@Component({
templateUrl:"home.html"
})
export class HomePage {
public items: Array<string>;
constructor() {
this.items = ["item1", "item2", "item3"]
}
public open(event, item) {
alert('Open ' + item);
}
}
View:
<ion-header>
<ion-navbar primary>
<ion-title>
<span>My App</span>
</ion-title>
</ion-navbar>
</ion-header>
<ion-content>
<ion-list>
<ion-item *ngFor="let item of items" (click)="open($event, item)">
{{ item }}
</ion-item>
</ion-list>
</ion-content>
As you can see in the code, I'm declaring the click handler like this (click)="open($event, item)"
and sending both the event and the item (declared in the *ngFor
) to the open()
method (declared in the component code).
If you just want to show the item and you don't need to get info from the event, you can just do (click)="open(item)"
and modify the open
method like this public open(item) { ... }
I see a lot of complicated answers here. Some of them, fail to knowledge simple, true email address, or have false positives. Below, is the simplest way of testing that the string would be a valid email. It tests against 2 and 3 letter TLD's. Now that you technically can have larger ones, you may wish to increase the 3 to 4, 5 or even 10.
import re
def valid_email(email):
return bool(re.search(r"^[\w\.\+\-]+\@[\w]+\.[a-z]{2,3}$", email))
The problem is that you used the select option, this is where you went wrong. Select signifies that a textbox or textArea has a focus. What you need to do is use change. "Fires when a new choice is made in a select element", also used like blur when moving away from a textbox or textArea.
function start(){
document.getElementById("activitySelector").addEventListener("change", addActivityItem, false);
}
function addActivityItem(){
//option is selected
alert("yeah");
}
window.addEventListener("load", start, false);
extension Sequence where Element: Hashable {
func unique() -> [Element] {
NSOrderedSet(array: self as! [Any]).array as! [Element]
}
}
use the relative path
main page might be: /index.html
secondary page: /otherFolder/otherpage.html
link would be like so:
<a href="/otherFolder/otherpage.html">otherpage</a>
Most of it is explained in the GC Tuning Guide (which you would do well to read anyway).
The command line option
-verbose:gc
causes information about the heap and garbage collection to be printed at each collection. For example, here is output from a large server application:[GC 325407K->83000K(776768K), 0.2300771 secs] [GC 325816K->83372K(776768K), 0.2454258 secs] [Full GC 267628K->83769K(776768K), 1.8479984 secs]
Here we see two minor collections followed by one major collection. The numbers before and after the arrow (e.g.,
325407K->83000K
from the first line) indicate the combined size of live objects before and after garbage collection, respectively. After minor collections the size includes some objects that are garbage (no longer alive) but that cannot be reclaimed. These objects are either contained in the tenured generation, or referenced from the tenured or permanent generations.The next number in parentheses (e.g.,
(776768K)
again from the first line) is the committed size of the heap: the amount of space usable for java objects without requesting more memory from the operating system. Note that this number does not include one of the survivor spaces, since only one can be used at any given time, and also does not include the permanent generation, which holds metadata used by the virtual machine.The last item on the line (e.g.,
0.2300771 secs
) indicates the time taken to perform the collection; in this case approximately a quarter of a second.The format for the major collection in the third line is similar.
The format of the output produced by
-verbose:gc
is subject to change in future releases.
I'm not certain why there's a PSYoungGen in yours; did you change the garbage collector?
The following is aimed at beginners to ASP.Net...
A postback originates from the client browser. Usually one of the controls on the page will be manipulated by the user (a button clicked or dropdown changed, etc), and this control will initiate a postback. The state of this control, plus all other controls on the page,(known as the View State) is Posted Back to the web server.
Most commonly the postback causes the web server to create an instance of the code behind class of the page that initiated the postback. This page object is then executed within the normal page lifecycle with a slight difference (see below). If you do not redirect the user specifically to another page somewhere during the page lifecycle, the final result of the postback will be the same page displayed to the user again, and then another postback could happen, and so on.
The web application is running on the web server. In order to process the user’s response, cause the application state to change, or move to a different page, you need to get some code to execute on the web server. The only way to achieve this is to collect up all the information that the user is currently working on and send it all back to the server.
Some things for a beginner to note are...
you can use CASE
WHEN
as follow as achieve the as IF
ELSE
.
SELECT FROM A a
LEFT JOIN B b
ON a.col1 = b.col1
AND (CASE
WHEN a.col2 like '0%' then TRIM(LEADING '0' FROM a.col2)
ELSE substring(a.col2,1,2)
END
)=b.col2;
p.s:just in case somebody needs this way.
Starting Python 3.8
, the standard library provides the NormalDist
object as part of the statistics
module:
from statistics import NormalDist
def confidence_interval(data, confidence=0.95):
dist = NormalDist.from_samples(data)
z = NormalDist().inv_cdf((1 + confidence) / 2.)
h = dist.stdev * z / ((len(data) - 1) ** .5)
return dist.mean - h, dist.mean + h
This:
Creates a NormalDist
object from the data sample (NormalDist.from_samples(data)
, which gives us access to the sample's mean and standard deviation via NormalDist.mean
and NormalDist.stdev
.
Compute the Z-score
based on the standard normal distribution (represented by NormalDist()
) for the given confidence using the inverse of the cumulative distribution function (inv_cdf
).
Produces the confidence interval based on the sample's standard deviation and mean.
This assumes the sample size is big enough (let's say more than ~100 points) in order to use the standard normal distribution rather than the student's t distribution to compute the z
value.
Well, you cloud provide all the information with following command in CLI, if connection requires in SSL mode:
psql "sslmode=verify-ca sslrootcert=server-ca.pem sslcert=client-cert.pem sslkey=client-key.pem hostaddr=your_host port=5432 user=your_user dbname=your_db"
Did someone say code golf? =)
The following is my attempt at improving my handicap while catching up with the times. Supplied for your convenience.
function decode_base64(s) {
var b=l=0, r='',
m='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
s.split('').forEach(function (v) {
b=(b<<6)+m.indexOf(v); l+=6;
if (l>=8) r+=String.fromCharCode((b>>>(l-=8))&0xff);
});
return r;
}
What I was actually after was an asynchronous implementation and to my surprise it turns out forEach
as opposed to JQuery's $([]).each
method implementation is very much synchronous.
If you also had such crazy notions in mind a 0 delay window.setTimeout
will run the base64 decode asynchronously and execute the callback function with the result when done.
function decode_base64_async(s, cb) {
setTimeout(function () { cb(decode_base64(s)); }, 0);
}
@Toothbrush suggested "index a string like an array", and get rid of the split
. This routine seems really odd and not sure how compatible it will be, but it does hit another birdie so lets have it.
function decode_base64(s) {
var b=l=0, r='',
m='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
[].forEach.call(s, function (v) {
b=(b<<6)+m.indexOf(v); l+=6;
if (l>=8) r+=String.fromCharCode((b>>>(l-=8))&0xff);
});
return r;
}
While trying to find more information on JavaScript string as array I stumbled on this pro tip using a /./g
regex to step through a string. This reduces the code size even more by replacing the string in place and eliminating the need of keeping a return variable.
function decode_base64(s) {
var b=l=0,
m='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
return s.replace(/./g, function (v) {
b=(b<<6)+m.indexOf(v); l+=6;
return l<8?'':String.fromCharCode((b>>>(l-=8))&0xff);
});
}
If however you were looking for something a little more traditional perhaps the following is more to your taste.
function decode_base64(s) {
var b=l=0, r='', s=s.split(''), i,
m='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
for (i in s) {
b=(b<<6)+m.indexOf(s[i]); l+=6;
if (l>=8) r+=String.fromCharCode((b>>>(l-=8))&0xff);
}
return r;
}
I didn't have the trailing null issue so this was removed to remain under par but it should easily be resolved with a trim()
or a trimRight()
if you'd prefer, should this pose a problem for you.
ie.
return r.trimRight();
The result is an ascii byte string, if you need unicode the easiest is to escape
the byte string which can then be decoded with decodeURIComponent
to produce the unicode string.
function decode_base64_usc(s) {
return decodeURIComponent(escape(decode_base64(s)));
}
Since escape
is being deprecated we could change our function to support unicode directly without the need for escape
or String.fromCharCode
we can produce a %
escaped string ready for URI decoding.
function decode_base64(s) {
var b=l=0,
m='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
return decodeURIComponent(s.replace(/./g, function (v) {
b=(b<<6)+m.indexOf(v); l+=6;
return l<8?'':'%'+(0x100+((b>>>(l-=8))&0xff)).toString(16).slice(-2);
}));
}
nJoy!
As of Pandas version 0.16.0 you can use assign
as follows:
df = pd.DataFrame({"A": [1,2,3], "B": [4,6,9]})
df.assign(C = df.A + df.B)
# Out[383]:
# A B C
# 0 1 4 5
# 1 2 6 8
# 2 3 9 12
You can add multiple columns this way as follows:
df.assign(C = df.A + df.B,
Diff = df.B - df.A,
Mult = df.A * df.B)
# Out[379]:
# A B C Diff Mult
# 0 1 4 5 3 4
# 1 2 6 8 4 12
# 2 3 9 12 6 27
$(document.createElement("img")).attr({
src: 'https://graph.facebook.com/'+friend.id+'/picture',
title: friend.name ,
'data-friend-id':friend.id,
'data-friend-name':friend.name
}).appendTo(divContainer);
Thanks Rich, I will take note of that. So here is the script for my own solution. It requires no third party unzip tools.
Include the script below at the start of the batch file to create the function, and then to call the function, the command is...
cscript /B j_unzip.vbs zip_file_name_goes_here.zip
Here is the script to add to the top...
REM Changing working folder back to current directory for Vista & 7 compatibility %~d0 CD %~dp0 REM Folder changed REM This script upzip's files... > j_unzip.vbs ECHO ' >> j_unzip.vbs ECHO ' UnZip a file script >> j_unzip.vbs ECHO ' >> j_unzip.vbs ECHO ' It's a mess, I know!!! >> j_unzip.vbs ECHO ' >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO ' Dim ArgObj, var1, var2 >> j_unzip.vbs ECHO Set ArgObj = WScript.Arguments >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO If (Wscript.Arguments.Count ^> 0) Then >> j_unzip.vbs ECHO. var1 = ArgObj(0) >> j_unzip.vbs ECHO Else >> j_unzip.vbs ECHO. var1 = "" >> j_unzip.vbs ECHO End if >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO If var1 = "" then >> j_unzip.vbs ECHO. strFileZIP = "example.zip" >> j_unzip.vbs ECHO Else >> j_unzip.vbs ECHO. strFileZIP = var1 >> j_unzip.vbs ECHO End if >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO 'The location of the zip file. >> j_unzip.vbs ECHO REM Set WshShell = CreateObject("Wscript.Shell") >> j_unzip.vbs ECHO REM CurDir = WshShell.ExpandEnvironmentStrings("%%cd%%") >> j_unzip.vbs ECHO Dim sCurPath >> j_unzip.vbs ECHO sCurPath = CreateObject("Scripting.FileSystemObject").GetAbsolutePathName(".") >> j_unzip.vbs ECHO strZipFile = sCurPath ^& "\" ^& strFileZIP >> j_unzip.vbs ECHO 'The folder the contents should be extracted to. >> j_unzip.vbs ECHO outFolder = sCurPath ^& "\" >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO. WScript.Echo ( "Extracting file " ^& strFileZIP) >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO Set objShell = CreateObject( "Shell.Application" ) >> j_unzip.vbs ECHO Set objSource = objShell.NameSpace(strZipFile).Items() >> j_unzip.vbs ECHO Set objTarget = objShell.NameSpace(outFolder) >> j_unzip.vbs ECHO intOptions = 256 >> j_unzip.vbs ECHO objTarget.CopyHere objSource, intOptions >> j_unzip.vbs ECHO. >> j_unzip.vbs ECHO. WScript.Echo ( "Extracted." ) >> j_unzip.vbs ECHO.
Try this. It worked for me.
{{ html_entity_decode($text) }}
In Laravel Blade template, {{ }} wil escape html. If you want to display html from controller in view, decode html from string.
If you have an imageView like this:
<ImageView
android:id="@+id/color_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:src="@drawable/circle_color"/>
which give it a drawable shape as src, you can use this code to change shape's color:
ImageView iv = (ImageView)findViewById(R.id.color_button);
GradientDrawable bgShape = (GradientDrawable)iv.getDrawable();
bgShape.setColor(Color.BLACK);
The Heroku CLI has an easy shortcut for this. For an app named 'falling-wind-1624':
$ heroku git:remote -a falling-wind-1624
Git remote heroku added.
See https://devcenter.heroku.com/articles/git#creating-a-heroku-remote
Are you talking about gets
?
puts "Enter A"
a = gets.chomp
puts "Enter B"
b = gets.chomp
c = a.to_i + b.to_i
puts c
Something like that?
Kernel.gets
tries to read the params found in ARGV
and only asks to console if not ARGV
found. To force to read from console even if ARGV
is not empty use STDIN.gets
As for me it was enough to copy all property fields from the base class to the parent like this:
using System.Reflection;
public static ChildClass Clone(BaseClass b)
{
ChildClass p = new ChildClass(...);
// Getting properties of base class
PropertyInfo[] properties = typeof(BaseClass).GetProperties();
// Copy all properties to parent class
foreach (PropertyInfo pi in properties)
{
if (pi.CanWrite)
pi.SetValue(p, pi.GetValue(b, null), null);
}
return p;
}
An universal solution for any object can be found here
Use This method very simple easy to use
HttpServletRequest request = (HttpServletRequest) context.getExternalContext().getNativeRequest();
request.getSession().setAttribute("errorMsg", "your massage");
in jsp once use then remove
<c:remove var="errorMsg" scope="session"/>
Your problem is that you have to change:
printf("%");
to
printf("%%");
Or you could use ASCII code and write:
printf("%c", 37);
:)
As the official documentation says:
body - entity body for PATCH, POST and PUT requests. Must be a Buffer, String or ReadStream. If json is true, then body must be a JSON-serializable object.
When sending JSON you just have to put it in body of the option.
var options = {
uri: 'https://myurl.com',
method: 'POST',
json: true,
body: {'my_date' : 'json'}
}
request(options, myCallback)
this is how i did it:
String[] listAges = getResources().getStringArray(R.array.ages);
// Creating adapter for spinner
ArrayAdapter<String> dataAdapter =
new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, listAges);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner_age.getBackground().setColorFilter(ContextCompat.getColor(this, R.color.spinner_icon), PorterDuff.Mode.SRC_ATOP);
spinner_age.setAdapter(dataAdapter);
spinner_age.setSelection(0);
spinner_age.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String item = parent.getItemAtPosition(position).toString();
if(position > 0){
// get spinner value
Toast.makeText(parent.getContext(), "Age..." + item, Toast.LENGTH_SHORT).show();
}else{
// show toast select gender
Toast.makeText(parent.getContext(), "none" + item, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Guessing you probably just want to format the output date? then this is what you are after
SELECT *, DATE_FORMAT(date,'%d/%m/%Y') AS niceDate
FROM table
ORDER BY date DESC
LIMIT 0,14
Or do you actually want to sort by Day before Month before Year?
See ?merge
:
the name "row.names" or the number 0 specifies the row names.
Example:
R> de <- merge(d, e, by=0, all=TRUE) # merge by row names (by=0 or by="row.names")
R> de[is.na(de)] <- 0 # replace NA values
R> de
Row.names a b c d e f g h i j k l m n o p q r s
1 1 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19
2 2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0 0 0 0 0 0 0 0
3 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 21 22 23 24 25 26 27 28 29
t
1 20
2 0
3 30
Unfortunately, most of the articles on state machines are written for C++ or other languages that have direct support for polymorphism as it's nice to model the states in an FSM implementation as classes that derive from an abstract state class.
However, it's pretty easy to implement state machines in C using either switch statements to dispatch events to states (for simple FSMs, they pretty much code right up) or using tables to map events to state transitions.
There are a couple of simple, but decent articles on a basic framework for state machines in C here:
Edit: Site "under maintenance", web archive links:
switch
statement-based state machines often use a set of macros to 'hide' the mechanics of the switch
statement (or use a set of if
/then
/else
statements instead of a switch
) and make what amounts to a "FSM language" for describing the state machine in C source. I personally prefer the table-based approach, but these certainly have merit, are widely used, and can be effective especially for simpler FSMs.
One such framework is outlined by Steve Rabin in "Game Programming Gems" Chapter 3.0 (Designing a General Robust AI Engine).
A similar set of macros is discussed here:
If you're also interested in C++ state machine implementations there's a lot more that can be found. I'll post pointers if you're interested.
There are many ways to debug JavaScript code. Following two approaches are widely used to debug JavaScript via code
Using console.log()
to print out the values in the browser
console. (This will help you understand the values at certain points
of your code)
Debugger keyword. Add debugger;
to the locations you want to
debug, and open the browser's developer console and navigate to the
sources tab.
For more tools and ways in which you debug JavaScript Code, are given in this link by W3School.
Use Hosts Commander. It's simple and powerful. Translated description (from russian) here.
hosts add another.dev 192.168.1.1 # Remote host
hosts add test.local # 127.0.0.1 used by default
hosts set myhost.dev # new comment
hosts rem *.local
hosts enable local*
hosts disable localhost
...and many others...
Usage:
hosts - run hosts command interpreter
hosts <command> <params> - execute hosts command
Commands:
add <host> <aliases> <addr> # <comment> - add new host
set <host|mask> <addr> # <comment> - set ip and comment for host
rem <host|mask> - remove host
on <host|mask> - enable host
off <host|mask> - disable host
view [all] <mask> - display enabled and visible, or all hosts
hide <host|mask> - hide host from 'hosts view'
show <host|mask> - show host in 'hosts view'
print - display raw hosts file
format - format host rows
clean - format and remove all comments
rollback - rollback last operation
backup - backup hosts file
restore - restore hosts file from backup
recreate - empty hosts file
open - open hosts file in notepad
First, in your database, create the following two objects:
CREATE TYPE dbo.IDList
AS TABLE
(
ID INT
);
GO
CREATE PROCEDURE dbo.DoSomethingWithEmployees
@List AS dbo.IDList READONLY
AS
BEGIN
SET NOCOUNT ON;
SELECT ID FROM @List;
END
GO
Now in your C# code:
// Obtain your list of ids to send, this is just an example call to a helper utility function
int[] employeeIds = GetEmployeeIds();
DataTable tvp = new DataTable();
tvp.Columns.Add(new DataColumn("ID", typeof(int)));
// populate DataTable from your List here
foreach(var id in employeeIds)
tvp.Rows.Add(id);
using (conn)
{
SqlCommand cmd = new SqlCommand("dbo.DoSomethingWithEmployees", conn);
cmd.CommandType = CommandType.StoredProcedure;
SqlParameter tvparam = cmd.Parameters.AddWithValue("@List", tvp);
// these next lines are important to map the C# DataTable object to the correct SQL User Defined Type
tvparam.SqlDbType = SqlDbType.Structured;
tvparam.TypeName = "dbo.IDList";
// execute query, consume results, etc. here
}
If you are using SQL Server 2005, I would still recommend a split function over XML. First, create a function:
CREATE FUNCTION dbo.SplitInts
(
@List VARCHAR(MAX),
@Delimiter VARCHAR(255)
)
RETURNS TABLE
AS
RETURN ( SELECT Item = CONVERT(INT, Item) FROM
( SELECT Item = x.i.value('(./text())[1]', 'varchar(max)')
FROM ( SELECT [XML] = CONVERT(XML, '<i>'
+ REPLACE(@List, @Delimiter, '</i><i>') + '</i>').query('.')
) AS a CROSS APPLY [XML].nodes('i') AS x(i) ) AS y
WHERE Item IS NOT NULL
);
GO
Now your stored procedure can just be:
CREATE PROCEDURE dbo.DoSomethingWithEmployees
@List VARCHAR(MAX)
AS
BEGIN
SET NOCOUNT ON;
SELECT EmployeeID = Item FROM dbo.SplitInts(@List, ',');
END
GO
And in your C# code you just have to pass the list as '1,2,3,12'
...
I find the method of passing through table valued parameters simplifies the maintainability of a solution that uses it and often has increased performance compared to other implementations including XML and string splitting.
The inputs are clearly defined (no one has to guess if the delimiter is a comma or a semi-colon) and we do not have dependencies on other processing functions that are not obvious without inspecting the code for the stored procedure.
Compared to solutions involving user defined XML schema instead of UDTs, this involves a similar number of steps but in my experience is far simpler code to manage, maintain and read.
In many solutions you may only need one or a few of these UDTs (User defined Types) that you re-use for many stored procedures. As with this example, the common requirement is to pass through a list of ID pointers, the function name describes what context those Ids should represent, the type name should be generic.
For me it was because they are not in the same namespace. After I remove my AppStart from "project.Startup.AppStart" and let they both Startup.cs and Startup.Auth.cs with "project.Startup" namespace, everything was back to work perfectly.
I hope it help!
The algorithm has been designed to support arbitrary input length. I.e you can compute hashes of big files like ISO of a DVD...
If there is a limitation for the input it could come from the environment where the hash function is used. Let's say you want to compute a file and the environment has a MAX_FILE limit.
But the output string will be always the same: 32 hex chars (128 bits)!
I resolved this issue with
sudo rm /usr/bin/java
And I downloaded and installed the last Java SE Runtime Environment: http://www.oracle.com/technetwork/java/javase/downloads/index.html
sudo ln -s /Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/bin/java /usr/bin/java
did not work for me because I got Operation not permitted
. El Capitan now protects certain system directories in "rootless" mode (a.k.a. System Integrity Protection). It is applicable to macOS Sierra, and probably new macOS versions for the foreseeable future.
I got solution for this kind of problem by selecting this option at the time of build export.
Regularly I select second option for build export process but after installing Xcode 7.3 when I try to export build at that time I receive above error. After some sort of forum discussion, I conclude that I need to select last option now to export build.
I hope this information become helpful to other members of forum as well.
public static void main(String[] args) {
try {
String keystorePass = "20174";
String keyPass = "rav@789";
String alias = "TyaGi!";
InputStream keystoreStream = new FileInputStream("D:/keyFile.jks");
KeyStore keystore = KeyStore.getInstance("JCEKS");
keystore.load(keystoreStream, keystorePass.toCharArray());
Key key = keystore.getKey(alias, keyPass.toCharArray());
byte[] bt = key.getEncoded();
String s = new String(bt);
System.out.println("------>"+s);
String str12 = Base64.encodeBase64String(bt);
System.out.println("Fetched Key From JKS : " + str12);
} catch (KeyStoreException | IOException | NoSuchAlgorithmException | CertificateException | UnrecoverableKeyException ex) {
System.out.println(ex);
}
}
The solution above from edwardthesecond worked for me too on Sierra
brew install openssl
cd /usr/local/include
ln -s ../opt/openssl/include/openssl
./configure && make
Other steps I did before were:
installing openssl via brew
brew install openssl
adding openssl to the path as suggested by homebrew
brew info openssl
echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
--save-dev
saves semver spec into "devDependencies" array in your package descriptor file, --save
saves it into "dependencies" instead.
Problems only surface when I am I trying to give the first loaded content an active state
Does this mean that you want to add a class to the first button?
$('.o-links').click(function(e) { // ... }).first().addClass('O_Nav_Current');
instead of using IDs for the slider's items and resetting html contents you can use classes and indexes:
CSS:
.image-area { width: 100%; height: auto; display: none; } .image-area:first-of-type { display: block; }
JavaScript:
var $slides = $('.image-area'), $btns = $('a.o-links'); $btns.on('click', function (e) { var i = $btns.removeClass('O_Nav_Current').index(this); $(this).addClass('O_Nav_Current'); $slides.filter(':visible').fadeOut(1000, function () { $slides.eq(i).fadeIn(1000); }); e.preventDefault(); }).first().addClass('O_Nav_Current');
A lot of the times the implementation will exist in the same namespace as the interface. So, I came up with this:
public class InterfaceConverter : JsonConverter
{
public override bool CanWrite => false;
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var token = JToken.ReadFrom(reader);
var typeVariable = this.GetTypeVariable(token);
if (TypeExtensions.TryParse(typeVariable, out var implimentation))
{ }
else if (!typeof(IEnumerable).IsAssignableFrom(objectType))
{
implimentation = this.GetImplimentedType(objectType);
}
else
{
var genericArgumentTypes = objectType.GetGenericArguments();
var innerType = genericArgumentTypes.FirstOrDefault();
if (innerType == null)
{
implimentation = typeof(IEnumerable);
}
else
{
Type genericType = null;
if (token.HasAny())
{
var firstItem = token[0];
var genericTypeVariable = this.GetTypeVariable(firstItem);
TypeExtensions.TryParse(genericTypeVariable, out genericType);
}
genericType = genericType ?? this.GetImplimentedType(innerType);
implimentation = typeof(IEnumerable<>);
implimentation = implimentation.MakeGenericType(genericType);
}
}
return JsonConvert.DeserializeObject(token.ToString(), implimentation);
}
public override bool CanConvert(Type objectType)
{
return !typeof(IEnumerable).IsAssignableFrom(objectType) && objectType.IsInterface || typeof(IEnumerable).IsAssignableFrom(objectType) && objectType.GetGenericArguments().Any(t => t.IsInterface);
}
protected Type GetImplimentedType(Type interfaceType)
{
if (!interfaceType.IsInterface)
{
return interfaceType;
}
var implimentationQualifiedName = interfaceType.AssemblyQualifiedName?.Replace(interfaceType.Name, interfaceType.Name.Substring(1));
return implimentationQualifiedName == null ? interfaceType : Type.GetType(implimentationQualifiedName) ?? interfaceType;
}
protected string GetTypeVariable(JToken token)
{
if (!token.HasAny())
{
return null;
}
return token.Type != JTokenType.Object ? null : token.Value<string>("$type");
}
}
Therefore, you can include this globally like so:
public static JsonSerializerSettings StandardSerializerSettings => new JsonSerializerSettings
{
Converters = new List<JsonConverter>
{
new InterfaceConverter()
}
};
Another way to use gson:
String json_String_to_print = ...
Gson gson = new GsonBuilder().setPrettyPrinting().create();
JsonParser jp = new JsonParser();
return gson.toJson(jp.parse(json_String_to_print));
It can be used when you don't have the bean as in susemi99's post.
instead of try
ing & catch
ing expressions.. its better to run regex on the string to ensure that it is a valid number..
Open preferences windows (Command key + "," on Mac):
1.Tools
2.Python Integrated Tools
3.Default test runner
Better answer was here:
set "i=hello " world"
set i|find """" >nul && echo contains || echo not_contains
Best thing is to convert HashMap to TreeMap. TreeMap sort keys on its own. If you want to sort on values than quick fix can be you can switch values with keys if your values are not duplicates.
You can do this with two command sequences. First define an array with the name of the files you do not want to exclude:
files=( backup.tar.gz script.php database.sql info.txt )
After that, loop through all files in the directory you want to exclude, checking if the filename is in the array you don't want to exclude; if its not then delete the file.
for file in *; do
if [[ ! " ${files[@]} " ~= "$file" ]];then
rm "$file"
fi
done
var dataArray = [];
var obj = jQuery.parseJSON(yourInput);
$.each(obj, function (index, value) {
dataArray.push([value["yourID"].toString(), value["yourValue"] ]);
});
this helps me a lot :-)
You might want to use python's rpy2 module. However, the "right" way to do this is with R CMD BATCH. You can modify this to write to STDOUT, but the default is to write to a .Rout file. See example below:
[ramanujan:~]$cat foo.R
print(rnorm(10))
[ramanujan:~]$R CMD BATCH foo.R
[ramanujan:~]$cat foo.Rout
R version 2.7.2 (2008-08-25)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
[Previously saved workspace restored]
~/.Rprofile loaded.
Welcome at Fri Apr 17 13:33:17 2009
> print(rnorm(10))
[1] 1.5891276 1.1219071 -0.6110963 0.1579430 -0.3104579 1.0072677 -0.1303165 0.6998849 1.9918643 -1.2390156
>
Goodbye at Fri Apr 17 13:33:17 2009
> proc.time()
user system elapsed
0.614 0.050 0.721
Note: you'll want to try out the --vanilla and other options to remove all the startup cruft.
Differences between
isinstance()
andtype()
in Python?
Type-checking with
isinstance(obj, Base)
allows for instances of subclasses and multiple possible bases:
isinstance(obj, (Base1, Base2))
whereas type-checking with
type(obj) is Base
only supports the type referenced.
As a sidenote, is
is likely more appropriate than
type(obj) == Base
because classes are singletons.
In Python, usually you want to allow any type for your arguments, treat it as expected, and if the object doesn't behave as expected, it will raise an appropriate error. This is known as polymorphism, also known as duck-typing.
def function_of_duck(duck):
duck.quack()
duck.swim()
If the code above works, we can presume our argument is a duck. Thus we can pass in other things are actual sub-types of duck:
function_of_duck(mallard)
or that work like a duck:
function_of_duck(object_that_quacks_and_swims_like_a_duck)
and our code still works.
However, there are some cases where it is desirable to explicitly type-check. Perhaps you have sensible things to do with different object types. For example, the Pandas Dataframe object can be constructed from dicts or records. In such a case, your code needs to know what type of argument it is getting so that it can properly handle it.
So, to answer the question:
isinstance()
and type()
in Python?Allow me to demonstrate the difference:
type
Say you need to ensure a certain behavior if your function gets a certain kind of argument (a common use-case for constructors). If you check for type like this:
def foo(data):
'''accepts a dict to construct something, string support in future'''
if type(data) is not dict:
# we're only going to test for dicts for now
raise ValueError('only dicts are supported for now')
If we try to pass in a dict that is a subclass of dict
(as we should be able to, if we're expecting our code to follow the principle of Liskov Substitution, that subtypes can be substituted for types) our code breaks!:
from collections import OrderedDict
foo(OrderedDict([('foo', 'bar'), ('fizz', 'buzz')]))
raises an error!
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 3, in foo
ValueError: argument must be a dict
isinstance
But if we use isinstance
, we can support Liskov Substitution!:
def foo(a_dict):
if not isinstance(a_dict, dict):
raise ValueError('argument must be a dict')
return a_dict
foo(OrderedDict([('foo', 'bar'), ('fizz', 'buzz')]))
returns OrderedDict([('foo', 'bar'), ('fizz', 'buzz')])
In fact, we can do even better. collections
provides Abstract Base Classes that enforce minimal protocols for various types. In our case, if we only expect the Mapping
protocol, we can do the following, and our code becomes even more flexible:
from collections import Mapping
def foo(a_dict):
if not isinstance(a_dict, Mapping):
raise ValueError('argument must be a dict')
return a_dict
It should be noted that type can be used to check against multiple classes using
type(obj) in (A, B, C)
Yes, you can test for equality of types, but instead of the above, use the multiple bases for control flow, unless you are specifically only allowing those types:
isinstance(obj, (A, B, C))
The difference, again, is that isinstance
supports subclasses that can be substituted for the parent without otherwise breaking the program, a property known as Liskov substitution.
Even better, though, invert your dependencies and don't check for specific types at all.
So since we want to support substituting subclasses, in most cases, we want to avoid type-checking with type
and prefer type-checking with isinstance
- unless you really need to know the precise class of an instance.
You can also pass date format
df.withColumn("Date",to_date(unix_timestamp(df.col("your_date_column"), "your_date_format").cast("timestamp")))
For Example
import org.apache.spark.sql.functions._
val df = sc.parallelize(Seq("06 Jul 2018")).toDF("dateCol")
df.withColumn("Date",to_date(unix_timestamp(df.col("dateCol"), "dd MMM yyyy").cast("timestamp")))
I was facing the same problem while using Windows 10. I have solved the problem using the following procedure
Note: jdk1.8.0_201 and jre1.8.0_201 will be changed depending on the version of Java development kit and Java
To check the installation, open CMD\Type javac\Press Enter and Type java\press enter It will show
In RStudio run
Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jdk1.8.0_201")
Note: jdk1.8.0_201 will be changed depending on the version of Java development kit
Now you can install and load rJava package without any problem.
By all means mark this down for not-being-an-answer, but this problem of breakpoints not being hit, for me, just fixed itself. After hours of deleting temp files, rebooting, reinstalling, arsing around with debug settings to no avail, it just suddenly started working. I was on the verge of insanity when, for no reason at all, we hit a breakpoint. Love inconsistent bugs, me.
Or, if you know the width of the two "side" images and don't want to deal with floats:
<div class="container">
<div class="left-panel"><img src="myleftimage" /></div>
<div class="center-panel">Content goes here...</div>
<div class="right-panel"><img src="myrightimage" /></div>
</div>
CSS:
.container {
position:relative;
padding-left:50px;
padding-right:50px;
}
.container .left-panel {
width: 50px;
position:absolute;
left:0px;
top:0px;
}
.container .right-panel {
width: 50px;
position:absolute;
right:0px;
top:0px;
}
.container .center-panel {
background: url('mymiddleimage');
}
Notes:
Position:relative on the parent div is used to make absolutely positioned children position themselves relative to that node.
As I had the same question, but didn't find the answer here, I made some tests in order to figure out what the difference actually is. I did this, since I need the encoding for something, which is not URL/URI related.
encodeURIComponent("A")
returns "A", it does not encode "A" to "%41"decodeURIComponent("%41")
returns "A".encodeURI("A")
returns "A", it does not encode "A" to "%41"decodeURI("%41")
returns "A".-That means both can decode alphanumeric characters, even though they did not encode them. However...
encodeURIComponent("&")
returns "%26".decodeURIComponent("%26")
returns "&".encodeURI("&")
returns "&".decodeURI("%26")
returns "%26".Even though encodeURIComponent does not encode all characters, decodeURIComponent can decode any value between %00 and %7F.
Note: It appears that if you try to decode a value above %7F (unless it's a unicode value), then your script will fail with an "URI error".
For Ubuntu
Install Curl extension for PHP & restart apache server.
sudo apt-get install php5-curl
sudo service apache2 restart
For Windows
Problem arises because of not including the lib_curl.dll to PHP.
also load following extension if not working,so those extension in php.ini
or remove comment if already exist in php.ini
file then remove comment.
extension=php_bz2.dll
extension=php_curl.dll
extension=php_dba.dll
Now restart apache server. If you get an error "Unable to Load php_curl.dll", copy SSLEAY32.PHP, libEAY32.dll (OpenSSL) Libraries to the System32 folder.
In Android studio, Edit -- > Find --> Replace in path, this will check in whole project including comments and code.
Here are the changes that I had to make to the accepted answer when I did this with an image as the centre element:
#center
in this case). If it isn't, you'll have to set display
to block
, and it seems to centre relative to the space between the floated elements.Make sure to set the size of both the image and its container:
#center {
margin: 0 auto;
}
#center, #center > img {
width: 100px;
height: auto;
}
If you need "sub-10-character hash"
you could use Fletcher-32 algorithm which produces 8 character hash (32 bits), CRC-32 or Adler-32.
CRC-32 is slower than Adler32 by a factor of 20% - 100%.
Fletcher-32 is slightly more reliable than Adler-32. It has a lower computational cost than the Adler checksum: Fletcher vs Adler comparison.
A sample program with a few Fletcher implementations is given below:
#include <stdio.h>
#include <string.h>
#include <stdint.h> // for uint32_t
uint32_t fletcher32_1(const uint16_t *data, size_t len)
{
uint32_t c0, c1;
unsigned int i;
for (c0 = c1 = 0; len >= 360; len -= 360) {
for (i = 0; i < 360; ++i) {
c0 = c0 + *data++;
c1 = c1 + c0;
}
c0 = c0 % 65535;
c1 = c1 % 65535;
}
for (i = 0; i < len; ++i) {
c0 = c0 + *data++;
c1 = c1 + c0;
}
c0 = c0 % 65535;
c1 = c1 % 65535;
return (c1 << 16 | c0);
}
uint32_t fletcher32_2(const uint16_t *data, size_t l)
{
uint32_t sum1 = 0xffff, sum2 = 0xffff;
while (l) {
unsigned tlen = l > 359 ? 359 : l;
l -= tlen;
do {
sum2 += sum1 += *data++;
} while (--tlen);
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
}
/* Second reduction step to reduce sums to 16 bits */
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
return (sum2 << 16) | sum1;
}
int main()
{
char *str1 = "abcde";
char *str2 = "abcdef";
size_t len1 = (strlen(str1)+1) / 2; // '\0' will be used for padding
size_t len2 = (strlen(str2)+1) / 2; //
uint32_t f1 = fletcher32_1(str1, len1);
uint32_t f2 = fletcher32_2(str1, len1);
printf("%u %X \n", f1,f1);
printf("%u %X \n\n", f2,f2);
f1 = fletcher32_1(str2, len2);
f2 = fletcher32_2(str2, len2);
printf("%u %X \n",f1,f1);
printf("%u %X \n",f2,f2);
return 0;
}
Output:
4031760169 F04FC729
4031760169 F04FC729
1448095018 56502D2A
1448095018 56502D2A
Agrees with Test vectors:
"abcde" -> 4031760169 (0xF04FC729)
"abcdef" -> 1448095018 (0x56502D2A)
Adler-32 has a weakness for short messages with few hundred bytes, because the checksums for these messages have a poor coverage of the 32 available bits. Check this:
The Adler32 algorithm is not complex enough to compete with comparable checksums.
If you don't want to include the backslash, but only the text after it, try this: ([^\\]+)$
or for unix: ([^\/]+)$
Python lists are mutable objects and here:
plot_data = [[]] * len(positions)
you are repeating the same list len(positions)
times.
>>> plot_data = [[]] * 3
>>> plot_data
[[], [], []]
>>> plot_data[0].append(1)
>>> plot_data
[[1], [1], [1]]
>>>
Each list in your list is a reference to the same object. You modify one, you see the modification in all of them.
If you want different lists, you can do this way:
plot_data = [[] for _ in positions]
for example:
>>> pd = [[] for _ in range(3)]
>>> pd
[[], [], []]
>>> pd[0].append(1)
>>> pd
[[1], [], []]
Windows.Forms.Form
, so just a new window Page is, according to online documentation:
Encapsulates a page of content that can be navigated to and hosted by Windows Internet Explorer, NavigationWindow, and Frame.
So you basically use this if going you visualize some HTML content
UserControl is for cases when you want to create some reusable component (but not standalone one) to use it in multiple different Windows
To fix the indentation and formatting in all files of your solution:
2
);This will recursively open and save all files in your solution, setting the indentation you defined above.
You might want to check other programming languages tabs (Options...) for Code Style > Formatting as well.
You can pass multiple parameters as "?param1=value1¶m2=value2
"
But it's not secure. It's vulnerable to Cross Site Scripting (XSS) Attack
.
Your parameter can be simply replaced with a script.
Have a look at this article and article
You can make it secure by using API of StringEscapeUtils
static String escapeHtml(String str)
Escapes the characters in a String using HTML entities.
Even using https
url for security without above precautions is not a good practice.
Have a look at related SE question:
Another way to throw an exceptions is assert
. You can use assert to verify a condition is being fulfilled if not then it will raise AssertionError
. For more details have a look here.
def avg(marks):
assert len(marks) != 0,"List is empty."
return sum(marks)/len(marks)
mark2 = [55,88,78,90,79]
print("Average of mark2:",avg(mark2))
mark1 = []
print("Average of mark1:",avg(mark1))
You use an anchor and a hash. For example:
Target of the Link:
<a name="name_of_target">Content</a>
Link to the Target:
<a href="#name_of_target">Link Text</a>
Or, if linking from a different page:
<a href="http://path/to/page/#name_of_target">Link Text</a>
Strictly stated you must check all of the following: defined, not empty AND not None.
For "normal" variables it makes a difference if defined and set or not set. See foo
and bar
in the example below. Both are defined but only foo
is set.
On the other side registered variables are set to the result of the running command and vary from module to module. They are mostly json structures. You probably must check the subelement you're interested in. See xyz
and xyz.msg
in the example below:
cat > test.yml <<EOF
- hosts: 127.0.0.1
vars:
foo: "" # foo is defined and foo == '' and foo != None
bar: # bar is defined and bar != '' and bar == None
tasks:
- debug:
msg : ""
register: xyz # xyz is defined and xyz != '' and xyz != None
# xyz.msg is defined and xyz.msg == '' and xyz.msg != None
- debug:
msg: "foo is defined and foo == '' and foo != None"
when: foo is defined and foo == '' and foo != None
- debug:
msg: "bar is defined and bar != '' and bar == None"
when: bar is defined and bar != '' and bar == None
- debug:
msg: "xyz is defined and xyz != '' and xyz != None"
when: xyz is defined and xyz != '' and xyz != None
- debug:
msg: "{{ xyz }}"
- debug:
msg: "xyz.msg is defined and xyz.msg == '' and xyz.msg != None"
when: xyz.msg is defined and xyz.msg == '' and xyz.msg != None
- debug:
msg: "{{ xyz.msg }}"
EOF
ansible-playbook -v test.yml
You can launch Excel, open the workbook and run the macro from a VBScript file.
Copy the code below into Notepad.
Update the 'MyWorkbook.xls' and 'MyMacro' parameters.
Save it with a vbs extension and run it.
Option Explicit
On Error Resume Next
ExcelMacroExample
Sub ExcelMacroExample()
Dim xlApp
Dim xlBook
Set xlApp = CreateObject("Excel.Application")
Set xlBook = xlApp.Workbooks.Open("C:\MyWorkbook.xls", 0, True)
xlApp.Run "MyMacro"
xlApp.Quit
Set xlBook = Nothing
Set xlApp = Nothing
End Sub
The key line that runs the macro is:
xlApp.Run "MyMacro"
Add this style to your span:
position:relative;
top: 10px;
faster way (without pyspark.sql.functions
)
df.filter((df.d<5)&((df.col1 != df.col3) |
(df.col2 != df.col4) &
(df.col1 ==df.col3)))\
.show()
$result = mysql_query($query) or die("Data not found.");
$rows=array();
while($r=mysql_fetch_assoc($result))
{
$rows[]=$r;
}
header("Content-type:application/json");
echo json_encode($rows);
setting padding-bottom for each list using pseudo class is a viable method. Also line height can be used. Remember that font properties such as font-family, Font-weight, etc. plays a role for uneven heights.
Upgrading my scikit-learn from 0.19.1 to 0.19.2 in anaconda installed on Ubuntu on Google VM instance:
First, check existing available packages with versions by using:
conda list
It will show different packages and their installed versions in the output. Here check for scikit-learn. e.g. for me, the output was:
scikit-learn 0.19.1 py36hedc7406_0
Now I want to Upgrade to 0.19.2 July 2018 release i.e. latest available version.
conda config --append channels conda-forge
conda install scikit-learn=0.19.2
As you are trying to upgrade to 0.17 version try the following command:
conda install scikit-learn=0.17
Now check the required version of the scikit-learn is installed correctly or not by using:
conda list
For me the Output was:
scikit-learn 0.19.2 py36_blas_openblasha84fab4_201 [blas_openblas] conda-forge
I tried following commands:
!conda update conda
!pip install -U scikit-learn
It will install the required packages also will show in the conda list
but if you try to import that package it will not work.
On the website http://scikit-learn.org/stable/install.html it is mentioned as: Warning To upgrade or uninstall scikit-learn installed with Anaconda or conda you should not use the pip.
Just for fun, here's what I'd probably do in a real project, where I'm already using all my favourite libraries (in this case Guava, formerly known as Google Collections).
String text = Files.toString(new File("textfile.txt"), Charsets.UTF_8);
List<Integer> list = Lists.newArrayList();
for (String s : text.split("\\s")) {
list.add(Integer.valueOf(s));
}
Benefit: Not much own code to maintain (contrast with e.g. this). Edit: Although it is worth noting that in this case tschaible's Scanner solution doesn't have any more code!
Drawback: you obviously may not want to add new library dependencies just for this. (Then again, you'd be silly not to make use of Guava in your projects. ;-)
When Command Extensions are enabled (Windows XP and newer, roughly), you can use the syntax %~nF (where F is the variable and ~n is the request for its name) to only get the filename.
FOR /R C:\Directory %F in (*.*) do echo %~nF
should echo only the filenames.
I get a compile time error with Bob's (i.e. the questioner's) code. Stream.Length is a long whereas BinaryReader.ReadBytes takes an integer parameter. In my case, I do not expect to be dealing with Streams large enough to require long precision, so I use the following:
Stream s;
byte[] b;
if (s.Length > int.MaxValue) {
throw new Exception("This stream is larger than the conversion algorithm can currently handle.");
}
using (var br = new BinaryReader(s)) {
b = br.ReadBytes((int)s.Length);
}
As mentioned by @CommonsWare, you will want to try android sqlite asset helper. It made opening a pre-existing db a piece of cake for me.
I literally had it working in about a half hour after spending 3 hours trying to do it all manually. Funny thing is, I thought I was doing the same thing the library did for me, but something was missing!
I would do something like this:
;WITH x
AS (SELECT *,
Row_number()
OVER(
partition BY employeeid
ORDER BY datestart) rn
FROM employeehistory)
SELECT *
FROM x x1
LEFT OUTER JOIN x x2
ON x1.rn = x2.rn + 1
Or maybe it would be x2.rn - 1. You'll have to see. In any case, you get the idea. Once you have the table joined on itself, you can filter, group, sort, etc. to get what you need.
You should add dataType: "html"
to the request. Im quite sure you wont be able to search the DOM of the returned html if it doesnt know it is html.
The solution below works very well for me.
Only 4 lines and works with most (all?) characters.
:Trim
SetLocal EnableDelayedExpansion
set Params=%*
for /f "tokens=1*" %%a in ("!Params!") do EndLocal & set %1=%%b
exit /b
@echo off
call :Test1 & call :Test2 & call :Test3 & exit /b
:Trim
SetLocal EnableDelayedExpansion
set Params=%*
for /f "tokens=1*" %%a in ("!Params!") do EndLocal & set %1=%%b
exit /b
:Test1
set Value= a b c
set Expected=a b c
call :Trim Actual %Value%
if "%Expected%" == "%Actual%" (echo Test1 passed) else (echo Test1 failed)
exit /b
:Test2
SetLocal EnableDelayedExpansion
set Value= a \ / : * ? " ' < > | ` ~ @ # $ [ ] & ( ) + - _ = z
set Expected=a \ / : * ? " ' < > | ` ~ @ # $ [ ] & ( ) + - _ = z
call :Trim Actual !Value!
if !Expected! == !Actual! (echo Test2 passed) else (echo Test2 failed)
exit /b
:Test3
set /p Value="Enter string to trim: " %=%
echo Before: [%Value%]
call :Trim Value %Value%
echo After : [%Value%]
exit /b
Microsoft SQL Server Database Publishing Wizard will generate all the necessary insert statements, and optionally schema information as well if you need that:
http://www.microsoft.com/downloads/details.aspx?familyid=56E5B1C5-BF17-42E0-A410-371A838E570A
For php 5.6 on ubuntu 16.04
sudo apt-get install php5.6-intl
Do this: Step 1: Your String
String str = ";;;;;;\n" +
"Name, number, address;;;;;;\n" +
"01.01.12-16.02.12;;;;;;\n" +
";;;;;;\n" +
";;;;;;";
Step 2: Just replace all "\n" with "%n" the result looks like this
String str = ";;;;;;%n" +
"Name, number, address;;;;;;%n" +
"01.01.12-16.02.12;;;;;;%n" +
";;;;;;%n" +
";;;;;;";
Notice I've just put "%n" in place of "\n"
Step 3: Now simply call format()
str=String.format(str);
That's all you have to do.
You can create a temporary set of hidden iframes, initiate download by GET or POST inside of them, wait for downloads to start and remove iframes:
<!DOCTYPE HTML>
<html>
<body>
<button id="download">Download</button>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript">
$('#download').click(function() {
download('http://nogin.info/cv.doc','http://nogin.info/cv.doc');
});
var download = function() {
for(var i=0; i<arguments.length; i++) {
var iframe = $('<iframe style="visibility: collapse;"></iframe>');
$('body').append(iframe);
var content = iframe[0].contentDocument;
var form = '<form action="' + arguments[i] + '" method="GET"></form>';
content.write(form);
$('form', content).submit();
setTimeout((function(iframe) {
return function() {
iframe.remove();
}
})(iframe), 2000);
}
}
</script>
</body>
</html>
Or, without jQuery:
function download(...urls) {
urls.forEach(url => {
let iframe = document.createElement('iframe');
iframe.style.visibility = 'collapse';
document.body.append(iframe);
iframe.contentDocument.write(
`<form action="${url.replace(/\"/g, '"')}" method="GET"></form>`
);
iframe.contentDocument.forms[0].submit();
setTimeout(() => iframe.remove(), 2000);
});
}
For some reasons, this simple problem is blocking many developers. I struggled for many hours with this simple thing. This problem as many dimensions:
CORS
My setup for development is with a vuejs webpack application running on localhost:8081 and a spring boot application running on localhost:8080. So when trying to call rest API from the frontend, there's no way that the browser will let me receive a response from the spring backend without proper CORS settings. CORS can be used to relax the Cross Domain Script (XSS) protection that modern browsers have. As I understand this, browsers are protecting your SPA from being an attack by an XSS. Of course, some answers on StackOverflow suggested to add a chrome plugin to disable XSS protection but this really does work AND if it was, would only push the inevitable problem for later.
Backend CORS configuration
Here's how you should setup CORS in your spring boot app:
Add a CorsFilter class to add proper headers in the response to a client request. Access-Control-Allow-Origin and Access-Control-Allow-Headers are the most important thing to have for basic authentication.
public class CorsFilter implements Filter {
...
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) servletResponse;
HttpServletRequest request = (HttpServletRequest) servletRequest;
response.setHeader("Access-Control-Allow-Origin", "http://localhost:8081");
response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
**response.setHeader("Access-Control-Allow-Headers", "authorization, Content-Type");**
response.setHeader("Access-Control-Max-Age", "3600");
filterChain.doFilter(servletRequest, servletResponse);
}
...
}
Add a configuration class which extends Spring WebSecurityConfigurationAdapter. In this class you will inject your CORS filter:
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
...
@Bean
CorsFilter corsFilter() {
CorsFilter filter = new CorsFilter();
return filter;
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.addFilterBefore(corsFilter(), SessionManagementFilter.class) //adds your custom CorsFilter
.csrf()
.disable()
.authorizeRequests()
.antMatchers("/api/login")
.permitAll()
.anyRequest()
.authenticated()
.and()
.httpBasic()
.authenticationEntryPoint(authenticationEntryPoint)
.and()
.authenticationProvider(getProvider());
}
...
}
You don't have to put anything related to CORS in your controller.
Frontend
Now, in the frontend you need to create your axios query with the Authorization header:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://unpkg.com/vue"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body>
<div id="app">
<p>{{ status }}</p>
</div>
<script>
var vm = new Vue({
el: "#app",
data: {
status: ''
},
created: function () {
this.getBackendResource();
},
methods: {
getBackendResource: function () {
this.status = 'Loading...';
var vm = this;
var user = "aUserName";
var pass = "aPassword";
var url = 'http://localhost:8080/api/resource';
var authorizationBasic = window.btoa(user + ':' + pass);
var config = {
"headers": {
"Authorization": "Basic " + authorizationBasic
}
};
axios.get(url, config)
.then(function (response) {
vm.status = response.data[0];
})
.catch(function (error) {
vm.status = 'An error occured.' + error;
})
}
}
})
</script>
</body>
</html>
Hope this helps.
try this
final Spinner cardStatusSpinner1 = (Spinner) findViewById(R.id.text_interested);
String cardStatusString;
cardStatusSpinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent,
View view, int pos, long id) {
cardStatusString = parent.getItemAtPosition(pos).toString();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
final Button saveBtn = (Button) findViewById(R.id.save_button);
saveBtn .setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
System.out.println("Selected cardStatusString : " + cardStatusString ); //this will print the result
}
});
The javadoc for Object specifies that
This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.
If a class overrides hashCode, it means that it wants to generate a specific id, which will (one can hope) have the right behaviour.
You can use System.identityHashCode to get that id for any class.
You can also use jQuery - is(selector) Method:
var lastOpenSite = $(this).siblings().is(':not(.closedTab)');
Use copyOfRange method from java.util.Arrays class:
int[] newArray = Arrays.copyOfRange(oldArray, startIndex, endIndex);
For more details:
Views are acceptable when you need to ensure that complex logic is followed every time. For instance, we have a view that creates the raw data needed for all financial reporting. By having all reports use this view, everyone is working from the same data set, rather than one report using one set of joins and another forgetting to use one which gives different results.
Views are acceptable when you want to restrict users to a particular subset of data. For instance, if you do not delete records but only mark the current one as active and the older versions as inactive, you want a view to use to select only the active records. This prevents people from forgetting to put the where clause in the query and getting bad results.
Views can be used to ensure that users only have access to a set of records - for instance, a view of the tables for a particular client and no security rights on the tables can mean that the users for that client can only ever see the data for that client.
Views are very helpful when refactoring databases.
Views are not acceptable when you use views to call views which can result in horrible performance (at least in SQL Server). We almost lost a multimillion dollar client because someone chose to abstract the database that way and performance was horrendous and timeouts frequent. We had to pay for the fix too, not the client, as the performance issue was completely our fault. When views call views, they have to completely generate the underlying view. I have seen this where the view called a view which called a view and so many millions of records were generated in order to see the three the user ultimately needed. I remember one of these views took 8 minutes to do a simple count(*) of the records. Views calling views are an extremely poor idea.
Views are often a bad idea to use to update records as usually you can only update fields from the same table (again this is SQL Server, other databases may vary). If that's the case, it makes more sense to directly update the tables anyway so that you know which fields are available.
I eventually figured out there was a byte mark exception and removed it using this code:
string _byteOrderMarkUtf8 = Encoding.UTF8.GetString(Encoding.UTF8.GetPreamble());
if (xml.StartsWith(_byteOrderMarkUtf8))
{
var lastIndexOfUtf8 = _byteOrderMarkUtf8.Length-1;
xml = xml.Remove(0, lastIndexOfUtf8);
}
Follow this path.
C:\Program Files\MongoDB\Server\4.2\bin
Run the cmd in bin folder and paste the below command
mongorestore --db <name-your-database-want-to-restore-as> <path-of-dumped-database>
For Example:
mongorestore --db testDb D:\Documents\Dump\myDb
The error that you get does not seem to be related to the RequestHeader.
And you seem to be confusing Spring REST services with JAX-RS, your method signature should be something like:
@RequestMapping(produces = "application/json", method = RequestMethod.GET, value = "data")
@ResponseBody
public ResponseEntity<Data> getData(@RequestHeader(value="User-Agent") String userAgent, @RequestParam(value = "ID", defaultValue = "") String id) {
// your code goes here
}
And your REST class should have annotations like:
@Controller
@RequestMapping("/rest/")
Regarding the actual question, another way to get HTTP headers is to insert the HttpServletRequest into your method and then get the desired header from there.
Example:
@RequestMapping(produces = "application/json", method = RequestMethod.GET, value = "data")
@ResponseBody
public ResponseEntity<Data> getData(HttpServletRequest request, @RequestParam(value = "ID", defaultValue = "") String id) {
String userAgent = request.getHeader("user-agent");
}
Don't worry about the injection of the HttpServletRequest because Spring does that magic for you ;)
You should call srand() before calling rand to initialize the random number generator.
Either call it with a specific seed, and you will always get the same pseudo-random sequence
#include <stdlib.h>
int main ()
{
srand ( 123 );
int random_number = rand();
return 0;
}
or call it with a changing sources, ie the time function
#include <stdlib.h>
#include <time.h>
int main ()
{
srand ( time(NULL) );
int random_number = rand();
return 0;
}
In response to Moon's Comment rand() generates a random number with an equal probability between 0 and RAND_MAX (a macro pre-defined in stdlib.h)
You can then map this value to a smaller range, e.g.
int random_value = rand(); //between 0 and RAND_MAX
//you can mod the result
int N = 33;
int rand_capped = random_value % N; //between 0 and 32
int S = 50;
int rand_range = rand_capped + S; //between 50 and 82
//you can convert it to a float
float unit_random = random_value / (float) RAND_MAX; //between 0 and 1 (floating point)
This might be sufficient for most uses, but its worth pointing out that in the first case using the mod operator introduces a slight bias if N does not divide evenly into RAND_MAX+1.
Random number generators are interesting and complex, it is widely said that the rand() generator in the C standard library is not a great quality random number generator, read (http://en.wikipedia.org/wiki/Random_number_generation for a definition of quality).
http://en.wikipedia.org/wiki/Mersenne_twister (source http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html ) is a popular high quality random number generator.
Also, I am not aware of arc4rand() or random() so I cannot comment.
GitHub now has a feature to import from an SVN repository. I never tried it, though.
Use window.confirm()
instead of window.alert()
.
HTML:
<input type="submit" onclick="return clicked();" value="Button" />
JavaScript:
function clicked() {
return confirm('clicked');
}
If fptr
is NULL
, then you don't have an open file. Therefore, you can't freopen
it, you should just fopen
it.
FILE *fptr;
fptr = fopen("scores.dat", "rb+");
if(fptr == NULL) //if file does not exist, create it
{
fptr = fopen("scores.dat", "wb");
}
note: Since the behavior of your program varies depending on whether the file is opened in read or write modes, you most probably also need to keep a variable indicating which is the case.
int main()
{
FILE *fptr;
char there_was_error = 0;
char opened_in_read = 1;
fptr = fopen("scores.dat", "rb+");
if(fptr == NULL) //if file does not exist, create it
{
opened_in_read = 0;
fptr = fopen("scores.dat", "wb");
if (fptr == NULL)
there_was_error = 1;
}
if (there_was_error)
{
printf("Disc full or no permission\n");
return EXIT_FAILURE;
}
if (opened_in_read)
printf("The file is opened in read mode."
" Let's read some cached data\n");
else
printf("The file is opened in write mode."
" Let's do some processing and cache the results\n");
return EXIT_SUCCESS;
}
A List
isn't a real thing in Java. It's an interface, a way of defining how an object is allowed to interact with other objects. As such, it can't ever be instantiated. An ArrayList
is an implementation of the List
interface, as is a linked list, and so on. Use those instead.
If the variable holding the dataframe is called df, then:
len(df.columns)
gives the number of columns.
And for those who want the number of rows:
len(df.index)
For a tuple containing the number of both rows and columns:
df.shape
Technically, the Integrity attribute helps with just that - it enables the proper verification of the data source. That is, it merely allows the browser to verify the numbers in the right source file with the amounts requested by the source file located on the CDN server.
Going a bit deeper, in case of the established encrypted hash value of this source and its checked compliance with a predefined value in the browser - the code executes, and the user request is successfully processed.
Crossorigin attribute helps developers optimize the rates of CDN performance, at the same time, protecting the website code from malicious scripts.
In particular, Crossorigin downloads the program code of the site in anonymous mode, without downloading cookies or performing the authentication procedure. This way, it prevents the leak of user data when you first load the site on a specific CDN server, which network fraudsters can easily replace addresses.
Source: https://yon.fun/what-is-link-integrity-and-crossorigin/
When I get this kind of error I had to update the data type by a notch. For Example, if I have it as "tiny int" change it to "small int" ~ Nita
Generic solution extracting the first "n" words of refcell string into a new string of "x" number of characters
=LEFT(SUBSTITUTE(***refcell***&" "," ",REPT(" ",***x***),***n***),***x***)
Assuming A1 has text string to extract, the 1st word extracted to a 15 character result
=LEFT(SUBSTITUTE(A1&" "," ",REPT(" ",15),1),15)
This would result in "Toronto" being returned to a 15 character string. 1st 2 words extracted to a 30 character result
=LEFT(SUBSTITUTE(A1&" "," ",REPT(" ",30),2),30)
would result in "Toronto is" being returned to a 30 character string
(something else)
should be a.Country
if Country
is nullable then make(something else)
be a.Country OR a.Country is NULL
It's very simple. Just copy your image and paste it in the drawable folder. One more thing. When you paste an image in the drawable folder, a popup window will appear asking for a folder name. Add xxhdpi,xhdpi,hdpi or mdpi according to your image, like in the image below:
If you are still having problems, check out this link: Drawable folder in android studio
Try:
next(g)
Check out this neat table that shows the differences in syntax between 2 and 3 when it comes to this.
upper-case(string) and lower-case(string)
That information is stored in the ALL_TAB_COLUMNS
system table:
SQL> select column_name from all_tab_columns where table_name = 'DUAL';
DUMMY
Or you could DESCRIBE
the table if you are using SQL*PLUS:
SQL> desc dual
Name Null? Type
----------------------------------------------------- -------- ---------------------- -------------
DUMMY VARCHAR2(1)
Here's the beginnings of a parser class to get you started. This ended up being my solution to a similar problem:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;
namespace XML
{
public class Parser
{
private string _FilePath = string.Empty;
private XDocument _XML_Doc = null;
public Parser(string filePath)
{
_FilePath = filePath;
_XML_Doc = XDocument.Load(_FilePath);
}
/// <summary>
/// Replaces values of all attributes of a given name (attributeName) with the specified new value (newValue) in all elements.
/// </summary>
/// <param name="attributeName"></param>
/// <param name="newValue"></param>
public void ReplaceAtrribute(string attributeName, string newValue)
{
ReplaceAtrribute(string.Empty, attributeName, new List<string> { }, newValue);
}
/// <summary>
/// Replaces values of all attributes of a given name (attributeName) with the specified new value (newValue) in elements with a given name (elementName).
/// </summary>
/// <param name="elementName"></param>
/// <param name="attributeName"></param>
/// <param name="newValue"></param>
public void ReplaceAtrribute(string elementName, string attributeName, string newValue)
{
ReplaceAtrribute(elementName, attributeName, new List<string> { }, newValue);
}
/// <summary>
/// Replaces values of all attributes of a given name (attributeName) and value (oldValue)
/// with the specified new value (newValue) in elements with a given name (elementName).
/// </summary>
/// <param name="elementName"></param>
/// <param name="attributeName"></param>
/// <param name="oldValue"></param>
/// <param name="newValue"></param>
public void ReplaceAtrribute(string elementName, string attributeName, string oldValue, string newValue)
{
ReplaceAtrribute(elementName, attributeName, new List<string> { oldValue }, newValue);
}
/// <summary>
/// Replaces values of all attributes of a given name (attributeName), which has one of a list of values (oldValues),
/// with the specified new value (newValue) in elements with a given name (elementName).
/// If oldValues is empty then oldValues will be ignored.
/// </summary>
/// <param name="elementName"></param>
/// <param name="attributeName"></param>
/// <param name="oldValues"></param>
/// <param name="newValue"></param>
public void ReplaceAtrribute(string elementName, string attributeName, List<string> oldValues, string newValue)
{
List<XElement> elements = _XML_Doc.Elements().Descendants().ToList();
foreach (XElement element in elements)
{
if (elementName == string.Empty | element.Name.LocalName.ToString() == elementName)
{
if (element.Attribute(attributeName) != null)
{
if (oldValues.Count == 0 || oldValues.Contains(element.Attribute(attributeName).Value))
{ element.Attribute(attributeName).Value = newValue; }
}
}
}
}
public void SaveChangesToFile()
{
_XML_Doc.Save(_FilePath);
}
}
}
To achieve what you are looking for you can use the viewport-percentage length vw
.
Here is a quick example I made on jsfiddle.
HTML:
<div class="square">
<h1>This is a Square</h1>
</div>
CSS:
.square {
background: #000;
width: 50vw;
height: 50vw;
}
.square h1 {
color: #fff;
}
I am sure there are many other ways to do this but this way seemed the best to me.
Here's a more concise answer for people that are looking for a quick reference as well as some examples using promises and async/await.
Start with the naive approach (that doesn't work) for a function that calls an asynchronous method (in this case setTimeout
) and returns a message:
function getMessage() {
var outerScopeVar;
setTimeout(function() {
outerScopeVar = 'Hello asynchronous world!';
}, 0);
return outerScopeVar;
}
console.log(getMessage());
undefined
gets logged in this case because getMessage
returns before the setTimeout
callback is called and updates outerScopeVar
.
The two main ways to solve it are using callbacks and promises:
Callbacks
The change here is that getMessage
accepts a callback
parameter that will be called to deliver the results back to the calling code once available.
function getMessage(callback) {
setTimeout(function() {
callback('Hello asynchronous world!');
}, 0);
}
getMessage(function(message) {
console.log(message);
});
Promises provide an alternative which is more flexible than callbacks because they can be naturally combined to coordinate multiple async operations. A Promises/A+ standard implementation is natively provided in node.js (0.12+) and many current browsers, but is also implemented in libraries like Bluebird and Q.
function getMessage() {
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve('Hello asynchronous world!');
}, 0);
});
}
getMessage().then(function(message) {
console.log(message);
});
jQuery Deferreds
jQuery provides functionality that's similar to promises with its Deferreds.
function getMessage() {
var deferred = $.Deferred();
setTimeout(function() {
deferred.resolve('Hello asynchronous world!');
}, 0);
return deferred.promise();
}
getMessage().done(function(message) {
console.log(message);
});
async/await
If your JavaScript environment includes support for async
and await
(like Node.js 7.6+), then you can use promises synchronously within async
functions:
function getMessage () {
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve('Hello asynchronous world!');
}, 0);
});
}
async function main() {
let message = await getMessage();
console.log(message);
}
main();
The answer is You can't. Java (in your case JSP) is a server-side scripting language, which means that it is compiled and executed before all javascript code. You can assign javascript variables to JSP variables but not the other way around. If possible, you can have the variable appear in a QueryString or pass it via a form (through a hidden field), post it and extract the variable through JSP that way. But this would require resubmitting the page.
Hope this helps.
There are a few things you need to do to create a multiple file upload, its pretty basic actually. You don't need to use Java, Ajax, Flash. Just build a normal file upload form starting off with:
<form enctype="multipart/form-data" action="post_upload.php" method="POST">
Then the key to success;
<input type="file" name="file[]" multiple />
do NOT forget those brackets! In the post_upload.php try the following:
<?php print_r($_FILES['file']['tmp_name']); ?>
Notice you get an array with tmp_name data, which will mean you can access each file with an third pair of brackets with the file 'number' example:
$_FILES['file']['tmp_name'][0]
You can use php count() to count the number of files that was selected. Goodluck widdit!
A clustered index is like the contents of a phone book. You can open the book at 'Hilditch, David' and find all the information for all of the 'Hilditch's right next to each other. Here the keys for the clustered index are (lastname, firstname).
This makes clustered indexes great for retrieving lots of data based on range based queries since all the data is located next to each other.
Since the clustered index is actually related to how the data is stored, there is only one of them possible per table (although you can cheat to simulate multiple clustered indexes).
A non-clustered index is different in that you can have many of them and they then point at the data in the clustered index. You could have e.g. a non-clustered index at the back of a phone book which is keyed on (town, address)
Imagine if you had to search through the phone book for all the people who live in 'London' - with only the clustered index you would have to search every single item in the phone book since the key on the clustered index is on (lastname, firstname) and as a result the people living in London are scattered randomly throughout the index.
If you have a non-clustered index on (town) then these queries can be performed much more quickly.
Hope that helps!
strtotime()
, as in date("F j, Y", strtotime("yesterday"));
I achieved this a slightly different way. I just remove the old dropped file any time a new file is added. It acts as overwriting the file which was the user experience I was going for here.
Dropzone.options.myAwesomeDropzone = {
accept: function(file, done) {
console.log("uploaded");
done();
},
init: function() {
this.on("addedfile", function() {
if (this.files[1]!=null){
this.removeFile(this.files[0]);
}
});
}
};
To take an export to your local system from sql developer.
Path : C:\Source_Table_Extract\des_loan_due_dtls_src_boaf.csv
SPOOL "Path where you want to save the file"
SELECT /*csv*/ * FROM TABLE_NAME;
I would like to just comment, but my reputation is still lacking. So i'm adding another solution which solves the problem as well. I would really like to refute the statement made by @bmoeskau that solving this problem requires a 'hacky at best' solution, and since this came up recently in a discussion even though this post is 2 years old, i'd like to add my own two cents:
As @btford has pointed out, you seem to be trying to turn a recursive structure into a list, so you should flatten that structure into a list first. His solution does that, but there is an opinion that calling the function inside the template is inelegant. if that is true (honestly, i dont know) wouldnt that just require executing the function in the controller rather than the directive?
either way, your html requires a list, so the scope that renders it should have that list to work with. you simply have to flatten the structure inside your controller. once you have a $scope.rows array, you can generate the table with a single, simple ng-repeat. No hacking, no inelegance, simply the way it was designed to work.
Angulars directives aren't lacking functionality. They simply force you to write valid html. A colleague of mine had a similar issue, citing @bmoeskau in support of criticism over angulars templating/rendering features. When looking at the exact problem, it turned out he simply wanted to generate an open-tag, then a close tag somewhere else, etc.. just like in the good old days when we would concat our html from strings.. right? no.
as for flattening the structure into a list, here's another solution:
// assume the following structure
var structure = [
{
name: 'item1', subitems: [
{
name: 'item2', subitems: [
],
}
],
}
];
var flattened = structure.reduce((function(prop,resultprop){
var f = function(p,c,i,a){
p.push(c[resultprop]);
if (c[prop] && c[prop].length > 0 )
p = c[prop].reduce(f,p);
return p;
}
return f;
})('subitems','name'),[]);
// flattened now is a list: ['item1', 'item2']
this will work for any tree-like structure that has sub items. If you want the whole item instead of a property, you can shorten the flattening function even more.
hope that helps.
Just a variation on the answers above.
I tried the straight up node command above without success, but the suggestion from this Angular CLI issue worked for me - you create a Node script in your package.json
file to increase the memory available to Node when you run your production build.
So if you want to increase the memory available to Node to 4gb (max-old-space-size=4096
), your Node command would be node --max-old-space-size=4096 ./node_modules/@angular/cli/bin/ng build --prod
. (increase or decrease the amount of memory depending on your needs as well - 4gb worked for me, but you may need more or less). You would then add it to your package.json 'scripts' section like this:
"prod": "node --max-old-space-size=4096 ./node_modules/@angular/cli/bin/ng build --prod"
It would be contained in the scripts object along with the other scripts available - e.g.:
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"prod": "node --max-old-space-size=4096./node_modules/@angular/cli/bin/ng build --prod"
}
And you run it by calling npm run prod
(you may need to run sudo npm run prod
if you're on a Mac or Linux).
Note there may be an underlying issue which is causing Node to need more memory - this doesn't address that if that's the case - but it at least gives Node the memory it needs to perform the build.
I had a similar problem.
I would also look at this answer: Is there a high resolution (microsecond, nanosecond) DateTime object available for the CLR?.
About half-way down is an answer by "Robert P" with some extension functions I found useful.
This worked for me:
text=" trim my edges "
trimmed=$text
trimmed=${trimmed##+( )} #Remove longest matching series of spaces from the front
trimmed=${trimmed%%+( )} #Remove longest matching series of spaces from the back
echo "<$trimmed>" #Adding angle braces just to make it easier to confirm that all spaces are removed
#Result
<trim my edges>
To put that on fewer lines for the same result:
text=" trim my edges "
trimmed=${${text##+( )}%%+( )}