Solving sslv3 alert handshake failure when trying to use a client certificate
Not a definite answer but too much to fit in comments:
I hypothesize they gave you a cert that either has a wrong issuer (although their server could use a more specific alert code for that) or a wrong subject. We know the cert matches your privatekey -- because both curl and openssl client paired them without complaining about a mismatch; but we don't actually know it matches their desired CA(s) -- because your curl uses openssl and openssl SSL client does NOT enforce that a configured client cert matches certreq.CAs.
Do openssl x509 <clientcert.pem -noout -subject -issuer and the same on the cert from the test P12 that works. Do openssl s_client (or check the one you did) and look under Acceptable client certificate CA names; the name there or one of them should match (exactly!) the issuer(s) of your certs. If not, that's most likely your problem and you need to check with them you submitted your CSR to the correct place and in the correct way. Perhaps they have different regimes in different regions, or business lines, or test vs prod, or active vs pending, etc.
If the issuer of your cert does match desiredCAs, compare its subject to the working (test-P12) one: are they in similar format? are there any components in the working one not present in yours? If they allow it, try generating and submitting a new CSR with a subject name exactly the same as the test-P12 one, or as close as you can get, and see if that produces a cert that works better. (You don't have to generate a new key to do this, but if you choose to, keep track of which certs match which keys so you don't get them mixed up.) If that doesn't help look at the certificate extensions with openssl x509 <cert -noout -text for any difference(s) that might reasonably be related to subject authorization, like KeyUsage, ExtendedKeyUsage, maybe Policy, maybe Constraints, maybe even something nonstandard.
If all else fails, ask the server operator(s) what their logs say about the problem, or if you have access look at the logs yourself.
ReactJS call parent method
To do this you pass a callback as a property down to the child from the parent.
For example:
var Parent = React.createClass({
getInitialState: function() {
return {
value: 'foo'
}
},
changeHandler: function(value) {
this.setState({
value: value
});
},
render: function() {
return (
<div>
<Child value={this.state.value} onChange={this.changeHandler} />
<span>{this.state.value}</span>
</div>
);
}
});
var Child = React.createClass({
propTypes: {
value: React.PropTypes.string,
onChange: React.PropTypes.func
},
getDefaultProps: function() {
return {
value: ''
};
},
changeHandler: function(e) {
if (typeof this.props.onChange === 'function') {
this.props.onChange(e.target.value);
}
},
render: function() {
return (
<input type="text" value={this.props.value} onChange={this.changeHandler} />
);
}
});
In the above example, Parent calls Child with a property of value and onChange. The Child in return binds an onChange handler to a standard <input /> element and passes the value up to the Parent's callback if it's defined.
As a result the Parent's changeHandler method is called with the first argument being the string value from the <input /> field in the Child. The result is that the Parent's state can be updated with that value, causing the parent's <span /> element to update with the new value as you type it in the Child's input field.
How can I get the last 7 characters of a PHP string?
for last 7 characters
$newstring = substr($dynamicstring, -7);
$newstring : 5409els
for first 7 characters
$newstring = substr($dynamicstring, 0, 7);
$newstring : 2490slk
Occurrences of substring in a string
Increment lastIndex whenever you look for next occurrence.
Otherwise it's always finding the first substring (at position 0).
How to merge every two lines into one from the command line?
You can use awk like this to combine ever 2 pair of lines:
awk '{ if (NR%2 != 0) line=$0; else {printf("%s %s\n", line, $0); line="";} } \
END {if (length(line)) print line;}' flle
How to pad zeroes to a string?
Its ok too:
h = 2
m = 7
s = 3
print("%02d:%02d:%02d" % (h, m, s))
so output will be: "02:07:03"
Read/Write String from/to a File in Android
Kotlin
class FileReadWriteService {
private var context:Context? = ContextHolder.instance.appContext
fun writeFileOnInternalStorage(fileKey: String, sBody: String) {
val file = File(context?.filesDir, "files")
try {
if (!file.exists()) {
file.mkdir()
}
val fileToWrite = File(file, fileKey)
val writer = FileWriter(fileToWrite)
writer.append(sBody)
writer.flush()
writer.close()
} catch (e: Exception) {
Logger.e(classTag, e)
}
}
fun readFileOnInternalStorage(fileKey: String): String {
val file = File(context?.filesDir, "files")
var ret = ""
try {
if (!file.exists()) {
return ret
}
val fileToRead = File(file, fileKey)
val reader = FileReader(fileToRead)
ret = reader.readText()
reader.close()
} catch (e: Exception) {
Logger.e(classTag, e)
}
return ret
}
}
Android get image from gallery into ImageView
Simple pass Intent first:
Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
And you will get picture path on your onActivityResult:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
for full source code here
Joining two table entities in Spring Data JPA
@Query("SELECT rd FROM ReleaseDateType rd, CacheMedia cm WHERE ...")
How to include layout inside layout?
Learn More Using this link https://developer.android.com/training/improving-layouts/reusing-layouts.html
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Game_logic">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:id="@+id/text1"
android:textStyle="bold"
tools:text="Player " />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginLeft="20dp"
android:id="@+id/text2"
tools:text="Player 2" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Blockquote
Above layout you can used in other activity using
<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".SinglePlayer"> <include layout="@layout/activity_game_logic"/> </androidx.constraintlayout.widget.ConstraintLayout>
Keeping ASP.NET Session Open / Alive
[Late to the party...]
Another way to do this without the overhead of an Ajax call or WebService handler is to load a special ASPX page after a given amount of time (i.e., prior to the session state time-out, which is typically 20 minutes):
// Client-side JavaScript
function pingServer() {
// Force the loading of a keep-alive ASPX page
var img = new Image(1, 1);
img.src = '/KeepAlive.aspx';
}
The KeepAlive.aspx page is simply an empty page which does nothing but touch/refresh the Session state:
// KeepAlive.aspx.cs
public partial class KeepSessionAlive: System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
// Refresh the current user session
Session["refreshTime"] = DateTime.UtcNow;
}
}
This works by creating an img (image) element and forcing the browser to load its contents from the KeepAlive.aspx page. Loading that page causes the server to touch (update) the Session object, extending the session's expiration sliding time window (typically by another 20 minutes). The actual web page contents are discarded by the browser.
An alternative, and perhaps cleaner, way to do this is to create a new iframe element and load the KeepAlive.aspx page into it. The iframe element is hidden, such as by making it a child element of a hidden div element somewhere on the page.
Activity on the page itself can be detected by intercepting mouse and keyboard actions for the entire page body:
// Called when activity is detected
function activityDetected(evt) {
...
}
// Watch for mouse or keyboard activity
function watchForActivity() {
var opts = { passive: true };
document.body.addEventListener('mousemove', activityDetected, opts);
document.body.addEventListener('keydown', activityDetected, opts);
}
I cannot take credit for this idea; see: https://www.codeproject.com/Articles/227382/Alert-Session-Time-out-in-ASP-Net.
How can I add a Google search box to my website?
Sorry for replying on an older question, but I would like to clarify the last question.
You use a "get" method for your form. When the name of your input-field is "g", it will make a URL like this:
https://www.google.com/search?g=[value from input-field]
But when you search with google, you notice the following URL:
https://www.google.nl/search?q=google+search+bar
Google uses the "q" Querystring variable as it's search-query. Therefor, renaming your field from "g" to "q" solved the problem.
Styling twitter bootstrap buttons
In order to completely override the bootstrap button styles, you need to override a list of properties. See the below example.
.btn-primary, .btn-primary:hover, .btn-primary:focus, .btn-primary.focus,
.btn-primary:active, .btn-primary.active, .btn-primary:visited,
.btn-primary:active:hover, .btn-primary.active:hover{
background-color: #F19425;
color:#fff;
border: none;
outline: none;
}
If you don't use all the listed styles then you will see the default styles at performing actions on button. For example once you click the button and remove mouse pointer from button, you will see the default color visible. Or keep the button pressed you will see default colors. So, I have listed all the pseudo-styles that are to be overridden.
How to call a method with a separate thread in Java?
Sometime ago, I had written a simple utility class that uses JDK5 executor service and executes specific processes in the background. Since doWork() typically would have a void return value, you may want to use this utility class to execute it in the background.
See this article where I had documented this utility.
syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING
Might be a pasting problem, but as far as I can see from your code, you're missing the single quotes around the HTML part you're echo-ing.
If not, could you post the code correctly and tell us what line is causing the error?
Python - Move and overwrite files and folders
This will go through the source directory, create any directories that do not already exist in destination directory, and move files from source to the destination directory:
import os
import shutil
root_src_dir = 'Src Directory\\'
root_dst_dir = 'Dst Directory\\'
for src_dir, dirs, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src_dir, root_dst_dir, 1)
if not os.path.exists(dst_dir):
os.makedirs(dst_dir)
for file_ in files:
src_file = os.path.join(src_dir, file_)
dst_file = os.path.join(dst_dir, file_)
if os.path.exists(dst_file):
# in case of the src and dst are the same file
if os.path.samefile(src_file, dst_file):
continue
os.remove(dst_file)
shutil.move(src_file, dst_dir)
Any pre-existing files will be removed first (via os.remove) before being replace by the corresponding source file. Any files or directories that already exist in the destination but not in the source will remain untouched.
Outlets cannot be connected to repeating content iOS
As most people have pointed out that subclassing UITableViewCell solves this issue.
But the reason this not allowed because the prototype cell(UITableViewCell) is defined by Apple and you cannot add any of your own outlets to it.
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
//If the table has tbody and thead, make them the relative container in which we can fix td and th as absolute
table tbody {
position: relative;
}
table thead {
position: relative;
}
//Make both the first header and first data cells (First column) absolute so that it sticks to the left
table td:first-of-type {
position: absolute;
}
table th:first-of-type {
position: absolute;
}
//Move Second column according to the width of column 1
table td:nth-of-type(2) {
padding-left: <Width of column 1>;
}
table th:nth-of-type(2) {
padding-left: <Width of column 1>;
}
Returning JSON from a PHP Script
<?php
$data = /** whatever you're serializing **/;
header("Content-type: application/json; charset=utf-8");
echo json_encode($data);
?>
Run on server option not appearing in Eclipse
I was facing similar issue when i created a new workspace in STS. Project => right click => Maven option was also missing. I tried this below steps and it worked.. hope it helps someone else. Project => right click => configure => convert to maven project and then the option to run on server appeared.
Composer Update Laravel
You can use :
composer self-update --2
To update to 2.0.8 version (Latest stable version)
What does "zend_mm_heap corrupted" mean
I was getting this same error under PHP 5.5 and increasing the output buffering didn't help. I wasn't running APC either so that wasn't the issue. I finally tracked it down to opcache, I simply had to disable it from the cli. There was a specific setting for this:
opcache.enable_cli=0
Once switched the zend_mm_heap corrupted error went away.
How to get the selected item from ListView?
Using setOnItemClickListener is the correct answer, but if you have a keyboard you can change selection even with arrows (no click is performed), so, you need to implement also setOnItemSelectedListener :
myListView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) {
MyObject tmp=(MyObject) adapterView.getItemAtPosition(position);
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
// your stuff
}
});
Bizarre Error in Chrome Developer Console - Failed to load resource: net::ERR_CACHE_MISS
Per the developers, this error is not an actual failure, but rather "misleading error reports". This bug is fixed in version 40, which is available on the canary and dev channels as of 25 Oct.
The requested resource does not support HTTP method 'GET'
In my case, the route signature was different from the method parameter. I had id, but I was accepting documentId as parameter, that caused the problem.
[Route("Documents/{id}")] <--- caused the webapi error
[Route("Documents/{documentId}")] <-- solved
public Document Get(string documentId)
{
..
}
Is it possible to have a default parameter for a mysql stored procedure?
It's still not possible.
How to configure slf4j-simple
It's either through system property
-Dorg.slf4j.simpleLogger.defaultLogLevel=debug
or simplelogger.properties file on the classpath
see http://www.slf4j.org/api/org/slf4j/impl/SimpleLogger.html for details
Clear and reset form input fields
Why not use HTML-controlled items such as <input type="reset">
bootstrap button shows blue outline when clicked
a:focus {
outline: none;
}
this works for me on BS3
Get ASCII value at input word
char ch='A';
System.out.println((int)ch);
Smooth scroll to div id jQuery
Here's what I use:
<!-- jquery smooth scroll to id's -->
<script>
$(function() {
$('a[href*=#]:not([href=#])').click(function() {
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
var target = $(this.hash);
target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
if (target.length) {
$('html,body').animate({
scrollTop: target.offset().top
}, 500);
return false;
}
}
});
});
</script>
The beauty with this one is you can use an unlimited number of hash-links and corresponding ids without having to execute a new script for each.
If you’re using WordPress, insert the code in your theme’s footer.php file right before the closing body tag </body>.
If you have no access to the theme files, you can embed the code right inside the post/page editor (you must be editing the post in Text mode) or on a Text widget that will load up on all pages.
If you’re using any other CMS or just HTML, you can insert the code in a section that loads up on all pages right before the closing body tag </body>.
If you need more details on this, check out my quick post here: jQuery smooth scroll to id
Hope that helps, and let me know if you have questions about it.
Simple PHP calculator
You need to assign $first and $second
$first = $_POST['first'];
$second= $_POST['second'];
Also, As Travesty3 said, you need to do your arithmetic outside of the quotes:
echo $first + $second;
Count Vowels in String Python
count = 0
s = "azcbobobEgghakl"
s = s.lower()
for i in range(0, len(s)):
if s[i] == 'a'or s[i] == 'e'or s[i] == 'i'or s[i] == 'o'or s[i] == 'u':
count += 1
print("Number of vowels: "+str(count))
Specifying an Index (Non-Unique Key) Using JPA
This solution is for EclipseLink 2.5, and it works (tested):
@Table(indexes = {@Index(columnList="mycol1"), @Index(columnList="mycol2")})
@Entity
public class myclass implements Serializable{
private String mycol1;
private String mycol2;
}
This assumes ascendant order.
How to persist data in a dockerized postgres database using volumes
I think you just need to create your volume outside docker first with a docker create -v /location --name and then reuse it.
And by the time I used to use docker a lot, it wasn't possible to use a static docker volume with dockerfile definition so my suggestion is to try the command line (eventually with a script ) .
How to delete specific columns with VBA?
You were just missing the second half of the column statement telling it to remove the entire column, since most normal Ranges start with a Column Letter, it was looking for a number and didn't get one. The ":" gets the whole column, or row.
I think what you were looking for in your Range was this:
Range("C:C,F:F,I:I,L:L,O:O,R:R").Delete
Just change the column letters to match your needs.
how to use getSharedPreferences in android
First get the instance of SharedPreferences using
SharedPreferences userDetails = context.getSharedPreferences("userdetails", MODE_PRIVATE);
Now to save the values in the SharedPreferences
Editor edit = userDetails.edit();
edit.putString("username", username.getText().toString().trim());
edit.putString("password", password.getText().toString().trim());
edit.apply();
Above lines will write username and password to preference
Now to to retrieve saved values from preference, you can follow below lines of code
String userName = userDetails.getString("username", "");
String password = userDetails.getString("password", "");
(NOTE: SAVING PASSWORD IN THE APP IS NOT RECOMMENDED. YOU SHOULD EITHER ENCRYPT THE PASSWORD BEFORE SAVING OR SKIP THE SAVING THE PASSWORD)
Oracle: Call stored procedure inside the package
To those that are incline to use GUI:
Click Right mouse button on procecdure name then select Test
Then in new window you will see script generated just add the parameters and click on Start Debugger or F9
Hope this saves you some time.
Magento: get a static block as html in a phtml file
In the layout (app/design/frontend/your_theme/layout/default.xml):
<default>
<cms_page> <!-- need to be redefined for your needs -->
<reference name="content">
<block type="cms/block" name="cms_newest_product" as="cms_newest_product">
<action method="setBlockId"><block_id>newest_product</block_id></action>
</block>
</reference>
</cms_page>
</default>
In your phtml template:
<?php echo $this->getChildHtml('newest_product'); ?>
Don't forget about cache cleaning.
I think it help.
Create a custom View by inflating a layout?
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView();
}
public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context) {
super(context);
initView();
}
private void initView() {
inflate(getContext(), R.layout.my_view_layout, this);
}
}
Read input from console in Ruby?
There are many ways to take input from the users. I personally like using the method gets. When you use gets, it gets the string that you typed, and that includes the ENTER key that you pressed to end your input.
name = gets
"mukesh\n"
You can see this in irb; type this and you will see the \n, which is the “newline” character that the ENTER key produces: Type
name = getsyou will see somethings like"mukesh\n"You can get rid of pesky newline character using chomp method.
The chomp method gives you back the string, but without the terminating newline. Beautiful chomp method life saviour.
name = gets.chomp
"mukesh"
You can also use terminal to read the input. ARGV is a constant defined in the Object class. It is an instance of the Array class and has access to all the array methods. Since it’s an array, even though it’s a constant, its elements can be modified and cleared with no trouble. By default, Ruby captures all the command line arguments passed to a Ruby program (split by spaces) when the command-line binary is invoked and stores them as strings in the ARGV array.
When written inside your Ruby program, ARGV will take take a command line command that looks like this:
test.rb hi my name is mukesh
and create an array that looks like this:
["hi", "my", "name", "is", "mukesh"]
But, if I want to passed limited input then we can use something like this.
test.rb 12 23
and use those input like this in your program:
a = ARGV[0]
b = ARGV[1]
What is the difference between localStorage, sessionStorage, session and cookies?
Local storage: It keeps store the user information data without expiration date this data will not be deleted when user closed the browser windows it will be available for day, week, month and year.
In Local storage can store 5-10mb offline data.
//Set the value in a local storage object
localStorage.setItem('name', myName);
//Get the value from storage object
localStorage.getItem('name');
//Delete the value from local storage object
localStorage.removeItem(name);//Delete specifice obeject from local storege
localStorage.clear();//Delete all from local storege
Session Storage: It is same like local storage date except it will delete all windows when browser windows closed by a web user.
In Session storage can store upto 5 mb data
//set the value to a object in session storege
sessionStorage.myNameInSession = "Krishna";
Session: A session is a global variable stored on the server. Each session is assigned a unique id which is used to retrieve stored values.
Cookies: Cookies are data, stored in small text files as name-value pairs, on your computer. Once a cookie has been set, all page requests that follow return the cookie name and value.
Returning multiple values from a C++ function
Personally, I generally dislike return parameters for a number of reasons:
- it is not always obvious in the invocation which parameters are ins and which are outs
- you generally have to create a local variable to catch the result, while return values can be used inline (which may or may not be a good idea, but at least you have the option)
- it seems cleaner to me to have an "in door" and an "out door" to a function -- all the inputs go in here, all the outputs come out there
- I like to keep my argument lists as short as possible
I also have some reservations about the pair/tuple technique. Mainly, there is often no natural order to the return values. How is the reader of the code to know whether result.first is the quotient or the remainder? And the implementer could change the order, which would break existing code. This is especially insidious if the values are the same type so that no compiler error or warning would be generated. Actually, these arguments apply to return parameters as well.
Here's another code example, this one a bit less trivial:
pair<double,double> calculateResultingVelocity(double windSpeed, double windAzimuth,
double planeAirspeed, double planeCourse);
pair<double,double> result = calculateResultingVelocity(25, 320, 280, 90);
cout << result.first << endl;
cout << result.second << endl;
Does this print groundspeed and course, or course and groundspeed? It's not obvious.
Compare to this:
struct Velocity {
double speed;
double azimuth;
};
Velocity calculateResultingVelocity(double windSpeed, double windAzimuth,
double planeAirspeed, double planeCourse);
Velocity result = calculateResultingVelocity(25, 320, 280, 90);
cout << result.speed << endl;
cout << result.azimuth << endl;
I think this is clearer.
So I think my first choice in general is the struct technique. The pair/tuple idea is likely a great solution in certain cases. I'd like to avoid the return parameters when possible.
Saving response from Requests to file
As Peter already pointed out:
In [1]: import requests
In [2]: r = requests.get('https://api.github.com/events')
In [3]: type(r)
Out[3]: requests.models.Response
In [4]: type(r.content)
Out[4]: str
You may also want to check r.text.
Also: https://2.python-requests.org/en/latest/user/quickstart/
Why does git perform fast-forward merges by default?
Let me expand a bit on a VonC's very comprehensive answer:
First, if I remember it correctly, the fact that Git by default doesn't create merge commits in the fast-forward case has come from considering single-branch "equal repositories", where mutual pull is used to sync those two repositories (a workflow you can find as first example in most user's documentation, including "The Git User's Manual" and "Version Control by Example"). In this case you don't use pull to merge fully realized branch, you use it to keep up with other work. You don't want to have ephemeral and unimportant fact when you happen to do a sync saved and stored in repository, saved for the future.
Note that usefulness of feature branches and of having multiple branches in single repository came only later, with more widespread usage of VCS with good merging support, and with trying various merge-based workflows. That is why for example Mercurial originally supported only one branch per repository (plus anonymous tips for tracking remote branches), as seen in older revisions of "Mercurial: The Definitive Guide".
Second, when following best practices of using feature branches, namely that feature branches should all start from stable version (usually from last release), to be able to cherry-pick and select which features to include by selecting which feature branches to merge, you are usually not in fast-forward situation... which makes this issue moot. You need to worry about creating a true merge and not fast-forward when merging a very first branch (assuming that you don't put single-commit changes directly on 'master'); all other later merges are of course in non fast-forward situation.
HTH
How to specify legend position in matplotlib in graph coordinates
The loc parameter specifies in which corner of the bounding box the legend is placed. The default for loc is loc="best" which gives unpredictable results when the bbox_to_anchor argument is used.
Therefore, when specifying bbox_to_anchor, always specify loc as well.
The default for bbox_to_anchor is (0,0,1,1), which is a bounding box over the complete axes. If a different bounding box is specified, is is usually sufficient to use the first two values, which give (x0, y0) of the bounding box.
Below is an example where the bounding box is set to position (0.6,0.5) (green dot) and different loc parameters are tested. Because the legend extents outside the bounding box, the loc parameter may be interpreted as "which corner of the legend shall be placed at position given by the 2-tuple bbox_to_anchor argument".
import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = 6, 3
fig, axes = plt.subplots(ncols=3)
locs = ["upper left", "lower left", "center right"]
for l, ax in zip(locs, axes.flatten()):
ax.set_title(l)
ax.plot([1,2,3],[2,3,1], "b-", label="blue")
ax.plot([1,2,3],[1,2,1], "r-", label="red")
ax.legend(loc=l, bbox_to_anchor=(0.6,0.5))
ax.scatter((0.6),(0.5), s=81, c="limegreen", transform=ax.transAxes)
plt.tight_layout()
plt.show()
See especially this answer for a detailed explanation and the question What does a 4-element tuple argument for 'bbox_to_anchor' mean in matplotlib? .
If you want to specify the legend position in other coordinates than axes coordinates, you can do so by using the
bbox_transform argument. If may make sense to use figure coordinates
ax.legend(bbox_to_anchor=(1,0), loc="lower right", bbox_transform=fig.transFigure)
It may not make too much sense to use data coordinates, but since you asked for it this would be done via bbox_transform=ax.transData.
Can we add div inside table above every <tr>?
You can not use tag to make group of more than one tag. If you want to make group of tag for any purpose like in ajax to change particular group or in CSS to change style of particular tag etc. then use
Ex.
<table>
<tbody id="foods">
<tr>
<td>Group 1</td>
</tr>
<tr>
<td>Group 1</td>
</tr>
</tbody>
<tbody id="drinks">
<tr>
<td>Group 2</td>
</tr>
<tr>
<td>Group 2</td>
</tr>
</tbody>
</table>
How to use execvp()
In cpp, you need to pay special attention to string types when using execvp:
#include <iostream>
#include <string>
#include <cstring>
#include <stdio.h>
#include <unistd.h>
using namespace std;
const size_t MAX_ARGC = 15; // 1 command + # of arguments
char* argv[MAX_ARGC + 1]; // Needs +1 because of the null terminator at the end
// c_str() converts string to const char*, strdup converts const char* to char*
argv[0] = strdup(command.c_str());
// start filling up the arguments after the first command
size_t arg_i = 1;
while (cin && arg_i < MAX_ARGC) {
string arg;
cin >> arg;
if (arg.empty()) {
argv[arg_i] = nullptr;
break;
} else {
argv[arg_i] = strdup(arg.c_str());
}
++arg_i;
}
// Run the command with arguments
if (execvp(command.c_str(), argv) == -1) {
// Print error if command not found
cerr << "command '" << command << "' not found\n";
}
Reference: execlp?execvp?????
How do you change the formatting options in Visual Studio Code?
Same thing happened to me just now. I set prettier as the Default Formatter in Settings and it started working again. My Default Formatter was null.
To set VSCODE Default Formatter
File -> Preferences -> Settings (for Windows) Code -> Preferences -> Settings (for Mac)
Search for "Default Formatter". In the dropdown, prettier will show as esbenp.prettier-vscode.
D3 Appending Text to a SVG Rectangle
Have you tried the SVG text element?
.append("text").text(function(d, i) { return d[whichevernode];})
rect element doesn't permit text element inside of it. It only allows descriptive elements (<desc>, <metadata>, <title>) and animation elements (<animate>, <animatecolor>, <animatemotion>, <animatetransform>, <mpath>, <set>)
Append the text element as a sibling and work on positioning.
UPDATE
Using g grouping, how about something like this? fiddle
You can certainly move the logic to a CSS class you can append to, remove from the group (this.parentNode)
Convert multiple rows into one with comma as separator
DECLARE @EmployeeList varchar(100)
SELECT @EmployeeList = COALESCE(@EmployeeList + ', ', '') +
CAST(Emp_UniqueID AS varchar(5))
FROM SalesCallsEmployees
WHERE SalCal_UniqueID = 1
SELECT @EmployeeList
source: http://www.sqlteam.com/article/using-coalesce-to-build-comma-delimited-string
Way to get number of digits in an int?
I wrote this function after looking Integer.java source code.
private static int stringSize(int x) {
final int[] sizeTable = {9, 99, 999, 9_999, 99_999, 999_999, 9_999_999,
99_999_999, 999_999_999, Integer.MAX_VALUE};
for (int i = 0; ; ++i) {
if (x <= sizeTable[i]) {
return i + 1;
}
}
}
How to solve privileges issues when restore PostgreSQL Database
Use the postgres (admin) user to dump the schema, recreate it and grant priviledges for use before you do your restore. In one command:
sudo -u postgres psql -c "DROP SCHEMA public CASCADE;
create SCHEMA public;
grant usage on schema public to public;
grant create on schema public to public;" myDBName
How do you install GLUT and OpenGL in Visual Studio 2012?
OpenGL is bundled with Visual Studio. You just need to install GLUT package (freeglut would be fine), which can be found in NuGet.
Open your solution, click TOOLS->NuGet Package Manager->Package Manager Console to open a NuGet console, type Install-Package freeglut.
--
For VS 2013, use nupengl.core package instead.
--
It's 2020 now. Use VCPKG.
How to make my font bold using css?
You'd use font-weight: bold.
Do you want to make the entire document bold? Or just parts of it?
jQuery SVG, why can't I addClass?
Or just use old-school DOM methods when JQ has a monkey in the middle somewhere.
var myElement = $('#my_element')[0];
var myElClass = myElement.getAttribute('class').split(/\s+/g);
//splits class into an array based on 1+ white space characters
myElClass.push('new_class');
myElement.setAttribute('class', myElClass.join(' '));
//$(myElement) to return to JQ wrapper-land
Learn the DOM people. Even in 2016's framework-palooza it helps quite regularly. Also, if you ever hear someone compare the DOM to assembly, kick them for me.
How can I URL encode a string in Excel VBA?
The VBA-tools library has a function for that:
http://vba-tools.github.io/VBA-Web/docs/#/WebHelpers/UrlEncode
It seems to work similar to encodeURIComponent() in JavaScript.
Refreshing data in RecyclerView and keeping its scroll position
That's working for me in Kotlin.
- Create the Adapter and hand over your data in the constructor
class LEDRecyclerAdapter (var currentPole: Pole): RecyclerView.Adapter<RecyclerView.ViewHolder>() { ... }
- change this property and call notifyDataSetChanged()
adapter.currentPole = pole
adapter.notifyDataSetChanged()
The scroll offset doesn't change.
How to Disable landscape mode in Android?
if your activity related to the first device orientation state,get the current device orientation in the onCreate method and then fix it forever:
int deviceRotation = ((WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getOrientation();
if(deviceRotation == Surface.ROTATION_0) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
else if(deviceRotation == Surface.ROTATION_180)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
}
else if(deviceRotation == Surface.ROTATION_90)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
else if(deviceRotation == Surface.ROTATION_270)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
Change directory in PowerShell
Unlike the CMD.EXE CHDIR or CD command, the PowerShell Set-Location cmdlet will change drive and directory, both. Get-Help Set-Location -Full will get you more detailed information on Set-Location, but the basic usage would be
PS C:\> Set-Location -Path Q:\MyDir
PS Q:\MyDir>
By default in PowerShell, CD and CHDIR are alias for Set-Location.
(Asad reminded me in the comments that if the path contains spaces, it must be enclosed in quotes.)
Is there an easy way to convert Android Application to IPad, IPhone
I think you cannot speak of a "conversion" here. That will be a whole project. To "convert" it i think you have to write it again for the iphone.
Have a look at this question:
Is there a multiplatform framework for developing iPhone / Android applications?
As you can see from the answers there, there is no good way of developing applications for both platforms at the same time (except if you're developing games where flash makes it easy to be portable).
how to force maven to update local repo
If you are installing into local repository, there is no special index/cache update needed.
Make sure that:
You have installed the first artifact in your local repository properly. Simply copying the file to
.m2may not work as expected. Make sure you install it bymvn installThe dependency in 2nd project is setup correctly. Check on any typo in
groupId/artifactId/version, or unmatched artifacttype/classifier.
Check orientation on Android phone
Use getResources().getConfiguration().orientation it's the right way.
You just have to watch out for different types of landscapes, the landscape that the device normally uses and the other.
Still don't understand how to manage that.
Jquery post, response in new window
Accepted answer doesn't work with "use strict" as the "with" statement throws an error. So instead:
$.post(url, function (data) {
var w = window.open('about:blank', 'windowname');
w.document.write(data);
w.document.close();
});
Also, make sure 'windowname' doesn't have any spaces in it because that will fail in IE :)
How to query GROUP BY Month in a Year
You can use:
select FK_Items,Sum(PoiQuantity) Quantity from PurchaseOrderItems POI
left join PurchaseOrder PO ON po.ID_PurchaseOrder=poi.FK_PurchaseOrder
group by FK_Items,DATEPART(MONTH, TransDate)
Uploading images using Node.js, Express, and Mongoose
You can configure the connect body parser middleware in a configuration block in your main application file:
/** Form Handling */
app.use(express.bodyParser({
uploadDir: '/tmp/uploads',
keepExtensions: true
}))
app.use(express.limit('5mb'));
size of struct in C
Aligning to 6 bytes is not weird, because it is aligning to addresses multiple to 4.
So basically you have 34 bytes in your structure and the next structure should be placed on the address, that is multiple to 4. The closest value after 34 is 36. And this padding area counts into the size of the structure.
How can I change property names when serializing with Json.net?
You could decorate the property you wish controlling its name with the [JsonProperty] attribute which allows you to specify a different name:
using Newtonsoft.Json;
// ...
[JsonProperty(PropertyName = "FooBar")]
public string Foo { get; set; }
Documentation: Serialization Attributes
How to avoid pressing Enter with getchar() for reading a single character only?
By default, the C library buffers the output until it sees a return. To print out the results immediately, use fflush:
while((c=getchar())!= EOF)
{
putchar(c);
fflush(stdout);
}
super() in Java
Yes, super() (lowercase) calls a constructor of the parent class. You can include arguments: super(foo, bar)
There is also a super keyword, that you can use in methods to invoke a method of the superclass
A quick google for "Java super" results in this
How best to include other scripts?
An alternative to:
scriptPath=$(dirname $0)
is:
scriptPath=${0%/*}
.. the advantage being not having the dependence on dirname, which is not a built-in command (and not always available in emulators)
form confirm before submit
var r = confirm('Want to delete ?');
if (r == true) {
$('#admin-category-destroy').submit();
}
Execute SQL script from command line
Feedback Guys, first create database example live; before execute sql file below.
sqlcmd -U SA -P yourPassword -S YourHost -d live -i live.sql
How to determine the current iPhone/device model?
Here an modification without force unwrap and Swift 3.0:
import Foundation
import UIKit
public enum Model : String {
case simulator = "simulator/sandbox",
iPod1 = "iPod 1",
iPod2 = "iPod 2",
iPod3 = "iPod 3",
iPod4 = "iPod 4",
iPod5 = "iPod 5",
iPad2 = "iPad 2",
iPad3 = "iPad 3",
iPad4 = "iPad 4",
iPhone4 = "iPhone 4",
iPhone4S = "iPhone 4S",
iPhone5 = "iPhone 5",
iPhone5S = "iPhone 5S",
iPhone5C = "iPhone 5C",
iPadMini1 = "iPad Mini 1",
iPadMini2 = "iPad Mini 2",
iPadMini3 = "iPad Mini 3",
iPadAir1 = "iPad Air 1",
iPadAir2 = "iPad Air 2",
iPhone6 = "iPhone 6",
iPhone6plus = "iPhone 6 Plus",
iPhone6S = "iPhone 6S",
iPhone6Splus = "iPhone 6S Plus",
iPhoneSE = "iPhone SE",
iPhone7 = "iPhone 7",
iPhone7plus = "iPhone 7 Plus",
unrecognized = "?unrecognized?"
}
public extension UIDevice {
public var type: Model {
var systemInfo = utsname()
uname(&systemInfo)
let modelCode = withUnsafePointer(to: &systemInfo.machine) {
$0.withMemoryRebound(to: CChar.self, capacity: 1) {
ptr in String.init(validatingUTF8: ptr)
}
}
var modelMap : [ String : Model ] = [
"i386" : .simulator,
"x86_64" : .simulator,
"iPod1,1" : .iPod1,
"iPod2,1" : .iPod2,
"iPod3,1" : .iPod3,
"iPod4,1" : .iPod4,
"iPod5,1" : .iPod5,
"iPad2,1" : .iPad2,
"iPad2,2" : .iPad2,
"iPad2,3" : .iPad2,
"iPad2,4" : .iPad2,
"iPad2,5" : .iPadMini1,
"iPad2,6" : .iPadMini1,
"iPad2,7" : .iPadMini1,
"iPhone3,1" : .iPhone4,
"iPhone3,2" : .iPhone4,
"iPhone3,3" : .iPhone4,
"iPhone4,1" : .iPhone4S,
"iPhone5,1" : .iPhone5,
"iPhone5,2" : .iPhone5,
"iPhone5,3" : .iPhone5C,
"iPhone5,4" : .iPhone5C,
"iPad3,1" : .iPad3,
"iPad3,2" : .iPad3,
"iPad3,3" : .iPad3,
"iPad3,4" : .iPad4,
"iPad3,5" : .iPad4,
"iPad3,6" : .iPad4,
"iPhone6,1" : .iPhone5S,
"iPhone6,2" : .iPhone5S,
"iPad4,1" : .iPadAir1,
"iPad4,2" : .iPadAir2,
"iPad4,4" : .iPadMini2,
"iPad4,5" : .iPadMini2,
"iPad4,6" : .iPadMini2,
"iPad4,7" : .iPadMini3,
"iPad4,8" : .iPadMini3,
"iPad4,9" : .iPadMini3,
"iPhone7,1" : .iPhone6plus,
"iPhone7,2" : .iPhone6,
"iPhone8,1" : .iPhone6S,
"iPhone8,2" : .iPhone6Splus,
"iPhone8,4" : .iPhoneSE,
"iPhone9,1" : .iPhone7,
"iPhone9,2" : .iPhone7plus,
"iPhone9,3" : .iPhone7,
"iPhone9,4" : .iPhone7plus,
]
guard let safeModelCode = modelCode else {
return Model.unrecognized
}
guard let modelString = String.init(validatingUTF8: safeModelCode) else {
return Model.unrecognized
}
guard let model = modelMap[modelString] else {
return Model.unrecognized
}
return model
}
}
How to run an external program, e.g. notepad, using hyperlink?
Try this
<html>
<head>
<script type="text/javascript">
function runProgram()
{
var shell = new ActiveXObject("WScript.Shell");
var appWinMerge = "\"C:\\Program Files\\WinMerge\\WinMergeU.exe\" /e /s /u /wl /wr /maximize";
var fileLeft = "\"D:\\Path\\to\\your\\file\"";
var fileRight= "\"D:\\Path\\to\\your\\file2\"";
shell.Run(appWinMerge + " " + fileLeft + " " + fileRight);
}
</script>
</head>
<body>
<a href="javascript:runProgram()">Run program</a>
</body>
</html>
Java 8: Lambda-Streams, Filter by Method with Exception
Use #propagate() method. Sample non-Guava implementation from Java 8 Blog by Sam Beran:
public class Throwables {
public interface ExceptionWrapper<E> {
E wrap(Exception e);
}
public static <T> T propagate(Callable<T> callable) throws RuntimeException {
return propagate(callable, RuntimeException::new);
}
public static <T, E extends Throwable> T propagate(Callable<T> callable, ExceptionWrapper<E> wrapper) throws E {
try {
return callable.call();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw wrapper.wrap(e);
}
}
}
How to export settings?
Enable portable mode: https://code.visualstudio.com/docs/editor/portable
Summary: Portable Mode instructs VSC to store all its configuration and plugins in a specific directory (called data/ in Windows and Linux and code-portable-data in MacOS). At any time you could copy the data directory and copy it on another installation.
javascript window.location in new tab
This works for me on Chrome 53. Haven't tested anywhere else:
function navigate(href, newTab) {
var a = document.createElement('a');
a.href = href;
if (newTab) {
a.setAttribute('target', '_blank');
}
a.click();
}
Execute PowerShell Script from C# with Commandline Arguments
I had trouble passing parameters to the Commands.AddScript method.
C:\Foo1.PS1 Hello World Hunger
C:\Foo2.PS1 Hello World
scriptFile = "C:\Foo1.PS1"
parameters = "parm1 parm2 parm3" ... variable length of params
I Resolved this by passing null as the name and the param as value into a collection of CommandParameters
Here is my function:
private static void RunPowershellScript(string scriptFile, string scriptParameters)
{
RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();
Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration);
runspace.Open();
RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
Pipeline pipeline = runspace.CreatePipeline();
Command scriptCommand = new Command(scriptFile);
Collection<CommandParameter> commandParameters = new Collection<CommandParameter>();
foreach (string scriptParameter in scriptParameters.Split(' '))
{
CommandParameter commandParm = new CommandParameter(null, scriptParameter);
commandParameters.Add(commandParm);
scriptCommand.Parameters.Add(commandParm);
}
pipeline.Commands.Add(scriptCommand);
Collection<PSObject> psObjects;
psObjects = pipeline.Invoke();
}
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]]
You have a version conflict, please verify whether compiled version and JVM of Tomcat version are same. you can do it by examining tomcat startup .bat , looking for JAVA_HOME
How can I add reflection to a C++ application?
You need to look at what you are trying to do, and if RTTI will satisfy your requirements. I've implemented my own pseudo-reflection for some very specific purposes. For example, I once wanted to be able to flexibly configure what a simulation would output. It required adding some boilerplate code to the classes that would be output:
namespace {
static bool b2 = Filter::Filterable<const MyObj>::Register("MyObject");
}
bool MyObj::BuildMap()
{
Filterable<const OutputDisease>::AddAccess("time", &MyObj::time);
Filterable<const OutputDisease>::AddAccess("person", &MyObj::id);
return true;
}
The first call adds this object to the filtering system, which calls the BuildMap() method to figure out what methods are available.
Then, in the config file, you can do something like this:
FILTER-OUTPUT-OBJECT MyObject
FILTER-OUTPUT-FILENAME file.txt
FILTER-CLAUSE-1 person == 1773
FILTER-CLAUSE-2 time > 2000
Through some template magic involving boost, this gets translated into a series of method calls at run-time (when the config file is read), so it's fairly efficient. I wouldn't recommend doing this unless you really need to, but, when you do, you can do some really cool stuff.
How do I set path while saving a cookie value in JavaScript?
For access cookie in whole app (use path=/):
function createCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else var expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}
Note:
If you set
path=/,
Now the cookie is available for whole application/domain. If you not specify the path then current cookie is save just for the current page you can't access it on another page(s).
For more info read- http://www.quirksmode.org/js/cookies.html (Domain and path part)
If you use cookies in jquery by plugin jquery-cookie:
$.cookie('name', 'value', { expires: 7, path: '/' });
//or
$.cookie('name', 'value', { path: '/' });
Installing a local module using npm?
So I had a lot of problems with all of the solutions mentioned so far...
I have a local package that I want to always reference (rather than npm link) because it won't be used outside of this project (for now) and also won't be uploaded to an npm repository for wide use as of yet.
I also need it to work on Windows AND Unix, so sym-links aren't ideal.
Pointing to the tar.gz result of (npm package) works for the dependent npm package folder, however this causes issues with the npm cache if you want to update the package. It doesn't always pull in the new one from the referenced npm package when you update it, even if you blow away node_modules and re-do your npm-install for your main project.
so.. This is what worked well for me!
Main Project's Package.json File Snippet:
"name": "main-project-name",
"version": "0.0.0",
"scripts": {
"ng": "ng",
...
"preinstall": "cd ../some-npm-package-angular && npm install && npm run build"
},
"private": true,
"dependencies": {
...
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist",
...
}
This achieves 3 things:
- Avoids the common error (at least with angular npm projects) "index.ts is not part of the compilation." - as it points to the built (dist) folder.
- Adds a preinstall step to build the referenced npm client package to make sure the dist folder of our dependent package is built.
- Avoids issues where referencing a tar.gz file locally may be cached by npm and not updated in the main project without lots of cleaning/troubleshooting/re-building/re-installing.
I hope this is clear, and helps someone out.
The tar.gz approach also sort of works..
npm install (file path) also sort of works.
This was all based off of a generated client from an openapi spec that we wanted to keep in a separate location (rather than using copy-pasta for individual files)
====== UPDATE: ======
There are additional errors with a regular development flow with the above solution, as npm's versioning scheme with local files is absolutely terrible. If your dependent package changes frequently, this whole scheme breaks because npm will cache your last version of the project and then blow up when the SHA hash doesn't match anymore with what was saved in your package-lock.json file, among other issues.
As a result, I recommend using the *.tgz approach with a version update for each change. This works by doing three things.
First:
For your dependent package, use the npm library "ng-packagr". This is automatically added to auto-generated client packages created by the angular-typescript code generator for OpenAPI 3.0.
As a result the project that I'm referencing has a "scripts" section within package.json that looks like this:
"scripts": {
"build": "ng-packagr -p ng-package.json",
"package": "npm install && npm run build && cd dist && npm pack"
},
And the project referencing this other project adds a pre-install step to make sure the dependent project is up to date and rebuilt before building itself:
"scripts": {
"preinstall": "npm run clean && cd ../some-npm-package-angular && npm run package"
},
Second
Reference the built tgz npm package from your main project!
"dependencies": {
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist/some-npm-package-angular-<packageVersion>.tgz",
...
}
Third
Update the dependent package's version EVERY TIME you update the dependent package. You'll also have to update the version in the main project.
If you do not do this, NPM will choke and use a cached version and explode when the SHA hash doesn't match. NPM versions file-based packages based on the filename changing. It won't check the package itself for an updated version in package.json, and the NPM team stated that they will not fix this, but people keep raising the issue: https://github.com/microsoft/WSL/issues/348
for now, just update the:
"version": "1.0.0-build5",
In the dependent package's package.json file, then update your reference to it in the main project to reference the new filename, ex:
"dependencies": {
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist/some-npm-package-angular-1.0.0-build5.tgz",
...
}
You get used to it. Just update the two package.json files - version then the ref to the new filename.
Hope that helps someone...
What is the (function() { } )() construct in JavaScript?
An immediately invoked function expression (IIFE) is a function that's executed as soon as it's created. It has no connection with any events or asynchronous execution. You can define an IIFE as shown below:
(function() {
// all your code here
// ...
})();
The first pair of parentheses function(){...} converts the code inside the parentheses into an expression.The second pair of parentheses calls the function resulting from the expression.
An IIFE can also be described as a self-invoking anonymous function. Its most common usage is to limit the scope of a variable made via var or to encapsulate context to avoid name collisions.
How to support HTTP OPTIONS verb in ASP.NET MVC/WebAPI application
I've had same problem, and this is how I fixed it:
Just throw this in your web.config:
<system.webServer>
<modules>
<remove name="WebDAVModule" />
</modules>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Expose-Headers " value="WWW-Authenticate"/>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Methods" value="GET, POST, OPTIONS, PUT, PATCH, DELETE" />
<add name="Access-Control-Allow-Headers" value="accept, authorization, Content-Type" />
<remove name="X-Powered-By" />
</customHeaders>
</httpProtocol>
<handlers>
<remove name="WebDAV" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<remove name="TRACEVerbHandler" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
</system.webServer>
Current date and time as string
#include <chrono>
#include <iostream>
int main()
{
std::time_t ct = std::time(0);
char* cc = ctime(&ct);
std::cout << cc << std::endl;
return 0;
}
How to gzip all files in all sub-directories into one compressed file in bash
there are lots of compression methods that work recursively command line and its good to know who the end audience is.
i.e. if it is to be sent to someone running windows then zip would probably be best:
zip -r file.zip folder_to_zip
unzip filenname.zip
for other linux users or your self tar is great
tar -cvzf filename.tar.gz folder
tar -cvjf filename.tar.bz2 folder # even more compression
#change the -c to -x to above to extract
One must be careful with tar and how things are tarred up/extracted, for example if I run
cd ~
tar -cvzf passwd.tar.gz /etc/passwd
tar: Removing leading `/' from member names
/etc/passwd
pwd
/home/myusername
tar -xvzf passwd.tar.gz
this will create /home/myusername/etc/passwd
unsure if all versions of tar do this:
Removing leading `/' from member names
Convert JsonObject to String
Add a double quotes outside the brackets and replace double quotes inside the {} with \"
So: "{\"data\":{..... }"
How to add (vertical) divider to a horizontal LinearLayout?
You have to create the any view for separater like textview or imageview then set the background for that if you have image else use the color as the background.
Hope this helps you.
How do I programmatically click on an element in JavaScript?
Are you trying to actually follow the link or trigger the onclick? You can trigger an onclick with something like this:
var link = document.getElementById(linkId);
link.onclick.call(link);
How to check if array element is null to avoid NullPointerException in Java
public static void main(String s[])
{
int firstArray[] = {2, 14, 6, 82, 22};
int secondArray[] = {3, 16, 12, 14, 48, 96};
int number = getCommonMinimumNumber(firstArray, secondArray);
System.out.println("The number is " + number);
}
public static int getCommonMinimumNumber(int firstSeries[], int secondSeries[])
{
Integer result =0;
if ( firstSeries.length !=0 && secondSeries.length !=0 )
{
series(firstSeries);
series(secondSeries);
one : for (int i = 0 ; i < firstSeries.length; i++)
{
for (int j = 0; j < secondSeries.length; j++)
if ( firstSeries[i] ==secondSeries[j])
{
result =firstSeries[i];
break one;
}
else
result = -999;
}
}
else if ( firstSeries == Null || secondSeries == null)
result =-999;
else
result = -999;
return result;
}
public static int[] series(int number[])
{
int temp;
boolean fixed = false;
while(fixed == false)
{
fixed = true;
for ( int i =0 ; i < number.length-1; i++)
{
if ( number[i] > number[i+1])
{
temp = number[i+1];
number[i+1] = number[i];
number[i] = temp;
fixed = false;
}
}
}
/*for ( int i =0 ;i< number.length;i++)
System.out.print(number[i]+",");*/
return number;
}
How to dynamically add a style for text-align using jQuery
function add_question(){ var count=document.getElementById("nofquest").value; var container = document.getElementById("container"); // Clear previous contents of the container while (container.hasChildNodes()) { container.removeChild(container.lastChild); } for (i=1;ihow to set center of the textboxes
Iteration ng-repeat only X times in AngularJs
Angular comes with a limitTo:limit filter, it support limiting first x items and last x items:
<div ng-repeat="item in items|limitTo:4">{{item}}</div>
How do you declare string constants in C?
Their are a few differences.
#define HELLO "Hello World"
The statement above can be used with preprocessor and can only be change in the preprocessor.
const char *HELLO2 = "Howdy";
The statement above can be changed with c code. Now you can't change the each individual character around like the statement below because its constant.
HELLO2[0] = 'a'
But you what you can do is have it point to a different string like the statement below
HELLO2 = "HELLO WOLRD"
It really depends on how you want to be able to change the variable around. With the preprocessor or c code.
Make new column in Panda dataframe by adding values from other columns
You could do:
df['C'] = df.sum(axis=1)
If you only want to do numerical values:
df['C'] = df.sum(axis=1, numeric_only=True)
The SELECT permission was denied on the object 'Users', database 'XXX', schema 'dbo'
Check space of your database.this error comes when space increased compare to space given to database.
Rename Files and Directories (Add Prefix)
This could be done running a simple find command:
find * -maxdepth 0 -exec mv {} PRE_{} \;
The above command will prefix all files and folders in the current directory with PRE_.
PHP file_get_contents() and setting request headers
Yes.
When calling file_get_contents on a URL, one should use the stream_create_context function, which is fairly well documented on php.net.
This is more or less exactly covered on the following page at php.net in the user comments section: http://php.net/manual/en/function.stream-context-create.php
Gradle to execute Java class (without modifying build.gradle)
You can parameterise it and pass gradle clean build -Pprokey=goodbye
task choiceMyMainClass(type: JavaExec) {
group = "Execution"
description = "Run Option main class with JavaExecTask"
classpath = sourceSets.main.runtimeClasspath
if (project.hasProperty('prokey')){
if (prokey == 'hello'){
main = 'com.sam.home.HelloWorld'
}
else if (prokey == 'goodbye'){
main = 'com.sam.home.GoodBye'
}
} else {
println 'Invalid value is enterrd';
// println 'Invalid value is enterrd'+ project.prokey;
}
How can I convert integer into float in Java?
You shouldn't use float unless you have to. In 99% of cases, double is a better choice.
int x = 1111111111;
int y = 10000;
float f = (float) x / y;
double d = (double) x / y;
System.out.println("f= "+f);
System.out.println("d= "+d);
prints
f= 111111.12
d= 111111.1111
Following @Matt's comment.
float has very little precision (6-7 digits) and shows significant rounding error fairly easily. double has another 9 digits of accuracy. The cost of using double instead of float is notional in 99% of cases however the cost of a subtle bug due to rounding error is much higher. For this reason, many developers recommend not using floating point at all and strongly recommend BigDecimal.
However I find that double can be used in most cases provided sensible rounding is used.
In this case, int x has 32-bit precision whereas float has a 24-bit precision, even dividing by 1 could have a rounding error. double on the other hand has 53-bit of precision which is more than enough to get a reasonably accurate result.
Is it possible to append Series to rows of DataFrame without making a list first?
Something like this could work...
mydf.loc['newindex'] = myseries
Here is an example where I used it...
stats = df[['bp_prob', 'ICD9_prob', 'meds_prob', 'regex_prob']].describe()
stats
Out[32]:
bp_prob ICD9_prob meds_prob regex_prob
count 171.000000 171.000000 171.000000 171.000000
mean 0.179946 0.059071 0.067020 0.126812
std 0.271546 0.142681 0.152560 0.207014
min 0.000000 0.000000 0.000000 0.000000
25% 0.000000 0.000000 0.000000 0.000000
50% 0.000000 0.000000 0.000000 0.013116
75% 0.309019 0.065248 0.066667 0.192954
max 1.000000 1.000000 1.000000 1.000000
medians = df[['bp_prob', 'ICD9_prob', 'meds_prob', 'regex_prob']].median()
stats.loc['median'] = medians
stats
Out[36]:
bp_prob ICD9_prob meds_prob regex_prob
count 171.000000 171.000000 171.000000 171.000000
mean 0.179946 0.059071 0.067020 0.126812
std 0.271546 0.142681 0.152560 0.207014
min 0.000000 0.000000 0.000000 0.000000
25% 0.000000 0.000000 0.000000 0.000000
50% 0.000000 0.000000 0.000000 0.013116
75% 0.309019 0.065248 0.066667 0.192954
max 1.000000 1.000000 1.000000 1.000000
median 0.000000 0.000000 0.000000 0.013116
How to select the first element in the dropdown using jquery?
Your selector is wrong, you were probably looking for
$('select option:nth-child(1)')
This will work also:
$('select option:first-child')
If table exists drop table then create it, if it does not exist just create it
Just put DROP TABLE IF EXISTS `tablename`; before your CREATE TABLE statement.
That statement drops the table if it exists but will not throw an error if it does not.
MySQL "ERROR 1005 (HY000): Can't create table 'foo.#sql-12c_4' (errno: 150)"
Also both the tables need to have same character set.
for e.g.
CREATE TABLE1 (
FIELD1 VARCHAR(100) NOT NULL PRIMARY KEY,
FIELD2 VARCHAR(100) NOT NULL
)ENGINE=INNODB CHARACTER SET utf8 COLLATE utf8_bin;
to
CREATE TABLE2 (
Field3 varchar(64) NOT NULL PRIMARY KEY,
Field4 varchar(64) NOT NULL,
CONSTRAINT FORIGEN KEY (Field3) REFERENCES TABLE1(FIELD1)
) ENGINE=InnoDB;
Will fail because they have different charsets. This is another subtle failure where mysql returns same error.
How to set an HTTP proxy in Python 2.7?
It looks like get-pip.py has been updated to use the environment variables http_proxy and https_proxy.
Windows:
set http_proxy=http://proxy.myproxy.com
set https_proxy=https://proxy.myproxy.com
python get-pip.py
Linux/OS X:
export http_proxy=http://proxy.myproxy.com
export https_proxy=https://proxy.myproxy.com
sudo -E python get-pip.py
However if this still doesn't work for you, you can always install pip through a proxy using setuptools' easy_install by setting the same environment variables.
Windows:
set http_proxy=http://proxy.myproxy.com
set https_proxy=https://proxy.myproxy.com
easy_install pip
Linux/OS X:
export http_proxy=http://proxy.myproxy.com
export https_proxy=https://proxy.myproxy.com
sudo -E easy_install pip
Then once it's installed, use:
pip install --proxy="user:password@server:port" packagename
From the pip man page:
--proxy
Have pip use a proxy server to access sites. This can be specified using "user:[email protected]:port" notation. If the password is left out, pip will ask for it.
How do I tell if a variable has a numeric value in Perl?
I found this interesting though
if ( $value + 0 eq $value) {
# A number
push @args, $value;
} else {
# A string
push @args, "'$value'";
}
Remove values from select list based on condition
Alternatively you can also accomplish this with getElementsByName
<select id="mySelect" name="val" size="1" >
<option value="A">Apple</option>
<option value="C">Cars</option>
<option value="H">Honda</option>
<option value="F">Fiat</option>
<option value="I">Indigo</option>
</select>
So in matching on the option value of "C" we could remove Cars from the list.
var selectobject = document.getElementsByName('val')[0];
for (var i=0; i<selectobject.length; i++){
if (selectobject.options[i].value == 'C' )
selectobject.remove(i);
}
How to list the size of each file and directory and sort by descending size in Bash?
you can use the below to list files by size du -h | sort -hr | more or du -h --max-depth=0 * | sort -hr | more
Execute write on doc: It isn't possible to write into a document from an asynchronously-loaded external script unless it is explicitly opened.
In case this is useful to anyone I had this same issue. I was bringing in a footer into a web page via jQuery. Inside that footer were some Google scripts for ads and retargeting. I had to move those scripts from the footer and place them directly in the page and that eliminated the notice.
What's the difference between emulation and simulation?
An "emulator" is a term for a software-based hardware-simulator, but in general the two are synonyms.
Android disable screen timeout while app is running
In a View, in my case a SurfaceView subclass, you can set the screen on always on. I wanted the screen to stay on while this view was still drawing stuff.
public class MyCoolSurfaceView extends SurfaceView {
@Override
protected void onAttachedToWindow (){
super.onAttachedToWindow();
this.setKeepScreenOn(true);
}
@Override
protected void onDetachedFromWindow(){
super.onDetachedFromWindow();
this.setKeepScreenOn(false);
}
How can I roll back my last delete command in MySQL?
In Oracle this would be a non issue:
SQL> delete from Employee where id = '01';
1 row deleted.
SQL> select id, last_name from Employee where id = '01';
no rows selected
SQL> rollback;
Rollback complete.
SQL> select * from Employee where id = '01';
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
.htaccess redirect http to https
Insert this code in your .htaccess file. And it should work
RewriteCond %{HTTP_HOST} yourDomainName\.com [NC]
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://yourDomainName.com/$1 [R,L]
Automatically pass $event with ng-click?
I wouldn't recommend doing this, but you can override the ngClick directive to do what you are looking for. That's not saying, you should.
With the original implementation in mind:
compile: function($element, attr) {
var fn = $parse(attr[directiveName]);
return function(scope, element, attr) {
element.on(lowercase(name), function(event) {
scope.$apply(function() {
fn(scope, {$event:event});
});
});
};
}
We can do this to override it:
// Go into your config block and inject $provide.
app.config(function ($provide) {
// Decorate the ngClick directive.
$provide.decorator('ngClickDirective', function ($delegate) {
// Grab the actual directive from the returned $delegate array.
var directive = $delegate[0];
// Stow away the original compile function of the ngClick directive.
var origCompile = directive.compile;
// Overwrite the original compile function.
directive.compile = function (el, attrs) {
// Apply the original compile function.
origCompile.apply(this, arguments);
// Return a new link function with our custom behaviour.
return function (scope, el, attrs) {
// Get the name of the passed in function.
var fn = attrs.ngClick;
el.on('click', function (event) {
scope.$apply(function () {
// If no property on scope matches the passed in fn, return.
if (!scope[fn]) {
return;
}
// Throw an error if we misused the new ngClick directive.
if (typeof scope[fn] !== 'function') {
throw new Error('Property ' + fn + ' is not a function on ' + scope);
}
// Call the passed in function with the event.
scope[fn].call(null, event);
});
});
};
};
return $delegate;
});
});
Then you'd pass in your functions like this:
<div ng-click="func"></div>
as opposed to:
<div ng-click="func()"></div>
jsBin: http://jsbin.com/piwafeke/3/edit
Like I said, I would not recommend doing this but it's a proof of concept showing you that, yes - you can in fact overwrite/extend/augment the builtin angular behaviour to fit your needs. Without having to dig all that deep into the original implementation.
Do please use it with care, if you were to decide on going down this path (it's a lot of fun though).
Change date format in a Java string
private SimpleDateFormat dataFormat = new SimpleDateFormat("dd/MM/yyyy");
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if(value instanceof Date) {
value = dataFormat.format(value);
}
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
};
Change header background color of modal of twitter bootstrap
You can use the css below, put this in your custom css to override the bootstrap css.
.modal-header {
padding:9px 15px;
border-bottom:1px solid #eee;
background-color: #0480be;
-webkit-border-top-left-radius: 5px;
-webkit-border-top-right-radius: 5px;
-moz-border-radius-topleft: 5px;
-moz-border-radius-topright: 5px;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
}
Can I add and remove elements of enumeration at runtime in Java
You can load a Java class from source at runtime. (Using JCI, BeanShell or JavaCompiler)
This would allow you to change the Enum values as you wish.
Note: this wouldn't change any classes which referred to these enums so this might not be very useful in reality.
Convert String to Double - VB
I simple used Eval(string) and it evaluated as Double.
Reflection: How to Invoke Method with parameters
I would use it like this, its way shorter and it won't give any problems
dynamic result = null;
if (methodInfo != null)
{
ParameterInfo[] parameters = methodInfo.GetParameters();
object classInstance = Activator.CreateInstance(type, null);
result = methodInfo.Invoke(classInstance, parameters.Length == 0 ? null : parametersArray);
}
How to add new item to hash
hash.store(key, value) - Stores a key-value pair in hash.
Example:
hash #=> {"a"=>9, "b"=>200, "c"=>4}
hash.store("d", 42) #=> 42
hash #=> {"a"=>9, "b"=>200, "c"=>4, "d"=>42}
Use multiple @font-face rules in CSS
Note, you may also be interested in:
Custom web font not working in IE9
Which includes a more descriptive breakdown of the CSS you see below (and explains the tweaks that make it work better on IE6-9).
@font-face {
font-family: 'Bumble Bee';
src: url('bumblebee-webfont.eot');
src: local('?'),
url('bumblebee-webfont.woff') format('woff'),
url('bumblebee-webfont.ttf') format('truetype'),
url('bumblebee-webfont.svg#webfontg8dbVmxj') format('svg');
}
@font-face {
font-family: 'GestaReFogular';
src: url('gestareg-webfont.eot');
src: local('?'),
url('gestareg-webfont.woff') format('woff'),
url('gestareg-webfont.ttf') format('truetype'),
url('gestareg-webfont.svg#webfontg8dbVmxj') format('svg');
}
body {
background: #fff url(../images/body-bg-corporate.gif) repeat-x;
padding-bottom: 10px;
font-family: 'GestaRegular', Arial, Helvetica, sans-serif;
}
h1 {
font-family: "Bumble Bee", "Times New Roman", Georgia, Serif;
}
And your follow-up questions:
Q. I would like to use a font such as "Bumble bee," for example. How can I use
@font-faceto make that font available on the user's computer?
Note that I don't know what the name of your Bumble Bee font or file is, so adjust accordingly, and that the font-face declaration should precede (come before) your use of it, as I've shown above.
Q. Can I still use the other
@font-facetypeface "GestaRegular" as well? Can I use both in the same stylesheet?
Just list them together as I've shown in my example. There is no reason you can't declare both. All that @font-face does is instruct the browser to download and make a font-family available. See: http://iliadraznin.com/2009/07/css3-font-face-multiple-weights
Remove last commit from remote git repository
Be careful that this will create an "alternate reality" for people who have already fetch/pulled/cloned from the remote repository. But in fact, it's quite simple:
git reset HEAD^ # remove commit locally
git push origin +HEAD # force-push the new HEAD commit
If you want to still have it in your local repository and only remove it from the remote, then you can use:
git push origin +HEAD^:<name of your branch, most likely 'master'>
How can I create a war file of my project in NetBeans?
It is in the dist folder inside of the project, but only if "Compress WAR File" in the project settings dialog ( build / packaging) ist checked. Before I checked this checkbox there was no dist folder.
What is the use of <<<EOD in PHP?
there are four types of strings available in php. They are single quotes ('), double quotes (") and Nowdoc (<<<'EOD') and heredoc(<<<EOD) strings
you can use both single quotes and double quotes inside heredoc string. Variables will be expanded just as double quotes.
nowdoc strings will not expand variables just like single quotes.
ref: http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc
How to find the lowest common ancestor of two nodes in any binary tree?
You are correct that without a parent node, solution with traversal will give you O(n) time complexity.
Traversal approach Suppose you are finding LCA for node A and B, the most straightforward approach is to first get the path from root to A and then get the path from root to B. Once you have these two paths, you can easily iterate over them and find the last common node, which is the lowest common ancestor of A and B.
Recursive solution Another approach is to use recursion. First, we can get LCA from both left tree and right tree (if exists). If the either of A or B is the root node, then the root is the LCA and we just return the root, which is the end point of the recursion. As we keep divide the tree into sub-trees, eventually, we’ll hit either A and B.
To combine sub-problem solutions, if LCA(left tree) returns a node, we know that both A and B locate in left tree and the returned node is the final result. If both LCA(left) and LCA(right) return non-empty nodes, it means A and B are in left and right tree respectively. In this case, the root node is the lowest common node.
Check Lowest Common Ancestor for detailed analysis and solution.
How to see tomcat is running or not
open your browser,check whether Tomcat homepage is visible by below command.
http://ipaddress:portnumber
also check this
Is there any quick way to get the last two characters in a string?
theString.substring(theString.length() - 2)
No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'
You are just missing a reference to EntityFramework.SqlServer.dll. For EntityFramework projects using SQL Server, the two files you need to refer are EntityFramework.SqlServer.dll and EntityFramework.dll
jquery animate .css
Just use .animate() instead of .css() (with a duration if you want), like this:
$('#hfont1').hover(function() {
$(this).animate({"color":"#efbe5c","font-size":"52pt"}, 1000);
}, function() {
$(this).animate({"color":"#e8a010","font-size":"48pt"}, 1000);
});
You can test it here. Note though, you need either the jQuery color plugin, or jQuery UI included to animate the color. In the above, the duration is 1000ms, you can change it, or just leave it off for the default 400ms duration.
Find files in created between a date range
Try this:
find /var/tmp -mtime +2 -a -mtime -8 -ls
to find files older than 2 days but not older than 8 days.
How to call two methods on button's onclick method in HTML or JavaScript?
The modern event handling method:
element.addEventListener('click', startDragDrop, false);
element.addEventListener('click', spyOnUser, false);
The first argument is the event, the second is the function and the third specifies whether to allow event bubbling.
From QuirksMode:
W3C’s DOM Level 2 Event specification pays careful attention to the problems of the traditional model. It offers a simple way to register as many event handlers as you like for the same event on one element.
The key to the W3C event registration model is the method
addEventListener(). You give it three arguments: the event type, the function to be executed and a boolean (true or false) that I’ll explain later on. To register our well known doSomething() function to the onclick of an element you do:
Full details here: http://www.quirksmode.org/js/events_advanced.html
Using jQuery
if you're using jQuery, there is a nice API for event handling:
$('#myElement').bind('click', function() { doStuff(); });
$('#myElement').bind('click', function() { doMoreStuff(); });
$('#myElement').bind('click', doEvenMoreStuff);
Full details here: http://api.jquery.com/category/events/
Want to upgrade project from Angular v5 to Angular v6
As Vinay Kumar pointed out that it will not update global installed Angular CLI. To update it globally just use following commands:
npm uninstall -g @angular/cli
npm cache clean
npm install -g @angular/cli@latest
Note if you want to update existing project you have to modify existing project, you should change package.json inside your project.
There are no breaking changes in Angular itself but they are in RxJS, so don't forget to use rxjs-compat library to work with legacy code.
npm install --save rxjs-compat
I wrote a good article about installation/updating Angular CLI http://bmnteam.com/angular-cli-installation/
Printing a 2D array in C
...
for(int i=0;i<3;i++){ //Rows
for(int j=0;j<5;j++){ //Cols
printf("%<...>\t",var);
}
printf("\n");
}
...
considering that <...> would be d,e,f,s,c... etc datatype... X)
Is there a way to create interfaces in ES6 / Node 4?
Interfaces are not part of the ES6 but classes are.
If you really need them, you should look at TypeScript which support them.
How to execute a remote command over ssh with arguments?
Do it this way instead:
function mycommand {
ssh [email protected] "cd testdir;./test.sh \"$1\""
}
You still have to pass the whole command as a single string, yet in that single string you need to have $1 expanded before it is sent to ssh so you need to use "" for it.
Update
Another proper way to do this actually is to use printf %q to properly quote the argument. This would make the argument safe to parse even if it has spaces, single quotes, double quotes, or any other character that may have a special meaning to the shell:
function mycommand {
printf -v __ %q "$1"
ssh [email protected] "cd testdir;./test.sh $__"
}
- When declaring a function with
function,()is not necessary. - Don't comment back about it just because you're a POSIXist.
Second line in li starts under the bullet after CSS-reset
The li tag has a property called list-style-position. This makes your bullets inside or outside the list. On default, it’s set to inside. That makes your text wrap around it. If you set it to outside, the text of your li tags will be aligned.
The downside of that is that your bullets won't be aligned with the text outside the ul. If you want to align it with the other text you can use a margin.
ul li {
/*
* We want the bullets outside of the list,
* so the text is aligned. Now the actual bullet
* is outside of the list’s container
*/
list-style-position: outside;
/*
* Because the bullet is outside of the list’s
* container, indent the list entirely
*/
margin-left: 1em;
}
Edit 15th of March, 2014 Seeing people are still coming in from Google, I felt like the original answer could use some improvement
- Changed the code block to provide just the solution
- Changed the indentation unit to
em’s - Each property is applied to the
ulelement - Good comments :)
Where is Maven Installed on Ubuntu
$ mvn --version
and look for Maven home: in the output
, mine is: Maven home: /usr/share/maven
WCF change endpoint address at runtime
This is a simple example of what I used for a recent test. You need to make sure that your security settings are the same on the server and client.
var myBinding = new BasicHttpBinding();
myBinding.Security.Mode = BasicHttpSecurityMode.None;
var myEndpointAddress = new EndpointAddress("http://servername:8732/TestService/");
client = new ClientTest(myBinding, myEndpointAddress);
client.someCall();
How do I extract text that lies between parentheses (round brackets)?
string input = "User name (sales)";
string output = input.Substring(input.IndexOf('(') + 1, input.IndexOf(')') - input.IndexOf('(') - 1);
Excel- compare two cell from different sheet, if true copy value from other cell
In your destination field you want to use VLOOKUP like so:
=VLOOKUP(Sheet1!A1:A100,Sheet2!A1:F100,6,FALSE)
VLOOKUP Arguments:
- The set fields you want to lookup.
- The table range you want to lookup up your value against. The first column of your defined table should be the column you want compared against your lookup field. The table range should also contain the value you want to display (Column F).
- This defines what field you want to display upon a match.
- FALSE tells VLOOKUP to do an exact match.
How to open PDF file in a new tab or window instead of downloading it (using asp.net)?
you can return a FileResult from your MVC action.
*********************MVC action************
public FileResult OpenPDF(parameters)
{
//code to fetch your pdf byte array
return File(pdfBytes, "application/pdf");
}
**************js**************
Use formpost to post your data to action
var inputTag = '<input name="paramName" type="text" value="' + payloadString + '">';
var form = document.createElement("form");
jQuery(form).attr("id", "pdf-form").attr("name", "pdf-form").attr("class", "pdf-form").attr("target", "_blank");
jQuery(form).attr("action", "/Controller/OpenPDF").attr("method", "post").attr("enctype", "multipart/form-data");
jQuery(form).append(inputTag);
document.body.appendChild(form);
form.submit();
document.body.removeChild(form);
return false;
You need to create a form to post your data, append it your dom, post your data and remove the form your document body.
However, form post wouldn't post data to new tab only on EDGE browser. But a get request works as it's just opening new tab with a url containing query string for your action parameters.
How to set the maximum memory usage for JVM?
You shouldn't have to worry about the stack leaking memory (it is highly uncommon). The only time you can have the stack get out of control is with infinite (or really deep) recursion.
This is just the heap. Sorry, didn't read your question fully at first.
You need to run the JVM with the following command line argument.
-Xmx<ammount of memory>
Example:
-Xmx1024m
That will allow a max of 1GB of memory for the JVM.
Load JSON text into class object in c#
To create a json class off a string, copy the string.
In Visual Sudio, click Edit > Paste special > Paste Json as classes.
Deleting folders in python recursively
Here's my pure pathlib recursive directory unlinker:
from pathlib import Path
def rmdir(directory):
directory = Path(directory)
for item in directory.iterdir():
if item.is_dir():
rmdir(item)
else:
item.unlink()
directory.rmdir()
rmdir(Path("dir/"))
Bootstrap - dropdown menu not working?
If you are using electron or other chromium frame, you have to include jquery within window explicitly by:
<script language="javascript" type="text/javascript" src="local_path/jquery.js" onload="window.$ = window.jQuery = module.exports;"></script>
Could not autowire field in spring. why?
Well there's a problem with the creation of the ContactServiceImpl bean. First, make sure that the class is actually instantiated by debugging the no-args constructor when the Spring context is initiated and when an instance of ContactController is created.
If the ContactServiceImpl is actually instantiated by the Spring context, but it's simply not matched against your @Autowire annotation, try being more explicit in your annotation injection. Here's a guy dealing with a similar problem as yours and giving some possible solutions:
http://blogs.sourceallies.com/2011/08/spring-injection-with-resource-and-autowired/
If you ask me, I think you'll be ok if you replace
@Autowired
private ContactService contactService;
with:
@Resource
@Qualifier("contactService")
private ContactService contactService;
Apply global variable to Vuejs
In your main.js file, you have to import Vue like this :
import Vue from 'vue'
Then you have to declare your global variable in the main.js file like this :
Vue.prototype.$actionButton = 'Not Approved'
If you want to change the value of the global variable from another component, you can do it like this :
Vue.prototype.$actionButton = 'approved'
https://vuejs.org/v2/cookbook/adding-instance-properties.html#Base-Example
How to fix: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
this problem can be solved by installing the latest libstdc++.
$ sudo add-apt-repository ppa:ubuntu-toolchain-r/test
$ sudo apt-get update
$ sudo apt-get install libstdc++6-7-dbg
Stop absolutely positioned div from overlapping text
Put a z-indez of -1 on your absolute (or relative) positioned element.
This will pull it out of the stacking context. (I think.) Read more wonderful things about "stacking contexts" here: https://philipwalton.com/articles/what-no-one-told-you-about-z-index/
Using LINQ to remove elements from a List<T>
You cannot do this with standard LINQ operators because LINQ provides query, not update support.
But you can generate a new list and replace the old one.
var authorsList = GetAuthorList();
authorsList = authorsList.Where(a => a.FirstName != "Bob").ToList();
Or you could remove all items in authors in a second pass.
var authorsList = GetAuthorList();
var authors = authorsList.Where(a => a.FirstName == "Bob").ToList();
foreach (var author in authors)
{
authorList.Remove(author);
}
pip broke. how to fix DistributionNotFound error?
I was facing the similar problem in OSx. My stacktrace was saying
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: setuptools>=11.3
Then I did the following
sudo pip install --upgrade setuptools
This solved the problem for me. Hope someone will find this useful.
Python 2.7: %d, %s, and float()
See String Formatting Operations:
%d is the format code for an integer. %f is the format code for a float.
%s prints the str() of an object (What you see when you print(object)).
%r prints the repr() of an object (What you see when you print(repr(object)).
For a float %s, %r and %f all display the same value, but that isn't the case for all objects. The other fields of a format specifier work differently as well:
>>> print('%10.2s' % 1.123) # print as string, truncate to 2 characters in a 10-place field.
1.
>>> print('%10.2f' % 1.123) # print as float, round to 2 decimal places in a 10-place field.
1.12
Parse query string into an array
If you're having a problem converting a query string to an array because of encoded ampersands
&
then be sure to use html_entity_decode
Example:
// Input string //
$input = 'pg_id=2&parent_id=2&document&video';
// Parse //
parse_str(html_entity_decode($input), $out);
// Output of $out //
array(
'pg_id' => 2,
'parent_id' => 2,
'document' => ,
'video' =>
)
Using npm behind corporate proxy .pac
The NPM proxy setup mentioned in the accepted answer solve the problem, but as you can see in this npm issue, some dependencies uses GIT and that makes the git proxy setup needed, and can be done as follow:
git config --global http.proxy http://username:password@host:port
git config --global https.proxy http://username:password@host:port
The NPM proxy setup mentioned:
npm config set proxy "http://username:password@host:port"
npm config set https-proxy "http://username:password@host:port"
npm config set strict-ssl false
npm config set registry "http://registry.npmjs.org/"
How to split a string to 2 strings in C
You can use strtok() for that Example: it works for me
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] ="- This, a sample string.";
char * pch;
printf ("Splitting string \"%s\" into tokens:\n",str);
pch = strtok (str," ,.-");
while (pch != NULL)
{
printf ("%s\n",pch);
pch = strtok (NULL, " ,.-");
}
return 0;
}
Predicate Delegates in C#
Just a delegate that returns a boolean. It is used a lot in filtering lists but can be used wherever you'd like.
List<DateRangeClass> myList = new List<DateRangeClass<GetSomeDateRangeArrayToPopulate);
myList.FindAll(x => (x.StartTime <= minDateToReturn && x.EndTime >= maxDateToReturn):
Bootstrap 3 Multi-column within a single ul not floating properly
You should try using the Grid Template.
Here's what I've used for a two Column Layout of a <ul>
<ul class="list-group row">
<li class="list-group-item col-xs-6">Row1</li>
<li class="list-group-item col-xs-6">Row2</li>
<li class="list-group-item col-xs-6">Row3</li>
<li class="list-group-item col-xs-6">Row4</li>
<li class="list-group-item col-xs-6">Row5</li>
</ul>
This worked for me.
The default XML namespace of the project must be the MSBuild XML namespace
I was getting the same messages while I was running just msbuild from powershell.
dotnet msbuild "./project.csproj" worked for me.
How to subtract days from a plain Date?
A easy way to manage dates is use Moment.js
You can use add. Example
var startdate = "20.03.2014";
var new_date = moment(startdate, "DD.MM.YYYY");
new_date.add(5, 'days'); //Add 5 days to start date
alert(new_date);
Return file in ASP.Net Core Web API
You can return FileResult with this methods:
1: Return FileStreamResult
[HttpGet("get-file-stream/{id}"]
public async Task<FileStreamResult> DownloadAsync(string id)
{
var fileName="myfileName.txt";
var mimeType="application/....";
var stream = await GetFileStreamById(id);
return new FileStreamResult(stream, mimeType)
{
FileDownloadName = fileName
};
}
2: Return FileContentResult
[HttpGet("get-file-content/{id}"]
public async Task<FileContentResult> DownloadAsync(string id)
{
var fileName="myfileName.txt";
var mimeType="application/....";
var fileBytes = await GetFileBytesById(id);
return new FileContentResult(fileBytes, mimeType)
{
FileDownloadName = fileName
};
}
Defining arrays in Google Scripts
I think that maybe it is because you are declaring a variable that you already declared:
var Name = new Array(6);
//...
var Name[0] = Name_cell.getValue(); // <-- Here's the issue: 'var'
I think this should be like this:
var Name = new Array(6);
//...
Name[0] = Name_cell.getValue();
Tell me if it works! ;)
Difference between <input type='button' /> and <input type='submit' />
A 'button' is just that, a button, to which you can add additional functionality using Javascript. A 'submit' input type has the default functionality of submitting the form it's placed in (though, of course, you can still add additional functionality using Javascript).
equals vs Arrays.equals in Java
The Arrays.equals(array1, array2) :
check if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal.
The array1.equals(array2) :
compare the object to another object and return true only if the reference of the two object are equal as in the Object.equals()
How to convert Set to Array?
Using Set and converting it to an array is very similar to copying an Array...
So you can use the same methods for copying an array which is very easy in ES6
For example, you can use ...
Imagine you have this Set below:
const a = new Set(["Alireza", "Dezfoolian", "is", "a", "developer"]);
You can simply convert it using:
const b = [...a];
and the result is:
["Alireza", "Dezfoolian", "is", "a", "developer"]
An array and now you can use all methods that you can use for an array...
Other common ways of doing it:
const b = Array.from(a);
or using loops like:
const b = [];
a.forEach(v => b.push(v));
how to check and set max_allowed_packet mysql variable
goto cpanel and login as Main Admin or Super Administrator
find SSH/Shell Access ( you will find under the security tab of cpanel )
now give the username and password of Super Administrator as
rootorwhatyougavenote: do not give any username, cos, it needs permissionsonce your into console type
type '
mysql' and press enter now you find youself inmysql>/* and type here like */mysql> set global net_buffer_length=1000000;Query OK, 0 rows affected (0.00 sec)
mysql> set global max_allowed_packet=1000000000;Query OK, 0 rows affected (0.00 sec)
Now upload and enjoy!!!
windows batch file rename
I rename in code
echo off
setlocal EnableDelayedExpansion
for %%a in (*.txt) do (
REM echo %%a
set x=%%a
set mes=!x:~17,3!
if !mes!==JAN (
set mes=01
)
if !mes!==ENE (
set mes=01
)
if !mes!==FEB (
set mes=02
)
if !mes!==MAR (
set mes=03
)
if !mes!==APR (
set mes=04
)
if !mes!==MAY (
set mes=05
)
if !mes!==JUN (
set mes=06
)
if !mes!==JUL (
set mes=07
)
if !mes!==AUG (
set mes=08
)
if !mes!==SEP (
set mes=09
)
if !mes!==OCT (
set mes=10
)
if !mes!==NOV (
set mes=11
)
if !mes!==DEC (
set mes=12
)
ren %%a !x:~20,4!!mes!!x:~15,2!.txt
echo !x:~20,4!!mes!!x:~15,2!.txt
)
Displaying the Error Messages in Laravel after being Redirected from controller
A New Laravel Blade Error Directive comes to Laravel 5.8.13
// Before
@if ($errors->has('email'))
<span>{{ $errors->first('email') }}</span>
@endif
// After:
@error('email')
<span>{{ $message }}</span>
@enderror
How to create a DB link between two oracle instances
After creating the DB link, if the two instances are present in two different databases, then you need to setup a TNS entry on the A machine so that it resolve B. check out here
How can I escape a double quote inside double quotes?
Add "\" before double quote to escape it, instead of \
#! /bin/csh -f
set dbtable = balabala
set dbload = "load data local infile "\""'gfpoint.csv'"\"" into table $dbtable FIELDS TERMINATED BY ',' ENCLOSED BY '"\""' LINES TERMINATED BY "\""'\n'"\"" IGNORE 1 LINES"
echo $dbload
# load data local infile "'gfpoint.csv'" into table balabala FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY "''" IGNORE 1 LINES
How to import a JSON file in ECMAScript 6?
Adding to the other answers, in Node.js it is possible to use require to read JSON files even inside ES modules. I found this to be especially useful when reading files inside other packages, because it takes advantage of Node's own module resolution strategy to locate the file.
require in an ES module must be first created with createRequire.
Here is a complete example:
import { createRequire } from 'module';
const require = createRequire(import.meta.url);
const packageJson = require('typescript/package.json');
console.log(`You have TypeScript version ${packageJson.version} installed.`);
In a project with TypeScript installed, the code above will read and print the TypeScript version number from package.json.
set the iframe height automatically
If the sites are on separate domains, the calling page can't access the height of the iframe due to cross-browser domain restrictions. If you have access to both sites, you may be able to use the [document domain hack].1 Then anroesti's links should help.
How to count string occurrence in string?
/** Function that count occurrences of a substring in a string;
* @param {String} string The string
* @param {String} subString The sub string to search for
* @param {Boolean} [allowOverlapping] Optional. (Default:false)
*
* @author Vitim.us https://gist.github.com/victornpb/7736865
* @see Unit Test https://jsfiddle.net/Victornpb/5axuh96u/
* @see http://stackoverflow.com/questions/4009756/how-to-count-string-occurrence-in-string/7924240#7924240
*/
function occurrences(string, subString, allowOverlapping) {
string += "";
subString += "";
if (subString.length <= 0) return (string.length + 1);
var n = 0,
pos = 0,
step = allowOverlapping ? 1 : subString.length;
while (true) {
pos = string.indexOf(subString, pos);
if (pos >= 0) {
++n;
pos += step;
} else break;
}
return n;
}
Usage
occurrences("foofoofoo", "bar"); //0
occurrences("foofoofoo", "foo"); //3
occurrences("foofoofoo", "foofoo"); //1
allowOverlapping
occurrences("foofoofoo", "foofoo", true); //2
Matches:
foofoofoo
1 `----´
2 `----´
Unit Test
Benchmark
GistI've made a benchmark test and my function is more then 10 times faster then the regexp match function posted by gumbo. In my test string is 25 chars length. with 2 occurences of the character 'o'. I executed 1 000 000 times in Safari.
Safari 5.1
Benchmark> Total time execution: 5617 ms (regexp)
Benchmark> Total time execution: 881 ms (my function 6.4x faster)
Firefox 4
Benchmark> Total time execution: 8547 ms (Rexexp)
Benchmark> Total time execution: 634 ms (my function 13.5x faster)
Edit: changes I've made
cached substring length
added type-casting to string.
added optional 'allowOverlapping' parameter
fixed correct output for "" empty substring case.
Parsing XML in Python using ElementTree example
So I have ElementTree 1.2.6 on my box now, and ran the following code against the XML chunk you posted:
import elementtree.ElementTree as ET
tree = ET.parse("test.xml")
doc = tree.getroot()
thingy = doc.find('timeSeries')
print thingy.attrib
and got the following back:
{'name': 'NWIS Time Series Instantaneous Values'}
It appears to have found the timeSeries element without needing to use numerical indices.
What would be useful now is knowing what you mean when you say "it doesn't work." Since it works for me given the same input, it is unlikely that ElementTree is broken in some obvious way. Update your question with any error messages, backtraces, or anything you can provide to help us help you.
How to get WooCommerce order details
You can get all details by order object.
// Get $order object from order ID
$order = wc_get_order( $order_id );
// Now you have access to (see above)...
if ( $order ) {
// Get Order ID and Key
$order->get_id();
$order->get_order_key();
// Get Order Totals $0.00
$order->get_formatted_order_total();
$order->get_cart_tax();
$order->get_currency();
$order->get_discount_tax();
$order->get_discount_to_display();
$order->get_discount_total();
$order->get_fees();
$order->get_formatted_line_subtotal();
$order->get_shipping_tax();
$order->get_shipping_total();
$order->get_subtotal();
$order->get_subtotal_to_display();
$order->get_tax_location();
$order->get_tax_totals();
$order->get_taxes();
$order->get_total();
$order->get_total_discount();
$order->get_total_tax();
$order->get_total_refunded();
$order->get_total_tax_refunded();
$order->get_total_shipping_refunded();
$order->get_item_count_refunded();
$order->get_total_qty_refunded();
$order->get_qty_refunded_for_item();
$order->get_total_refunded_for_item();
$order->get_tax_refunded_for_item();
$order->get_total_tax_refunded_by_rate_id();
$order->get_remaining_refund_amount();
}
No server in windows>preferences
Follow the below steps:
1.Goto Help -> Install new Software
2.Give address http://download.eclipse.org/releases/oxygen and name as your choice.
3.Search for Java EE and choose 1.Eclipse Java EE Developer Tools
4.Search for JST and choose 2.JST Server Adapters 3.JST Server Adapters
5.Click next and accept the license agreement.
Find the server option in the window-->preferences and add server as you need
UIAlertView first deprecated IOS 9
UIAlertController * alert = [UIAlertController
alertControllerWithTitle:@"Are you sure you want to logout?"
message:@""
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* yesButton = [UIAlertAction
actionWithTitle:@"Logout"
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction * action)
{
}];
UIAlertAction* noButton = [UIAlertAction
actionWithTitle:@"Cancel"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action) {
//Handle no, thanks button
}];
[alert addAction:noButton];
[alert addAction:yesButton];
[self presentViewController:alert animated:YES completion:nil];
Get the selected option id with jQuery
var id = $(this).find('option:selected').attr('id');then you do whatever you want with selectedIndex
I've reedited my answer ... since selectedIndex isn't a good variable to give example...
Autoresize View When SubViews are Added
Yes, it is because you are using auto layout. Setting the view frame and resizing mask will not work.
You should read Working with Auto Layout Programmatically and Visual Format Language.
You will need to get the current constraints, add the text field, adjust the contraints for the text field, then add the correct constraints on the text field.
How to disable Hyper-V in command line?
you can use my script. paste code lines to notepad and save as vbs(for example switch_hypervisor.vbs)
Option Explicit
Dim backupfile
Dim record
Dim myshell
Dim appmyshell
Dim myresult
Dim myline
Dim makeactive
Dim makepassive
Dim reboot
record=""
Set myshell = WScript.CreateObject("WScript.Shell")
If WScript.Arguments.Length = 0 Then
Set appmyshell = CreateObject("Shell.Application")
appmyshell.ShellExecute "wscript.exe", """" & WScript.ScriptFullName & """ RunAsAdministrator", , "runas", 1
WScript.Quit
End if
Set backupfile = CreateObject("Scripting.FileSystemObject")
If Not (backupfile.FileExists("C:\bcdedit.bak")) Then
Set myresult = myshell.Exec("cmd /c bcdedit /export c:\bcdedit.bak")
End If
Set myresult = myshell.Exec("cmd /c bcdedit")
Do While Not myresult.StdOut.AtEndOfStream
myline = myresult.StdOut.ReadLine()
If myline="The boot configuration data store could not be opened." Then
record=""
exit do
End If
If Instr(myline, "identifier") > 0 Then
record=""
If Instr(myline, "{current}") > 0 Then
record="current"
End If
End If
If Instr(myline, "hypervisorlaunchtype") > 0 And record = "current" Then
If Instr(myline, "Auto") > 0 Then
record="1"
Exit Do
End If
If Instr(myline, "On") > 0 Then
record="1"
Exit Do
End If
If Instr(myline, "Off") > 0 Then
record="0"
Exit Do
End If
End If
Loop
If record="1" Then
makepassive = MsgBox ("Hypervisor status is active, do you want set to passive? ", vbYesNo, "Hypervisor")
Select Case makepassive
Case vbYes
myshell.run "cmd.exe /C bcdedit /set hypervisorlaunchtype off"
reboot = MsgBox ("Hypervisor chenged to passive; Computer must reboot. Reboot now? ", vbYesNo, "Hypervisor")
Select Case reboot
Case vbYes
myshell.run "cmd.exe /C shutdown /r /t 0"
End Select
Case vbNo
MsgBox("Not Changed")
End Select
End If
If record="0" Then
makeactive = MsgBox ("Hypervisor status is passive, do you want set active? ", vbYesNo, "Hypervisor")
Select Case makeactive
Case vbYes
myshell.run "cmd.exe /C bcdedit /set hypervisorlaunchtype auto"
reboot = MsgBox ("Hypervisor changed to active; Computer must reboot. Reboot now?", vbYesNo, "Hypervisor")
Select Case reboot
Case vbYes
myshell.run "cmd.exe /C shutdown /r /t 0"
End Select
Case vbNo
MsgBox("Not Changed")
End Select
End If
If record="" Then
MsgBox("Error: record can't find")
End If
How to get the EXIF data from a file using C#
Recently, I used this .NET Metadata API. I have also written a blog post about it, that shows reading, updating, and removing the EXIF data from images using C#.
using (Metadata metadata = new Metadata("image.jpg"))
{
IExif root = metadata.GetRootPackage() as IExif;
if (root != null && root.ExifPackage != null)
{
Console.WriteLine(root.ExifPackage.DateTime);
}
}
MySQL INSERT INTO ... VALUES and SELECT
try this
INSERT INTO TABLE1 (COL1 , COL2,COL3) values
('A STRING' , 5 , (select idTable2 from Table2) )
where ...
How do I prompt for Yes/No/Cancel input in a Linux shell script?
I suggest you use dialog...
Linux Apprentice: Improve Bash Shell Scripts Using Dialog
The dialog command enables the use of window boxes in shell scripts to make their use more interactive.
it's simple and easy to use, there's also a gnome version called gdialog that takes the exact same parameters, but shows it GUI style on X.
How to run vi on docker container?
To install within your Docker container you can run command
docker exec apt-get update && apt-get install -y vim
But this will be limited to the container in which vim is installed. To make it available to all the containers, edit the Dockerfile and add
RUN apt-get update && apt-get install -y vim
or you can also extend the image in the new Dockerfile and add above command. Eg.
FROM < image name >
RUN apt-get update && apt-get install -y vim
Android WebView, how to handle redirects in app instead of opening a browser
Create a class that implements webviewclient and add the following code that allows ovveriding the url string as shown below. You can see these [example][1]
public class myWebClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
On your constructor, create a webview object as shown below.
web = new WebView(this); web.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
Then add the following code to perform loading of urls inside your app
WebSettings settings=web.getSettings();
settings.setJavaScriptEnabled(true);
web.loadUrl("http://www.facebook.com");
web.setWebViewClient(new myWebClient());
web.setWebChromeClient(new WebChromeClient() {
//
//
}
How to Update a Component without refreshing full page - Angular
To update component
@Injectable()
export class LoginService{
private isUserLoggedIn: boolean = false;
public setLoggedInUser(flag) { // you need set header flag true false from other components on basis of your requirements, header component will be visible as per this flag then
this.isUserLoggedIn= flag;
}
public getUserLoggedIn(): boolean {
return this.isUserLoggedIn;
}
Login Component ts
Login Component{
constructor(public service: LoginService){}
public login(){
service.setLoggedInUser(true);
}
}
Inside Header component
Header Component ts
HeaderComponent {
constructor(public service: LoginService){}
public getUserLoggedIn(): boolean { return this.service.getUserLoggedIn()}
}
template of header component: Check for user sign in here
<button *ngIf="getUserLoggedIn()">Sign Out</button>
<button *ngIf="!getUserLoggedIn()">Sign In</button>
You can use many approach like show hide using ngIf
App Component ts
AppComponent {
public showHeader: boolean = true;
}
App Component html
<div *ngIf='showHeader'> // you show hide on basis of this ngIf and header component always get visible with it's lifecycle hook ngOnInit() called all the time when it get visible
<app-header></app-header>
</div>
<router-outlet></router-outlet>
<app-footer></app-footer>
You can also use service
@Injectable()
export class AppService {
private showHeader: boolean = false;
public setHeader(flag) { // you need set header flag true false from other components on basis of your requirements, header component will be visible as per this flag then
this.showHeader = flag;
}
public getHeader(): boolean {
return this.showHeader;
}
}
App Component.ts
AppComponent {
constructor(public service: AppService){}
}
App Component.html
<div *ngIf='service.showHeader'> // you show hide on basis of this ngIf and header component always get visible with it's lifecycle hook ngOnInit() called all the time when it get visible
<app-header></app-header>
</div>
<router-outlet></router-outlet>
<app-footer></app-footer>
Absolute Positioning & Text Alignment
Maybe specifying a width would work. When you position:absolute an element, it's width will shrink to the contents I believe.
Angular JS Uncaught Error: [$injector:modulerr]
Just throwing this in in case it helps, I had this issue and the reason for me was because when I bundled my Angular stuff I referenced the main app file as "AngularWebApp" instead of "AngularWebApp.js", hope this helps.
How to hide columns in an ASP.NET GridView with auto-generated columns?
You have to perform the GridView1.Columns[i].Visible = false; after the grid has been databound.
Storing JSON in database vs. having a new column for each key
some time joins on the table will be an overhead. lets say for OLAP. if i have two tables one is ORDERS table and other one is ORDER_DETAILS. For getting all the order details we have to join two tables this will make the query slower when no of rows in the tables increase lets say in millions or so.. left/right join is too slower than inner join. I Think if we add JSON string/Object in the respective ORDERS entry JOIN will be avoided. add report generation will be faster...
Appending a line break to an output file in a shell script
I'm betting the problem is that Cygwin is writing Unix line endings (LF) to the file, and you're opening it with a program that expects Windows line-endings (CRLF). To determine if this is the case — and for a bit of a hackish workaround — try:
echo "`date` User `whoami` started the script."$'\r' >> output.log
(where the $'\r' at the end is an extra carriage-return; it, plus the Unix line ending, will result in a Windows line ending).
How do I trim leading/trailing whitespace in a standard way?
Here is my attempt at a simple, yet correct in-place trim function.
void trim(char *str)
{
int i;
int begin = 0;
int end = strlen(str) - 1;
while (isspace((unsigned char) str[begin]))
begin++;
while ((end >= begin) && isspace((unsigned char) str[end]))
end--;
// Shift all characters back to the start of the string array.
for (i = begin; i <= end; i++)
str[i - begin] = str[i];
str[i - begin] = '\0'; // Null terminate string.
}
How to lock orientation of one view controller to portrait mode only in Swift
Swift 3 & 4
Set the supportedInterfaceOrientations property of specific UIViewControllers like this:
class MyViewController: UIViewController {
var orientations = UIInterfaceOrientationMask.portrait //or what orientation you want
override var supportedInterfaceOrientations : UIInterfaceOrientationMask {
get { return self.orientations }
set { self.orientations = newValue }
}
override func viewDidLoad() {
super.viewDidLoad()
}
//...
}
UPDATE
This solution only works when your viewController is not embedded in UINavigationController, because the orientation inherits from parent viewController.
For this case, you can create a subclass of UINavigationViewController and set these properties on it.
MySQL query String contains
WHERE `column` LIKE '%$needle%'
Android emulator: How to monitor network traffic?
It is now possible to use Wireshark directly to capture Android emulator traffic. There is an extcap plugin called androiddump which makes it possible. You need to have a tcpdump executable in the system image running on the emulator (most current images have it, tested with API 24 and API 27 images) and adbd running as root on the host (just run adb root). In the list of the available interfaces in Wireshark (Qt version only, the deprecated GTK+ doesn't have it) or the list shown with tshark -D there should be several Android interfaces allowing to sniff Bluetooth, Logcat, or Wifi traffic, e.g.:
android-wifi-tcpdump-emulator-5554 (Android WiFi Android_SDK_built_for_x86 emulator-5554)
How to find the size of an int[]?
You can't do that for a dynamically allocated array (or a pointer). For static arrays, you can use sizeof(array) to get the whole array size in bytes and divide it by the size of each element:
#define COUNTOF(x) (sizeof(x)/sizeof(*x))
To get the size of a dynamic array, you have to keep track of it manually and pass it around with it, or terminate it with a sentinel value (like '\0' in null terminated strings).
Update: I realized that your question is tagged C++ and not C. You should definitely consider using std::vector instead of arrays in C++ if you want to pass things around:
std::vector<int> v;
v.push_back(1);
v.push_back(2);
std::cout << v.size() << std::endl; // prints 2
Limit the output of the TOP command to a specific process name
Using the approach mentioned in the answer by Rick Byers:
top -p `pgrep java | paste -sd "," -`
but I had more than 20 processes running so following command can be helpful for someone who encounter a similar situation.
top -p `pgrep java | head -n 20 | paste -sd "," -`
pgrep gets the list of processes with given name - java in this case. head is used to get first 20 pids because top cannot handle more than 20 pids when using -p argument. Finally paste joins the list of pids with ','.
You can control the process name you are looking for in the above command and the number of processes with that name you are interested to watch. You can ignore the head -n 20 part if the number of your processes with the given name is less than 20.
What is the C# version of VB.net's InputDialog?
There is no such thing: I recommend to write it for yourself and use it whenever you need.
Show values from a MySQL database table inside a HTML table on a webpage
Surely a better solution would by dynamic so that it would work for any query without having to know the column names?
If so, try this (obviously the query should match your database):
// You'll need to put your db connection details in here.
$conn = new mysqli($server_hostname, $server_username, $server_password, $server_database);
// Run the query.
$result = $conn->query("SELECT * FROM table LIMIT 10");
// Get the result in to a more usable format.
$query = array();
while($query[] = mysqli_fetch_assoc($result));
array_pop($query);
// Output a dynamic table of the results with column headings.
echo '<table border="1">';
echo '<tr>';
foreach($query[0] as $key => $value) {
echo '<td>';
echo $key;
echo '</td>';
}
echo '</tr>';
foreach($query as $row) {
echo '<tr>';
foreach($row as $column) {
echo '<td>';
echo $column;
echo '</td>';
}
echo '</tr>';
}
echo '</table>';
Taken from here: https://www.antropy.co.uk/blog/handy-php-snippets/
Cannot implicitly convert type 'System.DateTime?' to 'System.DateTime'. An explicit conversion exists
The problem is that you are passing a nullable type to a non-nullable type.
You can do any of the following solution:
A. Declare your dt as nullable
DateTime? dt = dateTime;
B. Use Value property of the the DateTime? datetime
DateTime dt = datetime.Value;
C. Cast it
DateTime dt = (DateTime) datetime;
select rows in sql with latest date for each ID repeated multiple times
One way is:
select table.*
from table
join
(
select ID, max(Date) as max_dt
from table
group by ID
) t
on table.ID= t.ID and table.Date = t.max_dt
Note that if you have multiple equally higher dates for same ID, then you will get all those rows in result
How to randomize (or permute) a dataframe rowwise and columnwise?
You can also "sample" the same number of items in your data frame with something like this:
nr<-dim(M)[1]
random_M = M[sample.int(nr),]