This is very simple in LinQ... You can use the select statement to get an Enumerable of properties of the objects.
var mySkus = myLines.Select(x => x.Sku);
Or if you want it as an Array just do...
var mySkus = myLines.Select(x => x.Sku).ToArray();
(parent window)
<html>
<script language="javascript">
function openWindow() {
window.open("target.html","_blank","height=200,width=400, status=yes,toolbar=no,menubar=no,location=no");
}
</script>
<body>
<form name=frm>
<input id=text1 type=text>
<input type=button onclick="javascript:openWindow()" value="Open window..">
</form>
</body>
</html>
(child window)
<html>
<script language="javascript">
function changeParent() {
window.opener.document.getElementById('text1').value="Value changed..";
window.close();
}
</script>
<body>
<form>
<input type=button onclick="javascript:changeParent()" value="Change opener's textbox's value..">
</form>
</body>
</html>
I had this problem when running some script in cygwin. Fixed by running dos2unix
on the script, with proper description of problem and solution given in that answer
From the MySQL documentation (that you already have read as I see):
1206 (ER_LOCK_TABLE_FULL)
The total number of locks exceeds the lock table size. To avoid this error, increase the value of innodb_buffer_pool_size. Within an individual application, a workaround may be to break a large operation into smaller pieces. For example, if the error occurs for a large INSERT, perform several smaller INSERT operations.
If increasing innodb_buffer_pool_size doesnt help, then just follow the indication on the bolded part and split up your INSERT into 3. Skip the UNIONs and make 3 INSERTs, each with a JOIN to the topThreetransit table.
I would check the "End of File" flag:
If temp_rst1.EOF Or temp_rst2.EOF Then MsgBox "null"
In Servlet do:
String selectedRole = "rat"; // Or "cat" or whatever you'd like.
request.setAttribute("selectedRole", selectedRole);
Then in JSP do:
<select name="roleName">
<c:forEach items="${roleNames}" var="role">
<option value="${role}" ${role == selectedRole ? 'selected' : ''}>${role}</option>
</c:forEach>
</select>
It will print the selected
attribute of the HTML <option>
element so that you end up like:
<select name="roleName">
<option value="cat">cat</option>
<option value="rat" selected>rat</option>
<option value="unicorn">unicorn</option>
</select>
Apart from the problem: this is not a combo box. This is a dropdown. A combo box is an editable dropdown.
But if you just want to tell the difference between an odd iteration and an even iteration, this works just fine:
If i Mod 2 > 0 then 'this is an odd
'Do Something
Else 'it is even
'Do Something Else
End If
In the case where you have multiple variables containing the arguments for a command you're running, and not just a single string, you should not use eval directly, as it will fail in the following case:
function echo_arguments() {
echo "Argument 1: $1"
echo "Argument 2: $2"
echo "Argument 3: $3"
echo "Argument 4: $4"
}
# Note we are passing 3 arguments to `echo_arguments`, not 4
eval echo_arguments arg1 arg2 "Some arg"
Result:
Argument 1: arg1
Argument 2: arg2
Argument 3: Some
Argument 4: arg
Note that even though "Some arg" was passed as a single argument, eval
read it as two.
Instead, you can just use the string as the command itself:
# The regular bash eval works by jamming all its arguments into a string then
# evaluating the string. This function treats its arguments as individual
# arguments to be passed to the command being run.
function eval_command() {
"$@";
}
Note the difference between the output of eval
and the new eval_command
function:
eval_command echo_arguments arg1 arg2 "Some arg"
Result:
Argument 1: arg1
Argument 2: arg2
Argument 3: Some arg
Argument 4:
For strings like that, for me the most comfortable way to do it is doubling the ' or ", as explained in the MySQL manual:
There are several ways to include quote characters within a string:
A “'” inside a string quoted with “'” may be written as “''”. A “"” inside a string quoted with “"” may be written as “""”. Precede the quote character by an escape character (“\”). A “'” inside a string quoted with “"” needs no special treatment and need not be doubled or escaped. In the same way, “"” inside a
Strings quoted with “'” need no special treatment.
It is from http://dev.mysql.com/doc/refman/5.0/en/string-literals.html.
"net send" is a command using a background service called "messenger". This service has been removed from Windows 7. ie You cannot use 'net send' on Vista nor Win7 / Win8.
Pity though , I loved using it.
There is alternatives, but that requires you to download and install software on each pc you want to use, this software runs as background services, and i would advise one to be very very very very careful of using these kind of software as they can potentially cause seriously damage one's system or impair the systems securities.
winsent innocenti / winsent messenger
****This command is risky because of what is stated above***
Probably because for both sides (B and C) only the type is relevant, not the implementation. In your example
public class A<B extends C>{}
B can be an interface as well. "extends" is used to define sub-interfaces as well as sub-classes.
interface IntfSub extends IntfSuper {}
class ClzSub extends ClzSuper {}
I usually think of 'Sub extends Super' as 'Sub is like Super, but with additional capabilities', and 'Clz implements Intf' as 'Clz is a realization of Intf'. In your example, this would match: B is like C, but with additional capabilities. The capabilities are relevant here, not the realization.
How about exporting the variable, but only inside the subshell?:
(export FOO=bar && somecommand someargs | somecommand2)
Keith has a point, to unconditionally execute the commands, do this:
(export FOO=bar; somecommand someargs | somecommand2)
You can also paste mayankcpdixit's code in onAnimationComplete
option :
// ...
var myDoughnutChart = new Chart(ctx).Doughnut(data, {
onAnimationComplete: function() {
ctx.fillText(data[0].value + "%", 100 - 20, 100, 200);
}
});
Text will be shown after animation
If you paste
A.do() {
if (condition1) {
X.doSomething
} else if (condition2) {
Y.doSomethingElse
} else {
donotDoAnything
}
}
onto https://www.zenuml.com. It will generate a diagram for you.
It looks like psexec -h
is the way to do this:
-h If the target system is Windows Vista or higher, has the process
run with the account's elevated token, if available.
Which... doesn't seem to be listed in the online documentation in Sysinternals - PsExec.
But it works on my machine.
$('#hello').hide('slide', {direction: 'left'}, 1000);
requires the jQuery-ui library. See http://www.jqueryui.com
You may use Upsert with $setOnInsert operator.
db.Table.update({noExist: true}, {"$setOnInsert": {xxxYourDocumentxxx}}, {upsert: true})
I've run into this problem a few times opening old projects that include other Android libraries. What works for me is to:
move Android to the top in the Order and Export tab and deselecting it.
Yes, this really makes the difference. Maybe it's time for me to ditch ADT for Android Studio!
If you want to re-use the connection then you must consume content stream completely after every use as follows :
EntityUtils.consume(response.getEntity())
Note : you need to consume the content stream even if the status code is not 200. Not doing so will raise the following on next use :
Exception in thread "main" java.lang.IllegalStateException: Invalid use of SingleClientConnManager: connection still allocated. Make sure to release the connection before allocating another one.
If it's a one time use, then simply closing the connection will release all the resources associated with it.
I'd probably do something like this, using the find function that takes an index parameter:
def find_nth(s, x, n):
i = -1
for _ in range(n):
i = s.find(x, i + len(x))
if i == -1:
break
return i
print find_nth('bananabanana', 'an', 3)
It's not particularly Pythonic I guess, but it's simple. You could do it using recursion instead:
def find_nth(s, x, n, i = 0):
i = s.find(x, i)
if n == 1 or i == -1:
return i
else:
return find_nth(s, x, n - 1, i + len(x))
print find_nth('bananabanana', 'an', 3)
It's a functional way to solve it, but I don't know if that makes it more Pythonic.
According to HTML 5.2:
When specified on an element, [the
hidden
attribute] indicates that the element is not yet, or is no longer, directly relevant to the page’s current state, or that it is being used to declare content to be reused by other parts of the page as opposed to being directly accessed by the user.
Examples include a tab list where some panels are not exposed, or a log-in screen that goes away after a user logs in. I like to call these things “temporally relevant” i.e. they are relevant based on timing.
On the other hand, ARIA 1.1 says:
[The
aria-hidden
state] indicates whether an element is exposed to the accessibility API.
In other words, elements with aria-hidden="true"
are removed from the accessibility tree, which most assistive technology honors, and elements with aria-hidden="false"
will definitely be exposed to the tree. Elements without the aria-hidden
attribute are in the "undefined (default)" state, which means user agents should expose it to the tree based on its rendering. E.g. a user agent may decide to remove it if its text color matches its background color.
Now let’s compare semantics. It’s appropriate to use hidden
, but not aria-hidden
, for an element that is not yet “temporally relevant”, but that might become relevant in the future (in which case you would use dynamic scripts to remove the hidden
attribute). Conversely, it’s appropriate to use aria-hidden
, but not hidden
, on an element that is always relevant, but with which you don’t want to clutter the accessibility API; such elements might include “visual flair”, like icons and/or imagery that are not essential for the user to consume.
The semantics have predictable effects in browsers/user agents. The reason I make a distinction is that user agent behavior is recommended, but not required by the specifications.
The hidden
attribute should hide an element from all presentations, including printers and screen readers (assuming these devices honor the HTML specs). If you want to remove an element from the accessibility tree as well as visual media, hidden
would do the trick. However, do not use hidden
just because you want this effect. Ask yourself if hidden
is semantically correct first (see above). If hidden
is not semantically correct, but you still want to visually hide the element, you can use other techniques such as CSS.
Elements with aria-hidden="true"
are not exposed to the accessibility tree, so for example, screen readers won’t announce them. This technique should be used carefully, as it will provide different experiences to different users: accessible user agents won’t announce/render them, but they are still rendered on visual agents. This can be a good thing when done correctly, but it has the potential to be abused.
Lastly, there is a difference in syntax between the two attributes.
hidden
is a boolean attribute, meaning if the attribute is present it is true—regardless of whatever value it might have—and if the attribute is absent it is false. For the true case, the best practice is to either use no value at all (<div hidden>...</div>
), or the empty string value (<div hidden="">...</div>
). I would not recommend hidden="true"
because someone reading/updating your code might infer that hidden="false"
would have the opposite effect, which is simply incorrect.
aria-hidden
, by contrast, is an enumerated attribute, allowing one of a finite list of values. If the aria-hidden
attribute is present, its value must be either "true"
or "false"
. If you want the "undefined (default)" state, remove the attribute altogether.
Further reading: https://github.com/chharvey/chharvey.github.io/wiki/Hidden-Content
controlName.CssClass="CSS Class Name";
working example follows below
txtBank.CssClass = "csError";
This post may help. https://css-tricks.com/snippets/html/responsive-meta-tag/ It gives a full description on the meta tags and its different attributes.
In Fragment use isAdded()
It will return true if the fragment is currently attached to Activity.
If you want to check inside the Activity
Fragment fragment = new MyFragment();
if(fragment.getActivity()!=null)
{ // your code here}
else{
//do something
}
Hope it will help someone
In some cases this also occurs if you have table hints and you have spaces between WITH clause and your hint, so best to type it like:
SELECT Column1 FROM Table1 t1 WITH(NOLOCK)
INNER JOIN Table2 t2 WITH(NOLOCK) ON t1.Column1 = t2.Column1
And not:
SELECT Column1 FROM Table1 t1 WITH (NOLOCK)
INNER JOIN Table2 t2 WITH (NOLOCK) ON t1.Column1 = t2.Column1
/^[\w-_.]*$/
What is means By:
^ Start of string
[......] Match characters inside
\w Any word character so 0-9 a-z A-Z
-_. Matched by charecter - and _ and .
Zero or more of pattern or unlimited $ End of string If you want to limit the amount of characters:
/^[\w-_.]{0,5}$/
{0,5} Means 0-5 Numbers & characters
I have faced the same issue. I have changed the maven-assembly-plugin
to 3.1.1
from 2.5.3
in POM.xml
Proposed version should be done under plugin section. enter code here artifact Id for maven-assembly-plugin
Just a quick note (and possible cause).
You can have a perfectly correct VirtualHost
setup with _default_:443
etc. in your Apache .conf file.
But... If there is even one .conf file enabled with incorrect settings that also listens to port 443, then it will bring the whole SSL system down.
Therefore, if you are sure your .conf file is correct, try disabling the other site .conf files in sites-enabled
.
Actually - Patrick's code sort of worked for me as well. The correct way to do it would be along the lines of this:
Note: there's a bit of jquery ahead:
if ($.browser.msie == false) {
var h = (document.getElementById("iframeID").contentDocument.body.offsetHeight);
} else {
var h = (document.getElementById("iframeID").Document.body.scrollHeight);
}
Actually MySQL provide a lot of easy to use function in daily life without more effort from user side-
NOW() it produce date and time both in current scenario whereas CURDATE() produce date only, CURTIME() display time only, we can use one of them according to our need with CAST or merge other calculation it, MySQL rich in these type of function.
NOTE:- You can see the difference using query select NOW() as NOWDATETIME, CURDATE() as NOWDATE, CURTIME() as NOWTIME ;
Install Java 7u21 from here: http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR
set these variables:
export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/Contents/Home"
export PATH=$JAVA_HOME/bin:$PATH
Run your app and fun :)
(Minor update: put variable value in quote)
If you want to insert text inside your EditText view that stays there after the field is selected (unlike how hint behaves), do this:
In Java:
// Cast Your EditText as a TextView
((TextView) findViewById(R.id.email)).setText("your Text")
In Kotlin:
// Cast your EditText into a TextView
// Like this
(findViewById(R.id.email) as TextView).text = "Your Text"
// Or simply like this
findViewById<TextView>(R.id.email).text = "Your Text"
People wouldn't like to see a wrong commit and a revert commit to undo changes of the wrong commit. This pollutes commit history.
Here is a simple way for removing the wrong commit instead of undoing changes with a revert commit.
git checkout my-pull-request-branch
git rebase -i HEAD~n
// where n
is the number of last commits you want to include in interactive
rebase.
pick
with drop
for commits you want to discard.git push --force
It looks like placing the click event directly on the button is causing the problem. For some reason it can't find the function. Not sure why...
If you attach the event handler in the javascript, it does work however.
See it here: http://jsfiddle.net/WfBRr/7/
<button id="display-text" type="button">Display text of all options</button>
document.getElementById('display-text').onclick = function () {
var x = document.getElementById("mySelect");
var txt = "All options: ";
var i;
for (i = 0; i < x.length; i++) {
txt = txt + "\n" + x.options[i].value;
}
alert(txt);
}
You're looking for the JavaScriptSerializer
class, which is used internally by JsonResult:
string json = new JavaScriptSerializer().Serialize(jsonResult.Data);
puts
call the to_s
of each argument and adds a new line to each string, if it does not end with new line.
print
just output each argument by calling their to_s
.
for example:
puts "one two"
:
one two
{new line}
puts "one two\n"
:
one two
{new line} #puts will not add a new line to the result, since the string ends with a new line
print "one two"
:
one two
print "one two\n"
:
one two
{new line}
And there is another way to output: p
For each object, directly writes obj.inspect followed by a newline to the program’s standard output.
It is helpful to output debugging message.
p "aa\n\t"
: aa\n\t
after installing the 1.7jdk from oracle, i changed my bash scripts to add:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_13.jdk/Contents/Home
and then running java -version
showed the right version.
https://adoptopenjdk.net currently supports all distributions of JDK from version 8 onwards. For example https://adoptopenjdk.net/releases.html#x64_win
Here's an example of how I was able to use JDK version 8 with sdkmanager and much more: https://travis-ci.com/mmcc007/screenshots/builds/109365628
For JDK 9 (and I think 10, and possibly 11, but not 12 and beyond), the following should work to get sdkmanager working:
export SDKMANAGER_OPTS="--add-modules java.se.ee"
sdkmanager --list
FOR the best performance, use specific column name instead of * - for example:
SELECT TOP 1 <columnName>
FROM <tableName>
This is optimal because, instead of returning the whole list of columns, it is returning just one. That can save some time.
Also, returning just first row if there are any values, makes it even faster. Actually you got just one value as the result - if there are any rows, or no value if there is no rows.
If you use the table in distributed manner, which is most probably the case, than transporting just one value from the server to the client is much faster.
You also should choose wisely among all the columns to get data from a column which can take as less resource as possible.
Because it treats 1 and 3 as integers, therefore rounding the result down to 0, so that it is an integer.
To get the result you are looking for, explicitly tell java that the numbers are doubles like so:
double g = 1.0/3.0;
UseParNewGC usually knowns as "parallel young generation collector" is same in all ways as the parallel garbage collector (-XX:+UseParallelGC), except that its more sophiscated and effiecient. Also it can be used with a "concurrent low pause collector".
See Java GC FAQ, question 22 for more information.
Note that there are some known bugs with UseParNewGC
You should use the sumif function in Excel:
=SUMIF(A5:C10;"Text_to_find";C5:C10)
This function takes a range like this square A5:C10 then you have some text to find this text can be in A or B then it will add the number from the C-row.
I'm using the following configuration:
#site.yml:
- name: Example play
hosts: all
remote_user: ansible
become: yes
become_method: sudo
vars:
ansible_ssh_private_key_file: "/home/ansible/.ssh/id_rsa"
If you have Ubuntu 20.04 LTS (Focal Fossa) you can install python-is-python3
:
sudo apt install python-is-python3
which replaces the symlink in /usr/bin/python
to point to /usr/bin/python3
.
An one nice oneliner as an extra. Using git grep.
git grep -lz 'subdomainA.example.com' | xargs -0 perl -i'' -pE "s/subdomainA.example.com/subdomainB.example.com/g"
You need to use BLOB, there's TINY, MEDIUM, LONG, and just BLOB, as with other types, choose one according to your size needs.
TINYBLOB 255
BLOB 65535
MEDIUMBLOB 16777215
LONGBLOB 4294967295
(in bytes)
The insert statement would be fairly normal. You need to read the file using fread
and then addslashes
to it.
try this
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<style>_x000D_
table, th, td {_x000D_
border: 1px solid black;_x000D_
}_x000D_
</style>_x000D_
</head>_x000D_
<body>_x000D_
_x000D_
<table style="width:50%;">_x000D_
<tr>_x000D_
<th>Month</th>_x000D_
<th>Savings</th>_x000D_
</tr>_x000D_
<tr style="height:100px">_x000D_
<td valign="top">January</td>_x000D_
<td valign="bottom">$100</td>_x000D_
</tr>_x000D_
</table>_x000D_
_x000D_
<p><b>Note:</b> The valign attribute is not supported in HTML5. Use CSS instead.</p>_x000D_
_x000D_
</body>_x000D_
</html>
_x000D_
use valign="top" for td style
If any windows form(child form) is been opened from a new thread of Main window(parent form) then its not possible to hold the sub window to the center of main window hence we need to fix the position of the sub window manually by means of X and Y co-ordinates.
In the properties of Subwindow change the "StartPosition" to be "Manual"
private void SomeFunction()
{
Thread m_Thread = new Thread(LoadingUIForm);
m_Thread.Start();
OtherParallelFunction();
m_Thread.Abort();
}
private void LoadingUIForm()
{
m_LoadingWindow = new LoadingForm(this);
m_LoadingWindow.ShowDialog();
}
public LoadingForm(Control m_Parent)
{
InitializeComponent();
this.Location = new Point( m_Parent.Location.X+(m_Parent.Size.Width/2)-(this.Size.Width/2),
m_Parent.Location.Y+(m_Parent.Size.Height/2)-(this.Size.Height/2)
);
}
Here the co-ordinates of center of parent is calculated as well as the subwindow is kept exactly at the center of the parent by calculating its own center by (this.height/2) and (this.width/2) this function can be further taken for parent relocated events also.
On a supported Mac, run:
brew install --cask docker
Then launch the Docker app. Click next. It will ask for privileged access. Confirm. A whale icon should appear in the top bar. Click it and wait for "Docker is running" to appear.
You should be able to run docker
commands now:
docker ps
Because docker is a system-level package, you cannot install it using brew install
, and must use --cask
instead.
Note: This solution only works for Macs whose CPUs support virtualization, which may not include old Macs.
Here it was caused by avast antivirus. You can disable the avast firewall and let only windows firewall active.
Your debut
and fin
values are floating point values, not integers, because taille
is a float.
Make those values integers instead:
item = plateau[int(debut):int(fin)]
Alternatively, make taille
an integer:
taille = int(sqrt(len(plateau)))
This one worked, double quotes when $user and $password are outside single quotes. Single quotes when inside a single quote statement.
mysql --user="$user" --password="$password" --database="$user" --execute='DROP DATABASE '$user'; CREATE DATABASE '$user';'
As Pekka stated above
foreach ($array as $key => $value)
Also you might want to try a recursive function
displayRecursiveResults($site);
function displayRecursiveResults($arrayObject) {
foreach($arrayObject as $key=>$data) {
if(is_array($data)) {
displayRecursiveResults($data);
} elseif(is_object($data)) {
displayRecursiveResults($data);
} else {
echo "Key: ".$key." Data: ".$data."<br />";
}
}
}
Edit (2020.12.28): GitHub change default master branch to main branch since October 2020. See https://github.com/github/renaming
Update March 2013
Git 1.8.2 added the possibility to track branches.
"
git submodule
" started learning a new mode to integrate with the tip of the remote branch (as opposed to integrating with the commit recorded in the superproject's gitlink).
# add submodule to track master branch
git submodule add -b master [URL to Git repo];
# update your submodule
git submodule update --remote
If you had a submodule already present you now wish would track a branch, see "how to make an existing submodule track a branch".
Also see Vogella's tutorial on submodules for general information on submodules.
Note:
git submodule add -b . [URL to Git repo];
^^^
A special value of
.
is used to indicate that the name of the branch in the submodule should be the same name as the current branch in the current repository.
See commit b928922727d6691a3bdc28160f93f25712c565f6:
submodule add
: If --branch
is given, record it in .gitmodules
This allows you to easily record a
submodule.<name>.branch
option in.gitmodules
when you add a new submodule. With this patch,
$ git submodule add -b <branch> <repository> [<path>]
$ git config -f .gitmodules submodule.<path>.branch <branch>
reduces to
$ git submodule add -b <branch> <repository> [<path>]
This means that future calls to
$ git submodule update --remote ...
will get updates from the same branch that you used to initialize the submodule, which is usually what you want.
Signed-off-by: W. Trevor King [email protected]
Original answer (February 2012):
A submodule is a single commit referenced by a parent repo.
Since it is a Git repo on its own, the "history of all commits" is accessible through a git log
within that submodule.
So for a parent to track automatically the latest commit of a given branch of a submodule, it would need to:
gitslave (that you already looked at) seems to be the best fit, including for the commit operation.
It is a little annoying to make changes to the submodule due to the requirement to check out onto the correct submodule branch, make the change, commit, and then go into the superproject and commit the commit (or at least record the new location of the submodule).
Other alternatives are detailed here.
I would like to improve the solution proposed by Amit. I'm utilizing the given resources without adding additional shapes
or Views
. I'm giving CardView
a background color and then nested layout, white color to overprint yet with some leftMargin
...
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
card_view:cardElevation="2dp"
card_view:cardBackgroundColor="@color/some_color"
card_view:cardCornerRadius="5dp">
<!-- The left margin decides the width of the border -->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="16dp"
android:layout_marginLeft="5dp"
android:background="#fff"
android:orientation="vertical">
<TextView
style="@style/Base.TextAppearance.AppCompat.Headline"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Title" />
<TextView
style="@style/Base.TextAppearance.AppCompat.Body1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Content here" />
</LinearLayout>
</android.support.v7.widget.CardView>
You can use the random functionality included within the additions to the standard library (TR1). Or you can use the same old technique that works in plain C:
25 + ( std::rand() % ( 63 - 25 + 1 ) )
You can save the struct into a map by matching the struct Key
and Value
components to their fictive key and value parts on the map:
mapConfig := map[string]string{}
for _, v := range myconfig {
mapConfig[v.Key] = v.Value
}
Then using the golang comma ok idiom you can test for the key presence:
if v, ok := mapConfig["key1"]; ok {
fmt.Printf("%s exists", v)
}
in Swift 3.x:
override func viewWillAppear(_ animated: Bool) {
UIApplication.shared.isStatusBarHidden = true
}
Just another approach:
SELECT col1 * 1.0 / col2 FROM tbl1
Multiplying by 1.0 turns an integer into a float numeric(13,1) and so works like a typecast, but most probably it is slower than that.
A slightly shorter variation suggested by Aleksandr Fedorenko in a comment:
SELECT col1 * 1. / col2 FROM tbl1
The effect would be basically the same. The only difference is that the multiplication result in this case would be numeric(12,0).
Principal advantage: less wordy than other approaches.
The assertion libraries in Mocha work by throwing an error if the assertion was not correct. Throwing an error results in a rejected promise, even when thrown in the executor function provided to the catch
method.
.catch((error) => {
assert.isNotOk(error,'Promise error');
done();
});
In the above code the error
objected evaluates to true
so the assertion library throws an error... which is never caught. As a result of the error the done
method is never called. Mocha's done
callback accepts these errors, so you can simply end all promise chains in Mocha with .then(done,done)
. This ensures that the done method is always called and the error would be reported the same way as when Mocha catches the assertion's error in synchronous code.
it('should transition with the correct event', (done) => {
const cFSM = new CharacterFSM({}, emitter, transitions);
let timeout = null;
let resolved = false;
new Promise((resolve, reject) => {
emitter.once('action', resolve);
emitter.emit('done', {});
timeout = setTimeout(() => {
if (!resolved) {
reject('Timedout!');
}
clearTimeout(timeout);
}, 100);
}).then(((state) => {
resolved = true;
assert(state.action === 'DONE', 'should change state');
})).then(done,done);
});
I give credit to this article for the idea of using .then(done,done) when testing promises in Mocha.
I prefer python -m json.tool
which seems to be available per default on most *nix operating systems per default.
$ echo '{"foo":1, "bar":2}' | python -m json.tool
{
"bar": 2,
"foo": 1
}
Note: Depending on your version of python, all keys might get sorted alphabetically, which can or can not be a good thing. With python 2 it was the default to sort the keys, while in python 3.5+ they are no longer sorted automatically, but you have the option to sort by key explicitly:
$ echo '{"foo":1, "bar":2}' | python3 -m json.tool --sort-keys
{
"bar": 2,
"foo": 1
}
Also, some very interesting information further on lists vs. arrays in Python ~> Python List vs. Array - when to use?
It could be noted that once I convert my arrays into a list before saving it in a JSON file, in my deployment right now anyways, once I read that JSON file for use later, I can continue to use it in a list form (as opposed to converting it back to an array).
AND actually looks nicer (in my opinion) on the screen as a list (comma seperated) vs. an array (not-comma seperated) this way.
Using @travelingbones's .tolist() method above, I've been using as such (catching a few errors I've found too):
SAVE DICTIONARY
def writeDict(values, name):
writeName = DIR+name+'.json'
with open(writeName, "w") as outfile:
json.dump(values, outfile)
READ DICTIONARY
def readDict(name):
readName = DIR+name+'.json'
try:
with open(readName, "r") as infile:
dictValues = json.load(infile)
return(dictValues)
except IOError as e:
print(e)
return('None')
except ValueError as e:
print(e)
return('None')
Hope this helps!
So many solutions, but my favourite is still missing:
>>> import numpy as np
>>> arr = np.array([1,2,3,4,5])
a numpy array is not too different from a list (in this use case), except that you can treat arrays like numbers:
>>> ( arr[:-1] + arr[1:] ) / 2.0
[ 1.5 2.5 3.5 4.5]
Done!
explanation
The fancy indices mean this: [1:]
includes all elements from 1 to the end (thus omitting element 0), and [:-1]
are all elements except the last one:
>>> arr[:-1]
array([1, 2, 3, 4])
>>> arr[1:]
array([2, 3, 4, 5])
So adding those two gives you an array consisting of elements (1+2), (2+3) and so on.
Note that I'm dividing by 2.0
, not 2
because otherwise Python believes that you're only using integers and produces rounded integer results.
advantage of using numpy
Numpy can be much faster than loops around lists of numbers. Depending on how big your list is, several orders of magnitude faster. Also, it's a lot less code, and at least to me, it's easier to read. I'm trying to make a habit out of using numpy for all groups of numbers, and it is a huge improvement to all the loops and loops-within-loops I would otherwise have had to write.
I got the same "No Android SDK Found" error message... plus no rendering for Design window, no little cellphone screen.
My SDK path was correct, pointing to where the (downloaded during setup) SDK lives.
During Setup of the SDK Mgr, I didn't download the latest "preview edition (version 20)"...(I thought it better to use the next most recent version (19)) Later I found, there was no dropdown choice in the AVD Manager to pick Version 19, only the default value of the preview, 20.
I thought "Maybe the rendering was based on a version that wasn't present yet." So, I downloaded all the "preview edition's (version 20)" SDK Platform (2) and system images (4)...
Once download/install completed, RESTARTED Android Studio and Viola! success... error message gone, rendering ok.
<div class="col-md-12">
<h2>OntoExplorer<span style="color:#b92429">.</span></h2>
<div class="col-md-4">
<div class="widget row">
<div class="widget-header">
<h3>Dimensions</h3>
</div>
<div class="widget-content" id="">
<div id='jqxWidget'>
<div style="clear:both;margin-bottom:20px;" id="listBoxA"></div>
<div style="clear:both;" id="listBoxB"></div>
</div>
</div>
</div>
</div>
<div class="col-md-8">
<div class="widget row">
<div class="widget-header">
<h3>Results</h3>
</div>
<div class="widget-content">
<div id="map_canvas" style="height: 362px;"></div>
</div>
</div>
</div>
You can add a class of row to the div inside the col-md-4 and the row's -15px margin will balance out the gutter from the columns. Good explanation here about gutters and rows in Bootstrap 3.
To answer the question of going from an existing python datetime to a pandas Timestamp do the following:
import time, calendar, pandas as pd
from datetime import datetime
def to_posix_ts(d: datetime, utc:bool=True) -> float:
tt=d.timetuple()
return (calendar.timegm(tt) if utc else time.mktime(tt)) + round(d.microsecond/1000000, 0)
def pd_timestamp_from_datetime(d: datetime) -> pd.Timestamp:
return pd.to_datetime(to_posix_ts(d), unit='s')
dt = pd_timestamp_from_datetime(datetime.now())
print('({}) {}'.format(type(dt), dt))
Output:
(<class 'pandas._libs.tslibs.timestamps.Timestamp'>) 2020-09-05 23:38:55
I was hoping for a more elegant way to do this but the to_posix_ts
is already in my standard tool chain so I'm moving on.
You could also use vbCrLf
which corresponds to Chr(13)
& Chr(10)
.
If this can't be wrapped with generics (@Martijn's answer) it's better to pass it without casting to avoid redundant list iteration (checking the first element's type guarantees nothing). We can cast each element in the piece of code where we iterate the list.
Object attVal = jsonMap.get("attName");
List<Object> ls = new ArrayList<>();
if (attVal instanceof List) {
ls.addAll((List) attVal);
} else {
ls.add(attVal);
}
// far, far away ;)
for (Object item : ls) {
if (item instanceof String) {
System.out.println(item);
} else {
throw new RuntimeException("Wrong class ("+item .getClass()+") of "+item );
}
}
Swift 4 answer:
// Define paragraph style - you got to pass it along to NSAttributedString constructor
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
// Define attributed string attributes
let attributes = [NSAttributedStringKey.paragraphStyle: paragraphStyle]
let attributedString = NSAttributedString(string:"Test", attributes: attributes)
Building off of @gnovice's answer, you can actually create filled plots with shading only in the area between the two curves. Just use fill
in conjunction with fliplr
.
Example:
x=0:0.01:2*pi; %#initialize x array
y1=sin(x); %#create first curve
y2=sin(x)+.5; %#create second curve
X=[x,fliplr(x)]; %#create continuous x value array for plotting
Y=[y1,fliplr(y2)]; %#create y values for out and then back
fill(X,Y,'b'); %#plot filled area
By flipping the x array and concatenating it with the original, you're going out, down, back, and then up to close both arrays in a complete, many-many-many-sided polygon.
System.IO.Path.GetTempPath()
The path specified by the TMP
environment variable.
The path specified by the TEMP
environment variable.
The path specified by the USERPROFILE
environment variable.
The Windows directory.
You don't need to go to 64-bit to see something like this. Consider int32_t
on common 32-bit platforms. It might be typedef
'ed as int
or as a long
, but obviously only one of the two at a time. int
and long
are of course distinct types.
It's not hard to see that there is no workaround which makes int == int32_t == long
on 32-bit systems. For the same reason, there's no way to make long == int64_t == long long
on 64-bit systems.
If you could, the possible consequences would be rather painful for code that overloaded foo(int)
, foo(long)
and foo(long long)
- suddenly they'd have two definitions for the same overload?!
The correct solution is that your template code usually should not be relying on a precise type, but on the properties of that type. The whole same_type
logic could still be OK for specific cases:
long foo(long x);
std::tr1::disable_if(same_type(int64_t, long), int64_t)::type foo(int64_t);
I.e., the overload foo(int64_t)
is not defined when it's exactly the same as foo(long)
.
[edit] With C++11, we now have a standard way to write this:
long foo(long x);
std::enable_if<!std::is_same<int64_t, long>::value, int64_t>::type foo(int64_t);
[edit] Or C++20
long foo(long x);
int64_t foo(int64_t) requires (!std::is_same_v<int64_t, long>);
Yes, it is true that Abstraction and Encapsulation are about hiding.
Using only relevant details and hiding unnecessary data at Design Level is called Abstraction. (Like selecting only relevant properties for a class 'Car' to make it more abstract or general.)
Encapsulation is the hiding of data at Implementation Level. Like how to actually hide data from direct/external access. This is done by binding data and methods to a single entity/unit to prevent external access. Thus, encapsulation is also known as data hiding at implementation level.
return value.replaceAll("[^A-Za-z0-9 ]", "");
This will leave spaces intact. I assume that's what you want. Otherwise, remove the space from the regex.
If you have anaconda, you can just install desired version and conda will automatically downgrade the current package for you.
For example:
conda install tensorflow=1.1
I have just cooked up another solution for this, where it's not longer necessary to use a -much to high- max-height value. It needs a few lines of javascript code to calculate the inner height of the collapsed DIV but after that, it's all CSS.
1) Fetching and setting height
Fetch the inner height of the collapsed element (using scrollHeight
). My element has a class .section__accordeon__content
and I actually run this in a forEach()
loop to set the height for all panels, but you get the idea.
document.querySelectorAll( '.section__accordeon__content' ).style.cssText = "--accordeon-height: " + accordeonPanel.scrollHeight + "px";
2) Use the CSS variable to expand the active item
Next, use the CSS variable to set the max-height
value when the item has an .active
class.
.section__accordeon__content.active {
max-height: var(--accordeon-height);
}
Final example
So the full example goes like this: first loop through all accordeon panels and store their scrollHeight
values as CSS variables. Next use the CSS variable as the max-height
value on the active/expanded/open state of the element.
Javascript:
document.querySelectorAll( '.section__accordeon__content' ).forEach(
function( accordeonPanel ) {
accordeonPanel.style.cssText = "--accordeon-height: " + accordeonPanel.scrollHeight + "px";
}
);
CSS:
.section__accordeon__content {
max-height: 0px;
overflow: hidden;
transition: all 425ms cubic-bezier(0.465, 0.183, 0.153, 0.946);
}
.section__accordeon__content.active {
max-height: var(--accordeon-height);
}
And there you have it. A adaptive max-height animation using only CSS and a few lines of JavaScript code (no jQuery required).
Hope this helps someone in the future (or my future self for reference).
So you are doing this a bit backwards. Typically you'd do something like this:
?<div class='article'>
Article 1
</div>
<div class='article'>
Article 2
</div>
<div class='article'>
Article 3
</div>?
And then in your jQuery:
$('.article').click(function(){
article = $(this).text(); //$(this) is what you clicked!
});?
When I see things like #search-item .search-article
, #search-item .search-article
, and #search-item .search-article
I sense you are overspecifying your CSS which makes writing concise jQuery very difficult. This should be avoided if at all possible.
android:editable="false"
should work, but it is deprecated, you should be using android:inputType="none"
instead.
Alternatively, if you want to do it in the code you could do this :
EditText mEdit = (EditText) findViewById(R.id.yourid);
mEdit.setEnabled(false);
This is also a viable alternative :
EditText mEdit = (EditText) findViewById(R.id.yourid);
mEdit.setKeyListener(null);
If you're going to make your EditText
non-editable, may I suggest using the TextView
widget instead of the EditText
, since using a EditText seems kind of pointless in that case.
EDIT: Altered some information since I've found that android:editable
is deprecated, and you should use android:inputType="none"
, but there is a bug about it on android code; So please check this.
I am required to show form vertically center inside container-fluid so I developed my own code for the same.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<style>
.container-fluid
{
display: table-cell;
height: 100vh;
width: 100vw !important;
vertical-align: middle;
border:1px solid black;
}
</style>
</head>
<body>
<div class="container-fluid">
<div class="row">
<div class="col-8 offset-2">
<div class="card shadow">
<div class="card-header bg-danger text-white">
<h2>Login</h2>
</div>
<div class="card-body">
<form action="">
<div class="form-group row">
<label for="txtemail" class="col-form-label col-sm-2">Email</label>
<div class="col-sm-10">
<input type="email" name="txtemail" id="txtemail" class="form-control" required />
</div>
</div>
<div class="form-group row">
<label for="txtpassword" class="col-form-label col-sm-2">Password</label>
<div class="col-sm-10">
<input type="password" name="txtpassword" id="txtpassword" class="form-control"
required />
</div>
</div>
<div class="form-group">
<button class="btn btn-danger btn-block">Login</button>
<button class="btn btn-warning btn-block">clear all</button>
</div>
</form>
</div>
</div>
</div>
</div>
<script src="js/jquery.js"></script>
<script src="js/popper.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
Sadly, no, you can't run 4.5 programs on XP.
And the relevant post from that Connect page:
Posted by Microsoft on 23/03/2012 at 10:39
Thanks for the report. This behavior is by design in .NET Framework 4.5 Beta. The minimum supported operating systems are Windows 7, Windows Server 2008 SP2 and Windows Server 2008 R2 SP1. Windows XP is not a supported operating system for the Beta release.
You can use the AND or OR operators, depending on what you want the search to return.
SELECT title FROM pages WHERE my_col LIKE %$param1% AND another_col LIKE %$param2%;
Both clauses have to match for a record to be returned. Alternatively:
SELECT title FROM pages WHERE my_col LIKE %$param1% OR another_col LIKE %$param2%;
If either clause matches then the record will be returned.
For more about what you can do with MySQL SELECT queries, try the documentation.
Follow these steps
Install jupyterthemes with pip:
pip install jupyterthemes
Then Choose the themes from the following and set them using the following command, Once you have installed successfully, Many of us thought we need to start the jupyter server again, just refresh the page.
Set the theme with the following command:
jt -t <theme-name>
Available themes:
Screens of the available themes are also available in the Github repository.
NET FRAMEWORK
Very well explained and few programming lines GOOD JOB
// Store integer 182
int intValue = 182;
// Convert integer 182 as a hex in a string variable
string hexValue = intValue.ToString("X");
// Convert the hex string back to the number
int intAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);
PASCAL >> C#
http://files.hddguru.com/download/Software/Seagate/St_mem.pas
Something from the old school very old procedure of pascal converted to C #
/// <summary>
/// Conver number from Decadic to Hexadecimal
/// </summary>
/// <param name="w"></param>
/// <returns></returns>
public string MakeHex(int w)
{
try
{
char[] b = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
char[] S = new char[7];
S[0] = b[(w >> 24) & 15];
S[1] = b[(w >> 20) & 15];
S[2] = b[(w >> 16) & 15];
S[3] = b[(w >> 12) & 15];
S[4] = b[(w >> 8) & 15];
S[5] = b[(w >> 4) & 15];
S[6] = b[w & 15];
string _MakeHex = new string(S, 0, S.Count());
return _MakeHex;
}
catch (Exception ex)
{
throw;
}
}
See this question: JADE + EXPRESS: Iterating over object in inline JS code (client-side)?
I'm having the same problem. Jade does not pass local variables in (or do any templating at all) to javascript scripts, it simply passes the entire block in as literal text. If you use the local variables 'address' and 'port' in your Jade file above the script tag they should show up.
Possible solutions are listed in the question I linked to above, but you can either: - pass every line in as unescaped text (!= at the beginning of every line), and simply put "-" before every line of javascript that uses a local variable, or: - Pass variables in through a dom element and access through JQuery (ugly)
Is there no better way? It seems the creators of Jade do not want multiline javascript support, as shown by this thread in GitHub: https://github.com/visionmedia/jade/pull/405
here is another way to do by implementing yourself the mechanism. here we consider that the array should start with 0 and would have no hole between indice
/**
* get a string property's value
* @param propKey property key
* @param defaultValue default value if the property is not found
* @return value
*/
public static String getSystemStringProperty(String propKey,
String defaultValue) {
String strProp = System.getProperty(propKey);
if (strProp == null) {
strProp = defaultValue;
}
return strProp;
}
/**
* internal recursive method to get string properties (array)
* @param curResult current result
* @param paramName property key prefix
* @param i current indice
* @return array of property's values
*/
private static List<String> getSystemStringProperties(List<String> curResult, String paramName, int i) {
String paramIValue = getSystemStringProperty(paramName + "." + String.valueOf(i), null);
if (paramIValue == null) {
return curResult;
}
curResult.add(paramIValue);
return getSystemStringProperties(curResult, paramName, i+1);
}
/**
* get the values from a property key prefix
* @param paramName property key prefix
* @return string array of values
*/
public static String[] getSystemStringProperties(
String paramName) {
List<String> stringProperties = getSystemStringProperties(new ArrayList<String>(), paramName, 0);
return stringProperties.toArray(new String[stringProperties.size()]);
}
Here is a way to test :
@Test
public void should_be_able_to_get_array_of_properties() {
System.setProperty("my.parameter.0", "ooO");
System.setProperty("my.parameter.1", "oO");
System.setProperty("my.parameter.2", "boo");
// WHEN
String[] pluginParams = PropertiesHelper.getSystemStringProperties("my.parameter");
// THEN
assertThat(pluginParams).isNotNull();
assertThat(pluginParams).containsExactly("ooO","oO","boo");
System.out.println(pluginParams[0].toString());
}
hope this helps
and all remarks are welcome..
Kndly note that truncating a string not merely means justing cutting a string at a specified length alone but have to take care not to split the word.
eg string : this is a test string.
I want to cut it at 11 . If we use any of the method given above the result will be
this is a te
This is not the thing we want
The method i am using may also not so perfect but it can handle most of the situation
public string CutString(string source, int length)
{
if (source== null || source.Length < length)
{
return source;
}
int nextSpace = source.LastIndexOf(" ", length);
return string.Format("{0}...", input.Substring(0, (nextSpace > 0) ? nextSpace : length).Trim());
}
The following debugging process helped me solve a similar issue.
with open("output_init.txt", "w") as text_file:
text_file.write(driver.page_source.encode('ascii','ignore'))
xpath1 = "the xpath of the link you want to click on"
destination_page_link = driver.find_element_by_xpath(xpath1)
destination_page_link.click()
with open("output_dest.txt", "w") as text_file:
text_file.write(driver.page_source.encode('ascii','ignore'))
You should then have two textfiles with the initial page you were on ('output_init.txt') and the page you were forwarded to after clicking the button ('output_dest.txt'). If they're the same, then yup, your code did not work. If they aren't, then your code worked, but you have another issue. The issue for me seemed to be that the necessary javascript that transformed the content to produce my hook was not yet executed.
Your options as I see it:
xpath2 = "your xpath that you are going to click on"
WebDriverWait(driver, timeout=5).until(lambda x: x.find_element_by_xpath(xpath2))
The xpath approach isn't necessarily better, I just prefer it, you can also use your selector approach.
If you have something that's O(f(n)) that means there's are k, g(n) such that f(n) ≤ k g(n).
If you have something that's Ω(f(n)) that means there's are k, g(n) such that f(n) ≥ k g(n).
And if you have a something with O(f(n)) and Ω(f(n)), then it's Θ(f(n).
The Wikipedia article is decent, if a little dense.
SQL is expecting the GUID as a string. The following in C# returns a string Sql is expecting.
"'" + Guid.NewGuid().ToString() + "'"
Something like
INSERT INTO TABLE (GuidID) VALUE ('4b5e95a7-745a-462f-ae53-709a8583700a')
is what it should look like in SQL.
Use a while
loop with local status
flag. Initialize the flag as false
and set it to true
when operation is successful e.g. below:
boolean success = false;
while(!success){
try{
some_instruction();
success = true;
} catch (NearlyUnexpectedException e){
fix_the_problem();
}
}
This will keep retrying until its successful.
If you want to retry only certain number of times then use a counter as well:
boolean success = false;
int count = 0, MAX_TRIES = 10;
while(!success && count++ < MAX_TRIES){
try{
some_instruction();
success = true;
} catch (NearlyUnexpectedException e){
fix_the_problem();
}
}
if(!success){
//It wasn't successful after 10 retries
}
This will try max 10 times if not successful until then an will exit if its successful before hand.
Expanding on @mvp's solution with unobtrusive javascript in mind, here's the approach:
HTML:
<input type="text" placeholder="Date" class="js-text-date-toggle">
Javascript:
$('.js-text-date-toggle').on('focus', function() {
$(this).attr('type', 'date') }
).on('blur', function() {
$(this).attr('type'), 'text') }
)
I have simply pasted the following to the top of my bash scripts:
#!/usr/bin/env bash -e
declare script=$(basename "$0")
declare dirname=$(dirname "$0")
declare scriptDir
if [[ $(uname) == 'Linux' ]];then
# use readlink -f
scriptDir=$(readlink -f "$dirname")
else
# can't use readlink -f, do a pwd -P in the script directory and then switch back
if [[ "$dirname" = '.' ]];then
# don't change directory, we are already inside
scriptDir=$(pwd -P)
else
# switch to the directory and then switch back
pwd=$(pwd)
cd "$dirname"
scriptDir=$(pwd -P)
cd "$pwd"
fi
fi
And removed all instances of readlink -f
. $scriptDir
and $script
then will be available for the rest of the script.
While this does not follow all symlinks, it works on all systems and appears to be good enough for most use cases, it switches the directory into the containing folder, and then it does a pwd -P
to get the real path of that directory, and then finally switch back to the original.
Use the lag function:
SELECT value - lag(value) OVER (ORDER BY Id) FROM table
Sequences used for Ids can skip values, so Id-1 does not always work.
Starting and Stopping MongoDB is covered in the MongoDB manual. It explains the various options of stopping MongoDB through the shell, cli, drivers etc. It also details the risks of incorrectly stopping MongoDB (such as data corruption) and talks about the different kill signals.
Additionally, if you have installed MongoDB using a package manager for Ubuntu or Debian then you can stop mongodb (currently mongod in ubuntu) as follows:
Upstart: sudo service mongod stop
Sysvinit: sudo /etc/init.d/mongod stop
Or on Mac OS X
Find PID of mongod process using $ top
Kill the process by $ kill <PID>
(the Mongo docs have more info on this)
Or on Red Hat based systems:
service mongod stop
Or on Windows if you have installed as a service named MongoDB
:
net stop MongoDB
And if not installed as a service (as of Windows 7+) you can run:
taskkill /f /im mongod.exe
To learn more about the problems of an unclean shutdown, how to best avoid such a scenario and what to do in the event of an unclean shutdown, please see: Recover Data after an Unexpected Shutdown.
Perfect answer for your question can be found on MYSQL site itself.refer their manual(without using PHP)
http://forums.mysql.com/read.php?20,17671,27914
According to them use LONGBLOB datatype. with that you can only store images less than 1MB only by default,although it can be changed by editing server config file.i would also recommend using MySQL workBench for ease of database management
You are looking for the static method Math.Pow()
.
As already answered, this is per spec not possible with the fetch
-API, yet. But I have to note:
If you are on node
, there's the querystring
package. It can stringify/parse objects/querystrings:
var querystring = require('querystring')
var data = { key: 'value' }
querystring.stringify(data) // => 'key=value'
...then just append it to the url to request.
However, the problem with the above is, that you always have to prepend a question mark (?
). So, another way is to use the parse
method from nodes url
package and do it as follows:
var url = require('url')
var data = { key: 'value' }
url.format({ query: data }) // => '?key=value'
See query
at https://nodejs.org/api/url.html#url_url_format_urlobj
This is possible, as it does internally just this:
search = obj.search || (
obj.query && ('?' + (
typeof(obj.query) === 'object' ?
querystring.stringify(obj.query) :
String(obj.query)
))
) || ''
in case you do not only need to undo your last query (although your question actually only points on that, I know) and therefore if a transaction might not help you out, you need to implement a workaround for this:
copy the original data before commiting your query and write it back on demand based on the unique id that must be the same in both tables; your rollback-table (with the copies of the unchanged data) and your actual table (containing the data that should be "undone" than). for databases having many tables, one single "rollback-table" containing structured dumps/copies of the original data would be better to use then one for each actual table. it would contain the name of the actual table, the unique id of the row, and in a third field the content in any desired format that represents the data structure and values clearly (e.g. XML). based on the first two fields this third one would be parsed and written back to the actual table. a fourth field with a timestamp would help cleaning up this rollback-table.
since there is no real undo in SQL-dialects despite "rollback" in a transaction (please correct me if I'm wrong - maybe there now is one), this is the only way, I guess, and you have to write the code for it on your own.
You shouldn't have to make any changes to the certificate. Are you sure you are running the right import command?
The following works for me:
keytool -import -alias joe -file mycert.cer -keystore mycerts -storepass changeit
where mycert.cer contains:
-----BEGIN CERTIFICATE-----
MIIFUTCCBDmgAwIBAgIHK4FgDiVqczANBgkqhkiG9w0BAQUFADCByjELMAkGA1UE
BhMCVVMxEDAOBgNVBAgTB0FyaXpvbmExEzARBgNVBAcTClNjb3R0c2RhbGUxGjAY
...
RLJKd+SjxhLMD2pznKxC/Ztkkcoxaw9u0zVPOPrUtsE/X68Vmv6AEHJ+lWnUaWlf
zLpfMEvelFPYH4NT9mV5wuQ1Pgurf/ydBhPizc0uOCvd6UddJS5rPfVWnuFkgQOk
WmD+yvuojwsL38LPbtrC8SZgPKT3grnLwKu18nm3UN2isuciKPF2spNEFnmCUWDc
MMicbud3twMSO6Zbm3lx6CToNFzP
-----END CERTIFICATE-----
If you're using gulp, then you can use this plugin:
Install this plugin with the command:
npm install gulp-remove-logging
Next, add this line to your gulpfile:
var gulp_remove_logging = require("gulp-remove-logging");
Lastly, add the configuration settings (see below) to your gulpfile.
Task Configuration
gulp.task("remove_logging", function() { return gulp.src("src/javascripts/**/*.js") .pipe( gulp_remove_logging() ) .pipe( gulp.dest( "build/javascripts/" ) ); });
Use directly
$paymentDate = strtotime(date("d-m-Y"));
$contractDateBegin = strtotime("01-01-2001");
$contractDateEnd = strtotime("01-01-2015");
Then comparison will be ok cause your 01-01-2015 is valid for PHP's 32bit date-range, stated in strtotime's manual.
Above answers are good but If you do not want to add string include, you can use the following
ostream& operator<<(ostream& os, string& msg)
{
os<<msg.c_str();
return os;
}
For many years I have always used this format:
<?php
$data = "Hello";
function sayHello(){
echo $GLOBALS["data"];
}
sayHello();
?>
I find it straightforward and easy to follow. The $GLOBALS is how PHP lets you reference a global variable. If you have used things like $_SERVER, $_POST, etc. then you have reference a global variable without knowing it.
I believe you need to .f
file as a parameter, not as a command-single-string. same with the "--domain "+i
, which i would split in two elements of the list.
Assuming that:
FORTRAN
executable, ~/
is indeed the correct way for the FORTRAN
executableI would change this line:
subprocess.Popen(["FORTRAN ~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f", "--domain "+i])
to
subprocess.Popen(["FORTRAN", "~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f", "--domain", i])
If that doesn't work, you should do a os.path.exists()
for the .f
file, and check that you can launch the FORTRAN
executable without any path, and set the path or system path variable accordingly
[EDIT 6-Mar-2017]
As the exception, detailed in the original post, is a python exception from subprocess
; it is likely that the WinError 2
is because it cannot find FORTRAN
I highly suggest that you specify full path for your executable:
for i in input:
exe = r'c:\somedir\fortrandir\fortran.exe'
fortran_script = r'~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f'
subprocess.Popen([exe, fortran_script, "--domain", i])
if you need to convert the forward-slashes to backward-slashes, as suggested in one of the comments, you can do this:
for i in input:
exe = os.path.normcase(r'c:\somedir\fortrandir\fortran.exe')
fortran_script = os.path.normcase(r'~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f')
i = os.path.normcase(i)
subprocess.Popen([exe, fortran_script, "--domain", i])
[EDIT 7-Mar-2017]
The following line is incorrect:
exe = os.path.normcase(r'~/C:/Program Files (x86)/Silverfrost/ftn95.exe'
I am not sure why you have ~/
as a prefix for every path, don't do that.
for i in input:
exe = os.path.normcase(r'C:/Program Files (x86)/Silverfrost/ftn95.exe'
fortran_script = os.path.normcase(r'C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f')
i = os.path.normcase(i)
subprocess.Popen([exe, fortran_script, "--domain", i])
[2nd EDIT 7-Mar-2017]
I do not know this FORTRAN or ftn95.exe, does it need a shell to function properly?, in which case you need to launch as follows:
subprocess.Popen([exe, fortran_script, "--domain", i], shell = True)
You really need to try to launch the command manually from the working directory which your python script is operating from. Once you have the command which is actually working, then build up the subprocess
command.
I would vote no. Hibernate doesn't seem to understand when datatypes for columns have changed. Examples (using MySQL):
String with @Column(length=50) ==> varchar(50)
changed to
String with @Column(length=100) ==> still varchar(50), not changed to varchar(100)
@Temporal(TemporalType.TIMESTAMP,TIME,DATE) will not update the DB columns if changed
There are probably other examples as well, such as pushing the length of a String column up over 255 and seeing it convert to text, mediumtext, etc etc.
Granted, I don't think there is really a way to "convert datatypes" with without creating a new column, copying the data and blowing away the old column. But the minute your database has columns which don't reflect the current Hibernate mapping you are living very dangerously...
Flyway is a good option to deal with this problem:
There are situations where it matters.
If you pass AF_INET to socket()
in Cygwin, your socket may or may not be randomly reset. Passing PF_INET ensures that the connection works right.
Cygwin is self-admittedly a huge mess for socket programming, but it is a real world case where AF_INET and PF_INET are not identical.
Start by creating a mapping of group names to values. Then transform into your desired format.
var myArray = [_x000D_
{group: "one", color: "red"},_x000D_
{group: "two", color: "blue"},_x000D_
{group: "one", color: "green"},_x000D_
{group: "one", color: "black"}_x000D_
];_x000D_
_x000D_
var group_to_values = myArray.reduce(function (obj, item) {_x000D_
obj[item.group] = obj[item.group] || [];_x000D_
obj[item.group].push(item.color);_x000D_
return obj;_x000D_
}, {});_x000D_
_x000D_
var groups = Object.keys(group_to_values).map(function (key) {_x000D_
return {group: key, color: group_to_values[key]};_x000D_
});_x000D_
_x000D_
var pre = document.createElement("pre");_x000D_
pre.innerHTML = "groups:\n\n" + JSON.stringify(groups, null, 4);_x000D_
document.body.appendChild(pre);
_x000D_
Using Array instance methods such as reduce and map gives you powerful higher-level constructs that can save you a lot of the pain of looping manually.
You can only use one color but as many images as you want, here is the format:
background: [ <bg-layer> , ]* <final-bg-layer>
<bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2}
<final-bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2} || <background-color>
or
background: url(image1.png) center bottom no-repeat, url(image2.png) left top no-repeat;
If you need more colors, make an image of a solid color and use it. I know it’s not what you want to hear, but I hope it helps.
The format is from http://www.css3.info/preview/multiple-backgrounds/
If every char in the file is properly encoded in UTF-8, you won't have any problem reading it using a reader with the UTF-8 encoding. Up to you to check every char of the file and see if you consider it printable or not.
On the startup screen you can use the configure button to check for updates.
1) Choose configure > Check for Update
2) Download the latest updates
.gitattributes
- is a root-level file of your repository that defines the attributes for a subdirectory or subset of files.
You can specify the attribute to tell Git to use different merge strategies for a specific file. Here, we want to preserve the existing config.xml
for our branch.
We need to set the merge=foo
to config.xml
in .gitattributes
file.
merge=foo
tell git to use our(current branch) file, if a merge conflict occurs.
Add a .gitattributes
file at the root level of the repository
You can set up an attribute for confix.xml in the .gitattributes
file
<pattern> merge=foo
Let's take an example for config.xml
config.xml merge=foo
And then define a dummy foo
merge strategy with:
$ git config --global merge.foo.driver true
If you merge the stag
form dev
branch, instead of having the merge conflicts with the config.xml
file, the stag branch's config.xml preserves at whatever version you originally had.
for more reference: merge_strategies
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Configuration;
using System.Data.SqlClient;
public partial class CS : System.Web.UI.Page
{
protected void ExportCSV(object sender, EventArgs e)
{
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (SqlConnection con = new SqlConnection(constr))
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM Customers"))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataTable dt = new DataTable())
{
sda.Fill(dt);
//Build the CSV file data as a Comma separated string.
string csv = string.Empty;
foreach (DataColumn column in dt.Columns)
{
//Add the Header row for CSV file.
csv += column.ColumnName + ',';
}
//Add new line.
csv += "\r\n";
foreach (DataRow row in dt.Rows)
{
foreach (DataColumn column in dt.Columns)
{
//Add the Data rows.
csv += row[column.ColumnName].ToString().Replace(",", ";") + ',';
}
//Add new line.
csv += "\r\n";
}
//Download the CSV file.
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=SqlExport.csv");
Response.Charset = "";
Response.ContentType = "application/text";
Response.Output.Write(csv);
Response.Flush();
Response.End();
}
}
}
}
}
}
This approach avoids the warnings while preserving the array-oriented evaluation.
import numpy as np
def isnat(x):
"""
datetime64 analog to isnan.
doesn't yet exist in numpy - other ways give warnings
and are likely to change.
"""
return x.astype('i8') == np.datetime64('NaT').astype('i8')
In 2021 the easiest way is to use asyncio:
import asyncio, time
async def say_after(delay, what):
await asyncio.sleep(delay)
print(what)
async def main():
task1 = asyncio.create_task(
say_after(4, 'hello'))
task2 = asyncio.create_task(
say_after(3, 'world'))
print(f"started at {time.strftime('%X')}")
# Wait until both tasks are completed (should take
# around 2 seconds.)
await task1
await task2
print(f"finished at {time.strftime('%X')}")
asyncio.run(main())
References:
The question is quite old but revert is still confusing people (like me)
As a beginner, after some trial and error (more errors than trials) I've got an important point:
git revert
requires the id of the commit you want to remove keeping it into your history
git reset
requires the commit you want to keep, and will consequentially remove anything after that from history.
That is, if you use revert
with the first commit id, you'll find yourself into an empty directory and an additional commit in history, while with reset your directory will be.. reverted back to the initial commit and your history will get as if the last commit(s) never happened.
To be even more clear, with a log like this:
# git log --oneline
cb76ee4 wrong
01b56c6 test
2e407ce first commit
Using git revert cb76ee4
will by default bring your files back to 01b56c6 and will add a further commit to your history:
8d4406b Revert "wrong"
cb76ee4 wrong
01b56c6 test
2e407ce first commit
git reset 01b56c6
will instead bring your files back to 01b56c6 and will clean up any other commit after that from your history :
01b56c6 test
2e407ce first commit
I know these are "the basis" but it was quite confusing for me, by running revert
on first id ('first commit') I was expecting to find my initial files, it taken a while to understand, that if you need your files back as 'first commit' you need to use the next id.
if you want to give the space between layout .this is the way to use space. if you remove margin it will not appear.use of text inside space to appear is not a good approach. hope that helps.
<Space
android:layout_width="match_content"
android:layout_height="wrap_content"
android:layout_margin="2sp" />
I don't understand what the meaning of ordering with the same column ASC
and DESC
in the same ORDER BY
, but this how you can do it: naam DESC, naam ASC
like so:
ORDER BY `product_category_id` DESC,`naam` DESC, `naam` ASC
All you have to do is this
list = ["a", "b", "c"]
try:
list.remove("a")
except:
print("meow")
but that method has an issue. You have to put something in the except place so i found this:
list = ["a", "b", "c"]
if "a" in str(list):
list.remove("a")
None of the above solutions were working out well for me. I needed a dynamic image size to fit in a circular parent container with overflow:hidden
.circle-container {
width:100px;
height:100px;
text-align:center;
border-radius:50%;
overflow:hidden;
}
.circle-img img {
min-width:100px;
max-width:none;
height:100px;
margin:0 -100%;
}
Working example here: http://codepen.io/simgooder/pen/yNmXer
JMeter should be started using :
this will ensure correct property files are read and necessary jars in lib are loaded.
any other method will expose you to a lot of trouble.
the most upvoted answer is wrong !
See 1.4 Running JMeter in reference documentation :
If you'd like to learn more about JMeter and performance testing this book can help you.
make sure your app is live on developer.facebook.com
This green circle is indicating the app is live
If it is not then follow this two steps for make your app live
Step 1 Go to your application -> setting => and add Contact Email and apply save Changes
Setp 2 Then goto App Review option and make sure this toggle is Yes i added a screen shot
Here's how to check which columns are the wrong collation:
SELECT table_schema, table_name, column_name, character_set_name, collation_name
FROM information_schema.columns
WHERE collation_name = 'latin1_general_ci'
ORDER BY table_schema, table_name,ordinal_position;
And here's the query to fix it:
ALTER TABLE tbl_name CONVERT TO CHARACTER SET latin1 COLLATE 'latin1_swedish_ci';
I encountered the same issue when using Git Bash. When I did the same thing in Command Prompt it worked perfectly.
Use the pandas.DataFrame.rename funtion. Check this link for description.
data.rename(columns = {'gdp': 'log(gdp)'}, inplace = True)
If you intend to rename multiple columns then
data.rename(columns = {'gdp': 'log(gdp)', 'cap': 'log(cap)', ..}, inplace = True)
echo "{$test}y";
You can use braces to remove ambiguity when interpolating variables directly in strings.
Also, this doesn't work with single quotes. So:
echo '{$test}y';
will output
{$test}y
You could just write to the file as you would write any normal file.
with open('csvfile.csv','wb') as file:
for l in text:
file.write(l)
file.write('\n')
If just in case, it is a list of lists, you could directly use built-in csv
module
import csv
with open("csvfile.csv", "wb") as file:
writer = csv.writer(file)
writer.writerows(text)
To answer the question: Creating dynamically sized arrays at run-time is done using std::vector<T>
. Ideally, you'd get your input using one of these. If not, it is easy to convert them. For example, you could create two arrays like this:
template <typename T>
void merge_sort(std::vector<T>& array) {
if (1 < array.size()) {
std::vector<T> array1(array.begin(), array.begin() + array.size() / 2);
merge_sort(array1);
std::vector<T> array2(array.begin() + array.size() / 2, array.end());
merge_sort(array2);
merge(array, array1, array2);
}
}
However, allocating dynamic arrays is relatively slow and generally should be avoided when possible. For merge sort you can just sort subsequences of the original array and in-place merge them. It seems, std::inplace_merge()
asks for bidirectional iterators.
DECLARE @EmpGroup INT =3 ,
@IsActive BIT=1
DECLARE @tblEmpMaster AS TABLE
(EmpCode VARCHAR(20),EmpName VARCHAR(50),EmpAddress VARCHAR(500))
INSERT INTO @tblEmpMaster EXECUTE SPGetEmpList @EmpGroup,@IsActive
SELECT * FROM @tblEmpMaster
function bufferToBinaryString(arrayBuffer){
return String.fromCharCode(...new Uint8Array(arrayBuffer));
}
(async () => console.log(btoa(bufferToBinaryString(await new Response(blob).arrayBuffer()))))();
or
function bufferToBinaryString(arrayBuffer){
return String.fromCharCode(...new Uint8Array(arrayBuffer));
}
new Response(blob).arrayBuffer().then(arr_buf => console.log(btoa(bufferToBinaryString(arr_buf)))))
see Response's constructor, you can turn [blob, buffer source form data, readable stream, etc.]
into Response, which can then be turned into [json, text, array buffer, blob]
with async method/callbacks.
edit: as @Ralph mentioned, turning everything into utf-8 string causes problems (unfortunately Response API doesn't provide a way converting to binary string), so array buffer is use as intermediate instead, which requires two more steps (converting it to byte array THEN to binary string), if you insist on using native btoa
method.
Since favorites is an array, you just need to splice it off and save the document.
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
var favorite = new Schema({
cn: String,
favorites: Array
});
module.exports = mongoose.model('Favorite', favorite);
exports.deleteFavorite = function (req, res, next) {
if (req.params.callback !== null) {
res.contentType = 'application/javascript';
}
// Changed to findOne instead of find to get a single document with the favorites.
Favorite.findOne({cn: req.params.name}, function (error, doc) {
if (error) {
res.send(null, 500);
} else if (doc) {
var records = {'records': doc};
// find the delete uid in the favorites array
var idx = doc.favorites ? doc.favorites.indexOf(req.params.deleteUid) : -1;
// is it valid?
if (idx !== -1) {
// remove it from the array.
doc.favorites.splice(idx, 1);
// save the doc
doc.save(function(error) {
if (error) {
console.log(error);
res.send(null, 500);
} else {
// send the records
res.send(records);
}
});
// stop here, otherwise 404
return;
}
}
// send 404 not found
res.send(null, 404);
});
};
First Method
View someView = findViewById(R.id.randomViewInMainLayout);// get Any child View
// Find the root view
View root = someView.getRootView()
// Set the color
root.setBackgroundColor(getResources().getColor(android.R.color.red));
Second Method
Add this single line after setContentView(...);
getWindow().getDecorView().setBackgroundColor(Color.WHITE);
Third Method
set background color to the rootView
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF"
android:id="@+id/rootView"
</LinearLayout>
Important Thing
rootView.setBackgroundColor(0xFF00FF00); //after 0x the other four pairs are alpha,red,green,blue color.
The issue with my designer was 32 vs 64 bit issue. I could add the control to tool box after following the instructions in Cannot add Controls from 64-bit Assemblies to the Toolbox or Use in Designers Within the Visual Studio IDE MS KB article.
You can also do this:
<ul id="example">
<li>First</li>
<li>Second</li>
<li>Third</li>
<li>Fourth</li>
</ul>
// possibility 1
$('#example li:last').val();
// possibility 2
$('#example').children().last()
// possibility 3
$('#example li:last-child').val();
Finally got the issue resolved today. The issue was with the .htaccess
file.
Learning to myself: MUST READ THE CODEIGNITER DOCUMENTATION more thoroughly.
You can specify hosting URL without any changes to your app.
Create a Properties/launchSettings.json
file in your project directory and fill it with something like this:
{
"profiles": {
"MyApp1-Dev": {
"commandName": "Project",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
},
"applicationUrl": "http://localhost:5001/"
}
}
}
dotnet run
command should pick your launchSettings.json
file and will display it in the console:
C:\ProjectPath [master =]
? dotnet run
Using launch settings from C:\ProjectPath\Properties\launchSettings.json...
Hosting environment: Development
Content root path: C:\ProjectPath
Now listening on: http://localhost:5001
Application started. Press Ctrl+C to shut down.
More details: https://docs.microsoft.com/en-us/aspnet/core/fundamentals/environments
merge into x as target using y as Source on target.ID = Source.ID
when not matched by target then insert
when matched then update
when not matched by source and target.ID is not null then
update whatevercolumn = 'isdeleted' ;
IRIs do not replace URIs, because only URIs (effectively, ASCII) are permissible in some contexts -- including HTTP.
Instead, you specify an IRI and it gets transformed into a URI when going out on the wire.
answering your question 2:
I would use option b
simply because it consumes much less resources. with option 'a', every client will cause the server to consume a lot of memory, loading all the files you need (even though i like php, this is one of the problems with it). With option 'b' you can load your libraries (reusable code) and share them among all client requests.
But be ware that if you have multiple cores you should tweak node.js to use all of them.
I am working on a project for a print-shop and had some problems due to uploading images to the server that came from an HTML5 canvas
element. I was struggling for at least an hour and I did not get it to save the image correctly on my server.
Once I set the
contentType
option of my jQuery ajax call to application/x-www-form-urlencoded
everything went the right way and the base64-encoded data was interpreted correctly and successfully saved as an image.
Maybe that helps someone!
It may seem as being too cautious, but I frequently zip a copy of whatever I've been working on before I make source control changes. In a Gitlab project I'm working on, I recently deleted a remote branch by mistake that I wanted to keep after merging a merge request. It turns out all I had to do to get it back with the commit history was push again. The merge request was still tracked by Gitlab, so it still shows the blue 'merged' label to the right of the branch. I still zipped my local folder in case something bad happened.
Use the PowerConsole project on Github at https://github.com/bigabdoul/PowerConsole or the equivalent NuGet package at https://www.nuget.org/packages/PowerConsole. It elegantly handles timers in a reusable fashion. Take a look at this sample code:
using PowerConsole;
namespace PowerConsoleTest
{
class Program
{
static readonly SmartConsole MyConsole = SmartConsole.Default;
static void Main()
{
RunTimers();
}
public static void RunTimers()
{
// CAUTION: SmartConsole is not thread safe!
// Spawn multiple timers carefully when accessing
// simultaneously members of the SmartConsole class.
MyConsole.WriteInfo("\nWelcome to the Timers demo!\n")
// SetTimeout is called only once after the provided delay and
// is automatically removed by the TimerManager class
.SetTimeout(e =>
{
// this action is called back after 5.5 seconds; the name
// of the timer is useful should we want to clear it
// before this action gets executed
e.Console.Write("\n").WriteError("Time out occured after 5.5 seconds! " +
"Timer has been automatically disposed.\n");
// the next statement will make the current instance of
// SmartConsole throw an exception on the next prompt attempt
// e.Console.CancelRequested = true;
// use 5500 or any other value not multiple of 1000 to
// reduce write collision risk with the next timer
}, millisecondsDelay: 5500, name: "SampleTimeout")
.SetInterval(e =>
{
if (e.Ticks == 1)
{
e.Console.WriteLine();
}
e.Console.Write($"\rFirst timer tick: ", System.ConsoleColor.White)
.WriteInfo(e.TicksToSecondsElapsed());
if (e.Ticks > 4)
{
// we could remove the previous timeout:
// e.Console.ClearTimeout("SampleTimeout");
}
}, millisecondsInterval: 1000, "EverySecond")
// we can add as many timers as we want (or the computer's resources permit)
.SetInterval(e =>
{
if (e.Ticks == 1 || e.Ticks == 3) // 1.5 or 4.5 seconds to avoid write collision
{
e.Console.WriteSuccess("\nSecond timer is active...\n");
}
else if (e.Ticks == 5)
{
e.Console.WriteWarning("\nSecond timer is disposing...\n");
// doesn't dispose the timer
// e.Timer.Stop();
// clean up if we no longer need it
e.DisposeTimer();
}
else
{
System.Diagnostics.Trace.WriteLine($"Second timer tick: {e.Ticks}");
}
}, 1500)
.Prompt("\nPress Enter to stop the timers: ")
// makes sure that any remaining timer is disposed off
.ClearTimers()
.WriteSuccess("Timers cleared!\n");
}
}
}
Based on First answer here is the complete image selection options:
Filter = @"|All Image Files|*.BMP;*.bmp;*.JPG;*.JPEG*.jpg;*.jpeg;*.PNG;*.png;*.GIF;*.gif;*.tif;*.tiff;*.ico;*.ICO
|PNG|*.PNG;*.png
|JPEG|*.JPG;*.JPEG*.jpg;*.jpeg
|Bitmap(.BMP,.bmp)|*.BMP;*.bmp
|GIF|*.GIF;*.gif
|TIF|*.tif;*.tiff
|ICO|*.ico;*.ICO";
You just need the $('button').prop('disabled', true);
part, the button will automatically take the disabled class.
Use .length
to count number of characters, and $.trim()
function to remove spaces, and replace(/ /g,'')
to replace multiple spaces with just one. Here is an example:
var str = " Hel lo ";
console.log(str.length);
console.log($.trim(str).length);
console.log(str.replace(/ /g,'').length);
Output:
20
7
5
Source: How to count number of characters in a string with JQuery
Preface
Much of the information in this answer has been gathered based on experiments run on a Vista machine. Unless explicitly stated otherwise, I have not confirmed whether the information applies to other Windows versions.
FINDSTR output
The documentation never bothers to explain the output of FINDSTR. It alludes to the fact that matching lines are printed, but nothing more.
The format of matching line output is as follows:
filename:lineNumber:lineOffset:text
where
fileName: = The name of the file containing the matching line. The file name is not printed if the request was explicitly for a single file, or if searching piped input or redirected input. When printed, the fileName will always include any path information provided. Additional path information will be added if the /S
option is used. The printed path is always relative to the provided path, or relative to the current directory if none provided.
Note - The filename prefix can be avoided when searching multiple files by using the non-standard (and poorly documented) wildcards <
and >
. The exact rules for how these wildcards work can be found here. Finally, you can look at this example of how the non-standard wildcards work with FINDSTR.
lineNumber: = The line number of the matching line represented as a decimal value with 1 representing the 1st line of the input. Only printed if /N
option is specified.
lineOffset: = The decimal byte offset of the start of the matching line, with 0 representing the 1st character of the 1st line. Only printed if /O
option is specified. This is not the offset of the match within the line. It is the number of bytes from the beginning of the file to the beginning of the line.
text = The binary representation of the matching line, including any <CR> and/or <LF>. Nothing is left out of the binary output, such that this example that matches all lines will produce an exact binary copy of the original file.
FINDSTR "^" FILE >FILE_COPY
The /A option sets the color of the fileName:, lineNumber:, and lineOffset: output only. The text of the matching line is always output with the current console color. The /A option only has effect when output is displayed directly to the console. The /A option has no effect if the output is redirected to a file or piped. See the 2018-08-18 edit in Aacini's answer for a description of the buggy behavior when output is redirected to CON.
Most control characters and many extended ASCII characters display as dots on XP
FINDSTR on XP displays most non-printable control characters from matching lines as dots (periods) on the screen. The following control characters are exceptions; they display as themselves: 0x09 Tab, 0x0A LineFeed, 0x0B Vertical Tab, 0x0C Form Feed, 0x0D Carriage Return.
XP FINDSTR also converts a number of extended ASCII characters to dots as well. The extended ASCII characters that display as dots on XP are the same as those that are transformed when supplied on the command line. See the "Character limits for command line parameters - Extended ASCII transformation" section, later in this post
Control characters and extended ASCII are not converted to dots on XP if the output is piped, redirected to a file, or within a FOR IN() clause.
Vista and Windows 7 always display all characters as themselves, never as dots.
Return Codes (ERRORLEVEL)
/A:xx
option/L
and /R
both specified/A:
, /F:
, /C:
, /D:
, or /G:
/F:file
or /G:file
not foundSource of data to search (Updated based on tests with Windows 7)
Findstr can search data from only one of the following sources:
filenames specified as arguments and/or using the /F:file
option.
stdin via redirection findstr "searchString" <file
data stream from a pipe type file | findstr "searchString"
Arguments/options take precedence over redirection, which takes precedence over piped data.
File name arguments and /F:file
may be combined. Multiple file name arguments may be used. If multiple /F:file
options are specified, then only the last one is used. Wild cards are allowed in filename arguments, but not within the file pointed to by /F:file
.
Source of search strings (Updated based on tests with Windows 7)
The /G:file
and /C:string
options may be combined. Multiple /C:string
options may be specified. If multiple /G:file
options are specified, then only the last one is used. If either /G:file
or /C:string
is used, then all non-option arguments are assumed to be files to search. If neither /G:file
nor /C:string
is used, then the first non-option argument is treated as a space delimited list of search terms.
File names must not be quoted within the file when using the /F:FILE
option.
File names may contain spaces and other special characters. Most commands require that such file names are quoted. But the FINDSTR /F:files.txt
option requires that filenames within files.txt must NOT be quoted. The file will not be found if the name is quoted.
BUG - Short 8.3 filenames can break the /D
and /S
options
As with all Windows commands, FINDSTR will attempt to match both the long name and the short 8.3 name when looking for files to search. Assume the current folder contains the following non-empty files:
b1.txt
b.txt2
c.txt
The following command will successfully find all 3 files:
findstr /m "^" *.txt
b.txt2
matches because the corresponding short name B9F64~1.TXT
matches. This is consistent with the behavior of all other Windows commands.
But a bug with the /D
and /S
options causes the following commands to only find b1.txt
findstr /m /d:. "^" *.txt
findstr /m /s "^" *.txt
The bug prevents b.txt2
from being found, as well as all file names that sort after b.txt2
within the same directory. Additional files that sort before, like a.txt
, are found. Additional files that sort later, like d.txt
, are missed once the bug has been triggered.
Each directory searched is treated independently. For example, the /S
option would successfully begin searching in a child folder after failing to find files in the parent, but once the bug causes a short file name to be missed in the child, then all subsequent files in that child folder would also be missed.
The commands work bug free if the same file names are created on a machine that has NTFS 8.3 name generation disabled. Of course b.txt2
would not be found, but c.txt
would be found properly.
Not all short names trigger the bug. All instances of bugged behavior I have seen involve an extension that is longer than 3 characters with a short 8.3 name that begins the same as a normal name that does not require an 8.3 name.
The bug has been confirmed on XP, Vista, and Windows 7.
Non-Printable characters and the /P
option
The /P
option causes FINDSTR to skip any file that contains any of the following decimal byte codes:
0-7, 14-25, 27-31.
Put another way, the /P
option will only skip files that contain non-printable control characters. Control characters are codes less than or equal to 31 (0x1F). FINDSTR treats the following control characters as printable:
8 0x08 backspace
9 0x09 horizontal tab
10 0x0A line feed
11 0x0B vertical tab
12 0x0C form feed
13 0x0D carriage return
26 0x1A substitute (end of text)
All other control characters are treated as non-printable, the presence of which causes the /P
option to skip the file.
Piped and Redirected input may have <CR><LF>
appended
If the input is piped in and the last character of the stream is not <LF>
, then FINDSTR will automatically append <CR><LF>
to the input. This has been confirmed on XP, Vista and Windows 7. (I used to think that the Windows pipe was responsible for modifying the input, but I have since discovered that FINDSTR is actually doing the modification.)
The same is true for redirected input on Vista. If the last character of a file used as redirected input is not <LF>
, then FINDSTR will automatically append <CR><LF>
to the input. However, XP and Windows 7 do not alter redirected input.
FINDSTR hangs on XP and Windows 7 if redirected input does not end with <LF>
This is a nasty "feature" on XP and Windows 7. If the last character of a file used as redirected input does not end with <LF>
, then FINDSTR will hang indefinitely once it reaches the end of the redirected file.
Last line of Piped data may be ignored if it consists of a single character
If the input is piped in and the last line consists of a single character that is not followed by <LF>
, then FINDSTR completely ignores the last line.
Example - The first command with a single character and no <LF>
fails to match, but the second command with 2 characters works fine, as does the third command that has one character with terminating newline.
> set /p "=x" <nul | findstr "^"
> set /p "=xx" <nul | findstr "^"
xx
> echo x| findstr "^"
x
Reported by DosTips user Sponge Belly at new findstr bug. Confirmed on XP, Windows 7 and Windows 8. Haven't heard about Vista yet. (I no longer have Vista to test).
Option syntax
Option letters are not case sensitive, so /i
and /I
are equivalent.
Options can be prefixed with either /
or -
Options may be concatenated after a single /
or -
. However, the concatenated option list may contain at most one multicharacter option such as OFF or F:, and the multi-character option must be the last option in the list.
The following are all equivalent ways of expressing a case insensitive regex search for any line that contains both "hello" and "goodbye" in any order
/i /r /c:"hello.*goodbye" /c:"goodbye.*hello"
-i -r -c:"hello.*goodbye" /c:"goodbye.*hello"
/irc:"hello.*goodbye" /c:"goodbye.*hello"
Options may also be quoted. So /i
, -i
, "/i"
and "-i"
are all equivalent. Likewise, /c:string
, "/c":string
, "/c:"string
and "/c:string"
are all equivalent.
If a search string begins with a /
or -
literal, then the /C
or /G
option must be used. Thanks to Stephan for reporting this in a comment (since deleted).
Search String length limits
On Vista the maximum allowed length for a single search string is 511 bytes. If any search string exceeds 511 then the result is a FINDSTR: Search string too long.
error with ERRORLEVEL 2.
When doing a regular expression search, the maximum search string length is 254. A regular expression with length between 255 and 511 will result in a FINDSTR: Out of memory
error with ERRORLEVEL 2. A regular expression length >511 results in the FINDSTR: Search string too long.
error.
On Windows XP the search string length is apparently shorter. Findstr error: "Search string too long": How to extract and match substring in "for" loop? The XP limit is 127 bytes for both literal and regex searches.
Line Length limits
Files specified as a command line argument or via the /F:FILE option have no known line length limit. Searches were successfully run against a 128MB file that did not contain a single <LF>.
Piped data and Redirected input is limited to 8191 bytes per line. This limit is a "feature" of FINDSTR. It is not inherent to pipes or redirection. FINDSTR using redirected stdin or piped input will never match any line that is >=8k bytes. Lines >= 8k generate an error message to stderr, but ERRORLEVEL is still 0 if the search string is found in at least one line of at least one file.
Default type of search: Literal vs Regular Expression
/C:"string"
- The default is /L literal. Explicitly combining the /L option with /C:"string" certainly works but is redundant.
"string argument"
- The default depends on the content of the very first search string. (Remember that <space> is used to delimit search strings.) If the first search string is a valid regular expression that contains at least one un-escaped meta-character, then all search strings are treated as regular expressions. Otherwise all search strings are treated as literals. For example, "51.4 200"
will be treated as two regular expressions because the first string contains an un-escaped dot, whereas "200 51.4"
will be treated as two literals because the first string does not contain any meta-characters.
/G:file
- The default depends on the content of the first non-empty line in the file. If the first search string is a valid regular expression that contains at least one un-escaped meta-character, then all search strings are treated as regular expressions. Otherwise all search strings are treated as literals.
Recommendation - Always explicitly specify /L
literal option or /R
regular expression option when using "string argument"
or /G:file
.
BUG - Specifying multiple literal search strings can give unreliable results
The following simple FINDSTR example fails to find a match, even though it should.
echo ffffaaa|findstr /l "ffffaaa faffaffddd"
This bug has been confirmed on Windows Server 2003, Windows XP, Vista, and Windows 7.
Based on experiments, FINDSTR may fail if all of the following conditions are met:
/I
option)In every failure I have seen, it is always one of the shorter search strings that fails.
For more info see Why doesn't this FINDSTR example with multiple literal search strings find a match?
Quotes and backslahses within command line arguments
Note - User MC ND's comments reflect the actual horrifically complicated rules for this section. There are 3 distinct parsing phases involved:
- First cmd.exe may require some quotes to be escaped as ^" (really nothing to do with FINDSTR)
- Next FINDSTR uses the pre 2008 MS C/C++ argument parser, which has special rules for " and \
- After the argument parser finishes, FINDSTR additionally treats \ followed by an alpha-numeric character as literal, but \ followed by non-alpha-numeric character as an escape character
The remainder of this highlighted section is not 100% correct. It can serve as a guide for many situations, but the above rules are required for total understanding.
Escaping Quote within command line search strings
Quotes within command line search strings must be escaped with backslash like\"
. This is true for both literal and regex search strings. This information has been confirmed on XP, Vista, and Windows 7.Note: The quote may also need to be escaped for the CMD.EXE parser, but this has nothing to do with FINDSTR. For example, to search for a single quote you could use:
FINDSTR \^" file && echo found || echo not found
Escaping Backslash within command line literal search strings
Backslash in a literal search string can normally be represented as\
or as\\
. They are typically equivalent. (There may be unusual cases in Vista where the backslash must always be escaped, but I no longer have a Vista machine to test).But there are some special cases:
When searching for consecutive backslashes, all but the last must be escaped. The last backslash may optionally be escaped.
\\
can be coded as\\\
or\\\\
\\\
can be coded as\\\\\
or\\\\\\
Searching for one or more backslashes before a quote is bizarre. Logic would suggest that the quote must be escaped, and each of the leading backslashes would need to be escaped, but this does not work! Instead, each of the leading backslashes must be double escaped, and the quote is escaped normally:
\"
must be coded as\\\\\"
\\"
must be coded as\\\\\\\\\"
As previously noted, one or more escaped quotes may also require escaping with
^
for the CMD parserThe info in this section has been confirmed on XP and Windows 7.
Escaping Backslash within command line regex search strings
Vista only: Backslash in a regex must be either double escaped like
\\\\
, or else single escaped within a character class set like[\\]
XP and Windows 7: Backslash in a regex can always be represented as
[\\]
. It can normally be represented as\\
. But this never works if the backslash precedes an escaped quote.One or more backslashes before an escaped quote must either be double escaped, or else coded as
[\\]
\"
may be coded as\\\\\"
or[\\]\"
\\"
may be coded as\\\\\\\\\"
or[\\][\\]\"
or\\[\\]\"
Escaping Quote and Backslash within /G:FILE literal search strings
Standalone quotes and backslashes within a literal search string file specified by /G:file need not be escaped, but they can be.
"
and \"
are equivalent.
\
and \\
are equivalent.
If the intent is to find \\, then at least the leading backslash must be escaped. Both \\\
and \\\\
work.
If the intent is to find ", then at least the leading backslash must be escaped. Both \\"
and \\\"
work.
Escaping Quote and Backslash within /G:FILE regex search strings
This is the one case where the escape sequences work as expected based on the documentation. Quote is not a regex metacharacter, so it need not be escaped (but can be). Backslash is a regex metacharacter, so it must be escaped.
Character limits for command line parameters - Extended ASCII transformation
The null character (0x00) cannot appear in any string on the command line. Any other single byte character can appear in the string (0x01 - 0xFF). However, FINDSTR converts many extended ASCII characters it finds within command line parameters into other characters. This has a major impact in two ways:
Many extended ASCII characters will not match themselves if used as a search string on the command line. This limitation is the same for literal and regex searches. If a search string must contain extended ASCII, then the /G:FILE
option should be used instead.
FINDSTR may fail to find a file if the name contains extended ASCII characters and the file name is specified on the command line. If a file to be searched contains extended ASCII in the name, then the /F:FILE
option should be used instead.
Here is a complete list of extended ASCII character transformations that FINDSTR performs on command line strings. Each character is represented as the decimal byte code value. The first code represents the character as supplied on the command line, and the second code represents the character it is transformed into. Note - this list was compiled on a U.S machine. I do not know what impact other languages may have on this list.
158 treated as 080 199 treated as 221 226 treated as 071
169 treated as 170 200 treated as 043 227 treated as 112
176 treated as 221 201 treated as 043 228 treated as 083
177 treated as 221 202 treated as 045 229 treated as 115
178 treated as 221 203 treated as 045 231 treated as 116
179 treated as 221 204 treated as 221 232 treated as 070
180 treated as 221 205 treated as 045 233 treated as 084
181 treated as 221 206 treated as 043 234 treated as 079
182 treated as 221 207 treated as 045 235 treated as 100
183 treated as 043 208 treated as 045 236 treated as 056
184 treated as 043 209 treated as 045 237 treated as 102
185 treated as 221 210 treated as 045 238 treated as 101
186 treated as 221 211 treated as 043 239 treated as 110
187 treated as 043 212 treated as 043 240 treated as 061
188 treated as 043 213 treated as 043 242 treated as 061
189 treated as 043 214 treated as 043 243 treated as 061
190 treated as 043 215 treated as 043 244 treated as 040
191 treated as 043 216 treated as 043 245 treated as 041
192 treated as 043 217 treated as 043 247 treated as 126
193 treated as 045 218 treated as 043 249 treated as 250
194 treated as 045 219 treated as 221 251 treated as 118
195 treated as 043 220 treated as 095 252 treated as 110
196 treated as 045 222 treated as 221 254 treated as 221
197 treated as 043 223 treated as 095
198 treated as 221 224 treated as 097
Any character >0 not in the list above is treated as itself, including <CR>
and <LF>
. The easiest way to include odd characters like <CR>
and <LF>
is to get them into an environment variable and use delayed expansion within the command line argument.
Character limits for strings found in files specified by /G:FILE and /F:FILE options
The nul (0x00) character can appear in the file, but it functions like the C string terminator. Any characters after a nul character are treated as a different string as if they were on another line.
The <CR>
and <LF>
characters are treated as line terminators that terminate a string, and are not included in the string.
All other single byte characters are included perfectly within a string.
Searching Unicode files
FINDSTR cannot properly search most Unicode (UTF-16, UTF-16LE, UTF-16BE, UTF-32) because it cannot search for nul bytes and Unicode typically contains many nul bytes.
However, the TYPE command converts UTF-16LE with BOM to a single byte character set, so a command like the following will work with UTF-16LE with BOM.
type unicode.txt|findstr "search"
Note that Unicode code points that are not supported by your active code page will be converted to ?
characters.
It is possible to search UTF-8 as long as your search string contains only ASCII. However, the console output of any multi-byte UTF-8 characters will not be correct. But if you redirect the output to a file, then the result will be correctly encoded UTF-8. Note that if the UTF-8 file contains a BOM, then the BOM will be considered as part of the first line, which could throw off a search that matches the beginning of a line.
It is possible to search multi-byte UTF-8 characters if you put your search string in a UTF-8 encoded search file (without BOM), and use the /G option.
End Of Line
FINDSTR breaks lines immediately after every <LF>. The presence or absence of <CR> has no impact on line breaks.
Searching across line breaks
As expected, the .
regex metacharacter will not match <CR> or <LF>. But it is possible to search across a line break using a command line search string. Both the <CR> and <LF> characters must be matched explicitly. If a multi-line match is found, only the 1st line of the match is printed. FINDSTR then doubles back to the 2nd line in the source and begins the search all over again - sort of a "look ahead" type feature.
Assume TEXT.TXT has these contents (could be Unix or Windows style)
A
A
A
B
A
A
Then this script
@echo off
setlocal
::Define LF variable containing a linefeed (0x0A)
set LF=^
::Above 2 blank lines are critical - do not remove
::Define CR variable containing a carriage return (0x0D)
for /f %%a in ('copy /Z "%~dpf0" nul') do set "CR=%%a"
setlocal enableDelayedExpansion
::regex "!CR!*!LF!" will match both Unix and Windows style End-Of-Line
findstr /n /r /c:"A!CR!*!LF!A" TEST.TXT
gives these results
1:A
2:A
5:A
Searching across line breaks using the /G:FILE option is imprecise because the only way to match <CR> or <LF> is via a regex character class range expression that sandwiches the EOL characters.
[<TAB>-<0x0B>]
matches <LF>, but it also matches <TAB> and <0x0B>
[<0x0C>-!]
matches <CR>, but it also matches <0x0C> and !
Note - the above are symbolic representations of the regex byte stream since I can't graphically represent the characters.
Aggregation of all postgres sessions per their status (how many are idle, how many doing something...)
select state, count(*) from pg_stat_activity where pid <> pg_backend_pid() group by 1 order by 1;
This is a simple solution that exports an array to csv string:
function array2csv($data, $delimiter = ',', $enclosure = '"', $escape_char = "\\")
{
$f = fopen('php://memory', 'r+');
foreach ($data as $item) {
fputcsv($f, $item, $delimiter, $enclosure, $escape_char);
}
rewind($f);
return stream_get_contents($f);
}
$list = array (
array('aaa', 'bbb', 'ccc', 'dddd'),
array('123', '456', '789'),
array('"aaa"', '"bbb"')
);
var_dump(array2csv($list));
The thing that worked for me:
Put your file inside of the folder specified in secure-file-priv
.
To find that type:
mysql> show variables like "secure_file_priv";
Check if you have local_infile = 1
.
Do that typing:
mysql> show variables like "local_infile";
If you get:
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| local_infile | OFF |
+---------------+-------+
Then set it to one typing:
mysql> set global local_infile = 1;
Specify the full path for your file. In my case:
mysql> load data infile "C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/file.txt" into table test;
This syntax will work in XHTML and does not work in IE6, but this is a non-javascript way:
option[selected] { background: #f00; }
If you want to do this on-the-fly, then you would have to go with javascript, the way others have suggested....
The accepted answer is good and simple approach but have limitation of information it can hold with tag. As sometime more information needed.
You can create a custom button and add properties as many as you like they will hold info you wanna pass:
class CustomButton: UIButton {
var orderNo = -1
var clientCreatedDate = Date(timeIntervalSince1970: 1)
}
Make button of this type in Storyboard or programmatically:
protocol OrderStatusDelegate: class {
func orderStatusUpdated(orderNo: Int, createdDate: Date)
}
class OrdersCell: UITableViewCell {
@IBOutlet weak var btnBottom: CustomButton!
weak var delegate: OrderStatusDelegate?
}
While configuring the cell add values to these properties:
func configureCell(order: OrderRealm, index: Int) {
btnBottom.orderNo = Int(order.orderNo)
btnBottom.clientCreatedDate = order.clientCreatedDate
}
When tapped access those properties in button's action (within cell's subclass) that can be sent through delegate:
@IBAction func btnBumpTapped(_ sender: Any) {
if let button = sender as? CustomButton {
let orderNo = button.orderNo
let createdDate = button.clientCreatedDate
delegate?.orderStatusUpdated(orderNo: orderNo, createdDate: createdDate)
}
}
VBA stands for Visual Basic for Applications and so is the small "for applications" scripting brother of VB. VBA is indeed available in Excel, but also in the other office applications.
With VB, one can create a stand-alone windows application, which is not possible with VBA.
It is possible for developers however to "embed" VBA in their own applications, as a scripting language to automate those applications.
Edit: From the VBA FAQ:
Q. What is Visual Basic for Applications?
A. Microsoft Visual Basic for Applications (VBA) is an embeddable programming environment designed to enable developers to build custom solutions using the full power of Microsoft Visual Basic. Developers using applications that host VBA can automate and extend the application functionality, shortening the development cycle of custom business solutions.
Note that VB.NET is even another language, which only shares syntax with VB.
Use raw_input
instead of input
:)
If you use
input
, then the data you type is is interpreted as a Python Expression which means that you end up with gawd knows what type of object in your target variable, and a heck of a wide range of exceptions that can be generated. So you should NOT useinput
unless you're putting something in for temporary testing, to be used only by someone who knows a bit about Python expressions.
raw_input
always returns a string because, heck, that's what you always type in ... but then you can easily convert it to the specific type you want, and catch the specific exceptions that may occur. Hopefully with that explanation, it's a no-brainer to know which you should use.
Note: this is only for Python 2. For Python 3, raw_input()
has become plain input()
and the Python 2 input()
has been removed.
What I found works in the form is str_replace('<br>', PHP_EOL, $textarea);
Had the same problem, it turned out it was the WindowsFirewall blocking connections. Try to disable WindowsFirewall for a while to see if helps and if it is the problem open ports as needed.
I also had problem understanding next() , but this helped
var app = require("express")();
app.get("/", function(httpRequest, httpResponse, next){
httpResponse.write("Hello");
next(); //remove this and see what happens
});
app.get("/", function(httpRequest, httpResponse, next){
httpResponse.write(" World !!!");
httpResponse.end();
});
app.listen(8080);
Use of Pandas module will be much easier.
import pandas as pd
f=pd.read_csv("test.csv")
keep_col = ['day','month','lat','long']
new_f = f[keep_col]
new_f.to_csv("newFile.csv", index=False)
And here is short explanation:
>>>f=pd.read_csv("test.csv")
>>> f
day month year lat long
0 1 4 2001 45 120
1 2 4 2003 44 118
>>> keep_col = ['day','month','lat','long']
>>> f[keep_col]
day month lat long
0 1 4 45 120
1 2 4 44 118
>>>
I m agree with @ReNjITh.R answer but If you want to display error message just beside textbox. Just like below
<html>
<head>
<script type="text/javascript">
function validate()
{
if(myform.fname.value.length==0)
{
document.getElementById('errfn').innerHTML="this is invalid name";
}
}
</script>
</head>
<body>
<form name="myform">
First_Name
<input type=text id=fname name=fname onblur="validate()" /><span id="errfn"></span>
<br> <br>
Last_Name
<input type=text id=lname name=lname onblur="validate()"/><br>
<input type=button value=check />
</form>
</body>
Try this:
Response.Redirect(Request.Url.AbsoluteUri);
This would definitely work. At least in Chrome. Right click on the "Raw" icon -> Save Link As.
Using dplyr
(a bit like sapply..)
df2 <- mutate_all(df1, function(x) as.numeric(as.character(x)))
which gives:
glimpse(df2)
Observations: 4
Variables: 2
$ a <dbl> 0.01, 0.02, 0.03, 0.04
$ b <dbl> 2, 4, 5, 7
from your df1 which was:
glimpse(df1)
Observations: 4
Variables: 2
$ a <fctr> 0.01, 0.02, 0.03, 0.04
$ b <dbl> 2, 4, 5, 7
Try this query (replace t.eventsDate
with e.eventsDate
):
SELECT e FROM Events e WHERE e.eventsDate BETWEEN :startDate AND :endDate
They are both the same functionally but the .min one has all unnecessary characters removed in order to make the file size smaller.
Just to point out as well, you are better using the minified version (.min) for your live environment as Google are now checking on page loading times. Having all your JS file minified means they will load faster and will score you more brownie points.
You can get an addon for Mozilla called Page Speed that will look through your site and show you all the .JS files and provide minified versions (amongst other things).
In addition to the answers above:
$ python3 -m timeit -s 'import os' 'os.environ.get("TERM_PROGRAM")'
200000 loops, best of 5: 1.65 usec per loop
$ python3 -m timeit -s 'import os' 'os.getenv("TERM_PROGRAM")'
200000 loops, best of 5: 1.83 usec per loop
You can't "skip" based on the size of the collection, because it will not take the query conditions into account.
The correct solution is to sort from the desired end-point, limit the size of the result set, then adjust the order of the results if necessary.
Here is an example, based on real-world code.
var query = collection.find( { conditions } ).sort({$natural : -1}).limit(N);
query.exec(function(err, results) {
if (err) {
}
else if (results.length == 0) {
}
else {
results.reverse(); // put the results into the desired order
results.forEach(function(result) {
// do something with each result
});
}
});
I have used Dropbox as my Prive or protected svn. Try the link below. http://foyzulkarim.blogspot.com/2012/12/dropbox-as-svn-repository.html
This answer comes from @webology on Twitter:
$ sudo apt-get install python-setuptools
$ sudo easy_install pip
$ sudo pip install --upgrade pip virtualenv virtualenvwrapper
My added notes:
If there are no spaces in paths, and you are interested, like I was, in files of specific extension only, you can use
git checkout otherBranch -- $(git ls-tree --name-only -r otherBranch | egrep '*.java')
The easiest way according to me will be using SDWebImage
Add this to your pod file
pod 'SDWebImage', '~> 4.0'
Run pod install
Now import SDWebImage
import SDWebImage
Now for setting image from url
imageView.sd_setImage(with: URL(string: "http://www.domain/path/to/image.jpg"), placeholderImage: UIImage(named: "placeholder.png"))
It will show placeholder image but when image is downloaded it will show the image from url .Your app will never crash
This are the main feature of SDWebImage
Categories for UIImageView, UIButton, MKAnnotationView adding web image and cache management
An asynchronous image downloader
An asynchronous memory + disk image caching with automatic cache expiration handling
A background image decompression
A guarantee that the same URL won't be downloaded several times
A guarantee that bogus URLs won't be retried again and again
A guarantee that main thread will never be blocked Performances!
Use GCD and ARC
To know more https://github.com/rs/SDWebImage
Based on the ObjectDumper of the LINQ samples I created a version that dumps each of the properties on its own line.
This Class Sample
namespace MyNamespace
{
public class User
{
public string FirstName { get; set; }
public string LastName { get; set; }
public Address Address { get; set; }
public IList<Hobby> Hobbies { get; set; }
}
public class Hobby
{
public string Name { get; set; }
}
public class Address
{
public string Street { get; set; }
public int ZipCode { get; set; }
public string City { get; set; }
}
}
has an output of
{MyNamespace.User}
FirstName: "Arnold"
LastName: "Schwarzenegger"
Address: { }
{MyNamespace.Address}
Street: "6834 Hollywood Blvd"
ZipCode: 90028
City: "Hollywood"
Hobbies: ...
{MyNamespace.Hobby}
Name: "body building"
Here is the code.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
public class ObjectDumper
{
private int _level;
private readonly int _indentSize;
private readonly StringBuilder _stringBuilder;
private readonly List<int> _hashListOfFoundElements;
private ObjectDumper(int indentSize)
{
_indentSize = indentSize;
_stringBuilder = new StringBuilder();
_hashListOfFoundElements = new List<int>();
}
public static string Dump(object element)
{
return Dump(element, 2);
}
public static string Dump(object element, int indentSize)
{
var instance = new ObjectDumper(indentSize);
return instance.DumpElement(element);
}
private string DumpElement(object element)
{
if (element == null || element is ValueType || element is string)
{
Write(FormatValue(element));
}
else
{
var objectType = element.GetType();
if (!typeof(IEnumerable).IsAssignableFrom(objectType))
{
Write("{{{0}}}", objectType.FullName);
_hashListOfFoundElements.Add(element.GetHashCode());
_level++;
}
var enumerableElement = element as IEnumerable;
if (enumerableElement != null)
{
foreach (object item in enumerableElement)
{
if (item is IEnumerable && !(item is string))
{
_level++;
DumpElement(item);
_level--;
}
else
{
if (!AlreadyTouched(item))
DumpElement(item);
else
Write("{{{0}}} <-- bidirectional reference found", item.GetType().FullName);
}
}
}
else
{
MemberInfo[] members = element.GetType().GetMembers(BindingFlags.Public | BindingFlags.Instance);
foreach (var memberInfo in members)
{
var fieldInfo = memberInfo as FieldInfo;
var propertyInfo = memberInfo as PropertyInfo;
if (fieldInfo == null && propertyInfo == null)
continue;
var type = fieldInfo != null ? fieldInfo.FieldType : propertyInfo.PropertyType;
object value = fieldInfo != null
? fieldInfo.GetValue(element)
: propertyInfo.GetValue(element, null);
if (type.IsValueType || type == typeof(string))
{
Write("{0}: {1}", memberInfo.Name, FormatValue(value));
}
else
{
var isEnumerable = typeof(IEnumerable).IsAssignableFrom(type);
Write("{0}: {1}", memberInfo.Name, isEnumerable ? "..." : "{ }");
var alreadyTouched = !isEnumerable && AlreadyTouched(value);
_level++;
if (!alreadyTouched)
DumpElement(value);
else
Write("{{{0}}} <-- bidirectional reference found", value.GetType().FullName);
_level--;
}
}
}
if (!typeof(IEnumerable).IsAssignableFrom(objectType))
{
_level--;
}
}
return _stringBuilder.ToString();
}
private bool AlreadyTouched(object value)
{
if (value == null)
return false;
var hash = value.GetHashCode();
for (var i = 0; i < _hashListOfFoundElements.Count; i++)
{
if (_hashListOfFoundElements[i] == hash)
return true;
}
return false;
}
private void Write(string value, params object[] args)
{
var space = new string(' ', _level * _indentSize);
if (args != null)
value = string.Format(value, args);
_stringBuilder.AppendLine(space + value);
}
private string FormatValue(object o)
{
if (o == null)
return ("null");
if (o is DateTime)
return (((DateTime)o).ToShortDateString());
if (o is string)
return string.Format("\"{0}\"", o);
if (o is char && (char)o == '\0')
return string.Empty;
if (o is ValueType)
return (o.ToString());
if (o is IEnumerable)
return ("...");
return ("{ }");
}
}
and you can use it like that:
var dump = ObjectDumper.Dump(user);
Edit
I would think your own suggestion is correct, however the xml is not quite valid. If you are running the //book[title[@lang='it']]
on <root>[Your"XML"Here]</root>
then the free online xPath testers such as one here will find the expected result.
The most trivial way to upload a binary file to an FTP server using PowerShell is using WebClient.UploadFile
:
$client = New-Object System.Net.WebClient
$client.Credentials = New-Object System.Net.NetworkCredential("username", "password")
$client.UploadFile("ftp://ftp.example.com/remote/path/file.zip", "C:\local\path\file.zip")
If you need a greater control, that WebClient
does not offer (like TLS/SSL encryption, etc), use FtpWebRequest
. Easy way is to just copy a FileStream
to FTP stream using Stream.CopyTo
:
$request = [Net.WebRequest]::Create("ftp://ftp.example.com/remote/path/file.zip")
$request.Credentials = New-Object System.Net.NetworkCredential("username", "password")
$request.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile
$fileStream = [System.IO.File]::OpenRead("C:\local\path\file.zip")
$ftpStream = $request.GetRequestStream()
$fileStream.CopyTo($ftpStream)
$ftpStream.Dispose()
$fileStream.Dispose()
If you need to monitor an upload progress, you have to copy the contents by chunks yourself:
$request = [Net.WebRequest]::Create("ftp://ftp.example.com/remote/path/file.zip")
$request.Credentials = New-Object System.Net.NetworkCredential("username", "password")
$request.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile
$fileStream = [System.IO.File]::OpenRead("C:\local\path\file.zip")
$ftpStream = $request.GetRequestStream()
$buffer = New-Object Byte[] 10240
while (($read = $fileStream.Read($buffer, 0, $buffer.Length)) -gt 0)
{
$ftpStream.Write($buffer, 0, $read)
$pct = ($fileStream.Position / $fileStream.Length)
Write-Progress `
-Activity "Uploading" -Status ("{0:P0} complete:" -f $pct) `
-PercentComplete ($pct * 100)
}
$ftpStream.Dispose()
$fileStream.Dispose()
If you want to upload all files from a folder, see
PowerShell Script to upload an entire folder to FTP
There is no unmarshal(String)
method. You should use a Reader
:
Person person = (Person) unmarshaller.unmarshal(new StringReader("xml string"));
But usually you are getting that string from somewhere, for example a file. If that's the case, better pass the FileReader
itself.
This worked for me best for all navigation changes including hash navigation
constructor(private route: ActivatedRoute) {}
ngOnInit() {
this._sub = this.route.fragment.subscribe((hash: string) => {
if (hash) {
const cmp = document.getElementById(hash);
if (cmp) {
cmp.scrollIntoView();
}
} else {
window.scrollTo(0, 0);
}
});
}
Marc B's answer is mostly correct.
If you are using a nonbinary string (CHAR, VARCHAR, TEXT), comparisons are case-insensitive, per the default collation.
If you are using a binary string (BINARY, VARBINARY, BLOB), comparisons are case-sensitive, so you'll need to use LOWER
as described in other answers.
If you are not using the default collation and you are using a nonbinary string, case sensitivity is decided by the chosen collation.
Source: https://dev.mysql.com/doc/refman/8.0/en/case-sensitivity.html. Read closely. Some others have mistaken it to say that comparisons are necessarily case-sensitive or insensitive. This is not the case.
The thing about collations is that although the database has its own collation, every table, and every column can have its own collation. If not specified it takes the default of its parent object, but can be different.
When you change collation of the database, it will be the new default for all new tables and columns, but it doesn't change the collation of existing objects inside the database. You have to go and change manually the collation of every table and column.
Luckily there are scripts available on the internet that can do the job. I am not going to recommend any as I haven't tried them but here are few links:
http://www.codeproject.com/Articles/302405/The-Easy-way-of-changing-Collation-of-all-Database
Update Collation of all fields in database on the fly
http://www.sqlservercentral.com/Forums/Topic820675-146-1.aspx
If you need to have different collation on two objects or can't change collations - you can still JOIN
between them using COLLATE
command, and choosing the collation you want for join.
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE Latin1_General_CI_AS
or using default database collation:
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE DATABASE_DEFAULT
Well, did you DO what the error says? You go to some length telling about installation, but what about the obvious?
You can reuse your confirm:
function doConfirm(body, $_nombrefuncion)
{ var param = undefined;
var $confirm = $("<div id='confirm' class='hide'></div>").dialog({
autoOpen: false,
buttons: {
Yes: function() {
param = true;
$_nombrefuncion(param);
$(this).dialog('close');
},
No: function() {
param = false;
$_nombrefuncion(param);
$(this).dialog('close');
}
}
});
$confirm.html("<h3>"+body+"<h3>");
$confirm.dialog('open');
};
// for this form just u must change or create a new function for to reuse the confirm
function resultadoconfirmresetVTyBFD(param){
$fecha = $("#asigfecha").val();
if(param ==true){
// DO THE CONFIRM
}
}
//Now just u must call the function doConfirm
doConfirm('body message',resultadoconfirmresetVTyBFD);
Just download composer and install phpMailler autoloader.php
https://github.com/PHPMailer/PHPMailer/blob/master/composer.json
once composer is loaded use below code:
require_once("phpMailer/class.phpmailer.php");
require_once("phpMailer/PHPMailerAutoload.php");
$mail = new PHPMailer(true);
$mail->SMTPDebug = true;
$mail->SMTPSecure = "tls";
$mail->SMTPAuth = true;
$mail->Username = 'youremail id';
$mail->Password = 'youremail password';
$mail_from = "youremail id";
$subject = "Your Subject";
$body = "email body";
$mail_to = "receiver_email";
$mail->IsSMTP();
try {
$mail->Host= "smtp.your.com";
$mail->Port = "Your SMTP Port No";// ssl port :465,
$mail->Debugoutput = 'html';
$mail->AddAddress($mail_to, "receiver_name");
$mail->SetFrom($mail_from,'AmpleChat Team');
$mail->Subject = $subject;
$mail->MsgHTML($body);
$mail->Send();
$emailreturn = 200;
} catch (phpmailerException $e) {
$emailreturn = $e->errorMessage();
} catch (Exception $e) {
$emailreturn = $e->getMessage();
}
echo $emailreturn;
Hope this will work.
Not a full answer but perhaps a useful hint. If it is really the first item you want*, then
next(iter(q))
is much faster than
list(q)[0]
for large dicts, since the whole thing doesn't have to be stored in memory.
For 10.000.000 items I found it to be almost 40.000 times faster.
*The first item in case of a dict being just a pseudo-random item before Python 3.6 (after that it's ordered in the standard implementation, although it's not advised to rely on it).
I know the topic is old, but you can declare the Ajax as a variable, then use a function to call the variable on the desired content. Keep in mind you are calling what you have in the Ajax if you want a different elements from the Ajax you need to specify it.
Example:
Var infogen = $.ajax({'your query')};
$("#refresh").click(function(){
infogen;
console.log("to verify");
});
Hope helps
if not try:
$("#refresh").click(function(){
loca.tion.reload();
console.log("to verify");
});
You can't call _doPostBack()
because it forces submition of the form. Why don't you disable the PostBack
on the UpdatePanel
?
browsers are smart enough to detect the link and downloading it directly when clicking on an anchor tag without using the download attribute.
after getting your file link from the api, just use plain javascript by creating anchor tag and delete it after clicking on it dynamically immediately on the fly.
const link = document.createElement('a');
link.href = `your_link.pdf`;
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
There is a specification that a lot of drivers support that's called DBRef.
DBRef is a more formal specification for creating references between documents. DBRefs (generally) include a collection name as well as an object id. Most developers only use DBRefs if the collection can change from one document to the next. If your referenced collection will always be the same, the manual references outlined above are more efficient.
Taken from MongoDB Documentation: Data Models > Data Model Reference > Database References
Adding to @Armand answer:
Add the following environment variable:
NODE_TLS_REJECT_UNAUTHORIZED=0 e.g. with export:
export NODE_TLS_REJECT_UNAUTHORIZED=0 (with great thanks to Juanra)
If you on windows usage:
set NODE_TLS_REJECT_UNAUTHORIZED=0
For getting current user id in razor views, we can inject UserManager in the view like this:
@inject Microsoft.AspNetCore.Identity.UserManager<ApplicationUser> _userManager
@{ string userId = _userManager.GetUserId(User); }
I hope you find it useful.
Important to mention:
On the commandline you can't use
svn add *
This will also add the ignored files, because the command line expands *
and therefore svn add
believes that you want all files to be added. Therefore use this instead:
svn add --force .
.NET Standard: Think of it as a big standard library. When using this as a dependency you can only make libraries (.DLLs), not executables. A library made with .NET standard as a dependency can be added to a Xamarin.Android, a Xamarin.iOS, a .NET Core Windows/OS X/Linux project.
.NET Core: Think of it as the continuation of the old .NET framework, just it's opensource and some stuff is not yet implemented and others got deprecated. It extends the .NET standard with extra functions, but it only runs on desktops. When adding this as a dependency you can make runnable applications on Windows, Linux and OS X. (Although console only for now, no GUIs). So .NET Core = .NET Standard + desktop specific stuff.
Also UWP uses it and the new ASP.NET Core uses it as a dependency too.
Make that "three single comment-markers"
In C# it's ///
which as default spits out:
/// <summary>
///
/// </summary>
/// <returns></returns>
You can use popular external library xmltodict, with unparse
and pretty=True
you will get best result:
xmltodict.unparse(
xmltodict.parse(my_xml), full_document=False, pretty=True)
full_document=False
against <?xml version="1.0" encoding="UTF-8"?>
at the top.
If you are using Sql Server 2005 you can use table valued functions. You can call these directly and pass paramters, whilst treating them as if they were tables.
For more info check out Table-Valued User-Defined Functions
Depending if you only need a couple attributes to be styled inline you can do something like this solution (and saves you from having to install a special package or create an extra element):
https://stackoverflow.com/a/42000085
<span class="something" datacustomattribute="">
Hello
</span>
.something::before {
content: attr(datascustomattribute);
position: absolute;
}
Note that the datacustomattribute
must start with data
and be all lowercase to satisfy React.
Replace datatype without losing data
alter table tablename modify columnn newdatatype(size);
While many of the suggestions work when converting 2 -> 4 space. I ran into some issues when converting 4 -> 2.
Here's what I ended up using:
Sublime Text 3/Packages/User/to-2.sublime-macro
[
{ "args": null, "command": "select_all" },
{ "args": { "set_translate_tabs": true }, "command": "unexpand_tabs" },
{ "args": { "setting": "tab_size", "value": 1 }, "command": "set_setting" },
{ "args": { "set_translate_tabs": true }, "command": "expand_tabs" },
{ "args": { "setting": "tab_size", "value": 2 }, "command": "set_setting" }
]
The delete
operator removes a property from an object. It cannot remove a variable. So the answer to the question depends on how the global variable or property is defined.
(1) If it is created with var
, it cannot be deleted.
For example:
var g_a = 1; //create with var, g_a is a variable
delete g_a; //return false
console.log(g_a); //g_a is still 1
(2) If it is created without var
, it can be deleted.
g_b = 1; //create without var, g_b is a property
delete g_b; //return true
console.log(g_b); //error, g_b is not defined
var
In this case the reference g_a
is created in what the ECMAScript spec calls "VariableEnvironment" that is attached to the current scope - this may be the a function execution context in the case of using var
inside a function (though it may be get a little more complicated when you consider let
) or in the case of "global" code the VariableEnvironment is attached to the global object (often window
).
References in the VariableEnvironment are not normally deletable - the process detailed in ECMAScript 10.5 explains this in detail, but suffice it to say that unless your code is executed in an eval
context (which most browser-based development consoles use), then variables declared with var
cannot be deleted.
var
When trying to assign a value to a name without using the var
keyword, Javascript tries to locate the named reference in what the ECMAScript spec calls "LexicalEnvironment", and the main difference is that LexicalEnvironments are nested - that is a LexicalEnvironment has a parent (what the ECMAScript spec calls "outer environment reference") and when Javascript fails to locate the reference in a LexicalEnvironment, it looks in the parent LexicalEnvironment (as detailed in 10.3.1 and 10.2.2.1). The top level LexicalEnvironment is the "global environment", and that is bound to the global object in that its references are the global object's properties. So if you try to access a name that was not declared using a var
keyword in the current scope or any outer scopes, Javascript will eventually fetch a property of the window
object to serve as that reference. As we've learned before, properties on objects can be deleted.
It is important to remember that var
declarations are "hoisted" - i.e. they are always considered to have happened in the beginning of the scope that they are in - though not the value initialization that may be done in a var
statement - that is left where it is. So in the following code, a
is a reference from the VariableEnvironment and not the window
property and its value will be 10
at the end of the code:
function test() { a = 5; var a = 10; }
The above discussion is when "strict mode" is not enabled. Lookup rules are a bit different when using "strict mode" and lexical references that would have resolved to window properties without "strict mode" will raise "undeclared variable" errors under "strict mode". I didn't really understand where this is specified, but its how browsers behave.
Here is very good visual representation about continue and break statements
Add the jar files to your library(if using netbeans) and modify your manifest's file classpath
as follows:
Class-Path: lib/derby.jar lib/derbyclient.jar lib/derbynet.jar lib/derbytools.jar
a similar answer exists here
Use this to convert String to Blob. Where connection is the connection to db object.
String strContent = s;
byte[] byteConent = strContent.getBytes();
Blob blob = connection.createBlob();//Where connection is the connection to db object.
blob.setBytes(1, byteContent);
Try having this in your xml of Edit Text:
android:inputType="numberDecimal"
I have tried very hard on all the answers above. However, they did not actually help because I used a mac. The rio library has this import function which can basically import any type of data file into Rstudio, even those file using languages other than English!
Try codes below:
library(rio)
AB <- import("C:/AB_DNA_Tag_Numbers.xlsx")
AB <- AB[,1]
Hope this help. For more detailed reference: https://cran.r-project.org/web/packages/rio/vignettes/rio.html
That's right, but it doesn't change it permanently, but just for current command prompt, if you wanna to change it permanently you have to use for example this:
setx ENV_VAR_NAME "DESIRED_PATH" /m
This will change it permanently and yes you can overwrite it by another batch script.
Here is a useful mnemonic for remembering the difference between for...in
Loop and for...of
Loop.
"index in, object of"
for...in Loop
=> iterates over the index in the array.
for...of Loop
=> iterates over the object of objects.
If you have a remote tag v0.1.0
to delete, and your remote is origin
, then simply:
git push origin :refs/tags/v0.1.0
If you also need to delete the tag locally:
git tag -d v0.1.0
See Adam Franco's answer for an explanation of Git's unusual :
syntax for deletion.