AndroidManifest.xml
Include launchMode="singleTop"
<activity android:name=".MessagesDetailsActivity"
android:launchMode="singleTop"
android:excludeFromRecents="true"
/>
SMSReceiver.java
Set the flags for the Intent and PendingIntent
Intent intent = new Intent(context, MessagesDetailsActivity.class);
intent.putExtra("smsMsg", smsObject.getMsg());
intent.putExtra("smsAddress", smsObject.getAddress());
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent contentIntent = PendingIntent.getActivity(context, notification_id, intent, PendingIntent.FLAG_UPDATE_CURRENT);
MessageDetailsActivity.java
onResume() - gets called everytime, load the extras.
Intent intent = getIntent();
String extraAddress = intent.getStringExtra("smsAddress");
String extraBody = intent.getStringExtra("smsMsg");
Hope it helps, it was based on other answers here on stackoverflow, but this is the most updated that worked for me.
Just use crontab -e
and follow the tutorial here.
Look at point 3 for a guide on how to specify the frequency.
Based on your requirement, it should effectively be:
*/10 * * * * /usr/bin/python script.py
If you want to look for all commits by filename
and not by filepath
, use:
git log --all -- '*.wmv'
Convert the image to a byte[]
and store that in the database.
Add this column to your model:
public byte[] Content { get; set; }
Then convert your image to a byte array and store that like you would any other data:
public byte[] ImageToByteArray(System.Drawing.Image imageIn)
{
using(var ms = new MemoryStream())
{
imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
return ms.ToArray();
}
}
public Image ByteArrayToImage(byte[] byteArrayIn)
{
using(var ms = new MemoryStream(byteArrayIn))
{
var returnImage = Image.FromStream(ms);
return returnImage;
}
}
Source: Fastest way to convert Image to Byte array
var image = new ImageEntity()
{
Content = ImageToByteArray(image)
};
_context.Images.Add(image);
_context.SaveChanges();
When you want to get the image back, get the byte array from the database and use the ByteArrayToImage
and do what you wish with the Image
This stops working when the byte[]
gets to big. It will work for files under 100Mb
If you wanna read as a file, I believe there still is a similar solution:
ClassLoader classLoader = getClass().getClassLoader();
File file = new File(classLoader.getResource("file/test.xml").getFile());
Based on @Vlad Bezden answer I use this slightly modified code because I prefer named placeholders:
String.prototype.format = function(placeholders) {
var s = this;
for(var propertyName in placeholders) {
var re = new RegExp('{' + propertyName + '}', 'gm');
s = s.replace(re, placeholders[propertyName]);
}
return s;
};
usage:
"{greeting} {who}!".format({greeting: "Hello", who: "world"})
String.prototype.format = function(placeholders) {_x000D_
var s = this;_x000D_
for(var propertyName in placeholders) {_x000D_
var re = new RegExp('{' + propertyName + '}', 'gm');_x000D_
s = s.replace(re, placeholders[propertyName]);_x000D_
} _x000D_
return s;_x000D_
};_x000D_
_x000D_
$("#result").text("{greeting} {who}!".format({greeting: "Hello", who: "world"}));
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div id="result"></div>
_x000D_
You can use TreeSet as mentioned in other answers.
Here's a little more elaboration on how to use it:
TreeSet<String> ts = new TreeSet<String>();
ts.add("b1");
ts.add("b3");
ts.add("b2");
ts.add("a1");
ts.add("a2");
System.out.println(ts);
for (String s: ts)
System.out.println(s);
Output:
[a1, a2, a3, a4, a5]
a1
a2
b1
b2
b3
Here is a working code which I wrote some time ago
// Return all subsets of a given set
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<vector>
#include<string>
#include<sstream>
#include<cstring>
#include<climits>
#include<cmath>
#include<iterator>
#include<set>
#include<map>
#include<stack>
#include<queue>
using namespace std;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector< vector<int> > vvi;
typedef vector<string> vs;
vvi get_subsets(vi v, int size)
{
if(size==0) return vvi(1);
vvi subsets = get_subsets(v,size-1);
vvi more_subsets(subsets);
for(typeof(more_subsets.begin()) it = more_subsets.begin(); it !=more_subsets.end(); it++)
{
(*it).push_back(v[size-1]);
}
subsets.insert(subsets.end(), (more_subsets).begin(), (more_subsets).end());
return subsets;
}
int main()
{
int ar[] = {1,2,3};
vi v(ar , ar+int(sizeof(ar)/sizeof(ar[0])));
vvi subsets = get_subsets(v,int((v).size()));
for(typeof(subsets.begin()) it = subsets.begin(); it !=subsets.end(); it++)
{
printf("{ ");
for(typeof((*it).begin()) it2 = (*it).begin(); it2 !=(*it).end(); it2++)
{
printf("%d,",*it2 );
}
printf(" }\n");
}
printf("Total subsets = %d\n",int((subsets).size()) );
}
You could just use a margin-left with a percentage.
HTML
<div class="goleft">Left Div</div>
<div class="goright">Right Div</div>
CSS
.goright{
margin-left:20%;
}
.goleft{
margin-right:20%;
}
(goleft would be the same as default, but can reverse if needed)
text-align doesn't always work as intended for layout options, it's mainly just for text. (But is often used for form elements too).
The end result of doing this will have a similar effect to a div with float:right; and width:80% set. Except, it won't clump together like a float will. (Saving the default display properties for the elements that come after).
fwiw, this didn't work for me until I had this in the ajax call:
contentType: "application/json; charset=utf-8",
using Asp.Net MVC 4.
In my opinion cherry-picking should be reserved for rare situations where it is required, for example if you did some fix on directly on 'master' branch (trunk, main development branch) and then realized that it should be applied also to 'maint'. You should base workflow either on merge, or on rebase (or "git pull --rebase").
Please remember that cherry-picked or rebased commit is different from the point of view of Git (has different SHA-1 identifier) than the original, so it is different than the commit in remote repository. (Rebase can usually deal with this, as it checks patch id i.e. the changes, not a commit id).
Also in git you can merge many branches at once: so called octopus merge. Note that octopus merge has to succeed without conflicts. Nevertheless it might be useful.
HTH.
To make the text portion of a ComboBox non-editable, set the DropDownStyle property to "DropDownList". The ComboBox is now essentially select-only for the user. You can do this in the Visual Studio designer, or in C# like this:
stateComboBox.DropDownStyle = ComboBoxStyle.DropDownList;
Link to the documentation for the ComboBox DropDownStyle property on MSDN.
Based on @caf's answer, this working nicely for me.
Calculate average for given PID:
measure.sh
times=100
total=0
for i in $(seq 1 $times)
do
OUTPUT=$(top -b -n 1 -d 0.1 -p $1 | tail -1 | awk '{print $9}')
echo -n "$i time: ${OUTPUT}"\\r
total=`echo "$total + $OUTPUT" | bc -l`
done
#echo "Average: $total / $times" | bc
average=`echo "scale=2; $total / $times" | bc`
echo "Average: $average"
Usage:
# send PID as argument
sh measure.sh 3282
For me the main trick is
app.use(bodyParser.json({
limit: '20mb'
}));
app.use(bodyParser.urlencoded({
limit: '20mb',
parameterLimit: 100000,
extended: true
}));
bodyParse.json first bodyParse.urlencoded second
My guess is you are using a Set<Role>
in the User
class annotated with @OneToMany
. Which means one User
has many Role
s. But on the same field you use the @Column
annotation which makes no sense. One-to-many relationships are managed using a separate join table or a join column on the many side, which in this case would be the Role class. Using @JoinColumn
instead of @Column
would probably fix the issue, but it seems semantically wrong. I guess the relationship between role and user should be many-to-many.
"True" and "False" do not work, to disable, set to value disabled.
$('.someElement').attr('disabled', 'disabled');
To enable, remove.
$('.someElement').removeAttr('disabled');
Also, don't worry about multiple items being selected, jQuery will operate on all of them that match. If you need just one you can use many things :first, :last, nth, etc.
You are using name and not id as other mention -- remember, if you use id valid xhtml requires the ids be unique.
An alternative is to use the maven shade plugin to build an uber-jar
.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version> Your Version Here </version>
<configuration>
<!-- put your configurations here -->
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
The commands are adduser
and addgroup
.
Here's a template for Docker you can use in busybox environments (alpine) as well as Debian-based environments (Ubuntu, etc.):
ENV USER=docker
ENV UID=12345
ENV GID=23456
RUN adduser \
--disabled-password \
--gecos "" \
--home "$(pwd)" \
--ingroup "$USER" \
--no-create-home \
--uid "$UID" \
"$USER"
Note the following:
--disabled-password
prevents prompt for a password--gecos ""
circumvents the prompt for "Full Name" etc. on Debian-based systems--home "$(pwd)"
sets the user's home to the WORKDIR. You may not want this.--no-create-home
prevents cruft getting copied into the directory from /etc/skel
The usage description for these applications is missing the long flags present in the code for adduser and addgroup.
The following long-form flags should work both in alpine as well as debian-derivatives:
BusyBox v1.28.4 (2018-05-30 10:45:57 UTC) multi-call binary.
Usage: adduser [OPTIONS] USER [GROUP]
Create new user, or add USER to GROUP
--home DIR Home directory
--gecos GECOS GECOS field
--shell SHELL Login shell
--ingroup GRP Group (by name)
--system Create a system user
--disabled-password Don't assign a password
--no-create-home Don't create home directory
--uid UID User id
One thing to note is that if --ingroup
isn't set then the GID is assigned to match the UID. If the GID corresponding to the provided UID already exists adduser will fail.
BusyBox v1.28.4 (2018-05-30 10:45:57 UTC) multi-call binary.
Usage: addgroup [-g GID] [-S] [USER] GROUP
Add a group or add a user to a group
--gid GID Group id
--system Create a system group
I discovered all of this while trying to write my own alternative to the fixuid project for running containers as the hosts UID/GID.
My entrypoint helper script can be found on GitHub.
The intent is to prepend that script as the first argument to ENTRYPOINT
which should cause Docker to infer UID and GID from a relevant bind mount.
An environment variable "TEMPLATE" may be required to determine where the permissions should be inferred from.
(At the time of writing I don't have documentation for my script. It's still on the todo list!!)
The better way is using 'background-size'.
.pnx-msg-icon .pnx-icon-msg-warning{
background-image: url("../pics/edit.png");
background-repeat: no-repeat;
background-size: 10px;
width: 10px;
height: 10px;
cursor: pointer;
}
even if your icon dimensions is bigger than 10px it will be 10px.
In my case, brew update icu4c to version 67.1 so my php7.1 doesn't work. Just reinstall icu4c, then it fine.
You can use PHPunit default way of showing messages to debug your variables inside your test like this:
$this->assertTrue(false,$your_variable);
If you don't have access to java 8 and the API java.time, here is my simple function to copy the time of one date to another date using the old java.util.Calendar (inspire by Jigar Joshi) :
/**
* Copy only the time of one date to the date of another date.
*/
public static Date copyTimeToDate(Date date, Date time) {
Calendar t = Calendar.getInstance();
t.setTime(time);
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, t.get(Calendar.HOUR_OF_DAY));
c.set(Calendar.MINUTE, t.get(Calendar.MINUTE));
c.set(Calendar.SECOND, t.get(Calendar.SECOND));
c.set(Calendar.MILLISECOND, t.get(Calendar.MILLISECOND));
return c.getTime();
}
As an appendix to Clint's answer, you can simplify PackageResource
using contextlib.contextmanager
:
@contextlib.contextmanager
def packageResource():
class Package:
...
package = Package()
yield package
package.cleanup()
Alternatively, though probably not as Pythonic, you can override Package.__new__
:
class Package(object):
def __new__(cls, *args, **kwargs):
@contextlib.contextmanager
def packageResource():
# adapt arguments if superclass takes some!
package = super(Package, cls).__new__(cls)
package.__init__(*args, **kwargs)
yield package
package.cleanup()
def __init__(self, *args, **kwargs):
...
and simply use with Package(...) as package
.
To get things shorter, name your cleanup function close
and use contextlib.closing
, in which case you can either use the unmodified Package
class via with contextlib.closing(Package(...))
or override its __new__
to the simpler
class Package(object):
def __new__(cls, *args, **kwargs):
package = super(Package, cls).__new__(cls)
package.__init__(*args, **kwargs)
return contextlib.closing(package)
And this constructor is inherited, so you can simply inherit, e.g.
class SubPackage(Package):
def close(self):
pass
You should be able to force your local revision to the remote repo by using
git push -f <remote> <branch>
(e.g. git push -f origin master
). Leaving off <remote>
and <branch>
will force push all local branches that have set --set-upstream
.
Just be warned, if other people are sharing this repository their revision history will conflict with the new one. And if they have any local commits after the point of change they will become invalid.
Update: Thought I would add a side-note. If you are creating changes that others will review, then it's not uncommon to create a branch with those changes and rebase periodically to keep them up-to-date with the main development branch. Just let other developers know this will happen periodically so they'll know what to expect.
Update 2: Because of the increasing number of viewers I'd like to add some additional information on what to do when your upstream
does experience a force push.
Say I've cloned your repo and have added a few commits like so:
D----E topic / A----B----C development
But later the development
branch is hit with a rebase
, which will cause me to receive an error like so when I run git pull
:
Unpacking objects: 100% (3/3), done. From <repo-location> * branch development -> FETCH_HEAD Auto-merging <files> CONFLICT (content): Merge conflict in <locations> Automatic merge failed; fix conflicts and then commit the result.
Here I could fix the conflicts and commit
, but that would leave me with a really ugly commit history:
C----D----E----F topic / / A----B--------------C' development
It might look enticing to use git pull --force
but be careful because that'll leave you with stranded commits:
D----E topic A----B----C' development
So probably the best option is to do a git pull --rebase
. This will require me to resolve any conflicts like before, but for each step instead of committing I'll use git rebase --continue
. In the end the commit history will look much better:
D'---E' topic / A----B----C' development
Update 3: You can also use the --force-with-lease
option as a "safer" force
push, as mentioned by Cupcake in his
answer:
Force pushing with a "lease" allows the force push to fail if there are new commits on the remote that you didn't expect (technically, if you haven't fetched them into your remote-tracking branch yet), which is useful if you don't want to accidentally overwrite someone else's commits that you didn't even know about yet, and you just want to overwrite your own:
git push <remote> <branch> --force-with-lease
You can learn more details about how to use
--force-with-lease
by reading any of the following:
Procedure never returns a value.You have to use a output parameter in store procedure.
ALTER PROC TESTLOGIN
@UserName varchar(50),
@password varchar(50)
@retvalue int output
as
Begin
declare @return int
set @return = (Select COUNT(*)
FROM CPUser
WHERE UserName = @UserName AND Password = @password)
set @retvalue=@return
End
Then you have to add a sqlparameter from c# whose parameter direction is out. Hope this make sense.
In XP, the .mru.dat file is in C:\Documents and Settings\Name\Application Data\Microsoft\Microsoft SQL Server\90\Tools\ShellSEM
However, removing it won't do anything.
To remove the list in XP, cut the sqlstudio bin file from C:\Documents and Settings\Name\Application Data\Microsoft\Microsoft SQL Server\100\Tools\Shell and paste it on your desktop.
Try SQL
If it has worked, then delete the sqlstudio bin file from desktop.
Easy :)
If you still can not unmount or remount your device after stopping all services and processes with open files, then there may be a swap file or swap partition keeping your device busy. This will not show up with fuser
or lsof
. Turn off swapping with:
sudo swapoff -a
You could check beforehand and show a summary of any swap partitions or swap files with:
swapon -s
or:
cat /proc/swaps
As an alternative to using the command sudo swapoff -a
, you might also be able to disable the swap by stopping a service or systemd unit. For example:
sudo systemctl stop dphys-swapfile
or:
sudo systemctl stop var-swap.swap
In my case, turning off swap was necessary, in addition to stopping any services and processes with files open for writing, so that I could remount my root partition as read only in order to run fsck
on my root partition without rebooting. This was necessary on a Raspberry Pi running Raspbian Jessie.
The string literal is pased according to the current dateformat setting, see SET DATEFORMAT
. One format which will always work is the '20090525' one.
Now, of course, you need to define 'does not work'. No records gets updated? Perhaps the Id=1
doesn't match any record...
If it says 'One record changed' then perhaps you need to show us how you verify...
You could also check out the PLINQO set of code generation templates, based on CodeSmith, which allow you to do a lot of neat things for and with Linq-to-SQL:
Check out the PLINQO site at http://www.plinqo.com and have a look at the intro videos.
The second tool I know of are the Huagati DBML/EDMX tools, which allow update of DBML (Linq-to-SQL) and EDMX (Entity Framework) mapping files, and more (like naming conventions etc.).
Marc
Here's how you do it:
Using AddDays(-1)
worked for me until I tried to cross months. When I tried to subtract 2 days from 2017-01-01 the result was 2016-00-30. It could not handle the month change correctly (though the year seemed to be fine).
I used date = Convert.ToDateTime(date).Subtract(TimeSpan.FromDays(2)).ToString("yyyy-mm-dd");
and have no issues.
Which whitespace character? The empty string is pretty unambiguous - it's a sequence of 0 characters. However, " "
, "\t"
and "\n"
are all strings containing a single character which is characterized as whitespace.
If you just mean a space, use a space. If you mean some other whitespace character, there may well be a custom escape sequence for it (e.g. "\t"
for tab) or you can use a Unicode escape sequence ("\uxxxx"
). I would discourage you from including non-ASCII characters in your source code, particularly whitespace ones.
EDIT: Now that you've explained what you want to do (which should have been in your question to start with) you'd be better off using Regex.Split
with a regular expression of \s
which represents whitespace:
Regex regex = new Regex(@"\s");
string[] bits = regex.Split(text.ToLower());
See the Regex Character Classes documentation for more information on other character classes.
Not Bootstrap specific really... You can use inline styles or define a custom class to specify the desired "background-color".
On the other hand, Bootstrap does have a few built in background colors that have semantic meaning like "bg-success" (green) and "bg-danger" (red).
It's pretty pointless to return a const
value from a function.
It's difficult to get it to have any effect on your code:
const int foo() {
return 3;
}
int main() {
int x = foo(); // copies happily
x = 4;
}
and:
const int foo() {
return 3;
}
int main() {
foo() = 4; // not valid anyway for built-in types
}
// error: lvalue required as left operand of assignment
Though you can notice if the return type is a user-defined type:
struct T {};
const T foo() {
return T();
}
int main() {
foo() = T();
}
// error: passing ‘const T’ as ‘this’ argument of ‘T& T::operator=(const T&)’ discards qualifiers
it's questionable whether this is of any benefit to anyone.
Returning a reference is different, but unless Object
is some template parameter, you're not doing that.
For regular Windows users who are not skilled with computers, it is practically not possible to install and use extensions from outside the Chrome Web Store.
Users of other operating systems (Linux, Mac, Chrome OS) can easily install unpacked extensions (in developer mode).
Windows users can also load an unpacked extension, but they will always see an information bubble with "Disable developer mode extensions" when they start Chrome or open a new incognito window, which is really annoying. The only way for Windows users to use unpacked extensions without such dialogs is to switch to Chrome on the developer channel, by installing https://www.google.com/chrome/browser/index.html?extra=devchannel#eula.
Extensions can be loaded in unpacked mode by following the following steps:
chrome://extensions
(via omnibox or menu -> Tools -> Extensions).If you have a crx
file, then it needs to be extracted first. CRX files are zip files with a different header. Any capable zip program should be able to open it. If you don't have such a program, I recommend 7-zip.
These steps will work for almost every extension, except extensions that rely on their extension ID. If you use the previous method, you will get an extension with a random extension ID. If it is important to preserve the extension ID, then you need to know the public key of your CRX file and insert this in your manifest.json. I have previously given a detailed explanation on how to get and use this key at https://stackoverflow.com/a/21500707.
I have the same problem. I avoid it with remove.packages("Package making this confusion")
and it works. In my case, I don't need the second package, so that is not a very good idea.
Comparison of three ONELINERS which handle minus numbers case (input in a
array):
var maxA = a.reduce((a,b)=>a.y>b.y?a:b).y; // 30 chars time complexity: O(n)
var maxB = a.sort((a,b)=>b.y-a.y)[0].y; // 27 chars time complexity: O(nlogn)
var maxC = Math.max(...a.map(o=>o.y)); // 26 chars time complexity: >O(2n)
editable example here. Ideas from: maxA, maxB and maxC (side effect of maxB is that array a
is changed because sort
is in-place).
var a = [
{"x":"8/11/2009","y":0.026572007},{"x":"8/12/2009","y":0.025057454},
{"x":"8/14/2009","y":0.031004457},{"x":"8/13/2009","y":0.024530916}
]
var maxA = a.reduce((a,b)=>a.y>b.y?a:b).y;
var maxC = Math.max(...a.map(o=>o.y));
var maxB = a.sort((a,b)=>b.y-a.y)[0].y;
document.body.innerHTML=`<pre>maxA: ${maxA}\nmaxB: ${maxB}\nmaxC: ${maxC}</pre>`;
_x000D_
For bigger arrays the Math.max...
will throw exception: Maximum call stack size exceeded (Chrome 76.0.3809, Safari 12.1.2, date 2019-09-13)
let a = Array(400*400).fill({"x": "8/11/2009", "y": 0.026572007 });
// Exception: Maximum call stack size exceeded
try {
let max1= Math.max.apply(Math, a.map(o => o.y));
} catch(e) { console.error('Math.max.apply:', e.message) }
try {
let max2= Math.max(...a.map(o=>o.y));
} catch(e) { console.error('Math.max-map:', e.message) }
_x000D_
I know this is kind of old, but I just got something along the same lines to work. Couldn't you do this?
tr.highlight {
border-top: 10px solid;
border-bottom: 10px solid;
border-color: transparent;
}
Hope this helps.
Uncaught InvalidValueError: setPosition: not a LatLng or LatLngLiteral: in property lat: not a number
Means you are not passing numbers into the google.maps.LatLng constructor. Per your comment:
/*Information from chromium debugger
trader: Object
geo: Object
lat: "49.014821"
lon: "10.985072"
*/
trader.geo.lat and trader.geo.lon are strings, not numbers. Use parseFloat to convert them to numbers:
var myLatlng = new google.maps.LatLng(parseFloat(trader.geo.lat),parseFloat(trader.geo.lon));
You can use upstream headers (named starting with $http_) and additional custom headers. For example:
add_header X-Upstream-01 $http_x_upstream_01;
add_header X-Hdr-01 txt01;
next, go to console and make request with user's header:
curl -H "X-Upstream-01: HEADER1" -I http://localhost:11443/
the response contains X-Hdr-01, seted by server and X-Upstream-01, seted by client:
HTTP/1.1 200 OK
Server: nginx/1.8.0
Date: Mon, 30 Nov 2015 23:54:30 GMT
Content-Type: text/html;charset=UTF-8
Connection: keep-alive
X-Hdr-01: txt01
X-Upstream-01: HEADER1
with 'exists?':
Business.exists? user_id: current_user.id #=> 1 or nil
with 'any?':
Business.where(:user_id => current_user.id).any? #=> true or false
If you use something with .where, be sure to avoid trouble with scopes and better use .unscoped
Business.unscoped.where(:user_id => current_user.id).any?
This is what the Python documentation has got to say about None
:
The sole value of types.NoneType. None is frequently used to represent the absence of a value, as when default arguments are not passed to a function.
Changed in version 2.4: Assignments to None are illegal and raise a SyntaxError.
Note The names None and debug cannot be reassigned (assignments to them, even as an attribute name, raise SyntaxError), so they can be considered “true” constants.
Let's confirm the type of None
first
print type(None)
print None.__class__
Output
<type 'NoneType'>
<type 'NoneType'>
Basically, NoneType
is a data type just like int
, float
, etc. You can check out the list of default types available in Python in 8.15. types — Names for built-in types.
And, None
is an instance of NoneType
class. So we might want to create instances of None
ourselves. Let's try that
print types.IntType()
print types.NoneType()
Output
0
TypeError: cannot create 'NoneType' instances
So clearly, cannot create NoneType
instances. We don't have to worry about the uniqueness of the value None
.
Let's check how we have implemented None
internally.
print dir(None)
Output
['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__',
'__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__',
'__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
Except __setattr__
, all others are read-only attributes. So, there is no way we can alter the attributes of None
.
Let's try and add new attributes to None
setattr(types.NoneType, 'somefield', 'somevalue')
setattr(None, 'somefield', 'somevalue')
None.somefield = 'somevalue'
Output
TypeError: can't set attributes of built-in/extension type 'NoneType'
AttributeError: 'NoneType' object has no attribute 'somefield'
AttributeError: 'NoneType' object has no attribute 'somefield'
The above seen statements produce these error messages, respectively. It means that, we cannot create attributes dynamically on a None
instance.
Let us check what happens when we assign something None
. As per the documentation, it should throw a SyntaxError
. It means, if we assign something to None
, the program will not be executed at all.
None = 1
Output
SyntaxError: cannot assign to None
We have established that
None
is an instance of NoneType
None
cannot have new attributesNone
cannot be changed.NoneType
None
by assigning values to it.So, as mentioned in the documentation, None
can really be considered as a true constant
.
Happy knowing None
:)
Had made just a small change to @anthony code so we can get nicely formatted output with argument numbers and values. Somehow easier to read on output when you have multiple arguments:
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("The following arguments were passed to main():\n");
printf("argnum \t value \n");
for (int i = 0; i<argc; i++) printf("%d \t %s \n", i, argv[i]);
printf("\n");
return 0;
}
And output is similar to:
The following arguments were passed to main():
0 D:\Projects\test\vcpp\bcppcomp1\Debug\bcppcomp.exe
1 -P
2 TestHostAttoshiba
3 _http._tcp
4 local
5 80
6 MyNewArgument
7 200.124.211.235
8 type=NewHost
9 test=yes
10 result=output
The using statement obtains one or more resources, executes a statement, and then disposes of the resource.
Try command + t
.
It works for me.
Here are a few one-liners which combine Peter Lewis' answer above (Check that a input to UITextField is numeric only) with NSPredicates
#define REGEX_FOR_NUMBERS @"^([+-]?)(?:|0|[1-9]\\d*)(?:\\.\\d*)?$"
#define REGEX_FOR_INTEGERS @"^([+-]?)(?:|0|[1-9]\\d*)?$"
#define IS_A_NUMBER(string) [[NSPredicate predicateWithFormat:@"SELF MATCHES %@", REGEX_FOR_NUMBERS] evaluateWithObject:string]
#define IS_AN_INTEGER(string) [[NSPredicate predicateWithFormat:@"SELF MATCHES %@", REGEX_FOR_INTEGERS] evaluateWithObject:string]
The object for the list:
public class InstalledProgram
{
public string DisplayName { get; set; }
public string Version { get; set; }
public string InstalledDate { get; set; }
public string Publisher { get; set; }
public string UnninstallCommand { get; set; }
public string ModifyPath { get; set; }
}
The call for creating the list:
List<InstalledProgram> installedprograms = new List<InstalledProgram>();
string registry_key = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
using (RegistryKey key = Registry.LocalMachine.OpenSubKey(registry_key))
{
foreach (string subkey_name in key.GetSubKeyNames())
{
using (RegistryKey subkey = key.OpenSubKey(subkey_name))
{
if (subkey.GetValue("DisplayName") != null)
{
installedprograms.Add(new InstalledProgram
{
DisplayName = (string)subkey.GetValue("DisplayName"),
Version = (string)subkey.GetValue("DisplayVersion"),
InstalledDate = (string)subkey.GetValue("InstallDate"),
Publisher = (string)subkey.GetValue("Publisher"),
UnninstallCommand = (string)subkey.GetValue("UninstallString"),
ModifyPath = (string)subkey.GetValue("ModifyPath")
});
}
}
}
}
Use
mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaplayer.prepareAsync();
mediaplayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaplayer.start();
}
});
You need a semicolon after font-family: Arial, Helvetica, sans-serif
. This will make your updated code the following:
<!DOCTYPE>
<html>
<head>
<title>DIV Font</title>
<style>
.my_text
{
font-family: Arial, Helvetica, sans-serif;
font-size: 40px;
font-weight: bold;
}
</style>
</head>
<body>
<div class="my_text">some text</div>
</body>
</html>
Mongoose now supports the timestamps in schema.
const item = new Schema(
{
id: {
type: String,
required: true,
},
{ timestamps: true },
);
This will add the createdAt
and updatedAt
fields on each record create.
Timestamp interface has fields
interface SchemaTimestampsConfig {
createdAt?: boolean | string;
updatedAt?: boolean | string;
currentTime?: () => (Date | number);
}
This would help us to choose which fields we want and overwrite the date format.
I use Anypoint Studio (an Eclipse based IDE). In my case everything worked well, until I found out that while running the java code, something totally different is executed. Then I have deleted the .class files. After this point I got the error message from this question's title. Cleaning the project didn't solve the problem.
After restarting the IDE everything worked well again.
Have you tried binding the list to the datagridview directly? If not, try that first because it will save you lots of pain. If you have tried it already, please tell us what went wrong so we can better advise you. Data binding gives you different behaviour depending on what interfaces your data object implements. For example, if your data object only implements IEnumerable
(e.g. List
), you will get very basic one-way binding, but if it implements IBindingList
as well (e.g. BindingList
, DataView
), then you get two-way binding.
Date.valid = function(str){
var d = new Date(str);
return (Object.prototype.toString.call(d) === "[object Date]" && !isNaN(d.getTime()));
}
https://gist.github.com/dustinpoissant/b83750d8671f10c414b346b16e290ecf
i used replace feature in Notepad++ and replaced "
(without quotes) with "
and result was valid json
Unless you're looking for something specific, you can already do Regular Expression matching using regular Javascript with strings.
For example, you can do matching using a string by something like this...
var phrase = "This is a phrase";
phrase = phrase.replace(/is/i, "is not");
alert(phrase);
Is there something you're looking for other than just Regular Expression matching in general?
use labelpad parameter:
pl.xlabel("...", labelpad=20)
or set it after:
ax.xaxis.labelpad = 20
Escaping works.
#!/bin/bash
FILES=(2011-09-04\ 21.43.02.jpg
2011-09-05\ 10.23.14.jpg
2011-09-09\ 12.31.16.jpg
2011-09-11\ 08.43.12.jpg)
echo ${FILES[0]}
echo ${FILES[1]}
echo ${FILES[2]}
echo ${FILES[3]}
Output:
$ ./test.sh
2011-09-04 21.43.02.jpg
2011-09-05 10.23.14.jpg
2011-09-09 12.31.16.jpg
2011-09-11 08.43.12.jpg
Quoting the strings also produces the same output.
Well one major thing is anything you submit over GET
is going to be exposed via the URL. Secondly as Ceejayoz says, there is a limit on characters for a URL.
This is only possible with setting a http response header by the server side code. Namely;
Content-Disposition: attachment; filename=fname.ext
$query = "ALTER TABLE `" . $table_prefix . "posts_to_bookmark`
ADD COLUMN `ping_status` INT(1) NOT NULL
AFTER `<TABLE COLUMN BEFORE THIS COLUMN>`";
I believe you need to have ADD COLUMN
and use AFTER
, not BEFORE
.
In case you want to place column at the beginning of a table, use the FIRST
statement:
$query = "ALTER TABLE `" . $table_prefix . "posts_to_bookmark`
ADD COLUMN `ping_status` INT(1) NOT NULL
FIRST";
@noskio is correct... it just means that simplejson
isn't found on your system and you need to install it for Python older than 2.6. one way is to use the setuptools easy_install
tool. with it, you can install it as easily as: easy_install simplejson
UPDATE (Feb 2014): this is probably old news to many of you, but pip is a more modern tool that works in a similar way (i.e., pip install simplejson
), only it can also uninstall apps.
Step 1
Go to S:\MAMP
enter code here
\bin\apache\conf\
open httpd.conf
file and change
#Include conf/extra/httpd-vhosts.conf
to
Include conf/extra/httpd-vhosts.conf
i.e. uncomment the line so that it can includes the virtual hosts file.
Step 2
Go to S:\MAMP\bin\apache\conf\extra
and open httpd-vhosts.conf
file and add the following code
<VirtualHost myWebsite.local>
DocumentRoot "S:\MAMP\htdocs/myWebsite/"
ServerName myWebsite.local
ServerAlias myWebsite.local
<Directory "S:\MAMP\htdocsmyWebsite/">
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
change myWebsite.local
and S:\MAMP\htdocs/myWebsite/
as per your requirements.
Step 3
Open hosts
file in C:/Windows/System32/drivers/etc/
and add the following line ( Don't delete anything )
127.0.0.1 myWebsite.local
change myWebsite.local
as per your name requirements
Step 4
restart your server. That's it
I updated to Yosemite and Android Studio wouldn't clean my projects or Run them on virtual or real device because of the following error:
Failed to complete Gradle execution.Cause:Supplied javaHome is not a valid folder. You supplied: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
After some research and trouble shooting, I found that the JDK file that was being pointed to at "/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home" wasn't there; all of "JavaVirtualMachines/1.6.0.jdk/Contents/Home" was missing from "/System/Library/Java". So, I copied "JavaVirtualMachines/1.6.0.jdk/Contents/Home" over from "/Library/Java/" to "/System/Library/Java/" and cha ching! I was back in business.
In case you want to count the references from your model( ie: Client has Address as reference so you wanna count how many address would exists for a client) in a foreach loop at your view such as:
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.DtCadastro)
</td>
<td style="width:50%">
@Html.DisplayFor(modelItem => item.DsLembrete)
</td>
<td>
@Html.DisplayFor(modelItem => item.DtLembrete)
</td>
<td>
@{
var contador = item.LembreteEnvolvido.Where(w => w.IdLembrete == item.IdLembrete).Count();
}
<button class="btn-link associado" data-id="@item.IdLembrete" data-path="/LembreteEnvolvido/Index/@item.IdLembrete"><i class="fas fa-search"></i> @contador</button>
<button class="btn-link associar" data-id="@item.IdLembrete" data-path="/LembreteEnvolvido/Create/@item.IdLembrete"><i class="fas fa-plus"></i></button>
</td>
<td class="text-right">
<button class="btn-link delete" data-id="@item.IdLembrete" data-path="/Lembretes/Delete/@item.IdLembrete">Excluir</button>
</td>
</tr>
}
do as coded:
@{ var contador = item.LembreteEnvolvido.Where(w => w.IdLembrete == item.IdLembrete).Count();}
and use it like this:
<button class="btn-link associado" data-id="@item.IdLembrete" data-path="/LembreteEnvolvido/Index/@item.IdLembrete"><i class="fas fa-search"></i> @contador</button>
ps: don't forget to add INCLUDE to that reference at you DbContext inside, for example, your Index action controller, in case this is an IEnumerable model.
I like the "querystring" syntax for argument passing, especially when there are a lot of arguments to be passed.
Example:
rake "mytask[width=10&height=20]"
The "querystring" being:
width=10&height=20
Warning: note that the syntax is rake "mytask[foo=bar]"
and NOT rake mytask["foo=bar"]
When parsed inside the rake task using Rack::Utils.parse_nested_query
, we get a Hash
:
=> {"width"=>"10", "height"=>"20"}
(The cool thing is that you can pass hashes and arrays, more below)
This is how to achieve this:
require 'rack/utils'
task :mytask, :args_expr do |t,args|
args.with_defaults(:args_expr => "width=10&height=10")
options = Rack::Utils.parse_nested_query(args[:args_expr])
end
Here's a more extended example that I'm using with Rails in my delayed_job_active_record_threaded gem:
bundle exec rake "dj:start[ebooks[workers_number]=16&ebooks[worker_timeout]=60&albums[workers_number]=32&albums[worker_timeout]=120]"
Parsed the same way as above, with an environment dependency (in order load the Rails environment)
namespace :dj do
task :start, [ :args_expr ] => :environment do |t, args|
# defaults here...
options = Rack::Utils.parse_nested_query(args[:args_expr])
end
end
Gives the following in options
=> {"ebooks"=>{"workers_number"=>"16", "worker_timeout"=>"60"}, "albums"=>{"workers_number"=>"32", "worker_timeout"=>"120"}}
Another common use-case is manipulating/testing file permissions. See the Python stat module: http://docs.python.org/library/stat.html.
For example, to compare a file's permissions to a desired permission set, you could do something like:
import os
import stat
#Get the actual mode of a file
mode = os.stat('file.txt').st_mode
#File should be a regular file, readable and writable by its owner
#Each permission value has a single 'on' bit. Use bitwise or to combine
#them.
desired_mode = stat.S_IFREG|stat.S_IRUSR|stat.S_IWUSR
#check for exact match:
mode == desired_mode
#check for at least one bit matching:
bool(mode & desired_mode)
#check for at least one bit 'on' in one, and not in the other:
bool(mode ^ desired_mode)
#check that all bits from desired_mode are set in mode, but I don't care about
# other bits.
not bool((mode^desired_mode)&desired_mode)
I cast the results as booleans, because I only care about the truth or falsehood, but it would be a worthwhile exercise to print out the bin() values for each one.
There is no "one-to-one" mapping between XML and JSON, so converting one to the other necessarily requires some understanding of what you want to do with the results.
That being said, Python's standard library has several modules for parsing XML (including DOM, SAX, and ElementTree). As of Python 2.6, support for converting Python data structures to and from JSON is included in the json
module.
So the infrastructure is there.
You can flip it horizontally with CSS...
a:visited {
-moz-transform: scaleX(-1);
-o-transform: scaleX(-1);
-webkit-transform: scaleX(-1);
transform: scaleX(-1);
filter: FlipH;
-ms-filter: "FlipH";
}
If you want to flip vertically instead...
a:visited {
-moz-transform: scaleY(-1);
-o-transform: scaleY(-1);
-webkit-transform: scaleY(-1);
transform: scaleY(-1);
filter: FlipV;
-ms-filter: "FlipV";
}
Making @sulai suggestion more generic :
@TargetApi(Build.VERSION_CODES.HONEYCOMB) // API 11
public static <T> void executeAsyncTask(AsyncTask<T, ?, ?> asyncTask, T... params) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
asyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, params);
else
asyncTask.execute(params);
}
If you only want to know if any item of d
is contained in paid[j]
, as you literally say:
if any(x in paid[j] for x in d): ...
If you also want to know which items of d
are contained in paid[j]
:
contained = [x for x in d if x in paid[j]]
contained
will be an empty list if no items of d
are contained in paid[j]
.
There are other solutions yet if what you want is yet another alternative, e.g., get the first item of d
contained in paid[j]
(and None
if no item is so contained):
firstone = next((x for x in d if x in paid[j]), None)
BTW, since in a comment you mention sentences and words, maybe you don't necessarily want a string check (which is what all of my examples are doing), because they can't consider word boundaries -- e.g., each example will say that 'cat' is in
'obfuscate' (because, 'obfuscate' contains 'cat' as a substring). To allow checks on word boundaries, rather than simple substring checks, you might productively use regular expressions... but I suggest you open a separate question on that, if that's what you require -- all of the code snippets in this answer, depending on your exact requirements, will work equally well if you change the predicate x in paid[j]
into some more sophisticated predicate such as somere.search(paid[j])
for an appropriate RE object somere
.
(Python 2.6 or better -- slight differences in 2.5 and earlier).
If your intention is something else again, such as getting one or all of the indices in d
of the items satisfying your constrain, there are easy solutions for those different problems, too... but, if what you actually require is so far away from what you said, I'd better stop guessing and hope you clarify;-).
(Tested for pandas 1.0.5)
Based on @athlonshi answer (it had ValueError: could not convert string to float: 'big', on C column), full working example without warning:
import pandas as pd
from sklearn.preprocessing import MinMaxScaler
scale = preprocessing.MinMaxScaler()
df = pd.DataFrame({
'A':[14.00,90.20,90.95,96.27,91.21],
'B':[103.02,107.26,110.35,114.23,114.68],
'C':['big','small','big','small','small']
})
print(df)
df[["A","B"]] = pd.DataFrame(scale.fit_transform(df[["A","B"]].values), columns=["A","B"], index=df.index)
print(df)
A B C
0 14.00 103.02 big
1 90.20 107.26 small
2 90.95 110.35 big
3 96.27 114.23 small
4 91.21 114.68 small
A B C
0 0.000000 0.000000 big
1 0.926219 0.363636 small
2 0.935335 0.628645 big
3 1.000000 0.961407 small
4 0.938495 1.000000 small
var Global = 'Global';
function LocalToGlobalVariable() {
// This creates a local variable.
var Local = '5';
// Doing this makes the variable available for one session
// (a page refresh - it's the session not local)
sessionStorage.LocalToGlobalVar = Local;
// It can be named anything as long as the sessionStorage
// references the local variable.
// Otherwise it won't work.
// This refreshes the page to make the variable take
// effect instead of the last variable set.
location.reload(false);
};
// This calls the variable outside of the function for whatever use you want.
sessionStorage.LocalToGlobalVar;
I realize there is probably a lot of syntax errors in this but its the general idea... Thanks so much LayZee for pointing this out... You can find what a local and session Storage is at http://www.w3schools.com/html/html5_webstorage.asp. I have needed the same thing for my code and this was a really good idea.
I am working on TF-2.1 and torch, so I don't want to specific this automacit choosing in any ML frame. I just use original nvidia-smi and os.environ to get a vacant gpu.
def auto_gpu_selection(usage_max=0.01, mem_max=0.05):
"""Auto set CUDA_VISIBLE_DEVICES for gpu
:param mem_max: max percentage of GPU utility
:param usage_max: max percentage of GPU memory
:return:
"""
os.environ['CUDA_DEVICE_ORDER'] = 'PCI_BUS_ID'
log = str(subprocess.check_output("nvidia-smi", shell=True)).split(r"\n")[6:-1]
gpu = 0
# Maximum of GPUS, 8 is enough for most
for i in range(8):
idx = i*3 + 2
if idx > log.__len__()-1:
break
inf = log[idx].split("|")
if inf.__len__() < 3:
break
usage = int(inf[3].split("%")[0].strip())
mem_now = int(str(inf[2].split("/")[0]).strip()[:-3])
mem_all = int(str(inf[2].split("/")[1]).strip()[:-3])
# print("GPU-%d : Usage:[%d%%]" % (gpu, usage))
if usage < 100*usage_max and mem_now < mem_max*mem_all:
os.environ["CUDA_VISIBLE_EVICES"] = str(gpu)
print("\nAuto choosing vacant GPU-%d : Memory:[%dMiB/%dMiB] , GPU-Util:[%d%%]\n" %
(gpu, mem_now, mem_all, usage))
return
print("GPU-%d is busy: Memory:[%dMiB/%dMiB] , GPU-Util:[%d%%]" %
(gpu, mem_now, mem_all, usage))
gpu += 1
print("\nNo vacant GPU, use CPU instead\n")
os.environ["CUDA_VISIBLE_EVICES"] = "-1"
If I can get any GPU, it will set CUDA_VISIBLE_EVICES to BUSID of that gpu :
GPU-0 is busy: Memory:[5738MiB/11019MiB] , GPU-Util:[60%]
GPU-1 is busy: Memory:[9688MiB/11019MiB] , GPU-Util:[78%]
Auto choosing vacant GPU-2 : Memory:[1MiB/11019MiB] , GPU-Util:[0%]
else, set to -1 to use CPU:
GPU-0 is busy: Memory:[8900MiB/11019MiB] , GPU-Util:[95%]
GPU-1 is busy: Memory:[4674MiB/11019MiB] , GPU-Util:[35%]
GPU-2 is busy: Memory:[9784MiB/11016MiB] , GPU-Util:[74%]
No vacant GPU, use CPU instead
Note: Use this function before you import any ML frame that require a GPU, then it can automatically choose a gpu. Besides, it's easy for you to set multiple tasks.
For people looking to do if statements with multiple 'or' values.
<div ng-if="::(a || b || c || d || e || f)"><div>
$('.formData').attr('value','YOUR_VALUE')
Yes. Run ssh-add on the client machine. Then repeat command ssh-copy-id [email protected]
I tried using Adam B's answer, however, it didn't work for me. Instead, I found the following workaround for adding legends to pointplots.
import matplotlib.patches as mpatches
red_patch = mpatches.Patch(color='#bb3f3f', label='Label1')
black_patch = mpatches.Patch(color='#000000', label='Label2')
In the pointplots, the color can be specified as mentioned in previous answers. Once these patches corresponding to the different plots are set up,
plt.legend(handles=[red_patch, black_patch])
And the legend ought to appear in the pointplot.
I might approach it like so (CSS and HTML):
html,_x000D_
body {_x000D_
margin: 0px;_x000D_
}_x000D_
#logo {_x000D_
position: absolute; /* Reposition logo from the natural layout */_x000D_
left: 75px;_x000D_
top: 0px;_x000D_
width: 300px;_x000D_
height: 200px;_x000D_
z-index: 2;_x000D_
}_x000D_
#content {_x000D_
margin-top: 100px; /* Provide buffer for logo */_x000D_
}_x000D_
#links {_x000D_
height: 75px;_x000D_
margin-left: 400px; /* Flush links (with a 25px "padding") right of logo */_x000D_
}
_x000D_
<div id="logo">_x000D_
<img src="https://via.placeholder.com/200x100" />_x000D_
</div>_x000D_
<div id="content">_x000D_
_x000D_
<div id="links">dssdfsdfsdfsdf</div>_x000D_
</div>
_x000D_
Basically,
DTO: "Data transfer objects " can travel between seperate layers in software architecture.
VO: "Value objects " hold a object such as Integer,Money etc.
POJO: Plain Old Java Object which is not a special object.
Java Beans: requires a Java Class
to be serializable, have a no-arg
constructor and a getter and setter for each field
If FName and LName contain NULL values, then you will need special handling to avoid unnecessary extra preceeding, trailing, and middle spaces. Also, if Address1 contains NULL values, then you need to have special handling to prevent adding unnecessary ', ' at the beginning of your address string.
If you are using SQL Server 2012, then you can use CONCAT (NULLs are automatically treated as empty strings) and IIF:
INSERT INTO TblStuff (FullName, Address, City, Zip)
SELECT FullName = REPLACE(RTRIM(LTRIM(CONCAT(FName, ' ', Middle, ' ', LName))), ' ', ' ')
, Address = CONCAT(Address1, IIF(Address2 IS NOT NULL, CONCAT(', ', Address2), ''))
, City
, Zip
FROM tblImport (NOLOCK);
Otherwise, this will work:
INSERT INTO TblStuff (FullName, Address, City, Zip)
SELECT FullName = REPLACE(RTRIM(LTRIM(ISNULL(FName, '') + ' ' + ISNULL(Middle, '') + ' ' + ISNULL(LName, ''))), ' ', ' ')
, Address = ISNULL(Address1, '') + CASE
WHEN Address2 IS NOT NULL THEN ', ' + Address2
ELSE '' END
, City
, Zip
FROM tblImport (NOLOCK);
The best way is to create a virtual env. first and then do pip install , everything will work fine
Try this
import ("strconv")
value := "123"
number,err := strconv.ParseUint(value, 10, 32)
finalIntNum := int(number) //Convert uint64 To int
echo dirname(__DIR__);
But note the __DIR__
constant was added in PHP 5.3.0.
Lets Experiment with below code Playground.I Hope will clear idea what is optional and reason of using it.
var sampleString: String? ///Optional, Possible to be nil
sampleString = nil ////perfactly valid as its optional
sampleString = "some value" //Will hold the value
if let value = sampleString{ /// the sampleString is placed into value with auto force upwraped.
print(value+value) ////Sample String merged into Two
}
sampleString = nil // value is nil and the
if let value = sampleString{
print(value + value) ///Will Not execute and safe for nil checking
}
// print(sampleString! + sampleString!) //this line Will crash as + operator can not add nil
Since the fields are empty they are not valid, so the ng-invalid
and ng-invalid-required
classes are added properly.
You can use the class ng-pristine
to check out whether the fields have already been used or not.
The reset_index() is a pandas DataFrame method that will transfer index values into the DataFrame as columns. The default setting for the parameter is drop=False (which will keep the index values as columns).
All you have to do add .reset_index(inplace=True)
after the name of the DataFrame:
df.reset_index(inplace=True)
Just add the class disabled
on your anchor:
<a class="dropdown-toggle disabled" href="{your link}">
Dropdown</a>
And you are free to go.
For PyCharm 2018.1 on Mac:
Preferences (?+,), then Editor -> Code Style
:
For PyCharm 2018.3 on Windows:
File -> Settings (Ctrl+Alt+S), then Editor -> Code Style
:
To follow PEP-8 set Hard wrap at
to 80.
You are using the same connection for the DataReader
and the ExecuteNonQuery
. This is not supported, according to MSDN:
Note that while a DataReader is open, the Connection is in use exclusively by that DataReader. You cannot execute any commands for the Connection, including creating another DataReader, until the original DataReader is closed.
Updated 2018: link to MSDN
From book :
Choose a Random Row Using an Offset
Still another technique that avoids problems found in the preceding alternatives is to count the rows in the data set and return a random number between 0 and the count. Then use this number as an offset when querying the data set
$rand = "SELECT ROUND(RAND() * (SELECT COUNT(*) FROM Bugs))";
$offset = $pdo->query($rand)->fetch(PDO::FETCH_ASSOC);
$sql = "SELECT * FROM Bugs LIMIT 1 OFFSET :offset";
$stmt = $pdo->prepare($sql);
$stmt->execute( $offset );
$rand_bug = $stmt->fetch();
Use this solution when you can’t assume contiguous key values and you need to make sure each row has an even chance of being selected.
I find that the accepted answer here is overly complicated for most use cases. This code does the job well (using jQuery) and differentiates between fully visible and partially visible elements:
var element = $("#element");
var topOfElement = element.offset().top;
var bottomOfElement = element.offset().top + element.outerHeight(true);
var $window = $(window);
$window.bind('scroll', function() {
var scrollTopPosition = $window.scrollTop()+$window.height();
var windowScrollTop = $window.scrollTop()
if (windowScrollTop > topOfElement && windowScrollTop < bottomOfElement) {
// Element is partially visible (above viewable area)
console.log("Element is partially visible (above viewable area)");
} else if (windowScrollTop > bottomOfElement && windowScrollTop > topOfElement) {
// Element is hidden (above viewable area)
console.log("Element is hidden (above viewable area)");
} else if (scrollTopPosition < topOfElement && scrollTopPosition < bottomOfElement) {
// Element is hidden (below viewable area)
console.log("Element is hidden (below viewable area)");
} else if (scrollTopPosition < bottomOfElement && scrollTopPosition > topOfElement) {
// Element is partially visible (below viewable area)
console.log("Element is partially visible (below viewable area)");
} else {
// Element is completely visible
console.log("Element is completely visible");
}
});
That error is a parse error. The parser is throwing it while going through the code, trying to understand it. No code is being executed yet in the parsing stage. Because of that it hasn't yet executed the error_reporting
line, therefore the error reporting settings aren't changed yet.
You cannot change error reporting settings (or really, do anything) in a file with syntax errors.
Assuming that you only want to read a single line, then use LINE_MAX
, which is defined in <limits.h>
:
#include <stdio.h>
#include <limits.h>
...
char line[LINE_MAX];
...
if (fgets(line, LINE_MAX, stdin) != NULL) {
...
}
...
If you are on linux and just want to replace the word dog
with cat
you can do:
text.txt:
Hi, i am a dog and dog's are awesome, i love dogs! dog dog dogs!
Linux Command:
sed -i 's/dog/cat/g' test.txt
Output:
Hi, i am a cat and cat's are awesome, i love cats! cat cat cats!
Original Post: https://askubuntu.com/questions/20414/find-and-replace-text-within-a-file-using-commands
You can simply use decimal.ToString()
For two decimals
myDecimal.ToString("0.00");
For four decimals
myDecimal.ToString("0.0000");
This gives dot as decimal separator, and no thousand separator regardless of culture.
tl;dr
"Foo" and "bar" as metasyntactic variables were popularised by MIT and DEC, the first references are in work on LISP and PDP-1 and Project MAC from 1964 onwards.
Many of these people were in MIT's Tech Model Railroad Club, where we find the first documented use of "foo" in tech circles in 1959 (and a variant in 1958).
Both "foo" and "bar" (and even "baz") were well known in popular culture, especially from Smokey Stover and Pogo comics, which will have been read by many TMRC members.
Also, it seems likely the military FUBAR contributed to their popularity.
The use of lone "foo" as a nonsense word is pretty well documented in popular culture in the early 20th century, as is the military FUBAR. (Some background reading: FOLDOC FOLDOC Jargon File Jargon File Wikipedia RFC3092)
OK, so let's find some references.
STOP PRESS! After posting this answer, I discovered this perfect article about "foo" in the Friday 14th January 1938 edition of The Tech ("MIT's oldest and largest newspaper & the first newspaper published on the web"), Volume LVII. No. 57, Price Three Cents:
On Foo-ism
The Lounger thinks that this business of Foo-ism has been carried too far by its misguided proponents, and does hereby and forthwith take his stand against its abuse. It may be that there's no foo like an old foo, and we're it, but anyway, a foo and his money are some party. (Voice from the bleachers- "Don't be foo-lish!")
As an expletive, of course, "foo!" has a definite and probably irreplaceable position in our language, although we fear that the excessive use to which it is currently subjected may well result in its falling into an early (and, alas, a dark) oblivion. We say alas because proper use of the word may result in such happy incidents as the following.
It was an 8.50 Thermodynamics lecture by Professor Slater in Room 6-120. The professor, having covered the front side of the blackboard, set the handle that operates the lift mechanism, turning meanwhile to the class to continue his discussion. The front board slowly, majestically, lifted itself, revealing the board behind it, and on that board, writ large, the symbols that spelled "FOO"!
The Tech newspaper, a year earlier, the Letter to the Editor, September 1937:
By the time the train has reached the station the neophytes are so filled with the stories of the glory of Phi Omicron Omicron, usually referred to as Foo, that they are easy prey.
...
It is not that I mind having lost my first four sons to the Grand and Universal Brotherhood of Phi Omicron Omicron, but I do wish that my fifth son, my baby, should at least be warned in advance.
Hopefully yours,
Indignant Mother of Five.
And The Tech in December 1938:
General trend of thought might be best interpreted from the remarks made at the end of the ballots. One vote said, '"I don't think what I do is any of Pulver's business," while another merely added a curt "Foo."
The first documented "foo" in tech circles is probably 1959's Dictionary of the TMRC Language:
FOO: the sacred syllable (FOO MANI PADME HUM); to be spoken only when under inspiration to commune with the Deity. Our first obligation is to keep the Foo Counters turning.
These are explained at FOLDOC. The dictionary's compiler Pete Samson said in 2005:
Use of this word at TMRC antedates my coming there. A foo counter could simply have randomly flashing lights, or could be a real counter with an obscure input.
And from 1996's Jargon File 4.0.0:
Earlier versions of this lexicon derived 'baz' as a Stanford corruption of bar. However, Pete Samson (compiler of the TMRC lexicon) reports it was already current when he joined TMRC in 1958. He says "It came from "Pogo". Albert the Alligator, when vexed or outraged, would shout 'Bazz Fazz!' or 'Rowrbazzle!' The club layout was said to model the (mythical) New England counties of Rowrfolk and Bassex (Rowrbazzle mingled with (Norfolk/Suffolk/Middlesex/Essex)."
A year before the TMRC dictionary, 1958's MIT Voo Doo Gazette ("Humor suplement of the MIT Deans' office") (PDF) mentions Foocom, in "The Laws of Murphy and Finagle" by John Banzhaf (an electrical engineering student):
Further research under a joint Foocom and Anarcom grant expanded the law to be all embracing and universally applicable: If anything can go wrong, it will!
Also 1964's MIT Voo Doo (PDF) references the TMRC usage:
Yes! I want to be an instant success and snow customers. Send me a degree in: ...
Foo Counters
Foo Jung
Let's find "foo", "bar" and "foobar" published in code examples.
So, Jargon File 4.4.7 says of "foobar":
Probably originally propagated through DECsystem manuals by Digital Equipment Corporation (DEC) in 1960s and early 1970s; confirmed sightings there go back to 1972.
The first published reference I can find is from February 1964, but written in June 1963, The Programming Language LISP: its Operation and Applications by Information International, Inc., with many authors, but including Timothy P. Hart and Michael Levin:
Thus, since "FOO" is a name for itself, "COMITRIN" will treat both "FOO" and "(FOO)" in exactly the same way.
Also includes other metasyntactic variables such as: FOO CROCK GLITCH / POOT TOOR / ON YOU / SNAP CRACKLE POP / X Y Z
I expect this is much the same as this next reference of "foo" from MIT's Project MAC in January 1964's AIM-064, or LISP Exercises by Timothy P. Hart and Michael Levin:
car[((FOO . CROCK) . GLITCH)]
It shares many other metasyntactic variables like: CHI / BOSTON NEW YORK / SPINACH BUTTER STEAK / FOO CROCK GLITCH / POOT TOOP / TOOT TOOT / ISTHISATRIVIALEXCERCISE / PLOOP FLOT TOP / SNAP CRACKLE POP / ONE TWO THREE / PLANE SUB THRESHER
For both "foo" and "bar" together, the earliest reference I could find is from MIT's Project MAC in June 1966's AIM-098, or PDP-6 LISP by none other than Peter Samson:
EXPLODE, like PRIN1, inserts slashes, so (EXPLODE (QUOTE FOO/ BAR)) PRIN1's as (F O O // / B A R) or PRINC's as (F O O / B A R).
Some more recallations.
@Walter Mitty recalled on this site in 2008:
I second the jargon file regarding Foo Bar. I can trace it back at least to 1963, and PDP-1 serial number 2, which was on the second floor of Building 26 at MIT. Foo and Foo Bar were used there, and after 1964 at the PDP-6 room at project MAC.
John V. Everett recalls in 1996:
When I joined DEC in 1966, foobar was already being commonly used as a throw-away file name. I believe fubar became foobar because the PDP-6 supported six character names, although I always assumed the term migrated to DEC from MIT. There were many MIT types at DEC in those days, some of whom had worked with the 7090/7094 CTSS. Since the 709x was also a 36 bit machine, foobar may have been used as a common file name there.
Foo and bar were also commonly used as file extensions. Since the text editors of the day operated on an input file and produced an output file, it was common to edit from a .foo file to a .bar file, and back again.
It was also common to use foo to fill a buffer when editing with TECO. The text string to exactly fill one disk block was IFOO$HXA127GA$$. Almost all of the PDP-6/10 programmers I worked with used this same command string.
Daniel P. B. Smith in 1998:
Dick Gruen had a device in his dorm room, the usual assemblage of B-battery, resistors, capacitors, and NE-2 neon tubes, which he called a "foo counter." This would have been circa 1964 or so.
Robert Schuldenfrei in 1996:
The use of FOO and BAR as example variable names goes back at least to 1964 and the IBM 7070. This too may be older, but that is where I first saw it. This was in Assembler. What would be the FORTRAN integer equivalent? IFOO and IBAR?
Paul M. Wexelblat in 1992:
The earliest PDP-1 Assembler used two characters for symbols (18 bit machine) programmers always left a few words as patch space to fix problems. (Jump to patch space, do new code, jump back) That space conventionally was named FU: which stood for Fxxx Up, the place where you fixed Fxxx Ups. When spoken, it was known as FU space. Later Assemblers ( e.g. MIDAS allowed three char tags so FU became FOO, and as ALL PDP-1 programmers will tell you that was FOO space.
Bruce B. Reynolds in 1996:
On the IBM side of FOO(FU)BAR is the use of the BAR side as Base Address Register; in the middle 1970's CICS programmers had to worry out the various xxxBARs...I think one of those was FRACTBAR...
Here's a straight IBM "BAR" from 1955.
Other early references:
1973 foo bar International Joint Council on Artificial Intelligence
1975 foo bar International Joint Council on Artificial Intelligence
I haven't been able to find any references to foo bar as "inverted foo signal" as suggested in RFC3092 and elsewhere.
Here are a some of even earlier F00s but I think they're coincidences/false positives:
Add this to your ajax call:
contentType: "application/json; charset=utf-8",
dataType: "json"
You should use static_cast<char>(i)
to cast the integer i
to char
.
reinterpret_cast
should almost never be used, unless you want to cast one type into a fundamentally different type.
Also reinterpret_cast
is machine dependent so safely using it requires complete understanding of the types as well as how the compiler implements the cast.
For more information about C++ casting see:
It specifies that an iterator has come to an end. You can think of yield break
as a return
statement which does not return a value.
For example, if you define a function as an iterator, the body of the function may look like this:
for (int i = 0; i < 5; i++)
{
yield return i;
}
Console.Out.WriteLine("You will see me");
Note that after the loop has completed all its cycles, the last line gets executed and you will see the message in your console app.
Or like this with yield break
:
int i = 0;
while (true)
{
if (i < 5)
{
yield return i;
}
else
{
// note that i++ will not be executed after this
yield break;
}
i++;
}
Console.Out.WriteLine("Won't see me");
In this case the last statement is never executed because we left the function early.
I just wanted to point out that sometimes this error happens because a function has been used as a high order function (passed as an argument) and then the scope of this
got lost. In such cases, I would recommend passing such function bound to this
. E.g.
this.myFunction.bind(this);
I think this would do it:
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".divlink").click(function(){
$("#content").attr("src" , $(this).attr("ref"));
});
});
</script>
</head>
<body>
<iframe id="content"></iframe>
<a href="#" ref="page1.html" class="divlink" >Page 1</a><br />
<a href="#" ref="page2.html" class="divlink" >Page 2</a><br />
<a href="#" ref="page3.html" class="divlink" >Page 3</a><br />
<a href="#" ref="page4.html" class="divlink" >Page 4</a><br />
<a href="#" ref="page5.html" class="divlink" >Page 5</a><br />
<a href="#" ref="page6.html" class="divlink" >Page 6</a><br />
</body>
</html>
By the way if you can avoid Jquery, you can just use the target
attribute of <a>
element:
<html>
<body>
<iframe id="content" name="content"></iframe>
<a href="page1.html" target="content" >Page 1</a><br />
<a href="page2.html" target="content" >Page 2</a><br />
<a href="page3.html" target="content" >Page 3</a><br />
<a href="page4.html" target="content" >Page 4</a><br />
<a href="page5.html" target="content" >Page 5</a><br />
<a href="page6.html" target="content" >Page 6</a><br />
</body>
</html>
One can replace unicode
with u''.__class__
to handle the missing unicode
class in Python 3. For both Python 2 and 3, you can use the construct
isinstance(unicode_or_str, u''.__class__)
or
type(unicode_or_str) == type(u'')
Depending on your further processing, consider the different outcome:
Python 3
>>> isinstance('text', u''.__class__)
True
>>> isinstance(u'text', u''.__class__)
True
Python 2
>>> isinstance(u'text', u''.__class__)
True
>>> isinstance('text', u''.__class__)
False
You can use printf
:
$ original='USCAGoleta9311734.5021-120.1287855805'
$ printf '%-.2s' "$original"
US
This is not a new answer, but it helped me to understand the different aspects of the answers above (and it is too much for a comment).
Using Git Bash just try:
me@pc MINGW64 /c/Test
$ ls -al
total 16
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 ./
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:11 ../
me@pc MINGW64 /c/Test
$ git init
Initialized empty Git repository in C:/Test/.git/
me@pc MINGW64 /c/Test (master)
$ ls -al
total 20
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 ./
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:11 ../
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 .git/
me@pc MINGW64 /c/Test (master)
$ cd .git
me@pc MINGW64 /c/Test/.git (GIT_DIR!)
$ ls -al
total 15
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 ./
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 ../
-rw-r--r-- 1 myid 1049089 130 Apr 1 11:35 config
-rw-r--r-- 1 myid 1049089 73 Apr 1 11:35 description
-rw-r--r-- 1 myid 1049089 23 Apr 1 11:35 HEAD
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 hooks/
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 info/
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 objects/
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:35 refs/
Same with git --bare
:
me@pc MINGW64 /c/Test
$ ls -al
total 16
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:36 ./
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:11 ../
me@pc MINGW64 /c/Test
$ git init --bare
Initialized empty Git repository in C:/Test/
me@pc MINGW64 /c/Test (BARE:master)
$ ls -al
total 23
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:36 ./
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:11 ../
-rw-r--r-- 1 myid 1049089 104 Apr 1 11:36 config
-rw-r--r-- 1 myid 1049089 73 Apr 1 11:36 description
-rw-r--r-- 1 myid 1049089 23 Apr 1 11:36 HEAD
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:36 hooks/
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:36 info/
drwxr-xr-x 1 myid 1049089 0 Apr 1 11:36 objects/
what'd you say about Cross join solution?
SELECT t1.*, t2.*
FROM table1 t1
INNER JOIN table2 t2
ON 1=1;
ALTER TABLE MyTable MODIFY Col3 varchar(20) NULL;
I also underwent the same issue as Maven doesn't create the settings.xml
file under .m2
folder. What I did was the following and it works smoothly without any issues.
Go to the location where you maven was unzipped.
Direct to following path,
\apache-maven-3.0.4\conf\
and copy the settings.xml
file and paste it inside your .m2
folder.
Now create a maven project.
If you really need to do it in separate transaction you need to use REQUIRES_NEW
and live with the performance overhead. Watch out for dead locks.
I'd rather do it the other way:
For the first question I think answer would be:
<your DataFrame>.rename(columns={'count':'Total_Numbers'})
or
<your DataFrame>.columns = ['ID', 'Region', 'Total_Numbers']
As for second one I'd say the answer would be no. It's possible to use it like 'df.ID' because of python datamodel:
Attribute references are translated to lookups in this dictionary, e.g., m.x is equivalent to m.dict["x"]
There's actually a very good blog post that lists pro's and cons of three different approaches to this problem by Martyn Davies. You can read it at https://sendgrid.com/blog/embedding-images-emails-facts/.
I'd like to add a fourth approach using CSS background images.
Add
<div id="myImage"></div>
to your e-mail body and a css class like:
#myImage {
background-image: url('data:image/png;base64,iVBOR...[some more encoding]...rkggg==');
width: [the-actual-image-width];
height: [the-actual-image-height];
}
Well one of the option is to goto your workspace, your project folder, then bin copy and paste the log4j properites file. it would be better to paste the file also in source folder.
Now you may want to know from where to get this file, download smslib, then extract it, then smslib->misc->log4j sample configuration -> log4j here you go.
This what helped,me so just wanted to know.
I had the same problem and solved it with the following code. I'm not sure how it will behave on a phone with hardware keyboard.
// TextEdit
final EditText textEdit = new EditText(this);
// Builder
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Enter text");
alert.setView(textEdit);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String text = textEdit.getText().toString();
finish();
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
// Dialog
AlertDialog dialog = alert.create();
dialog.setOnShowListener(new OnShowListener() {
@Override
public void onShow(DialogInterface dialog) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(textEdit, InputMethodManager.SHOW_IMPLICIT);
}
});
dialog.show();
OS_ACTIVITY_MODE didn't work for me (it may have been because I typo'd disable
as disabled
, but isn't that more natural?!?), or at least didn't prevent a great deal of messages. So here's the real deal with the environment variables.
https://llvm.org/svn/llvm-project/lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
lldb_private::Error
PlatformDarwin::LaunchProcess(lldb_private::ProcessLaunchInfo &launch_info) {
// Starting in Fall 2016 OSes, NSLog messages only get mirrored to stderr
// if the OS_ACTIVITY_DT_MODE environment variable is set. (It doesn't
// require any specific value; rather, it just needs to exist).
// We will set it here as long as the IDE_DISABLED_OS_ACTIVITY_DT_MODE flag
// is not set. Xcode makes use of IDE_DISABLED_OS_ACTIVITY_DT_MODE to tell
// LLDB *not* to muck with the OS_ACTIVITY_DT_MODE flag when they
// specifically want it unset.
const char *disable_env_var = "IDE_DISABLED_OS_ACTIVITY_DT_MODE";
auto &env_vars = launch_info.GetEnvironmentEntries();
if (!env_vars.ContainsEnvironmentVariable(disable_env_var)) {
// We want to make sure that OS_ACTIVITY_DT_MODE is set so that
// we get os_log and NSLog messages mirrored to the target process
// stderr.
if (!env_vars.ContainsEnvironmentVariable("OS_ACTIVITY_DT_MODE"))
env_vars.AppendArgument(llvm::StringRef("OS_ACTIVITY_DT_MODE=enable"));
}
// Let our parent class do the real launching.
return PlatformPOSIX::LaunchProcess(launch_info);
}
So setting OS_ACTIVITY_DT_MODE
to "NO" in the environment variables (GUI method explained in Schemes screenshot in main answer) makes it work for me.
As far as NSLog
being the dumping ground for system messages, errors, and your own debugging: a real logging approach is probably called for anyway, e.g. https://github.com/fpillet/NSLogger .
OR
Drink the new Kool-Aid: http://asciiwwdc.com/2016/sessions/721 https://developer.apple.com/videos/play/wwdc2016/721/ It's not surprising that there are some hitches after overhauling the entire logging API.
ADDENDUM
Anyway, NSLog
is just a shim:
https://developer.apple.com/library/content/releasenotes/Miscellaneous/RN-Foundation-OSX10.12/
NSLog / CFLog
NSLog is now just a shim to os_log in most circumstances.
Only makes sense now to quote the source for the other env variable. Quite a disparate place, this time from Apple internals. Not sure why they are overlapping. [Incorrect comment about NSLog
removed]
[Edited 22 Sep]: I wonder what "release" and "stream" do differently than "debug". Not enough source.
e = getenv("OS_ACTIVITY_MODE");
if (e) {
if (strcmp(e, "release") == 0) {
mode = voucher_activity_mode_release;
} else if (strcmp(e, "debug") == 0) {
mode = voucher_activity_mode_debug;
} else if (strcmp(e, "stream") == 0) {
mode = voucher_activity_mode_stream;
} else if (strcmp(e, "disable") == 0) {
mode = voucher_activity_mode_disable;
}
}
Changing the repo url from ssh to https is not very meaningful to me. As I prefer ssh
over https
because of some sort of extra benefits which I don't want to discard. Above answers are pretty good and accurate. If you face this problem in GitLab, please go to their official documentation page and change your config file like that.
Host gitlab.com
Hostname altssh.gitlab.com
User git
Port 443
PreferredAuthentications publickey
IdentityFile ~/.ssh/gitlab
Since "$(this).parent().index();" and "$(this).parent('table').index();" don't work for me, I use this code instead:
$('td').click(function(){
var row_index = $(this).closest("tr").index();
var col_index = $(this).index();
});
These steps worked for me.
Instead of dtAll = dtOne.Copy();
in Jeromy Irvine's answer you can start with an empty DataTable
and merge one-by-one iteratively:
dtAll = new DataTable();
...
dtAll.Merge(dtOne);
dtAll.Merge(dtTwo);
dtAll.Merge(dtThree);
...
and so on.
This technique is useful in a loop where you want to iteratively merge data tables:
DataTable dtAllCountries = new DataTable();
foreach(String strCountry in listCountries)
{
DataTable dtCountry = getData(strCountry); //Some function that returns a data table
dtAllCountries.Merge(dtCountry);
}
Building on and and enhancing the answer by @piro , you can build a contextmanager. This allows for very readable code which will disable the alaram signal after a successful run (sets signal.alarm(0))
@contextmanager
def timeout(duration):
def timeout_handler(signum, frame):
raise Exception(f'block timedout after {duration} seconds')
signal.signal(signal.SIGALRM, timeout_handler)
signal.alarm(duration)
yield
signal.alarm(0)
def sleeper(duration):
time.sleep(duration)
print('finished')
Example usage:
In [19]: with timeout(2):
...: sleeper(1)
...:
finished
In [20]: with timeout(2):
...: sleeper(3)
...:
---------------------------------------------------------------------------
Exception Traceback (most recent call last)
<ipython-input-20-66c78858116f> in <module>()
1 with timeout(2):
----> 2 sleeper(3)
3
<ipython-input-7-a75b966bf7ac> in sleeper(t)
1 def sleeper(t):
----> 2 time.sleep(t)
3 print('finished')
4
<ipython-input-18-533b9e684466> in timeout_handler(signum, frame)
2 def timeout(duration):
3 def timeout_handler(signum, frame):
----> 4 raise Exception(f'block timedout after {duration} seconds')
5 signal.signal(signal.SIGALRM, timeout_handler)
6 signal.alarm(duration)
Exception: block timedout after 2 seconds
With Rake:
rake spec SPEC=path/to/spec.rb
(Credit goes to this answer. Go vote him up.)
EDIT (thanks to @cirosantilli): To run one specific scenario within the spec, you have to supply a regex pattern match that matches the description.
rake spec SPEC=path/to/spec.rb \
SPEC_OPTS="-e \"should be successful and return 3 items\""
Michael-O gave useful approach to solve the problem. Another way to solve this is by starting the server with Putty Console.
You can find this info right in the API reference.
var today = DateTime.Today;
var tomorrow = today.AddDays(1);
var yesterday = today.AddDays(-1);
$cats = wp_get_post_terms( $post->ID, 'product_cat' );
foreach($cats as $cat){
/*check for category having parent or not except category id=1 which is wordpress default category (Uncategorized)*/
if($cat->parent != '0' && $cat->term_id != 1){
echo '<h2 class="link"><a href="'.get_category_link($cat->term_id ).'">'.$cat->name.'</a></h2>';
break;
}
}
Add this code at the end of your .htaccess file
RewriteEngine on
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
Ok, here's a basic join query that gets the correct records:
int[] selectedRolesArr = GetSelectedRoles();
if( selectedRolesArr != null && selectedRolesArr.Length > 0 )
{
//this join version requires the use of distinct to prevent muliple records
//being returned for users with more than one company role.
IQueryable retVal = (from u in context.Users
join c in context.CompanyRolesToUsers
on u.Id equals c.UserId
where u.LastName.Contains( "fra" ) &&
selectedRolesArr.Contains( c.CompanyRoleId )
select u).Distinct();
}
But here's the code that most easily integrates with the algorithm that we already had in place:
int[] selectedRolesArr = GetSelectedRoles();
if ( useAnd )
{
predicateAnd = predicateAnd.And( u => (from c in context.CompanyRolesToUsers
where selectedRolesArr.Contains(c.CompanyRoleId)
select c.UserId).Contains(u.Id));
}
else
{
predicateOr = predicateOr.Or( u => (from c in context.CompanyRolesToUsers
where selectedRolesArr.Contains(c.CompanyRoleId)
select c.UserId).Contains(u.Id) );
}
which is thanks to a poster at the LINQtoSQL forum
import requests
# assume sending two files
url = "put ur url here"
f1 = open("file 1 path", 'rb')
f2 = open("file 2 path", 'rb')
response = requests.post(url,files={"file1 name": f1, "file2 name":f2})
print(response)
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverPath);
After this you may use the below line to avoid error..(access denied etc.)
request.Proxy = null;
You can animate it after the fadeIn completes using the callback as shown below:
$("#Friends").fadeIn('slow',function(){
$(this).animate({'top': '-=30px'},'slow');
});
You are looking for a web crawler. You can use JSoup to do this, here is basic example
You could use createElement()
method for creating that textbox
a user-defined function may server better, at least to hide the logic - esp. if you need to do this in more than one query
During the preflight request, you should see the following two headers: Access-Control-Request-Method and Access-Control-Request-Headers. These request headers are asking the server for permissions to make the actual request. Your preflight response needs to acknowledge these headers in order for the actual request to work.
For example, suppose the browser makes a request with the following headers:
Origin: http://yourdomain.com
Access-Control-Request-Method: POST
Access-Control-Request-Headers: X-Custom-Header
Your server should then respond with the following headers:
Access-Control-Allow-Origin: http://yourdomain.com
Access-Control-Allow-Methods: GET, POST
Access-Control-Allow-Headers: X-Custom-Header
Pay special attention to the Access-Control-Allow-Headers response header. The value of this header should be the same headers in the Access-Control-Request-Headers request header, and it can not be '*'.
Once you send this response to the preflight request, the browser will make the actual request. You can learn more about CORS here: http://www.html5rocks.com/en/tutorials/cors/
We have two commands, first is "condition_command", second is "result_command". If we need run "result_command" when "condition_command" is successful (errorlevel=0):
condition_command && result_command
If we need run "result_command" when "condition_command" is fail:
condition_command || result_command
Therefore for run "some_command" in case when we have "string" in the file "status.txt":
find "string" status.txt 1>nul && some_command
in case when we have not "string" in the file "status.txt":
find "string" status.txt 1>nul || some_command
A small but important detail for adjusting figure size on a one-off basis (as several commenters above reported "this doesn't work for me"):
You should do plt.figure(figsize=(,)) PRIOR to defining your actual plot. For example:
This should correctly size the plot according to your specified figsize:
values = [1,1,1,2,2,3]
_ = plt.figure(figsize=(10,6))
_ = plt.hist(values,bins=3)
plt.show()
Whereas this will show the plot with the default settings, seeming to "ignore" figsize:
values = [1,1,1,2,2,3]
_ = plt.hist(values,bins=3)
_ = plt.figure(figsize=(10,6))
plt.show()
In iOS 6 you can easily use:
NSUUID *UUID = [NSUUID UUID];
NSString* stringUUID = [UUID UUIDString];
More details in Apple's Documentations
Since Java 7
File file = Paths.get(url.toURI()).toFile();
@Navaneeth and @Antfish, no need to transform you can do like this also because in above solution only top border is visible so for inside curve you can use bottom border.
.box {_x000D_
width: 500px;_x000D_
height: 100px;_x000D_
border: solid 5px #000;_x000D_
border-color: transparent transparent #000 transparent;_x000D_
border-radius: 0 0 240px 50%/60px;_x000D_
}
_x000D_
<div class="box"></div>
_x000D_
If you are going for a console command it would be:
chmod -R 777 /www/store
. The -R
(or --recursive
) options make it recursive.
Or if you want to make all the files in the current directory have all permissions type:
chmod -R 777 ./
If you need more info about chmod
command see: File permission
To add on to what Rob has mentioned. Setting break points in your application allows for the step-by-step processing of the stack. This enables the developer to use the debugger to see at what exact point the method is doing something that was unanticipated.
Since Rob has used the NullPointerException
(NPE) to illustrate something common, we can help to remove this issue in the following manner:
if we have a method that takes parameters such as: void (String firstName)
In our code we would want to evaluate that firstName
contains a value, we would do this like so: if(firstName == null || firstName.equals("")) return;
The above prevents us from using firstName
as an unsafe parameter. Therefore by doing null checks before processing we can help to ensure that our code will run properly. To expand on an example that utilizes an object with methods we can look here:
if(dog == null || dog.firstName == null) return;
The above is the proper order to check for nulls, we start with the base object, dog in this case, and then begin walking down the tree of possibilities to make sure everything is valid before processing. If the order were reversed a NPE could potentially be thrown and our program would crash.
TextInfo.ToTitleCase()
capitalizes the first character in each token of a string.
If there is no need to maintain Acronym Uppercasing, then you should include ToLower()
.
string s = "JOHN DOE";
s = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(s.ToLower());
// Produces "John Doe"
If CurrentCulture is unavailable, use:
string s = "JOHN DOE";
s = new System.Globalization.CultureInfo("en-US", false).TextInfo.ToTitleCase(s.ToLower());
See the MSDN Link for a detailed description.
You should also be able to accomplish a similar thing using the premain method of a Java agent.
The manifest of the agent JAR file must contain the attribute Premain-Class. The value of this attribute is the name of the agent class. The agent class must implement a public static premain method similar in principle to the main application entry point. After the Java Virtual Machine (JVM) has initialized, each premain method will be called in the order the agents were specified, then the real application main method will be called. Each premain method must return in order for the startup sequence to proceed.
if you want to filter the tuples you can use on this way:
select distinct (case a > b then (a,b) else (b,a) end) from pairs
the good stuff is you don't have to use group by.
There are 2 .net framework version are given under the features in add role/ features in server 2012
a. 3.5
b. 4.5
Depending up on used framework you can enable HTTP-Activation under WCF services. :)
the for-loop for files uses the $IFS shell variable. in the given script, filenames with a character in them that also is in the $IFS-variable will be seen as two different files in the for-loop. This script fixes it: multiline-mode modifier as given sed-manual doesn't seem to work by default on my ubuntu box, so i sought for a different implemenation and found this with an iterating label, essentially it will only start substitution on the last line of the file if i've understood it correctly.
#!/bin/sh
#
# A git hook script to find and fix trailing whitespace
# in your commits. Bypass it with the --no-verify option
# to git-commit
#
if git rev-parse --verify HEAD >/dev/null 2>&1
then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi
SAVEIFS="$IFS"
# only use new-line character as seperator, introduces EOL-bug?
IFS='
'
# Find files with trailing whitespace
for FILE in $(
git diff-index --check --cached $against -- \
| sed '/^[+-]/d' \
| ( sed -r 's/:[0-9]+:.*//' || sed -E 's/:[0-9]+:.*//' ) \
| uniq \
)
do
# replace whitespace-characters with nothing
# if first execution of sed-command fails, try second one( MacOSx-version)
(
sed -i ':a;N;$!ba;s/\n\+$//' "$FILE" > /dev/null 2>&1 \
|| \
sed -i '' -E ':a;N;$!ba;s/\n\+$//' "$FILE" \
) \
&& \
# (re-)add files that have been altered to git commit-tree
# when change was a [:space:]-character @EOL|EOF git-history becomes weird...
git add "$FILE"
done
# restore $IFS
IFS="$SAVEIFS"
# exit script with the exit-code of git's check for whitespace-characters
exec git diff-index --check --cached $against --
[1] sed-subsition pattern: How can I replace a newline (\n) using sed? .
[^]
( within [ ] ) is negation in regular expression whereas ^
is "begining of string"
[^a-z]
matches any single character that is not from "a" to "z"
^[a-z]
means string starts with from "a" to "z"
If that number represents milliseconds, use the Date's constructor :
var myDate = new Date(1238540400000);
Hope this makes sense, Check the CPU and Memory utilization and put some threshold value. If the threshold value is crossed,don't allow to create new thread else allow...
On linux
download slimerjs (slimerjs.org)
download firefox version 59
add this environment variable: export SLIMERJSLAUNCHER=/home/en/Letöltések/firefox59/firefox/firefox
on slimerjs download page use this .js program (./slomerjs program.js):
var page = require('webpage').create();
page.open(
'http://www.google.com/search?q=görény',
function()
{
page.render('goo2.pdf');
phantom.exit();
}
);
Use pdftotext to get text on the page.
It is a shorthand for Nullable<int>
. Nullable<T>
is used to allow a value type to be set to null
. Value types usually cannot be null.
Let's say you have multiple pages, with id #page1
#page2
and #page3
. #page1
is the ID of your start page. The first thing you want to do is to redirect to your start page each time the webpage is loading. You do this with javascript:
document.location.hash = "#page1";
Then the next thing you want to do is place some links in your document to the different pages, like for example:
<a href="#page2">Click here to get to page 2.</a>
Then, lastly, you'd want to make sure that only the active page, or target-page is visible, and all other pages stay hidden. You do this with the following declarations in the <style>
element:
<style>
#page1 {display:none}
#page1:target {display:block}
#page2 {display:none}
#page2:target {display:block}
#page3 {display:none}
#page3:target {display:block}
</style>
The error TypeError: 'numpy.ndarray' object is not callable
means that you tried to call a numpy array as a function. We can reproduce the error like so in the repl:
In [16]: import numpy as np
In [17]: np.array([1,2,3])()
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/user/<ipython-input-17-1abf8f3c8162> in <module>()
----> 1 np.array([1,2,3])()
TypeError: 'numpy.ndarray' object is not callable
If we are to assume that the error is indeed coming from the snippet of code that you posted (something that you should check,) then you must have reassigned either pd.rolling_mean
or pd.rolling_std
to a numpy array earlier in your code.
What I mean is something like this:
In [1]: import numpy as np
In [2]: import pandas as pd
In [3]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Works
Out[3]: array([ nan, nan, nan])
In [4]: pd.rolling_mean = np.array([1,2,3])
In [5]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/user/<ipython-input-5-f528129299b9> in <module>()
----> 1 pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...
TypeError: 'numpy.ndarray' object is not callable
So, basically you need to search the rest of your codebase for pd.rolling_mean = ...
and/or pd.rolling_std = ...
to see where you may have overwritten them.
reload(pd)
just before your snippet, which should make it run by restoring the value of pd
to what you originally imported it as, but I still highly recommend that you try to find where you may have reassigned the given functions.
In my case I had to give the IIS_IUSRS
Read\write permission to the log file.
in order to know the phone resolution simply create a image with label mdpi, hdpi, xhdpi and xxhdpi. put these images in respective folder like mdpi, hdpi, xhdpi and xxhdpi. create a image view in layout and load this image. the phone will load the respective image from a specific folder. by this you will get the phone resolution or *dpi it is using.
I have just tested this and works fine.
string test = "Testing 1-2-3";
// convert string to stream
byte[] byteArray = Encoding.ASCII.GetBytes(test);
MemoryStream stream = new MemoryStream(byteArray);
// convert stream to string
StreamReader reader = new StreamReader(stream);
string text = reader.ReadToEnd();
If stream
has already been written to, you might want to seek to the beginning before first before reading out the text: stream.Seek(0, SeekOrigin.Begin);
Do you need to keep your collection sorted at all times? When retrieving the pairs, do you need them to be always sorted, or it's only for a few times (maybe just for presenting)? How big do you expect your collection to be? There are a lot of factors that can help you decide witch method to use.
If you need the collection to be sorted at all times, even when you insert or delete elements and insertion speed is not a problem maybe you should implement some kind of SortedObservableCollection
like @Gerrie Schenck mentioned or check out this implementation.
If you need your collection sorted just for a few times use:
my_collection.OrderBy(p => p.Key);
This will take some time to sort the collection, but even so, it might be the best solution depending on what your doing with it.
With dataclasses, a feature added in Python 3.7, there is now yet another (quite convenient) way to achieve setting default values on class instances. The decorator dataclass
will automatically generate a few methods on your class, such as the constructor. As the documentation linked above notes, "[t]he member variables to use in these generated methods are defined using PEP 526 type annotations".
Considering OP's example, we could implement it like this:
from dataclasses import dataclass
@dataclass
class Foo:
num: int = 0
When constructing an object of this class's type we could optionally overwrite the value.
print('Default val: {}'.format(Foo()))
# Default val: Foo(num=0)
print('Custom val: {}'.format(Foo(num=5)))
# Custom val: Foo(num=5)
I came accross the same problem and solved it by checking my #includes. If you use QKeyEvent you have to make sure that you also include it.
I had a class like this and my error appeared when working with "event"in the .cpp file.
myfile.h
#include <QKeyEvent> // adding this import solved the problem.
class MyClass : public QWidget
{
Q_OBJECT
public:
MyClass(QWidget* parent = 0);
virtual ~QmitkHelpOverlay();
protected:
virtual void keyPressEvent(QKeyEvent* event);
};
One could use the queryParam method, passing it parameter name and an array of values:
public WebTarget queryParam(String name, Object... values);
Example (jersey-client 2.23.2):
WebTarget target = ClientBuilder.newClient().target(URI.create("http://localhost"));
target.path("path")
.queryParam("param_name", Arrays.asList("paramVal1", "paramVal2").toArray())
.request().get();
This will issue request to following URL:
http://localhost/path?param_name=paramVal1¶m_name=paramVal2
It won't work if your file InputStream.Position is set to the end of the stream. My additional lines:
Stream stream = file.InputStream;
stream.Position = 0;
This answer is not accurate because it mix description of UTM and UTM itself (Universal Turing Machine).
We have good answer but from different perspective and it do not show directly flaws in current top answer.
First of all we can agree that human can work as UTM. This mean if we do
CSS + Human == UTM
Then CSS
part is useless because all work can be done by Human
who will do UTM part. Act of clicking can be UTM, because you do not click at random but only in specific places.
Instead of CSS I could use this text (Rule 110):
000 -> 0
001 -> 1
010 -> 1
011 -> 1
100 -> 0
101 -> 1
110 -> 1
111 -> 0
To guide my actions and result will be same. This mean this text UTM? No this is only input (description) that other UTM (human or computer) can read and run. Clicking is enough to run any UTM.
Critical part that CSS lack is ability to change of it own state in arbitrary way, if CSS could generate clicks then it would be UTM. Argument that your clicks are "crank" for CSS is not accurate because real "crank" for CSS is Layout Engine that run it and it should be enough to prove that CSS is UTM.
Yes, there is a shortcut for commenting out lines in Python 3.6 (Spyder).
For Single Line Comment, you can use Ctrl+1. It will look like this #This is a sample piece of code
For multi-line comments, you can use Ctrl+4. It will look like this
#=============
\#your piece of code
\#some more code
\#=============
Note : \
represents that the code is carried to another line.
You can use:
$redirectURL = curl_getinfo($ch,CURLINFO_REDIRECT_URL);
In the documentaion http://contactform7.com/text-fields/#textarea
[textarea* message id:contact-message 10x2 placeholder "Your Message"]
The above will generate a textarea with cols="10" and rows="2"
<textarea name="message" cols="10" rows="2" class="wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required" id="contact-message" aria-required="true" aria-invalid="false" placeholder="Your Message"></textarea>
Regular expressions are your friends:
R> ## also adds missing ')' and sets column name
R> group<-data.frame(group=c("12357e", "12575e", "197e18", "e18947")) )
R> group
group
1 12357e
2 12575e
3 197e18
4 e18947
Now use gsub()
with the simplest possible replacement pattern: empty string:
R> group$groupNoE <- gsub("e", "", group$group)
R> group
group groupNoE
1 12357e 12357
2 12575e 12575
3 197e18 19718
4 e18947 18947
R>
This is not valid TypeScript code. You can not have method invocations in the body of a class.
// INVALID CODE
export class AppComponent {
public n: number = 1;
setTimeout(function() {
n = n + 10;
}, 1000);
}
Instead move the setTimeout
call to the constructor
of the class. Additionally, use the arrow function =>
to gain access to this
.
export class AppComponent {
public n: number = 1;
constructor() {
setTimeout(() => {
this.n = this.n + 10;
}, 1000);
}
}
In TypeScript, you can only refer to class properties or methods via this
. That's why the arrow function =>
is important.
http://css-tricks.com/snippets/css/css-only-image-preloading/
Technique #1
Load the image on the element's regular state, only shift it away with background position. Then move the background position to display it on hover.
#grass { background: url(images/grass.png) no-repeat -9999px -9999px; }
#grass:hover { background-position: bottom left; }
Technique #2
If the element in question already has a background-image applied and you need to change that image, the above won't work. Typically you would go for a sprite here (a combined background image) and just shift the background position. But if that isn't possible, try this. Apply the background image to another page element that is already in use, but doesn't have a background image.
#random-unsuspecting-element { background: url(images/grass.png) no-repeat -9999px -9999px; }
#grass:hover { background: url(images/grass.png) no-repeat; }
I was getting the same error because of jquery CDN (<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
) was added two times in the HTML head.
Java creates a String object for each string literal you use in your code. Any time ""
is used, it is the same as calling new String()
.
Strings are complex data that just "act" like primitive data. String literals are actually objects even though we pretend they're primitive literals, like 6, 6.0, 'c',
etc. So the String "literal" "text"
returns a new String object with value char[] value = {'t','e','x','t}
. Therefore, calling
new String("text");
is actually akin to calling
new String(new String(new char[]{'t','e','x','t'}));
Hopefully from here, you can see why your textbook considers this redundant.
For reference, here is the implementation of String: http://www.docjar.com/html/api/java/lang/String.java.html
It's a fun read and might inspire some insight. It's also great for beginners to read and try to understand, as the code demonstrates very professional and convention-compliant code.
Another good reference is the Java tutorial on Strings: http://docs.oracle.com/javase/tutorial/java/data/strings.html
But please be careful, just now I've discovered one issue when trying to replace all %
with .format
in existing code: '{}'.format(unicode_string)
will try to encode unicode_string and will probably fail.
Just look at this Python interactive session log:
Python 2.7.2 (default, Aug 27 2012, 19:52:55)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2
; s='?'
; u=u'?'
; s
'\xd0\xb9'
; u
u'\u0439'
s
is just a string (called 'byte array' in Python3) and u
is a Unicode string (called 'string' in Python3):
; '%s' % s
'\xd0\xb9'
; '%s' % u
u'\u0439'
When you give a Unicode object as a parameter to %
operator it will produce a Unicode string even if the original string wasn't Unicode:
; '{}'.format(s)
'\xd0\xb9'
; '{}'.format(u)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'latin-1' codec can't encode character u'\u0439' in position 0: ordinal not in range(256)
but the .format
function will raise "UnicodeEncodeError":
; u'{}'.format(s)
u'\xd0\xb9'
; u'{}'.format(u)
u'\u0439'
and it will work with a Unicode argument fine only if the original string was Unicode.
; '{}'.format(u'i')
'i'
or if argument string can be converted to a string (so called 'byte array')
Tell the option element to be 13pt
select option{
font-size: 13pt;
}
and then the first option element to be 7pt
select option:first-child {
font-size: 7pt;
}
Running demo: http://jsfiddle.net/VggvD/1/
Use something like this
$.getJSON("../../data/file.json", function(json) {
console.log(json); // this will show the info in firebug console
alert(json);
});
Yes, and no. There are min and max attributes in HTML 5, but
The max attribute will not work for dates and time in Internet Explorer 10+ or Firefox, since IE 10+ and Firefox does not support these input types.
EDIT: Firefox now does support it
So if you are confused by the documentation of that attributes, yet it doesn't work, that's why.
See the W3 page for the versions.
I find it easiest to use Javascript, s the other answers say, since you can just use a pre-made module. Also, many Javascript date picker libraries have a min/max setting and have that nice calendar look.
Thanks for the suggestions in the comments. I made a bit of a dirty hack to get what I want without having to create my own image. With javascript I first hide the default tag that's being used for the down arrow, like so:
$('b[role="presentation"]').hide();
I then included font-awesome in my page and add my own down arrow, again with a line of javascript, to replace the default one:
$('.select2-arrow').append('<i class="fa fa-angle-down"></i>');
Then with CSS I style the select boxes. I set the height, change the background color of the arrow area to a gradient black, change the width, font-size and also the color of the down arrow to white:
.select2-container .select2-choice {
padding: 5px 10px;
height: 40px;
width: 132px;
font-size: 1.2em;
}
.select2-container .select2-choice .select2-arrow {
background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
background-image: -moz-linear-gradient(top, #424242, #030303);
background-image: -ms-linear-gradient(top, #424242, #030303);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
background-image: -webkit-linear-gradient(top, #424242, #030303);
background-image: -o-linear-gradient(top, #424242, #030303);
background-image: linear-gradient(#424242, #030303);
width: 40px;
color: #fff;
font-size: 1.3em;
padding: 4px 12px;
}
The result is the styling the way I want it:
Update 5/6/2015 As @Katie Lacy mentioned in the other answer the classnames have been changed in version 4 of Select2. The updated CSS with the new classnames should look like this:
.select2-container--default .select2-selection--single{
padding:6px;
height: 37px;
width: 148px;
font-size: 1.2em;
position: relative;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
background-image: -moz-linear-gradient(top, #424242, #030303);
background-image: -ms-linear-gradient(top, #424242, #030303);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
background-image: -webkit-linear-gradient(top, #424242, #030303);
background-image: -o-linear-gradient(top, #424242, #030303);
background-image: linear-gradient(#424242, #030303);
width: 40px;
color: #fff;
font-size: 1.3em;
padding: 4px 12px;
height: 27px;
position: absolute;
top: 0px;
right: 0px;
width: 20px;
}
JS:
$('b[role="presentation"]').hide();
$('.select2-selection__arrow').append('<i class="fa fa-angle-down"></i>');
Find the custom validator for min number validation. The selector name of our directive is customMin.
custom-min-validator.directive.ts
import { Directive, Input } from '@angular/core';
import { NG_VALIDATORS, Validator, FormControl } from '@angular/forms';
@Directive({
selector: '[customMin][formControlName],[customMin][formControl],[customMin][ngModel]',
providers: [{provide: NG_VALIDATORS, useExisting: CustomMinDirective, multi: true}]
})
export class CustomMinDirective implements Validator {
@Input()
customMin: number;
validate(c: FormControl): {[key: string]: any} {
let v = c.value;
return ( v < this.customMin)? {"customMin": true} : null;
}
}
Find the custom validator for max number validation. The selector name of our directive is customMax.
custom-max-validator.directive.ts
import { Directive, Input } from '@angular/core';
import { NG_VALIDATORS, Validator, FormControl } from '@angular/forms';
@Directive({
selector: '[customMax][formControlName],[customMax][formControl],[customMax][ngModel]',
providers: [{provide: NG_VALIDATORS, useExisting: CustomMaxDirective, multi: true}]
})
export class CustomMaxDirective implements Validator {
@Input()
customMax: number;
validate(c: FormControl): {[key: string]: any} {
let v = c.value;
return ( v > this.customMax)? {"customMax": true} : null;
}
}
We can use customMax with formControlName, formControl and ngModel attributes.
Using Custom Min and Max Validator in Template-driven Form
We will use our custom min and max validator in template-driven form. For min number validation we have customMin attribute and for max number validation we have customMax attribute. Now find the code snippet for validation.
<input name="num1" [ngModel]="user.num1" customMin="15" #numberOne="ngModel">
<input name="num2" [ngModel]="user.num2" customMax="50" #numberTwo="ngModel">
We can show validation error messages as following.
<div *ngIf="numberOne.errors?.customMin">
Minimum required number is 15.
</div>
<div *ngIf="numberTwo.errors?.customMax">
Maximum number can be 50.
</div>
To assign min and max number we can also use property biding. Suppose we have following component properties.
minNum = 15;
maxNum = 50;
Now use property binding for customMin and customMax as following.
<input name="num1" [ngModel]="user.num1" [customMin]="minNum" #numberOne="ngModel">
<input name="num2" [ngModel]="user.num2" [customMax]="maxNum" #numberTwo="ngModel">
A fast approach is to use the following according to ie that you want to focus (check the comments), inside your css files (where margin-top, set whatever css attribute you like):
margin-top: 10px\9; /*It will apply to all ie from 8 and below */
*margin-top: 10px; /*It will apply to ie 7 and below */
_margin-top: 10px; /*It will apply to ie 6 and below*/
A better approach would be to check user agent or a conditional if, in order to avoid the loading of unnecessary CSS in other browsers.
A sample way to get the date and time in this format "2018 Nov 01 16:18:22" use this
DateFormat dateFormat = new SimpleDateFormat("yyyy MMM dd HH:mm:ss");
Date date = new Date();
dateFormat.format(date);
You can remove webdav module manually from GUI for the particular in IIS.
1) Goto the IIs.
2) Goto the respective site.
3) Open "Handler Mappings"
4) Scroll downn and select WebDav module. Right click on it and delete it.
Note: this will also update your web.config of the web app.
There's an easier way, by extending an empty LatLngBounds
rather than creating one explicitly from two points. (See this question for more details)
Should look something like this, added to your code:
//create empty LatLngBounds object
var bounds = new google.maps.LatLngBounds();
var infowindow = new google.maps.InfoWindow();
for (i = 0; i < locations.length; i++) {
var marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map
});
//extend the bounds to include each marker's position
bounds.extend(marker.position);
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
}
//now fit the map to the newly inclusive bounds
map.fitBounds(bounds);
//(optional) restore the zoom level after the map is done scaling
var listener = google.maps.event.addListener(map, "idle", function () {
map.setZoom(3);
google.maps.event.removeListener(listener);
});
This way, you can use an arbitrary number of points, and don't need to know the order beforehand.
Demo jsFiddle here: http://jsfiddle.net/x5R63/
You can just use a sequence of x/10.0f and std::floor operations to have "math approach". Or you can also use boost::lexical_cast(the_number) to obtain a string and then you can simply do the_string.c_str()[i] to access the individual characters (the "string approach").
You can split string to the words and check the result list.
if word in string.split():
print 'success'
On Windows, you can also use the Win32 File Namespace prefixed with \\?\
to refer to your local directories:
\\?\C:\my_dir
this.setState({abc: {xyz: 'new value'}});
will NOT work, as state.abc
will be entirely overwritten, not merged.
This works for me:
this.setState((previousState) => {
previousState.abc.xyz = 'blurg';
return previousState;
});
Unless I'm reading the docs wrong, Facebook recommends the above format. https://facebook.github.io/react/docs/component-api.html
Additionally, I guess the most direct way without mutating state is to directly copy by using the ES6 spread/rest operator:
const newState = { ...this.state.abc }; // deconstruct state.abc into a new object-- effectively making a copy
newState.xyz = 'blurg';
this.setState(newState);
Wget 404 error also always happens if you want to download the pages from Wordpress-website by typing
wget -r http://somewebsite.com
If this website is built using Wordpress you'll get such an error:
ERROR 404: Not Found.
There's no way to mirror Wordpress-website because the website content is stored in the database and wget is not able to grab .php files. That's why you get Wget 404 error.
I know it's not this question's case, because Sam only wants to download a single picture, but it can be helpful for others.
This will Help to Keep a fixed length when you want to print several elements at one print statement
25s format a string with 25 spaces, left justified by default
5d format an integer reserving 5 spaces, right justified by default
members=["Niroshan","Brayan","Kate"]
print("__________________________________________________________________")
print('{:25s} {:32s} {:35s} '.format("Name","Country","Age"))
print("__________________________________________________________________")
print('{:25s} {:30s} {:5d} '.format(members[0],"Srilanka",20))
print('{:25s} {:30s} {:5d} '.format(members[1],"Australia",25))
print('{:25s} {:30s} {:5d} '.format(members[2],"England",30))
print("__________________________________________________________________")
25s format a string with 25 spaces, left justified by default
5d format an integer reserving 5 spaces, right justified by default
And this will print
__________________________________________________________________
Name Country Age
__________________________________________________________________
Niroshan Srilanka 20
Brayan Australia 25
Kate England 30
__________________________________________________________________
This will wait until your link has appeared, and then you can click it.
Command: waitForElementPresent
Target: link=do something
Value:
Swift 3, and now Swift 4, have replaced many "stringly-typed" APIs with struct
"wrapper types", as is the case with NotificationCenter. Notifications are now identified by a struct Notfication.Name
rather than by String
. For more details see the now legacy Migrating to Swift 3 guide
Swift 2.2 usage:
// Define identifier
let notificationIdentifier: String = "NotificationIdentifier"
// Register to receive notification
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(YourClassName.methodOfReceivedNotification(_:)), name: notificationIdentifier, object: nil)
// Post a notification
NSNotificationCenter.defaultCenter().postNotificationName(notificationIdentifier, object: nil)
Swift 3 & 4 usage:
// Define identifier
let notificationName = Notification.Name("NotificationIdentifier")
// Register to receive notification
NotificationCenter.default.addObserver(self, selector: #selector(YourClassName.methodOfReceivedNotification), name: notificationName, object: nil)
// Post notification
NotificationCenter.default.post(name: notificationName, object: nil)
// Stop listening notification
NotificationCenter.default.removeObserver(self, name: notificationName, object: nil)
All of the system notification types are now defined as static constants on Notification.Name
; i.e. .UIApplicationDidFinishLaunching
, .UITextFieldTextDidChange
, etc.
You can extend Notification.Name
with your own custom notifications in order to stay consistent with the system notifications:
// Definition:
extension Notification.Name {
static let yourCustomNotificationName = Notification.Name("yourCustomNotificationName")
}
// Usage:
NotificationCenter.default.post(name: .yourCustomNotificationName, object: nil)
Swift 4.2 usage:
Same as Swift 4, except now system notifications names are part of UIApplication. So in order to stay consistent with the system notifications you can extend UIApplication
with your own custom notifications instead of Notification.Name :
// Definition:
UIApplication {
public static let yourCustomNotificationName = Notification.Name("yourCustomNotificationName")
}
// Usage:
NotificationCenter.default.post(name: UIApplication.yourCustomNotificationName, object: nil)
a = [1,2,3,4,5,1,2,3,4,5,1,12]
for i in range (len(a)):
if a[i]==2:
a[i]=123
You can use a for and or while loop; however if u know the builtin Enumerate function, then it is recommended to use Enumerate.1
From the manual:
If the database server successfully prepares the statement, PDO::prepare() returns a PDOStatement object. If the database server cannot successfully prepare the statement, PDO::prepare() returns FALSE or emits PDOException (depending on error handling).
The prepare statement likely caused an error because the db would be unable to prepare the statement. Try testing for an error immediately after you prepare your query and before you execute it.
$qry = '
INSERT INTO non-existant-table (id, score)
SELECT id, 40
FROM another-non-existant-table
WHERE description LIKE "%:search_string%"
AND available = "yes"
ON DUPLICATE KEY UPDATE score = score + 40
';
$sth = $this->pdo->prepare($qry);
print_r($this->pdo->errorInfo());
newVal exists in the entire scope of the switch but is only initialised if the VAL limb is hit. If you create a block around the code in VAL it should be OK.
MSDN seems to indicate that the Cxxx casts for specific types can improve performance in VB .NET because they are converted to inline code. For some reason, it also suggests DirectCast as opposed to CType in certain cases (the documentations states it's when there's an inheritance relationship; I believe this means the sanity of the cast is checked at compile time and optimizations can be applied whereas CType always uses the VB runtime.)
When I'm writing VB .NET code, what I use depends on what I'm doing. If it's prototype code I'm going to throw away, I use whatever I happen to type. If it's code I'm serious about, I try to use a Cxxx cast. If one doesn't exist, I use DirectCast if I have a reasonable belief that there's an inheritance relationship. If it's a situation where I have no idea if the cast should succeed (user input -> integers, for example), then I use TryCast so as to do something more friendly than toss an exception at the user.
One thing I can't shake is I tend to use ToString instead of CStr but supposedly Cstr is faster.
I found that I needed to group by the month and year so neither of the above worked for me. Instead I used date_format
SELECT date
FROM blog
GROUP BY DATE_FORMAT(date, "%m-%y")
ORDER BY YEAR(date) DESC, MONTH(date) DESC
i refer so many results and modified my code its working
foreach (var rate in rateing)
{
sum += Convert.ToInt32(rate.Rate);
}
if(rateing.Count()!= 0)
{
float avg = (float)sum / (float)rateing.Count();
saloonusers.Rate = avg;
}
else
{
saloonusers.Rate = (float)0.0;
}
If you need to have all words starting with a capital letter, you can use the following function:
const capitalLetters = (s) => {
return s.trim().split(" ").map(i => i[0].toUpperCase() + i.substr(1)).reduce((ac, i) => `${ac} ${i}`);
}
Example:
console.log(`result: ${capitalLetters("this is a test")}`)
// Result: "This Is A Test"
If logical test is against a single column then you could use something like
USE AdventureWorks2012;
GO
SELECT ProductNumber, Category =
CASE ProductLine
WHEN 'R' THEN 'Road'
WHEN 'M' THEN 'Mountain'
WHEN 'T' THEN 'Touring'
WHEN 'S' THEN 'Other sale items'
ELSE 'Not for sale'
END,
Name
FROM Production.Product
ORDER BY ProductNumber;
GO
More information - https://docs.microsoft.com/en-us/sql/t-sql/language-elements/case-transact-sql?view=sql-server-2017
On Linux it's easy to convert ^M (ctrl-M) to *nix newlines (^J) with sed.
It will something like this on the CLI, there will actually be a line break in the text. However, the \ passes that ^J along to sed:
sed 's/^M/\
/g' < ffmpeg.log > new.log
You get this by using ^V (ctrl-V), ^M (ctrl-M) and \ (backslash) as you type:
sed 's/^V^M/\^V^J/g' < ffmpeg.log > new.log
I know I am quite late to answer this but I have come up with a different answer:
val rdd = sc.textFile("/home/training/mydata/file.txt")
val text = rdd.map(lines=lines.split(",")).map(arrays=>(ararys(0),arrays(1))).toDF("id","name").show
This is what you can do to source an .env (and .flaskenv) file in the pycharm flask/django console. It would also work for a normal python console of course.
Do pip install python-dotenv
in your environment (the same as being pointed to by pycharm).
Go to: Settings > Build ,Execution, Deployment > Console > Flask/django Console
In "starting script" include something like this near the top:
from dotenv import load_dotenv load_dotenv(verbose=True)
The .env file can look like this:
export KEY=VALUE
It doesn't matter if one includes export
or not for dotenv to read it.
As an alternative you could also source the .env file in the activate shell script for the respective virtual environement.
There is no float: center; in css. Use margin: 0 auto; instead. So like this:
.mydivclass {
margin: 0 auto;
}
There is a small problem missed in top-voted answers. Namely, character array may contain 0. If we will use constructor with single parameter as pointed above we will lose some data. The possible solution is:
cout << string("123\0 123") << endl;
cout << string("123\0 123", 8) << endl;
Output is:
123
123 123