Try:
float x = (float)rand()/(float)(RAND_MAX/a);
To understand how this works consider the following.
N = a random value in [0..RAND_MAX] inclusively.
The above equation (removing the casts for clarity) becomes:
N/(RAND_MAX/a)
But division by a fraction is the equivalent to multiplying by said fraction's reciprocal, so this is equivalent to:
N * (a/RAND_MAX)
which can be rewritten as:
a * (N/RAND_MAX)
Considering N/RAND_MAX
is always a floating point value between 0.0 and 1.0, this will generate a value between 0.0 and a
.
Alternatively, you can use the following, which effectively does the breakdown I showed above. I actually prefer this simply because it is clearer what is actually going on (to me, anyway):
float x = ((float)rand()/(float)(RAND_MAX)) * a;
Note: the floating point representation of a
must be exact or this will never hit your absolute edge case of a
(it will get close). See this article for the gritty details about why.
Sample
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc, char *argv[])
{
srand((unsigned int)time(NULL));
float a = 5.0;
for (int i=0;i<20;i++)
printf("%f\n", ((float)rand()/(float)(RAND_MAX)) * a);
return 0;
}
Output
1.625741
3.832026
4.853078
0.687247
0.568085
2.810053
3.561830
3.674827
2.814782
3.047727
3.154944
0.141873
4.464814
0.124696
0.766487
2.349450
2.201889
2.148071
2.624953
2.578719
January 6th, 2021
This is what worked for me.
Go to File -> Project Structure and select the "Dependencies" tab on the right panel of the window. Then change the "Module SDK" using the drop-down like this. Then apply changes.
Both would return true on Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from creating a directory name 'foo'.
Try this one. Just get the list of latest post dates from each author. Thats it
SELECT wp_posts.* FROM wp_posts WHERE wp_posts.post_status='publish'
AND wp_posts.post_type='post' AND wp_posts.post_date IN(SELECT MAX(wp_posts.post_date) FROM wp_posts GROUP BY wp_posts.post_author)
It's my solution to save local data to txt file.
function export2txt() {_x000D_
const originalData = {_x000D_
members: [{_x000D_
name: "cliff",_x000D_
age: "34"_x000D_
},_x000D_
{_x000D_
name: "ted",_x000D_
age: "42"_x000D_
},_x000D_
{_x000D_
name: "bob",_x000D_
age: "12"_x000D_
}_x000D_
]_x000D_
};_x000D_
_x000D_
const a = document.createElement("a");_x000D_
a.href = URL.createObjectURL(new Blob([JSON.stringify(originalData, null, 2)], {_x000D_
type: "text/plain"_x000D_
}));_x000D_
a.setAttribute("download", "data.txt");_x000D_
document.body.appendChild(a);_x000D_
a.click();_x000D_
document.body.removeChild(a);_x000D_
}
_x000D_
<button onclick="export2txt()">Export data to local txt file</button>
_x000D_
Modules Preconditions:
The IIS core engine uses preconditions to determine when to enable a particular module. Performance reasons, for example, might determine that you only want to execute managed modules for requests that also go to a managed handler. The precondition in the following example (
precondition="managedHandler"
) only enables the forms authentication module for requests that are also handled by a managed handler, such as requests to .aspx or .asmx files:<add name="FormsAuthentication" type="System.Web.Security.FormsAuthenticationModule" preCondition="managedHandler" />
If you remove the attribute
precondition="managedHandler"
, Forms Authentication also applies to content that is not served by managed handlers, such as .html, .jpg, .doc, but also for classic ASP (.asp) or PHP (.php) extensions. See "How to Take Advantage of IIS Integrated Pipeline" for an example of enabling ASP.NET modules to run for all content.You can also use a shortcut to enable all managed (ASP.NET) modules to run for all requests in your application, regardless of the "
managedHandler
" precondition.To enable all managed modules to run for all requests without configuring each module entry to remove the "
managedHandler
" precondition, use therunAllManagedModulesForAllRequests
property in the<modules>
section:<modules runAllManagedModulesForAllRequests="true" />
When you use this property, the "
managedHandler
" precondition has no effect and all managed modules run for all requests.
Copied from IIS Modules Overview: Preconditions
For StaggeredGridLayoutManager
do this:
RecyclerView rv = findViewById(...);
StaggeredGridLayoutManager lm = new StaggeredGridLayoutManager(...);
rv.setLayoutManager(lm);
And to get visible item views:
int[] viewsIds = lm.findFirstCompletelyVisibleItemPositions(null);
ViewHolder firstViewHolder = rvPlantios.findViewHolderForLayoutPosition(viewsIds[0]);
View itemView = viewHolder.itemView;
Remember to check if it is empty.
In a relational database system, a one-to-many
table relationship looks as follows:
Note that the relationship is based on the Foreign Key column (e.g., post_id
) in the child table.
So, there is a single source of truth when it comes to managing a one-to-many
table relationship.
Now, if you take a bidirectional entity relationship that maps on the one-to-many
table relationship we saw previously:
If you take a look at the diagram above, you can see that there are two ways to manage this relationship.
In the Post
entity, you have the comments
collection:
@OneToMany(
mappedBy = "post",
cascade = CascadeType.ALL,
orphanRemoval = true
)
private List<PostComment> comments = new ArrayList<>();
And, in the PostComment
, the post
association is mapped as follows:
@ManyToOne(
fetch = FetchType.LAZY
)
@JoinColumn(name = "post_id")
private Post post;
Because there are two ways to represent the Foreign Key column, you must define which is the source of truth when it comes to translating the association state change into its equivalent Foreign Key column value modification.
The mappedBy
attribute tells that the @ManyToOne
side is in charge of managing the Foreign Key column, and the collection is used only to fetch the child entities and to cascade parent entity state changes to children (e.g., removing the parent should also remove the child entities).
Now, even if you defined the mappedBy
attribute and the child-side @ManyToOne
association manages the Foreign Key column, you still need to synchronize both sides of the bidirectional association.
The best way to do that is to add these two utility methods:
public void addComment(PostComment comment) {
comments.add(comment);
comment.setPost(this);
}
public void removeComment(PostComment comment) {
comments.remove(comment);
comment.setPost(null);
}
The addComment
and removeComment
methods ensure that both sides are synchronized. So, if we add a child entity, the child entity needs to point to the parent and the parent entity should have the child contained in the child collection.
This is all you need.
rsync -e ssh file host:/directory/.
In addition to reg.exe, I highly recommend that you also check out powershell, its vastly more capable in its registry handling.
You can try wx library. It's a cross platform UI library. Here you can find the printing tutorial: https://web.archive.org/web/20160619163747/http://wiki.wxpython.org/Printing
The problem is that your ui
property uses a forward declaration of class Ui::MainWindowClass
, hence the "incomplete type" error.
Including the header file in which this class is declared will fix the problem.
EDIT
Based on your comment, the following code:
namespace Ui
{
class MainWindowClass;
}
does NOT declare a class. It's a forward declaration, meaning that the class will exist at some point, at link time.
Basically, it just tells the compiler that the type will exist, and that it shouldn't warn about it.
But the class has to be defined somewhere.
Note this can only work if you have a pointer to such a type.
You can't have a statically allocated instance of an incomplete type.
So either you actually want an incomplete type, and then you should declare your ui
member as a pointer:
namespace Ui
{
// Forward declaration - Class will have to exist at link time
class MainWindowClass;
}
class MainWindow : public QMainWindow
{
private:
// Member needs to be a pointer, as it's an incomplete type
Ui::MainWindowClass * ui;
};
Or you want a statically allocated instance of Ui::MainWindowClass
, and then it needs to be declared.
You can do it in another header file (usually, there's one header file per class).
But simply changing the code to:
namespace Ui
{
// Real class declaration - May/Should be in a specific header file
class MainWindowClass
{};
}
class MainWindow : public QMainWindow
{
private:
// Member can be statically allocated, as the type is complete
Ui::MainWindowClass ui;
};
will also work.
Note the difference between the two declarations. First uses a forward declaration, while the second one actually declares the class (here with no properties nor methods).
I had a similar issue when I switched from IntellijIDEA to Eclipse. It can be done in the following steps. Go to Window > Preferences > Java > Editor > Content Assist and type ._abcdefghijklmnopqrstuvwxyzS in the Auto activation triggers for Java field
These are what's known as Shadow Copy Folders.
Simplistically....and I really mean it:
When ASP.NET runs your app for the first time, it copies any assemblies found in the /bin folder, copies any source code files (found for example in the App_Code folder) and parses your aspx, ascx files to c# source files. ASP.NET then builds/compiles all this code into a runnable application.
One advantage of doing this is that it prevents the possibility of .NET assembly DLL's #(in the /bin folder) becoming locked by the ASP.NET worker process and thus not updatable.
ASP.NET watches for file changes in your website and will if necessary begin the whole process all over again.
Theoretically the folder shouldn't need any maintenance, but from time to time, and only very rarely you may need to delete contents. That said, I work for a hosting company, we run up to 1200 sites per shared server and I haven't had to touch this folder on any of the 250 or so machines for years.
This is outlined in the MSDN article Understanding ASP.NET Dynamic Compilation
I have got the same error after removing eclipse
and installing it again.
Deleting the .metadata
directory and running eclipse -clean
does not work for me, but the following works for me:
sudo cp /usr/lib/jni/libswt-*3740.so ~/.swt/lib/linux/x86_64/
if you have a 32 bits based system do:
sudo cp /usr/lib/jni/libswt-*3740.so ~/.swt/lib/linux/x86/
This one really sucked.
I tried all of the solutions suggested here but the only thing that worked was to
ALTER TABLE old_db.{table_name} RENAME new_db.{table_name}
on all of the functioning tablesDROP old_db
old_db
againALTER TABLE new_db.{table_name} RENAME old_db.{table_name}
on all the tables in new_db
Once you have done that you can finally just create the table again that you previously had.
Git is supposed to understand what files already exist on the server, unless you somehow made a huge difference to your tree and the new changes need to be sent.
To create a new branch with a copy of your current state
git checkout -b new_branch #< create a new local branch with a copy of your code
git push origin new_branch #< pushes to the server
Can you please describe the steps you did to understand what might have made your repository need to send that much to the server.
Staying MVVM, I think using either Behaviors from the Blend SDK (System.Windows.Interactivity) or a custom interaction request from Prism could work really well for this sort of situation.
If going the Behavior route, here's the general idea:
public class CloseWindowBehavior : Behavior<Window>
{
public bool CloseTrigger
{
get { return (bool)GetValue(CloseTriggerProperty); }
set { SetValue(CloseTriggerProperty, value); }
}
public static readonly DependencyProperty CloseTriggerProperty =
DependencyProperty.Register("CloseTrigger", typeof(bool), typeof(CloseWindowBehavior), new PropertyMetadata(false, OnCloseTriggerChanged));
private static void OnCloseTriggerChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var behavior = d as CloseWindowBehavior;
if (behavior != null)
{
behavior.OnCloseTriggerChanged();
}
}
private void OnCloseTriggerChanged()
{
// when closetrigger is true, close the window
if (this.CloseTrigger)
{
this.AssociatedObject.Close();
}
}
}
Then in your window, you would just bind the CloseTrigger to a boolean value that would be set when you wanted the window to close.
<Window x:Class="TestApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:local="clr-namespace:TestApp"
Title="MainWindow" Height="350" Width="525">
<i:Interaction.Behaviors>
<local:CloseWindowBehavior CloseTrigger="{Binding CloseTrigger}" />
</i:Interaction.Behaviors>
<Grid>
</Grid>
</Window>
Finally, your DataContext/ViewModel would have a property that you'd set when you wanted the window to close like this:
public class MainWindowViewModel : INotifyPropertyChanged
{
private bool closeTrigger;
/// <summary>
/// Gets or Sets if the main window should be closed
/// </summary>
public bool CloseTrigger
{
get { return this.closeTrigger; }
set
{
this.closeTrigger = value;
RaisePropertyChanged(nameof(CloseTrigger));
}
}
public MainWindowViewModel()
{
// just setting for example, close the window
CloseTrigger = true;
}
protected void RaisePropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public event PropertyChangedEventHandler PropertyChanged;
}
(set your Window.DataContext = new MainWindowViewModel())
Here's a shell script I made for myself:
#! /bin/sh
for device in `adb devices | awk '{print $1}'`; do
if [ ! "$device" = "" ] && [ ! "$device" = "List" ]
then
echo " "
echo "adb -s $device $@"
echo "------------------------------------------------------"
adb -s $device $@
fi
done
This is the right way to clear this error.
export ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1 sqlplus / as sysdba
There's a method that does this for you:
def show
@city = @user.city.present?
end
The present?
method tests for not-nil
plus has content. Empty strings, strings consisting of spaces or tabs, are considered not present.
Since this pattern is so common there's even a shortcut in ActiveRecord:
def show
@city = @user.city?
end
This is roughly equivalent.
As a note, testing vs nil
is almost always redundant. There are only two logically false values in Ruby: nil
and false
. Unless it's possible for a variable to be literal false
, this would be sufficient:
if (variable)
# ...
end
This is preferable to the usual if (!variable.nil?)
or if (variable != nil)
stuff that shows up occasionally. Ruby tends to wards a more reductionist type of expression.
One reason you'd want to compare vs. nil
is if you have a tri-state variable that can be true
, false
or nil
and you need to distinguish between the last two states.
The source code for BufferedReader shows that the underlying is closed when you close the BufferedReader.
FYI this kind of code works (you can find it ugly, it is your right :) ) :
def list = null
list.each { println it }
soSomething()
In other words, this code has null/empty checks both useless:
if (members && !members.empty) {
members.each { doAnotherThing it }
}
def doAnotherThing(def member) {
// Some work
}
1st option
select *
into ABC_1
from ABC;
2nd option: use SSIS, that is right click on database in object explorer > all tasks > export data
The most efficient selector you can use is an attribute selector.
input[name="btnPage"]:hover {/*your css here*/}
Here's a live demo: http://tinkerbin.com/3G6B93Cb
I had the same issue on my windows 10. This is what fixed my problem
bower_components
in your root folder.bowerrc
file in the root{"directory" : "public/bower_components"}
bower install
You should see bower_components folder in your public folder now
Turn the axes off with:
plt.axis('off')
And gridlines with:
plt.grid(b=None)
It is, but requires a CSS2 capable browser (all major browsers, IE8+).
.OwnerJoe:before {
content: "Joe's Task:";
}
But I would rather recommend using Javascript for this. With jQuery:
$('.OwnerJoe').each(function() {
$(this).before($('<span>').text("Joe's Task: "));
});
Conditionally load latest/legacy jQuery version and fallback:
<!--[if lt IE 9]>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="/public/vendor/jquery-legacy/dist/jquery.min.js">\x3C/script>')</script>
<![endif]-->
<!--[if gte IE 9]><!-->
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="/public/vendor/jquery/dist/jquery.min.js">\x3C/script>')</script>
<!--<![endif]-->
It would seem like your user doesn't have permission to write to that directory on the server. Please make sure that the permissions are correct. The user will need write permissions on that directory.
Using the hyperref
package, you could also declare a new command by using \newcommand{\secref}[1]{\autoref{#1}. \nameref{#1}}
in the pre-amble. Placing \secref{section:my}
in the text generates: 1. My section.
// Another way, that does not rearrange the original Array
// and spends a little less time handling duplicates.
function uniqueSort(arr, sortby){
var A1= arr.slice();
A1= typeof sortby== 'function'? A1.sort(sortby): A1.sort();
var last= A1.shift(), next, A2= [last];
while(A1.length){
next= A1.shift();
while(next=== last) next= A1.shift();
if(next!=undefined){
A2[A2.length]= next;
last= next;
}
}
return A2;
}
var myData= ['237','124','255','124','366','255','100','1000'];
uniqueSort(myData,function(a,b){return a-b})
// the ordinary sort() returns the same array as the number sort here,
// but some strings of digits do not sort so nicely numerical.
During compilation with g++
via make
define LIBRARY_PATH
if it may not be appropriate to change the Makefile with the -L
option. I had put my extra library in /opt/lib
so I did:
$ export LIBRARY_PATH=/opt/lib/
and then ran make
for successful compilation and linking.
To run the program with a shared library define:
$ export LD_LIBRARY_PATH=/opt/lib/
before executing the program.
If you use action.BeginInvoke(), you have to call EndInvoke somewhere - else the framework has to hold the result of the async call on the heap, resulting in a memory leak.
If you don't want to jump to C# 5 with the async/await keywords, you can just use the Task Parallels library in .Net 4. It's much, much nicer than using BeginInvoke/EndInvoke, and gives a clean way to fire-and-forget for async jobs:
using System.Threading.Tasks;
...
void Foo(){}
...
new Task(Foo).Start();
If you have methods to call that take parameters, you can use a lambda to simplify the call without having to create delegates:
void Foo2(int x, string y)
{
return;
}
...
new Task(() => { Foo2(42, "life, the universe, and everything");}).Start();
I'm pretty sure (but admittedly not positive) that the C# 5 async/await syntax is just syntactic sugar around the Task library.
You don't have to handcode this. The problem definition is precisely the behavior of Apache Commons CollectionUtils#collate. It's also overloaded for different sort orders and allowing duplicates.
pointer-events: none;
Is a CSS property that makes events "pass through" the element to which it is applied and makes the event occur on the element "below".
See for details: https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events
It is not supported up to IE 11; all other vendors support it since quite some time (global support was ~92% in 12/'16): http://caniuse.com/#feat=pointer-events (thanks to @s4y for providing the link in the comments).
An alternative method is to use a Grid with one column and n rows. Set all the rows heights to Auto
, and the bottom-most row height to 1*
.
I prefer this method because I've found Grids have better layout performance than DockPanels, StackPanels, and WrapPanels. But unless you're using them in an ItemTemplate (where the layout is being performed for a large number of items), you'll probably never notice.
Here’s the JavaScript equivalent:
var i = null;
var j = i || 10; //j is now 10
Note that the logical operator ||
does not return a boolean value but the first value that can be converted to true.
Additionally use an array of objects instead of one single object:
var options = {
filters: [
{
name: 'firstName',
value: 'abc'
}
]
};
var filter = options.filters[0] || ''; // is {name:'firstName', value:'abc'}
var filter2 = options.filters[1] || ''; // is ''
That can be accessed by index.
Try:
#include <typeinfo>
// …
std::cout << typeid(a).name() << '\n';
You might have to activate RTTI in your compiler options for this to work. Additionally, the output of this depends on the compiler. It might be a raw type name or a name mangling symbol or anything in between.
Probably the simplest way is using subplot2grid
, described in Customizing Location of Subplot Using GridSpec.
ax = plt.subplot2grid((2, 2), (0, 0))
is equal to
import matplotlib.gridspec as gridspec
gs = gridspec.GridSpec(2, 2)
ax = plt.subplot(gs[0, 0])
so bmu's example becomes:
import numpy as np
import matplotlib.pyplot as plt
# generate some data
x = np.arange(0, 10, 0.2)
y = np.sin(x)
# plot it
fig = plt.figure(figsize=(8, 6))
ax0 = plt.subplot2grid((1, 3), (0, 0), colspan=2)
ax0.plot(x, y)
ax1 = plt.subplot2grid((1, 3), (0, 2))
ax1.plot(y, x)
plt.tight_layout()
plt.savefig('grid_figure.pdf')
You can use function colSums()
to calculate sum of all values. [,-1]
ensures that first column with names of people is excluded.
colSums(people[,-1])
Height Weight
199 425
Assuming there could be multiple columns that are not numeric, or that your column order is not fixed, a more general approach would be:
colSums(Filter(is.numeric, people))
If you created virtual environment using root then use this command
sudo su
it will give you the root access and then activate your virtual environment using this
source /root/.env/ENV_NAME/bin/activate
If you want to clear the div and remove all child nodes, you could put:
var mydiv = document.getElementById('FirstDiv');
while(mydiv.firstChild) {
mydiv.removeChild(mydiv.firstChild);
}
You have four main options for converting types in pandas:
to_numeric()
- provides functionality to safely convert non-numeric types (e.g. strings) to a suitable numeric type. (See also to_datetime()
and to_timedelta()
.)
astype()
- convert (almost) any type to (almost) any other type (even if it's not necessarily sensible to do so). Also allows you to convert to categorial types (very useful).
infer_objects()
- a utility method to convert object columns holding Python objects to a pandas type if possible.
convert_dtypes()
- convert DataFrame columns to the "best possible" dtype that supports pd.NA
(pandas' object to indicate a missing value).
Read on for more detailed explanations and usage of each of these methods.
to_numeric()
The best way to convert one or more columns of a DataFrame to numeric values is to use pandas.to_numeric()
.
This function will try to change non-numeric objects (such as strings) into integers or floating point numbers as appropriate.
The input to to_numeric()
is a Series or a single column of a DataFrame.
>>> s = pd.Series(["8", 6, "7.5", 3, "0.9"]) # mixed string and numeric values
>>> s
0 8
1 6
2 7.5
3 3
4 0.9
dtype: object
>>> pd.to_numeric(s) # convert everything to float values
0 8.0
1 6.0
2 7.5
3 3.0
4 0.9
dtype: float64
As you can see, a new Series is returned. Remember to assign this output to a variable or column name to continue using it:
# convert Series
my_series = pd.to_numeric(my_series)
# convert column "a" of a DataFrame
df["a"] = pd.to_numeric(df["a"])
You can also use it to convert multiple columns of a DataFrame via the apply()
method:
# convert all columns of DataFrame
df = df.apply(pd.to_numeric) # convert all columns of DataFrame
# convert just columns "a" and "b"
df[["a", "b"]] = df[["a", "b"]].apply(pd.to_numeric)
As long as your values can all be converted, that's probably all you need.
But what if some values can't be converted to a numeric type?
to_numeric()
also takes an errors
keyword argument that allows you to force non-numeric values to be NaN
, or simply ignore columns containing these values.
Here's an example using a Series of strings s
which has the object dtype:
>>> s = pd.Series(['1', '2', '4.7', 'pandas', '10'])
>>> s
0 1
1 2
2 4.7
3 pandas
4 10
dtype: object
The default behaviour is to raise if it can't convert a value. In this case, it can't cope with the string 'pandas':
>>> pd.to_numeric(s) # or pd.to_numeric(s, errors='raise')
ValueError: Unable to parse string
Rather than fail, we might want 'pandas' to be considered a missing/bad numeric value. We can coerce invalid values to NaN
as follows using the errors
keyword argument:
>>> pd.to_numeric(s, errors='coerce')
0 1.0
1 2.0
2 4.7
3 NaN
4 10.0
dtype: float64
The third option for errors
is just to ignore the operation if an invalid value is encountered:
>>> pd.to_numeric(s, errors='ignore')
# the original Series is returned untouched
This last option is particularly useful when you want to convert your entire DataFrame, but don't not know which of our columns can be converted reliably to a numeric type. In that case just write:
df.apply(pd.to_numeric, errors='ignore')
The function will be applied to each column of the DataFrame. Columns that can be converted to a numeric type will be converted, while columns that cannot (e.g. they contain non-digit strings or dates) will be left alone.
By default, conversion with to_numeric()
will give you either a int64
or float64
dtype (or whatever integer width is native to your platform).
That's usually what you want, but what if you wanted to save some memory and use a more compact dtype, like float32
, or int8
?
to_numeric()
gives you the option to downcast to either 'integer', 'signed', 'unsigned', 'float'. Here's an example for a simple series s
of integer type:
>>> s = pd.Series([1, 2, -7])
>>> s
0 1
1 2
2 -7
dtype: int64
Downcasting to 'integer' uses the smallest possible integer that can hold the values:
>>> pd.to_numeric(s, downcast='integer')
0 1
1 2
2 -7
dtype: int8
Downcasting to 'float' similarly picks a smaller than normal floating type:
>>> pd.to_numeric(s, downcast='float')
0 1.0
1 2.0
2 -7.0
dtype: float32
astype()
The astype()
method enables you to be explicit about the dtype you want your DataFrame or Series to have. It's very versatile in that you can try and go from one type to the any other.
Just pick a type: you can use a NumPy dtype (e.g. np.int16
), some Python types (e.g. bool), or pandas-specific types (like the categorical dtype).
Call the method on the object you want to convert and astype()
will try and convert it for you:
# convert all DataFrame columns to the int64 dtype
df = df.astype(int)
# convert column "a" to int64 dtype and "b" to complex type
df = df.astype({"a": int, "b": complex})
# convert Series to float16 type
s = s.astype(np.float16)
# convert Series to Python strings
s = s.astype(str)
# convert Series to categorical type - see docs for more details
s = s.astype('category')
Notice I said "try" - if astype()
does not know how to convert a value in the Series or DataFrame, it will raise an error. For example if you have a NaN
or inf
value you'll get an error trying to convert it to an integer.
As of pandas 0.20.0, this error can be suppressed by passing errors='ignore'
. Your original object will be return untouched.
astype()
is powerful, but it will sometimes convert values "incorrectly". For example:
>>> s = pd.Series([1, 2, -7])
>>> s
0 1
1 2
2 -7
dtype: int64
These are small integers, so how about converting to an unsigned 8-bit type to save memory?
>>> s.astype(np.uint8)
0 1
1 2
2 249
dtype: uint8
The conversion worked, but the -7 was wrapped round to become 249 (i.e. 28 - 7)!
Trying to downcast using pd.to_numeric(s, downcast='unsigned')
instead could help prevent this error.
infer_objects()
Version 0.21.0 of pandas introduced the method infer_objects()
for converting columns of a DataFrame that have an object datatype to a more specific type (soft conversions).
For example, here's a DataFrame with two columns of object type. One holds actual integers and the other holds strings representing integers:
>>> df = pd.DataFrame({'a': [7, 1, 5], 'b': ['3','2','1']}, dtype='object')
>>> df.dtypes
a object
b object
dtype: object
Using infer_objects()
, you can change the type of column 'a' to int64:
>>> df = df.infer_objects()
>>> df.dtypes
a int64
b object
dtype: object
Column 'b' has been left alone since its values were strings, not integers. If you wanted to try and force the conversion of both columns to an integer type, you could use df.astype(int)
instead.
convert_dtypes()
Version 1.0 and above includes a method convert_dtypes()
to convert Series and DataFrame columns to the best possible dtype that supports the pd.NA
missing value.
Here "best possible" means the type most suited to hold the values. For example, this a pandas integer type if all of the values are integers (or missing values): an object column of Python integer objects is converted to Int64
, a column of NumPy int32
values will become the pandas dtype Int32
.
With our object
DataFrame df
, we get the following result:
>>> df.convert_dtypes().dtypes
a Int64
b string
dtype: object
Since column 'a' held integer values, it was converted to the Int64
type (which is capable of holding missing values, unlike int64
).
Column 'b' contained string objects, so was changed to pandas' string
dtype.
By default, this method will infer the type from object values in each column. We can change this by passing infer_objects=False
:
>>> df.convert_dtypes(infer_objects=False).dtypes
a object
b string
dtype: object
Now column 'a' remained an object column: pandas knows it can be described as an 'integer' column (internally it ran infer_dtype
) but didn't infer exactly what dtype of integer it should have so did not convert it. Column 'b' was again converted to 'string' dtype as it was recognised as holding 'string' values.
object[,] valueArray = (object[,])excelRange.get_Value(XlRangeValueDataType.xlRangeValueDefault);
//Get the column names
for (int k = 0; k < valueArray.GetLength(1); )
{
//add columns to the data table.
dt.Columns.Add((string)valueArray[1,++k]);
}
//Load data into data table
object[] singleDValue = new object[valueArray.GetLength(1)];
//value array first row contains column names. so loop starts from 1 instead of 0
for (int i = 1; i < valueArray.GetLength(0); i++)
{
Console.WriteLine(valueArray.GetLength(0) + ":" + valueArray.GetLength(1));
for (int k = 0; k < valueArray.GetLength(1); )
{
singleDValue[k] = valueArray[i+1, ++k];
}
dt.LoadDataRow(singleDValue, System.Data.LoadOption.PreserveChanges);
}
There is a class, Class
, that can do this:
Class c = Class.forName("MyClass"); // if you want to specify a class
Class c = this.getClass(); // if you want to use the current class
System.out.println("Package: "+c.getPackage()+"\nClass: "+c.getSimpleName()+"\nFull Identifier: "+c.getName());
If c
represented the class MyClass
in the package mypackage
, the above code would print:
Package: mypackage
Class: MyClass
Full Identifier: mypackage.MyClass
You can take this information and modify it for whatever you need, or go check the API for more information.
You can also use the built-in sp_who2
stored procedure to get current blocked and blocking processes on a SQL Server instance. Typically you'd run this alongside a SQL Profiler instance to find a blocking process and look at the most recent command that spid issued in profiler.
Try the following snippet:
var mystring = 'this,is,an,example';
var splits = mystring.split(",");
alert(splits[0]); // output: this
Simplest way:
>>> from datetime import datetime
>>> dt = datetime(2008, 1, 1, 0, 0, 0, 0)
>>> dt.strftime("%s")
'1199163600'
Edit: @Daniel is correct, this would convert it to the machine's timezone. Here is a revised answer:
>>> from datetime import datetime, timezone
>>> epoch = datetime(1970, 1, 1, 0, 0, 0, 0, timezone.utc)
>>> dt = datetime(2008, 1, 1, 0, 0, 0, 0, timezone.utc)
>>> int((dt-epoch).total_seconds())
'1199145600'
In fact, its not even necessary to specify timezone.utc
, because the time difference is the same so long as both datetime
have the same timezone (or no timezone).
>>> from datetime import datetime
>>> epoch = datetime(1970, 1, 1, 0, 0, 0, 0)
>>> dt = datetime(2008, 1, 1, 0, 0, 0, 0)
>>> int((dt-epoch).total_seconds())
1199145600
Something like this might be the easiest way.
<a href="mailto:?subject=I wanted you to see this site&body=Check out this site http://www.website.com."
title="Share by Email">
<img src="http://png-2.findicons.com/files/icons/573/must_have/48/mail.png">
</a>
You could find another email image and add that if you wanted.
Mozilla Developer Network has a nice description and example of onbeforeunload.
If you want to warn the user before leaving the page if your page is dirty (i.e. if user has entered some data):
window.addEventListener('beforeunload', function(e) {
var myPageIsDirty = ...; //you implement this logic...
if(myPageIsDirty) {
//following two lines will cause the browser to ask the user if they
//want to leave. The text of this dialog is controlled by the browser.
e.preventDefault(); //per the standard
e.returnValue = ''; //required for Chrome
}
//else: user is allowed to leave without a warning dialog
});
They're still types, so I always use the same naming conventions I use for classes.
I definitely would frown on putting "Class" or "Enum" in a name. If you have both a FruitClass
and a FruitEnum
then something else is wrong and you need more descriptive names. I'm trying to think about the kind of code that would lead to needing both, and it seems like there should be a Fruit
base class with subtypes instead of an enum. (That's just my own speculation though, you may have a different situation than what I'm imagining.)
The best reference that I can find for naming constants comes from the Variables tutorial:
If the name you choose consists of only one word, spell that word in all lowercase letters. If it consists of more than one word, capitalize the first letter of each subsequent word. The names gearRatio and currentGear are prime examples of this convention. If your variable stores a constant value, such as static final int NUM_GEARS = 6, the convention changes slightly, capitalizing every letter and separating subsequent words with the underscore character. By convention, the underscore character is never used elsewhere.
CVertex, make sure to review your code, and, if that doesn't reveal anything, post it. I was just enabling this on a test ASP.NET site I was working on, and it works.
Actually, at some point I had an issue on my code. I didn't spot it until I had a simpler version on a console program and saw it was working (no change on the Gmail side as you were worried about). The below code works just like the samples you referred to:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
var client = new SmtpClient("smtp.gmail.com", 587)
{
Credentials = new NetworkCredential("[email protected]", "mypwd"),
EnableSsl = true
};
client.Send("[email protected]", "[email protected]", "test", "testbody");
Console.WriteLine("Sent");
Console.ReadLine();
}
}
}
I also got it working using a combination of web.config, http://msdn.microsoft.com/en-us/library/w355a94k.aspx and code (because there is no matching EnableSsl
in the configuration file :( ).
I'd like to illustrate how the three terms are implemented in Rails. ActiveRecord calls any type of relationship between two models an association
. One would not find very often the terms composition
and aggregation
, when reading documentation or articles, related to ActiveRecord. An association is created by adding one of the association class macros to the body of the class. Some of these macros are belongs_to
, has_one
, has_many
etc..
If we want to set up a composition
or aggregation
, we need to add belongs_to
to the owned model (also called child) and has_one
or has_many
to the owning model (also called parent). Wether we set up composition
or aggregation
depends on the options we pass to the belongs_to
call in the child model. Prior to Rails 5, setting up belongs_to
without any options created an aggregation
, the child could exist without a parent. If we wanted a composition
, we needed to explicitly declare this by adding the option required: true
:
class Room < ActiveRecord::Base
belongs_to :house, required: true
end
In Rails 5 this was changed. Now, declaring a belongs_to
association creates a composition
by default, the child cannot exist without a parent. So the above example can be re-written as:
class Room < ApplicationRecord
belongs_to :house
end
If we want to allow the child object to exist without a parent, we need to declare this explicitly via the option optional
class Product < ApplicationRecord
belongs_to :category, optional: true
end
In my case, I have applied display:block
in outer class.
Need to experiment, where it fits.
Inside inline svg
adding class and style does not even remove the above white-space.
See: where the display:block
gets applied.
<div class="col-3 col-sm-3 col-md-2 front-tpcard"><a class="noDecoration" href="#">
<img class="img-thumbnail img-fluid"><svg id="Layer_1"></svg>
<p class="cardtxt">Text</p>
</a>
</div>
The class applied
.front-tpcard .img-thumbnail{
display: block; /*To hide the blank whitespace in svg*/
}
This worked for me.
Inner svg
class did not worked
pow
only works on floating-point numbers (double
s, actually). If you want to take powers of integers, and the base isn't known to be an exponent of 2
, you'll have to roll your own.
Usually the dumb way is good enough.
int power(int base, unsigned int exp) {
int i, result = 1;
for (i = 0; i < exp; i++)
result *= base;
return result;
}
Here's a recursive solution which takes O(log n)
space and time instead of the easy O(1)
space O(n)
time:
int power(int base, int exp) {
if (exp == 0)
return 1;
else if (exp % 2)
return base * power(base, exp - 1);
else {
int temp = power(base, exp / 2);
return temp * temp;
}
}
this should work, had to try a while too.. :D
function showHide(shID) {_x000D_
if (document.getElementById(shID)) {_x000D_
if (document.getElementById(shID + '-show').style.display != 'none') {_x000D_
document.getElementById(shID + '-show').style.display = 'none';_x000D_
document.getElementById(shID + '-hide').style.display = 'inline';_x000D_
document.getElementById(shID).style.height = '100px';_x000D_
} else {_x000D_
document.getElementById(shID + '-show').style.display = 'inline';_x000D_
document.getElementById(shID + '-hide').style.display = 'none';_x000D_
document.getElementById(shID).style.height = '0px';_x000D_
}_x000D_
}_x000D_
}
_x000D_
#example {_x000D_
background: red;_x000D_
height: 0px;_x000D_
overflow: hidden;_x000D_
transition: height 2s;_x000D_
-moz-transition: height 2s;_x000D_
/* Firefox 4 */_x000D_
-webkit-transition: height 2s;_x000D_
/* Safari and Chrome */_x000D_
-o-transition: height 2s;_x000D_
/* Opera */_x000D_
}_x000D_
_x000D_
a.showLink,_x000D_
a.hideLink {_x000D_
text-decoration: none;_x000D_
background: transparent url('down.gif') no-repeat left;_x000D_
}_x000D_
_x000D_
a.hideLink {_x000D_
background: transparent url('up.gif') no-repeat left;_x000D_
}
_x000D_
Here is some text._x000D_
<div class="readmore">_x000D_
<a href="#" id="example-show" class="showLink" onclick="showHide('example');return false;">Read more</a>_x000D_
<div id="example" class="more">_x000D_
<div class="text">_x000D_
Here is some more text: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum vitae urna nulla. Vivamus a purus mi. In hac habitasse platea dictumst. In ac tempor quam. Vestibulum eleifend vehicula ligula, et cursus nisl gravida sit amet._x000D_
Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas._x000D_
</div>_x000D_
<p>_x000D_
<a href="#" id="example-hide" class="hideLink" onclick="showHide('example');return false;">Hide</a>_x000D_
</p>_x000D_
</div>_x000D_
</div>
_x000D_
You can use the blade template engine:
@include('view.name')
'view.name' would live in your main views folder:
// for laravel 4.X
app/views/view/name.blade.php
// for laravel 5.X
resources/views/view/name.blade.php
Another example
@include('hello.world');
would display the following view
// for laravel 4.X
app/views/hello/world.blade.php
// for laravel 5.X
resources/views/hello/world.blade.php
Another example
@include('some.directory.structure.foo');
would display the following view
// for Laravel 4.X
app/views/some/directory/structure/foo.blade.php
// for Laravel 5.X
resources/views/some/directory/structure/foo.blade.php
So basically the dot notation defines the directory hierarchy that your view is in, followed by the view name, relative to app/views
folder for laravel 4.x or your resources/views
folder in laravel 5.x
ADDITIONAL
If you want to pass parameters: @include('view.name', array('paramName' => 'value'))
You can then use the value in your views like so <p>{{$paramName}}</p>
code for a simple copy.
cp -r ./SourceFolder ./DestFolder
code for a copy with success result
cp -rv ./SourceFolder ./DestFolder
code for Forcefully if source contains any readonly file it will also copy
cp -rf ./SourceFolder ./DestFolder
for details help
cp --help
The following python script will work on any Mac (Snow Leopard and upward). It can be used on the command line with successive PDF files as arguments, or you can put in into a Run Shell Script action in Automator, and make a Service (Quick Action in Mojave).
You can set the resolution of the output image in the script.
The script and a Quick Action can be downloaded from github.
#!/usr/bin/python
# coding: utf-8
import os, sys
import Quartz as Quartz
from LaunchServices import (kUTTypeJPEG, kUTTypeTIFF, kUTTypePNG, kCFAllocatorDefault)
resolution = 300.0 #dpi
scale = resolution/72.0
cs = Quartz.CGColorSpaceCreateWithName(Quartz.kCGColorSpaceSRGB)
whiteColor = Quartz.CGColorCreate(cs, (1, 1, 1, 1))
# Options: kCGImageAlphaNoneSkipLast (no trans), kCGImageAlphaPremultipliedLast
transparency = Quartz.kCGImageAlphaNoneSkipLast
#Save image to file
def writeImage (image, url, type, options):
destination = Quartz.CGImageDestinationCreateWithURL(url, type, 1, None)
Quartz.CGImageDestinationAddImage(destination, image, options)
Quartz.CGImageDestinationFinalize(destination)
return
def getFilename(filepath):
i=0
newName = filepath
while os.path.exists(newName):
i += 1
newName = filepath + " %02d"%i
return newName
if __name__ == '__main__':
for filename in sys.argv[1:]:
pdf = Quartz.CGPDFDocumentCreateWithProvider(Quartz.CGDataProviderCreateWithFilename(filename))
numPages = Quartz.CGPDFDocumentGetNumberOfPages(pdf)
shortName = os.path.splitext(filename)[0]
prefix = os.path.splitext(os.path.basename(filename))[0]
folderName = getFilename(shortName)
try:
os.mkdir(folderName)
except:
print "Can't create directory '%s'"%(folderName)
sys.exit()
# For each page, create a file
for i in range (1, numPages+1):
page = Quartz.CGPDFDocumentGetPage(pdf, i)
if page:
#Get mediabox
mediaBox = Quartz.CGPDFPageGetBoxRect(page, Quartz.kCGPDFMediaBox)
x = Quartz.CGRectGetWidth(mediaBox)
y = Quartz.CGRectGetHeight(mediaBox)
x *= scale
y *= scale
r = Quartz.CGRectMake(0,0,x, y)
# Create a Bitmap Context, draw a white background and add the PDF
writeContext = Quartz.CGBitmapContextCreate(None, int(x), int(y), 8, 0, cs, transparency)
Quartz.CGContextSaveGState (writeContext)
Quartz.CGContextScaleCTM(writeContext, scale,scale)
Quartz.CGContextSetFillColorWithColor(writeContext, whiteColor)
Quartz.CGContextFillRect(writeContext, r)
Quartz.CGContextDrawPDFPage(writeContext, page)
Quartz.CGContextRestoreGState(writeContext)
# Convert to an "Image"
image = Quartz.CGBitmapContextCreateImage(writeContext)
# Create unique filename per page
outFile = folderName +"/" + prefix + " %03d.png"%i
url = Quartz.CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, outFile, len(outFile), False)
# kUTTypeJPEG, kUTTypeTIFF, kUTTypePNG
type = kUTTypePNG
# See the full range of image properties on Apple's developer pages.
options = {
Quartz.kCGImagePropertyDPIHeight: resolution,
Quartz.kCGImagePropertyDPIWidth: resolution
}
writeImage (image, url, type, options)
del page
For me the problem appeared in this situation:
I installed VS2012 and did not need VS2010 anymore. I wanted to get my computer clean and also removed the VS2010 runtime executables, thinking that no other program would use it. Then I wanted to test my DLL by attaching it to a program (let's call it program X). I got the same error message. I thought that I did something wrong when compiling the DLL. However, the real problem was that I attached the DLL to program X, and program X was compiled in VS2010 with debug info. That is why the error was thrown. I recompiled program X in VS2012, and the error was gone.
You mean something like IPhone checkboxes? Try Thomas Reynolds' iOS Checkboxes script:
Once the files are available to your site, activating the script is very easy:
...
$(document).ready(function() { $(':checkbox').iphoneStyle(); });
Results:
The original question addresses a specific narrow use case. For those who need more generic answers here are some examples:
Given the dataframe below:
import pandas as pd
import numpy as np
df = pd.DataFrame([['dog', 'hound', 5],
['cat', 'ragdoll', 1]],
columns=['animal', 'type', 'age'])
In[1]:
Out[1]:
animal type age
----------------------
0 dog hound 5
1 cat ragdoll 1
Below we are adding a new description
column as a concatenation of other columns by using the +
operation which is overridden for series. Fancy string formatting, f-strings etc won't work here since the +
applies to scalars and not 'primitive' values:
df['description'] = 'A ' + df.age.astype(str) + ' years old ' \
+ df.type + ' ' + df.animal
In [2]: df
Out[2]:
animal type age description
-------------------------------------------------
0 dog hound 5 A 5 years old hound dog
1 cat ragdoll 1 A 1 years old ragdoll cat
We get 1 years
for the cat (instead of 1 year
) which we will be fixing below using conditionals.
Here we are replacing the original animal
column with values from other columns, and using np.where
to set a conditional substring based on the value of age
:
# append 's' to 'age' if it's greater than 1
df.animal = df.animal + ", " + df.type + ", " + \
df.age.astype(str) + " year" + np.where(df.age > 1, 's', '')
In [3]: df
Out[3]:
animal type age
-------------------------------------
0 dog, hound, 5 years hound 5
1 cat, ragdoll, 1 year ragdoll 1
A more flexible approach is to call .apply()
on an entire dataframe rather than on a single column:
def transform_row(r):
r.animal = 'wild ' + r.type
r.type = r.animal + ' creature'
r.age = "{} year{}".format(r.age, r.age > 1 and 's' or '')
return r
df.apply(transform_row, axis=1)
In[4]:
Out[4]:
animal type age
----------------------------------------
0 wild hound dog creature 5 years
1 wild ragdoll cat creature 1 year
In the code above the transform_row(r)
function takes a Series
object representing a given row (indicated by axis=1
, the default value of axis=0
will provide a Series
object for each column). This simplifies processing since we can access the actual 'primitive' values in the row using the column names and have visibility of other cells in the given row/column.
I know late but @TadasPa's answer can be adjusted a little by using
TCreator: new() => T
instead of
TCreator: { new (): T; }
so the result should look like this
class A {
}
class B<T> {
Prop: T;
constructor(TCreator: new() => T) {
this.Prop = new TCreator();
}
}
var test = new B<A>(A);
Java array reflection is for cases where you don't have an instance of the Class available to do "instanceof" on. For example, if you're writing some sort of injection framework, that injects values into a new instance of a class, such as JPA does, then you need to use the isArray() functionality.
I blogged about this earlier in December. http://blog.adamsbros.org/2010/12/08/java-array-reflection/
here you can find an implementation :
def __uniqueid__():
"""
generate unique id with length 17 to 21.
ensure uniqueness even with daylight savings events (clocks adjusted one-hour backward).
if you generate 1 million ids per second during 100 years, you will generate
2*25 (approx sec per year) * 10**6 (1 million id per sec) * 100 (years) = 5 * 10**9 unique ids.
with 17 digits (radix 16) id, you can represent 16**17 = 295147905179352825856 ids (around 2.9 * 10**20).
In fact, as we need far less than that, we agree that the format used to represent id (seed + timestamp reversed)
do not cover all numbers that could be represented with 35 digits (radix 16).
if you generate 1 million id per second with this algorithm, it will increase the seed by less than 2**12 per hour
so if a DST occurs and backward one hour, we need to ensure to generate unique id for twice times for the same period.
the seed must be at least 1 to 2**13 range. if we want to ensure uniqueness for two hours (100% contingency), we need
a seed for 1 to 2**14 range. that's what we have with this algorithm. You have to increment seed_range_bits if you
move your machine by airplane to another time zone or if you have a glucky wallet and use a computer that can generate
more than 1 million ids per second.
one word about predictability : This algorithm is absolutely NOT designed to generate unpredictable unique id.
you can add a sha-1 or sha-256 digest step at the end of this algorithm but you will loose uniqueness and enter to collision probability world.
hash algorithms ensure that for same id generated here, you will have the same hash but for two differents id (a pair of ids), it is
possible to have the same hash with a very little probability. You would certainly take an option on a bijective function that maps
35 digits (or more) number to 35 digits (or more) number based on cipher block and secret key. read paper on breaking PRNG algorithms
in order to be convinced that problems could occur as soon as you use random library :)
1 million id per second ?... on a Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz, you get :
>>> timeit.timeit(uniqueid,number=40000)
1.0114529132843018
an average of 40000 id/second
"""
mynow=datetime.now
sft=datetime.strftime
# store old datetime each time in order to check if we generate during same microsecond (glucky wallet !)
# or if daylight savings event occurs (when clocks are adjusted backward) [rarely detected at this level]
old_time=mynow() # fake init - on very speed machine it could increase your seed to seed + 1... but we have our contingency :)
# manage seed
seed_range_bits=14 # max range for seed
seed_max_value=2**seed_range_bits - 1 # seed could not exceed 2**nbbits - 1
# get random seed
seed=random.getrandbits(seed_range_bits)
current_seed=str(seed)
# producing new ids
while True:
# get current time
current_time=mynow()
if current_time <= old_time:
# previous id generated in the same microsecond or Daylight saving time event occurs (when clocks are adjusted backward)
seed = max(1,(seed + 1) % seed_max_value)
current_seed=str(seed)
# generate new id (concatenate seed and timestamp as numbers)
#newid=hex(int(''.join([sft(current_time,'%f%S%M%H%d%m%Y'),current_seed])))[2:-1]
newid=int(''.join([sft(current_time,'%f%S%M%H%d%m%Y'),current_seed]))
# save current time
old_time=current_time
# return a new id
yield newid
""" you get a new id for each call of uniqueid() """
uniqueid=__uniqueid__().next
import unittest
class UniqueIdTest(unittest.TestCase):
def testGen(self):
for _ in range(3):
m=[uniqueid() for _ in range(10)]
self.assertEqual(len(m),len(set(m)),"duplicates found !")
hope it helps !
I've found this answer in the site https://plainjs.com/javascript/styles/set-and-get-css-styles-of-elements-53/.
In this code we add multiple styles in an element:
let_x000D_
element = document.querySelector('span')_x000D_
, cssStyle = (el, styles) => {_x000D_
for (var property in styles) {_x000D_
el.style[property] = styles[property];_x000D_
}_x000D_
}_x000D_
;_x000D_
_x000D_
cssStyle(element, { background:'tomato', color: 'white', padding: '0.5rem 1rem'});
_x000D_
span{_x000D_
font-family: sans-serif;_x000D_
color: #323232;_x000D_
background: #fff;_x000D_
}
_x000D_
<span>_x000D_
lorem ipsum_x000D_
</span>
_x000D_
Activewidgets has a very nice looking one. No idea how well it performs on large datasets. http://www.activewidgets.com/ui.combo/
If the .stop()
is deprecated then I don't think we should re-add it like @MuazKhan dose. It's a reason as to why things get deprecated and should not be used anymore. Just create a helper function instead... Here is a more es6 version
function stopStream (stream) {
for (let track of stream.getTracks()) {
track.stop()
}
}
The example from jQuery's website animates size AND font but you could easily modify it to fit your needs
$("#go").click(function(){
$("#block").animate({
width: "70%",
opacity: 0.4,
marginLeft: "0.6in",
fontSize: "3em",
borderWidth: "10px"
}, 1500 );
"Failed to read artifact descriptor" problems generally indicate a problem with the dependency's pom file in the maven repository. I would suggest you to double check if the pom file's name is the same with the name maven expects, and also to check if the pom file contents are valid.
Pandas is pretty good at dealing with data. Here is one example how to use it:
import pandas as pd
# Read the CSV into a pandas data frame (df)
# With a df you can do many things
# most important: visualize data with Seaborn
df = pd.read_csv('filename.csv', delimiter=',')
# Or export it in many ways, e.g. a list of tuples
tuples = [tuple(x) for x in df.values]
# or export it as a list of dicts
dicts = df.to_dict().values()
One big advantage is that pandas deals automatically with header rows.
If you haven't heard of Seaborn, I recommend having a look at it.
See also: How do I read and write CSV files with Python?
import pandas as pd
# Get data - reading the CSV file
import mpu.pd
df = mpu.pd.example_df()
# Convert
dicts = df.to_dict('records')
The content of df is:
country population population_time EUR
0 Germany 82521653.0 2016-12-01 True
1 France 66991000.0 2017-01-01 True
2 Indonesia 255461700.0 2017-01-01 False
3 Ireland 4761865.0 NaT True
4 Spain 46549045.0 2017-06-01 True
5 Vatican NaN NaT True
The content of dicts is
[{'country': 'Germany', 'population': 82521653.0, 'population_time': Timestamp('2016-12-01 00:00:00'), 'EUR': True},
{'country': 'France', 'population': 66991000.0, 'population_time': Timestamp('2017-01-01 00:00:00'), 'EUR': True},
{'country': 'Indonesia', 'population': 255461700.0, 'population_time': Timestamp('2017-01-01 00:00:00'), 'EUR': False},
{'country': 'Ireland', 'population': 4761865.0, 'population_time': NaT, 'EUR': True},
{'country': 'Spain', 'population': 46549045.0, 'population_time': Timestamp('2017-06-01 00:00:00'), 'EUR': True},
{'country': 'Vatican', 'population': nan, 'population_time': NaT, 'EUR': True}]
import pandas as pd
# Get data - reading the CSV file
import mpu.pd
df = mpu.pd.example_df()
# Convert
lists = [[row[col] for col in df.columns] for row in df.to_dict('records')]
The content of lists
is:
[['Germany', 82521653.0, Timestamp('2016-12-01 00:00:00'), True],
['France', 66991000.0, Timestamp('2017-01-01 00:00:00'), True],
['Indonesia', 255461700.0, Timestamp('2017-01-01 00:00:00'), False],
['Ireland', 4761865.0, NaT, True],
['Spain', 46549045.0, Timestamp('2017-06-01 00:00:00'), True],
['Vatican', nan, NaT, True]]
You can use SOAP services this way too:
<?php
//Create the client object
$soapclient = new SoapClient('http://www.webservicex.net/globalweather.asmx?WSDL');
//Use the functions of the client, the params of the function are in
//the associative array
$params = array('CountryName' => 'Spain', 'CityName' => 'Alicante');
$response = $soapclient->getWeather($params);
var_dump($response);
// Get the Cities By Country
$param = array('CountryName' => 'Spain');
$response = $soapclient->getCitiesByCountry($param);
var_dump($response);
This is an example with a real service, and it works when the url is up.
Just in case the http://www.webservicex.net is down.
Here is another example using the example web service from W3C XML Web Services example, you can find more information on the link.
<?php
//Create the client object
$soapclient = new SoapClient('https://www.w3schools.com/xml/tempconvert.asmx?WSDL');
//Use the functions of the client, the params of the function are in
//the associative array
$params = array('Celsius' => '25');
$response = $soapclient->CelsiusToFahrenheit($params);
var_dump($response);
// Get the Celsius degrees from the Farenheit
$param = array('Fahrenheit' => '25');
$response = $soapclient->FahrenheitToCelsius($param);
var_dump($response);
This is working and returning the converted temperature values.
Hope this helps.
If you're using Windows Server 2008 R2 then there is an x64 and x86 version of PowerShell both of which have to have their execution policies set. Did you set the execution policy on both hosts?
As an Administrator, you can set the execution policy by typing this into your PowerShell window:
Set-ExecutionPolicy RemoteSigned
For more information, see Using the Set-ExecutionPolicy Cmdlet.
When you are done, you can set the policy back to its default value with:
Set-ExecutionPolicy Restricted
Not exactly what you ask for, but I've found it easier to just all agree on a coding standard astyle can generate and then automate the process.
Instead of doing findElement, do findElements and check the length of the returned elements is 0. This is how I'm doing using WebdriverJS and I expect the same will work in Java
How about alias gcc99= gcc -std=c99
?
Will something like this work for you? What this does is query the content resolver to find the file path data that is stored for that content entry
public static String getRealPathFromUri(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
}
This will end up giving you an absolute file path that you can construct a file uri from
Another variation. This one
NotSupportedException
if the type can not be converted from string
. For instance, a custom struct without a type converter.(T?)null
if the string fails to parse. No need to check for null or whitespace. using System.ComponentModel;
public static Nullable<T> ToNullable<T>(this string s) where T : struct
{
var ret = new Nullable<T>();
var conv = TypeDescriptor.GetConverter(typeof(T));
if (!conv.CanConvertFrom(typeof(string)))
{
throw new NotSupportedException();
}
if (conv.IsValid(s))
{
ret = (T)conv.ConvertFrom(s);
}
return ret;
}
I had the same issue: if I doubleclick on a jar executable file, and my Java application does not start.
So tried to change manually also registry key, but it didn't help me. Tried to reinstall JDK newer/older without any result. (I have several versions of Java)
And I've solved it only using jarfix program. Jarfix automatically fixed .jar association problem on Windows system. (check regedit: PC\HKEY_CLASSES_ROOT\jarfile\shell\open\command
)
What says Johann Nepomuk Löfflmann:
The root cause for the problem above is, that a program has stolen the .jar association. If you have installed the Java Runtime Environment the first time, the file type called "jar" is assigned to javaw.exe correctly. "jar" is an abbreviation for "java archive" and javaw.exe is the correct program to execute a .jar. However, on Windows any program can steal a file type at any time even if it is already associated with a program. Many zip/unzip programs prefer to do this, because a jar is stored in the .zip format. If you doubleclick on a .jar, your pack program opens the file, rather than javaw runs the program, because your pack program ignores the meta information which are also stored in a .jar. In the Oracle bug database there is the low-priority report 4912211 "add mechanism to restore hijacked .jar and .jnlp file extensions", but it has been closed as "Closed, Will Not Fix".
You may also miss the file connection with .jar if you are using a free OpenJDK without an installer.
Notice: my OS is Windows 10, but logic is the same for 7, 8 and so on.
Helpful links:
https://windowsreport.com/jar-files-not-opening-windows-10/
https://johann.loefflmann.net/en/software/jarfix/index.html
From what I understand you want to make a navigation bar or something similar to it. What I recommend doing is making a list and editing the items from there. Just try this;
<ul>
<li class='item col-md-12 panel' id='gameplay-title'>Title</li>
<li class='item col-md-6 col-md-offset-3 panel' id='gameplay-scoreboard'>Scoreboard</li>
</ul>
And so on... To add more categories add another ul in there. Now, for the CSS you just need this;
ul {
list-style: none;
}
.item {
display: inline;
padding-right: 20px;
}
I want to be able to change the background color to white in my android app in the simplest way possible.
Set parentViewStyle
in all your parent views. Like most parent view of your activity, fragment and dialogs.
<LinearLayout style="@style/parentViewStyle">
... other components inside
</LinearLayout>
Just put this style inside res>values>styles.xml
<style name="parentViewStyle">
<item name="android:layout_height">match_parent</item>
<item name="android:layout_width">match_parent</item>
<item name="android:background">@color/white</item> // set your color here.
<item name="android:orientation">vertical</item>
</style>
By this way, you don't have to change background color many times in future.
Declaration of new variables in case statements is what causing problems. Enclosing all case
statements in {}
will limit the scope of newly declared variables to the currently executing case which solves the problem.
switch(choice)
{
case 1: {
// .......
}break;
case 2: {
// .......
}break;
case 3: {
// .......
}break;
}
For others facing a similar problem to mine, where you know a particular object property cannot be null, you can use the non-null assertion operator (!) after the item in question. This was my code:
const naciStatus = dataToSend.naci?.statusNACI;
if (typeof naciStatus != "undefined") {
switch (naciStatus) {
case "AP":
dataToSend.naci.certificateStatus = "FALSE";
break;
case "AS":
case "WR":
dataToSend.naci.certificateStatus = "TRUE";
break;
default:
dataToSend.naci.certificateStatus = "";
}
}
And because dataToSend.naci
cannot be undefined in the switch statement, the code can be updated to include exclamation marks as follows:
const naciStatus = dataToSend.naci?.statusNACI;
if (typeof naciStatus != "undefined") {
switch (naciStatus) {
case "AP":
dataToSend.naci!.certificateStatus = "FALSE";
break;
case "AS":
case "WR":
dataToSend.naci!.certificateStatus = "TRUE";
break;
default:
dataToSend.naci!.certificateStatus = "";
}
}
You can use Jquery's on method and listen for the scroll
event.
I added both declarations on the a href which worked in outlook and gmail apps. outlook ignores the !important and gmail needs it. Web versions of email work with both/either.
text-decoration: none !important; text-decoration: none;
If one really wanted to they could make there own version of scanf()
like so:
import java.util.ArrayList;
import java.util.Scanner;
public class Testies {
public static void main(String[] args) {
ArrayList<Integer> nums = new ArrayList<Integer>();
ArrayList<String> strings = new ArrayList<String>();
// get input
System.out.println("Give me input:");
scanf(strings, nums);
System.out.println("Ints gathered:");
// print numbers scanned in
for(Integer num : nums){
System.out.print(num + " ");
}
System.out.println("\nStrings gathered:");
// print strings scanned in
for(String str : strings){
System.out.print(str + " ");
}
System.out.println("\nData:");
for(int i=0; i<strings.size(); i++){
System.out.println(nums.get(i) + " " + strings.get(i));
}
}
// get line from system
public static void scanf(ArrayList<String> strings, ArrayList<Integer> nums){
Scanner getLine = new Scanner(System.in);
Scanner input = new Scanner(getLine.nextLine());
while(input.hasNext()){
// get integers
if(input.hasNextInt()){
nums.add(input.nextInt());
}
// get strings
else if(input.hasNext()){
strings.add(input.next());
}
}
}
// pass it a string for input
public static void scanf(String in, ArrayList<String> strings, ArrayList<Integer> nums){
Scanner input = (new Scanner(in));
while(input.hasNext()){
// get integers
if(input.hasNextInt()){
nums.add(input.nextInt());
}
// get strings
else if(input.hasNext()){
strings.add(input.next());
}
}
}
}
Obviously my methods only check for Strings and Integers, if you want different data types to be processed add the appropriate arraylists and checks for them. Also, hasNext()
should probably be at the bottom of the if-else if
sequence since hasNext()
will return true for all of the data in the string.
Output:
Give me input:
apples 8 9 pears oranges 5
Ints gathered:
8 9 5
Strings gathered:
apples pears oranges
Data:
8 apples
9 pears
5 oranges
Probably not the best example; but, the point is that Scanner
implements the Iterator
class. Making it easy to iterate through the scanners input using the hasNext<datatypehere>()
methods; and then storing the input.
Using the type="email"
or type="url"
will give you a keyboard on some phones at least, such as iPhone. For phone numbers, you can use type="tel"
.
It's an attribute wildcard selector. In the sample you've given, it looks for any child element under .show-grid
that has a class that CONTAINS span
.
So would select the <strong>
element in this example:
<div class="show-grid">
<strong class="span6">Blah blah</strong>
</div>
You can also do searches for 'begins with...'
div[class^="something"] { }
which would work on something like this:-
<div class="something-else-class"></div>
and 'ends with...'
div[class$="something"] { }
which would work on
<div class="you-are-something"></div>
Good references
In order to give a value in the table, we need to give a command:
php artisan make:migration create_users_table
and after then this command line
php artisan migrate
......
Your first example is perfectly fine. Even the official Python documentation recommends this style known as EAFP.
Personally, I prefer to avoid nesting when it's not necessary:
def __getattribute__(self, item):
try:
return object.__getattribute__(item)
except AttributeError:
pass # Fallback to dict
try:
return self.dict[item]
except KeyError:
raise AttributeError("The object doesn't have such attribute") from None
PS. has_key()
has been deprecated for a long time in Python 2. Use item in self.dict
instead.
The CSS tag 'margin' is actually a shorthand for the four separate margin values, top/left/bottom/right. Use css('marginTop')
, etc. - note they will have 'px' on the end if you have specified them that way.
Use parseInt()
around the result to turn it in to the number value.
NB. As noted by Omaty, the order of the shorthand 'margin' tag is:
top right bottom left
- the above list was not written in a way intended to be the list order, just a list of that specified in the tag.
https://github.com/JamesHeinrich/getID3 download getid3 zip and than only getid3 named folder copy paste in project folder and use it as below show...
<?php
require_once('/fire/scripts/lib/getid3/getid3/getid3.php');
$getID3 = new getID3();
$filename="/fire/My Documents/video/ferrari1.mpg";
$fileinfo = $getID3->analyze($filename);
$width=$fileinfo['video']['resolution_x'];
$height=$fileinfo['video']['resolution_y'];
echo $fileinfo['video']['resolution_x']. 'x'. $fileinfo['video']['resolution_y'];
echo '<pre>';print_r($fileinfo);echo '</pre>';
?>
psxls gave a great answer but I think my Notepad++ version is slightly different so the $ (dollar sign) capturing did not work.
I have Notepad++ v.5.9.3 and here's how you can accomplish your task:
Search for the pattern: value=\"([0-9]*)\" And replace with: \1 (whatever you want to do around that capturing group)
Ex. Surround with square brackets
[\1] --> will produce value="[4]"
In general:
Database and table names are not case sensitive in Windows, and case sensitive in most varieties of Unix.
In MySQL, databases correspond to directories within the data directory. Each table within a database corresponds to at least one file within the database directory. Consequently, the case sensitivity of the underlying operating system plays a part in the case sensitivity of database and table names.
One can configure how tables names are stored on the disk using the system variable lower_case_table_names
(in the my.cnf configuration file under [mysqld]).
Read the section: 10.2.2 Identifier Case Sensitivity for more information.
And I simply got this error because I used a totally different DocumentRoot directory.
My main DocumentRoot was the default /var/www/html
and on the VirtualHost I used /sites/example.com
I have created a link on /var/www/html/example.com
(to /sites/example.com
).
DocumentRoot was set to /var/www/html/example.com
It worked like a charm.
It is a one-line approach by using aggregate
.
> aggregate(data.frame(count = v), list(value = v), length)
value count
1 1 25
2 2 75
In WinForms and WebForms you can do:
txtName.BackColor = Color.Aqua;
The read(1) utility along with output redirection of the ls(1) command will do what you want.
Extension for array to do it easily and allow chaining for Swift 4.2 and up:
public extension Array where Element: Equatable {
@discardableResult
public mutating func remove(_ item: Element) -> Array {
if let index = firstIndex(where: { item == $0 }) {
remove(at: index)
}
return self
}
@discardableResult
public mutating func removeAll(_ item: Element) -> Array {
removeAll(where: { item == $0 })
return self
}
}
Best explanation for X = aY + b
(in fact it f(x) = ax + b
)) is provided at https://math.stackexchange.com/a/906280/357701
A Simpler one by just adjusting lightness/luma/brightness for contrast as is below:
import cv2
img = cv2.imread('test.jpg')
cv2.imshow('test', img)
cv2.waitKey(1000)
imghsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
imghsv[:,:,2] = [[max(pixel - 25, 0) if pixel < 190 else min(pixel + 25, 255) for pixel in row] for row in imghsv[:,:,2]]
cv2.imshow('contrast', cv2.cvtColor(imghsv, cv2.COLOR_HSV2BGR))
cv2.waitKey(1000)
raw_input()
If more than one result is expected, then the getResponse()
method will return a Vector
containing the various responses.
In which case the offending code becomes:
Object result = envelope.getResponse();
// treat result as a vector
String resultText = null;
if (result instanceof Vector)
{
SoapPrimitive element0 = (SoapPrimitive)((Vector) result).elementAt(0);
resultText = element0.toString();
}
tv.setText(resultText);
Answer based on the ksoap2-android (mosabua fork)
There is a solution even if you don't want to remove your local changes.
Just fix the unmerged files (by git add
or git remove
). Then do git pull
.
try:
[checked]="item.checked"
check out: How to Deal with Different Form Controls in Angular
It checks to see whether the specific object is contained in the list.
You might be better using the Find method on the list.
Here's an example
List<CartProduct> lst = new List<CartProduct>();
CartProduct objBeer;
objBeer = lst.Find(x => (x.Name == "Beer"));
Hope that helps
You should also look at LinQ - overkill for this perhaps, but a useful tool nonetheless...
Composition to the rescue!
Given the reason, rather than invoking actions across controllers one should design controllers to seperate shared and custom parts of the code. This will help to avoid both - code duplication and breaking MVC pattern.
Although that can be done in a number of ways, using concerns (composition) is a good practice.
# controllers/a_controller.rb
class AController < ApplicationController
include Createable
private def redirect_url
'one/url'
end
end
# controllers/b_controller.rb
class BController < ApplicationController
include Createable
private def redirect_url
'another/url'
end
end
# controllers/concerns/createable.rb
module Createable
def create
do_usefull_things
redirect_to redirect_url
end
end
Hope that helps.
Try checking if the page has been scrolled and only then reset position:
var scrolled = false;
$(window).scroll(function(){
scrolled = true;
});
if ( window.location.hash && scrolled ) {
$(window).scrollTop( 0 );
}
mvn clean package -DpropEnv=PROD
Then using like this in POM.xml
<properties>
<myproperty>${propEnv}</myproperty>
</properties>
You may drag'n'drop your folder to Side bar. To enable Side bar you should do View -> Side bar -> show opened files. You'll got opened files (tabs) tree and folder structure at Side bar.
I had problem on Linux. I wrote
chown -R myUserName /home/myusername/myfolder
in my project folder.
WARNING: this is NOT the right way to fix it; DO NOT RUN IT, if you aren't sure of what could be the consequences.
Above methods didn´t work for me. This did:
Dim arrayIsNothing As Boolean
On Error Resume Next
arrayIsNothing = IsNumeric(UBound(YOUR_ARRAY)) And False
If Err.Number <> 0 Then arrayIsNothing = True
Err.Clear
On Error GoTo 0
'Now you can test:
if arrayIsNothing then ...
If you want to just check if they are identical or not, a == b
should give you true / false with ordering taken into account.
In case you want to compare elements, you can use numpy for comparison
c = (numpy.array(a) == numpy.array(b))
Here, c will contain an array with 3 elements all of which are true (for your example). In the event elements of a and b don't match, then the corresponding elements in c will be false.
Also, check if the user does not select anything.
var radioanswer = 'none';
if ($('input[name=myRadio]:checked').val() != null) {
radioanswer = $('input[name=myRadio]:checked').val();
}
Is this what you are looking for?
https://maps.googleapis.com/maps/api/place/search/xml?location=49.260691,-123.137784&radius=500&sensor=false&key=*PlacesAPIKey*&types=restaurant
types is optional
I found out that composer runs with the php-version /usr/bin/env finds first in $PATH, which is 7.1.33 in my case on MacOs. So shifting mamp's php to the beginning helped me here.
PHPVER=$(/usr/libexec/PlistBuddy -c "print phpVersion" ~/Library/Preferences/de.appsolute.mamppro.plist)
export PATH=/Applications/MAMP/bin/php/php${PHPVER}/bin:$PATH
If your newline character is CRLF
, that means it's a CHR(13)
followed by CHR(10)
. If you REPLACE(input, CHR(10), '_')
, that turns into CHR(13)
followed by an underscore. Since CR
on its own can be just as well rendered as a newline character, it'll appear to you as if an underscore has ben inserted after your newline, but actually only half of your newline has been replaced.
Use REPLACE(REPLACE(input, CHR(13)), CHR(10))
to replace all CR
's and LF
's.
A VIP swap is an internal change to Azure's routers/load balancers, not an external DNS change. They're just routing traffic to go from one internal [set of] server[s] to another instead. Therefore the DNS info for mysite.cloudapp.net doesn't change at all. Therefore the change for people accessing via the IP bound to mysite.cloudapp.net (and CNAME'd by you) will see the change as soon as the VIP swap is complete.
Oracle does not allow joining tables in an UPDATE statement. You need to rewrite your statement with a co-related sub-select
Something like this:
UPDATE system_info
SET field_value = 'NewValue'
WHERE field_desc IN (SELECT role_type
FROM system_users
WHERE user_name = 'uname')
For a complete description on the (valid) syntax of the UPDATE statement, please read the manual:
http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_10008.htm#i2067715
Enter the location by Autocomplete and rest of all the fields: latitude and Longititude values get automatically filled.
Replace API KEY with your Google API key
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&libraries=places"></script>
<link type="text/css" rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500">
</head>
<body>
<textarea placeholder="Enter Area name to populate Latitude and Longitude" name="address" onFocus="initializeAutocomplete()" id="locality" ></textarea><br>
<input type="text" name="city" id="city" placeholder="City" value="" ><br>
<input type="text" name="latitude" id="latitude" placeholder="Latitude" value="" ><br>
<input type="text" name="longitude" id="longitude" placeholder="Longitude" value="" ><br>
<input type="text" name="place_id" id="location_id" placeholder="Location Ids" value="" ><br>
<script type="text/javascript">
function initializeAutocomplete(){
var input = document.getElementById('locality');
// var options = {
// types: ['(regions)'],
// componentRestrictions: {country: "IN"}
// };
var options = {}
var autocomplete = new google.maps.places.Autocomplete(input, options);
google.maps.event.addListener(autocomplete, 'place_changed', function() {
var place = autocomplete.getPlace();
var lat = place.geometry.location.lat();
var lng = place.geometry.location.lng();
var placeId = place.place_id;
// to set city name, using the locality param
var componentForm = {
locality: 'short_name',
};
for (var i = 0; i < place.address_components.length; i++) {
var addressType = place.address_components[i].types[0];
if (componentForm[addressType]) {
var val = place.address_components[i][componentForm[addressType]];
document.getElementById("city").value = val;
}
}
document.getElementById("latitude").value = lat;
document.getElementById("longitude").value = lng;
document.getElementById("location_id").value = placeId;
});
}
</script>
</body>
</html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="//maps.googleapis.com/maps/api/js?libraries=places&key=API KEY"></script>
<script src="https://fonts.googleapis.com/css?family=Roboto:300,400,500></script>
1) To create new array which, you cannot iterate over, you can use array constructor:
Array(100)
or new Array(100)
2) You can create new array, which can be iterated over like below:
a) All JavaScript versions
Array.apply(null, Array(100))
b) From ES6 JavaScript version
[...Array(100)]
Array(100).fill(undefined)
Array.from({ length: 100 })
You can map over these arrays like below.
Array(4).fill(null).map((u, i) => i)
[0, 1, 2, 3]
[...Array(4)].map((u, i) => i)
[0, 1, 2, 3]
Array.apply(null, Array(4)).map((u, i) => i)
[0, 1, 2, 3]
Array.from({ length: 4 }).map((u, i) => i)
[0, 1, 2, 3]
I know this post is old, but just wanted to add a comment if somebody should be looking at this post and trying to find a solution for this problem.
You can indeed read the CPU temperature very easily in C# by using a WMI approach.
To get a Celsius value, I have created a wrapper that converts the value returned by WMI and wraps it into an easy to use object.
Please remember to add a reference to the System.Management.dll
in Visual Studio.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
namespace RCoding.Common.Diagnostics.SystemInfo
{
public class Temperature
{
public double CurrentValue { get; set; }
public string InstanceName { get; set; }
public static List<Temperature> Temperatures
{
get
{
List<Temperature> result = new List<Temperature>();
ManagementObjectSearcher searcher = new ManagementObjectSearcher(@"root\WMI", "SELECT * FROM MSAcpi_ThermalZoneTemperature");
foreach (ManagementObject obj in searcher.Get())
{
Double temp = Convert.ToDouble(obj["CurrentTemperature"].ToString());
temp = (temp - 2732) / 10.0;
result.Add(new Temperature { CurrentValue = temp, InstanceName = obj["InstanceName"].ToString() });
}
return result;
}
}
}
}
Update 25.06.2010:
(Just saw that a link was posted to the same kind of solution above... Anyway, I will leave this piece of code if somebody should want to use it :-) )
Include using namespace System.Linq
List<string> stringList = line.Split(',').ToList();
you can make use of it with ease for iterating through each item.
foreach(string str in stringList)
{
}
String.Split()
returns an array, hence convert it to a list using ToList()
To set up something simple that allows a Postgresql connection from the docker container to my localhost I used this in postgresql.conf:
listen_addresses = '*'
And added this pg_hba.conf:
host all all 172.17.0.0/16 password
Then do a restart. My client from the docker container (which was at 172.17.0.2) could then connect to Postgresql running on my localhost using host:password, database, username and password.
Make sure you have closed your MSAccess file before running the java program.
Just throw everything you read into a MemoryStream
and get the byte array in the end. As noted, you should be reading from the underlying stream to get the raw bytes.
var bytes = default(byte[]);
using (var memstream = new MemoryStream())
{
var buffer = new byte[512];
var bytesRead = default(int);
while ((bytesRead = reader.BaseStream.Read(buffer, 0, buffer.Length)) > 0)
memstream.Write(buffer, 0, bytesRead);
bytes = memstream.ToArray();
}
Or if you don't want to manage the buffers:
var bytes = default(byte[]);
using (var memstream = new MemoryStream())
{
reader.BaseStream.CopyTo(memstream);
bytes = memstream.ToArray();
}
Credit goes for JAcob Tomao for the code. I only added some comments to help beginners like me understand it. I hope it helps.
// read about Generic Types In Java & the use of class<T,...> syntax
// This class will Allow me to create 2D Arrays that do not have fixed sizes
class TwoDimArrayList<T> extends ArrayList<ArrayList<T>> {
public void addToInnerArray(int index, T element) {
while (index >= this.size()) {
// Create enough Arrays to get to position = index
this.add(new ArrayList<T>()); // (as if going along Vertical axis)
}
// this.get(index) returns the Arraylist instance at the "index" position
this.get(index).add(element); // (as if going along Horizontal axis)
}
public void addToInnerArray(int index, int index2, T element) {
while (index >= this.size()) {
this.add(new ArrayList<T>());// (as if going along Vertical
}
//access the inner ArrayList at the "index" position.
ArrayList<T> inner = this.get(index);
while (index2 >= inner.size()) {
//add enough positions containing "null" to get to the position index 2 ..
//.. within the inner array. (if the requested position is too far)
inner.add(null); // (as if going along Horizontal axis)
}
//Overwrite "null" or "old_element" with the new "element" at the "index 2" ..
//.. position of the chosen(index) inner ArrayList
inner.set(index2, element); // (as if going along Horizontal axis)
}
}
Config is written to .npmrc
files so just delete it. NPM looks up config in this order, setting in the next overwrites the previous one. So make sure there might be global config that usually is overwritten in per-project that becomes active after you have deleted the per-project config file. npm config list
will allways list the active config.
/path/to/npm/npmrc
)$PREFIX/etc/npmrc
)$HOME/.npmrc
)/path/to/my/project/.npmrc
)Here, the '\n'
left by cin, is creating issues.
do {
system("cls");
manageCustomerMenu();
cin >> choice; #This cin is leaving a trailing \n
system("cls");
switch (choice) {
case '1':
createNewCustomer();
break;
This \n
is being consumed by next getline in createNewCustomer()
. You should use getline instead -
do {
system("cls");
manageCustomerMenu();
getline(cin, choice)
system("cls");
switch (choice) {
case '1':
createNewCustomer();
break;
I think this would resolve the issue.
for huge size collections, you can use Bulk.insert()
var bulk = db.getSiblingDB(dbName)[targetCollectionName].initializeUnorderedBulkOp();
db.getCollection(sourceCollectionName).find().forEach(function (d) {
bulk.insert(d);
});
bulk.execute();
This will save a lot of time. In my case, I'm copying collection with 1219 documents: iter vs Bulk (67 secs vs 3 secs)
I find redo.el
extremly handy for doing "normal" undo/redo, and I usually bind it to C-S-z and undo to C-z, like this:
(when (require 'redo nil 'noerror)
(global-set-key (kbd "C-S-z") 'redo))
(global-set-key (kbd "C-z") 'undo)
Just download the file, put it in your lisp-path and paste the above in your .emacs
.
class Program
{
static void Main(string[] args)
{
Console.WriteLine("223232-1.jpg".GetUntilOrEmpty());
Console.WriteLine("443-2.jpg".GetUntilOrEmpty());
Console.WriteLine("34443553-5.jpg".GetUntilOrEmpty());
Console.ReadKey();
}
}
static class Helper
{
public static string GetUntilOrEmpty(this string text, string stopAt = "-")
{
if (!String.IsNullOrWhiteSpace(text))
{
int charLocation = text.IndexOf(stopAt, StringComparison.Ordinal);
if (charLocation > 0)
{
return text.Substring(0, charLocation);
}
}
return String.Empty;
}
}
Results:
223232
443
34443553
344
34
FWIW,
Poor mans security folder (to protect a public shared folder from little prying eyes ;) )
mkdir -p {0..9}/{0..9}/{0..9}/{0..9}
Now you can put your files in a pin numbered folder. Not exactly waterproof, but it's a barrier for the youngest.
you are get the view in string using this way
protected string RenderPartialViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
viewName = ControllerContext.RouteData.GetRequiredString("action");
if (model != null)
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, viewName);
ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw);
viewResult.View.Render(viewContext, sw);
return sw.GetStringBuilder().ToString();
}
}
We are call this method in two way
string strView = RenderPartialViewToString("~/Views/Shared/_Header.cshtml", null)
OR
var model = new Person()
string strView = RenderPartialViewToString("~/Views/Shared/_Header.cshtml", model)
Performance Analysis For loops performs faster than map or foreach as number of elements in a array increases.
let array = [];
for (var i = 0; i < 20000000; i++) {
array.push(i)
}
console.time('map');
array.map(num => {
return num * 4;
});
console.timeEnd('map');
console.time('forEach');
array.forEach((num, index) => {
return array[index] = num * 4;
});
console.timeEnd('forEach');
console.time('for');
for (i = 0; i < array.length; i++) {
array[i] = array[i] * 2;
}
console.timeEnd('for');
For IntelliJ IDEA 2019.3.4 (Ultimate Edition), the following worked for me:
The document for string::npos
says:
npos is a static member constant value with the greatest possible value for an element of type size_t.
As a return value it is usually used to indicate failure.
This constant is actually defined with a value of -1 (for any trait), which because size_t is an unsigned integral type, becomes the largest possible representable value for this type.
Check your servers error log, typically /var/log/apache2/error.log
.
Some useful are:
Free:
Paid:
The best entries in my opinion are Flexigrid and jQuery Grid.
I suppose you want to commit the changes to one branch and then make those changes visible in the other branch. In git you should have no changes on top of HEAD when changing branches.
You commit only the changed files by:
git commit [some files]
Or if you are sure that you have a clean staging area you can
git add [some files] # add [some files] to staging area
git add [some more files] # add [some more files] to staging area
git commit # commit [some files] and [some more files]
If you want to make that commit available on both branches you do
git stash # remove all changes from HEAD and save them somewhere else
git checkout <other-project> # change branches
git cherry-pick <commit-id> # pick a commit from ANY branch and apply it to the current
git checkout <first-project> # change to the other branch
git stash pop # restore all changes again
I kept getting this error, when using wildcard subdomains with my app. I had the site url set to: http://myapp.com and app domain also to http://myapp.com, and also the same value for the Valid OAuth redirect URIs in the advanced tab of the settings app. I tried different combinations but only setting the http://subdomain.myapp.com as the redirect value worked, of course only for that subdomain.
The solution was to empty the redirect fields, leave it blank, that worked! ;)
in windows 7 this returns the desktop path:
FOR /F "usebackq tokens=3 " %%i in (`REG QUERY "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v Desktop`) DO SET DESKTOPDIR=%%i FOR /F "usebackq delims=" %%i in (`ECHO %DESKTOPDIR%`) DO SET DESKTOPDIR=%%i ECHO %DESKTOPDIR%
This is possible.
//Create the select list item you want to add
SelectListItem selListItem = new SelectListItem() { Value = "null", Text = "Select One" };
//Create a list of select list items - this will be returned as your select list
List<SelectListItem> newList = new List<SelectListItem>();
//Add select list item to list of selectlistitems
newList.Add(selListItem);
//Return the list of selectlistitems as a selectlist
return new SelectList(newList, "Value", "Text", null);
This might be useful. http://nanodeath.github.com/HydrateJS/ https://github.com/nanodeath/HydrateJS
Use hydrate.stringify
to serialize the object and hydrate.parse
to deserialize.
http://en.wikipedia.org/wiki/Byte_order_mark
The byte order mark (BOM) is a Unicode character used to signal the endianness (byte order) of a text file or stream. Its code point is U+FEFF. BOM use is optional, and, if used, should appear at the start of the text stream. Beyond its specific use as a byte-order indicator, the BOM character may also indicate which of the several Unicode representations the text is encoded in.
The BOM is a funky-looking character that you sometimes find at the start of unicode streams, giving a clue what the encoding is. It's usually handles invisibly by the string-handling stuff in Java, so you must have confused it somehow, but without seeing your code, it's hard to see where.
You might be able to fix it trivially by manually stripping the BOM from the string before feeding it to javac
. It probably qualifies as whitespace, so try calling trim()
on the input String, and feeding the output of that to javac
.
.+,(.+)
Explanation:
.+,
will search for everything before the comma, including the comma.
(.+)
will search for everything after the comma, and depending on your regex environment,
\1
is the reference for the first parentheses captured group that you need, in this example, everything after the comma.
If using scala, try priv
+ tab
Kind of an embarrassing occurrence of this error for me, but if it helps the cause...
Make sure you have Ubuntu for desktop, part 1 of this wikihow:
http://www.wikihow.com/Install-Ubuntu-on-VirtualBox
A part I may or may not have skipped, along with part 4 (selecting the Ubuntu ISO as the CD Load)
Nobody's perfect :)
You could make use of the Javascript DOM API. In particular, look at the createElement() method.
You could create a re-usable function that will create an image like so...
function show_image(src, width, height, alt) {
var img = document.createElement("img");
img.src = src;
img.width = width;
img.height = height;
img.alt = alt;
// This next line will just add it to the <body> tag
document.body.appendChild(img);
}
Then you could use it like this...
<button onclick=
"show_image('http://google.com/images/logo.gif',
276,
110,
'Google Logo');">Add Google Logo</button>
As others have indicated, Process.Start()
is the way to go here. However, there are a few quirks. It's worth your time to read this blog post:
http://faithlife.codes/blog/2008/01/using_processstart_to_link_to/
In summary, some browsers cause it to throw an exception for no good reason, the function can block for a while on non-UI thread so you need to make sure it happens near the end of whatever other actions you might perform at the same time, and you might want to change the cursor appearance while waiting for the browser to open.
Did you import it? Importing matplotlib
is not enough.
>>> import matplotlib
>>> matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'pyplot'
but
>>> import matplotlib.pyplot
>>> matplotlib.pyplot
works.
pyplot is a submodule of matplotlib and not immediately imported when you import matplotlib.
The most common form of importing pyplot is
import matplotlib.pyplot as plt
Thus, your statements won't be too long, e.g.
plt.plot([1,2,3,4,5])
instead of
matplotlib.pyplot.plot([1,2,3,4,5])
And: pyplot
is not a function, it's a module! So don't call it, use the functions defined inside this module instead. See my example above
See here for more details. The default is none of private/public/protected, but a completely different access specification. It's not widely used, and I prefer to be much more specific in my access definitions.
I did not want to add style to <body>
tag and <html>
tag.
.quodrant{
width: 100%;
height: 100vh;
margin: 0;
padding: 0;
}
.qtop,
.qbottom{
width: 100%;
height: 50vh;
}
.quodrant1,
.quodrant2,
.quodrant3,
.quodrant4{
display: inline;
float: left;
width: 50%;
height: 100%;
}
.quodrant1{
top: 0;
left: 50vh;
background-color: red;
}
.quodrant2{
top: 0;
left: 0;
background-color: yellow;
}
.quodrant3{
top: 50vw;
left: 0;
background-color: blue;
}
.quodrant4{
top: 50vw;
left: 50vh;
background-color: green;
}
_x000D_
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link type="text/css" rel="stylesheet" href="main.css" />
</head>
<body>
<div class='quodrant'>
<div class='qtop'>
<div class='quodrant1'></div>
<div class='quodrant2'></div>
</div>
<div class='qbottom'>
<div class='quodrant3'></div>
<div class='quodrant4'></div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
_x000D_
Or making it looks nicer.
.quodrant{
width: 100%;
height: 100vh;
margin: 0;
padding: 0;
}
.qtop,
.qbottom{
width: 96%;
height: 46vh;
}
.quodrant1,
.quodrant2,
.quodrant3,
.quodrant4{
display: inline;
float: left;
width: 46%;
height: 96%;
border-radius: 30px;
margin: 2%;
}
.quodrant1{
background-color: #948be5;
}
.quodrant2{
background-color: #22e235;
}
.quodrant3{
background-color: #086e75;
}
.quodrant4{
background-color: #7cf5f9;
}
_x000D_
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link type="text/css" rel="stylesheet" href="main.css" />
</head>
<body>
<div class='quodrant'>
<div class='qtop'>
<div class='quodrant1'></div>
<div class='quodrant2'></div>
</div>
<div class='qbottom'>
<div class='quodrant3'></div>
<div class='quodrant4'></div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
_x000D_
NOTE: This answer is from 2011. It was a really good answer back then, but as of 2015, native HTML properties are supported by most browsers, so there's (usually) no need to implement such custom logic in JS. See Edi's answer and the docs.
Before the file is uploaded, you can check the file's extension using Javascript, and prevent the form being submitted if it doesn't match. The name of the file to be uploaded is stored in the "value" field of the form element.
Here's a simple example that only allows files that end in ".gif" to be uploaded:
<script type="text/javascript">
function checkFile() {
var fileElement = document.getElementById("uploadFile");
var fileExtension = "";
if (fileElement.value.lastIndexOf(".") > 0) {
fileExtension = fileElement.value.substring(fileElement.value.lastIndexOf(".") + 1, fileElement.value.length);
}
if (fileExtension.toLowerCase() == "gif") {
return true;
}
else {
alert("You must select a GIF file for upload");
return false;
}
}
</script>
<form action="upload.aspx" enctype="multipart/form-data" onsubmit="return checkFile();">
<input name="uploadFile" id="uploadFile" type="file" />
<input type="submit" />
</form>
However, this method is not foolproof. Sean Haddy is correct that you always want to check on the server side, because users can defeat your Javascript checking by turning off javascript, or editing your code after it arrives in their browser. Definitely check server-side in addition to the client-side check. Also I recommend checking for size server-side too, so that users don't crash your server with a 2 GB file (there's no way that I know of to check file size on the client side without using Flash or a Java applet or something).
However, checking client side before hand using the method I've given here is still useful, because it can prevent mistakes and is a minor deterrent to non-serious mischief.
Instead of using <hr>, you can one of the border of the enclosing block and display it as a horizontal line.
Here is a sample code:
The HTML:
<div class="title_block">
<h3>This is a header.</h3>
</div>
<p>Here is some sample paragraph text.<br>
This demonstrates that a horizontal line goes between the title and the paragraph.</p>
The CSS:
.title_block {
border-bottom: 1px solid #ddd;
padding-bottom: 5px;
margin-bottom: 5px;
}
Please run the below query, it doesn't requires STUFF and GROUP BY in your case:
Select
A.maskid
, A.maskname
, A.schoolid
, B.schoolname
, CAST((
SELECT T.maskdetail+','
FROM dbo.maskdetails T
WHERE A.maskid = T.maskid
FOR XML PATH(''))as varchar(max)) as maskdetail
FROM dbo.tblmask A
JOIN dbo.school B ON B.ID = A.schoolid
x = math.ceil(x * 100.0) / 100.0
This is BY FAR the easiest way to convert *.cer to *.pfx files:
Just download the portable certificate converter from DigiCert: https://www.digicert.com/util/pfx-certificate-management-utility-import-export-instructions.htm
Execute it, select a file and get your *.pfx!!
Function-instantiation is allowed inside and outside of functions. Inside those functions, just like variables, the nested functions are local and therefore cannot be obtained from the outside scope.
function foo() {
function bar() {
return 1;
}
return bar();
}
foo
manipulates bar
within itself. bar
cannot be touched from the outer scope unless it is defined in the outer scope.
So this will not work:
function foo() {
function bar() {
return 1;
}
}
bar(); // throws error: bar is not defined
You don't necessarily need to have the parameters inside the URL.
For instance, with:
$stateProvider
.state('home', {
url: '/',
views: {
'': {
templateUrl: 'home.html',
controller: 'MainRootCtrl'
},
},
params: {
foo: null,
bar: null
}
})
You will be able to send parameters to the state, using either:
$state.go('home', {foo: true, bar: 1});
// or
<a ui-sref="home({foo: true, bar: 1})">Go!</a>
Of course, if you reload the page once on the home
state, you will loose the state parameters, as they are not stored anywhere.
A full description of this behavior is documented here, under the params
row in the state(name, stateConfig)
section.
This optimized method create (or update an existing) array of pointers in *result and returns the number of elements in *count.
Use "max" to indicate the maximum number of strings you expect (when you specify an existing array or any other reaseon), else set it to 0
To compare against a list of delimiters, define delim as a char* and replace the line:
if (str[i]==delim) {
with the two following lines:
char *c=delim; while(*c && *c!=str[i]) c++;
if (*c) {
Enjoy
#include <stdlib.h>
#include <string.h>
char **split(char *str, size_t len, char delim, char ***result, unsigned long *count, unsigned long max) {
size_t i;
char **_result;
// there is at least one string returned
*count=1;
_result= *result;
// when the result array is specified, fill it during the first pass
if (_result) {
_result[0]=str;
}
// scan the string for delimiter, up to specified length
for (i=0; i<len; ++i) {
// to compare against a list of delimiters,
// define delim as a string and replace
// the next line:
// if (str[i]==delim) {
//
// with the two following lines:
// char *c=delim; while(*c && *c!=str[i]) c++;
// if (*c) {
//
if (str[i]==delim) {
// replace delimiter with zero
str[i]=0;
// when result array is specified, fill it during the first pass
if (_result) {
_result[*count]=str+i+1;
}
// increment count for each separator found
++(*count);
// if max is specified, dont go further
if (max && *count==max) {
break;
}
}
}
// when result array is specified, we are done here
if (_result) {
return _result;
}
// else allocate memory for result
// and fill the result array
*result=malloc((*count)*sizeof(char*));
if (!*result) {
return NULL;
}
_result=*result;
// add first string to result
_result[0]=str;
// if theres more strings
for (i=1; i<*count; ++i) {
// find next string
while(*str) ++str;
++str;
// add next string to result
_result[i]=str;
}
return _result;
}
Usage example:
#include <stdio.h>
int main(int argc, char **argv) {
char *str="JAN,FEB,MAR,APR,MAY,JUN,JUL,AUG,SEP,OCT,NOV,DEC";
char **result=malloc(6*sizeof(char*));
char **result2=0;
unsigned long count;
unsigned long count2;
unsigned long i;
split(strdup(str),strlen(str),',',&result,&count,6);
split(strdup(str),strlen(str),',',&result2,&count2,0);
if (result)
for (i=0; i<count; ++i) {
printf("%s\n",result[i]);
}
printf("\n");
if (result2)
for (i=0; i<count2; ++i) {
printf("%s\n", result2[i]);
}
return 0;
}
FragmentActivity
is part of the support library, while Activity
is the framework's default class. They are functionally equivalent.
You should always use FragmentActivity
and android.support.v4.app.Fragment
instead of the platform default Activity
and android.app.Fragment
classes. Using the platform defaults mean that you are relying on whatever implementation of fragments is used in the device you are running on. These are often multiple years old, and contain bugs that have since been fixed in the support library.
Use inline styles:
<div class="button" style="width:60px;height:100px;">This is a button</div>
Add namespace
using System.Configuration;
and in place of
ConfigurationSettings.AppSettings
you should use
ConfigurationManager.AppSettings
String path = ConfigurationManager.AppSettings["configFile"];
I don't use commands. You should be able to do this using the GUI:
Visual Studio\Projects\{your project}
folder. Select OK.I have also used following link as others have suggested you for bluetooth communication.
http://developer.android.com/guide/topics/connectivity/bluetooth.html
The thing is all you need is a class BluetoothChatService.java
this class has following threads:
Now when you call start function of the BluetoothChatService like:
mChatService.start();
It starts accept thread which means it will start looking for connection.
Now when you call
mChatService.connect(<deviceObject>,false/true);
Here first argument is device object that you can get from paired devices list or when you scan for devices you will get all the devices in range you can pass that object to this function and 2nd argument is a boolean to make secure or insecure connection.
connect
function will start connecting thread which will look for any device which is running accept thread.
When such a device is found both accept thread and connecting thread will call connected function in BluetoothChatService:
connected(mmSocket, mmDevice, mSocketType);
this method starts connected thread in both the devices:
Using this socket object connected thread obtains the input and output stream to the other device.
And calls read
function on inputstream in a while loop so that it's always trying read from other device so that whenever other device send a message this read function returns that message.
BluetoothChatService also has a write
method which takes byte[]
as input and calls write method on connected thread.
mChatService.write("your message".getByte());
write method in connected thread just write this byte data to outputsream of the other device.
public void write(byte[] buffer) {
try {
mmOutStream.write(buffer);
// Share the sent message back to the UI Activity
// mHandler.obtainMessage(
// BluetoothGameSetupActivity.MESSAGE_WRITE, -1, -1,
// buffer).sendToTarget();
} catch (IOException e) {
Log.e(TAG, "Exception during write", e);
}
}
Now to communicate between two devices just call write function on mChatService and handle the message that you will receive on the other device.
My all in one! (--01/09/2019 updated to deal with RStudio Console)
#' current script file (in full path)
#' @description current script file (in full path)
#' @examples
#' works with Rscript, source() or in RStudio Run selection, RStudio Console
#' @export
ez.csf <- function() {
# http://stackoverflow.com/a/32016824/2292993
cmdArgs = commandArgs(trailingOnly = FALSE)
needle = "--file="
match = grep(needle, cmdArgs)
if (length(match) > 0) {
# Rscript via command line
return(normalizePath(sub(needle, "", cmdArgs[match])))
} else {
ls_vars = ls(sys.frames()[[1]])
if ("fileName" %in% ls_vars) {
# Source'd via RStudio
return(normalizePath(sys.frames()[[1]]$fileName))
} else {
if (!is.null(sys.frames()[[1]]$ofile)) {
# Source'd via R console
return(normalizePath(sys.frames()[[1]]$ofile))
} else {
# RStudio Run Selection
# http://stackoverflow.com/a/35842176/2292993
pth = rstudioapi::getActiveDocumentContext()$path
if (pth!='') {
return(normalizePath(pth))
} else {
# RStudio Console
tryCatch({
pth = rstudioapi::getSourceEditorContext()$path
pth = normalizePath(pth)
}, error = function(e) {
# normalizePath('') issues warning/error
pth = ''
}
)
return(pth)
}
}
}
}
}
It seems strange that you would write arrays without commas (is that a MATLAB syntax?)
Have you tried going through NumPy's documentation on multi-dimensional arrays?
It seems NumPy has a "Python-like" append method to add items to a NumPy n-dimensional array:
>>> p = np.array([[1,2],[3,4]])
>>> p = np.append(p, [[5,6]], 0)
>>> p = np.append(p, [[7],[8],[9]],1)
>>> p
array([[1, 2, 7], [3, 4, 8], [5, 6, 9]])
It has also been answered already...
From the documentation for MATLAB users:
You could use a matrix constructor which takes a string in the form of a matrix MATLAB literal:
mat("1 2 3; 4 5 6")
or
matrix("[1 2 3; 4 5 6]")
Please give it a try and tell me how it goes.
Here is the typescript version too:
JSONTryParse(input: any) {
try {
//check if the string exists
if (input) {
var o = JSON.parse(input);
//validate the result too
if (o && o.constructor === Object) {
return o;
}
}
}
catch (e: any) {
}
return false;
};
If Image folder location is public/assets/img/default.jpg.
You can try in view
<img src="{{ URL::to('/assets/img/default.jpg') }}">
Oh I just have followed the solution Ignacio Vazquez-Abrams has suggest which is install tk-dev before building the python. (Building the Python-3.6.1 from source on Ubuntu 16.04.)
There was pre-compiled objects and binaries I have had build yesterday though, I didn't clean up the objects and just build again on the same build path. And it works beautifully.
sudo apt install tk-dev
(On the python build path)
(No need to conduct 'make clean')
./configure
make
sudo make install
That's it!
I needed to run this command
sudo lsof -i :80 # checks port 8080
Then i got
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
acwebseca 312 root 36u IPv4 0x34ae935da20560c1 0t0 TCP 192.168.1.3:50585->104.25.53.12:http (ESTABLISHED)
show which service is using the PID
ps -ef 312
Then I got this
UID PID PPID C STIME TTY TIME CMD
0 312 58 0 9:32PM ?? 0:02.70 /opt/cisco/anyconnect/bin/acwebsecagent -console
To uninstall cisco web security agent run
sudo /opt/cisco/anyconnect/bin/websecurity_uninstall.sh
credits to: http://tobyaw.livejournal.com/315396.html
Need to login with respective github username
and password
To Clear the username and password in windows
Control Panel\User Accounts\Credential Manager
Edit the windows Credential
Remove the existing user and now go to command prompt write the push command it shows a github pop-up to enter the username
/email
and password
.
Now we able to push the code after switching the user.
You need the sleep
method of the Thread
class.
public static void sleep (long time)
Causes the thread which sent this message to sleep for the given interval of time (given in milliseconds). The precision is not guaranteed - the Thread may sleep more or less than requested.
Parameters
time
The time to sleep in milliseconds.
I got null from the Cursor
.
Then found a solution to convert the Uri
into Bitmap
that works perfectly.
Here is the solution that works for me:
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
{
if (resultCode == Activity.RESULT_OK) {
if (requestCode == YOUR_REQUEST_CODE) {
if (data != null) {
if (data.getData() != null) {
Uri contentURI = data.getData();
ex_one.setImageURI(contentURI);
Log.d(TAG, "onActivityResult: " + contentURI.toString());
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), contentURI);
} catch (IOException e) {
e.printStackTrace();
}
} else {
if (data.getClipData() != null) {
ClipData mClipData = data.getClipData();
ArrayList<Uri> mArrayUri = new ArrayList<Uri>();
for (int i = 0; i < mClipData.getItemCount(); i++) {
ClipData.Item item = mClipData.getItemAt(i);
Uri uri = item.getUri();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), uri);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}
}
}
You don't even need numpy or scipy...
>>> a = [1, 2, 3, 4, 5, 6]
>>> print(sum(a) / len(a))
3
Use Dictionary - it uses hashtable but is typesafe.
Also, your Java code for
int a = map.get(key);
//continue with your logic
will be best coded in C# this way:
int a;
if(dict.TryGetValue(key, out a)){
//continue with your logic
}
This way, you can scope the need of variable "a" inside a block and it is still accessible outside the block if you need it later.
git reset --hard origin/master
says: throw away all my staged and unstaged changes, forget everything on my current local branch and make it exactly the same as origin/master
.
You probably wanted to ask this before you ran the command. The destructive nature is hinted at by using the same words as in "hard reset".
This works for spanish operation system.
Script accepts two parameters:
script.bat listofurls.txt output.txt
@echo off
setlocal enabledelayedexpansion
set OUTPUT_FILE=%2
>nul copy nul %OUTPUT_FILE%
for /f %%i in (%1) do (
set SERVER_ADDRESS=No se pudo resolver el host
for /f "tokens=1,2,3,4,5" %%v in ('ping -a -n 1 %%i ^&^& echo SERVER_IS_UP')
do (
if %%v==Haciendo set SERVER_ADDRESS=%%z
if %%v==Respuesta set SERVER_ADDRESS=%%x
if %%v==SERVER_IS_UP (set SERVER_STATE=UP) else (set SERVER_STATE=DOWN)
)
echo %%i [!SERVER_ADDRESS::=!] is !SERVER_STATE! >>%OUTPUT_FILE%
echo %%i [!SERVER_ADDRESS::=!] is !SERVER_STATE!
)
byte[] base64EncodedStringBytes = Encoding.ASCII.GetBytes(Convert.ToBase64String(binaryData))
That's something controlled by your terminal, not by printf
.
printf
simply sends a \t
to the output stream (which can be a tty, a file etc), it doesn't send a number of spaces.
I think you are looking for ToText(CCur(@Price}/{ValuationReport.YestPrice}*100-100))
You can use CCur
to convert numbers or string to Curency formats. CCur(number)
or CCur(string)
I think this may be what you are looking for,
Replace (ToText(CCur({field})),"$" , "")
that will give the parentheses for negative numbers
It is a little hacky, but I'm not sure CR is very kind in the ways of formatting
print("<pre>".print_r($data,true)."</pre>");
You get that error because you don't have the public key of the person who signed the message.
gpg
should have given you a message containing the ID of the key that was used to sign it. Obtain the public key from the person who encrypted the file and import it into your keyring (gpg2 --import key.asc
); you should be able to verify the signature after that.
If the sender submitted its public key to a keyserver (for instance, https://pgp.mit.edu/), then you may be able to import the key directly from the keyserver:
gpg2 --keyserver https://pgp.mit.edu/ --search-keys <sender_name_or_address>
Let's assume you have install
target, which is a very common in makefiles. If you do not use .PHONY
, and a file named install
exists in the same directory as the Makefile, then make install
will do nothing. This is because Make interprets the rule to mean "execute such-and-such recipe to create the file named install
". Since the file is already there, and its dependencies didn't change, nothing will be done.
However if you make the install
target PHONY, it will tell the make tool that the target is fictional, and that make should not expect it to create the actual file. Hence it will not check whether the install
file exists, meaning: a) its behavior will not be altered if the file does exist and b) extra stat()
will not be called.
Generally all targets in your Makefile which do not produce an output file with the same name as the target name should be PHONY. This typically includes all
, install
, clean
, distclean
, and so on.
get radio buttons value and matches with each if it is 3 then disabled checkbox and textbox
.
$("#radiobutt input[type=radio]").click(function () {_x000D_
$(this).each(function(index){_x000D_
//console.log($(this).val());_x000D_
if($(this).val()==3) { //get radio buttons value and matched if 3 then disabled._x000D_
$("#textbox_field").attr("disabled", "disabled"); _x000D_
$("#checkbox_field").attr("disabled", "disabled"); _x000D_
}_x000D_
else {_x000D_
$("#textbox_field").removeAttr("disabled"); _x000D_
$("#checkbox_field").removeAttr("disabled"); _x000D_
}_x000D_
});_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>_x000D_
<span id="radiobutt">_x000D_
<input type="radio" name="groupname" value="1" />_x000D_
<input type="radio" name="groupname" value="2" />_x000D_
<input type="radio" name="groupname" value="3" />_x000D_
</span>_x000D_
<div>_x000D_
<input type="text" id="textbox_field" />_x000D_
<input type="checkbox" id="checkbox_field" />_x000D_
</div>
_x000D_
answer = True
myvar = "the answer is " + str(answer)
Python does not do implicit casting, as implicit casting can mask critical logic errors. Just cast answer to a string itself to get its string representation ("True"), or use string formatting like so:
myvar = "the answer is %s" % answer
Note that answer must be set to True
(capitalization is important).
As others have said, some email programs will not read the css styles. If you already have a web email written up you can use the following tool from zurb to inline all of your styles:
http://zurb.com/ink/inliner.php
This comes in extremely handy when using templates like those mentioned above from mailchimp, campaign monitor, etc. as they, as you have found, will not work in some email programs. This tool leaves your style section for the mail programs that will read it and puts all the styles inline to get more universal readability in the format that you wanted.
This will display the date according to user's current locale:
To return date and time:
import java.text.DateFormat;
import java.util.Date;
Date date = new Date();
DateFormat df = DateFormat.getDateTimeInstance();
String myDate = df.format(date);
Dec 31, 1969 7:00:02 PM
To return date only, use:
DateFormat.getDateInstance()
Dec 31, 1969
I found this problem too. Because centos service depend on multi-user.target for none desktop Cenots 7.2. so I delete multi-user.target from my .service file. It had missed.
1- Add a view to the content view of your cell.
2- Right click your cell.
3- Make the added view as "selectedBackgroundView"
Here is improved @lucasjones answer. I included improvements mentioned in comment section after his answer. I hope someone will find this useful.
public static string[] GetTypePropertyNames(object classObject, BindingFlags bindingFlags)
{
if (classObject == null)
{
throw new ArgumentNullException(nameof(classObject));
}
var type = classObject.GetType();
var propertyInfos = type.GetProperties(bindingFlags);
return propertyInfos.Select(propertyInfo => propertyInfo.Name).ToArray();
}
In Android simply edit your styles.xml file under Resources\values adding this:
<resources>
<style name="MyTheme" parent="android:style/Theme.Material.Light.DarkActionBar">
<item name="android:colorPressedHighlight">@color/ListViewSelected</item>
<item name="android:colorLongPressedHighlight">@color/ListViewHighlighted</item>
<item name="android:colorFocusedHighlight">@color/ListViewSelected</item>
<item name="android:colorActivatedHighlight">@color/ListViewSelected</item>
<item name="android:activatedBackgroundIndicator">@color/ListViewSelected</item>
</style>
<color name="ListViewSelected">#96BCE3</color>
<color name="ListViewHighlighted">#E39696</color>
</resources>
When one of my VB.NET classes has all shared members I either convert it to a Module with a matching (or otherwise appropriate) namespace or I make the class not inheritable and not constructable:
Public NotInheritable Class MyClass1
Private Sub New()
'Contains only shared members.
'Private constructor means the class cannot be instantiated.
End Sub
End Class
Craig Stuntz has written an extensive (in my opinion) blog post on troubleshooting this exact error message, I personally would start there.
The following res:
(resource) references need to point to your model.
<add name="Entities" connectionString="metadata=
res://*/Models.WraithNath.co.uk.csdl|
res://*/Models.WraithNath.co.uk.ssdl|
res://*/Models.WraithNath.co.uk.msl;
Make sure each one has the name of your .edmx file after the "*/", with the "edmx" changed to the extension for that res (.csdl, .ssdl, or .msl).
It also may help to specify the assembly rather than using "//*/".
Worst case, you can check everything (a bit slower but should always find the resource) by using
<add name="Entities" connectionString="metadata=
res://*/;provider= <!-- ... -->
I have had the same problem, but none of the answers quite gave a step by step of what I needed to do. This error happens because your socket file has not been created yet. All you have to do is:
/tmp/mysql.sock
is created, to do that you run: mysql server start
config/database.yml
file and add/edit the socket: /tmp/mysql.sock
entryrake:dbmigrate
once again and everything should workout fineJust use...
var stringContent = new StringContent(jObject.ToString());
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);
Or,
var stringContent = new StringContent(JsonConvert.SerializeObject(model), Encoding.UTF8, "application/json");
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);
DFS APPROACH WITH A CONDITION(parent != next node) Let's see the code and then understand what's going on :
bool Graph::isCyclicUtil(int v, bool visited[], int parent)
{
// Mark the current node as visited
visited[v] = true;
// Recur for all the vertices adjacent to this vertex
list<int>::iterator i;
for (i = adj[v].begin(); i != adj[v].end(); ++i)
{
// If an adjacent is not visited, then recur for that adjacent
if (!visited[*i])
{
if (isCyclicUtil(*i, visited, v))
return true;
}
// If an adjacent is visited and not parent of current vertex,
// then there is a cycle.
else if (*i != parent)
return true;
}
return false;
}
The above code explains itself but I will try to explain one condition i.e *i != parent Here if suppose graph is
1--2
Then when we are at 1 and goes to 2, the parent for 2 becomes 1 and when we go back to 1 as 1 is in adj matrix of 2 then since next vertex 1 is also the parent of 2 Therefore cycle will not be detected for the immediate parent in this DFS approach. Hence Code works fine