Posting because even though this question is 7 years old, I have yet to see an answer that satisfies the original criteria:
I don’t want them “split up” but “merged”, more like the SQL group by method.
I originally came to this post because I wanted to find a method of reducing an array of objects (i.e., the data structure created when you read from a csv, for example) and aggregate by given indices to produce the same data structure. The return value I was looking for was another array of objects, not a nested object or map like I've seen proposed here.
The following function takes a dataset (array of objects), a list of indices (array), and a reducer function, and returns the result of applying the reducer function on the indices as an array of objects.
function agg(data, indices, reducer) {
// helper to create unique index as an array
function getUniqueIndexHash(row, indices) {
return indices.reduce((acc, curr) => acc + row[curr], "");
}
// reduce data to single object, whose values will be each of the new rows
// structure is an object whose values are arrays
// [{}] -> {{}}
// no operation performed, simply grouping
let groupedObj = data.reduce((acc, curr) => {
let currIndex = getUniqueIndexHash(curr, indices);
// if key does not exist, create array with current row
if (!Object.keys(acc).includes(currIndex)) {
acc = {...acc, [currIndex]: [curr]}
// otherwise, extend the array at currIndex
} else {
acc = {...acc, [currIndex]: acc[currIndex].concat(curr)};
}
return acc;
}, {})
// reduce the array into a single object by applying the reducer
let reduced = Object.values(groupedObj).map(arr => {
// for each sub-array, reduce into single object using the reducer function
let reduceValues = arr.reduce(reducer, {});
// reducer returns simply the aggregates - add in the indices here
// each of the objects in "arr" has the same indices, so we take the first
let indexObj = indices.reduce((acc, curr) => {
acc = {...acc, [curr]: arr[0][curr]};
return acc;
}, {});
reduceValues = {...indexObj, ...reduceValues};
return reduceValues;
});
return reduced;
}
I'll create a reducer that returns count(*) and sum(Value):
reducer = (acc, curr) => {
acc.count = 1 + (acc.count || 0);
acc.value = +curr.Value + (acc.value|| 0);
return acc;
}
finally, applying the agg function with our reducer to the original dataset yields an array of objects with the appropriate aggregations applied:
agg(tasks, ["Phase"], reducer);
// yields:
Array(2) [
0: Object {Phase: "Phase 1", count: 4, value: 50}
1: Object {Phase: "Phase 2", count: 4, value: 130}
]
agg(tasks, ["Phase", "Step"], reducer);
// yields:
Array(4) [
0: Object {Phase: "Phase 1", Step: "Step 1", count: 2, value: 15}
1: Object {Phase: "Phase 1", Step: "Step 2", count: 2, value: 35}
2: Object {Phase: "Phase 2", Step: "Step 1", count: 2, value: 55}
3: Object {Phase: "Phase 2", Step: "Step 2", count: 2, value: 75}
]
This will print out the query:
$query = "SELECT order_date, no_of_items, shipping_charge, SUM(total_order_amount) as test FROM `orders` WHERE DATE(`order_date`) = DATE(NOW()) GROUP BY DATE(`order_date`)";
$dave= mysql_query($query) or die(mysql_error());
print $query;
This will print out the results:
$query = "SELECT order_date, no_of_items, shipping_charge, SUM(total_order_amount) as test FROM `orders` WHERE DATE(`order_date`) = DATE(NOW()) GROUP BY DATE(`order_date`)";
$dave= mysql_query($query) or die(mysql_error());
while($row = mysql_fetch_assoc($dave)){
foreach($row as $cname => $cvalue){
print "$cname: $cvalue\t";
}
print "\r\n";
}
date +%Y:%m:%d|awk -vFS=":" -vOFS=":" '{$3=$3-1;print}'
2009:11:9
From a phylosophic point of view :
An abstract class represents an "is a" relationship. Lets say I have fruits, well I would have a Fruit abstract class that shares common responsabilities and common behavior.
An interface represents a "should do" relationship. An interface, in my opinion (which is the opinion of a junior dev), should be named by an action, or something close to an action, (Sorry, can't find the word, I'm not an english native speaker) lets say IEatable. You know it can be eaten, but you don't know what you eat.
From a coding point of view :
If your objects have duplicated code, it is an indication that they have common behavior, which means you might need an abstract class to reuse the code, which you cannot do with an interface.
Another difference is that an object can implement as many interfaces as you need, but you can only have one abstract class because of the "diamond problem" (check out here to know why! http://en.wikipedia.org/wiki/Multiple_inheritance#The_diamond_problem)
I probably forget some points, but I hope it can clarify things.
PS : The "is a"/"should do" is brought by Vivek Vermani's answer, I didn't mean to steal his answer, just to reuse the terms because I liked them!
If you're not opposed to using a libray, http://underscorejs.org/ has an intersection method, which can simplify this:
var _ = require('underscore');
var target = [ 'apple', 'orange', 'banana'];
var fruit2 = [ 'apple', 'orange', 'mango'];
var fruit3 = [ 'mango', 'lemon', 'pineapple'];
var fruit4 = [ 'orange', 'lemon', 'grapes'];
console.log(_.intersection(target, fruit2)); //returns [apple, orange]
console.log(_.intersection(target, fruit3)); //returns []
console.log(_.intersection(target, fruit4)); //returns [orange]
The intersection function will return a new array with the items that it matched and if not matches it returns empty array.
For naming template parameters, typename
and class
are equivalent. §14.1.2:
There is no semantic difference between class and typename in a template-parameter.
typename
however is possible in another context when using templates - to hint at the compiler that you are referring to a dependent type. §14.6.2:
A name used in a template declaration or definition and that is dependent on a template-parameter is assumed not to name a type unless the applicable name lookup finds a type name or the name is qualified by the keyword typename.
Example:
typename some_template<T>::some_type
Without typename
the compiler can't tell in general whether you are referring to a type or not.
The params come from the user's browser when they request the page. For an HTTP GET request, which is the most common, the params are encoded in the url. For example, if a user's browser requested
http://www.example.com/?foo=1&boo=octopus
then params[:foo]
would be "1" and params[:boo]
would be "octopus".
In HTTP/HTML, the params are really just a series of key-value pairs where the key and the value are strings, but Ruby on Rails has a special syntax for making the params be a hash with hashes inside. For example, if the user's browser requested
http://www.example.com/?vote[item_id]=1&vote[user_id]=2
then params[:vote]
would be a hash, params[:vote][:item_id]
would be "1" and params[:vote][:user_id]
would be "2".
The Ruby on Rails params are the equivalent of the $_REQUEST array in PHP.
Generally it is that you are inserting a value that is greater than the maximum allowed value. Ex, data column can only hold up to 200 characters, but you are inserting 201-character string
No. Only object references can be null, not primitives.
solution
from operator import itemgetter
from typing import List, Dict, Union
def subdict(d: Union[Dict, List], columns: List[str]) -> Union[Dict, List[Dict]]:
"""Return a dict or list of dicts with subset of
columns from the d argument.
"""
getter = itemgetter(*columns)
if isinstance(d, list):
result = []
for subset in map(getter, d):
record = dict(zip(columns, subset))
result.append(record)
return result
elif isinstance(d, dict):
return dict(zip(columns, getter(d)))
raise ValueError('Unsupported type for `d`')
examples of use
# pure dict
d = dict(a=1, b=2, c=3)
print(subdict(d, ['a', 'c']))
>>> In [5]: {'a': 1, 'c': 3}
# list of dicts
d = [
dict(a=1, b=2, c=3),
dict(a=2, b=4, c=6),
dict(a=4, b=8, c=12),
]
print(subdict(d, ['a', 'c']))
>>> In [5]: [{'a': 1, 'c': 3}, {'a': 2, 'c': 6}, {'a': 4, 'c': 12}]
Everyone is right: stick with POST for non-idempotent requests.
What about using both an URI query string and request content? Well it's valid HTTP (see note 1), so why not?!
It is also perfectly logical: URLs, including their query string part, are for locating resources. Whereas HTTP method verbs (POST - and its optional request content) are for specifying actions, or what to do with resources. Those should be orthogonal concerns. (But, they are not beautifully orthogonal concerns for the special case of ContentType=application/x-www-form-urlencoded, see note 2 below.)
Note 1: HTTP specification (1.1) does not state that query parameters and content are mutually exclusive for a HTTP server that accepts POST or PUT requests. So any server is free to accept both. I.e. if you write the server there's nothing to stop you choosing to accept both (except maybe an inflexible framework). Generally, the server can interpret query strings according to whatever rules it wants. It can even interpret them with conditional logic that refers to other headers like Content-Type too, which leads to Note 2:
Note 2: if a web browser is the primary way people are accessing your web application, and application/x-www-form-urlencoded is the Content-Type they are posting, then you should follow the rules for that Content-Type. And the rules for application/x-www-form-urlencoded are much more specific (and frankly, unusual): in this case you must interpret the URI as a set of parameters, and not a resource location. [This is the same point of usefulness Powerlord raised; that it may be hard to use web forms to POST content to your server. Just explained a little differently.]
Note 3: what are query strings originally for? RFC 3986 defines HTTP query strings as an URI part that works as a non-hierarchical way of locating a resource.
In case readers asking this question wish to ask what is good RESTful architecture: the RESTful architecture pattern doesn't require URI schemes to work a specific way. RESTful architecture concerns itself with other properties of the system, like cacheability of resources, the design of the resources themselves (their behavior, capabilities, and representations), and whether idempotence is satisfied. Or in other words, achieving a design which is highly compatible with HTTP protocol and its set of HTTP method verbs. :-) (In other words, RESTful architecture is not very presciptive with how the resources are located.)
Final note: sometimes query parameters get used for yet other things, which are neither locating resources nor encoding content. Ever seen a query parameter like 'PUT=true' or 'POST=true'? These are workarounds for browsers that don't allow you to use PUT and POST methods. While such parameters are seen as part of the URL query string (on the wire), I argue that they are not part of the URL's query in spirit.
A simple solution that could work in some cases is to create and $compile a wrapper and then append your original element to it.
Something like...
link: function(scope, elem, attr){
var wrapper = angular.element('<div tooltip></div>');
elem.before(wrapper);
$compile(wrapper)(scope);
wrapper.append(elem);
}
This solution has the advantage that it keeps things simple by not recompiling the original element.
This wouldn't work if any of the added directive's require
any of the original element's directives or if the original element has absolute positioning.
The value of a button element isn't the displayed text, contrary to what happens to input
elements of type button.
You can do this :
b.appendChild(document.createTextNode('test value'));
Simple read loop use this code
var resx = ResourcesName.ResourceManager.GetResourceSet(CultureInfo.CurrentUICulture, false, false);
foreach (DictionaryEntry dictionaryEntry in resx)
{
Console.WriteLine("Key: " + dictionaryEntry.Key);
Console.WriteLine("Val: " + dictionaryEntry.Value);
}
One major difference between Sequelize and Persistence.js is that the former supports a STRING
datatype, i.e. VARCHAR(255)
. I felt really uncomfortable making everything TEXT
.
When I did just a remove the option remained in the ddl on the view, but was gone in the html (if u inspect the page)
$("#ddlSelectList option[value='2']").remove(); //removes the option with value = 2
$('#ddlSelectList').val('').trigger('chosen:updated'); //refreshes the drop down list
Config file:
worker_processes 4; # 2 * Number of CPUs
events {
worker_connections 19000; # It's the key to high performance - have a lot of connections available
}
worker_rlimit_nofile 20000; # Each connection needs a filehandle (or 2 if you are proxying)
# Total amount of users you can serve = worker_processes * worker_connections
more info: Optimizing nginx for high traffic loads
The initial question has been posted quite some time ago and in the meantime Debian has made huge headway in the area of multiarch support.
Multiarch is a great achievement for cross compilation!
In a nutshell the following steps are required to leverage multiarch for Raspbian Jessie cross compilation:
Since this is a lot of work I have automated the above setup. You can read about it here:
In SQL Server 2016 SSMS expand 'DATABASNAME' > expand 'SECURITY' > expand 'SCHEMA' ; right click 'SCHEMAS' from the popup left click 'NEW SCHEMAS...' add the name on the window that opens and add an owner i.e dbo click 'OK' button
you can use below code to get email address after ? in the URL
<?php_x000D_
if (isset($_GET['email'])) {_x000D_
echo $_GET['email'];_x000D_
}
_x000D_
Does not work for multidimensional arrays, because references are used here.
import numpy as np
# swaps
data = np.random.random(2)
print(data)
data[0], data[1] = data[1], data[0]
print(data)
# does not swap
data = np.random.random((2, 2))
print(data)
data[0], data[1] = data[1], data[0]
print(data)
See also Swap slices of Numpy arrays
iText is a great Java PDF library. They also have an API for creating barcodes. You don't need to be creating a PDF to use it.
This page has the details on creating barcodes. Here is an example from that site:
BarcodeEAN codeEAN = new BarcodeEAN();
codeEAN.setCodeType(codeEAN.EAN13);
codeEAN.setCode("9780201615883");
Image imageEAN = codeEAN.createImageWithBarcode(cb, null, null);
The biggest thing you will need to determine is what type of barcode you need. There are many different barcode formats and iText does support a lot of them. You will need to know what format you need before you can determine if this API will work for you.
Here is your answer:
There are different category for inputType
so I used for pssword is textPaswword
<EditText
android:inputType="textPassword"
android:id="@+id/passwor"
android:textColorHint="#ffffff"
android:layout_marginRight="15dp"
android:layout_marginLeft="15dp"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:hint="********"
/>
Works starting with windows XP, not available in win 2000 or lower:
This is the quickest way to do it:
Process.Start("shutdown","/s /t 0");
Otherwise use P/Invoke or WMI like others have said.
Edit: how to avoid creating a window
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
You can use JSON.stringify(object)
with an object and I just wrote a function that'll recursively convert an array to an object, like this JSON.stringify(convArrToObj(array))
, which is the following code (more detail can be found on this answer):
// Convert array to object
var convArrToObj = function(array){
var thisEleObj = new Object();
if(typeof array == "object"){
for(var i in array){
var thisEle = convArrToObj(array[i]);
thisEleObj[i] = thisEle;
}
}else {
thisEleObj = array;
}
return thisEleObj;
}
To make it more generic, you can override the JSON.stringify
function and you won't have to worry about it again, to do this, just paste this at the top of your page:
// Modify JSON.stringify to allow recursive and single-level arrays
(function(){
// Convert array to object
var convArrToObj = function(array){
var thisEleObj = new Object();
if(typeof array == "object"){
for(var i in array){
var thisEle = convArrToObj(array[i]);
thisEleObj[i] = thisEle;
}
}else {
thisEleObj = array;
}
return thisEleObj;
};
var oldJSONStringify = JSON.stringify;
JSON.stringify = function(input){
return oldJSONStringify(convArrToObj(input));
};
})();
And now JSON.stringify
will accept arrays
or objects
! (link to jsFiddle with example)
Edit:
Here's another version that's a tad bit more efficient, although it may or may not be less reliable (not sure -- it depends on if JSON.stringify(array)
always returns []
, which I don't see much reason why it wouldn't, so this function should be better as it does a little less work when you use JSON.stringify
with an object
):
(function(){
// Convert array to object
var convArrToObj = function(array){
var thisEleObj = new Object();
if(typeof array == "object"){
for(var i in array){
var thisEle = convArrToObj(array[i]);
thisEleObj[i] = thisEle;
}
}else {
thisEleObj = array;
}
return thisEleObj;
};
var oldJSONStringify = JSON.stringify;
JSON.stringify = function(input){
if(oldJSONStringify(input) == '[]')
return oldJSONStringify(convArrToObj(input));
else
return oldJSONStringify(input);
};
})();
Add to pom.xml
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
If you use EventBus, it is probably a far more simpler solution :
In your Fragment :
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
EventBus.getDefault().register(this);
}
@Override
public void onDetach() {
super.onDetach();
EventBus.getDefault().unregister(this);
}
// This method will be called when a MessageEvent is posted
public void onEvent(BackPressedMessage type){
getSupportFragmentManager().popBackStack();
}
and in your Activity class you can define :
@Override
public void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
@Override
public void onStop() {
EventBus.getDefault().unregister(this);
super.onStop();
}
// This method will be called when a MessageEvent is posted
public void onEvent(BackPressedMessage type){
super.onBackPressed();
}
@Override
public void onBackPressed() {
EventBus.getDefault().post(new BackPressedMessage(true));
}
BackPressedMessage.java is just a POJO object
This is super clean and there is no interface/implementation hassle.
I think the easiest way is to add another div, in the same place as the iframe, then
make its z-index
bigger than the iframe container, so you can easly just style your own div. If you need to click on it, just use pointer-events:none
on your own div, so the iframe would be working in case you need to click on it ;)
I hope It will help someone ;)
Do you mean include javascript variable values in the query string of the URL?
Yes:
window.location.href = "http://www.gorissen.info/Pierre/maps/googleMapLocation.php?lat="+var1+"&lon="+var2+"&setLatLon="+varEtc;
This has just happened to me, and the reason was none of the reasons above. I was using the jQuery command getJSON and adding callback=?
to use JSONP (as I needed to go cross-domain), and returning the JSON code {"foo":"bar"}
and getting the error.
This is because I should have included the callback data, something like jQuery17209314005577471107_1335958194322({"foo":"bar"})
Here is the PHP code I used to achieve this, which degrades if JSON (without a callback) is used:
$ret['foo'] = "bar";
finish();
function finish() {
header("content-type:application/json");
if ($_GET['callback']) {
print $_GET['callback']."(";
}
print json_encode($GLOBALS['ret']);
if ($_GET['callback']) {
print ")";
}
exit;
}
Hopefully that will help someone in the future.
You can either quote it like your Windows example above, or escape the spaces with backslashes:
"/foo folder with space/foo" --help
/foo\ folder\ with\ space/foo --help
I just spent several days checking parameters because I have to pass 60 to a stored procedure. It turns out that the one of the variable names (which I load into a list and pass to the Oracle Write method I created) had a space in the name at the end. When comparing to the variables in the stored procedure they were the same, but in the editor I used to compare them, I didnt notice the extra space. Drove me crazy for the last 4 days trying everything I could find, and changing even the .net Oracle driver. Just wanted to throw that out here so it can help someone else. We tend to concentrate on the characters and ignore the spaces. . .
Doxygen or Sandcastle help file builder are the primary tools that will extract XML documentation into HTML (and other forms) of external documentation.
Note that you can combine these documentation exporters with documentation generators - as you've discovered, Resharper has some rudimentary helpers, but there are also much more advanced tools to do this specific task, such as GhostDoc (for C#/VB code with XML documentation) or my addin Atomineer Pro Documentation (for C#, C++/CLI, C++, C, VB, Java, JavaScript, TypeScript, JScript, PHP, Unrealscript code containing XML, Doxygen, JavaDoc or Qt documentation).
This is what Array#map are good at
var arr = oFullResponse.results.map(obj => ({
key: obj.label,
sortable: true,
resizeable: true
}))
This is FAQ 7.10. Others have shown how to apply this to a single column in a data frame, or to multiple columns in a data frame. But this is really treating the symptom, not curing the cause.
A better approach is to use the colClasses
argument to read.table
and related functions to tell R that the column should be numeric so that it never creates a factor and creates numeric. This will put in NA
for any values that do not convert to numeric.
Another better option is to figure out why R does not recognize the column as numeric (usually a non numeric character somewhere in that column) and fix the original data so that it is read in properly without needing to create NA
s.
Best is a combination of the last 2, make sure the data is correct before reading it in and specify colClasses
so R does not need to guess (this can speed up reading as well).
SHIFTV puts you in select lines mode. Then "*y yanks the currently selected lines to the *
register which is the clipboard. There are quite a few different registers, for different purposes. See the section on selection and drop registers
for details on the differences between *
and +
registers on Windows and Linux.
Okay: weird syntax!
var el: HTMLElement = document.getElementById('content');
fixes the problem. I wonder why the example didn't do this in the first place?
complete code:
class Greeter {
element: HTMLElement;
span: HTMLElement;
timerToken: number;
constructor (element: HTMLElement) {
this.element = element;
this.element.innerText += "The time is: ";
this.span = document.createElement('span');
this.element.appendChild(this.span);
this.span.innerText = new Date().toUTCString();
}
start() {
this.timerToken = setInterval(() => this.span.innerText = new Date().toUTCString(), 500);
}
stop() {
clearTimeout(this.timerToken);
}
}
window.onload = () => {
var el: HTMLElement = document.getElementById('content');
var greeter = new Greeter(el);
greeter.start();
};
You don't lose the delimiters, the cells are separated by tabs (\t
) and rows by newlines (\n
) which might not be visible in the form. Try it yourself: copy content from Excel to Notepad, and you'll see your cells nicely lined up. It's easy then to split the fields by tabs and replace them with something else, this way you can build even a table from them. Here's a example using jQuery:
var data = $('input[name=excel_data]').val();
var rows = data.split("\n");
var table = $('<table />');
for(var y in rows) {
var cells = rows[y].split("\t");
var row = $('<tr />');
for(var x in cells) {
row.append('<td>'+cells[x]+'</td>');
}
table.append(row);
}
// Insert into DOM
$('#excel_table').html(table);
So in essence, this script creates an HTML table from pasted Excel data.
The standalone
declaration is a way of telling the parser to ignore any markup declarations in the DTD. The DTD is thereafter used for validation only.
As an example, consider the humble <img>
tag. If you look at the XHTML 1.0 DTD, you see a markup declaration telling the parser that <img>
tags must be EMPTY and possess src
and alt
attributes. When a browser is going through an XHTML 1.0 document and finds an <img>
tag, it should notice that the DTD requires src
and alt
attributes and add them if they are not present. It will also self-close the <img>
tag since it is supposed to be EMPTY. This is what the XML specification means by "markup declarations can affect the content of the document." You can then use the standalone
declaration to tell the parser to ignore these rules.
Whether or not your parser actually does this is another question, but a standards-compliant validating parser (like a browser) should.
Note that if you do not specify a DTD, then the standalone declaration "has no meaning," so there's no reason to use it unless you also specify a DTD.
In general the point of the SettingWithCopyWarning
is to show users (and especially new users) that they may be operating on a copy and not the original as they think. There are false positives (IOW if you know what you are doing it could be ok). One possibility is simply to turn off the (by default warn) warning as @Garrett suggest.
Here is another option:
In [1]: df = DataFrame(np.random.randn(5, 2), columns=list('AB'))
In [2]: dfa = df.ix[:, [1, 0]]
In [3]: dfa.is_copy
Out[3]: True
In [4]: dfa['A'] /= 2
/usr/local/bin/ipython:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_index,col_indexer] = value instead
#!/usr/local/bin/python
You can set the is_copy
flag to False
, which will effectively turn off the check, for that object:
In [5]: dfa.is_copy = False
In [6]: dfa['A'] /= 2
If you explicitly copy then no further warning will happen:
In [7]: dfa = df.ix[:, [1, 0]].copy()
In [8]: dfa['A'] /= 2
The code the OP is showing above, while legitimate, and probably something I do as well, is technically a case for this warning, and not a false positive. Another way to not have the warning would be to do the selection operation via reindex
, e.g.
quote_df = quote_df.reindex(columns=['STK', ...])
Or,
quote_df = quote_df.reindex(['STK', ...], axis=1) # v.0.21
when using javascript objects, you can also just use "dot notation" to add an item, (which JSLint prefers)
var myArray = { name : "john" };
//will initiate a key-value array with one item "name" and the value "john"
myArray.lastName = "smith";
//will add a key named lastName with the value "smith"
//Object {name: "john", lastName: "smith"}
Here is a screenshot from testing in the Chrome console
For Select2 4.X
var instance = $('#select2Container').data('select2');
var searchVal = instance.dropdown.$search.val();
instance.trigger('query', {term:searchVal});
Just use getContentResolver().openInputStream(uri)
to get an InputStream
from a URI.
Typically we would place one of these at or near the top of the script. Scripts that parse their command lines would do the redirection after parsing.
Send stdout to a file
exec > file
with stderr
exec > file
exec 2>&1
append both stdout and stderr to file
exec >> file
exec 2>&1
As Jonathan Leffler mentioned in his comment:
exec
has two separate jobs. The first one is to replace the currently executing shell (script) with a new program. The other is changing the I/O redirections in the current shell. This is distinguished by having no argument to exec
.
if x: #x is treated True except for all empty data types [],{},(),'',0 False, and None
so it is not same as
if x is not None # which works only on None
Indeed, the compiler doesn't know how to convert this anonymous type (the new { x.ServerName, x.ProcessID, x.Username }
part) to a PInfo object.
var dataset = entities.processlists
.Where(x => x.environmentID == environmentid && x.ProcessName == processname && x.RemoteIP == remoteip && x.CommandLine == commandlinepart)
.Select(x => new { x.ServerName, x.ProcessID, x.Username }).ToList();
This gives you a list of objects (of anonymous type) you can use afterwards, but you can't return that or pass that to another method.
If your PInfo object has the right properties, it can be like this :
var dataset = entities.processlists
.Where(x => x.environmentID == environmentid && x.ProcessName == processname && x.RemoteIP == remoteip && x.CommandLine == commandlinepart)
.Select(x => new PInfo
{
ServerName = x.ServerName,
ProcessID = x.ProcessID,
UserName = x.Username
}).ToList();
Assuming that PInfo has at least those three properties.
Both query allow you to fetch only the wanted columns, but using an existing type (like in the second query) allows you to send this data to other parts of your app.
Programmatically, you can do this:
btn.BorderBrush = new SolidColorBrush(Colors.Transparent);
I would argue that there is a better method, by setting the scope of the variable $MyInvocation.MyCommand.Path:
ex> $script:MyInvocation.MyCommand.Name
This method works in all circumstances of invocation:
EX: Somescript.ps1
function printme () {
"In function:"
( "MyInvocation.ScriptName: " + [string]($MyInvocation.ScriptName) )
( "script:MyInvocation.MyCommand.Name: " + [string]($script:MyInvocation.MyCommand.Name) )
( "MyInvocation.MyCommand.Name: " + [string]($MyInvocation.MyCommand.Name) )
}
"Main:"
( "MyInvocation.ScriptName: " + [string]($MyInvocation.ScriptName) )
( "script:MyInvocation.MyCommand.Name: " + [string]($script:MyInvocation.MyCommand.Name) )
( "MyInvocation.MyCommand.Name: " + [string]($MyInvocation.MyCommand.Name) )
" "
printme
exit
OUTPUT:
PS> powershell C:\temp\test.ps1
Main:
MyInvocation.ScriptName:
script:MyInvocation.MyCommand.Name: test.ps1
MyInvocation.MyCommand.Name: test.ps1
In function:
MyInvocation.ScriptName: C:\temp\test.ps1
script:MyInvocation.MyCommand.Name: test.ps1
MyInvocation.MyCommand.Name: printme
Notice how the above accepted answer does NOT return a value when called from Main. Also, note that the above accepted answer returns the full path when the question requested the script name only. The scoped variable works in all places.
Also, if you did want the full path, then you would just call:
$script:MyInvocation.MyCommand.Path
git commit -m "Merged master fixed conflict."
Your usage is correct. I bet that your external program, flow.exe, needs to be executed in its directory, because it accesses some external files stored there.
So you might try:
import sys, string, os, arcgisscripting
os.chdir('c:\\documents and settings\\flow_model')
os.system('"C:\\Documents and Settings\\flow_model\\flow.exe"')
(Beware of the double quotes inside the single quotes...)
Generally, the answer to your question is no, you cannot define more than one externally visible function per file. You can return function handles to local functions, though, and a convenient way to do so is to make them fields of a struct. Here is an example:
function funs = makefuns
funs.fun1=@fun1;
funs.fun2=@fun2;
end
function y=fun1(x)
y=x;
end
function z=fun2
z=1;
end
And here is how it could be used:
>> myfuns = makefuns;
>> myfuns.fun1(5)
ans =
5
>> myfuns.fun2()
ans =
1
We have noticed that using the MediaQuery
class can be a bit cumbersome, and it’s also missing a couple of key pieces of information.
Here We have a small Screen helper class, that we use across all our new projects:
class Screen {
static double get _ppi => (Platform.isAndroid || Platform.isIOS)? 150 : 96;
static bool isLandscape(BuildContext c) => MediaQuery.of(c).orientation == Orientation.landscape;
//PIXELS
static Size size(BuildContext c) => MediaQuery.of(c).size;
static double width(BuildContext c) => size(c).width;
static double height(BuildContext c) => size(c).height;
static double diagonal(BuildContext c) {
Size s = size(c);
return sqrt((s.width * s.width) + (s.height * s.height));
}
//INCHES
static Size inches(BuildContext c) {
Size pxSize = size(c);
return Size(pxSize.width / _ppi, pxSize.height/ _ppi);
}
static double widthInches(BuildContext c) => inches(c).width;
static double heightInches(BuildContext c) => inches(c).height;
static double diagonalInches(BuildContext c) => diagonal(c) / _ppi;
}
To use
bool isLandscape = Screen.isLandscape(context)
bool isLargePhone = Screen.diagonal(context) > 720;
bool isTablet = Screen.diagonalInches(context) >= 7;
bool isNarrow = Screen.widthInches(context) < 3.5;
To More, See: https://blog.gskinner.com/archives/2020/03/flutter-simplify-platform-detection-responsive-sizing.html
As others have stated, you can use escape characters. You can use my header in order to make it easier:
#ifndef _COLORS_
#define _COLORS_
/* FOREGROUND */
#define RST "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
#define KYEL "\x1B[33m"
#define KBLU "\x1B[34m"
#define KMAG "\x1B[35m"
#define KCYN "\x1B[36m"
#define KWHT "\x1B[37m"
#define FRED(x) KRED x RST
#define FGRN(x) KGRN x RST
#define FYEL(x) KYEL x RST
#define FBLU(x) KBLU x RST
#define FMAG(x) KMAG x RST
#define FCYN(x) KCYN x RST
#define FWHT(x) KWHT x RST
#define BOLD(x) "\x1B[1m" x RST
#define UNDL(x) "\x1B[4m" x RST
#endif /* _COLORS_ */
An example using the macros of the header could be:
#include <iostream>
#include "colors.h"
using namespace std;
int main()
{
cout << FBLU("I'm blue.") << endl;
cout << BOLD(FBLU("I'm blue-bold.")) << endl;
return 0;
}
Keep in mind that window.event is not supported in FireFox, and therefore it must be something along the lines of:
e.cancelBubble = true
Or, you can use the W3C standard for FireFox:
e.stopPropagation();
If you want to get fancy, you can do this:
function myEventHandler(e)
{
if (!e)
e = window.event;
//IE9 & Other Browsers
if (e.stopPropagation) {
e.stopPropagation();
}
//IE8 and Lower
else {
e.cancelBubble = true;
}
}
Arrays in JS have two types of properties:
Regular elements and associative properties (which are nothing but objects)
When you define a = new Array()
, you are defining an empty array. Note that there are no associative objects yet
When you define b = new Array(2)
, you are defining an array with two undefined locations.
In both your examples of 'a' and 'b', you are adding associative properties i.e. objects to these arrays.
console.log (a)
or console.log(b)
prints the array elements i.e. []
and [undefined, undefined]
respectively. But since a1/a2
and b1/b2
are associative objects inside their arrays, they can be logged only by console.log(a.a1, a.a2)
kind of syntax
The exception occurs due to this statement,
called_from.equalsIgnoreCase("add")
It seem that the previous statement
String called_from = getIntent().getStringExtra("called");
returned a null reference.
You can check whether the intent to start this activity contains such a key "called".
Try this. Note there's no database specified - it just runs "on the server"
psql -U postgres -c "drop database databasename"
If that doesn't work, I have seen a problem with postgres holding onto orphaned prepared statements.
To clean them up, do this:
SELECT * FROM pg_prepared_xacts;
then for every id you see, run this:
ROLLBACK PREPARED '<id>';
Don't listen to every people telling you that namespaces are just name-spaces.
They are important because they are considered by the compiler to apply the interface principle. Basically, it can be explained by an example:
namespace ns {
class A
{
};
void print(A a)
{
}
}
If you wanted to print an A object, the code would be this one:
ns::A a;
print(a);
Note that we didn't explicitly mention the namespace when calling the function. This is the interface principle: C++ consider a function taking a type as an argument as being part of the interface for that type, so no need to specify the namespace because the parameter already implied the namespace.
Now why this principle is important? Imagine that the class A author did not provide a print() function for this class. You will have to provide one yourself. As you are a good programmer, you will define this function in your own namespace, or maybe in the global namespace.
namespace ns {
class A
{
};
}
void print(A a)
{
}
And your code can start calling the print(a) function wherever you want. Now imagine that years later, the author decides to provide a print() function, better than yours because he knows the internals of his class and can make a better version than yours.
Then C++ authors decided that his version of the print() function should be used instead of the one provided in another namespace, to respect the interface principle. And that this "upgrade" of the print() function should be as easy as possible, which means that you won't have to change every call to the print() function. That's why "interface functions" (function in the same namespace as a class) can be called without specifying the namespace in C++.
And that's why you should consider a C++ namespace as an "interface" when you use one and keep in mind the interface principle.
If you want better explanation of this behavior, you can refer to the book Exceptional C++ from Herb Sutter
I don't think you can do it in one line of code. Try opening your activities with startActivityForResult. As the result you can pass something like a CLOSE_FLAG, which will inform your parent activity that its child activity has finished.
That said, you should probably read this answer.
Seems to be quite efficient:
import datetime
day, month, year = '01/12/2011'.split('/')
datetime.datetime(int(year), int(month), int(day)).timestamp()
1.61 µs ± 120 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
Given how mangled some data can look after BCP importing into SQL Server from non-SQL data sources, I'd suggest doing all the BCP import into some scratch tables first.
For example
truncate table Address_Import_tbl
BULK INSERT dbo.Address_Import_tbl FROM 'E:\external\SomeDataSource\Address.csv' WITH ( FIELDTERMINATOR = '|', ROWTERMINATOR = '\n', MAXERRORS = 10 )
Make sure all the columns in Address_Import_tbl are nvarchar(), to make it as agnostic as possible, and avoid type conversion errors.
Then apply whatever fixes you need to Address_Import_tbl. Like deleting the unwanted header.
Then run a INSERT SELECT query, to copy from Address_Import_tbl to Address_tbl, along with any datatype conversions you need. For example, to cast imported dates to SQL DATETIME.
An awk
code based on RS
.
awk '1' RS=',\n' file
or:
awk 'BEGIN{RS=",\n"}1' file
This last example will be valid for any char before newline:
awk '1' RS='.\n' file
Note: dot .
matches any character except line breaks.
Explanation
awk
allows us to use different record (line) regex
separators, we just need to include the comma before the line break (or dot
for any char) in the one used for the input
, the RS
.
Note: what that 1
means?
Short answer, It's just a shortcut to avoid using the print
statement.
In awk
when a condition gets matched the default action is to print the input line, example:
$ echo "test" |awk '1'
test
That's because 1
will be always true, so this expression is equivalent to:
$ echo "test"|awk '1==1'
test
$ echo "test"|awk '{if (1==1){print}}'
test
Documentation
Check Record Splitting with Standard awk and Output Separators.
In case of NULL
columns it is better to use IF
clause like this which combine the two functions of : CONCAT
and COALESCE
and uses special chars between the columns in result like space or '_'
SELECT FirstName , LastName ,
IF(FirstName IS NULL AND LastName IS NULL, NULL,' _ ',CONCAT(COALESCE(FirstName ,''), COALESCE(LastName ,'')))
AS Contact_Phone FROM TABLE1
In a new ASP.Net 5 MVC project in a controller action you can still do this.Context
and this.Context.Request
It looks like on the Request there is no longer a Url property but the child properties (schema, host, etc) are all on the request object directly.
public IActionResult About()
{
ViewBag.Message = "Your application description page.";
var schema = this.Context.Request.Scheme;
return View();
}
Rather or not you want to use this.Context or inject the property is another conversation. Dependency Injection in ASP.NET vNext
All these comments are great, but I'm really surprised nobody mentioned Google's Objective-C Style Guide that was published a while back. I think they have done a very thorough job.
I believe that is the point of an anonymous function, it lacks a name or a way to reference it.
If I were you I would just create a named function, or put it in a variable so you have a reference to it.
var t = {};
var handler = function(e) {
t.scroll = function(x, y) {
window.scrollBy(x, y);
};
t.scrollTo = function(x, y) {
window.scrollTo(x, y);
};
};
window.document.addEventListener("keydown", handler);
You can then remove it by
window.document.removeEventListener("keydown", handler);
include your Member Class to your jsp :
<%@ page import="pageNumber.*, java.util.*, java.io.*,yourMemberPackage.Member" %>
If you are using an in-memory collection as your filter, it's probably best to use the negation of Contains(). Note that this can fail if the list is too long, in which case you will need to choose another strategy (see below for using a strategy for a fully DB-oriented query).
var exceptionList = new List<string> { "exception1", "exception2" };
var query = myEntities.MyEntity
.Select(e => e.Name)
.Where(e => !exceptionList.Contains(e.Name));
If you're excluding based on another database query using Except
might be a better choice. (Here is a link to the supported Set extensions in LINQ to Entities)
var exceptionList = myEntities.MyOtherEntity
.Select(e => e.Name);
var query = myEntities.MyEntity
.Select(e => e.Name)
.Except(exceptionList);
This assumes a complex entity in which you are excluding certain ones depending some property of another table and want the names of the entities that are not excluded. If you wanted the entire entity, then you'd need to construct the exceptions as instances of the entity class such that they would satisfy the default equality operator (see docs).
if its a dict, flask can return it directly (Version 1.0.2)
def summary():
d = make_summary()
return d, 200
I think you need to use for example:
aws ecs list-container-instances --cluster default --region us-east-1
This depends of your region of course.
Assigning $1
works but it will leave a leading space: awk '{first = $1; $1 = ""; print $0, first; }'
You can also find the number of columns in NF
and use that in a loop.
Calculates the size of the java.sql.ResultSet:
int size = 0;
if (rs != null) {
rs.beforeFirst();
rs.last();
size = rs.getRow();
}
(Source)
It is an approach to incrementally add the cron job:
ssh USER_NAME@$PRODUCT_IP nohup "echo '*/2 * * * * ping -c2 PRODUCT_NAME.com >> /var/www/html/test.html' | crontab -u USER_NAME -"
SQL Server default port is 1434.
To allow remote access I had to release those ports on my firewall:
Protocol | Port
---------------------
UDP | 1050
TCP | 1050
TCP | 1433
UDP | 1434
Your problem is in your php file. When you use jquery serialize()
method you are sending a string, so you can not treat it like an array. Make a var_dump($_post)
and you will see what I am talking about.
Query syntax
var query = from p in context.People
group p by p.name into g
select new
{
name = g.Key,
count = g.Count()
};
Method syntax
var query = context.People
.GroupBy(p => p.name)
.Select(g => new { name = g.Key, count = g.Count() });
if you set style="height:100px;" on a td if the td has content that grows the cell more than that, it will do so no need for min height on a td.
An another way is simply :
if($test){
echo "Yes 1";
}
if(!is_null($test)){
echo "Yes 2";
}
$test = "hello";
if($test){
echo "Yes 3";
}
Will return :
"Yes 3"
The best way is to use isset(), otherwise you can have an error like "undefined $test".
You can do it like this :
if( isset($test) && ($test!==null) )
You'll not have any error because the first condition isn't accepted.
There is no way to "hide" a UIBarButtonItem you must remove it from the superView and add it back when you want to display it again.
That is the right code. What is probably happening is your form is submitting, and you see the new page (where the element will exist again).
For Windows 10, from the Android Studio terminal:
keytool -exportcert -alias androiddebugkey -keystore %USER_PROFILE%"/.android/debug.keystore -list -v
Note: For the debug.keystore
, the password is "android". The debug keystore is typically located at "%USER_PROFILE%"/.android/debug.keystore
.
Setting the HttpWebRequest.KeepAlive
to false
didn't work for me.
Since I was accessing a HTTPS page I had to set the Service Point Security Protocol to Tls12.
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
Notice that there are other SecurityProtocolTypes
: SecurityProtocolType.Ssl3
, SecurityProtocolType.Tls
, SecurityProtocolType.Tls11
So if the Tls12 doesn't work for you, try the three remaining options.
Also notice that you can set multiple protocols. This is preferable on most cases.
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
Edit: Since this is a choice of security standards it's obviously best to go with the latest (TLS 1.2 as of writing this), and not just doing what works. In fact, SSL3 has been officially prohibited from use since 2015 and TLS 1.0 and TLS 1.1 will likely be prohibited soon as well. source: @aske-b
Performance is based on the amount of data you are executing on...
If it is less data around 20k. JOIN works better.
If the data is more like 100k+ then IN works better.
If you do not need the data from the other table, IN is good, But it is alwys better to go for EXISTS.
All these criterias I tested and the tables have proper indexes.
hg status will show you all the new files, and then you can just rm them.
Normally I want to get rid of ignored and unversioned files, so:
hg status -iu # to show
hg status -iun0 | xargs -r0 rm # to destroy
And then follow that with:
hg update -C -r xxxxx
which puts all the versioned files in the right state for revision xxxx
To follow the Stack Overflow tradition of telling you that you don't want to do this, I often find that this "Nuclear Option" has destroyed stuff I care about.
The right way to do it is to have a 'make clean' option in your build process, and maybe a 'make reallyclean' and 'make distclean' too.
You probably want to have something like this:
this.sendRequest(...)
.map(...)
.catch((err) => {
//handle your error here
})
It highly depends also how do you use your service but this is the basic case.
j = 0
while i < len(string):
sub_string_out = string[i:len(sub_string)+j]
if sub_string == sub_string_out:
count += 1
i += 1
j += 1
return count
var str = "hello world & hello universe"
In order to replace both Spaces and Symbols in one shot, we can use the below regex code.
str.replaceAll("\\W+","")
Note: \W -> represents Not Words (includes spaces/special characters) | + -> one or many matches
Try it!
I use vim in macos, and the original ctags doesn't work well, so I download newest and configure make make install it. I install ctgas in /usr/local/bin/ctags(to keep original one)
"taglist
let Tlist_Ctags_Cmd = "/usr/local/bin/ctags"
let Tlist_WinWidth = 50
map <leader>ta :TlistToggle<cr>
map <leader>bta :!/usr/local/bin/ctags -R .<CR>
set tags=tags;/
map <M-j> <C-]>
map <M-k> <C-T>
This is a one-line shorthand for an if-else statement. It's called the conditional operator.1
Here is an example of code that could be shortened with the conditional operator:
var userType;
if (userIsYoungerThan18) {
userType = "Minor";
} else {
userType = "Adult";
}
if (userIsYoungerThan21) {
serveDrink("Grape Juice");
} else {
serveDrink("Wine");
}
This can be shortened with the ?:
like so:
var userType = userIsYoungerThan18 ? "Minor" : "Adult";
serveDrink(userIsYoungerThan21 ? "Grape Juice" : "Wine");
Like all expressions, the conditional operator can also be used as a standalone statement with side-effects, though this is unusual outside of minification:
userIsYoungerThan21 ? serveGrapeJuice() : serveWine();
They can even be chained:
serveDrink(userIsYoungerThan4 ? 'Milk' : userIsYoungerThan21 ? 'Grape Juice' : 'Wine');
Be careful, though, or you will end up with convoluted code like this:
var k = a ? (b ? (c ? d : e) : (d ? e : f)) : f ? (g ? h : i) : j;
1 Often called "the ternary operator," but in fact it's just a ternary operator [an operator accepting three operands]. It's the only one JavaScript currently has, though.
This could help.
if (! isFinishing()) {
dialog.show();
}
If you use
git fetch --dry-run -v <link/to/remote/git/repo>
you'll get feedback about whether it is up-to-date. So basically, you just need to add the "verbose" option to the answer given before.
Use statistics.mean
:
import statistics
print(statistics.mean([1,2,4])) # 2.3333333333333335
It's available since Python 3.4. For 3.1-3.3 users, an old version of the module is available on PyPI under the name stats
. Just change statistics
to stats
.
ES6 Map version :
getTreeData = (items) => {
if (items && items.length > 0) {
const data = [];
const map = {};
items.map((item) => {
const id = item.id; // custom id selector !!!
if (!map.hasOwnProperty(id)) {
// in case of duplicates
map[id] = {
...item,
children: [],
};
}
});
for (const id in map) {
if (map.hasOwnProperty(id)) {
let mappedElem = [];
mappedElem = map[id];
/// parentId : use custom id selector for parent
if (
mappedElem.parentId &&
typeof map[mappedElem.parentId] !== "undefined"
) {
map[mappedElem.parentId].children.push(mappedElem);
} else {
data.push(mappedElem);
}
}
}
return data;
}
return [];
};
/// use like this :
const treeData = getTreeData(flatList);
You could use
options(warn=-1)
But note that turning off warning messages globally might not be a good idea.
To turn warnings back on, use
options(warn=0)
(or whatever your default is for warn
, see this answer)
I wanted to set the width of the first column of the table, and I found this worked (in FF7) - the first column is 50px wide:
#MyTable>thead>tr>th:first-child { width:50px;}
where my markup was
<table id="MyTable">
<thead>
<tr>
<th scope="col">Col1</th>
<th scope="col">Col2</th>
</tr>
</thead>
<tbody>
...
</tbody>
</table>
If you wanted to evaluate floats, and you wanted to accept NaN
s as input but not other strings like 'abc'
, you could do the following:
def isnumber(x):
import numpy
try:
return type(numpy.float(x)) == float
except ValueError:
return False
According to the Go specification:
For an expression x of interface type and a type T, the primary expression x.(T) asserts that x is not nil and that the value stored in x is of type T.
A "type assertion" allows you to declare an interface value contains a certain concrete type or that its concrete type satisfies another interface.
In your example, you were asserting data (type interface{}) has the concrete type string. If you are wrong, the program will panic at runtime. You do not need to worry about efficiency, checking just requires comparing two pointer values.
If you were unsure if it was a string or not, you could test using the two return syntax.
str, ok := data.(string)
If data is not a string, ok will be false. It is then common to wrap such a statement into an if statement like so:
if str, ok := data.(string); ok {
/* act on str */
} else {
/* not string */
}
I know the question is almost 4 years old, but this is what worked smoothly with me:
String.prototype.encodeHex = function () {_x000D_
var bytes = [];_x000D_
for (var i = 0; i < this.length; ++i) {_x000D_
bytes.push(this.charCodeAt(i));_x000D_
}_x000D_
return bytes;_x000D_
};_x000D_
_x000D_
Array.prototype.decodeHex = function () { _x000D_
var str = [];_x000D_
var hex = this.toString().split(',');_x000D_
for (var i = 0; i < hex.length; i++) {_x000D_
str.push(String.fromCharCode(hex[i]));_x000D_
}_x000D_
return str.toString().replace(/,/g, "");_x000D_
};_x000D_
_x000D_
var str = "Hello World!";_x000D_
var bytes = str.encodeHex();_x000D_
_x000D_
alert('The Hexa Code is: '+bytes+' The original string is: '+bytes.decodeHex());
_x000D_
or, if you want to work with strings only, and no Array, you can use:
String.prototype.encodeHex = function () {_x000D_
var bytes = [];_x000D_
for (var i = 0; i < this.length; ++i) {_x000D_
bytes.push(this.charCodeAt(i));_x000D_
}_x000D_
return bytes.toString();_x000D_
};_x000D_
_x000D_
String.prototype.decodeHex = function () { _x000D_
var str = [];_x000D_
var hex = this.split(',');_x000D_
for (var i = 0; i < hex.length; i++) {_x000D_
str.push(String.fromCharCode(hex[i]));_x000D_
}_x000D_
return str.toString().replace(/,/g, "");_x000D_
};_x000D_
_x000D_
var str = "Hello World!";_x000D_
var bytes = str.encodeHex();_x000D_
_x000D_
alert('The Hexa Code is: '+bytes+' The original string is: '+bytes.decodeHex());
_x000D_
It appears this issue is fixed in npm v5.4.2
https://github.com/npm/npm/issues/17979
(Scroll down to the last comment in the thread)
Update
Actually fixed in 5.6.0. There was a cross platform bug in 5.4.2 that was causing the issue to still occur.
https://github.com/npm/npm/issues/18712
Update 2
See my answer here: https://stackoverflow.com/a/53680257/1611058
npm ci
is the command you should be using when installing existing projects now.
There's no such thing as a "complete" list. Different people have different ways of measuring -- for example, they might include slang, neologisms, multi-word phrases, offensive terms, foreign words, verb conjugations, and so on. Some people have even counted a million words! So you'll have to decide what you want in a word list.
i created a custom View DistributeLayout to do this.
I have a list of color names in range A2:A8, in column B I want to extract a distinct list of color names.
Follow the below given steps:
=IF(COUNTIF(A$2:A2,A2)=1,A2,””)
//Try this,it can find divisors of verrrrrrrrrry big numbers (pretty efficiently :-))
#include<iostream>
#include<cstdio>
#include<cmath>
#include<vector>
#include<conio.h>
using namespace std;
vector<double> D;
void divs(double N);
double mod(double &n1, double &n2);
void push(double N);
void show();
int main()
{
double N;
cout << "\n Enter number: "; cin >> N;
divs(N); // find and push divisors to D
cout << "\n Divisors of "<<N<<": "; show(); // show contents of D (all divisors of N)
_getch(); // used visual studio, if it isn't supported replace it by "getch();"
return(0);
}
void divs(double N)
{
for (double i = 1; i <= sqrt(N); ++i)
{
if (!mod(N, i)) { push(i); if(i*i!=N) push(N / i); }
}
}
double mod(double &n1, double &n2)
{
return(((n1/n2)-floor(n1/n2))*n2);
}
void push(double N)
{
double s = 1, e = D.size(), m = floor((s + e) / 2);
while (s <= e)
{
if (N==D[m-1]) { return; }
else if (N > D[m-1]) { s = m + 1; }
else { e = m - 1; }
m = floor((s + e) / 2);
}
D.insert(D.begin() + m, N);
}
void show()
{
for (double i = 0; i < D.size(); ++i) cout << D[i] << " ";
}
The thread module does work simultaneously unlike multiprocess, but the timing is a bit off. The code below prints a "1" and a "2". These are called by different functions respectively. I did notice that when printed to the console, they would have slightly different timings.
from threading import Thread
def one():
while(1 == num):
print("1")
time.sleep(2)
def two():
while(1 == num):
print("2")
time.sleep(2)
p1 = Thread(target = one)
p2 = Thread(target = two)
p1.start()
p2.start()
Output: (Note the space is for the wait in between printing)
1
2
2
1
12
21
12
1
2
Not sure if there is a way to correct this, or if it matters at all. Just something I noticed.
In Reactive Form, there are 2 primary solutions to update value(s) of form field(s).
Initialize Model Structure in Constructor:
this.newForm = this.formBuilder.group({
firstName: ['', [Validators.required, Validators.minLength(3), Validators.maxLength(8)]],
lastName: ['', [Validators.required, Validators.minLength(3), Validators.maxLength(8)]]
});
If you want to update all fields of form:
this.newForm.setValue({
firstName: 'abc',
lastName: 'def'
});
If you want to update specific field of form:
this.newForm.controls.firstName.setValue('abc');
Note: It’s mandatory to provide complete model structure for all form field controls within the FormGroup. If you miss any property or subset collections, then it will throw an exception.
If you want to update some/ specific fields of form:
this.newForm.patchValue({
firstName: 'abc'
});
Note: It’s not mandatory to provide model structure for all/ any form field controls within the FormGroup. If you miss any property or subset collections, then it will not throw any exception.
One way,
Solution Explorer > Your Project > Properties > Settings.Settings. Click on this file and add define your settings from the IDE.
Access them by
Properties.Settings.Default.MySetting = "hello world";
For me all done as mentioned above still it was not working then I followed below steps and working like charm
Go Window security => Select Firewall and network protection => Turn off private network
If you only intend to repeat the same character you can use the string constructor that accepts a char and the number of times to repeat it new String(char c, int count)
.
For example, to repeat a dash five times:
string result = new String('-', 5);
Output: -----
I had this or a similar problem after installing Tomcat.
The other answers didn't quite work, but got me on the right path. I answered this at https://stackoverflow.com/a/20762179/3128838 after discovering a YouTube video showing the exact problem I was having.
The full list of readyState
values is:
State Description
0 The request is not initialized
1 The request has been set up
2 The request has been sent
3 The request is in process
4 The request is complete
(from https://www.w3schools.com/js/js_ajax_http_response.asp)
In practice you almost never use any of them except for 4.
Some XMLHttpRequest implementations may let you see partially received responses in responseText
when readyState==3
, but this isn't universally supported and shouldn't be relied upon.
You can replace
document.getElementById(this.state.baction).addPrecent(10);
with
this.refs[this.state.baction].addPrecent(10);
<Progressbar completed={25} ref="Progress1" id="Progress1"/>
To have a good follow-up about all this, Twitter - one of the pioneers of hashbang URL's and single-page-interface - admitted that the hashbang system was slow in the long run and that they have actually started reversing the decision and returning to old-school links.
Yes you can! For a simple repository that only publish/retrieve artifacts, you can use nginx.
Make sure nginx has http dav module enabled, it should, but nonetheless verify it.
Configure nginx http dav module:
In Windows: d:\servers\nginx\nginx.conf
location / {
# maven repository
dav_methods PUT DELETE MKCOL COPY MOVE;
create_full_put_path on;
dav_access user:rw group:rw all:r;
}
In Linux (Ubuntu): /etc/nginx/sites-available/default
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
# try_files $uri $uri/ =404; # IMPORTANT comment this
dav_methods PUT DELETE MKCOL COPY MOVE;
create_full_put_path on;
dav_access user:rw group:rw all:r;
}
Don't forget to give permissions to the directory where the repo will be located:
sudo chmod +777 /var/www/html/repository
In your project's pom.xml
add the respective configuration:
Retrieve artifacts:
<repositories>
<repository>
<id>repository</id>
<url>http://<your.ip.or.hostname>/repository</url>
</repository>
</repositories>
Publish artifacts:
<build>
<extensions>
<extension>
<groupId>org.apache.maven.wagon</groupId>
<artifactId>wagon-http</artifactId>
<version>3.2.0</version>
</extension>
</extensions>
</build>
<distributionManagement>
<repository>
<id>repository</id>
<url>http://<your.ip.or.hostname>/repository</url>
</repository>
</distributionManagement>
To publish artifacts use mvn deploy
. To retrieve artifacts, maven will do it automatically.
And there you have it a simple maven repo.
Below is corrected Snippet of runThread
Function.
private void runThread() {
new Thread() {
public void run() {
while (i++ < 1000) {
try {
runOnUiThread(new Runnable() {
@Override
public void run() {
btn.setText("#" + i);
}
});
Thread.sleep(300);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}
pow
is built into the language(not part of the math library). The problem is that you haven't imported math.
Try this:
import math
math.sqrt(4)
You can achieve this with this simple CSS/HTML:
.image-container {
position: relative;
width: 200px;
height: 300px;
}
.image-container .after {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
display: none;
color: #FFF;
}
.image-container:hover .after {
display: block;
background: rgba(0, 0, 0, .6);
}
HTML
<div class="image-container">
<img src="http://lorempixel.com/300/200" />
<div class="after">This is some content</div>
</div>
UPD: Here is one nice final demo with some extra stylings.
.image-container {_x000D_
position: relative;_x000D_
display: inline-block;_x000D_
}_x000D_
.image-container img {display: block;}_x000D_
.image-container .after {_x000D_
position: absolute;_x000D_
top: 0;_x000D_
left: 0;_x000D_
width: 100%;_x000D_
height: 100%;_x000D_
display: none;_x000D_
color: #FFF;_x000D_
}_x000D_
.image-container:hover .after {_x000D_
display: block;_x000D_
background: rgba(0, 0, 0, .6);_x000D_
}_x000D_
.image-container .after .content {_x000D_
position: absolute;_x000D_
bottom: 0;_x000D_
font-family: Arial;_x000D_
text-align: center;_x000D_
width: 100%;_x000D_
box-sizing: border-box;_x000D_
padding: 5px;_x000D_
}_x000D_
.image-container .after .zoom {_x000D_
color: #DDD;_x000D_
font-size: 48px;_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
left: 50%;_x000D_
margin: -30px 0 0 -19px;_x000D_
height: 50px;_x000D_
width: 45px;_x000D_
cursor: pointer;_x000D_
}_x000D_
.image-container .after .zoom:hover {_x000D_
color: #FFF;_x000D_
}
_x000D_
<link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css" rel="stylesheet"/>_x000D_
_x000D_
<div class="image-container">_x000D_
<img src="http://lorempixel.com/300/180" />_x000D_
<div class="after">_x000D_
<span class="content">This is some content. It can be long and span several lines.</span>_x000D_
<span class="zoom">_x000D_
<i class="fa fa-search"></i>_x000D_
</span>_x000D_
</div>_x000D_
</div>
_x000D_
The easiest solution is to create 3 divs
. One that will contain the other 2, the one with transparent background and the one with content. Make the first div's position relative and set the one with transparent background to negative z-index
, then adjust the position of the content to fit over the transparent background. This way you won't have issues with absolute positioning.
1.Set the following Environment Property on your active Shell. - open bash terminal and type in:
$ export LD_BIND_NOW=1
Note: for superuser in bash type su and press enter
var emptyDictionary = [String: String]()
var populatedDictionary = ["key1": "value1", "key2": "value2"]
Note: if you are going to change the contents of the dictionary over time then declare it as a var
(variable). You can declare an empty dictionary as a let
(constant) but it is pointless if you have the intention of changing its contents over time, since constant can't be changed after it has been initialized.
Old answer:
Creating an empty dictionary of type <String, String>
would look as follows:
var emptyDictionary = Dictionary<String, String>()
The parent function needs the virtual
keyword, and the child function needs the override
keyword in front of the function definition.
its possible to have multiple values in a select option as shown below.
<select id="ddlEmployee" class="form-control">
<option value="">-- Select --</option>
<option value="1" data-city="Washington" data-doj="20-06-2011">John</option>
<option value="2" data-city="California" data-doj="10-05-2015">Clif</option>
<option value="3" data-city="Delhi" data-doj="01-01-2008">Alexander</option>
</select>
you can get selected value on change event using jquery as shown below.
$("#ddlEmployee").change(function () {
alert($(this).find(':selected').data('city'));
});
You can find more details in this LINK
You can add a reference to System.Configuration
in your project and then:
using System.Configuration;
then
string sValue = ConfigurationManager.AppSettings["BatchFile"];
with an app.config
file like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="BatchFile" value="blah.bat" />
</appSettings>
</configuration>
in .mjs files we for now don't have __dirname
hence
res.sendFile('index.html', { root: '.' })
This library supports HTML5 postMessage and legacy browsers with resize+hash https://github.com/ternarylabs/porthole
Edit: Now in 2014, IE6/7 usage is quite low, IE8 and above all support postMessage
so I now suggest to just use that.
https://developer.mozilla.org/en-US/docs/Web/API/Window.postMessage
SQL Server Script
declare @iDate datetime
set @iDate=GETDATE()
print year(@iDate) -- for Year
print month(@iDate) -- for Month
print day(@iDate) -- for Day
Alert alert = driver.switchTo().alert(); alert.accept();
You can also decline the alert box:
Alert alert = driver.switchTo().alert(); alert().dismiss();
Validating email is a very important point while validating an HTML form. In this page we have discussed how to validate an email using JavaScript :
An email is a string (a subset of ASCII characters) separated into two parts by @ symbol. a "personal_info" and a domain, that is personal_info@domain. The length of the personal_info part may be up to 64 characters long and domain name may be up to 253 characters. The personal_info part contains the following ASCII characters.
The domain name [for example com, org, net, in, us, info] part contains letters, digits, hyphens, and dots.
Example of valid email id
Example of invalid email id
mysite.ourearth.com [@ is not present]
[email protected] [ tld (Top Level domain) can not start with dot "." ]
@you.me.net [ No character before @ ]
[email protected] [ ".b" is not a valid tld ]
[email protected] [ tld can not start with dot "." ]
[email protected] [ an email should not be start with "." ]
mysite()*@gmail.com [ here the regular expression only allows character, digit, underscore, and dash ]
[email protected] [double dots are not allowed]
JavaScript code to validate an email id
function ValidateEmail(mail) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w {2, 3})+$/.test(myForm.emailAddr.value)) {
return (true)
}
alert("You have entered an invalid email address!")
return (false)
}
import { AfterViewInit, Component, ElementRef} from '@angular/core';
constructor(private elementRef:ElementRef) {}
ngAfterViewInit() {
this.elementRef.nativeElement.querySelector('my-element')
.addEventListener('click', this.onClick.bind(this));
}
onClick(event) {
console.log(event);
}
If the DLL and the .NET projects are in the same solution and you want to compile and run both every time, you can right click the properties of the .NET project, Build events, then add something like the following to Post-build event command line:
copy $(SolutionDir)Debug\MyOwn.dll .
It's basically a DOS line, and you can tweak based on where your DLL is being built to.
If you use a TypeScript interface instead of a class, things are simpler:
export interface Employee {
typeOfEmployee_id: number;
department_id: number;
permissions_id: number;
maxWorkHours: number;
employee_id: number;
firstname: string;
lastname: string;
username: string;
birthdate: Date;
lastUpdate: Date;
}
let jsonObj: any = JSON.parse(employeeString); // string to generic object first
let employee: Employee = <Employee>jsonObj;
If you want a class, however, simple casting won't work. For example:
class Foo {
name: string;
public pump() { }
}
let jsonObj: any = JSON.parse('{ "name":"hello" }');
let fObj: Foo = <Foo>jsonObj;
fObj.pump(); // crash, method is undefined!
For a class, you'll have to write a constructor which accepts a JSON string/object and then iterate through the properties to assign each member manually, like this:
class Foo {
name: string;
constructor(jsonStr: string) {
let jsonObj: any = JSON.parse(jsonStr);
for (let prop in jsonObj) {
this[prop] = jsonObj[prop];
}
}
}
let fObj: Foo = new Foo(theJsonString);
list.insert with any index >= len(of_the_list) places the value at the end of list. It behaves like append
Python 3.7.4
>>>lst=[10,20,30]
>>>lst.insert(len(lst), 101)
>>>lst
[10, 20, 30, 101]
>>>lst.insert(len(lst)+50, 202)
>>>lst
[10, 20, 30, 101, 202]
Time complexity, append O(1), insert O(n)
How about something like this
PROXY = "149.215.113.110:70"
webdriver.DesiredCapabilities.FIREFOX['proxy'] = {
"httpProxy":PROXY,
"ftpProxy":PROXY,
"sslProxy":PROXY,
"noProxy":None,
"proxyType":"MANUAL",
"class":"org.openqa.selenium.Proxy",
"autodetect":False
}
# you have to use remote, otherwise you'll have to code it yourself in python to
driver = webdriver.Remote("http://localhost:4444/wd/hub", webdriver.DesiredCapabilities.FIREFOX)
You can read more about it here.
If expr is greater than or equal to min and expr is less than or equal to max,
BETWEEN
returns 1, otherwise it returns 0.
The important part here is EQUAL to max., which 1st of July is.
Both of
int main(int argc, char *argv[]);
int main();
are legal definitions of the entry point for a C or C++ program. Stroustrup: C++ Style and Technique FAQ details some of the variations that are possible or legal for your main function.
try:
user = UniversityDetails.objects.get(email=email)
except UniversityDetails.DoesNotExist:
user = None
I also see you're storing your passwords in plaintext (a big security no-no!). Consider using the built-in auth system instead.
You can't access form inputs via their name. Use document.getElements
methods instead.
The first numbers of the credit card can be used to approximate the vendor:
Seriously, the top answer is not working for me. tried cxf.version 2.4.1 and 3.0.10. and generate absolute path with wsdlLocation every times.
My solution is to use the wsdl2java
command in the apache-cxf-3.0.10\bin\
with -wsdlLocation classpath:wsdl/QueryService.wsdl
.
Detail:
wsdl2java -encoding utf-8 -p com.jeiao.boss.testQueryService -impl -wsdlLocation classpath:wsdl/testQueryService.wsdl http://127.0.0.1:9999/platf/testQueryService?wsdl
Like Other said you can use something like that:
IF NOT EXISTS (SELECT 1 FROM Table)
BEGIN
--Do Something
END
ELSE
BEGIN
--Do Another Thing
END
Give the parent a style of overflow: hidden
. If it is overlapping sibling elements, you will have to put it inside of a container with a fixed height/width and give that a style of overflow: hidden
.
Here is a good start maybe
Have a look in the examples for a number of different formating options Double.ToString(string)
The most portable solution I have found is the getconf
command:
getconf _NPROCESSORS_ONLN
This works on both Linux and Mac OS X. Another benefit of this over some of the other approaches is that getconf has been around for a long time. Some of the older Linux machines I have to do development on don't have the nproc
or lscpu
commands available, but they have getconf
.
Editor's note: While the getconf
utility is POSIX-mandated, the specific _NPROCESSORS_ONLN
and _NPROCESSORS_CONF
values are not.
That said, as stated, they work on Linux platforms as well as on macOS; on FreeBSD/PC-BSD, you must omit the leading _
.
A solution kind of delicate
class DotDict(dict):
__setattr__ = dict.__setitem__
__delattr__ = dict.__delitem__
def __getattr__(self, key):
def typer(candidate):
if isinstance(candidate, dict):
return DotDict(candidate)
if isinstance(candidate, str): # iterable but no need to iter
return candidate
try: # other iterable are processed as list
return [typer(item) for item in candidate]
except TypeError:
return candidate
return candidate
return typer(dict.get(self, key))
We have the name property in the .xaml definition:
x:Name="WindowsForm"
Then we have the button:
<Button Command="{Binding CloseCommand}"
CommandParameter="{Binding ElementName=WindowsForm}" />
Then in the ViewModel:
public DelegateCommand <Object> CloseCommand { get; private set; }
Constructor for that view model:
this.CloseCommand = new DelegateCommand<object>(this.CloseAction);
Then at last, the action method:
private void CloseAction (object obj)
{
Window Win = obj as Window;
Win.Close();
}
I used this code to close a pop-up window from an application..
You have a couple of problems here.
First, the XSD has an issue where an element is both named or referenced; in your case should be referenced.
Change:
<xsd:element name="stock" ref="Stock" minOccurs="1" maxOccurs="unbounded"/>
To:
<xsd:element name="stock" type="Stock" minOccurs="1" maxOccurs="unbounded"/>
And:
Stock
Stock
So:
<xsd:element name="Stock">
<xsd:complexType>
To:
<xsd:complexType name="Stock">
Make sure you fix the xml closing tags.
The second problem is that the correct way to reference an external XSD is to use XSD schema with import/include within a wsdl:types element. wsdl:import is reserved to referencing other WSDL files. More information is available by going through the WS-I specification, section WSDL and Schema Import. Based on WS-I, your case would be:
INCORRECT: (the way you showed it)
<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
.....xmlns:external="http://stock.com/schemas/services/stock"
<import namespace="http://stock.com/schemas/services/stock" location="Stock.xsd" />
<message name="getStockQuoteResp">
<part name="parameters" element="external:getStockQuoteResponse" />
</message>
</definitions>
CORRECT:
<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
.....xmlns:external="http://stock.com/schemas/services/stock"
<types>
<schema xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http://stock.com/schemas/services/stock" schemaLocation="Stock.xsd" />
</schema>
</types>
<message name="getStockQuoteResp">
<part name="parameters" element="external:getStockQuoteResponse" />
</message>
</definitions>
SOME processors may support both syntaxes. The XSD you put out shows issues, make sure you first validate the XSD.
It would be better if you go the WS-I way when it comes to WSDL authoring.
Other issues may be related to the use of relative vs. absolute URIs in locating external content.
As answered here, you can also use vh
units instead of max-height: 100%
if it doesn't work on your browser (like Chrome):
img {
max-height: 75vh;
}
Sounds like you just need to install MySQLi.
If you think you've done that and still have a problem, please post your operating system and anything else that might help diagnose it further.
You are correct in thinking that display
is not animatable. It won't work, and you shouldn't bother including it in keyframe animations.
visibility
is technically animatable, but in a round about way. You need to hold the property for as long as needed, then snap to the new value. visibility
doesn't tween between keyframes, it just steps harshly.
.ele {_x000D_
width: 60px;_x000D_
height: 60px;_x000D_
_x000D_
background-color: #ff6699;_x000D_
animation: 1s fadeIn;_x000D_
animation-fill-mode: forwards;_x000D_
_x000D_
visibility: hidden;_x000D_
}_x000D_
_x000D_
.ele:hover {_x000D_
background-color: #123;_x000D_
}_x000D_
_x000D_
@keyframes fadeIn {_x000D_
99% {_x000D_
visibility: hidden;_x000D_
}_x000D_
100% {_x000D_
visibility: visible;_x000D_
}_x000D_
}
_x000D_
<div class="ele"></div>
_x000D_
If you want to fade, you use opacity
. If you include a delay, you'll need visibility
as well, to stop the user from interacting with the element while it's not visible.
.ele {_x000D_
width: 60px;_x000D_
height: 60px;_x000D_
_x000D_
background-color: #ff6699;_x000D_
animation: 1s fadeIn;_x000D_
animation-fill-mode: forwards;_x000D_
_x000D_
visibility: hidden;_x000D_
}_x000D_
_x000D_
.ele:hover {_x000D_
background-color: #123;_x000D_
}_x000D_
_x000D_
@keyframes fadeIn {_x000D_
0% {_x000D_
opacity: 0;_x000D_
}_x000D_
100% {_x000D_
visibility: visible;_x000D_
opacity: 1;_x000D_
}_x000D_
}
_x000D_
<div class="ele"></div>
_x000D_
Both examples use animation-fill-mode
, which can hold an element's visual state after an animation ends.
select regexp_replace(field, E'[\\n\\r]+', ' ', 'g' )
read the manual http://www.postgresql.org/docs/current/static/functions-matching.html
I have made a small comparison of methods mentioned here.
n = 1e+4
library(microbenchmark)
### Using environment as a container
lPtrAppend <- function(lstptr, lab, obj) {lstptr[[deparse(substitute(lab))]] <- obj}
### Store list inside new environment
envAppendList <- function(lstptr, obj) {lstptr$list[[length(lstptr$list)+1]] <- obj}
microbenchmark(times = 5,
env_with_list_ = {
listptr <- new.env(parent=globalenv())
listptr$list <- NULL
for(i in 1:n) {envAppendList(listptr, i)}
listptr$list
},
c_ = {
a <- list(0)
for(i in 1:n) {a = c(a, list(i))}
},
list_ = {
a <- list(0)
for(i in 1:n) {a <- list(a, list(i))}
},
by_index = {
a <- list(0)
for(i in 1:n) {a[length(a) + 1] <- i}
a
},
append_ = {
a <- list(0)
for(i in 1:n) {a <- append(a, i)}
a
},
env_as_container_ = {
listptr <- new.env(parent=globalenv())
for(i in 1:n) {lPtrAppend(listptr, i, i)}
listptr
}
)
Results:
Unit: milliseconds
expr min lq mean median uq max neval cld
env_with_list_ 188.9023 198.7560 224.57632 223.2520 229.3854 282.5859 5 a
c_ 1275.3424 1869.1064 2022.20984 2191.7745 2283.1199 2491.7060 5 b
list_ 17.4916 18.1142 22.56752 19.8546 20.8191 36.5581 5 a
by_index 445.2970 479.9670 540.20398 576.9037 591.2366 607.6156 5 a
append_ 1140.8975 1316.3031 1794.10472 1620.1212 1855.3602 3037.8416 5 b
env_as_container_ 355.9655 360.1738 399.69186 376.8588 391.7945 513.6667 5 a
the question is a little confused. timestamps are not UTC - they're a Unix thing. the date might be UTC? assuming it is, and if you're using Python 3.2+, simple-date makes this trivial:
>>> SimpleDate(date(2011,1,1), tz='utc').timestamp
1293840000.0
if you actually have the year, month and day you don't need to create the date
:
>>> SimpleDate(2011,1,1, tz='utc').timestamp
1293840000.0
and if the date is in some other timezone (this matters because we're assuming midnight without an associated time):
>>> SimpleDate(date(2011,1,1), tz='America/New_York').timestamp
1293858000.0
[the idea behind simple-date is to collect all python's date and time stuff in one consistent class, so you can do any conversion. so, for example, it will also go the other way:
>>> SimpleDate(1293858000, tz='utc').date
datetime.date(2011, 1, 1)
]
DO NOTHING. Just Update Android Studio. Resolve my problem! Work perfectly.
Actually, jQuery has a built in trim function:
var emailAdd = jQuery.trim($(this).text());
See here for details.
It's programmer preference. Personally, I love using this
since it explicitly marks the object members. Of course the _
does the same thing (only when you follow the convention)
A Third Answer
Sorry, maybe I have it correct this time...
var savedBox1, savedBox2, state1=0, state2=0;
jQuery(document).ready(function() {
jQuery(".rec1").click(function() {
if (state1==0){
savedBox1 = jQuery('#rec-box').html();
jQuery('#rec-box').html(jQuery(this).next().html());
state1 = 1;
}else{
jQuery('#rec-box').html(savedBox1);
state1 = 0;
}
});
jQuery(".rec2").click(function() {
if (state1==0){
savedBox2 = jQuery('#rec-box2').html();
jQuery('#rec-box2').html(jQuery(this).next().html());
state2 = 1;
}else{
jQuery('#rec-box2').html(savedBox2);
state2 = 0;
}
});
});
The map file maps the unminified file to the minified file. If you make changes in the unminified file, the changes will be automatically reflected to the minified version of the file.
DTO vs VO
DTO - Data transfer objects are just data containers which are used to transport data between layers and tiers.
Analogy:
Simple Registration form with attributes username, password and email id.
- When this form is submitted in RegistrationServlet file you will get all the attributes from view layer to business layer where you pass the attributes to java beans and then to the DAO or the persistence layer.
- DTO's helps in transporting the attributes from view layer to business layer and finally to the persistence layer.
DTO was mainly used to get data transported across the network efficiently, it may be even from JVM to another JVM.
DTOs are often java.io.Serializable
- in order to transfer data across JVM.
VO - A Value Object [1][2] represents itself a fixed set of data and is similar to a Java enum. A Value Object's identity is based on their state rather than on their object identity and is immutable. A real world example would be Color.RED, Color.BLUE, SEX.FEMALE etc.
POJO vs JavaBeans
[1] The Java-Beanness of a POJO is that its private attributes are all accessed via public getters and setters that conform to the JavaBeans conventions. e.g.
private String foo;
public String getFoo(){...}
public void setFoo(String foo){...};
[2] JavaBeans must implement Serializable and have a no-argument constructor, whereas in POJO does not have these restrictions.
for a border flash: actually very simple: replace from to to 99% black and e.g 1% the shift to blue you can even make it shorter, animation time set to e.g 5sec.
@keyframes myborder {
0% {border-color: black;}
99% {border-color:black;}
100% {border-color: blue;}
}
Building off of Master DJon
Here is simplified function which provides the added utility of returning depth (in case you want to use logic to include the parent task or search at a specific depth)
DELIMITER $$
FUNCTION `childDepth`(pParentId INT, pId INT) RETURNS int(11)
READS SQL DATA
DETERMINISTIC
BEGIN
DECLARE depth,curId int;
SET depth = 0;
SET curId = pId;
WHILE curId IS not null AND curId <> pParentId DO
SELECT ParentId from test where id=curId limit 1 into curId;
SET depth = depth + 1;
END WHILE;
IF curId IS NULL THEN
set depth = -1;
END IF;
RETURN depth;
END$$
Usage:
select * from test where childDepth(1, id) <> -1;
There's a writeup on this article which you might find to be interesting, with some quotes from Jon Skeet. It seems like the use is pretty much the same.
Jon Skeet states that the performance of instance Equals "is slightly better when the strings are short—as the strings increase in length, that difference becomes completely insignificant."
It is a clever means of encoding negative integers in such a way that approximately half of the combination of bits of a data type are reserved for negative integers, and the addition of most of the negative integers with their corresponding positive integers results in a carry overflow that leaves the result to be binary zero.
So, in 2's complement if one is 0x0001 then -1 is 0x1111, because that will result in a combined sum of 0x0000 (with an overflow of 1).
See this question. The first set of parenthesis aren't necessary if you use a function name, but a nameless function requires this construct and the parenthesis serve for coders to realize that they've viewing a self-invoking function when browsing the code (see one blogger's best-practices recommendation).
Try
echo -e "hello\nworld"
hello
world
worked for me in nano
editor.
From the man page:
-e
enable interpretation of backslash escapes
The continued confusion surrounding this issue inspired me to write a blog post about it. The solution I propose in this post is better than your current top rated solution because it does not restrict you to parametrizing your data object for $http service calls; i.e. with my solution you can simply continue to pass actual data objects to $http.post(), etc. and still achieve the desired result.
Also, the top rated answer relies on the inclusion of full jQuery in the page for the $.param() function, whereas my solution is jQuery agnostic, pure AngularJS ready.
http://victorblog.com/2012/12/20/make-angularjs-http-service-behave-like-jquery-ajax/
Hope this helps.
For someone who need to update the PHP version in WAMP, I can recommend this http://wampserver.aviatechno.net/
I had a problems with updating too, but on this website are Wampserver addons like new php version (php 7.1.4 etc.) And you don't have to manually edit files like php.ini or phpForApache.
Enjoy!
This could be caused by the presence of ~/.gitconfig.lock It's possible this file could be an artifact of a previously running git that was aborted for some reason, e.g. ansible timed out or ^C
There is no 100% solution to delete browser cookies.
The problem is that cookies are uniquely identified by not just by their key "name" but also their "domain" and "path".
Without knowing the "domain" and "path" of a cookie, you cannot reliably delete it. This information is not available through JavaScript's document.cookie
. It's not available through the HTTP Cookie header either!
However, if you know the name, path and domain of a cookie, then you can clear it by setting an empty cookie with an expiry date in the past, for example:
function clearCookie(name, domain, path){
var domain = domain || document.domain;
var path = path || "/";
document.cookie = name + "=; expires=" + +new Date + "; domain=" + domain + "; path=" + path;
};
If you'd still like to check your cron jobs you should provide a valid email account when setting the Cron jobs in cPanel.
When you specify a valid email you will receive the output of the cron job that is executed. Thus you will be able to check it and make sure everything has been executed correctly. Note that you will not receive an email if there is no output from the cron job command.
Please bear in mind that you will receive an email for each of the executed cron jobs. This may flood your inbox in case your crons run too often
All the below answers would return you the list.Your need to convert it to matrix
def MATMUL(X, Y):
rows_A = len(X)
cols_A = len(X[0])
rows_B = len(Y)
cols_B = len(Y[0])
if cols_A != rows_B:
print "Matrices are not compatible to Multiply. Check condition C1==R2"
return
# Create the result matrix
# Dimensions would be rows_A x cols_B
C = [[0 for row in range(cols_B)] for col in range(rows_A)]
print C
for i in range(rows_A):
for j in range(cols_B):
for k in range(cols_A):
C[i][j] += A[i][k] * B[k][j]
C = numpy.matrix(C).reshape(len(A),len(B[0]))
return C
Adding one more obnoxious alternative to the list:
perl -pe'$.<=1||last' file
# or
perl -pe'$.<=1||last' < file
# or
cat file | perl -pe'$.<=1||last'
Swift 3
// Default state (previously `.Normal`)
button.setImage(UIImage(named: "image1"), for: [])
// Highlighted
button.setImage(UIImage(named: "image2"), for: .highlighted)
// Selected
button.setImage(UIImage(named: "image3"), for: .selected)
// Selected + Highlighted
button.setImage(UIImage(named: "image4"), for: [.selected, .highlighted])
To set the background image we can use setBackgroundImage(_:for:)
Swift 2.x
// Normal
button.setImage(UIImage(named: "image1"), forState: .Normal)
// Highlighted
button.setImage(UIImage(named: "image2"), forState: .Highlighted)
// Selected
button.setImage(UIImage(named: "image3"), forState: .Selected)
// Selected + Highlighted
button.setImage(UIImage(named: "image4"), forState: [.Selected, .Highlighted])
If you want to literally use the method code from A
and B
you can make your C
class contain an instance of each. If you code against interfaces for A
and B
then your clients don't need to know you're giving them a C
rather than an A
or a B
.
interface IA { void SomeMethodOnA(); }
interface IB { void SomeMethodOnB(); }
class A : IA { void SomeMethodOnA() { /* do something */ } }
class B : IB { void SomeMethodOnB() { /* do something */ } }
class C : IA, IB
{
private IA a = new A();
private IB b = new B();
void SomeMethodOnA() { a.SomeMethodOnA(); }
void SomeMethodOnB() { b.SomeMethodOnB(); }
}
Thank you all for your help, I added this code and it seems it fixed the issue:
.navbar .navbar-nav {
display: inline-block;
float: none;
}
.navbar .navbar-collapse {
text-align: center;
}
Source
Delete the CMakeCache.txt file and try this:
cmake -G %1 -DBUILD_SHARED_LIBS=ON -DBUILD_STATIC_LIBS=ON -DBUILD_TESTS=ON ..
You have to enter all your command-line definitions before including the path.
Global tools can be installed in the default directory or in a specific location. The default directories are:
Linux/macOS ---> $HOME/.dotnet/tools
Windows ---> %USERPROFILE%\.dotnet\tools
If you're trying to run a global tool, check that the PATH environment variable on your machine contains the path where you installed the global tool and that the executable is in that path.
You can use an anonymous function to pass the matches to your function:
$result = preg_replace_callback(
"/\{([<>])([a-zA-Z0-9_]*)(\?{0,1})([a-zA-Z0-9_]*)\}(.*)\{\\1\/\\2\}/isU",
function($m) { return CallFunction($m[1], $m[2], $m[3], $m[4], $m[5]); },
$result
);
Apart from being faster, this will also properly handle double quotes in your string. Your current code using /e
would convert a double quote "
into \"
.
Starting form Dave Thomas script I've been able to write my own solution to overcome 2 problems:
This is my script, that copies app data to sdcard and then pull it
#Check we have one connected device
adb devices -l | grep -e 'device\b' > /dev/null
if [ $? -gt 0 ]; then
echo "No device connected to adb."
exit 1
fi
# Set filename or directory to pull from device
# Set package name we will run as
while getopts f:p: opt; do
case $opt in
f)
fileToPull=$OPTARG
;;
p)
packageName=$OPTARG
;;
esac
done;
# Block package name arg from being blank
if [ -z "$packageName" ]; then
echo "Please specify package name to run as when pulling file"
exit 1
fi
# Check package exists
adb shell pm list packages | grep "$packageName" > /dev/null
if [ $? -gt 0 ]; then
echo "Package name $packageName does not exist on device"
exit 1
fi
adb shell "run-as $packageName cp -r /data/data/$packageName/ /sdcard/$packageName"
adb pull /sdcard/$packageName
adb shell rm -rf /sdcard/$packageName
Have you thought of using TransitionDrawable instead of custom animations? https://developer.android.com/reference/android/graphics/drawable/TransitionDrawable.html
One way to achieve what you are looking for is:
// create the transition layers
Drawable[] layers = new Drawable[2];
layers[0] = new BitmapDrawable(getResources(), firstBitmap);
layers[1] = new BitmapDrawable(getResources(), secondBitmap);
TransitionDrawable transitionDrawable = new TransitionDrawable(layers);
imageView.setImageDrawable(transitionDrawable);
transitionDrawable.startTransition(FADE_DURATION);
Update
Based on Manipulating the browser history, passing the empty string as second parameter of pushState
method (aka title) should be safe against future changes to the method, so it's better to use pushState
like this:
history.pushState(null, '', '/en/step2');
You can read more about that in mentioned article
Original Answer
Use history.pushState
like this:
history.pushState(null, null, '/en/step2');
Update 2 to answer Idan Dagan's comment:
Why not using
history.replaceState()
?
From MDN
history.replaceState() operates exactly like history.pushState() except that replaceState() modifies the current history entry instead of creating a new one
That means if you use replaceState
, yes the url will be changed but user can not use Browser's Back button to back to prev. state(s) anymore (because replaceState
doesn't add new entry to history) and it's not recommended and provide bad UX.
Update 3 to add window.onpopstate
So, as this answer got your attention, here is additional info about manipulating the browser history, after using pushState
, you can detect the back/forward button navigation by using window.onpopstate
like this:
window.onpopstate = function(e) {
// ...
};
As the first argument of pushState
is an object, if you passed an object
instead of null
, you can access that object in onpopstate
which is very handy, here is how:
window.onpopstate = function(e) {
if(e.state) {
console.log(e.state);
}
};
Update 4 to add Reading the current state:
When your page loads, it might have a non-null state object, you can read the state of the current history entry without waiting for a popstate
event using the history.state
property like this:
console.log(history.state);
Bonus: Use following to check history.pushState
support:
if (history.pushState) {
// \o/
}
But I wanted to point out that the opinion expressed in the accepted answer is somewhat outdated. According to more recent discussions (django bugs #7634 and #12785), auto_now and auto_now_add are not going anywhere, and even if you go to the original discussion, you'll find strong arguments against the RY (as in DRY) in custom save methods.
A better solution has been offered (custom field types), but didn't gain enough momentum to make it into django. You can write your own in three lines (it's Jacob Kaplan-Moss' suggestion).
from django.db import models
from django.utils import timezone
class AutoDateTimeField(models.DateTimeField):
def pre_save(self, model_instance, add):
return timezone.now()
#usage
created_at = models.DateField(default=timezone.now)
updated_at = models.AutoDateTimeField(default=timezone.now)
This code will work it out definitely
function closing() {
var answer = confirm("Do you wnat to close this window ?");
if (answer){
netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserWrite');
window.close();
}
else{
stop;
}
}
You can try something like this:
Inside customview constructor:
mContext = context;
Next inside customview you can call:
((MainActivity) mContext).updateText( text );
Inside MainAcivity
define:
public void updateText(final String text) {
TextView txtView = (TextView) findViewById(R.id.text);
txtView.setText(text);
}
It works for me.
As mentioned in other answers, you can do a setEnabled(false)
but since you are asking how to set it via XML, here is how to do it.
Add the following attribute to your EditText
:
android:enabled="false"
Question 1:
vectorOfGamers.push_back(Player)
This is problematic because you cannot directly push a class name into a vector. You can either push an object of class into the vector or push reference or pointer to class type into the vector. For example:
vectorOfGamers.push_back(Player(name, id))
//^^assuming name and id are parameters to the vector, call Player constructor
//^^In other words, push `instance` of Player class into vector
Question 2:
These 3 classes derives from Gamer. Can I create vector to hold objects of Dealer, Bot and Player at the same time? How do I do that?
Yes you can. You can create a vector of pointers that points to the base class Gamer
.
A good choice is to use a vector of smart_pointer
, therefore, you do not need to manage pointer memory by yourself. Since the other three classes are derived from Gamer
, based on polymorphism, you can assign derived class objects to base class pointers. You may find more information from this post: std::vector of objects / pointers / smart pointers to pass objects (buss error: 10)?
How about the following? I only tested this in IE, but it was quite happy to handle strings representing numbers of any length, actual numbers that were integers or floats, and both functions returned false when passed a boolean, undefined, null, an array or an object. (Up to you whether you want to ignore leading or trailing blanks when a string is passed in - I've assumed they are not ignored and cause both functions to return false.)
function isEven(n) {
return /^-?\d*[02468]$/.test(n);
}
function isOdd(n) {
return /^-?\d*[13579]$/.test(n);
}
Sometimes just setting canvas's tabindex to '1' (or '0') works. But sometimes - it doesn't, for some strange reason.
In my case (ReactJS app, dynamic canvas el creation and mount) I need to call canvasEl.focus() to fix it. Maybe this is somehow related to React (my old app based on KnockoutJS works without '..focus()' )
Adding to jelovirt's answer, you can use number() to convert the value to a number, then round(), floor(), or ceiling() to get a whole integer.
Example
<xsl:variable name="MyValAsText" select="'5.14'"/>
<xsl:value-of select="number($MyValAsText) * 2"/> <!-- This outputs 10.28 -->
<xsl:value-of select="floor($MyValAsText)"/> <!-- outputs 5 -->
<xsl:value-of select="ceiling($MyValAsText)"/> <!-- outputs 6 -->
<xsl:value-of select="round($MyValAsText)"/> <!-- outputs 5 -->
A couple of things might affect the results you're seeing:
clock_t
as a floating-point type, I don't think it is.1^4
) to do something else than compute the bitwise XOR of 1 and 4., i.e. it's 5.You're not specifying how fast your machine is, but it's not unreasonable for this to run very quickly on modern hardware, no.
If you have it, try adding a call to sleep()
between the start/stop snapshots. Note that sleep()
is POSIX though, not standard C.
You can't initialize your testArray
field this way, because the application resources still aren't ready.
Just change the code to:
package com.xtensivearts.episode.seven;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class Episode7 extends ListActivity {
String[] mTestArray;
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create an ArrayAdapter that will contain all list items
ArrayAdapter<String> adapter;
mTestArray = getResources().getStringArray(R.array.testArray);
/* Assign the name array to that adapter and
also choose a simple layout for the list items */
adapter = new ArrayAdapter<String>(
this,
android.R.layout.simple_list_item_1,
mTestArray);
// Assign the adapter to this ListActivity
setListAdapter(adapter);
}
}
I needed some formatting logic to be shared across multiple components and as an Angular developer also naturally leaned towards a service.
I shared the logic by putting it in a separate file
function format(input) {
//convert input to output
return output;
}
module.exports = {
format: format
};
and then imported it as a module
import formatter from '../services/formatter.service';
//then in component
render() {
return formatter.format(this.props.data);
}
Two methods:
1:
var a = new Date()
// no_of_days is an integer value
var b = new Date(a.setTime(a.getTime() + no_of_days * 86400000)
2: Similar to the previous method
var a = new Date()
// no_of_days is an integer value
var b = new Date(a.setDate(a.getDate() + no_of_days)
git clone <url> --branch <branch> --single-branch
Just put in URL and branch name.
I had a similar problem, but in my case, I have content in my div that height-wise will exceed the boundaries of the parent div. When it does, I want it to auto-scroll. I was able to accomplish this by using
.vscrolling_container { height: 100%; overflow: auto; }
What is it?
Javascript is a prototypal language which means it uses prototypes for 'inheritance'. the instanceof
operator tests if a constructor function's prototype
propertype is present in the __proto__
chain of an object. This means that it will do the following (assuming that testObj is a function object):
obj instanceof testObj;
obj.__proto__ === testObj.prototype
>> if this is true
instanceof
will return true
.obj.__proto__.__proto__ === testObj.prototype
>> if this is true
instanceof
will return true
.testObj.prototype
then instanceof
operator will return false
.function Person(name) {_x000D_
this.name = name;_x000D_
}_x000D_
var me = new Person('Willem');_x000D_
_x000D_
console.log(me instanceof Person); // true_x000D_
// because: me.__proto__ === Person.prototype // evaluates true_x000D_
_x000D_
console.log(me instanceof Object); // true_x000D_
// because: me.__proto__.__proto__ === Object.prototype // evaluates true_x000D_
_x000D_
console.log(me instanceof Array); // false_x000D_
// because: Array is nowhere on the prototype chain
_x000D_
What problems does it solve?
It solved the problem of conveniently checking if an object derives from a certain prototype. For example, when a function recieves an object which can have various prototypes. Then, before using methods from the prototype chain, we can use the instanceof
operator to check whether the these methods are on the object.
function Person1 (name) {_x000D_
this.name = name;_x000D_
}_x000D_
_x000D_
function Person2 (name) {_x000D_
this.name = name;_x000D_
}_x000D_
_x000D_
Person1.prototype.talkP1 = function () {_x000D_
console.log('Person 1 talking');_x000D_
}_x000D_
_x000D_
Person2.prototype.talkP2 = function () {_x000D_
console.log('Person 2 talking');_x000D_
}_x000D_
_x000D_
_x000D_
function talk (person) {_x000D_
if (person instanceof Person1) {_x000D_
person.talkP1();_x000D_
}_x000D_
_x000D_
if (person instanceof Person2) {_x000D_
person.talkP2();_x000D_
}_x000D_
_x000D_
_x000D_
}_x000D_
_x000D_
const pers1 = new Person1 ('p1');_x000D_
const pers2 = new Person2 ('p2');_x000D_
_x000D_
talk(pers1);_x000D_
talk(pers2);
_x000D_
Here in the talk()
function first is checked if the prototype is located on the object. After this the appropriate method is picked to execute. Not doing this check could result in executing a method which doesn't exist and thus a reference error.
When is it appropriate and when not?
We kind of already went over this. Use it when you are in need of checking the prototype of an object before doing something with it.
There is a more simple command to fix this error.
Just simply add after yourImageView.setBitmap(bitmap); this yourImageView.setRotation(90);
This fixed mine. Hope it helps !
This has been so frustrating, My problem was that within a newly constructed conda python36 environment, jupyter refused to load “seaborn” - even though seaborn was installed within that environment. It seemed to be able to import plenty of other files from the same environment — for example numpy and pandas but just not seaborn. I tried many of the fixes suggested here and on other threads without success. Until I realised that Jupyter was not running kernel python from within that environment but running the system python as kernel. Even though a decent looking kernel and kernel.json were already present in the environment. It was only after reading this part of the ipython documentation: https://ipython.readthedocs.io/en/latest/install/kernel_install.html#kernels-for-different-environments and using these commands:
source activate other-env
python -m ipykernel install --user --name other-env --display-name "Python (other-env)"
I was able to get everything going nicely. (I didn’t actually use the —user variable).
One thing I have not yet figured is how to set the default python to be the "Python (other-env)" one. At present an existing .ipynb file opened from the Home screen will use the system python. I have to use the Kernel menu “Change kernel” to select the environment python.