A custom action can handle this problem. And I found that it is not so complicated.
is_set = set() #global set reference
class IsStored(argparse.Action):
def __call__(self, parser, namespace, values, option_string=None):
is_set.add(self.dest) # save to global reference
setattr(namespace, self.dest + '_set', True) # or you may inject directly to namespace
setattr(namespace, self.dest, values) # implementation of store_action
# You cannot inject directly to self.dest until you have a custom class
parser.add_argument("--myarg", type=int, default=1, action=IsStored)
params = parser.parse_args()
print(params.myarg, 'myarg' in is_set)
print(hasattr(params, 'myarg_set'))
I recommend using neither a DATETIME or a TIMESTAMP field. If you want to represent a specific day as a whole (like a birthday), then use a DATE type, but if you're being more specific than that, you're probably interested in recording an actual moment as opposed to a unit of time (day,week,month,year). Instead of using a DATETIME or TIMESTAMP, use a BIGINT, and simply store the number of milliseconds since the epoch (System.currentTimeMillis() if you're using Java). This has several advantages:
This issue is closely related how you should store a money value (i.e. $1.99) in a database. Should you use a Decimal, or the database's Money type, or worst of all a Double? All 3 of these options are terrible, for many of the same reasons listed above. The solution is to store the value of money in cents using BIGINT, and then convert cents to dollars when you display the value to the user. The database's job is to store data, and NOT to intrepret that data. All these fancy data-types you see in databases(especially Oracle) add little, and start you down the road to vendor lock-in.
if in string:
string yourVar = yourTextBoxname.Text;
if in numbers:
int yourVar = int.Parse(yourTextBoxname.Text);
To find files accessed 1, 2, or 3 minutes ago use -3
find . -cmin -3
I got a working solulion using the answers from @John and @Arpad link and @RobWinch link
I use Spring Security 3.2.9 and jQuery 1.10.2.
Extend Spring's class to cause 4XX response only from AJAX requests:
public class CustomLoginUrlAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint {
public CustomLoginUrlAuthenticationEntryPoint(final String loginFormUrl) {
super(loginFormUrl);
}
// For AJAX requests for user that isn't logged in, need to return 403 status.
// For normal requests, Spring does a (302) redirect to login.jsp which the browser handles normally.
@Override
public void commence(final HttpServletRequest request,
final HttpServletResponse response,
final AuthenticationException authException)
throws IOException, ServletException {
if ("XMLHttpRequest".equals(request.getHeader("X-Requested-With"))) {
response.sendError(HttpServletResponse.SC_FORBIDDEN, "Access Denied");
} else {
super.commence(request, response, authException);
}
}
}
applicationContext-security.xml
<security:http auto-config="false" use-expressions="true" entry-point-ref="customAuthEntryPoint" >
<security:form-login login-page='/login.jsp' default-target-url='/index.jsp'
authentication-failure-url="/login.jsp?error=true"
/>
<security:access-denied-handler error-page="/errorPage.jsp"/>
<security:logout logout-success-url="/login.jsp?logout" />
...
<bean id="customAuthEntryPoint" class="com.myapp.utils.CustomLoginUrlAuthenticationEntryPoint" scope="singleton">
<constructor-arg value="/login.jsp" />
</bean>
...
<bean id="requestCache" class="org.springframework.security.web.savedrequest.HttpSessionRequestCache">
<property name="requestMatcher">
<bean class="org.springframework.security.web.util.matcher.NegatedRequestMatcher">
<constructor-arg>
<bean class="org.springframework.security.web.util.matcher.MediaTypeRequestMatcher">
<constructor-arg>
<bean class="org.springframework.web.accept.HeaderContentNegotiationStrategy"/>
</constructor-arg>
<constructor-arg value="#{T(org.springframework.http.MediaType).APPLICATION_JSON}"/>
<property name="useEquals" value="true"/>
</bean>
</constructor-arg>
</bean>
</property>
</bean>
In my JSPs, add a global AJAX error handler as shown here
$( document ).ajaxError(function( event, jqxhr, settings, thrownError ) {
if ( jqxhr.status === 403 ) {
window.location = "login.jsp";
} else {
if(thrownError != null) {
alert(thrownError);
} else {
alert("error");
}
}
});
Also, remove existing error handlers from AJAX calls in JSP pages:
var str = $("#viewForm").serialize();
$.ajax({
url: "get_mongoDB_doc_versions.do",
type: "post",
data: str,
cache: false,
async: false,
dataType: "json",
success: function(data) { ... },
// error: function (jqXHR, textStatus, errorStr) {
// if(textStatus != null)
// alert(textStatus);
// else if(errorStr != null)
// alert(errorStr);
// else
// alert("error");
// }
});
I hope it helps others.
Update1 I found that I needed to add the option (always-use-default-target="true") to the form-login config. This was needed since after an AJAX request gets redirected to the login page (due to expired session), Spring remembers the previous AJAX request and auto redirects to it after login. This causes the returned JSON to be displayed on the browser page. Of course, not what I want.
Update2
Instead of using always-use-default-target="true"
, use @RobWinch example of blocking AJAX requests from the requstCache. This allows normal links to be redirected to their original target after login, but AJAX go to the home page after login.
Reference to above link i added 1 new thing called show 4 at time, slide one at a time for bootstrap 3 (v3.3.7)
CODEPLY:- https://www.codeply.com/go/eWUbGlspqU
LIVE SNIPPET
(function(){_x000D_
$('#carousel123').carousel({ interval: 2000 });_x000D_
}());_x000D_
_x000D_
(function(){_x000D_
$('.carousel-showmanymoveone .item').each(function(){_x000D_
var itemToClone = $(this);_x000D_
_x000D_
for (var i=1;i<4;i++) {_x000D_
itemToClone = itemToClone.next();_x000D_
_x000D_
// wrap around if at end of item collection_x000D_
if (!itemToClone.length) {_x000D_
itemToClone = $(this).siblings(':first');_x000D_
}_x000D_
_x000D_
// grab item, clone, add marker class, add to collection_x000D_
itemToClone.children(':first-child').clone()_x000D_
.addClass("cloneditem-"+(i))_x000D_
.appendTo($(this));_x000D_
}_x000D_
});_x000D_
}());
_x000D_
body {_x000D_
margin-top: 50px;_x000D_
}_x000D_
_x000D_
.carousel-showmanymoveone .carousel-control {_x000D_
width: 4%;_x000D_
background-image: none;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-control.left {_x000D_
margin-left: 15px;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-control.right {_x000D_
margin-right: 15px;_x000D_
}_x000D_
.carousel-showmanymoveone .cloneditem-1,_x000D_
.carousel-showmanymoveone .cloneditem-2,_x000D_
.carousel-showmanymoveone .cloneditem-3 {_x000D_
display: none;_x000D_
}_x000D_
@media all and (min-width: 768px) {_x000D_
.carousel-showmanymoveone .carousel-inner > .active.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .prev {_x000D_
left: -50%;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .active.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .next {_x000D_
left: 50%;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .left,_x000D_
.carousel-showmanymoveone .carousel-inner > .prev.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .active {_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner .cloneditem-1 {_x000D_
display: block;_x000D_
}_x000D_
}_x000D_
@media all and (min-width: 768px) and (transform-3d), all and (min-width: 768px) and (-webkit-transform-3d) {_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.next {_x000D_
-webkit-transform: translate3d(50%, 0, 0);_x000D_
transform: translate3d(50%, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.prev {_x000D_
-webkit-transform: translate3d(-50%, 0, 0);_x000D_
transform: translate3d(-50%, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .item.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.prev.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active {_x000D_
-webkit-transform: translate3d(0, 0, 0);_x000D_
transform: translate3d(0, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
}_x000D_
@media all and (min-width: 992px) {_x000D_
.carousel-showmanymoveone .carousel-inner > .active.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .prev {_x000D_
left: -25%;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .active.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .next {_x000D_
left: 25%;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .left,_x000D_
.carousel-showmanymoveone .carousel-inner > .prev.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .active {_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner .cloneditem-2,_x000D_
.carousel-showmanymoveone .carousel-inner .cloneditem-3 {_x000D_
display: block;_x000D_
}_x000D_
}_x000D_
@media all and (min-width: 992px) and (transform-3d), all and (min-width: 992px) and (-webkit-transform-3d) {_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.next {_x000D_
-webkit-transform: translate3d(25%, 0, 0);_x000D_
transform: translate3d(25%, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.prev {_x000D_
-webkit-transform: translate3d(-25%, 0, 0);_x000D_
transform: translate3d(-25%, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
.carousel-showmanymoveone .carousel-inner > .item.left,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.prev.right,_x000D_
.carousel-showmanymoveone .carousel-inner > .item.active {_x000D_
-webkit-transform: translate3d(0, 0, 0);_x000D_
transform: translate3d(0, 0, 0);_x000D_
left: 0;_x000D_
}_x000D_
}
_x000D_
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">_x000D_
_x000D_
<div class="carousel carousel-showmanymoveone slide" id="carousel123">_x000D_
<div class="carousel-inner">_x000D_
<div class="item active">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/0054A6/fff/&text=1" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/002d5a/fff/&text=2" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/d6d6d6/333&text=3" class="img-responsive"></a></div>_x000D_
</div> _x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/002040/eeeeee&text=4" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/0054A6/fff/&text=5" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/002d5a/fff/&text=6" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/eeeeee&text=7" class="img-responsive"></a></div>_x000D_
</div>_x000D_
<div class="item">_x000D_
<div class="col-xs-12 col-sm-6 col-md-3"><a href="#"><img src="http://placehold.it/500/40a1ff/002040&text=8" class="img-responsive"></a></div>_x000D_
</div>_x000D_
</div>_x000D_
<a class="left carousel-control" href="#carousel123" data-slide="prev"><i class="glyphicon glyphicon-chevron-left"></i></a>_x000D_
<a class="right carousel-control" href="#carousel123" data-slide="next"><i class="glyphicon glyphicon-chevron-right"></i></a>_x000D_
</div>_x000D_
_x000D_
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>_x000D_
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
_x000D_
Check out the complete solution here:
http://www.w3schools.com/bootstrap/tryit.asp?filename=trybs_ref_js_modal_show&stacked=h
Make sure to put libraries in required order to get result:
1- First bootstrap.min.css 2- jquery.min.js 3- bootstrap.min.js
(In other words jquery.min.js must be call before bootstrap.min.js)
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js">
</script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
There are two cases in which this error is raised.
You can use the following way to get the unique data as per your need as follows,
$data = $ad->getcodes()->get()->unique('email');
$count = $data->count();
Hope this will work.
You could do:
radio1.SelectedIndex = 1;
But this is the most simple form and would most likely become problematic as your UI grows. Say, for instance, if a team member inserts an item in the RadioButtonList
above option2
but doesn't know we use magic numbers in code-behind to select - now the app selects the wrong index!
Maybe you want to look into using FindControl in order to determine the ListItem
actually required, by name, and selecting appropriately. For instance:
//omitting possible null reference checks...
var wantedOption = radio1.FindControl("option2").Selected = true;
you can use your method by this way
var app = 'AirFare';
var d1 = new Date();
var d2 = new Date();
$http({
url: '/api/apiControllerName/methodName',
method: 'POST',
params: {application:app, from:d1, to:d2},
headers: { 'Content-Type': 'application/json;charset=utf-8' },
//timeout: 1,
//cache: false,
//transformRequest: false,
//transformResponse: false
}).then(function (results) {
return results;
}).catch(function (e) {
});
well you are returning an array of items from the database. so you need something like this.
$dave= mysql_query("SELECT order_date, no_of_items, shipping_charge,
SUM(total_order_amount) as test FROM `orders`
WHERE DATE(`order_date`) = DATE(NOW()) GROUP BY DATE(`order_date`)")
or die(mysql_error());
while ($row = mysql_fetch_assoc($dave)) {
echo $row['order_date'];
echo $row['no_of_items'];
echo $row['shipping_charge'];
echo $row['test '];
}
From the keytool man - it imports certificate chain, if input is given in PKCS#7 format, otherwise only the single certificate is imported. You should be able to convert certificates to PKCS#7 format with openssl, via openssl crl2pkcs7 command.
I solved this issue by using
Service.setSslSecurityProtocol(SSLSecurityProtocol.TLSv1_2);
Whether or not the "date" '0000-00-00" is a valid "date" is irrelevant to the question. "Just change the database" is seldom a viable solution.
Facts:
So, if I "just change the database", thousands of lines of PHP code will break.
Java programmers need to accept the MySQL zero-date and they need to put a zero date back into the database, when other languages rely on this "feature".
A programmer connecting to MySQL needs to handle null and 0000-00-00 as well as valid dates. Changing 0000-00-00 to null is not a viable option, because then you can no longer determine if the date was expected to be 0000-00-00 for writing back to the database.
For 0000-00-00, I suggest checking the date value as a string, then changing it to ("y",1), or ("yyyy-MM-dd",0001-01-01), or into any invalid MySQL date (less than year 1000, iirc). MySQL has another "feature": low dates are automatically converted to 0000-00-00.
I realize my suggestion is a kludge. But so is MySQL's date handling. And two kludges don't make it right. The fact of the matter is, many programmers will have to handle MySQL zero-dates forever.
Try this in your Head section of the site:
$(function() {
$('.menu_box_list li').click(function() {
$('.menu_box_list li.active').removeClass('active');
$(this).addClass('active');
});
});
tested on IE11, FF53, GC58 :
onclick="var e=this;setTimeout(function(){e.disabled=true;},0);return true;"
Ctrl+ H, Select "File Search", indicate the "file name pattern", for example *.xml or *.java. And then select the scope "Workspace"
Add a Console.ReadKey
call to your program to force it to wait for you to press a key before exiting.
I had the same issue and here is how I manage to pass through:
In your case you have addToCount()
which is called. now to pass down a param when user clicks, you can say @click="addToCount(item.contactID)"
in your function implementation you can receive the params like:
addToCount(paramContactID){
// the paramContactID contains the value you passed into the function when you called it
// you can do what you want to do with the paramContactID in here!
}
PEP 8 is good, the only thing that i wish it came down harder on was the Tabs-vs-Spaces holy war.
Basically if you are starting a project in python, you need to choose Tabs or Spaces and then shoot all offenders on sight.
Things seems a little confused in the code in your question, so I am going to give you an example of what I think you are try to do.
First considerations are about mixing HTML, Javascript and CSS:
Why is using onClick() in HTML a bad practice?
I will be removing inline content and splitting these into their appropriate files.
Next, I am going to go with the "click" event and displose of the "change" event, as it is not clear that you want or need both.
Your function changeBackground
sets both the backround color and the text color to the same value (your text will not be seen), so I am caching the color value as we don't need to look it up in the DOM twice.
CSS
#TheForm {
margin-left: 396px;
}
#submitColor {
margin-left: 48px;
margin-top: 5px;
}
HTML
<form id="TheForm">
<input id="color" type="text" />
<br/>
<input id="submitColor" value="Submit" type="button" />
</form>
<span id="coltext">This text should have the same color as you put in the text box</span>
Javascript
function changeBackground() {
var color = document.getElementById("color").value; // cached
// The working function for changing background color.
document.bgColor = color;
// The code I'd like to use for changing the text simultaneously - however it does not work.
document.getElementById("coltext").style.color = color;
}
document.getElementById("submitColor").addEventListener("click", changeBackground, false);
On jsfiddle
Source: w3schools
CSS colors are defined using a hexadecimal (hex) notation for the combination of Red, Green, and Blue color values (RGB). The lowest value that can be given to one of the light sources is 0 (hex 00). The highest value is 255 (hex FF).
Hex values are written as 3 double digit numbers, starting with a # sign.
Update: as pointed out by @Ian
Hex can be either 3 or 6 characters long
Source: W3C
The format of an RGB value in hexadecimal notation is a ‘#’ immediately followed by either three or six hexadecimal characters. The three-digit RGB notation (#rgb) is converted into six-digit form (#rrggbb) by replicating digits, not by adding zeros. For example, #fb0 expands to #ffbb00. This ensures that white (#ffffff) can be specified with the short notation (#fff) and removes any dependencies on the color depth of the display.
Here is an alternative function that will check that your input is a valid CSS Hex Color, it will set the text color only or throw an alert if it is not valid.
For regex testing, I will use this pattern
/^#(?:[0-9a-f]{3}){1,2}$/i
but if you were regex matching and wanted to break the numbers into groups then you would require a different pattern
function changeBackground() {
var color = document.getElementById("color").value.trim(),
rxValidHex = /^#(?:[0-9a-f]{3}){1,2}$/i;
if (rxValidHex.test(color)) {
document.getElementById("coltext").style.color = color;
} else {
alert("Invalid CSS Hex Color");
}
}
document.getElementById("submitColor").addEventListener("click", changeBackground, false);
On jsfiddle
Here is a further modification that will allow colours by name along with by hex.
function changeBackground() {
var names = ["AliceBlue", "AntiqueWhite", "Aqua", "Aquamarine", "Azure", "Beige", "Bisque", "Black", "BlanchedAlmond", "Blue", "BlueViolet", "Brown", "BurlyWood", "CadetBlue", "Chartreuse", "Chocolate", "Coral", "CornflowerBlue", "Cornsilk", "Crimson", "Cyan", "DarkBlue", "DarkCyan", "DarkGoldenRod", "DarkGray", "DarkGrey", "DarkGreen", "DarkKhaki", "DarkMagenta", "DarkOliveGreen", "Darkorange", "DarkOrchid", "DarkRed", "DarkSalmon", "DarkSeaGreen", "DarkSlateBlue", "DarkSlateGray", "DarkSlateGrey", "DarkTurquoise", "DarkViolet", "DeepPink", "DeepSkyBlue", "DimGray", "DimGrey", "DodgerBlue", "FireBrick", "FloralWhite", "ForestGreen", "Fuchsia", "Gainsboro", "GhostWhite", "Gold", "GoldenRod", "Gray", "Grey", "Green", "GreenYellow", "HoneyDew", "HotPink", "IndianRed", "Indigo", "Ivory", "Khaki", "Lavender", "LavenderBlush", "LawnGreen", "LemonChiffon", "LightBlue", "LightCoral", "LightCyan", "LightGoldenRodYellow", "LightGray", "LightGrey", "LightGreen", "LightPink", "LightSalmon", "LightSeaGreen", "LightSkyBlue", "LightSlateGray", "LightSlateGrey", "LightSteelBlue", "LightYellow", "Lime", "LimeGreen", "Linen", "Magenta", "Maroon", "MediumAquaMarine", "MediumBlue", "MediumOrchid", "MediumPurple", "MediumSeaGreen", "MediumSlateBlue", "MediumSpringGreen", "MediumTurquoise", "MediumVioletRed", "MidnightBlue", "MintCream", "MistyRose", "Moccasin", "NavajoWhite", "Navy", "OldLace", "Olive", "OliveDrab", "Orange", "OrangeRed", "Orchid", "PaleGoldenRod", "PaleGreen", "PaleTurquoise", "PaleVioletRed", "PapayaWhip", "PeachPuff", "Peru", "Pink", "Plum", "PowderBlue", "Purple", "Red", "RosyBrown", "RoyalBlue", "SaddleBrown", "Salmon", "SandyBrown", "SeaGreen", "SeaShell", "Sienna", "Silver", "SkyBlue", "SlateBlue", "SlateGray", "SlateGrey", "Snow", "SpringGreen", "SteelBlue", "Tan", "Teal", "Thistle", "Tomato", "Turquoise", "Violet", "Wheat", "White", "WhiteSmoke", "Yellow", "YellowGreen"],
color = document.getElementById("color").value.trim(),
rxValidHex = /^#(?:[0-9a-f]{3}){1,2}$/i,
formattedName = color.charAt(0).toUpperCase() + color.slice(1).toLowerCase();
if (names.indexOf(formattedName) !== -1 || rxValidHex.test(color)) {
document.getElementById("coltext").style.color = color;
} else {
alert("Invalid CSS Color");
}
}
document.getElementById("submitColor").addEventListener("click", changeBackground, false);
On jsfiddle
You can manually set xticks (and yticks) using pyplot.xticks:
import matplotlib.pyplot as plt
import numpy as np
x = np.array([0,1,2,3])
y = np.array([20,21,22,23])
my_xticks = ['John','Arnold','Mavis','Matt']
plt.xticks(x, my_xticks)
plt.plot(x, y)
plt.show()
If you are using Jackson to deserialize the response body, one very simple solution is to use request.getResponseBodyAsStream()
instead of request.getResponseBodyAsString()
A better solution is to use the array_filter
function:
$display_related_tags =
array_filter($display_related_tags, function($e) use($found_tag){
return $e != $found_tag['name'];
});
As the php documentation reads:
As foreach relies on the internal array pointer in PHP 5, changing it within the loop may lead to unexpected behavior.
In PHP 7, foreach does not use the internal array pointer.
Like this
DECLARE @date DATETIME
SET @date = '2011-09-28 18:01:00'
select convert(varchar, @date,105) + ' ' + convert(varchar, @date,108)
First you need to use this command
npm config set registry https://registry.your-registry.npme.io/
This we are doing to set our companies Enterprise registry as our default registry.
You can try other given solutions also.
If you set the style table-layout: fixed;
on your table, you can override the browser's automatic column resizing. The browser will then set column widths based on the width of cells in the first row of the table. Change your <thead>
to <caption>
and remove the <td>
inside of it, and then set fixed widths for the cells in <tbody>
.
Another source of this error is that you have 2 or more same table names which have the same foreign key names. This sometimes happens to people who use modelling and design software, like Mysql Workbench, and later generate the script from the design.
You can use the append function to add another element to it. Only, make a series of the new element, before you append it:
test = test.append(pd.Series(200, index=[101]))
If you follow the steps advised in several tutorials I linked in this answer, you can get the desired effect without the somewhat complicated "manual" steps in Walker's and Vinay's answers. If you're on Ubuntu:
sudo apt-get install python-pip python-dev
The equivalent is achieved in OS X by using homebrew to install python (more details here).
brew install python
With pip
installed, you can use it to get the remaining packages (you can omit sudo
in OS X, as you're using your local python installation).
sudo pip install virtualenvwrapper
(these are the only packages you need installed globally and I doubt that it will clash with anything system-level from the OS. If you want to be super-safe, you can keep the distro's versions sudo apt-get install virtualenvwrapper
)
Note: in Ubuntu 14.04 I receive some errors with pip install, so I use pip3 install virtualenv virtualenvwrapper
and add VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
to my .bashrc/.zshrc
file.
You then append to your .bashrc
file
export WORKON_HOME
source /usr/local/bin/virtualenvwrapper.sh
and source it
. ~/.bashrc
This is basically it. Now the only decision is whether you want to create a virtualenv to include system-level packages
mkvirtualenv --system-site-packages foo
where your existing system packages don't have to be reinstalled, they are symlinked to the system interpreter's versions. Note: you can still install new packages and upgrade existing included-from-system packages without sudo - I tested it and it works without any disruptions of the system interpreter.
kermit@hocus-pocus:~$ sudo apt-get install python-pandas
kermit@hocus-pocus:~$ mkvirtualenv --system-site-packages s
(s)kermit@hocus-pocus:~$ pip install --upgrade pandas
(s)kermit@hocus-pocus:~$ python -c "import pandas; print(pandas.__version__)"
0.10.1
(s)kermit@hocus-pocus:~$ deactivate
kermit@hocus-pocus:~$ python -c "import pandas; print(pandas.__version__)"
0.8.0
The alternative, if you want a completely separated environment, is
mkvirtualenv --no-site-packages bar
or given that this is the default option, simply
mkvirtualenv bar
The result is that you have a new virtualenv where you can freely and sudolessly install your favourite packages
pip install flask
You have an old password in the settings.xml
. It is trying to connect to the repositories, but is not able to, since the password is not updated. Once you update and re-run the command, you should be good.
<?php
list($width, $height) = getimagesize("http://site.com/image.png");
$arr = array('h' => $height, 'w' => $width );
?>
Update: AdoptOpenJDK has changed its name to Adoptium, as part of its move to the Eclipse Foundation.
Difference between OpenJDK and AdoptOpenJDK
The first provides source-code, the other provides builds of that source-code.
Adoptium of the Eclipse Foundation, formerly known as AdoptOpenJDK, is only one of several vendors distributing implementations of the Java platform. These include:
See this flowchart of mine to help guide you in picking a vendor for an implementation of the Java platform. Click/tap to zoom.
Another resource: This comparison matrix by Azul Systems is useful, and seems true and fair to my mind.
Here is a list of considerations and motivations to consider in choosing a vendor and implementation.
Some vendors offer you a choice of JIT technologies.
To understand more about this Java ecosystem, read Java Is Still Free
$timestamp = strtotime('today midnight');
is the same as
$timestamp = strtotime('today');
and it's a little less work on your server.
with factory
/ service
/ provider
:
var myApp = angular.module('myApp', []);
//service style, probably the simplest one
myApp.service('helloWorldFromService', function() {
this.sayHello = function() {
return "Hello, World!"
};
});
//factory style, more involved but more sophisticated
myApp.factory('helloWorldFromFactory', function() {
return {
sayHello: function() {
return "Hello, World!"
}
};
});
//provider style, full blown, configurable version
myApp.provider('helloWorld', function() {
// In the provider function, you cannot inject any
// service or factory. This can only be done at the
// "$get" method.
this.name = 'Default';
this.$get = function() {
var name = this.name;
return {
sayHello: function() {
return "Hello, " + name + "!"
}
}
};
this.setName = function(name) {
this.name = name;
};
});
//hey, we can configure a provider!
myApp.config(function(helloWorldProvider){
helloWorldProvider.setName('World');
});
function MyCtrl($scope, helloWorld, helloWorldFromFactory, helloWorldFromService) {
$scope.hellos = [
helloWorld.sayHello(),
helloWorldFromFactory.sayHello(),
helloWorldFromService.sayHello()];
}?
try ORDER BY MONTH(Date),DAY(DATE)
Try this:
ORDER BY YEAR(Date) DESC, MONTH(Date) DESC, DAY(DATE) DESC
Worked perfectly on a JET DB.
example:
AliceBlue
AntiqueWhite
Aqua
Aquamarine
Beige
Replcae \n with ","
AliceBlue","AntiqueWhite","Aqua","Aquamarine","Beige
Now append "(double-quote) at the start and end
"AliceBlue","AntiqueWhite","Aqua","Aquamarine","Beige"
If your text contains blank lines in between you can use regular expression \n+ instead of \n
example:
AliceBlue
AntiqueWhite
Aqua
Aquamarine
Beige
Replcae \n+ with "," (in regex mode)
AliceBlue","AntiqueWhite","Aqua","Aquamarine","Beige
Now append "(double-quote) at the start and end
"AliceBlue","AntiqueWhite","Aqua","Aquamarine","Beige"
It may be overkill but you can try this:
// Form calling named route with hidden token field added.
<form method="POST" action="{{ route('foo') }}" >
@csrf
<input type="hidden" name="_token" value="{!! csrf_token() !!}">
<input type="text" name="name"/><br/>
<input type="submit" value="Add"/>
</form>
// Named Route
Route::post('/foo', function () {
return 'bar';
})->name('foo');
// Add this within the <head></head>
block:
<meta name="_token" content="{!! csrf_token() !!}" />
I did test it on my local using Homestead on Laravel 5.7 which was was fresh install using Laravel Installer 2.0.1 and it worked. What is your environment?
Theory: I wonder if that has something to do with blade rendering html tags with {{ }}
vs. {!! !!}
on your environment or how you are serving it (eg. php artisan serve
). What makes me think that is line 335
of /vendor/laravel/framework/src/illuminate/Foundation/helpers.php
should render the same line manually typed out above.
When you return value from server to jQuery's Ajax call you can also use the below code to indicate a server error:
return StatusCode(500, "My error");
Or
return StatusCode((int)HttpStatusCode.InternalServerError, "My error");
Or
Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return Json(new { responseText = "my error" });
Codes other than Http Success codes (e.g. 200[OK]) will trigger the function in front of error:
in client side (ajax).
you can have ajax call like:
$.ajax({
type: "POST",
url: "/General/ContactRequestPartial",
data: {
HashId: id
},
success: function (response) {
console.log("Custom message : " + response.responseText);
}, //Is Called when Status Code is 200[OK] or other Http success code
error: function (jqXHR, textStatus, errorThrown) {
console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
}, //Is Called when Status Code is 500[InternalServerError] or other Http Error code
})
Additionally you can handle different HTTP errors from jQuery side like:
$.ajax({
type: "POST",
url: "/General/ContactRequestPartial",
data: {
HashId: id
},
statusCode: {
500: function (jqXHR, textStatus, errorThrown) {
console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
501: function (jqXHR, textStatus, errorThrown) {
console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
}
})
statusCode:
is useful when you want to call different functions for different status codes that you return from server.
You can see list of different Http Status codes here:Wikipedia
Additional resources:
Not a valid floating-point value (e.g. the result of division by zero)
nameofcombobox.SelectedItem=-1;
See the query below (assumed @dt1 >= @dt2);
Declare @dt1 datetime = '2013-7-3'
Declare @dt2 datetime = '2013-5-2'
select abs(DATEDIFF(DD, @dt2, @dt1)) Days,
case when @dt1 >= @dt2
then case when DAY(@dt2)<=DAY(@dt1)
then Convert(varchar, DATEDIFF(MONTH, @dt2, @dt1)) + CONVERT(varchar, ' Month(s) ') + Convert(varchar, DAY(@dt1)-DAY(@dt2)) + CONVERT(varchar, 'Day(s).')
else Convert(varchar, DATEDIFF(MONTH, @dt2, @dt1)-1) + CONVERT(varchar, ' Month(s) ') + convert(varchar, abs(DATEDIFF(DD, @dt1, DateAdd(Month, -1, @dt1))) - (DAY(@dt2)-DAY(@dt1))) + CONVERT(varchar, 'Day(s).')
end
else 'See asumption: @dt1 must be >= @dt2'
end In_Months_Days
Returns:
Days | In_Months_Days
62 | 2 Month(s) 1Day(s).
If the value type is already double, then update the value with $set command can not change the value type double to int when using NumberInt() or NumberLong() function. So, to Change the value type, it must update the whole record.
var re = db.data.find({"name": "zero"})
re['value']=NumberInt(0)
db.data.update({"name": "zero"}, re)
Expanding on the answers of Anne and JosephH, using perl in a short perl script, since i'm too lazy to type the perl-one-liner very time.
Create a file, named for example "unix2dos.pl" and put it in a directory in your path. Edit the file to contain the 2 lines:
#!/usr/bin/perl -wpi
s/\n|\r\n/\r\n/g;
Assuming that "which perl" returns "/usr/bin/perl" on your system. Make the file executable (chmod u+x unix2dos.pl).
Example:
$ echo "hello" > xxx
$ od -c xxx (checking that the file ends with a nl)
0000000 h e l l o \n
$ unix2dos.pl xxx
$ od -c xxx (checking that it ends now in cr lf)
0000000 h e l l o \r \n
If you are using jsvc to run tomcat as tomcat (run /etc/init.d/tomcat
as root), edit /etc/init.d/tomcat
and add $CATALINA_HOME/bin/tomcat-juli.jar
to CLASSPATH
.
I used Android database delete method and database removed successfully
public bool DeleteDatabase()
{
var dbName = "TenderDb.db";
var documentDirectoryPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
var path = Path.Combine(documentDirectoryPath, dbName);
return Android.Database.Sqlite.SQLiteDatabase.DeleteDatabase(new Java.IO.File(path));
}
You never give any value to your strings in main
so they are empty, and thus obviously the function returns an empty string.
Replace:
string str1, str2, str3;
with:
string str1 = "the dog jumped over the fence";
string str2 = "the";
string str3 = "that";
Also, you have several problems in your replaceSubstring
function:
int index = s1.find(s2, 0);
s1.replace(index, s2.length(), s3);
std::string::find
returns a std::string::size_type
(aka. size_t
) not an int
. Two differences: size_t
is unsigned, and it's not necessarily the same size as an int
depending on your platform (eg. on 64 bits Linux or Windows size_t
is unsigned 64 bits while int
is signed 32 bits).s2
is not part of s1
? I'll leave it up to you to find how to fix that. Hint: std::string::npos
;)This is actually an area ripe for discussion, with many subtle techniques available. It is important that you select/develop a technique that meets your needs including: screen readers, images/css/scripting on/off combinations, seo, etc.
Here are some good resources to get started down the road of standardista image replacement techniques:
http://faq.css-standards.org/Image_Replacement
Way to do it for an individual thing:
alter schema dbo transfer jonathan.MovieData
If your backend support CORS, you probably need to add to your request this header:
headers: {"Access-Control-Allow-Origin": "*"}
[Update] Access-Control-Allow-Origin is a response header - so in order to enable CORS - you need to add this header to the response from your server.
But for the most cases better solution would be configuring the reverse proxy, so that your server would be able to redirect requests from the frontend to backend, without enabling CORS.
You can find documentation about CORS mechanism here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS
I had this problem too. Doing alt+enter and then asking to either re-run or disable Spring inspection on the effected line fixed it. This only seems to have become an issue after the 13.4 update.
I'm just starting to use EC2 myself so not an expert, but Amazon's own documentation says:
we recommend that you use the local instance store for temporary data and, for data requiring a higher level of durability, we recommend using Amazon EBS volumes or backing up the data to Amazon S3.
Emphasis mine.
I do more data analysis than web hosting, so persistence doesn't matter as much to me as it might for a web site. Given the distinction made by Amazon itself, I wouldn't assume that EBS is right for everyone.
I'll try to remember to weigh in again after I've used both.
While the original question may not have been specific to a web service, here is a complete testWebService you can add to display a web service non-cached response plus the file version. We use file version instead of assembly version because we want to know a version, but with all assembly versions 1.0.0.0, the web site can be easily patched (signing and demand link still active!). Replace @Class@ with the name of the web api controller this service is embedded in. It's good for a go/nogo on a web service plus a quick version check.
[Route("api/testWebService")]
[AllowAnonymous]
[HttpGet]
public HttpResponseMessage TestWebService()
{
HttpResponseMessage responseMessage = Request.CreateResponse(HttpStatusCode.OK);
string loc = Assembly.GetAssembly(typeof(@Class@)).Location;
FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(loc);
responseMessage.Content = new StringContent($"<h2>The XXXXX web service GET test succeeded.</h2>{DateTime.Now}<br/><br/>File Version: {versionInfo.FileVersion}");
responseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
Request.RegisterForDispose(responseMessage);
return responseMessage;
}
I found it also necessary to add the following to web.config under configuration to make it truly anonymous
<location path="api/testwebservice">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
I find it frustrating that typeof
is so limited. Here’s an improved version:
var realtypeof = function (obj) {
switch (typeof(obj)) {
// object prototypes
case 'object':
if (obj instanceof Array)
return '[object Array]';
if (obj instanceof Date)
return '[object Date]';
if (obj instanceof RegExp)
return '[object regexp]';
if (obj instanceof String)
return '[object String]';
if (obj instanceof Number)
return '[object Number]';
return 'object';
// object literals
default:
return typeof(obj);
}
};
sample test:
realtypeof( '' ) // "string"
realtypeof( new String('') ) // "[object String]"
Object.prototype.toString.call("foo bar") //"[object String]"
The Database that we are using should be mentioned under search_path in Postgres SQL Configuration file. This can be done by editing Postgressql configuration file by setting search_path along with database name for example: TESTDB.
It worked for me after making the above change.
Next is used to pass control to the next middleware function. If not the request will be left hanging or open.
From Bjarne Stroustrup's C++11 FAQ:
The
enum class
es ("new enums", "strong enums") address three problems with traditional C++ enumerations:
- conventional enums implicitly convert to int, causing errors when someone does not want an enumeration to act as an integer.
- conventional enums export their enumerators to the surrounding scope, causing name clashes.
- the underlying type of an
enum
cannot be specified, causing confusion, compatibility problems, and makes forward declaration impossible.The new enums are "enum class" because they combine aspects of traditional enumerations (names values) with aspects of classes (scoped members and absence of conversions).
So, as mentioned by other users, the "strong enums" would make the code safer.
The underlying type of a "classic" enum
shall be an integer type large enough to fit all the values of the enum
; this is usually an int
. Also each enumerated type shall be compatible with char
or a signed/unsigned integer type.
This is a wide description of what an enum
underlying type must be, so each compiler will take decisions on his own about the underlying type of the classic enum
and sometimes the result could be surprising.
For example, I've seen code like this a bunch of times:
enum E_MY_FAVOURITE_FRUITS
{
E_APPLE = 0x01,
E_WATERMELON = 0x02,
E_COCONUT = 0x04,
E_STRAWBERRY = 0x08,
E_CHERRY = 0x10,
E_PINEAPPLE = 0x20,
E_BANANA = 0x40,
E_MANGO = 0x80,
E_MY_FAVOURITE_FRUITS_FORCE8 = 0xFF // 'Force' 8bits, how can you tell?
};
In the code above, some naive coder is thinking that the compiler will store the E_MY_FAVOURITE_FRUITS
values into an unsigned 8bit type... but there's no warranty about it: the compiler may choose unsigned char
or int
or short
, any of those types are large enough to fit all the values seen in the enum
. Adding the field E_MY_FAVOURITE_FRUITS_FORCE8
is a burden and doesn't forces the compiler to make any kind of choice about the underlying type of the enum
.
If there's some piece of code that rely on the type size and/or assumes that E_MY_FAVOURITE_FRUITS
would be of some width (e.g: serialization routines) this code could behave in some weird ways depending on the compiler thoughts.
And to make matters worse, if some workmate adds carelessly a new value to our enum
:
E_DEVIL_FRUIT = 0x100, // New fruit, with value greater than 8bits
The compiler doesn't complain about it! It just resizes the type to fit all the values of the enum
(assuming that the compiler were using the smallest type possible, which is an assumption that we cannot do). This simple and careless addition to the enum
could subtlety break related code.
Since C++11 is possible to specify the underlying type for enum
and enum class
(thanks rdb) so this issue is neatly addressed:
enum class E_MY_FAVOURITE_FRUITS : unsigned char
{
E_APPLE = 0x01,
E_WATERMELON = 0x02,
E_COCONUT = 0x04,
E_STRAWBERRY = 0x08,
E_CHERRY = 0x10,
E_PINEAPPLE = 0x20,
E_BANANA = 0x40,
E_MANGO = 0x80,
E_DEVIL_FRUIT = 0x100, // Warning!: constant value truncated
};
Specifying the underlying type if a field have an expression out of the range of this type the compiler will complain instead of changing the underlying type.
I think that this is a good safety improvement.
So Why is enum class preferred over plain enum?, if we can choose the underlying type for scoped(enum class
) and unscoped (enum
) enums what else makes enum class
a better choice?:
int
.FacesContext context = FacesContext.getCurrentInstance();
HttpServletResponse response = (HttpServletResponse)context.getExternalContext().getResponse();
response.sendRedirect("somePage.jsp");
You can use ReactDOMServer to render your component to HTML and then use this on jsPDF.
First do the imports:
import React from "react";
import ReactDOMServer from "react-dom/server";
import jsPDF from 'jspdf';
then:
var doc = new jsPDF();
doc.fromHTML(ReactDOMServer.renderToStaticMarkup(this.render()));
doc.save("myDocument.pdf");
Prefer to use:
renderToStaticMarkup
instead of:
renderToString
As the former include HTML code that react relies on.
For me, @joseluisq's answer yielded:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
But it worked this way:
$ mysql -u root@localhost -e "SHOW GLOBAL VARIABLES LIKE 'PORT';"
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
You want to try String.format("%f", d)
, which will print your double in decimal notation. Don't use BigDecimal
at all.
Regarding the precision issue: You are first storing 47.48
in the double c
, then making a new BigDecimal
from that double
. The loss of precision is in assigning to c
. You could do
BigDecimal b = new BigDecimal("47.48")
to avoid losing any precision.
<td style="border-bottom-style: solid; border-bottom: thick dotted #ff0000; ">
You can do the same to the whole row as well.
There is border-bottom-style
, border-top-style
,border-left-style
,border-right-style
. Or simply border-style
that apply to all four borders at once.
You can see (and TRY YOURSELF online) more details here
index.html
should be inside templates
, as I know. So, your second attempt looks correct.
But, as the error message says, index.html
looks like having some errors. E.g. the in the third line, the meta
tag should be actually head
tag, I think.
Range("C1:C10").Formula = "=A1+B1"
Simple as that.
It autofills (FillDown) the range with the formula.
You can use e.g. this API if you would like to see bitString presentation of your numbers. Uncommons Math
Example (in jruby)
bitString = org.uncommons.maths.binary.BitString.new(java.math.BigInteger.new("12").toString(2))
bitString.setBit(1, true)
bitString.toNumber => 14
edit: Changed api link and add a little example
You have an array, convert it to an object, something like:
data: [{"id": 3636, "is_default": true, "name": "Unit", "quantity": 1, "stock": "100000.00", "unit_cost": "0"}, {"id": 4592, "is_default": false, "name": "Bundle", "quantity": 5, "stock": "100000.00", "unit_cost": "0"}]
While the other posters addressed why is True
does what it does, I wanted to respond to this part of your post:
I thought Python treats anything with value as True. Why is this happening?
Coming from Java, I got tripped up by this, too. Python does not treat anything with a value as True
. Witness:
if 0:
print("Won't get here")
This will print nothing because 0 is treated as False
. In fact, zero of any numeric type evaluates to False
. They also made decimal
work the way you'd expect:
from decimal import *
from fractions import *
if 0 or 0.0 or 0j or Decimal(0) or Fraction(0, 1):
print("Won't get here")
Here are the other value which evaluate to False
:
if None or False or '' or () or [] or {} or set() or range(0):
print("Won't get here")
Sources:
You can do one thing.
like:- In appsettings.config ->
<appSettings>
<add key="SqlCommandTimeOut" value="240"/>
</appSettings>
In Code ->
command.CommandTimeout = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["SqlCommandTimeOut"]);
That should do it.
Note:- I faced most of the timeout issues when I used SqlHelper class from microsoft application blocks. If you have it in your code and are facing timeout problems its better you use sqlcommand and set its timeout as described above. For all other scenarios sqlhelper should do fine. If your client is ok with waiting a little longer than what sqlhelper class offers you can go ahead and use the above technique.
example:- Use this -
SqlCommand cmd = new SqlCommand(completequery);
cmd.CommandTimeout = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["SqlCommandTimeOut"]);
SqlConnection con = new SqlConnection(sqlConnectionString);
SqlDataAdapter adapter = new SqlDataAdapter();
con.Open();
adapter.SelectCommand = new SqlCommand(completequery, con);
adapter.Fill(ds);
con.Close();
Instead of
DataSet ds = new DataSet();
ds = SqlHelper.ExecuteDataset(sqlConnectionString, CommandType.Text, completequery);
Update: Also refer to @Triynko answer below. It is important to check that too.
Here is another solution. This function will take a single argument and appropriately quote it using the single-quote character, just as the voted answer above explains:
single_quote() {
local quoted="'"
local i=0
while [ $i -lt ${#1} ]; do
local ch="${1:i:1}"
if [[ "$ch" != "'" ]]; then
quoted="$quoted$ch"
else
local single_quotes="'"
local j=1
while [ $j -lt ${#1} ] && [[ "${1:i+j:1}" == "'" ]]; do
single_quotes="$single_quotes'"
((j++))
done
quoted="$quoted'\"$single_quotes\"'"
((i+=j-1))
fi
((i++))
done
echo "$quoted'"
}
So, you can use it this way:
single_quote "1 2 '3'"
'1 2 '"'"'3'"'"''
x="this text is quoted: 'hello'"
eval "echo $(single_quote "$x")"
this text is quoted: 'hello'
The rules of adding a PHP variable inside of any MySQL statement are plain and simple:
So as your example only involves data literals, then all variables must be added through placeholders (also called parameters). To do so:
And here is how to do it with all popular PHP database drivers:
Such a driver doesn't exist.
mysqli
$type = 'testing';
$reporter = "John O'Hara";
$query = "INSERT INTO contents (type, reporter, description)
VALUES(?, ?, 'whatever')";
$stmt = $mysqli->prepare($query);
$stmt->bind_param("ss", $type, $reporter);
$stmt->execute();
The code is a bit complicated but the detailed explanation of all these operators can be found in my article, How to run an INSERT query using Mysqli, as well as a solution that eases the process dramatically.
For a SELECT query you will need to add just a call to get_result()
method to get a familiar mysqli_result
from which you can fetch the data the usual way:
$reporter = "John O'Hara";
$stmt = $mysqli->prepare("SELECT * FROM users WHERE name=?");
$stmt->bind_param("s", $reporter);
$stmt->execute();
$result = $stmt->get_result();
$row = $result->fetch_assoc(); // or while (...)
$type = 'testing';
$reporter = "John O'Hara";
$query = "INSERT INTO contents (type, reporter, description)
VALUES(?, ?, 'whatever')";
$stmt = $pdo->prepare($query);
$stmt->execute([$type, $reporter]);
In PDO, we can have the bind and execute parts combined, which is very convenient. PDO also supports named placeholders which some find extremely convenient.
Sometimes we have to add a variable that represents another part of a query, such as a keyword or an identifier (a database, table or a field name). It's a rare case but it's better to be prepared.
In this case, your variable must be checked against a list of values explicitly written in your script. This is explained in my other article, Adding a field name in the ORDER BY clause based on the user's choice:
Unfortunately, PDO has no placeholder for identifiers (table and field names), therefore a developer must filter them out manually. Such a filter is often called a "white list" (where we only list allowed values) as opposed to a "black-list" where we list disallowed values.
So we have to explicitly list all possible variants in the PHP code and then choose from them.
Here is an example:
$orderby = $_GET['orderby'] ?: "name"; // set the default value
$allowed = ["name","price","qty"]; // the white list of allowed field names
$key = array_search($orderby, $allowed, true); // see if we have such a name
if ($key === false) {
throw new InvalidArgumentException("Invalid field name");
}
Exactly the same approach should be used for the direction,
$direction = $_GET['direction'] ?: "ASC";
$allowed = ["ASC","DESC"];
$key = array_search($direction, $allowed, true);
if ($key === false) {
throw new InvalidArgumentException("Invalid ORDER BY direction");
}
After such a code, both $direction
and $orderby
variables can be safely put in the SQL query, as they are either equal to one of the allowed variants or there will be an error thrown.
The last thing to mention about identifiers, they must be also formatted according to the particular database syntax. For MySQL it should be backtick
characters around the identifier. So the final query string for our order by example would be
$query = "SELECT * FROM `table` ORDER BY `$orderby` $direction";
Sorted() solution can give you some unexpected results with other strings.
List of other solutions:
>>> s = "Bubble Bobble"
>>> ''.join(sorted(set(s.lower())))
' belou'
>>> s = "Bubble Bobble"
>>> ''.join(sorted(set(s)))
' Bbelou'
>>> s = "Bubble Bobble"
>>> ''.join(sorted(s))
' BBbbbbeellou'
If you want to get rid of the space in the result, add strip() function in any of those mentioned cases:
>>> s = "Bubble Bobble"
>>> ''.join(sorted(set(s.lower()))).strip()
'belou'
Just make sure that your HTML file is encoded with UTF-8 and that your web server sends a HTTP header with that charset, then you just can write that character directly into your HTMl file.
http://www.w3.org/International/O-HTTP-charset
If you can't use UTF-8 for some reason, you can look up the codes in a unicode list such as http://en.wikipedia.org/wiki/List_of_Unicode_characters and use ꯍ
where ABCD is the hexcode from that list (U+ABCD).
Are you perhaps using java.sql.Date
? While that has millisecond granularity as a Java class (it is a subclass of java.util.Date
, bad design decision), it will be interpreted by the JDBC driver as a date without a time component. You have to use java.sql.Timestamp
instead.
I created one more list by sorting Jaspers list by device RAM (I made my own tests with Split's tool and fixed some results - check my comments in Jaspers thread).
device RAM: percent range to crash
Special cases:
Device RAM can be read easily:
[NSProcessInfo processInfo].physicalMemory
From my experience it is safe to use 45% for 1GB devices, 50% for 2/3GB devices and 55% for 4GB devices. Percent for macOS can be a bit bigger.
A common solution to this problem uses absolute positioning or cropped floats, but these are tricky in that they require extensive tuning if your columns change in number+size, and that you need to make sure your "main" column is always the longest. Instead, I'd suggest you use one of three more robust solutions:
display: flex
: by far the simplest & best solution and very flexible - but unsupported by IE9 and older.table
or display: table
: very simple, very compatible (pretty much every browser ever), quite flexible.display: inline-block; width:50%
with a negative margin hack: quite simple, but column-bottom borders are a little tricky.display:flex
This is really simple, and it's easy to adapt to more complex or more detailed layouts - but flexbox is only supported by IE10 or later (in addition to other modern browsers).
Example: http://output.jsbin.com/hetunujuma/1
Relevant html:
<div class="parent"><div>column 1</div><div>column 2</div></div>
Relevant css:
.parent { display: -ms-flex; display: -webkit-flex; display: flex; }
.parent>div { flex:1; }
Flexbox has support for a lot more options, but to simply have any number of columns the above suffices!
<table>
or display: table
A simple & extremely compatible way to do this is to use a table
- I'd recommend you try that first if you need old-IE support. You're dealing with columns; divs + floats simply aren't the best way to do that (not to mention the fact that multiple levels of nested divs just to hack around css limitations is hardly more "semantic" than just using a simple table). If you do not wish to use the table
element, consider css display: table
(unsupported by IE7 and older).
Example: http://jsfiddle.net/emn13/7FFp3/
Relevant html: (but consider using a plain <table>
instead)
<div class="parent"><div>column 1</div><div>column 2</div></div>
Relevant css:
.parent { display: table; }
.parent > div {display: table-cell; width:50%; }
/*omit width:50% for auto-scaled column widths*/
This approach is far more robust than using overflow:hidden
with floats. You can add pretty much any number of columns; you can have them auto-scale if you want; and you retain compatibility with ancient browsers. Unlike the float solution requires, you also don't need to know beforehand which column is longest; the height scales just fine.
KISS: don't use float hacks unless you specifically need to. If IE7 is an issue, I'd still pick a plain table with semantic columns over a hard-to-maintain, less flexible trick-CSS solution any day.
By the way, if you need your layout to be responsive (e.g. no columns on small mobile phones) you can use a @media
query to fall back to plain block layout for small screen widths - this works whether you use <table>
or any other display: table
element.
display:inline block
with a negative margin hack.Another alternative is to use display:inline block
.
Example: http://jsbin.com/ovuqes/2/edit
Relevant html: (the absence of spaces between the div
tags is significant!)
<div class="parent"><div><div>column 1</div></div><div><div>column 2</div></div></div>
Relevant css:
.parent {
position: relative; width: 100%; white-space: nowrap; overflow: hidden;
}
.parent>div {
display:inline-block; width:50%; white-space:normal; vertical-align:top;
}
.parent>div>div {
padding-bottom: 32768px; margin-bottom: -32768px;
}
This is slightly tricky, and the negative margin means that the "true" bottom of the columns is obscured. This in turn means you can't position anything relative to the bottom of those columns because that's cut off by overflow: hidden
. Note that in addition to inline-blocks, you can achieve a similar effect with floats.
TL;DR: use flexbox if you can ignore IE9 and older; otherwise try a (css) table. If neither of those options work for you, there are negative margin hacks, but these can cause weird display issues that are easy to miss during development, and there are layout limitations you need to be aware of.
If you don't want to place the watch inside a specific controller, you can add the watch for the whole aplication in Angular app run()
var myApp = angular.module('myApp', []);
myApp.run(function($rootScope) {
$rootScope.$on("$locationChangeStart", function(event, next, current) {
// handle route changes
});
});
I was having this same problem, and tried all the above solutions with no success. I finally solved the problem by deleting the entire query and creating a new one.
The new one had the exact same settings as the one that didn't work (literally the same query definition as I simply copied the old one).
I have no idea why this solved the problem, but it did.
Since .net45 you can use the LeaveOpen
constructor argument of StreamWriter
and still use the using
statement. Example:
using (var ms = new MemoryStream())
{
using (var sw = new StreamWriter(ms, Encoding.UTF8, 1024, true))
{
sw.WriteLine("data");
sw.WriteLine("data 2");
}
ms.Position = 0;
using (var sr = new StreamReader(ms))
{
Console.WriteLine(sr.ReadToEnd());
}
}
As already mentioned, a device may support both mouse and touch input. Very often, the question is not "what is supported" but "what is currently used".
For this case, you can simply register mouse events (including the hover listener) and touch events alike.
element.addEventListener('touchstart',onTouchStartCallback,false);
element.addEventListener('onmousedown',onMouseDownCallback,false);
...
JavaScript should automatically call the correct listener based on user input. So, in case of a touch event, onTouchStartCallback
will be fired, emulating your hover code.
Note that a touch may fire both kinds of listeners, touch and mouse. However, the touch listener goes first and can prevent subsequent mouse listeners from firing by calling event.preventDefault()
.
function onTouchStartCallback(ev) {
// Call preventDefault() to prevent any further handling
ev.preventDefault();
your code...
}
Further reading here.
Change it to this:
var email = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
This is a regular expression literal that is passed the i
flag which means to be case insensitive.
Keep in mind that email address validation is hard (there is a 4 or 5 page regular expression at the end of Mastering Regular Expressions demonstrating this) and your expression certainly will not capture all valid e-mail addresses.
It means if the screen size is 1024 then only apply below CSS rules.
The answer given by P????? creates a nullable bool, not a bool, which may be fine for you. For example in C# it would create: bool? AdminApproved
not bool AdminApproved
.
If you need to create a bool (defaulting to false):
ALTER TABLE person
ADD AdminApproved BIT
DEFAULT 0 NOT NULL;
The accepted answer works but doesn't move back to previous position if you scroll above it. It is always stuck to the top after being placed there.
$(window).scroll(function(e) {
$el = $('.fixedElement');
if ($(this).scrollTop() > 42 && $el.css('position') != 'fixed') {
$('.fixedElement').css( 'position': 'fixed', 'top': '0px');
} else if ($(this).scrollTop() < 42 && $el.css('position') != 'relative') {
$('.fixedElement').css( 'relative': 'fixed', 'top': '42px');
//this was just my previous position/formating
}
});
jleedev's response whould work, but I wasn't able to get it to work. His example page also didn't work (for me).
Use the CSS Class to prevent from Editing the Div Elements
CSS:
.divoverlay
{
position:absolute;
width:100%;
height:100%;
background-color:transparent;
z-index:1;
top:0;
}
JS:
$('#divName').append('<div class=divoverlay></div>');
Or add the class name in HTML Tag. It will prevent from editing the Div Elements.
Problem is, you're trying to upcast to a richer object. You simply need to add the items to a new list:
if (myObject is IEnumerable)
{
List<object> list = new List<object>();
var enumerator = ((IEnumerable) myObject).GetEnumerator();
while (enumerator.MoveNext())
{
list.Add(enumerator.Current);
}
}
from this wiki : https://en.wikipedia.org/wiki/List_of_Unicode_characters#Basic_Latin
for latin letters, I use
/^[A-zÀ-ÖØ-öø-ÿ]+$/
it avoids hyphens and specials chars
This is pure set theory which you can achieve with the minus
operation.
select id, name from table1
minus
select id, name from table2
Another variation you can try is(expanding @mnel's answer) if you have many temp'x'.
here "n" could be the number of temp variables present
rm(list = c(paste("temp",c(1:n),sep="")))
I personally didn't find any of these answers helpful. What worked in my case was giving the element float:none
and position:relative
. After that the element centered itself in the <td>
.
There is a library for this BarCode PHP. You just need to include a few files:
require_once('class/BCGFontFile.php');
require_once('class/BCGColor.php');
require_once('class/BCGDrawing.php');
You can generate many types of barcodes, namely 1D or 2D. Add the required library:
require_once('class/BCGcode39.barcode.php');
Generate the colours:
// The arguments are R, G, and B for color.
$colorFront = new BCGColor(0, 0, 0);
$colorBack = new BCGColor(255, 255, 255);
After you have added all the codes, you will get this way:
Example
Since several have asked for an example here is what I was able to do to get it done
require_once('class/BCGFontFile.php');
require_once('class/BCGColor.php');
require_once('class/BCGDrawing.php');
require_once('class/BCGcode128.barcode.php');
header('Content-Type: image/png');
$color_white = new BCGColor(255, 255, 255);
$code = new BCGcode128();
$code->parse('HELLO');
$drawing = new BCGDrawing('', $color_white);
$drawing->setBarcode($code);
$drawing->draw();
$drawing->finish(BCGDrawing::IMG_FORMAT_PNG);
If you want to actually create the image file so you can save it then change
$drawing = new BCGDrawing('', $color_white);
to
$drawing = new BCGDrawing('image.png', $color_white);
x*x
or x*x*x
will be faster than pow
, since pow
must deal with the general case, whereas x*x
is specific. Also, you can elide the function call and suchlike.
However, if you find yourself micro-optimizing like this, you need to get a profiler and do some serious profiling. The overwhelming probability is that you would never notice any difference between the two.
select type, craft, sum(NVL(regular, 0) + NVL(overtime, 0)) as total_hours
from hours_t
group by type, craft
order by type, craft
Always specify the minimum required version of cmake
cmake_minimum_required(VERSION 3.9)
You should declare a project. cmake
says it is mandatory and it will define convenient variables PROJECT_NAME
, PROJECT_VERSION
and PROJECT_DESCRIPTION
(this latter variable necessitate cmake 3.9):
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
Declare a new library target. Please avoid the use of file(GLOB ...)
. This feature does not provide attended mastery of the compilation process. If you are lazy, copy-paste output of ls -1 sources/*.cpp
:
add_library(mylib SHARED
sources/animation.cpp
sources/buffers.cpp
[...]
)
Set VERSION
property (optional but it is a good practice):
set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION})
You can also set SOVERSION
to a major number of VERSION
. So libmylib.so.1
will be a symlink to libmylib.so.1.0.0
.
set_target_properties(mylib PROPERTIES SOVERSION 1)
Declare public API of your library. This API will be installed for the third-party application. It is a good practice to isolate it in your project tree (like placing it include/
directory). Notice that, private headers should not be installed and I strongly suggest to place them with the source files.
set_target_properties(mylib PROPERTIES PUBLIC_HEADER include/mylib.h)
If you work with subdirectories, it is not very convenient to include relative paths like "../include/mylib.h"
. So, pass a top directory in included directories:
target_include_directories(mylib PRIVATE .)
or
target_include_directories(mylib PRIVATE include)
target_include_directories(mylib PRIVATE src)
Create an install rule for your library. I suggest to use variables CMAKE_INSTALL_*DIR
defined in GNUInstallDirs
:
include(GNUInstallDirs)
And declare files to install:
install(TARGETS mylib
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
You may also export a pkg-config
file. This file allows a third-party application to easily import your library:
pkg-config
PKG_CHECK_MODULES
pkg_check_modules
Create a template file named mylib.pc.in
(see pc(5) manpage for more information):
prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=@CMAKE_INSTALL_PREFIX@
libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
Name: @PROJECT_NAME@
Description: @PROJECT_DESCRIPTION@
Version: @PROJECT_VERSION@
Requires:
Libs: -L${libdir} -lmylib
Cflags: -I${includedir}
In your CMakeLists.txt
, add a rule to expand @
macros (@ONLY
ask to cmake to not expand variables of the form ${VAR}
):
configure_file(mylib.pc.in mylib.pc @ONLY)
And finally, install generated file:
install(FILES ${CMAKE_BINARY_DIR}/mylib.pc DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)
You may also use cmake EXPORT
feature. However, this feature is only compatible with cmake
and I find it difficult to use.
Finally the entire CMakeLists.txt
should looks like:
cmake_minimum_required(VERSION 3.9)
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
include(GNUInstallDirs)
add_library(mylib SHARED src/mylib.c)
set_target_properties(mylib PROPERTIES
VERSION ${PROJECT_VERSION}
SOVERSION 1
PUBLIC_HEADER api/mylib.h)
configure_file(mylib.pc.in mylib.pc @ONLY)
target_include_directories(mylib PRIVATE .)
install(TARGETS mylib
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(FILES ${CMAKE_BINARY_DIR}/mylib.pc
DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)
In ES6, the includes()
method is used to determine whether one string may be found within another string, returning true
or false
as appropriate.
var str = 'To be, or not to be, that is the question.';
console.log(str.includes('To be')); // true
console.log(str.includes('question')); // true
console.log(str.includes('nonexistent')); // false
Here is jsperf between
var ret = str.includes('one');
And
var ret = (str.indexOf('one') !== -1);
As the result shown in jsperf, it seems both of them perform well.
You should read it recursively, some time ago I had the same question and solve with this code:
public void proccessMenuNodeList(NodeList nl, JMenuBar menubar) {
for (int i = 0; i < nl.getLength(); i++) {
proccessMenuNode(nl.item(i), menubar);
}
}
public void proccessMenuNode(Node n, Container parent) {
if(!n.getNodeName().equals("menu"))
return;
Element element = (Element) n;
String type = element.getAttribute("type");
String name = element.getAttribute("name");
if (type.equals("menu")) {
NodeList nl = element.getChildNodes();
JMenu menu = new JMenu(name);
for (int i = 0; i < nl.getLength(); i++)
proccessMenuNode(nl.item(i), menu);
parent.add(menu);
} else if (type.equals("item")) {
JMenuItem item = new JMenuItem(name);
parent.add(item);
}
}
Probably you can adapt it for your case.
I have noticed that when intellisence doesn't work for an object there is usually an error somewhere in the class above line you are working on.
The other option is that you didn't instantiated the FileUpload object as an instance variable. make sure the code:
FileUpload fileUpload = new FileUpload();
is not inside a function in your code behind.
You have multiple columns named the same thing in your inner query, so the error is raised in the outer query. If you get rid of the outer query, it should run, although still be confusing:
SELECT DISTINCT
coaches.id,
people.*,
users.*,
coaches.*
FROM "COACHES"
INNER JOIN people ON people.id = coaches.person_id
INNER JOIN users ON coaches.person_id = users.person_id
LEFT OUTER JOIN organizations_users ON organizations_users.user_id = users.id
WHERE
rownum <= 25
It would be much better (for readability and performance both) to specify exactly what fields you need from each of the tables instead of selecting them all anyways. Then if you really need two fields called the same thing from different tables, use column aliases to differentiate between them.
Works in Google Chrome v66.x, Mozilla v59.x and Microsoft Edge... Solution with jQuery.
I test in Internet Explorer 9 and not supported.
$("#YourElement").blur(function(e){
var InputTarget = $(e.relatedTarget).attr("id"); // GET ID Element
console.log(InputTarget);
if(target == "YourId") { // If you want validate or make a action to specfic element
... // your code
}
});
Comment your test in others internet explorer versions.
You say it works once you install the VB6 IDE so the problem is likely to be that the components you are trying to use depend on the VB6 runtime being installed.
The VB6 runtime isn't installed on Windows by default.
Installing the IDE is one way to get the runtime. For non-developer machines, a "redistributable" installer package from Microsoft should be used instead.
Here is one VB6 runtime installer from Microsoft. I'm not sure if it will be the right version for your components:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=7b9ba261-7a9c-43e7-9117-f673077ffb3c
Or just put this in a Javascript file and have a good day :)
String.prototype.includes = function (str) {
var returnValue = false;
if (this.indexOf(str) !== -1) {
returnValue = true;
}
return returnValue;
}
IntelliJ IDEA Version 12.13 Ultimate Edition:
Macs: command + option + shift + N or on Menu -> Navigate > Symbol ...
It's much easier if you use Response.raw
and shutil.copyfileobj()
:
import requests
import shutil
def download_file(url):
local_filename = url.split('/')[-1]
with requests.get(url, stream=True) as r:
with open(local_filename, 'wb') as f:
shutil.copyfileobj(r.raw, f)
return local_filename
This streams the file to disk without using excessive memory, and the code is simple.
Those are probably timestamps in seconds and not in milliseconds which is required for the java new Date(long) constructor. Just multiply them by 1000 and you should be allright.
The proposed solutions are interesting and offer a good reference, however they are only partially satisfying. It is ok to manually add the separator when you have a single specific case or you know the format of the input string, but there can be cases where you want to do it programmatically on generic inputs.
With a bit of experimenting, I believe the criteria is that the path delimiter is not added if the first segment is a drive letter, meaning a single letter followed by a colon, no matter if it corresponds to a real unit.
For example:
import os
testval = ['c:','c:\\','d:','j:','jr:','data:']
for t in testval:
print ('test value: ',t,', join to "folder"',os.path.join(t,'folder'))
test value: c: , join to "folder" c:folder test value: c:\ , join to "folder" c:\folder test value: d: , join to "folder" d:folder test value: j: , join to "folder" j:folder test value: jr: , join to "folder" jr:\folder test value: data: , join to "folder" data:\folder
A convenient way to test for the criteria and apply a path correction can be to use os.path.splitdrive
comparing the first returned element to the test value, like t+os.path.sep if os.path.splitdrive(t)[0]==t else t
.
Test:
for t in testval:
corrected = t+os.path.sep if os.path.splitdrive(t)[0]==t else t
print ('original: %s\tcorrected: %s'%(t,corrected),' join corrected->',os.path.join(corrected,'folder'))
original: c: corrected: c:\ join corrected-> c:\folder original: c:\ corrected: c:\ join corrected-> c:\folder original: d: corrected: d:\ join corrected-> d:\folder original: j: corrected: j:\ join corrected-> j:\folder original: jr: corrected: jr: join corrected-> jr:\folder original: data: corrected: data: join corrected-> data:\folder
it can be probably be improved to be more robust for trailing spaces, and I have tested it only on windows, but I hope it gives an idea. See also Os.path : can you explain this behavior? for interesting details on systems other then windows.
The accepted answer (as of 2019 JULY 29) is only still valid if you have not started using the more recent SVG-with-JS approach of FontAwesome. In which case you need to follow the instructions on their CSS Pseudo-Elements HowTo. Basically there are three things to watch out for:
Unix timestamp is in seconds, so simply add the corresponding number of seconds to the timestamp:
$timeInFuture = time() + (60 * 60 * 24);
I have been able to ping from VMs and the host by setting the VM's network settings to "Bridged" mode. This, in short, places them all on the same physical network. This coupled with your static IP addresses should do the trick.
Since your task might contain asynchronous code you have to signal gulp when your task has finished executing (= "async completion").
In Gulp 3.x you could get away without doing this. If you didn't explicitly signal async completion gulp would just assume that your task is synchronous and that it is finished as soon as your task function returns. Gulp 4.x is stricter in this regard. You have to explicitly signal task completion.
You can do that in six ways:
This is not really an option if you're only trying to print something, but it's probably the most frequently used async completion mechanism since you're usually working with gulp streams. Here's a (rather contrived) example demonstrating it for your use case:
var print = require('gulp-print');
gulp.task('message', function() {
return gulp.src('package.json')
.pipe(print(function() { return 'HTTP Server Started'; }));
});
The important part here is the return
statement. If you don't return the stream, gulp can't determine when the stream has finished.
Promise
This is a much more fitting mechanism for your use case. Note that most of the time you won't have to create the Promise
object yourself, it will usually be provided by a package (e.g. the frequently used del
package returns a Promise
).
gulp.task('message', function() {
return new Promise(function(resolve, reject) {
console.log("HTTP Server Started");
resolve();
});
});
Using async/await syntax this can be simplified even further. All functions marked async
implicitly return a Promise so the following works too (if your node.js version supports it):
gulp.task('message', async function() {
console.log("HTTP Server Started");
});
This is probably the easiest way for your use case: gulp automatically passes a callback function to your task as its first argument. Just call that function when you're done:
gulp.task('message', function(done) {
console.log("HTTP Server Started");
done();
});
This is mostly useful if you have to invoke a command line tool directly because there's no node.js wrapper available. It works for your use case but obviously I wouldn't recommend it (especially since it's not very portable):
var spawn = require('child_process').spawn;
gulp.task('message', function() {
return spawn('echo', ['HTTP', 'Server', 'Started'], { stdio: 'inherit' });
});
Observable
.I've never used this mechanism, but if you're using RxJS it might be useful. It's kind of overkill if you just want to print something:
var of = require('rxjs').of;
gulp.task('message', function() {
var o = of('HTTP Server Started');
o.subscribe(function(msg) { console.log(msg); });
return o;
});
EventEmitter
Like the previous one I'm including this for completeness sake, but it's not really something you're going to use unless you're already using an EventEmitter
for some reason.
gulp.task('message3', function() {
var e = new EventEmitter();
e.on('msg', function(msg) { console.log(msg); });
setTimeout(() => { e.emit('msg', 'HTTP Server Started'); e.emit('finish'); });
return e;
});
this is another simple way to do it .
Name.objects.exclude(alias=None)
It doesn't work in IE5, but that's not a big issue.
However, cacheing headers are unreliable in meta elements; for one, any web proxies between the site and the user will completely ignore them. You should always use a real HTTP header for headers such as Cache-Control and Pragma.
Alternatively, you can use XPath query via XPathSelectElements
method:
var document = XDocument.Parse(yourXmlAsString);
var words = document.XPathSelectElements("//word[./category[text() = 'verb']]");
If you have access to JavaScript, you can create an element and read its computed style.
function defaultValueOfCssPropertyForElement(cssPropertyName, elementTagName, opt_pseudoElement) {
var pseudoElement = opt_pseudoElement || null;
var element = document.createElement(elementTagName);
document.body.appendChild(element);
var computedStyle = getComputedStyle(element, pseudoElement)[cssPropertyName];
element.remove();
return computedStyle;
}
// Usage:
defaultValueOfCssPropertyForElement('display', 'div'); // Output: 'block'
defaultValueOfCssPropertyForElement('content', 'div', ':after'); // Output: 'none'
I just did this in v5.9.1. Just go to the Macro Menu, click "Start Recording", perform your 3 replace all commands, then stop recording. You can then select "Save Current Recorded Macro", and play it back as often as you like, and it will perform the replaces as you expect.
As posted above by blackjar, the below lines worked for me
pip --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org install xxx
You need to give all three --trusted-host options
. I was trying with only the first one after looking at the answers but it didn't work for me like that.
Try this..
using System.Data.OleDb;
OleDbConnection dbConn;
dConn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=Registration.accdb;");
I believe this snippet will also be helpful in a situation where the dates comparison spans more than two entries.
static final int COMPARE_EARLIEST = 0;
static final int COMPARE_MOST_RECENT = 1;
public LocalDate getTargetDate(List<LocalDate> datesList, int comparatorType) {
LocalDate refDate = null;
switch(comparatorType)
{
case COMPARE_EARLIEST:
//returns the most earliest of the date entries
refDate = (LocalDate) datesList.stream().min(Comparator.comparing(item ->
item.toDateTimeAtCurrentTime())).get();
break;
case COMPARE_MOST_RECENT:
//returns the most recent of the date entries
refDate = (LocalDate) datesList.stream().max(Comparator.comparing(item ->
item.toDateTimeAtCurrentTime())).get();
break;
}
return refDate;
}
I modified my response to include the code for a test app I did.
Update: I have updated the jQuery to set the 'traditional' setting to true so this will work again (per @DustinDavis' answer).
First the javascript:
function test()
{
var stringArray = new Array();
stringArray[0] = "item1";
stringArray[1] = "item2";
stringArray[2] = "item3";
var postData = { values: stringArray };
$.ajax({
type: "POST",
url: "/Home/SaveList",
data: postData,
success: function(data){
alert(data.Result);
},
dataType: "json",
traditional: true
});
}
And here's the code in my controller class:
public JsonResult SaveList(List<String> values)
{
return Json(new { Result = String.Format("Fist item in list: '{0}'", values[0]) });
}
When I call that javascript function, I get an alert saying "First item in list: 'item1'". Hope this helps!
RTM
From the docs for the Python random
module:
Functions for integers:
random.randrange(stop)
random.randrange(start, stop[, step])
Return a randomly selected element from range(start, stop, step).
This is equivalent to choice(range(start, stop, step)), but doesn’t
actually build a range object.
That explains why it only gives you 0, doesn't it. range(0,1)
is [0]
. It is choosing from a list consisting of only that value.
Also from those docs:
random.random()
Return the next random floating point number in the range [0.0, 1.0).
But if your inclusion of the numpy
tag is intentional, you can generate many random floats in that range with one call using a np.random
function.
Add this line to your method, If you are using a API.
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
Create keystore file from command line :
Open Command line:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved
// (if you want to store keystore file at C:/ open command line with RUN AS ADMINISTRATOR)
C:\Windows\system32> keytool -genkey -v -keystore [your keystore file path]{C:/index.keystore} -alias [your_alias_name]{index} -keyalg RSA -keysize 2048 -validity 10000[in days]
Enter > It will prompt you for password > enter password (it will be invisible)
Enter keystore password:
Re-enter new password:
Enter > It will ask your detail.
What is your first and last name?
[Unknown]: {AB} // [Your Name / Name of Signer]
What is the name of your organizational unit?
[Unknown]: {Self} // [Your Unit Name]
What is the name of your organization?
[Unknown]: {Self} // [Your Organization Name]
What is the name of your City or Locality?
[Unknown]: {INDORE} // [Your City Name]
What is the name of your State or Province?
[Unknown]: {MP} //[Your State]
What is the two-letter country code for this unit?
[Unknown]: 91
Enter > Enter Y
Is CN=AB, OU=Self, O=Self, L=INDORE, ST=MP, C=91 correct?
[no]: Y
Enter > Enter password again.
Generating 2,048 bit RSA key pair and self-signed certificate (SHA256withRSA) with a validity of 10,000 days
for: CN=AB, OU=Self, O=Self, L=INDORE, ST=MP, C=91
Enter key password for <index> (RETURN if same as keystore password):
Re-enter new password:
[ Storing C:/index.keystore ]
Export your android package to .apk with your created keystore file
Right click on Package you want to export and select export
Select Export Android Application > Next
Next
Select Use Existing Keystore > Browse .keystore file > enter password > Next
Create keystore [.keystore/.jks]
in studio...
Click Build (ALT+B) > Generate Signed APK...
Click Create new..(ALT+C)
Browse Key store path (SHIFT+ENTER) > Select Path > Enter name > OK
Fill the detail about your .jks/keystore
file
Next
Your file
Enter Studio Master Password (You can RESET if you don't know) > OK
Select *Destination Folder * > Build Type
release : for publish on app store
debug : for debugging your application
Click Finish
Done !!!
$(document).ready(function () {
$('#tags').on('change', function () {
$('#tagsname').html('You selected: ' + this.value);
}).change();
$('#tags').on('blur', function (e, ui) {
$('#tagsname').html('You selected: ' + ui.item.value);
});
});
You can use lapply
to pass each column to str_length
, then cbind
it to your original data.frame
...
library(stringr)
out <- lapply( df , str_length )
df <- cbind( df , out )
# col1 col2 col1 col2
#1 abc adf qqwe 3 8
#2 abcd d 4 1
#3 a e 1 1
#4 abcdefg f 7 1
Late reading this, but.. The way I read your question, you only need to change two lines of code:
Accept user input, function writes back on screen.
<input type="text" id="userInput"=> give me input</input>
<button onclick="test()">Submit</button>
<!-- add this line for function to write into -->
<p id="demo"></p>
<script type="text/javascript">
function test(){
var userInput = document.getElementById("userInput").value;
document.getElementById("demo").innerHTML = userInput;
}
</script>
I think it's better to always use ApplicationContext, unless you're in a mobile environment like someone else said already. ApplicationContext has more functionality and you definitely want to use the PostProcessors such as RequiredAnnotationBeanPostProcessor, AutowiredAnnotationBeanPostProcessor and CommonAnnotationBeanPostProcessor, which will help you simplify your Spring configuration files, and you can use annotations such as @Required, @PostConstruct, @Resource, etc in your beans.
Even if you don't use all the stuff ApplicationContext offers, it's better to use it anyway, and then later if you decide to use some resource stuff such as messages or post processors, or the other schema to add transactional advices and such, you will already have an ApplicationContext and won't need to change any code.
If you're writing a standalone app, load the ApplicationContext in your main method, using a ClassPathXmlApplicationContext, and get the main bean and invoke its run() (or whatever method) to start your app. If you're writing a web app, use the ContextLoaderListener in web.xml so that it creates the ApplicationContext and you can later get it from the ServletContext, regardless of whether you're using JSP, JSF, JSTL, struts, Tapestry, etc.
Also, remember you can use multiple Spring configuration files and you can either create the ApplicationContext by listing all the files in the constructor (or listing them in the context-param for the ContextLoaderListener), or you can just load a main config file which has import statements. You can import a Spring configuration file into another Spring configuration file by using <import resource="otherfile.xml" /> which is very useful when you programmatically create the ApplicationContext in the main method and load only one Spring config file.
Assuming the json has the same properties as your typescript class, you don't have to copy your Json properties to your typescript object. You will just have to construct your Typescript object passing the json data in the constructor.
In your ajax callback, you receive a company:
onReceiveCompany( jsonCompany : any )
{
let newCompany = new Company( jsonCompany );
// call the methods on your newCompany object ...
}
In in order to to make that work:
1) Add a constructor in your Typescript class that takes the json data as parameter. In that constructor you extend your json object with jQuery, like this: $.extend( this, jsonData)
. $.extend allows keeping the javascript prototypes while adding the json object's properties.
2) Note you will have to do the same for linked objects. In the case of Employees in the example, you also create a constructor taking the portion of the json data for employees. You call $.map to translate json employees to typescript Employee objects.
export class Company
{
Employees : Employee[];
constructor( jsonData: any )
{
$.extend( this, jsonData);
if ( jsonData.Employees )
this.Employees = $.map( jsonData.Employees , (emp) => {
return new Employee ( emp ); });
}
}
export class Employee
{
name: string;
salary: number;
constructor( jsonData: any )
{
$.extend( this, jsonData);
}
}
This is the best solution I found when dealing with Typescript classes and json objects.
git config --global core.autocrlf false
works well for global settings.
But if you are using Visual Studio, might also need to modify .gitattributes
for some type of projects (e.g c# class library application):
* text=auto
You can get the values directly in case of one array like this:
var resultJSON = '{"FirstName":"John","LastName":"Doe","Email":"[email protected]","Phone":"123 dead drive"}';
var result = $.parseJSON(resultJSON);
result['FirstName']; // return 'John'
result['LastName']; // return ''Doe'
result['Email']; // return '[email protected]'
result['Phone']; // return '123'
Alternatively, you could invert the image using the bitwise_not
function of OpenCV:
imagem = cv2.bitwise_not(imagem)
I liked this example.
One problem with option 1 in answer from Victor Zamanian is that if the type isn't exported then users of your package can't declare it as the type for function parameters etc. One way around this would be to export an interface instead of the struct e.g.
package candidate
// Exporting interface instead of struct
type Candidate interface {}
// Struct is not exported
type candidate struct {
Name string
Votes uint32 // Defaults to 0
}
// We are forced to call the constructor to get an instance of candidate
func New(name string) Candidate {
return candidate{name, 0} // enforce the default value here
}
Which lets us declare function parameter types using the exported Candidate interface. The only disadvantage I can see from this solution is that all our methods need to be declared in the interface definition, but you could argue that that is good practice anyway.
I have found that the Worksheet ".UsedRange" method is superior in many instances to solve this problem. I struggled with a truncation issue that is a normal behaviour of the ".CurrentRegion" method. Using [ Worksheets("Sheet1").Range("A1").CurrentRegion ] does not yield the results I desired when the worksheet consists of one column with blanks in the rows (and the blanks are wanted). In this case, the ".CurrentRegion" will truncate at the first record. I implemented a work around but recently found an even better one; see code below that allows copying the whole set to another sheet or to identify the actual address (or just rows and columns):
Sub mytest_GetAllUsedCells_in_Worksheet()
Dim myRange
Set myRange = Worksheets("Sheet1").UsedRange
'Alternative code: set myRange = activesheet.UsedRange
'use msgbox or debug.print to show the address range and counts
MsgBox myRange.Address
MsgBox myRange.Columns.Count
MsgBox myRange.Rows.Count
'Copy the Range of data to another sheet
'Note: contains all the cells with that are non-empty
myRange.Copy (Worksheets("Sheet2").Range("A1"))
'Note: transfers all cells starting at "A1" location.
' You can transfer to another area of the 2nd sheet
' by using an alternate starting location like "C5".
End Sub
Yes, you can configure the Spring servlet context xml file to define your beans (i.e., classes), so that it can do the automatic injection for you. However, do note, that you have to do other configurations to have Spring up and running and the best way to do that, is to follow a tutorial ground up.
Once you have your Spring configured probably, you can do the following in your Spring servlet context xml file for Example 1 above to work (please replace the package name of com.movies to what the true package name is and if this is a 3rd party class, then be sure that the appropriate jar file is on the classpath) :
<beans:bean id="movieFinder" class="com.movies.MovieFinder" />
or if the MovieFinder class has a constructor with a primitive value, then you could something like this,
<beans:bean id="movieFinder" class="com.movies.MovieFinder" >
<beans:constructor-arg value="100" />
</beans:bean>
or if the MovieFinder class has a constructor expecting another class, then you could do something like this,
<beans:bean id="movieFinder" class="com.movies.MovieFinder" >
<beans:constructor-arg ref="otherBeanRef" />
</beans:bean>
...where 'otherBeanRef' is another bean that has a reference to the expected class.
I tested below code with SQL Server 2008 R2 Express and I believe we should have solution for all 6 steps you outlined. Let's take on them one-by-one:
We can enable TCP/IP protocol with WMI:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProtocols = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocol " _
& "where InstanceName = 'SQLEXPRESS' and ProtocolName = 'Tcp'")
if tcpProtocols.Count = 1 then
' set tcpProtocol = tcpProtocols(0)
' I wish this worked, but unfortunately
' there's no int-indexed Item property in this type
' Doing this instead
for each tcpProtocol in tcpProtocols
dim setEnableResult
setEnableResult = tcpProtocol.SetEnable()
if setEnableResult <> 0 then
Wscript.Echo "Failed!"
end if
next
end if
I believe your solution will work, just make sure you specify the right port. I suggest we pick a different port than 1433 and make it a static port SQL Server Express will be listening on. I will be using 3456 in this post, but please pick a different number in the real implementation (I feel that we will see a lot of applications using 3456 soon :-)
We can use WMI again. Since we are using static port 3456, we just need to update two properties in IPAll section: disable dynamic ports and set the listening port to 3456
:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProperties = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocolProperty " _
& "where InstanceName='SQLEXPRESS' and " _
& "ProtocolName='Tcp' and IPAddressName='IPAll'")
for each tcpProperty in tcpProperties
dim setValueResult, requestedValue
if tcpProperty.PropertyName = "TcpPort" then
requestedValue = "3456"
elseif tcpProperty.PropertyName ="TcpDynamicPorts" then
requestedValue = ""
end if
setValueResult = tcpProperty.SetStringValue(requestedValue)
if setValueResult = 0 then
Wscript.Echo "" & tcpProperty.PropertyName & " set."
else
Wscript.Echo "" & tcpProperty.PropertyName & " failed!"
end if
next
Note that I didn't have to enable any of the individual addresses to make it work, but if it is required in your case, you should be able to extend this script easily to do so.
Just a reminder that when working with WMI, WBEMTest.exe is your best friend!
I wish we could use WMI again, but unfortunately this setting is not exposed through WMI. There are two other options:
Use LoginMode
property of Microsoft.SqlServer.Management.Smo.Server
class, as described here.
Use LoginMode value in SQL Server registry, as described in this post. Note that by default the SQL Server Express instance is named SQLEXPRESS
, so for my SQL Server 2008 R2 Express instance the right registry key was
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQLServer
.
You got this one covered.
Since we are using a static port assigned to our SQL Server Express instance, there's no need to use instance name in the server address anymore.
SQLCMD -U sa -P newPassword -S 192.168.0.120,3456
Please let me know if this works for you (fingers crossed!).
where datalength(mytextfield)=0
chmod 400 mykey.pem
ssh -i mykey.pem [email protected]
Will connect you over ssh using a .pem file to any server.
This is easy to do using the jupyter-themes
package by Kyle Dunovan. You may be able to install it using conda
. Otherwise, you will need to use pip
.
Install it with conda:
conda install -c conda-forge jupyterthemes
or pip:
pip install jupyterthemes
You can get the list of available themes with:
jt -l
So change your theme with:
jt -t theme-name
To load a theme, finally, reload the page. The docs and source code are here.
GridView
is used for implementing material grid lists. If you know you have a fixed number of items and it's not very many (16 is fine), you can use GridView.count
. However, you should note that a GridView
is scrollable, and if that isn't what you want, you may be better off with just rows and columns.
import 'dart:collection';
import 'package:flutter/scheduler.dart';
import 'package:flutter/material.dart';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/foundation.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.orange,
),
home: new MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget{
@override
Widget build(BuildContext context){
return new Scaffold(
appBar: new AppBar(
title: new Text('Grid Demo'),
),
body: new GridView.count(
crossAxisCount: 4,
children: new List<Widget>.generate(16, (index) {
return new GridTile(
child: new Card(
color: Colors.blue.shade200,
child: new Center(
child: new Text('tile $index'),
)
),
);
}),
),
);
}
}
You can you use permalinks to include code snippets in issues, PRs, etc.
References:
https://help.github.com/en/articles/creating-a-permanent-link-to-a-code-snippet
From SQL Server 2016 CTP3
you can use new DIE statements instead of big IF
wrappers
Syntax:
DROP { PROC | PROCEDURE } [ IF EXISTS ] { [ schema_name. ] procedure } [ ,...n ]
Query:
DROP PROCEDURE IF EXISTS usp_name
More info here
Angular 6
You can pass in parameters needed for get call by using params:
this.httpClient.get<any>(url, { params: x });
where x = { property: "123" }.
As for the api function that logs "123":
router.get('/example', (req, res) => {
console.log(req.query.property);
})
This basically does the same as Mvins answer, but is a more compressed down and simplified version. It works by going back the distance of the radius of the lines adjacent to the corner and connecting both ends with a bezier curve whose control point is at the original corner point.
function createRoundedPath(coords, radius, close) {
let path = ""
const length = coords.length + (close ? 1 : -1)
for (let i = 0; i < length; i++) {
const a = coords[i % coords.length]
const b = coords[(i + 1) % coords.length]
const t = Math.min(radius / Math.hypot(b.x - a.x, b.y - a.y), 0.5)
if (i > 0) path += `Q${a.x},${a.y} ${a.x * (1 - t) + b.x * t},${a.y * (1 - t) + b.y * t}`
if (!close && i == 0) path += `M${a.x},${a.y}`
else if (i == 0) path += `M${a.x * (1 - t) + b.x * t},${a.y * (1 - t) + b.y * t}`
if (!close && i == length - 1) path += `L${b.x},${b.y}`
else if (i < length - 1) path += `L${a.x * t + b.x * (1 - t)},${a.y * t + b.y * (1 - t)}`
}
if (close) path += "Z"
return path
}
Depending on the format of your new row, you might use tibble::add_row
if your new row is simple and can specified in "value-pairs". Or you could use dplyr::bind_rows
, "an efficient implementation of the common pattern of do.call(rbind, dfs)".
Here is a simple way of running MySQL queries in the bash shell
mysql -u [database_username] -p [database_password] -D [database_name] -e "SELECT * FROM [table_name]"
I made a bash function that handle that. Here is the Github repo.
For record:
# Look for closest .gitconfig file in parent directories
# This file will be used as main .gitconfig file.
function __recursive_gitconfig_git {
gitconfig_file=$(__recursive_gitconfig_closest)
if [ "$gitconfig_file" != '' ]; then
home="$(dirname $gitconfig_file)/"
HOME=$home /usr/bin/git "$@"
else
/usr/bin/git "$@"
fi
}
# Look for closest .gitconfig file in parents directories
function __recursive_gitconfig_closest {
slashes=${PWD//[^\/]/}
directory="$PWD"
for (( n=${#slashes}; n>0; --n ))
do
test -e "$directory/.gitconfig" && echo "$directory/.gitconfig" && return
directory="$directory/.."
done
}
alias git='__recursive_gitconfig_git'
import operator
sorted_x = sorted(x, key=operator.attrgetter('score'))
if you want to sort x in-place, you can also:
x.sort(key=operator.attrgetter('score'))
At least on one system that is not very uncommon, they do not print the same:
~/src> uname -m
i686
~/src> gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
[some output snipped]
gcc version 4.1.2 (Gentoo 4.1.2)
~/src> gcc -o printfptr printfptr.c
~/src> ./printfptr
0xbf8ce99c
bf8ce99c
Notice how the pointer version adds a 0x
prefix, for instance. Always use %p since it knows about the size of pointers, and how to best represent them as text.
usually i don't use for loop in R, but here is my solution using for loops and two packages : plyr and dostats
plyr is on cran and you can download dostats on https://github.com/halpo/dostats (may be using install_github from Hadley devtools package)
Assuming that i have your first two data.frame (Df.1 and Df.2) in csv files, you can do something like this.
require(plyr)
require(dostats)
files <- list.files(pattern = ".csv")
for (i in seq_along(files)) {
assign(paste("Df", i, sep = "."), read.csv(files[i]))
assign(paste(paste("Df", i, sep = ""), "summary", sep = "."),
ldply(get(paste("Df", i, sep = ".")), dostats, sum, min, mean, median, max))
}
Here is the output
R> Df1.summary
.id sum min mean median max
1 A 34 4 5.6667 5.5 8
2 B 22 1 3.6667 3.0 9
R> Df2.summary
.id sum min mean median max
1 A 21 1 3.5000 3.5 6
2 B 16 1 2.6667 2.5 5
One way to do it would be like this:
param(
[Parameter(Position=0)][String]$Vlan,
[Parameter(ValueFromRemainingArguments=$true)][String[]]$Hosts
) ...
This would allow multiple hosts to be entered with spaces.
This is now possible with JPA 2.1:
@Column(name = "RIGHT")
@Enumerated(EnumType.STRING)
private Right right;
Further details:
Encode.php
<h1>Encode HTML CODE</h1>
<form action='htmlencodeoutput.php' method='post'>
<textarea rows='30' cols='100'name='inputval'></textarea>
<input type='submit'>
</form>
htmlencodeoutput.php
<?php
$code=bin2hex($_POST['inputval']);
$spilt=chunk_split($code,2,"%");
$totallen=strlen($spilt);
$sublen=$totallen-1;
$fianlop=substr($spilt,'0', $sublen);
$output="<script>
document.write(unescape('%$fianlop'));
</script>";
?>
<textarea rows='20' cols='100'><?php echo $output?> </textarea>
You can encode HTML like this .
This site seems to keep a complete list that's still maintained
iPhone, iPod Touch, and iPad from iOS 2.0 - 5.1.1 (to date).
You do need to assemble the full user-agent string out of the information listed in the page's columns.
To retrieve all cookies for the current document open in the browser, you again use the document.cookie
property.
You would use the focus
and blur
events of the window:
var interval_id;
$(window).focus(function() {
if (!interval_id)
interval_id = setInterval(hard_work, 1000);
});
$(window).blur(function() {
clearInterval(interval_id);
interval_id = 0;
});
To Answer the Commented Issue of "Double Fire" and stay within jQuery ease of use:
$(window).on("blur focus", function(e) {
var prevType = $(this).data("prevType");
if (prevType != e.type) { // reduce double fire issues
switch (e.type) {
case "blur":
// do work
break;
case "focus":
// do work
break;
}
}
$(this).data("prevType", e.type);
})
Click to view Example Code Showing it working (JSFiddle)
e.currentTarget would always return the component onto which the event listener is added.
On the other hand, e.target can be the component itself or any direct child or grand child or grand-grand-child and so on who received the event. In other words, e.target returns the component which is on top in the Display List hierarchy and must be in the child hierarchy or the component itself.
One use can be when you have several Image in Canvas and you want to drag Images inside the component but Canvas. You can add a listener on Canvas and in that listener you can write the following code to make sure that Canvas wouldn't get dragged.
function dragImageOnly(e:MouseEvent):void
{
if(e.target==e.currentTarget)
{
return;
}
else
{
Image(e.target).startDrag();
}
}
You need to initialize the list first:
protected List<string> list = new List<string>();
Just strengthening Jim's answer
Using presence one can do
class Task < ActiveRecord::Base
before_save :default_values
def default_values
self.status = status.presence || 'P'
end
end
Convert with JavaScript using .toLowerCase()
and capitalize
would do the rest.
Click on the New file menu, and chose file select language Objective. At that time it automatically generates a "Objective-C Bridging Header" file that is used to define some class name.
"Objective-C Bridging Header" under "Swift Compiler - Code Generation".
Here's the solution that worked for me:
var date1 = new Date("08/05/2015 23:41:20");
var date2 = new Date("08/06/2015 02:56:32");
var diff = date2.getTime() - date1.getTime();
var msec = diff;
var hh = Math.floor(msec / 1000 / 60 / 60);
msec -= hh * 1000 * 60 * 60;
var mm = Math.floor(msec / 1000 / 60);
msec -= mm * 1000 * 60;
var ss = Math.floor(msec / 1000);
msec -= ss * 1000;
alert(hh + ":" + mm + ":" + ss);
In order to capture deadlock graphs without using a trace (you don't need profiler necessarily), you can enable trace flag 1222. This will write deadlock information to the error log. However, the error log is textual, so you won't get nice deadlock graph pictures - you'll have to read the text of the deadlocks to figure it out.
I would set this as a startup trace flag (in which case you'll need to restart the service). However, you can run it only for the current running instance of the service (which won't require a restart, but which won't resume upon the next restart) using the following global trace flag command:
DBCC TRACEON(1222, -1);
A quick search yielded this tutorial:
http://www.mssqltips.com/sqlservertip/2130/finding-sql-server-deadlocks-using-trace-flag-1222/
Also note that if your system experiences a lot of deadlocks, this can really hammer your error log, and can become quite a lot of noise, drowning out other, important errors.
Have you considered third party monitoring tools? SQL Sentry Performance Advisor, for example, has a much nicer deadlock graph, showing you object / index names as well as the order in which the locks were taken. As a bonus, these are captured for you automatically on monitored servers without having to configure trace flags, run your own traces, etc.:
Disclaimer: I work for SQL Sentry.
This would be better approach as I have implemented :)
@model ObjectUser
@using System.Web.Script.Serialization
@{
var javaScriptSearilizer = new JavaScriptSerializer();
var searializedObject = javaScriptSearilizer.Serialize(Model);
}
<script>
var searializedObject = @Html.Raw(searializedObject )
console.log(searializedObject);
alert(searializedObject);
</script>
Hope this will help you to prevent you from iterating model ( happy coding )
OK, here is a final solution based on ckramer's initial solution and palehorse's example that works in all of the browsers, including Opera. If you set history.navigationMode to 'compatible' then jQuery's ready function will fire on Back button operations in Opera as well as the other major browsers.
This page has more information.
Example:
history.navigationMode = 'compatible';
$(document).ready(function(){
alert('test');
});
I tested this in Opera 9.5, IE7, FF3 and Safari and it works in all of them.
This error comes when there is error in your query syntax check field names table name, mean check your query syntax.
You could also use box-shadow
property with higher value of blur and rgba()
color to set opacity level.
Sounds like a better choice in your case.
box-shadow: 0 30px 40px rgba(0,0,0,.1);
This is very irritating error and i wasted my almost 9 hours to solve this.
Steps to solve:
Notice **ANDROID_HOME** while you run **ionic cordova build android** . command i. for example in my case it was pointing to some other android sdk which i uninstalled and then it started pointing to right sdk.
**In my case i uninstalled :**
brew cask uninstall android-sdk
brew cask uninstall android-platform-tool
then i ran **ionic cordova build android**
> cordova build android
ANDROID_HOME=/Users/anand/Library/Android/sdk
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_172.jdk/Contents/Home
Then it might say lineces not accepted then run below command :
cd /Users/Android/sdk/tools/bin/
then run ./sdkmanager --licenses
accepts all with y option
Then it might say unable to download jars then go to platform android and build.gradle
and search for buildscript and inside that reverse the order
repositories {
jcenter()
maven {
url "https://maven.google.com"
}
}
Thats it . Enjoy huh
Could you compare the output of this?
ls -A /some/dir | wc -l
Use Point data type to store Longitude and Latitude in a single column:
CREATE TABLE table_name (
id integer NOT NULL,
name text NOT NULL,
location point NOT NULL,
created_on timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
CONSTRAINT table_name_pkey PRIMARY KEY (id)
)
Create an Indexing on a 'location' column :
CREATE INDEX ON table_name USING GIST(location);
GiST index is capable of optimizing “nearest-neighbor” search :
SELECT * FROM table_name ORDER BY location <-> point '(-74.013, 40.711)' LIMIT 10;
Note: The point first element is longitude and the second element is latitude.
For more info check this Query Operators.
Opening a file creates it and (unless append ('a') is set) overwrites it with emptyness, such as this:
open(filename, 'w').close()
I would suggest querying the sys
views. something similar to
SELECT *
FROM
sys.dm_exec_sessions s
LEFT JOIN sys.dm_exec_connections c
ON s.session_id = c.session_id
LEFT JOIN sys.dm_db_task_space_usage tsu
ON tsu.session_id = s.session_id
LEFT JOIN sys.dm_os_tasks t
ON t.session_id = tsu.session_id
AND t.request_id = tsu.request_id
LEFT JOIN sys.dm_exec_requests r
ON r.session_id = tsu.session_id
AND r.request_id = tsu.request_id
OUTER APPLY sys.dm_exec_sql_text(r.sql_handle) TSQL
This way you can get a TotalPagesAllocated
which can help you figure out the spid
that is taking all the server resources. There has lots of times when I can't even bring up activity monitor and use these sys
views to see what's going on.
I would recommend you reading the following article. I got this reference from here.
A step by step guide I found here.
To create a read-only database user account for MySQL
At a UNIX prompt, run the MySQL command-line program, and log in as an administrator by typing the following command:
mysql -u root -p
Type the password for the root account. At the mysql prompt, do one of the following steps:
To give the user access to the database from any host, type the following command:
grant select on database_name.* to 'read-only_user_name'@'%' identified by 'password';
If the collector will be installed on the same host as the database, type the following command:
grant select on database_name.* to 'read-only_user_name' identified by 'password';
This command gives the user read-only access to the database from the local host only. If you know the host name or IP address of the host that the collector is will be installed on, type the following command:
grant select on database_name.* to 'read-only_user_name'@'host_name or IP_address' identified by 'password';
The host name must be resolvable by DNS or by the local hosts file. At the mysql prompt, type the following command:
flush privileges;
Type quit
.
The following is a list of example commands and confirmation messages:
mysql> grant select on dbname.* to 'readonlyuser'@'%' identified
by 'pogo$23';
Query OK, 0 rows affected (0.11 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
It's not like WAMP. You need to start mongoDB database with a command after directory has been created C:/database_mongo
mongod --dbpath=C:/database_mongo/
you can then connect to mongodb using commands.
If you use the java keyword abstract
you cannot provide an implementation.
Sometimes this idea comes from having a background in C++ and mistaking the virtual
keyword in C++ as being "almost the same" as the abstract
keyword in Java.
In C++ virtual
indicates that a method can be overridden and polymorphism will follow, but abstract
in Java is not the same thing. In Java abstract
is more like a pure virtual
method, or one where the implementation must be provided by a subclass. Since Java supports polymorphism without the need to declare it, all methods are virtual
from a C++ point of view. So if you want to provide a method that might be overridden, just write it as a "normal" method.
Now to protect a method from being overridden, Java uses the keyword final
in coordination with the method declaration to indicate that subclasses cannot override the method.
I came across this question when I was trying to find multiple filenames that I could not combine into a regular expression as described in @Chris J's answer, here is what worked for me
find . -name one.pdf -o -name two.txt -o -name anotherone.jpg
-o
or -or
is logical OR. See Finding Files on Gnu.org for more information.
I was running this on CygWin.
All you have to do is post() a Runnable that does the addView().
Java infers automatically the type of the elements in case
, so the labels must be unqualified.
int i;
switch(i) {
case 5: // <- integer is expected
}
MyEnum e;
switch (e) {
case VALUE_A: // <- an element of the enumeration is expected
}
One quick way to do this is to create a column with a formula that evaluates to true for the rows you care about and then filter for the value TRUE in that column.
in your component assign a variable like,
export class AppComponent {
netImage:any = "../assets/network.jpg";
title = 'app';
}
use this netImage in your src to get the image, as given below,
<figure class="figure">
<img [src]="netImage" class="figure-img img-fluid rounded" alt="A generic square placeholder image with rounded corners in a figure.">
<figcaption class="figure-caption">A caption for the above image.</figcaption>
</figure>
An easier solution has been outlined here: Validate select box
Make the value be empty and add the required attribute
<select id="select" class="required">
<option value="">Choose an option</option>
<option value="option1">Option1</option>
<option value="option2">Option2</option>
<option value="option3">Option3</option>
</select>
You can use a redirect to that action :
redirect_to your_controller_action_url
More on : Rails Guide
To just render the new action :
redirect_to your_controller_action_url and return
Have a look at building a simple directory browser using php RecursiveDirectoryIterator
Also, as you mentioned you want to list you can also look at some ready made libraries that create file/folder explorers e.g.:
For log4j 2 API , you can use
Logger logger = LogManager.getRootLogger();
Configurator.setAllLevels(logger.getName(), Level.getLevel(level));
You can use this jquery plugin:
http://digitalbush.com/projects/masked-input-plugin/
Refer to demo tab, phone option.
You must have copy/paste text from Word Document. Word document use Smart Quotes. You can replace it with Special Character (’) or simply type in your HTML editor (').
I'm sure this will solve your problem.
You can try this:
.classname{_x000D_
width:250px;_x000D_
overflow:hidden;_x000D_
text-overflow:ellipsis;_x000D_
}
_x000D_
For all those who are facing this issue in windows 10 even after trying the above mentiond steps, this worked for me -
For Windows 10 users trying to debug this same error, launch CMD as administrator (important!) and run dot -c
and then run dot -v
This fixed the issue for me
Save yourself some pain...
using System.Linq;
int[] ints = new [] { 10, 20, 10, 34, 113 };
List<int> lst = ints.OfType<int>().ToList(); // this isn't going to be fast.
Can also just...
List<int> lst = new List<int> { 10, 20, 10, 34, 113 };
or...
List<int> lst = new List<int>();
lst.Add(10);
lst.Add(20);
lst.Add(10);
lst.Add(34);
lst.Add(113);
or...
List<int> lst = new List<int>(new int[] { 10, 20, 10, 34, 113 });
or...
var lst = new List<int>();
lst.AddRange(new int[] { 10, 20, 10, 34, 113 });
I just want to have a button on my website make a PHP file run
<form action="my.php" method="post">
<input type="submit">
</form>
Generally speaking, however, unless you are sending new data to the server to be stored, you would just use a link.
<a href="my.php">run php</a>
(Although you should use link text that describes what happens from the user's point of view, not the servers)
I'm making a simple blog site for myself and I've got the code for the site and the javascript that can take the post I write in a textarea and display it immediately. I just want to link it to a PHP file that will create the permanent blog post on the server so that when I reload the page, the post is still there.
This is tricker.
First, you do need to use a form and POST (since you are sending data to be stored).
Then you need to store the data somewhere. This is normally done using a database. Read up on the PDO library for PHP. It is the standard way to interact with databases.
Then you need to pull the data back out again. The simplest approach here is to use the query string to pass the primary key for the database row with the entry you wish to display.
<a href="showBlogEntry.php?entry_id=123">...</a>
Make sure you also read up on SQL injection and XSS.
Changing host_key_checking
to false
for all hosts is a very bad idea.
The only time you want to ignore it, is on "first contact", which these two tasks will accomplish:
- name: Check SSH known_hosts for {{ inventory_hostname }}
local_action: shell ssh-keygen -F {{ inventory_hostname }}
register: checkForKnownHostsEntry
failed_when: false
changed_when: false
ignore_errors: yes
- name: Add {{ inventory_hostname }} to SSH known hosts automatically
when: checkForKnownHostsEntry.rc == 1
changed_when: checkForKnownHostsEntry.rc == 1
set_fact:
ansible_ssh_common_args: '-o StrictHostKeyChecking=no'
So we only turn off host key checking if we don't have the host key in our known_hosts
file.
Here's a nice way to achieve anti-aliasing:
text-shadow: 0 0 1px rgba(0,0,0,0.3);
I'm facing the same problem trying to geocode 140 addresses.
My workaround was adding usleep(100000) for each loop of next geocoding request. If status of the request is OVER_QUERY_LIMIT, the usleep is increased by 50000 and request is repeated, and so on.
And of cause all received data (lat/long) are stored in XML file not to run request every time the page is loading.
Had the same problem. found some videos on Youtube. So here is an even simpler suggestion. This is all the code you need:
#include <QDebug>
int main(int argc, char *argv[])
{
qDebug() <<"Hello World"<< endl;
return 0;
}
The above code comes from Qt5 Tutorial: Building a simple Console application by
Dominique Thiebaut
In case you are not matching numeric strings, always good to have common case:
.Where(oh => oh.Hierarchy.ToUpper().Contains(mySearchString.ToUpper()))
Please run the below comments to update to Angular 6 from Angular 5
public class Person{
String s;
Date d;
...
public Person clone(){
Person p = new Person();
p.s = this.s.clone();
p.d = this.d.clone();
...
return p;
}
}
In your executing code:
ArrayList<Person> clone = new ArrayList<Person>();
for(Person p : originalList)
clone.add(p.clone());
The +
operator returns the numeric representation of the object. So in your particular case, it would appear to be predicating the if on whether or not d
is a non-zero number.
Above solutions are good but for me, I find this code simple and workable. Just create a temporary file. If the file is created, its mean user has the write access.
public static bool HasWritePermission(string tempfilepath)
{
try
{
System.IO.File.Create(tempfilepath + "temp.txt").Close();
System.IO.File.Delete(tempfilepath + "temp.txt");
}
catch (System.UnauthorizedAccessException ex)
{
return false;
}
return true;
}