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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...l have to write a little more code, because it needs a bit more options to call it.
Analogy
It's like you would be able to buy yourself a car engine that you'd have to create a whole car around it with steering, brakes etc... Car manufacturers produce completed cars, with a friendly interface (ped...
What does enumerable mean?
...e? Certain objects have some non-enumerable properties, for example if you call Object.getOwnPropertyNames([]) (which returns an array of all properties, enumerable or not, on []), it will return ['length'], which includes the non-enumerable property of an array, 'length'.
You can make your own non...
Delete keychain items when an app is uninstalled
...you should put code to delete values from the keychain. Synchronize can be called to make sure the "FirstRun" key/value is immediately persisted in case the user kills the app manually before the system persists it.
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Value Change Listener to JTextField
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Add a listener to the underlying Document, which is automatically created for you.
// Listen for changes in the text
textField.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
warn();
}
public void removeUpdate(Document...
The project type is not supported by this installation
...uch less probable as this is one of the highest editions. I agree that providing link to the project might be the greatest help. Also you could open .sln file with a notepad and check first line: what is Format Version there? I mean the project might be created with VS 2010.
– ...
How to align center the text in html table row?
...ith CSS and inline style attributes:
td
{
height: 50px;
width: 50px;
}
#cssTable td
{
text-align: center;
vertical-align: middle;
}
<table border="1">
<tr>
<td style="text-align: center; vertical-align: middle;">Text</td>
...
Random date in C#
...start.AddDays(gen.Next(range));
}
For better performance if this will be called repeatedly, create the start and gen (and maybe even range) variables outside of the function.
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Avoiding if statement inside a for loop?
I have a class called Writer that has a function writeVector like so:
4 Answers
4
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Check synchronously if file/directory exists in Node.js
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Note that fs.exists() is deprecated, but fs.existsSync() is not. (The
callback parameter to fs.exists() accepts parameters that are
inconsistent with other Node.js callbacks. fs.existsSync() does not
use a callback.)
You've specifically asked for a synchronous check, but if you can use an...
Docker EXPOSE a port only to Host
Is docker capable of exposing a port only to the host and not to the outside.
1 Answer
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