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Difference between JSON.stringify and JSON.parse
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JSON.stringify turns a JavaScript object into JSON text and stores that JSON text in a string, eg:
var my_object = { key_1: "some text", key_2: true, key_3: 5 };
var object_as_string = JSON.stringify(my_object);
// "{"key_1":"some text","key_2":true,"key_3":5}"
typeof(objec...
Tools for analyzing performance of a Haskell program
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how to find out why this solution is so slow. Are there any commands that tell me where most of the computation-time is spend so I know which part of my haskell-program is slow?
Precisely! GHC provides many excellent tools, including:
runtime statistics
time profiling
heap profiling
t...
What's the difference setting Embed Interop Types true and false in Visual Studio?
...ou actually use in code.
Read more in Scott Hanselman's blog post about it and other VS improvements here.
As for whether it is advised or not, I'm not sure as I don't need to use this feature. A quick web search yields a few leads:
Check your Embed Interop Types flag when doing Visual Studio exten...
PHP “pretty print” json_encode [duplicate]
...ncode an array into JSON output. Then I print the returned value to a file and save it. Problem is that the client wants to be able to open these JSON files for readability, so I'd like to add line breaks in and "pretty print" the JSON output. Any ideas on how to do this? My only other alternative t...
How to make the division of 2 ints produce a float instead of another int?
...another Bruce Eckels exercise in calculating velocity, v = s / t where s and t are integers. How do I make it so the division cranks out a float?
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Need to understand the usage of SemaphoreSlim
Here is the code I have but I don't understand what SemaphoreSlim is doing.
3 Answers
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Setting the default value of a DateTime Property to DateTime.Now inside the System.ComponentModel De
...de to the constructor to initialize the date if required, create a trigger and handle missing values in the database, or implement the getter in a way that it returns DateTime.Now if the backing field is not initialized.
public DateTime DateCreated
{
get
{
return this.dateCreated.HasVal...
CSS center display inline block?
... I need a child element with display: inline-block to be both horizontally and vertically centered within a 100% width parent.
I used Flexbox's justify-content and align-items properties, which respectively allow you to center elements horizontally and vertically. By setting both to center on the ...
Current time formatting with Javascript
...oneOffset() - Returns the number of minutes between the machine local time and UTC.
There are no built-in methods allowing you to get localized strings like "Friday", "February", or "PM". You have to code that yourself. To get the string you want, you at least need to store string representations...
Callback after all asynchronous forEach callbacks are completed
...=== array.length) {
callback();
}
});
});
(thanks to @vanuan and others) This approach guarantees that all items are processed before invoking the "done" callback. You need to use a counter that gets updated in the callback. Depending on the value of the index parameter does not provid...