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pretty-print JSON using JavaScript
...utation which could cause performance issues if operation is repeated many times. Only thing was missing for me this to work was <pre> tags.
– C.L.
Aug 26 '19 at 13:47
...
Typescript: difference between String and string
...y String" is identical to var s = "My String" ... also, no matter how many times I read this respond, I'm still not grasping the purpose of the string type in TypeScript, since, at the end of the day, ('My String')['constructor'] === String...
– mindplay.dk
Nov...
What is the difference between user and kernel modes in operating systems?
...l mode is not done automatically by CPU. CPU is interrupted by interrupts (timers, keyboard, I/O). When interrupt occurs, CPU stops executing the current running program, switch to kernel mode, executes interrupt handler. This handler saves the state of CPU, performs its operations, restore the stat...
Browser detection in JavaScript? [duplicate]
...
+1 from me as well. Sometimes, it's not about feature support, it's actually about the browser. Yes, the user-agent info can be spoofed, but when you're dealing with older browsers and circumventing their bugs (like FF 3's issue with not sending the...
Is there a way to detect if an image is blurry?
...rue since the frequency spectrum is going to be that of the original image times that of the blurring filter. Thus, if the original image already had predominately low frequencies, how can you tell whether it was blurred?
– Chris A.
Oct 14 '11 at 14:16
...
Create an array or List of all dates between two dates [duplicate]
...s(offset))
.ToArray();
For loop:
var dates = new List<DateTime>();
for (var dt = start; dt <= end; dt = dt.AddDays(1))
{
dates.Add(dt);
}
EDIT:
As for padding values with defaults in a time-series, you could enumerate all the dates in the full date-range, and pick the va...
Can I query MongoDB ObjectId by date?
...
Popping Timestamps into ObjectIds covers queries based on dates embedded in the ObjectId in great detail.
Briefly in JavaScript code:
/* This function returns an ObjectId embedded with a given datetime */
/* Accepts both Date object ...
Changing Java Date one hour back
...ndar.getInstance();
// remove next line if you're always using the current time.
cal.setTime(currentDate);
cal.add(Calendar.HOUR, -1);
Date oneHourBack = cal.getTime();
java.util.Date
new Date(System.currentTimeMillis() - 3600 * 1000);
org.joda.time.LocalDateTime
new LocalDateTime().minusHours...
Group by multiple columns in dplyr, using string vector input
...ote that since dplyr::summarize only strips off one layer of grouping at a time, you've still got some grouping going on in the resultant tibble (which can sometime catch people by suprise later down the line). If you want to be absolutely safe from unexpected grouping behavior, you can always add %...
Replacing spaces with underscores in JavaScript?
...on. The expression for whitespace is \s and the expression for "1 or more times" is + the plus sign, so you'd just replace Adam's answer with the following:
key=key.replace(/\s+/g,"_");
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