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How to sleep for five seconds in a batch file/cmd [duplicate]
..., but sometimes I want to capture the screen after five seconds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.)
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How do I parse JSON with Objective-C?
...on, Apple's supplied JSON parser. Use third-party options only as a fallback if you find that class unavailable at runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from a web request...
// probably check here that returnedData isn't nil; attempting
// NSJSONSerialization wi...
How to redirect the output of a PowerShell to a file during its execution
I have a PowerShell script for which I would like to redirect the output to a file. The problem is that I cannot change the way this script is called. So I cannot do:
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What's the fastest way to do a bulk insert into Postgres?
...ulate a database initially, and they suggest using the COPY command for bulk loading rows. The guide has some other good tips on how to speed up the process, like removing indexes and foreign keys before loading the data (and adding them back afterwards).
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update package.json version automatically
Before I do a small release and tag it, I'd like to update the package.json to reflect the new version of the program.
11 A...
Stashing only un-staged changes in Git
I'd like to do the following work flow:
11 Answers
11
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How to replace all occurrences of a string?
..., but that doesn't seem to be the case anymore in modern browsers.
Benchmark: https://jsperf.com/replace-all-vs-split-join
Conclusion: If you have a performance critical use case (e.g processing hundreds of strings), use the Regexp method. But for most typical use cases, this is well worth not havin...
What is the reason not to use select *?
...ich you can then optimize to be efficient.
When you use select * you're make it impossible to profile, therefore you're not writing clear & straightforward code and you are going against the spirit of the quote. select * is an anti-pattern.
So selecting columns is not a premature optimizatio...
Converting Secret Key into a String and Vice Versa
I am generating a key and need to store it in DB, so I convert it into a String, but to get back the key from the String. What are the possible ways of accomplishing this?
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Get file version in PowerShell
... edited Jan 24 at 9:14
Ian Kemp
21.9k1414 gold badges9393 silver badges116116 bronze badges
answered Aug 27 '08 at 17:45
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