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Grep regex NOT containing string
...p to check against a syslog file. They are usually matching an IP address and log entry;
3 Answers
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Get operating system info
...ing system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
7 Answers
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Master-master vs master-slave database architecture?
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We're trading off availability, consistency and complexity. To address the last question first: Does this matter? Yes very much! The choices concerning how your data is to be managed is absolutely fundamental, and there's no "Best Practice" dodging the decisions. You n...
Why historically do people use 255 not 256 for database field magnitudes?
...ric reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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Python: json.loads returns items prefixing with 'u'
I'll be receiving a JSON encoded string form Obj-C, and I am decoding a dummy string (for now) like the code below. My output comes out with character 'u' prefixing each item:
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(SC) DeleteService FAILED 1072
Last time I create WAS profile and WASService then I try to config and run many script for learn how to config WAS, Finally it crash so i use wasprofile delete this profile and forgot delete WASService.
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When to use PNG or JPG in iPhone development?
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PNG's are pixel perfect (non-lossy), and require very little extra CPU energy to display. However, large PNGs may take longer to read from storage than more compressed image formats, and thus be slower to display.
JPG's are smaller to store, but lossy (amount ...
TCP loopback connection vs Unix Domain Socket performance
Working on an Android and iOS based application which require communication with a server running in the same device. Currently using TCP loopback connection for communicating with App and Server (App written in user layer, server written in C++ using Android NDK)
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Why are trailing commas allowed in a list?
I am curious why in Python a trailing comma in a list is valid syntax, and it seems that Python simply ignores it:
5 Answer...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
... line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Maybe leaving those connections open isn't a problem in reality, but it feels like it is.
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