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How to use double or single brackets, parentheses, curly braces
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In Bash, test and [ are shell builtins.
The double bracket, which is a shell keyword, enables additional functionality. For example, you can use && and || instead of -a and -o and there's a regular expression matching operator =~....
How to modify a text file?
I'm using Python, and would like to insert a string into a text file without deleting or copying the file. How can I do that?
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Where are static variables stored in C and C++?
... Neufeld: your answer does not answer the question at all. I do not understand why it is accepted. Because the both the 'foo' and 'bar' are non-0 initialized. The question is where to place two static/global variable with the same name in .bss or .data
– lukmac
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Reference: Comparing PHP's print and echo
What is the difference between PHP's print and echo ?
1 Answer
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Which cryptographic hash function should I choose?
...Indeed, MD5 is often still used in applications where the smaller key size and speed are beneficial. That said, due to its flaws, researchers recommend the use of other hash functions in new scenarios.
SHA1 has a flaw that allows collisions to be found in theoretically far less than the 2^80 steps ...
Is floating point math broken?
...is like this. In most programming languages, it is based on the IEEE 754 standard. The crux of the problem is that numbers are represented in this format as a whole number times a power of two; rational numbers (such as 0.1, which is 1/10) whose denominator is not a power of two cannot be exactly re...
What are the differences between NP, NP-Complete and NP-Hard?
What are the differences between NP , NP-Complete and NP-Hard ?
11 Answers
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Tablet or Phone - Android
...user is using a tablet or a phone?
I've got problems with my tilt function and my new tablet (Transformer)
30 Answers
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OO Design in Rails: Where to put stuff
I'm really enjoying Rails (even though I'm generally RESTless), and I enjoy Ruby being very OO. Still, the tendency to make huge ActiveRecord subclasses and huge controllers is quite natural (even if you do use a controller per resource). If you were to create deeper object worlds, where would you p...
What are the undocumented features and limitations of the Windows FINDSTR command?
The Windows FINDSTR command is horribly documented. There is very basic command line help available through FINDSTR /? , or HELP FINDSTR , but it is woefully inadequate. There is a wee bit more documentation online at https://docs.microsoft.com/en-us/windows-server/administration/windows-commands...