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How to do what head, tail, more, less, sed do in Powershell? [closed]
...
Get-Content (alias: gc) is your usual option for reading a text file. You can then filter further:
gc log.txt | select -first 10 # head
gc -TotalCount 10 log.txt # also head
gc log.txt | select -last 10 # tail
gc -Tail 10 log.txt # also tail (since PSv3), al...
Execute a terminal command from a Cocoa app
...ier];
NSPipe *pipe = [NSPipe pipe];
NSFileHandle *file = pipe.fileHandleForReading;
NSTask *task = [[NSTask alloc] init];
task.launchPath = @"/usr/bin/grep";
task.arguments = @[@"foo", @"bar.txt"];
task.standardOutput = pipe;
[task launch];
NSData *data = [file readDataToEndOfFile];
[file closeFi...
'this' vs $scope in AngularJS controllers
... the desire to support "reusable components, which should not accidentally read or modify data in the parent scope." But if a directive really does want/need to read or modify SOME SPECIFIC data in the parent scope (like the 'pane' directive does), it requires some effort: 'require' the controller w...
Accessing MP3 metadata with Python [closed]
... from the source folder.
Relevant examples from the website are below.
Reading the contents of an mp3 file containing either v1 or v2 tag info:
import eyeD3
tag = eyeD3.Tag()
tag.link("/some/file.mp3")
print tag.getArtist()
print tag.getAlbum()
print tag.getTitle()
Read an mp3 file (tra...
Is there any NoSQL data store that is ACID compliant?
...ase can support ACID, so can a NoSQL database.
Some resources for further reading:
Wikipedia article on ACID
Wikipedia on propagation constraints
Wikipedia (yeah, I like the site, ok?) on database normalization
Apache documentation on CouchDB with a good overview of how it applies ACID
Wikipedia ...
Constructors vs Factory Methods [closed]
... This answer doesn't answer the question just relays information to read to understand/explain the concept... This is more of a comment.
– Crt
Mar 9 '18 at 15:44
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How to use OpenSSL to encrypt/decrypt files?
... Do not use the above command since there is no key derivation. Read more here: openssl weak key derivation
– jonasl
Apr 29 '16 at 13:25
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How can I remove an element from a list?
...he back of the list to the front.
A response to that post later in the thread states:
For deleting an element of a list, see R FAQ 7.1
And the relevant section of the R FAQ says:
... Do not set x[i] or x[[i]] to NULL, because this will remove the corresponding component from the list.
...
How does `is_base_of` work?
... This is going to be my favorite answer ever... a question: have you read the whole C++ standard or are you just working in the C++ committee?? Congratulations!
– Marco A.
Feb 2 '14 at 17:58
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make_unique and perfect forwarding
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@DavidRodríguez-dribeas: read Herb's blog to understand the exception safety issue. forget about "not designed to be derived", that's just rubbish. instead of my suggestion of making make_unique a class, i now think it's better to make it a function...