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Verifying signed git commits?
...ate a signature made by an expired key, a signature made by a revoked key, etc.
New output letters have been assigned to express them.
According to gpg2's doc/DETAILS:
For each signature only one of the codes GOODSIG, BADSIG, EXPSIG, EXPKEYSIG, REVKEYSIG or ERRSIG will be emitted.
...
Alternatives to gprof [closed]
...Beside time metric, you can also query specific counters, i.e. cache hits, etc.
Unlike gprof, you can profile any process/binary running on your system using either of the two.
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Getting the closest string match
...finding words from one phrase in the other phrase, length of both phrases, etc) along with the implementation of the Levenshtein distance algorithm. Because deciding which is the "best" match is a heuristic (fuzzy) determination - you'll have to come up with a set of weights for any metrics you come...
What does .SD stand for in data.table in R
... particularly helpful for chaining together "queries" (extractions/subsets/etc using [). In particular, this also means that .SD is itself a data.table (with the caveat that it does not allow assignment with :=).
The simpler usage of .SD is for column subsetting (i.e., when .SDcols is specified); I...
Understanding __get__ and __set__ and Python descriptors
...erty type is implemented. A descriptor simply implements __get__, __set__, etc. and is then added to another class in its definition (as you did above with the Temperature class). For example:
temp=Temperature()
temp.celsius #calls celsius.__get__
Accessing the property you assigned the descripto...
Can someone explain the right way to use SBT?
...ject templates and seeds : https://typesafe.com/activator
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1) minimal-java
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4...
Repeat String - Javascript
...ell as adding the second byte). The third byte requires a cost of 3 units, etc.
C(N) = 1 + 2 + 3 + ... + N = N(N+1)/2 = O(N^2). The symbol O(N^2) is pronounced Big O of N squared, and it means that the computational cost in the long run is proportional to the square of the string length. To create ...
What is the difference between trie and radix trie data structures?
...hose characteristics (such as depth, memory need, search miss/hit runtime, etc.) depend on radix of the underlying alphabets, we may call them radix “trie’s”. For example, an un-compacted as well as a compacted trie when uses alphabets a-z, we can call it a radix 26 trie. Any trie that uses on...
Why does Java switch on contiguous ints appear to run faster with added cases?
...e 86)
; {section_word}
[etc.]
0x0000000002524744: add rsp,0x10
0x0000000002524748: pop rbp
0x0000000002524749: test DWORD PTR [rip+0xfffffffffde1b8b1],eax # 0x0000000000340000
; ...
mmap() vs. reading blocks
... against memory, such as compiler auto-vectorization, SIMD intrinsics, prefetching, optimized in-memory parsing routines, OpenMP, etc.
In the case that the file is already in the cache, it seems impossible to beat: you just directly access the kernel page cache as memory and it can't get faster th...