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What is the best way to force yourself to master vi? [closed]
A good while ago, I read an article by the creator of viemu , clearing up a lot of the misconceptions about vi, as well as explaining why it's a good idea (and why it's been very popular for the last 30 years+). The same guy also has a great set of graphical cheat sheets that teach the basics a f...
How are ssl certificates verified?
...rchased one has been signed by a Certificate Authority that your browser already knows about. In other words, your browser can easily validate the authenticity of a purchased certificate.
Unfortunately this has led to a common misconception that self-signed certificates are inherently less secure t...
How to extract text from a PDF? [closed]
...e "grep" with impunity on my pdf files. Since I can grep better than I can read, it's a win! (:-) Upvote.
– David Elson
Aug 8 '15 at 22:54
1
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What does “zend_mm_heap corrupted” mean
...in(void) {
void **mem = malloc(sizeof(char)*3);
void *ptr;
/* read past end */
ptr = (char*) mem[5];
/* write past end */
memcpy(mem[5], "whatever", sizeof("whatever"));
/* free invalid pointer */
free((void*) mem[3]);
return 0;
}
The code above can be co...
Java: getMinutes and getHours
...he java.time package which is finally a worthwhile Java standard solution! Read this article, Java SE 8 Date and Time, for a good amount of information on java.time outside of hours and minutes.
In particular, look at the LocalDateTime class.
Hours and minutes:
LocalDateTime.now().getHour();
Loc...
See line breaks and carriage returns in editor
...-set the fileformat as unix without actually changing the contents. So vim reads it like a Unix file, sees the CR characters as extra and displays them as ^M.
– sundar - Reinstate Monica
Apr 20 '18 at 22:41
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How can I improve my paw detection?
...
If you're just wanting (semi) contiguous regions, there's already an easy implementation in Python: SciPy's ndimage.morphology module. This is a fairly common image morphology operation.
Basically, you have 5 steps:
def find_paws(data, smooth_radius=5, threshold=0.0001):
dat...
What do I have to do to get Core Data to automatically migrate models?
I have read the documentation about automatic /lightweight migration for Core Data models - but I am having problems implementing it.
...
HTML5 best practices; section/header/aside/article elements
...ormation on how each of the major HTML5 tags can/should be used (I suggest reading the full source linked at the bottom):
section – Used for grouping together thematically-related content. Sounds like a div element, but it’s not. The div has no semantic meaning. Before replacing all your di...
Efficiency of premature return in a function
...The optimising compiler is almost always smarter than you.
Concentrate on readability and maintainability.
If you want to see what happens, build these with optimisations on and look at the assembler output.
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