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How to escape a single quote inside awk
...will run into a lot of of escaping, like awk "{ print \"abc\", \$1 }". Any time a double quote appears in the awk program, it has to be escaped so that it doesn't close the shell quote. And compare this: awk '{print "\\"}' (print a backslash) versus what it takes with double quotes: awk "BEGIN {pri...
Launching Google Maps Directions via an intent on Android
...ent);
NOTE (by @TheNail): Not working in Maps v.7 (latest version at the time of writing). Will ignore the coordinates and search for an object with the given name between the parentheses. See also Intent for Google Maps 7.0.0 with location
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Why doesn't nodelist have forEach?
...t(x) path, which did something weird since x wasn't a real array.
For some time there was a proposal for an Elements class that was a real subclass of Array, and would be used as "the new NodeList". However, that was removed from the DOM Standard, at least for now, since it wasn't feasible to implem...
Find number of months between two Dates in Ruby on Rails
I have two Ruby on Rails DateTime objects. How to find the number of months between them? (Keeping in mind they might belong to different years)
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What is 'Context' on Android?
... suitable timings, right?
There are many other things you like during the time of stay. How do you get these things?
You ask the room-service person to bring these things for you.
Here the room-service person is the context considering you are the
single activity and the hotel to be your app, fin...
Whitespace Matching Regex - Java
...eemed to notice that. I guess the stupidest little errors throw us off sometimes, eh?
– user372743
Jan 19 '11 at 2:09
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How do I select elements of an array given condition?
...array(['o', 'o', 'a'],
dtype='|S1')
by the numbers:
>>> %timeit (a < b) & (b < c)
The slowest run took 32.97 times longer than the fastest. This could mean that an intermediate result is being cached.
100000 loops, best of 3: 1.15 µs per loop
>>> %timeit np.log...
What is __pycache__?
...
Wouldn't this be undone every time you run the code?
– Holloway
Feb 6 '15 at 12:39
2
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How to search a specific value in all tables (PostgreSQL)?
...
Each qualifying row is returned once only, even when it matches multiple times (as opposed to other answers here).
This searches the whole DB except for system catalogs. Will typically take a long time to finish. You might want to restrict to certain schemas / tables (or even columns) like demons...
Read file line by line using ifstream in C++
...your software, you may consider using the C language. This code can be 4-5 times faster than the C++ versions above, see benchmark below
FILE* fp = fopen(FILENAME, "r");
if (fp == NULL)
exit(EXIT_FAILURE);
char* line = NULL;
size_t len = 0;
while ((getline(&line, &len, fp)) != -1) {
...