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Read whole ASCII file into C++ std::string [duplicate]
...pdate: Turns out that this method, while following STL idioms well, is actually surprisingly inefficient! Don't do this with large files. (See: http://insanecoding.blogspot.com/2011/11/how-to-read-in-file-in-c.html)
You can make a streambuf iterator out of the file and initialize the string with it...
Efficiency of premature return in a function
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There is no difference at all:
=====> cat test_return.cpp
extern void something();
extern void something2();
void test(bool b)
{
if(b)
{
something();
}
else
something2();
}
=====> cat test_return2.cpp
extern voi...
Escape string for use in Javascript regex [duplicate]
...mp;'); // $& means the whole matched string
}
Example
escapeRegExp("All of these should be escaped: \ ^ $ * + ? . ( ) | { } [ ]");
>>> "All of these should be escaped: \\ \^ \$ \* \+ \? \. \( \) \| \{ \} \[ \] "
(NOTE: the above is not the original answer; it was edited to show th...
Obscure a UITextField password
... Is there a way that I can even hide the character to be displayed at all? I don't want the character to be seen at all.
– Maninder Singh
Aug 1 '19 at 3:51
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How do I run a program with commandline arguments using GDB within a Bash script?
When running a program on GDB, usually, the arguments for the program are given at the run command. Is there a way to run the program using GDB and as well as give arguments within a shell script?
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Replacing all non-alphanumeric characters with empty strings
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Use [^A-Za-z0-9].
Note: removed the space since that is not typically considered alphanumeric.
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How to convert integer timestamp to Python datetime
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datetime.datetime.fromtimestamp() is correct, except you are probably having timestamp in miliseconds (like in JavaScript), but fromtimestamp() expects Unix timestamp, in seconds.
Do it like that:
>>> import datetime
>>> your_timestamp = 1331856000000
...
What is the meaning of “vnd” in MIME types?
...ep wondering why both the category and type of Android MIME types are prefixed with vnd. For example:
2 Answers
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PDOException SQLSTATE[HY000] [2002] No such file or directory
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How to parse XML to R data frame
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Data in XML format are rarely organized in a way that would allow the xmlToDataFrame function to work. You're better off extracting everything in lists and then binding the lists together in a data frame:
require(XML)
data <- xmlParse("http://forecast.weather.gov/MapClick.php?lat=...