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How do I run only specific tests in Rspec?
...do
1.should == 1
end
end
$ rspec --tag focus spec/my_spec.rb
More info on GitHub. (anyone with a better link, please advise)
(update)
RSpec is now superbly documented here. See the --tag option section for details.
As of v2.6 this kind of tag can be expressed even more simply by includin...
How to keep a Python script output window open?
...nction call
except Exception:
import sys
print sys.exc_info()[0]
import traceback
print traceback.format_exc()
print "Press Enter to continue ..."
raw_input()
To keep the window open in any case:
if __name__ == '__main__':
try:
## ...
How do I remove a single breakpoint with GDB?
...
You can list breakpoints with:
info break
This will list all breakpoints. Then a breakpoint can be deleted by its corresponding number:
del 3
For example:
(gdb) info b
Num Type Disp Enb Address What
3 breakpoint keep y ...
print call stack in C or C++
...n the file you want to debug. */
#include <stdio.h>
#include <execinfo.h>
void print_trace(void) {
char **strings;
size_t i, size;
enum Constexpr { MAX_SIZE = 1024 };
void *array[MAX_SIZE];
size = backtrace(array, MAX_SIZE);
strings = backtrace_symbols(array, size...
How to pull specific directory with git
...l>
git config core.sparsecheckout true
echo <dir1>/ >> .git/info/sparse-checkout
echo <dir2>/ >> .git/info/sparse-checkout
echo <dir3>/ >> .git/info/sparse-checkout
git pull origin master
To do what OP wants (work on only one dir), just add that one dir to .g...
MySQL dump by query
...n restoring from the saved data file, make sure you add in the --no-create-info option. See my answer for an example.
– Gary
Dec 5 '13 at 18:28
|
...
When vectors are allocated, do they use memory on the heap or the stack?
...
vector<Type> vect;
will allocate the vector, i.e. the header info, on the stack, but the elements on the free store ("heap").
vector<Type> *vect = new vector<Type>;
allocates everything on the free store.
vector<Type*> vect;
will allocate the vector on the stack...
Build and Version Numbering for Java Projects (ant, cvs, hudson)
... subversion revision number, time, user who ran the build, and some system information, stuff them into a .properties file that gets included in the application jar, and read that jar at runtime.
The ant code looks like this:
<!-- software revision number -->
<property name="version" valu...
T-SQL query to show table definition?
...o easy way to return the DDL. However you can get most of the details from Information Schema Views and System Views.
SELECT ORDINAL_POSITION, COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH
, IS_NULLABLE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Customers'
SELECT CONSTRAINT_NAME...
How to estimate how much memory a Pandas' DataFrame will need?
...gt; df.memory_usage(deep=True).sum()
(gives results in bytes)
462432
df.info()
Prints dataframe info to stdout. Technically these are kibibytes (KiB), not kilobytes - as the docstring says, "Memory usage is shown in human-readable units (base-2 representation)." So to get bytes would multiply by...