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Very slow compile times on Visual Studio 2005
...
We have nearly 100 projects in one solution and a dev build time of only seconds :)
For local development builds we created a Visual Studio Addin that changes Project references to DLL references and unloads the unwanted projects (and an option to switch ...
Open a file from Cygwin
...
There is one interesting difference between this and "cygstart" that I noticed when running under Cygwin's bash shell. Consider the following two commands: 1) cygstart programThatCrashes.exe 2) cmd /c start programThatCrashes.e...
HTTPS connections over proxy servers
...ter it's core security checks being disabled.
– Van Jone
Nov 19 '15 at 2:25
1
@Van Jone Unconditi...
How do you perform a left outer join using linq extension methods
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Option 2 is true to the typical left outer join definition, but as I mentioned earlier is often unnecessarily complex depending on the data set.
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Determine the line of code that causes a segmentation fault?
How does one determine where the mistake is in the code that causes a segmentation fault ?
6 Answers
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Performance of FOR vs FOREACH in PHP
...he array, that's where you'll start seeing differences between them (since one will need to copy the entire array, and the reference can just modify inline)...
As for the iterators, foreach is equivalent to:
$it->rewind();
while ($it->valid()) {
$key = $it->key(); // If using the ...
What is the difference between join and merge in Pandas?
...oin(df2) always joins via the index of df2, but df1.merge(df2) can join to one or more columns of df2 (default) or to the index of df2 (with right_index=True).
lookup on left table: by default, df1.join(df2) uses the index of df1 and df1.merge(df2) uses column(s) of df1. That can be overridden by s...
Is there a “do … while” loop in Ruby?
...egin...end is quite powerful. The following is a common idiom to memoize a one-liner method with no params:
def expensive
@expensive ||= 2 + 2
end
Here is an ugly, but quick way to memoize something more complex:
def expensive
@expensive ||=
begin
n = 99
buf = ""
begin
...
PostgreSQL function for last inserted ID
...ue. The problem can even happen with CURRVAL, if the extra insertions are done intto the same persons table (this is much less usual, but the risk still exists).
Option 3: INSERT with RETURNING
INSERT INTO persons (lastname,firstname) VALUES ('Smith', 'John') RETURNING id;
This is the most c...
Run certain code every n seconds [duplicate]
...t__(self, interval, function, *args, **kwargs):
self._timer = None
self.interval = interval
self.function = function
self.args = args
self.kwargs = kwargs
self.is_running = False
self.start()
def _run(self):
self....