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Do you (really) write exception safe code? [closed]
... of analysis in mind.
The lowest guarantee offered is basic, but then, the ordering of each instruction makes the whole function "none", because if 3. throws, x will leak.
The first thing to do would be to make the function "basic", that is putting x in a smart pointer until it is safely owned by th...
What is the difference between a var and val definition in Scala?
...a number out of them. For example, if I have a queue with 2, 1, 3, in that order, I want to get back the number 213. Let's first solve it with a mutable.Queue:
def toNum(q: scala.collection.mutable.Queue[Int]) = {
var num = 0
while (!q.isEmpty) {
num *= 10
num += q.dequeue
}
num
}
...
How to overlay one div over another div
...sition: static. This means the element will be positioned according to its order in the HTML structure, with few exceptions.
The other position values are relative, absolute, sticky, and fixed. By setting an element's position to one of these other values it's now possible to use a combination of t...
How do I force Postgres to use a particular index?
...
I even had to set random_page_cost = 0.1 in order to make index scan work on large (~600M rows table) in Pg 10.1 on Ubuntu. Without the tweak, seq scan (despite being parallel) was taking 12 mins (Note that Analyze table was performed!). Drive is SSD. After the tweak,...
How to make modal dialog in WPF?
...wDialog()!". But that is the method (not .Show()) that you want to use in order to block use of the underlying window and to keep the code from continuing until the modal window is closed.
First, you need 2 WPF windows. (One will be calling the other.)
From the first window, let's say that was c...
MVC DateTime binding with incorrect date format
...
When looking for the value to parse, the framework looks in a specific order namely:
RouteData (not shown above)
URI query string
Request form
Only the last of these will be culture aware however. There is a very good reason for this, from a localization perspective. Imagine ...
How do I remove leading whitespace in Python?
....lstrip()
'hello world!'
Edit
As balpha pointed out in the comments, in order to remove only spaces from the beginning of the string, lstrip(' ') should be used:
>>> ' hello world with 2 spaces and a tab!'.lstrip(' ')
'\thello world with 2 spaces and a tab!'
Related question:
Trim...
nginx - client_max_body_size has no effect
...ax_body_size 200M;
}
(in my ISPconfig 3 setup, this block is in the /etc/nginx/nginx.conf file)
server {
...
client_max_body_size 200M;
}
location / {
...
client_max_body_size 200M;
}
(in my ISPconfig 3 setup, these blocks are in the /etc/nginx/conf.d/default.conf file)
A...
Postgres DB Size Command
...g_size_pretty(pg_database_size(t1.datname)) as db_size
from pg_database t1
order by pg_database_size(t1.datname) desc;
If you intend the output to be consumed by a machine instead of a human, you can cut the pg_size_pretty() function.
...
What is the preferred syntax for defining enums in JavaScript?
... some assumptions can no longer be made (that value represents the correct order for the size for example).
Remember, in JavaScript an object is just like a map or hash table. A set of name-value pairs. You can loop through them or otherwise manipulate them without knowing much about them in advan...