大约有 44,000 项符合查询结果(耗时:0.0506秒) [XML]
Difference between size_t and unsigned int?
...g etc. do depend on the system: If you take a look at limits.h you will at least under Unices see that the max value for ints depends on the word size of the system.
– Pryftan
Nov 17 '19 at 21:44
...
Finding the number of days between two dates
...stance in seconds between two consecutive midnights is surely not 86400 at least twice a year when daylight saving time comes into play. Comparing two dates across a DST boundary will yield the wrong answer.
So even if you use the "hack" of forcing all date timestamps to a fixed hour, say midnight ...
Running PostgreSQL in memory only
... data durability/safety features turned off) than running on a ramdisk, at least on Linux.
– Craig Ringer
Nov 20 '14 at 4:50
|
show 1 more c...
Is floating-point math consistent in C#? Can it be?
...
Is this a problem for C#?
Yes. Different architectures are the least of your worries, different framerates etc. can lead to deviations due to inaccuracies in float representations - even if they are the same inaccuracies (e.g. same architecture, except a slower GPU on one machine).
Can...
What is object slicing?
...
This isn't "slicing", or at least a benign variant of it. The real problem occurs if you do B b1; B b2; A& b2_ref = b2; b2 = b1. You might think you have copied b1 to b2, but you haven't! You have copied a part of b1 to b2 (the part of b1 that B inh...
Scala vs. Groovy vs. Clojure [closed]
...ong before the 1.0 in 2007 and has no participated since then. There is at least as much without him in the project as there was with him.
– blackdrag
May 8 '12 at 12:41
...
Null coalescing in powershell
...hell versions prior to 7 do have an actual null coalescing operator, or at least an operator that is capable of such behavior. That operator is -ne:
# Format:
# ($a, $b, $c -ne $null)[0]
($null, 'alpha', 1 -ne $null)[0]
# Output:
alpha
It's a bit more versatile than a null coalescing operator, ...
What is the JavaScript >>> operator and how do you use it?
... array object, which cannot be anything besides a non-negative integer (at least in FF), so it is not a possibility here. Also, {} || 1 returns {} so you are no better off if this.length is an object. The benefit to also unary casting this.length in the first method is that it handles cases where th...
Can you help me understand this? “Common REST Mistakes: Sessions are irrelevant”
...
This is better than the accepted answer. At the least, it accepts the suggestion as RESTy, which makes sense. However, I don't see why the passed information cannot be used to do user dependent authorization. Some users might have access to some data and others not. That...
Parsing XML with namespace in Python via 'ElementTree'
...
this answer helped my to at least be able to use the find function. No need to create your own prefix. I just did key = list(root.nsmap.keys())[0] and then added the key as prefix: root.find(f'{key}:Tag2', root.nsmap)
– Eelco van V...
