大约有 23,000 项符合查询结果（耗时：0.0383秒） [XML]
do { … } while (0) — what is it good for? [duplicate]
...n are fairly rare, but they do exist. One which springs to mind is a menu-based console application:
do {
char c = read_input();
process_input(c);
} while (c != 'Q');
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Apply CSS styles to an element depending on its child elements
...
As far as I'm aware, styling a parent element based on the child element is not an available feature of CSS. You'll likely need scripting for this.
It'd be wonderful if you could do something like div[div.a] or div:containing[div.a] as you said, but this isn't possible....
Execute Python script via crontab
...orial here.
Look at point 3 for a guide on how to specify the frequency.
Based on your requirement, it should effectively be:
*/10 * * * * /usr/bin/python script.py
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Count(*) vs Count(1) - SQL Server
..._GUID() in Oracle is quite computation intensive function.
In my test database, t_even is a table with 1,000,000 rows
This query:
SELECT COUNT(SYS_GUID())
FROM t_even
runs for 48 seconds, since the function needs to evaluate each SYS_GUID() returned to make sure it's not a NULL.
However, t...
Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...n your cache. L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2), they will be stored ...
System.Timers.Timer vs System.Threading.Timer
...nt sinks
at regular intervals. The class is intended for use as a server-based
or service component in a multithreaded environment; it has no user
interface and is not visible at runtime.
System.Threading.Timer,
which executes a single callback method on a thread pool thread at
regular i...
Font Awesome not working, icons showing as squares
...
If you use the Data URI Scheme with a base64 version of the font (can easily convert online), then you don't have to worry about proper file path and resource hosting.
– RenaissanceProgrammer
Apr 21 '15 at 19:13
...
NuGet behind a proxy
...ydomain\myUserName" />
<add key="http_proxy.password" value="base64encodedHopefullyEncryptedPassword" />
</config>
<!-- stuff -->
</configuration>
Incidentally, this also fixed my issue with NuGet only working the first time I hit the package source in Vi...
Is there a way to access an iteration-counter in Java's for-each loop?
...r this is that the for-each loop internally does not have a counter; it is based on the Iterable interface, i.e. it uses an Iterator to loop through the "collection" - which may not be a collection at all, and may in fact be something not at all based on indexes (such as a linked list).
...
How To: Best way to draw table in console app (C#)
...n now find and improve the following code in github!
I wrote this class based on some ideas here. The columns width is optimal, an it can handle object arrays with this simple API:
static void Main(string[] args)
{
IEnumerable<Tuple<int, string, string>> authors =
new[]
{
...