大约有 30,000 项符合查询结果（耗时：0.0530秒） [XML]
How to use the PI constant in C++
I want to use the PI constant and trigono<em>mem>etric functions in so<em>mem>e C++ progra<em>mem>. I get the trigono<em>mem>etric functions with include &a<em>mem>p;lt;<em>mem>ath.h&a<em>mem>p;gt; . However, there doesn't see<em>mem> to be a definition for PI in this header file.
...
What is the difference between RegExp’s exec() function and String’s <em>mem>atch() function?
...
exec with a global regular expression is <em>mem>eant to be used in a loop, as it will still retrieve all <em>mem>atched subexpressions. So:
var re = /[^\/]+/g;
var <em>mem>atch;
while (<em>mem>atch = re.exec('/a/b/c/d')) {
// <em>mem>atch is now the next <em>mem>atch, in array for<em>mem>.
}
// No <em>mem>ore <em>mem>at...
How to sort a datafra<em>mem>e by <em>mem>ultiple colu<em>mem>n(s)
I want to sort a data.fra<em>mem>e by <em>mem>ultiple colu<em>mem>ns. For exa<em>mem>ple, with the data.fra<em>mem>e below I would like to sort by colu<em>mem>n z (descending) then by colu<em>mem>n b (ascending):
...
Break when a value changes using the Visual Studio debugger
...
In the Visual Studio 2005 <em>mem>enu:
Debug -&a<em>mem>p;gt; New Breakpoint -&a<em>mem>p;gt; New Data Breakpoint
Enter:
&a<em>mem>p;a<em>mem>p;<em>mem>yVariable
share
|
i<em>mem>prove this answer
...
<em>Mem>ySQL error code: 1175 during UPDATE in <em>Mem>ySQL Workbench
I'<em>mem> trying to update the colu<em>mem>n visited to give it the value 1. I use <em>Mem>ySQL workbench, and I'<em>mem> writing the state<em>mem>ent in the SQL editor fro<em>mem> inside the workbench. I'<em>mem> writing the following co<em>mem><em>mem>and:
...
Git error on co<em>mem><em>mem>it after <em>mem>erge - fatal: cannot do a partial co<em>mem><em>mem>it during a <em>mem>erge
...in a conflict. I resolved the conflict and everything is fine now (I used <em>mem>ergetool also).
17 Answers
...
How can I stage and co<em>mem><em>mem>it all files, including newly added files, using a single co<em>mem><em>mem>and?
How can I stage and co<em>mem><em>mem>it all files, including newly added files, using a single co<em>mem><em>mem>and?
12 Answers
...
Convert a Python list with strings all to lowercase or uppercase
...
It can be done with list co<em>mem>prehensions. These basically take the for<em>mem> of [function-of-ite<em>mem> for ite<em>mem> in so<em>mem>e-list]. For exa<em>mem>ple, to create a new list where all the ite<em>mem>s are lower-cased (or upper-cased in the second snippet), you would use:
&a<em>mem>p;gt;&a<em>mem>p;gt;&a<em>mem>p;g...
reducing nu<em>mem>ber of plot ticks
I have too <em>mem>any ticks on <em>mem>y graph and they are running into each other.
7 Answers
7
...
Getting an “a<em>mem>biguous redirect” error
The following line in <em>mem>y Bash script
11 Answers
11
...