大约有 23,000 项符合查询结果（耗时：0.0409秒） [XML]
Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...pandas DataFrame and I want to delete rows from it where the length of the string in a particular column is greater than 2.
...
How to round a number to significant figures in Python
...
%g in string formatting will format a float rounded to some number of significant figures. It will sometimes use 'e' scientific notation, so convert the rounded string back to a float then through %s string formatting.
>>&g...
Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
...zip is one of the functions provided by the protonpack library.
Stream<String> streamA = Stream.of("A", "B", "C");
Stream<String> streamB = Stream.of("Apple", "Banana", "Carrot", "Doughnut");
List<String> zipped = StreamUtils.zip(streamA,
st...
Find out what process registered a global hotkey? (Windows API)
...PI, ActiveX, CommCtrl;
procedure GetShellLinkHotKey;
var
LinkFile : WideString;
SL: IShellLink;
PF: IPersistFile;
HotKey : Word;
HotKeyMod: Byte;
HotKeyText : string;
begin
LinkFile := 'C:\Temp\Temp.lnk';
OleCheck(CoCreateInstance(CLSID_ShellLink, nil, CLSCTX_INPROC_SERVER, IShell...
C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...mp 或其 TCHAR 版本 _tcscmp 的模板特化：
// specialization for strings
template<>
int compare<LPCTSTR>(LPCTSTR s1, LPCTSTR s2)
{
return _tcscmp(s1, s2);
}
没错，这样做完全正确，现在的问题是：将这个特化放在何处？显然是要放在模板的头文件中...
Why is using 'eval' a bad practice?
...a security vulnerability, and it has to do with the trustworthiness of the string it's given as input. If that string comes, in whole or in part, from the outside world, there's a possibility of a scripting attack on your program if you're not careful. But that's thge derangement of an outside attac...
Is there an easy way to check the .NET Framework version?
...ry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP");
string[] version_names = installed_versions.GetSubKeyNames();
//version names start with 'v', eg, 'v3.5' which needs to be trimmed off before conversion
double Framework = Convert.ToDouble(version_names[version_names.Length -...
How can you check which options vim was compiled with?
...ursorshape +dialog_con +diff +digraphs
-dnd -ebcdic -emacs_tags +eval +ex_extra +extra_search -farsi +file_in_path
+find_in_path +float +folding -footer +fork() -gettext -hangul_input +iconv
+insert_expand +jumplist -keymap -langmap +libcall +linebreak +lispindent
+listcmds +localmap -lua +menu ...
Is there a difference between using a dict literal and a dict constructor?
...o be extra nice. Just as it always seems to offer to convert single-quoted strings into double-quoted -- for no apparent reason.
– maligree
Jul 7 '11 at 12:53
1
...
SELECT * FROM X WHERE id IN (…) with Dapper ORM
...
Dapper supports this directly. For example...
string sql = "SELECT * FROM SomeTable WHERE id IN @ids"
var results = conn.Query(sql, new { ids = new[] { 1, 2, 3, 4, 5 }});
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