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C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...);
if (bSucceed)
{
markup.IntoElem();
bSucceed = markup.FindElem(_T("update"));
if (bSucceed)
{
_tcsncpy_s(param.version, markup.GetAttrib(_T("ver")), sizeof(param.version));
_tcsncpy_s(param.pkgname, markup.GetAttrib(_T("pkg")), sizeof(param.pkgname));
if (markup.GetAttr...
Run an OLS regression with Pandas Data Frame
...df = pd.DataFrame({"A": [10,20,30,40,50], "B": [20, 30, 10, 40, 50], "C": [32, 234, 23, 23, 42523]})
>>> result = sm.ols(formula="A ~ B + C", data=df).fit()
>>> print(result.params)
Intercept 14.952480
B 0.401182
C 0.000352
dtype: float64
>>> pri...
Why is it slower to iterate over a small string than a small list?
...> >> 31 POP_TOP
#>>> 32 LOAD_CONST 0 (None)
#>>> 35 RETURN_VALUE
def string_iterate():
[item for item in "abc"]
dis.dis(string_iterate)
#>>> 2 0 BUILD_LIST 0
#&g...
Best way to implement Enums with Core Data
...r value. Make sure to set the data type in the core data model as "Integer 32".
MyEntity.h
typedef enum {
kEnumThing, /* 0 is implied */
kEnumWidget, /* 1 is implied */
} MyThingAMaBobs;
@interface myEntity : NSManagedObject
@property (nonatomic) int32_t coreDataEnumStorage;
Elsewhere in code
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Decorators with parameters?
... |
edited Oct 18 '19 at 5:32
Boris
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answered May ...
Macro vs Function in C
...
Isn't that, in context of low-level MCU (AVRs, i.e. ATMega32) computing, Macros are better choice, as they do not grow call stack, like function calls do?
– hardyVeles
Aug 29 '19 at 22:22
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Update multiple rows in same query using PostgreSQL
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Benjamin CrouzierBenjamin Crouzier
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...
How to toggle a value in Python
...gt; print "%.2f usec/pass" % (1000000 * t4.timeit(number=100000)/100000)
6.32 usec/pass
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Total memory used by Python process?
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326
Here is a useful solution that works for various operating systems, including Linux, Windows 7...
Just what is an IntPtr exactly?
...prets memory addresses as integer numbers (int).
Why is it int instead of uint?
There is no good reason.
Why use pointers?
Pointers are a lot of fun. With so much of the computer being controlled by memory, pointers empower a programmer with more control of their program's memory.
Memory monit...