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MassAssignmentException in Laravel
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232
Read this section of Laravel doc : http://laravel.com/docs/eloquent#mass-assignment
Laravel p...
Why do we need boxing and unboxing in C#?
... But there are a few caveats to be aware of:
This is correct:
double e = 2.718281828459045;
int ee = (int)e;
This is not:
double e = 2.718281828459045;
object o = e; // box
int ee = (int)o; // runtime exception
Instead you must do this:
double e = 2.718281828459045;
object o = e; // box
int ...
Is there a cross-browser onload event when clicking the back button?
... |
edited Feb 7 '10 at 23:00
Nickolay
27.1k77 gold badges8787 silver badges152152 bronze badges
answe...
C# vs Java Enum (for those new to C#)
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211
Enumerations in the CLR are simply named constants. The underlying type must be integral. In J...
Dark theme in Netbeans 7 or 8
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205
Darcula
UPDATE 2016-02: NetBeans 8 now has a Darcula plugin, better and more complete than th...
Ternary operator is twice as slow as an if-else block?
...duced by the X86 and X64 JITs for each of these cases.
X86, if/then
32: foreach (int i in array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 cmp dword ptr [esi+4],0
00000082 7E 1C jle 000000A0
00000084 8B 44 ...
What's a correct and good way to implement __hash__()?
...|
edited Jul 7 '19 at 11:12
Mark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
ans...
Naming returned columns in Pandas aggregate function? [duplicate]
...())
# height age Seed
# 1 4.51 3 301
# 15 10.89 5 301
# 29 28.72 10 301
# 43 41.74 15 301
# 57 52.70 20 301
df = data.groupby('Seed').agg(
{'age':['sum'],
'height':['mean', 'std']})
print(df.head())
# age height
# sum std ...