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What's the difference between ES6 Map and WeakMap?
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From the very same page, section "Why Weak Map?":
The em>x m>perienced JavaScript programmer will notice that this API could
be implemented in JavaScript with two arrays (one for keys, one for
values) shared by the 4 API methods. Such an implementation would have
two main inconv...
Remove duplicate dict in list in Python
...t not in seen:
seen.add(t)
new_l.append(d)
print new_l
Em>x m>ample output:
[{'a': 123, 'b': 1234}, {'a': 3222, 'b': 1234}]
Note: As pointed out by @alem>x m>is it might happen that two dictionaries with the same keys and values, don't result in the same tuple. That could happen if they ...
Should JAVA_HOME point to JDK or JRE?
I pointed the JAVA_HOME to C:\Program Files (m>x m>86)\Java\jre7 . It works fine. Afterwards, I unzipped ant and set up the environment variables related to Ant, I got the following error messages after typing "ant -version"
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Access to Modified Closure (2)
This is an em>x m>tension of question from Access to Modified Closure . I just want to verify if the following is actually safe enough for production use.
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Entity Framework code first unique column
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In Entity Framework 6.1+ you can use this attribute on your model:
[Indem>x m>(IsUnique=true)]
You can find it in this namespace:
using System.ComponentModel.DataAnnotations.Schema;
If your model field is a string, make sure it is not set to nvarchar(MAm>X m>) in SQL Server or you will see this error ...
Why doesn't Python have a sign function?
...ed behavior for edge cases - which sometimes might require the call to cmp(m>x m>,0).
I don't know why it's not a built-in, but I have some thoughts.
copysign(m>x m>,y):
Return m>x m> with the sign of y.
Most importantly, copysign is a superset of sign! Calling copysign with m>x m>=1 is the same as a sign functi...
How can you check which options vim was compiled with?
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You can see everything vim was compiled with by em>x m>ecuting
:version
To query for an em>x m>act feature like python you can use the has() function with the feature you are looking for. The code below will return a 1 if it has the feature or 0 if it does not.
:echo has('python'...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...N博客：http://blog.csdn.net/zjl_1026_2001/archive/2008/04/03/2246510.aspm>x m>
static_cast和reinterpret_cast揭秘
本文讨论static_cast<> 和 reinterpret_cast<>。
reinterpret_cast可以转换任意一个32bit整数，包括所有的指针和整数。可以把任何整数转成指针，也...
How do I get the opposite (negation) of a Boolean in Python?
...cient. It will create a list and then perform a linear search. Better than m>x m> in range(low, high) is low &lt;= m>x m> &lt; high.
– MRAB
Aug 11 '11 at 19:24
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