大约有 7,000 项符合查询结果（耗时：0.0278秒） [XML]
Purpose of memory alignment
...eviously is alignment on cache lines which are (for example, on some CPUs) 64B.
For more info on how much performance can be gained by leveraging caches, take a look at Gallery of Processor Cache Effects; from this question on cache-line sizes
Understanding of cache lines can be important for c...
eclipse won't start - no java virtual machine was found
...rgeAjay George
10.9k11 gold badge3636 silver badges4646 bronze badges
1
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Unit testing code with a file system dependency
...Rosenfield
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27
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Generate a heatmap in MatPlotLib using a scatter data set
...
x = np.random.randn(1000)
y = np.random.randn(1000)
sigmas = [0, 16, 32, 64]
for ax, s in zip(axs.flatten(), sigmas):
if s == 0:
ax.plot(x, y, 'k.', markersize=5)
ax.set_title("Scatter plot")
else:
img, extent = myplot(x, y, s)
ax.imshow(img, extent=extent,...
Python: print a generator expression?
...; (x*x for x in range(10))
<generator object <genexpr> at 0xb7485464>
This is sometimes called a generator comprehension, although I think the official name still is generator expression, there isn't really any difference, the parenthesis are only there to make the syntax valid. You do...
PowerShell says “execution of scripts is disabled on this system.”
...
If you're using Windows Server 2008 R2 then there is an x64 and x86 version of PowerShell both of which have to have their execution policies set. Did you set the execution policy on both hosts?
As an Administrator, you can set the execution policy by typing this into your PowerSh...
Default function arguments in Rust
..."arguments" struct and the From/Into traits:
pub struct FooArgs {
a: f64,
b: i32,
}
impl Default for FooArgs {
fn default() -> Self {
FooArgs { a: 1.0, b: 1 }
}
}
impl From<()> for FooArgs {
fn from(_: ()) -> Self {
Self::default()
}
}
impl Fro...
StackOverflow程序员推荐：每个程序员都应读的30本书 - 杂谈 - 清泛网 - 专...
...心理层面。其他书籍则处理算法。这些书都有自己所属的位置。
然而《计算机程序的构造和解释》与这些不同。这是一本会启发你的书，它会燃起你编写出色程序的热情；它还将教会你认识并欣赏美；它会让你有种敬畏，让你...
Java Error opening registry key
...w.exe and javaws.exe from your Windows\System32 folder and if you have an x64 system (Win 7 64 bits) also do the same under Windows\SysWOW64.
If you can't find them at these locations, try deleting them from C:\ProgramData\Oracle\Java\javapath.
...
Disable sorting for a particular column in jQuery DataTables
...mg src="https://www.gravatar.com/avatar/8edcff60cdcca2ad650758fa524d4990?s=64&amp;d=identicon&amp;r=PG" alt="" style="width: 64px; height: 64px; visibility: visible;"></td>
<td>2011/04/25</td>
<td>$320,800</td>
</tr>
...