大约有 36,010 项符合查询结果（耗时：0.0507秒） [XML]
Wait for a void async method
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await Task.Run(() => blah()) is misleading. This does not await the completion of async function blah, it just awaits the (trivial) creation of the task, and continues immediately before blah() has completed.
– Jonathan Lidbeck
Apr 17 ...
Obtaining a powerset of a set in Java
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@CosminVacaroiu ...what else could it possibly do?
– user253751
Mar 13 '15 at 4:54
3
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Reason to Pass a Pointer by Reference in C++?
...r than the object that the pointer is pointing to.
This is similar to why double pointers are used; using a reference to a pointer is slightly safer than using pointers.
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POST unchecked HTML checkboxes
...ing the form, disable the hidden input based on the checked condition:
if(document.getElementById("testName").checked) {
document.getElementById('testNameHidden').disabled = true;
}
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im...
What is the proper way to test if a parameter is empty in a batch file?
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You do not make it clear that it DOES NOT work with spaces. Use @jamesdlin answer instead.
– JB. With Monica.
Jun 12 '17 at 11:56
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Set Colorbar Range in matplotlib
...10, .1)
X, Y = np.meshgrid(x,y)
data = 2*( np.sin(X) + np.sin(3*Y) )
def do_plot(n, f, title):
#plt.clf()
plt.subplot(1, 3, n)
plt.pcolor(X, Y, f(data), cmap=cm, vmin=-4, vmax=4)
plt.title(title)
plt.colorbar()
plt.figure()
do_plot(1, lambda x:x, "all")
do_plot(2, lambda x:np....
Uniq by object attribute in Ruby
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You can improve it with a to_proc (ruby-doc.org/core-1.9.3/Symbol.html#method-i-to_proc): @photos.uniq &:album_id
– joaomilho
Nov 10 '13 at 15:42
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How to activate virtualenv?
...ute
New python executable in venv/bin/python
Installing distribute.........done.
Installing pip................done.
$ source venv/bin/activate
(venv)$ python
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Is it safe to check floating point values for equality to 0?
I know you can't rely on equality between double or decimal type values normally, but I'm wondering if 0 is a special case.
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Checking if jquery is loaded using Javascript
...brary and that library happens to share the same $() syntax.
Remove your $(document).ready() (use something like window.onload instead):
window.onload = function() {
if (window.jQuery) {
// jQuery is loaded
alert("Yeah!");
} else {
// jQuery is not loaded
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