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StringBuilder vs String concatenation in toString() in Java
... reference also states that this is optional. In fact, I just did a simple test with JRE 1.6.0_15 and I didn't see any compiler optimization in the decompiled class.
– bruno conde
Oct 7 '09 at 16:07
...
How can I find the number of arguments of a Python function?
... help function only shows what the docstring says. Have you even tested if it works with the function definition in the question?
– 0xc0de
Nov 2 '14 at 17:35
1
...
How can I tell IntelliJ's “Find in Files” to ignore generated files?
...of getting the same result without needing to configure a custom scope.
I tested this in IntelliJ Ultimate 14.1.4. I have no idea how it behaves in other versions, but I suspect most of v14 at least will behave the same.
sh...
How to check if an email address exists without sending an email?
...r via telnet to ask whether an email address exists. Here's an example of testing an email address for stackoverflow.com:
C:\>nslookup -q=mx stackoverflow.com
Non-authoritative answer:
stackoverflow.com MX preference = 40, mail exchanger = STACKOVERFLOW.COM.S9B2.PSMTP.com
stackoverflow.c...
Python read-only property
...y
... def a(self):
... return self._a
...
>>> a = A('test')
>>> a.a
'test'
>>> a.a = 'pleh'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: can't set attribute
...
Are Javascript arrays sparse?
... toString() before being added to the hash. You can confirm this with some test code:
<script>
var array = [];
array[0] = "zero";
array[new Date().getTime()] = "now";
array[3.14] = "pi";
for (var i in array) {
alert("array["+i+"] = " + array[i] + ", typeof("+i+") == " + typeo...
__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...int(const char *format,...)
__attribute__((format(printf,1,2)));
void test()
{
myprint("i=%d/n",6);
myprint("i=%s/n",6);
myprint("i=%s/n","abc");
myprint("%s,%d,%d/n",1,2);
}
运行$gcc –Wall –c attribute.c attribute后，输出结果为：
attribute...
Suppress warning CS1998: This async method lacks 'await'
...ith #pragma:
#pragma warning disable 1998
public async Task<object> Test()
{
throw new NotImplementedException();
}
#pragma warning restore 1998
If this is common enough, you could put the disable statement at the top of the file and omit the restore.
http://msdn.microsoft.com/en-us/li...
What does the “at” (@) symbol do in Python?
...r: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
decorators: decorator+
--
testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
'<<=' | '>>=' | '**=' | '//=')
--
arith_expr: term (('+...
How to use getJSON, sending data with post method?
..._GET['callback']."(".json_encode($myarr).");");
I made some cross-domain tests and it seems to work. Still need more testing though.
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