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How do I provide JVM arguments to VisualVM?
...
Should be able to modify the memory settings in %JDK_HOME%\lib\visualvm\etc\visualvm.conf
Xms and Xmx are in the default_options line.
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instantiate a class from a variable in PHP?
...re the full namespace path of a class.
MyClass.php
namespace com\company\lib;
class MyClass {
}
index.php
namespace com\company\lib;
//Works fine
$i = new MyClass();
$cname = 'MyClass';
//Errors
//$i = new $cname;
//Works fine
$cname = "com\\company\\lib\\".$cname;
$i = new $cname;
...
Installing pip packages to $HOME folder
...lled in $HOME/.local/bin/hg and the rest of the hg package in $HOME/.local/lib/pythonx.y/site-packages/.
Note, that the above is true for Python 2.6. There has been a bit of controversy among the Python core developers about what is the appropriate directory location on Mac OS X for PEP370-style u...
New to MongoDB Can not run command mongo
...applies that you also see the lock file):
first>youridhere@ubuntu:/var/lib/mongodb$ sudo service mongodb start
then >youridhere@ubuntu:/var/lib/mongodb$ sudo rm mongod.lock*
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TypeError: p.easing[this.easing] is not a function
...tion to only include the easing in the download, or at least just the base library plus easing.
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micro:bit 微控制器教程 · App Inventor 2 中文网
...理
数据传输
事件处理
应用场景
1. 机器人控制
2. 传感器数据监控
3. 双向通信
常见问题
Q: 扫描不到 micro:bit 设备？
Q: 连接失败？...
Python multiprocessing PicklingError: Can't pickle
...eption in thread Thread-2:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 505, in run
self.__target(*self.__args, **self.__kwargs)
File "/usr/lib/python2.7/multiprocessing...
How do I check whether a checkbox is checked in jQuery?
...ggle(this.checked);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" id="isAgeSelected"/>
<div id="txtAge" style="display:none">Age is something</div>
...
How to inspect the return value of a function in GDB?
... as "ppc64-yellowdog-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib64/libthread_db.so.1".
(gdb) break __libc_start_main
Breakpoint 1 at 0x10013cb0
(gdb) r
Starting program: /bin/ls
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols foun...
Removing an item from a select box
...e='option1']").remove();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="selectBox" id="selectBox">
<option value="option1">option1</option>
<option value="option2">option2</option>
<option...