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Difference between `set`, `setq`, and `setf` in Common Lisp?
...
(set ls '(1 2 3 4)) => Error - ls has no value
(set 'ls '(1 2 3 4)) => OK
(setq ls '(1 2 3 4)) => OK - make ls to (quote ls) and then have the usual set
(setf ls '(1 2 3 4)) => OK - same as setq so far BUT
(setf (car ls) 10) => Make...
The model used to open the store is incompatible with the one used to create the store
...StoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error])
Replace nil options with @{NSMigratePersistentStoresAutomaticallyOption:@YES, NSInferMappingModelAutomaticallyOption:@YES} (actually provided in the commented code in that method)
Here you go, have fun!
P...
Delete all records in a table of MYSQL in phpMyAdmin
...raint in the table then those record will not be deleted and will give the error.
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What is the difference between DSA and RSA?
.../web.archive.org/web/20140212143556/http://courses.cs.tamu.edu:80/pooch/665_spring2008/Australian-sec-2006/less19.html
RSA
RSA encryption and decryption are commutative
hence it may be used directly as a digital signature scheme
given an RSA scheme {(e,R), (d,p,q)}
to sign a message M, compute:
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SensorUtil 传感器工具扩展：在后台和屏幕关闭时保持传感器工作 · App Inv...
...rager 组件参考
此组件用于平滑传感器数据。它连接到传感器组件并自动收集数据。
属性 Properties
平均值 Average
计算存储值的算术平均值。
缓存大小 CacheSize
要聚合的值的数量。
计数 Count
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Using jQuery To Get Size of Viewport
...unction() {
if(typeof $=='undefined') {
alert("PROGRAMMER'S Error: you haven't called JQuery library");
} else if (typeof $.ui=='undefined') {
alert("PROGRAMMER'S Error: you haven't installed the UI Jquery library");
}
if(document.doctype==null || screen.heig...
How do I find the location of my Python site-packages directory?
...ysconfig module instead:
python3 -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])'
The per user site-packages directory (PEP 370) is where Python installs your local packages:
python -m site --user-site
If this points to a non-existing directory check the exit status of Python and ...
PHPUnit: assert two arrays are equal, but order of elements not important
...ected, $actual), array_diff($actual, $expected)));
For a more detailed error message (while debugging), you can also test like this (thanks @DenilsonSá):
$this->assertSame(array_diff($expected, $actual), array_diff($actual, $expected));
Old version with bugs inside:
$this->assertEmp...
get current url in twig template?
...his made my Functional Test Fail: Uncaught PHP Exception PHPUnit_Framework_Error_Notice: "Undefined index: REQUEST_URI"
– Robin
Aug 15 '14 at 10:18
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How to set up a cron job to run an executable every hour?
...e
path_to_exe >> log_file
to see the output of your command
also errors can be redirected with
path_to_exe &> log_file
also you can use
crontab -l
to check if your edits were saved.
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