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How can I check if a directory exists in a Bash shell script?
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For modern versions of bash, ksh, etc. [...] is a builtin
– fpmurphy
Mar 24 '11 at 14:22
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Setting up foreign keys in phpMyAdmin?
... "Structure" tab, just below the tab row that shows "Browse", "Structure", etc.
– Astitva Srivastava
Apr 2 '18 at 18:42
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Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...HandlerSocket的潜力。
注：apt包管理下的配置文件一般是/etc/mysql/my.cnf，否则一般是/etc/my.cnf
最后登陆MySQL并激活HandlerSocket插件：
mysql> INSTALL PLUGIN handlersocket soname 'handlersocket.so';
重启一下MySQL服务，如果没有问题，就能在MySQL里...
Compiler error: memset was not declared in this scope
...per equivalent C++ headers, <cstring>/<cstdio>/<cstdlib>/etc, rather than C's <string.h>/<stdio.h>/<stdlib.h>/etc.
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Python error “ImportError: No module named”
...rsion:
.:/usr/lib/python
.:/usr/lib/python2.6
.:/usr/lib/python2.7 and etc.
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How do short URLs services work?
...e routing make handling the incoming URL's really easy (Ruby, ASP.NET MVC, etc).
So, on your webserver you might have a route action that looks like (pseudo code):
Route: www.mytinyurl.com/{UrlID}
Route Action: RouteURL(UrlID);
Which routes any incoming request to your server that has any text a...
How to persist a property of type List in JPA?
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We can also use this.
@Column(name="arguments")
@ElementCollection(targetClass=String.class)
private List<String> arguments;
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Hibernate vs JPA vs JDO - pros and cons of each? [closed]
... datasources, db4o, hbase, ldap, bigtable, couchdb (plugins for cassandra) etc.
you can easily switch from an sql to non-sql datasource and vice-versa.
no proxy objects and therefore less pain with regards to hashcode() and equals() implementations
more POJO and hence less workarounds required
suppo...
C library function to perform sort
...structure first, and if they're equal, then two doubles, then two strings, etc. There's more than one way to do it, in C as well as Perl.
– Jonathan Leffler
Nov 24 '17 at 7:33
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How to detect the currently pressed key?
...s an example only. So how do you detect other keys such as A to Z, 0 to 9 etc.
– Ash
Dec 18 '09 at 10:03
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