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configure: error: Unable to find gd.h anywhere under /usr/local/gd - ...
...在安装时出现：
configure.ac:64: error: possibly undefined macro: AM_ICONV
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation. 错误，在./configure 后加上--enable-m4_pattern_allow 重新编译即可通过
4.重新编译php，通过
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[es6] import, export, default cheatsheet - 更多技术 - 清泛网 - 专注C/C++及内核技术
... ...
}
export { each as forEach };
//------ main.js ------
import _, { each } from 'underscore';
...
4. Cyclical Dependencies
// lib.js
import Main from 'main';
var lib = {message: "This Is A Lib"};
export { lib as Lib };
// main.js
import { Lib } from 'lib';
export default c...
Difference between CouchDB and Couchbase
...erate features of CouchDB that you will not find in the Couchbase Server.
All of the names relating to CouchDB and Couchbase can be really confusing, so I've updated this answer, to begin with a brief explanation of the most important ones.
Names and confusion
There is CouchDB, CouchIO, CouchOne,...
How to initialize log4j properly?
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Log4j by default looks for a file called log4j.properties or log4j.xml on the classpath.
You can control which file it uses to initialize itself by setting system properties as described here (Look for the "Default Initialization Procedure" section).
For ex...
What is the best Distributed Brute Force countermeasure?
...so far I'm winning (so to speak). But I've run into a pretty non-trivial challenge (one that most auth libraries miss entirely, but I insist on handling it properly): how to deal intelligently with large-scale, distributed, variable-username brute-force attacks .
...
What is the largest Safe UDP Packet Size on the Internet
...rmation that you may not have anticipated. A 512-byte UDP payload is generally considered to do that, although even that does not leave quite enough space for a maximum size IP header.
share
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impr...
What is the Scala identifier “implicitly”?
...Implicit Views). In this case, the compiler looks for implicit members, locally defined in the current or enclosing scopes, inherited, or imported, that are either Functions from the type of that the.prefix to a type with selection defined, or equivalent implicit methods.
scala> 1.min(2) // Int ...
Devise form within a different controller
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As Andres says, the form calls helpers which are specified by Devise and so aren't present when you access a Devise form from a non-Devise controller.
To get around this, you need to add the following methods to the helper class of the controller you...
How to dismiss ViewController in Swift?
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_ = self.navigationController?.popViewController(animated: true)
– valexa
Jan 23 '17 at 10:06
add a ...
dynamic_cast and static_cast in C++
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Here's a rundown on static_cast<> and dynamic_cast<> specifically as they pertain to pointers. This is just a 101-level rundown, it does not cover all the intricacies.
static_cast< Type* >(ptr)
This takes the pointer in ptr and tries to safely cast it to a pointer of type Type...