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Can't install Ruby under Lion with RVM – GCC issues
...rt for clang, so if you are installing such a version you should not need GCC. If you’re installing an older version of Ruby, read on.
To compile Ruby with GCC, you need a non-LLVM version of GCC, which is no longer included with XCode 4.2. Install it yourself (or downgrade to XCode 4.1 temporari...
“CASE” statement within “WHERE” clause in SQL Server 2008
...tered LIKE '%TestPerson' THEN 1 ELSE 0 END
END = 1
AND cc.ccnum = CASE LEN('TestFFNum')
WHEN 0 THEN cc.ccnum
ELSE 'TestFFNum'
END
AND CASE LEN('2011-01-09 11:56:29.327')
WHE...
Remove by _id in MongoDB console
...close. This will work:
db.test_users.deleteOne( {"_id": ObjectId("4d512b45cc9374271b02ec4f")});
i.e. you don't need a new for the ObjectId.
Also, note that in some drivers/tools, remove() is now deprecated and deleteOne or deleteMany should be used instead.
...
How to parse JSON in Python?
...e example that may help you:
json_string = """
{
"pk": 1,
"fa": "cc.ee",
"fb": {
"fc": "",
"fd_id": "12345"
}
}"""
import json
data = json.loads(json_string)
if data["fa"] == "cc.ee":
data["fb"]["new_key"] = "cc.ee was present!"
print json.dumps(data)
The ...
诺奖得主谈“双创”：让鼓励创业成为一种文化 - 资讯 - 清泛网 - 专注C/C++...
...全球金融博物馆博览会上，诺贝尔经济学奖得主哥伦比亚大学教授菲尔普斯(Edmund Phelps)先生表达了他对中国经济变革的看法，他认为：“大众创业，万众创新”是中国经济发展的改革方向，让多元化的金融机构参与进来，才是中...
configure: error: C compiler cannot create executables
...
You have an old set of developer tools. gcc is reporting its version as 4.0.1. This may be left over from migrating from an older version of the OS. If you've installed Xcode 4.3.x, you need to launch it, go into its preferences, select the Downloads tab, and click ...
Linux c++ error: undefined reference to 'dlopen'
...
@Masci is correct, but in case you're using C (and the gcc compiler) take in account that this doesn't work:
gcc -ldl dlopentest.c
But this does:
gcc dlopentest.c -ldl
Took me a bit to figure out...
...
Undoing a 'git push'
...n last_known_good_commit:branch_name
or in your case
git push -f origin cc4b63bebb6:alpha-0.3.0
You may have receive.denyNonFastForwards set on the remote repository. If this is the case, then you will get an error which includes the phrase [remote rejected].
In this scenario, you will have to...
XXX.cc:100: error: ‘::strerror’ has not been declared - C/C++ - 清泛网 - 专注C/C++及内核技术
XXX.cc:100: error: ‘::strerror’ has not been declared#include <string.h>解决。#include <string.h> 解决。strerror
ThreadXxx.cc:100: error: ‘::pthread_kill’ has not been declared - C/...
ThreadXxx.cc:100: error: ‘::pthread_kill’ has not been declared#include <pthread.h>#include <signal.h>除了pthread.h外，还要引入signal.h头文件才行，解决。#include <pthread.h>
#include <signal.h>
除了pthread.h外，还要引入signal.h头文件才行，解决。pthread_kill