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mongodb, replicates and error: { “$err” : “not master and slaveOk=f...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435出现这个错误的原因是在从库上执行命令导致，默认情况下只有主库可以执行命令。当然可以通过设置使得从库也能执行命令，具体参见：http: s 出现...
How can I generate random alphanumeric strings?
How can I generate a random 8 character alphanumeric string in C#?
33 Answers
33
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Python argparse: How to insert newline in the help text?
...although it might not matter, since 2.7 is meant to be the last 2.x python and you'll be expected to refactor lots of things for 3.x anyway. I'm actually running 2.6 with argparse installed via easy_install so that documentation may itself be out of date.
– intuited
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Why is require_once so bad to use?
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require_once and include_once both require that the system keeps a log of what's already been included/required. Every *_once call means checking that log. So there's definitely some extra work being done there but enough to detriment th...
change type of input field with jQuery
...with id="password" ) that is of type password to a normal text field, and then fill in the text “Password”.
29 Ans...
Multi flavor app based on multi flavor library in Android Gradle
...ole project would be like this:
Library build.gradle:
apply plugin: 'com.android.library'
android {
....
publishNonDefault true
productFlavors {
market1 {}
market2 {}
}
}
project build.gradle:
apply plugin: 'com.android.application'
android {
....
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stringstream, string, and char* conversion confusion
...does the string returned from stringstream.str().c_str() live in memory, and why can't it be assigned to a const char* ?
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Git commit in terminal opens VIM, but can't get back to terminal
Trying to learn GitHub at the moment and doing this Git essentials tutorial over at nettuts. I'm on the lesson about making commits.
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Why do I have to access template base class members through the this pointer?
... deferred until the parameter is known. It's called two-phase compilation, and MSVC doesn't do it but it's required by the standard and implemented by the other major compilers. If you like, the compiler must compile the template as soon as it sees it (to some kind of internal parse tree representat...
do..end vs curly braces for blocks in Ruby
...worker who is actively trying to convince me that I should not use do..end and instead use curly braces for defining multiline blocks in Ruby.
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