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Getting current device language in iOS?
...rica and I set my language to Japanese, my region will still be English (United States). In order to retrieve the currently selected language, you can do:
NSString * language = [[NSLocale preferredLanguages] firstObject];
This will return a two letter code for the currently selected language. "en...
Renaming columns in pandas
I have a DataFrame using pandas and column labels that I need to edit to replace the original column labels.
27 Answers
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Should I use the datetime or timestamp data type in MySQL?
...ecide between using a UNIX timestamp or a native MySQL datetime field, go with the native format. You can do calculations within MySQL that way
("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)") and it is simple to change the format of the value to a UNIX timestamp ("SELECT UNIX_TIMESTAMP(my_datetime...
SQLAlchemy: how to filter date field?
...can also use datetime.date(1985, 1, 17) - may be easier to get at or work with in some environments.
– tossbyte
Dec 22 '15 at 22:27
5
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What is the performance cost of having a virtual method in a C++ class?
Having at least one virtual method in a C++ class (or any of its parent classes) means that the class will have a virtual table, and every instance will have a virtual pointer.
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Using the Android Application class to persist data
...om what I can tell, any orientation change in the application (in the activity, to be more precise) causes a complete destruction and recreation of the activity. Based on my findings, the Application class does not have the same life-cycle (i.e. it is, for all intents and purposes, always instantia...
How to Display blob (.pdf) in an AngularJS app
...getting as a blob from a $http.post response. The pdf must be displayed within the app using <embed src> for example.
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Checkbox for nullable boolean
...
I got it to work with
@Html.EditorFor(model => model.Foo)
and then making a Boolean.cshtml in my EditorTemplates folder and sticking
@model bool?
@Html.CheckBox("", Model.GetValueOrDefault())
inside.
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How to create a new branch from a tag?
...
Wow, that was easier than I thought:
git checkout -b newbranch v1.0
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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
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fchown
lstat
setgid
symlink
aio_error
fcntl
mkdir
setpgid
sysconf
aio_return
fdatasync
mkfifo
setsid
tcdrain
aio_suspend
fork
open
setsockop...