format

问题 I receive an instance of QImage with arbitrary QImage::Format . How can I create another instance of QImage with a particular QImage::Format of my choosing so that the actual image data is converted from the arbitrary format to my format? Example: QImage convertFormat(const QImage &inputImage, QImage::format outputFormat) { // What comes here? } //Usage QImage converted = convertFormat(mySourceImage, QImage::Format_Grayscale8); I am looking for a way to do this with existing code in Qt if

问题 Is there a way to format a real number for output such that both the width and decimal parts are left unspecified? This is possible with ifort by just doing the following: write (*, '(F)') num ...but I understand that that usage is a compiler-specific extension. Gfortran does accept the standard-compliant 0-width specifier, but I can't find anything in the standard nor in gfortran's documentation about how to leave the decimal part unspecified. The obvious guess is to just use 0 for that as

问题 I am very confused about what each part means in a svmLight data format. For example: (label/target, [(feature, value), ...], queryid) Does the label means the rank of the data and queryid is the id of the object? For example: for the following item: 2 qid:1 1:4.000000 2:2.772589 3:0.266667 4:0.258154 5:37.330565 6:11.431241 7:37.307017 8:1.213630 9:21.342267 10:10.842279 11:15.634736 12:2.749495 13:-39.467448 14:-37.791635 15:-38.002289 16:14.000000 17:5.634790 18:0.063927 19:0.063290 20:28

问题 I know I can set an alias for git log invocation with lots of parameters. For example, I can use this: git config --global alias.lg "log --graph --pretty=format:'%h -%d %s (%cr) <%an>'" to alias git log --graph --pretty=format:'%h -%d %s (%cr) <%an>' with much shorter git lg . Is it possible to set an alias for a --pretty=format: string alone? So that I can type git log --pretty=my_aliased_format 回答1: The git log documentation has this to say about the --pretty[=<format>] and --format=<format

问题 I have following types of values in a, b,c,d. a= 12345678 b= 12345678.098 c=12345678.1 d=12345678.11 I need to format like, a = 12,345,678.000 b= 12,345,678.098 c=12,345,678.100 d=12,345,678.110 I already tried tolocaleString() and toFixed(3) method. But I'm not able to works together of both method. need your suggestion on this. 回答1: var num = 123456789; console.log(num.toLocaleString(undefined, {minimumFractionDigits: 3, maximumFractionDigits: 3})); Ref: https://developer.mozilla.org/en-US

问题 The essential of question is declared at the title. More details: I have the Time series chart, and vertical axis should has labels in currency format like this $100, 000, 000 $50, 000 ... Now I have the same labels, but without dollar sign and range delimiter. For horizontal axis I used this approach: DateAxis axis = (DateAxis) plot.getDomainAxis(); axis.setDateFormatOverride(new SimpleDateFormat("yyyy")); And it works. When I try to do similar ValueAxis valueAxis = (ValueAxis) plot

问题 I need to format the date in an email template. The date gets included in the plain .html email as follows: Dispatch Date: {{var order.getShippingDate()}} Is there any way I can format this date? I've tried just using the standard PHP date function to format it to no avail. 回答1: strtotime any help? It can parse a data back to a unix timestamp, which is what date() expects as an input. edit after comment: You can try creating a custom version of app/code/core/Mage/Sales/Model/Order.php under

问题 I have publish up date and publish down date in my DB. Currently they are both same dates. How do I change it (during mysql insert) so publish down date is 30 days past publish up date. I am using $pubDate Thanks 回答1: You can use DATE_ADD(): DATE_ADD(my_date, INTERVAL 30 DAY) 回答2: in php, before inserting you can use strtotime(): if the publishDown date is a timestamp: $publishDown = strtotime("+30 days",$publishDown); otherwise you may have to use mktime to get it in the right format 来源：

问题 Is there a way to import .yxdb (Alteryx database files) into Pandas/Python, without using Alteryx as a go-between? 回答1: The short answer is no, not at this time. Longer answer: the raw C++ for .yxdb support is available on github, as it was open sourced in order to adhere to R licensing when Alteryx hooked into R. See this link where Ned Harding explains it all in his blog. So basically, everything is there for someone to build Python support by utilizing the open source C++ ... but nobody

问题 I looked in the eclipse Java formatter (Java / Code Style / Formatter) but could not find a way to not have a new line after case . Instead of switch (a) { case 0: Other.doFoo(); break; case 1: Other.doBaz(); } I want switch (a) { case 0: Other.doFoo(); break; case 1: Other.doBaz(); } Is there a way to do it and if so what is it? 回答1: I found no way to resolve this. There is no way of refractoring existing code as you expected. But you can avoid writing such switch statement now onwards by