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pip install scons If you are not to run scons from command line, check that Python scripts directory is added to PATH for your installation. If you want to play with API, import SCons from Python won't work, because SCons 2.5.x and below allows to install multiple versions side-by-side. This was...

Detailed instructions on getting teechart set up or installed.

I would describe %LET as being the most simple way to creating a Macro Variable in SAS. %LET variableName = variableValue; Now, anywhere you use &variableName, it will resolve to variableValue. NOTE:you may want to consider that variableValue all on its own might bring you syntax errors, ...

Using PROC SQL is a good way to get quick results from a table and throw them into variables. I usually find that when I want to get a count of records I just loaded to a table, I can get that count into a variable with a quick PROC SQL call. PROC SQL; SELECT COUNT(*) INTO:aVariable FROM ...

DATA _null_; CALL SYMPUT('testVariable','testValueText'); ;RUN; In the example above, %PUT &testVariable; will resolve to testvalueText. You may find the need to format your variable within the SYMPUT() call. DATA _null_; CALL SYMPUT('testDate',COMPRESS(PUT(today(...

Here follows a example of what can be done with nested StackViews, giving the user the impression of a continuous scrolling experience using complex user interface elements or alignments.

A frequent question about StackViews inside Scrollviews comes from ambiguous with/heigh alerts on interface builder. As this answer explained, it is necessary to: Add in the UIScrollView a UIView (the contentScrollView); In this contentScrollView, set top, bottom, left and right margins to 0 Se...

The big gotcha about scrolling is to determine the offset necessary to present (for instance) a Textfield inside a StackView with is inside the ScrollView. If you try to get the position of Textfield.frame.minY can be 0, because the minY frame is only considering the distance between the element an...

LINQ queries do not execute immediately. When you are building the query you are simply storing the query for future execution. Only when you actually request to iterate the query is the query executed (e.g. in a for loop, when calling ToList, Count, Max, Average, First, etc.) This is considered de...

If you want users to upload files to your server you need to do a couple of security checks before you actually move the uploaded file to your web directory. The uploaded data: This array contains user submitted data and is not information about the file itself. While usually this data is generate...

""" A [GFF parser script][1] in Python for [www.VigiLab.org][2] Description: - That performs buffered reading, and filtering (see: @filter) of .GFF input file (e.g. "[./toy.gff][3]") to keep only rows whose field (column) values are equal to "transcript...

For example, imagine a screen with 3 sections, laid out like this: The blue box might be given a margin of 4,4,0,0. The green box might be given a margin of 4,4,4,0. The purple box margin would be 4,4,4,4. Here's the XAML: (I'm using a grid to achieve the layout; but this design principle applies...

To generalise what we've demonstrated above: individual things contain a fixed margin of "half-the-whitespace", and the container they are held in should have a padding of "half-the-whitespace". You can apply these styles in your application resource dictionary, and then you won'...

Sometimes Android's logcat is running infinitely with errors coming from some process not own by you, draining battery or just making it hard to debug your code. A convenient way to fix the problem without restarting the device is to locate and kill the process causing the problem. From Logcat 03...

// This is a MiDI clk generator. This takes a #defined BPM and // makes the appropriate clk rate. The queue is used to let other messages // through, but allows a clock to go immediately to reduce clock jitter #define QUEUE_DEPTH 128 #define BPM 121 #define MIDI_SYSRT_CLK 0xF8 // clock...

Mailbox processors can be used to manage mutable state in a transparent and thread-safe way. Let's build a simple counter. // Increment or decrement by one. type CounterMessage = | Increment | Decrement let createProcessor initialState = MailboxProcessor<CounterMessage>.Sta...

You can asynchronously return a value for each processed message if you send an AsyncReplyChannel<'a> as part of the message. type MessageWithResponse = Message of InputData * AsyncReplyChannel<OutputData> Then the mailbox processor can use this channel when processing the message to...

You can use Scan or TryScan methods to look for specific messages in the queue and process them regardless of how many messages are before them. Both methods look at the messages in the queue in the order they arrived and will look for a specified message (up until optional timeout). In case there i...

Blocking Operation Example let loop = (i, max) => { while (i < max) i++ return i } // This operation will block Node.js // Because, it's CPU-bound // You should be careful about this kind of code loop(0, 1e+12) Non-Blocking IO Operation Example let i = 0 const step = max =...

#!/bin/bash deploy=false uglify=false while (( $# > 1 )); do case $1 in --deploy) deploy="$2";; --uglify) uglify="$2";; *) break; esac; shift 2 done $deploy && echo "will deploy... deploy = $deploy" $uglify && echo "will...